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CN116904114B - A high temperature and high humidity resistant siloxane oligomer interface bonding agent composition and its preparation method and application - Google Patents

A high temperature and high humidity resistant siloxane oligomer interface bonding agent composition and its preparation method and application Download PDF

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CN116904114B
CN116904114B CN202310823062.1A CN202310823062A CN116904114B CN 116904114 B CN116904114 B CN 116904114B CN 202310823062 A CN202310823062 A CN 202310823062A CN 116904114 B CN116904114 B CN 116904114B
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humidity
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siloxane oligomer
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CN116904114A (en
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张群朝
杨宇霆
张淼澜
喻亮
尤俊
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Hubei University
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Abstract

The invention discloses a high-temperature high-humidity siloxane oligomer interface bonding agent composition and a preparation method thereof, wherein the preparation method comprises the following steps of A, adding a siloxane wetting dispersing agent into low-molecular-weight polyether, heating and stirring, adding amino or sulfhydryl/silicate ester copolymerization siloxane oligomer, and then adding inorganic nano particles with high specific surface area for uniform dispersion to obtain a dispersion system; and B, dropwise adding hyperbranched polysiloxane units into the dispersion system in the step A under the stirring condition, stirring and dispersing uniformly to obtain a hyperbranched polysiloxane unit composite dispersion system, and C, adding alpha-type active alkyl copolymerization type siloxane oligomer into the dispersion system in the step B, and dispersing uniformly to obtain the high-temperature high-humidity siloxane oligomer interface bonding agent composition. The composition prepared by the invention can improve the bonding effect of the polyether agent in high stability, long service life, high body damage resistance and high water-proof foam under high-temperature and high-humidity environment, and has low cost and easy industrial production and popularization and application.

Description

High-temperature-resistant high-humidity-resistant siloxane oligomer interface bonding agent composition, and preparation method and application thereof
Technical Field
The invention relates to the field of interface bonding regulation and control of moisture-cured siloxane modified polyether sealant materials, in particular to a high-temperature and high-humidity resistant siloxane oligomer interface bonding agent composition for siloxane modified polyether sealant, metal, glass, concrete and plastic under high-temperature and high-humidity extreme environments and a preparation method thereof.
Background
The siloxane modified polyether sealant material is a high molecular material containing polyether units and siloxane crosslinking units in a molecular structure, has excellent ageing resistance, pollution resistance and recoating property due to the structural specificity, and is often bonded with an organic interface and an inorganic interface in a physical hydrogen bond and chemical point location reaction mode. However, under the action of high temperature and high humidity environment, the bonding behavior of the silicone modified polyether sealant and interfaces of metal, glass, concrete, plastic and the like can be rapidly destroyed, so that the silicone modified polyether sealant and the interfaces of the metal, glass, concrete, plastic and the like can be firmly bonded by the treatment of an interface bonding agent.
Due to the fact that the polarity of the polyether unit is high, stable physical hydrogen bonds are easily formed between the siloxane modified polyether sealant and water molecules in a wet and hot environment, and therefore the bonding property of the siloxane modified polyether sealant and interfaces of metal, glass, concrete, plastics and the like is damaged. Therefore, in order to realize good adhesion of the interface between the siloxane modified polyether sealant and metal, glass, concrete, plastic and the like under the extreme environment of high temperature and high humidity to achieve the body destruction of the interface adhesion of the siloxane modified polyether sealant and the metal, glass, concrete, plastic and the like, three conditions must be met, namely (1) designing polar bonding groups to form firm surface bonding with the metal, glass, concrete, plastic and the like, (2) enabling the interface regulator to be highly infiltrated with the interface of the metal, glass, concrete, plastic and the like to form firm physical acting force, and (3) enabling the interface regulator to form an in-situ deposited micro-nano convex-concave transition layer on the surface of the metal, glass, concrete, plastic and the like, so as to enable the siloxane modified polyether adhesive to form physical and chemical double chelation with the in-situ deposited micro-nano convex-concave transition layer. The traditional interface regulator is based on the first coating process to realize the chemical bonding between part of the interface regulator and the interface, and then further coating the second coating process to realize the interface treatment, but the method still has difficulty in meeting the bonding between the siloxane modified polyether sealant and the interfaces of metal, glass, concrete, plastic and the like under high temperature and high humidity, and cannot realize the body destruction of stable bonding.
The silane coupling agent is a novel functional organic intermediate bridging polymer and inorganic material, and achieves organic/inorganic chemical or physical bonding by means of the hydrolysis/condensation of alkoxy of the silane coupling agent by means of environmental water vapor, hydroxyl in the polymer or hydroxyl of an organic/inorganic interface. However, the traditional silane coupling agent is mainly characterized by containing trialkoxy or dialkoxy, and when the silane coupling agent is bonded with an organic/inorganic interface, a large amount of hydroxyl groups are needed to be enriched on the surface of the silane coupling agent to realize the chemical bonding of a network structure between the silane coupling agent and the organic/inorganic interface, and when the silane coupling agent is used in a high-temperature and high-humidity environment, the interface between the siloxane modified polyether sealing agent and metal, glass, concrete, plastic and the like is difficult to form the bonding of a large amount of network structures, and the interface bonding or infiltration between the siloxane modified polyether sealing agent and metal, glass, concrete, plastic and the like is more difficult to realize.
Chinese patent CN106893484B discloses a concrete interface regulator for siloxane modified polyether glue, which uses polyester, alkyd resin and trialkoxysilane containing mono-amino or diamino, adopts solvent to clean the substrate before use, coats the surface of glass to form a transition layer to form a primary activation layer, then further coats a second primer to realize in-situ adhesion with the siloxane modified polyether, but adopts polyether structural monomer to react with amino hydrogen to prepare aminosiloxane with polyether structure. The treatment method is difficult to realize interface bonding or infiltration between the polymer and metal, glass, concrete, plastic and the like in a high-temperature high-humidity environment, and cannot meet the treatment of special interfaces.
Chinese patent CN103339163a discloses a tackifying composition which is mainly based on isocyanate trimer reacting with silicone to form highly crosslinked silicone compounds, which is mainly suitable for adhesion of adhesives and sealants on glass and ceramics. The method has the defects that on one hand, the reaction with polyhydroxy surface bonding is realized by utilizing the high crosslinking degree of siloxane, but the brittleness caused by too high functional groups can occur, the reproducibility of interface bonding is poor, meanwhile, the interface is required to be cleaned and activated, and on the other hand, urethane rings in a molecular structure are favorable for being hydrophilic to polyurethane glue to generate good physical entanglement. The method is also difficult to realize interface bonding or infiltration between polyether glue and metal, glass, concrete, plastic and the like in a high-temperature and high-humidity environment, and cannot meet the treatment of special surfaces.
Chinese patent CN101573305A discloses a low temperature adhesion primer composition which is a composition that uses mainly mercaptosilane, silicone modified isocyanate trimer, aminosilane and epoxy addition oligosiloxane. Compared with the Chinese patent CN103339163A, the method greatly improves the bonding effect between the primer and the interface, improves the coordination effect between the interface regulator and the interface on one hand, and improves the hydrophilic effect between the interface regulator and the polyurethane on the other hand, and can realize that an activating agent is not needed and only one primer is needed through the improvement on the two aspects. However, the interface regulator is difficult to form a micro-nano rugged chelating layer on the interface, so that the water resistance is caused, more than 90% of the body can be temporarily damaged, but the water bubble can cause cracking phenomenon for 1-2 days, and especially the interface bonding or infiltration between the polyether glue and metal, glass, concrete, plastic and the like can not be realized under the high-temperature and high-humidity environment.
In view of the above, development and design of an interface regulator product which can realize body destruction by one-time coating of a siloxane modified polyether sealant under the severe conditions of high temperature and high humidity are urgently needed at present, and the interface regulator product has important research significance and application value so as to overcome the use defect under the severe conditions.
Disclosure of Invention
The invention aims to overcome the defect or defect that a siloxane modified polyether sealant cannot meet the requirement of body damage due to one-time coating under the severe conditions of high temperature and high humidity in the prior art, and provides a high-temperature and high-humidity resistant siloxane oligomer interface bonding agent composition, a preparation method and application thereof.
The invention also aims to provide a preparation method and application of the high-temperature and high-humidity resistant siloxane oligomer interface bonding agent composition.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
the high-temperature and high-humidity resistant siloxane oligomer interface bonding agent composition comprises the following components in parts by weight:
The prior patent usually adopts aminosilane, silane modified isocyanate trimer, thiosilane and amino/epoxy adduct siloxane with more than three functional groups as interface regulator, and the interface regulator is well suitable for glass substrate with Gao Qiangji active surface, metal substrate with high hydroxyl active surface or silicon dioxide-based surface with high hydroxyl active surface, so that the interface regulator is often used in a mode that the high hydroxyl active surface is activated first and then primed, and in addition, the composition of cyano/mercapto/polyether copolymer siloxane oligomer, maleate alkoxy silane, bridge ureido/urethane alkoxy silane and acryloxyalkyl alkoxy silane can solve the problem that the regulation of a low hydroxyl interface realizes the body destruction, but the silicone is difficult to realize long-life and long-acting interface adhesion on metal, glass, concrete and plastic substrates under the condition of high-temperature high-humidity cyclic destruction.
The invention is based on the structural characteristics of moisture curing siloxane modified polyether and the interfacial properties of metal, glass, concrete and plastic, and selects the composite silane/siloxane in-situ nano reinforced molecular-grade high-temperature and high-humidity resistant siloxane oligomer interfacial bonding agent composition with in-situ deposited micro-nano convex-concave function, high-degree wetting function and physical and chemical bonding function. The action principle is as follows:
(1) because the interface bonding agent composition contains hyperbranched polysiloxane units and alpha-type active alkyl copolymerization type siloxane oligomer components, the cooperation of the two components can realize the firm interface chemical bonding effect and the catalytic-free rapid crosslinking function between the interface bonding agent and metals, glass, concrete and plastics; the interface bonding agent composition also contains amino or sulfhydryl/silicate ester copolymer siloxane oligomer, low molecular weight polyether and siloxane wetting dispersant components, which are matched for use, on one hand, can realize double interface hydrophilic effect with metal, glass, concrete, plastic and moisture curing siloxane modified polyether glue, and can also realize chemical and physical bonding effect with polyether glue, and (4) the interface bonding agent composition also contains amino or sulfhydryl/silicate ester copolymer siloxane oligomer, high specific inorganic nano particle and siloxane wetting dispersant components, which can realize nano-disperse enhancement in the interface regulator, thereby realizing compact superhydrophobic micro-convex-concave rough surface enhancement siloxane-lotus leaf rough surface formed on the interface, further realizing synergistic crosslinking with superhydrophobic modified polyether glue, the siloxane wetting dispersant component can lead amino or sulfhydryl/silicate copolymerized siloxane oligomer, high specific surface area inorganic nano particles and low molecular weight polyether to be uniformly dispersed in an interface regulator to form super-hydrophobic nano enhancement with high inorganic content, and can also promote high infiltration between siloxane polyether glue and metal, glass, concrete and plastic.
The high-temperature and high-humidity resistant siloxane oligomer interface bonding agent composition provided by the invention is used as an interface transition layer of a siloxane modified polyether adhesive and metal, glass, concrete and plastic surfaces, has a micro-nano convex-concave function, a high-infiltration function, a physical and chemical bonding function, excellent interface chemical bonding, in-situ bonding enhancement and long-term and high-efficiency damp-heat resistant body destructiveness, and can promote the long-acting, high-stability, long-service life, high body destructiveness resistance and high water-bubble resistance bonding effect of the siloxane modified polyether adhesive under the high-temperature and high-humidity conditions of the metal, glass, concrete and plastic, and has low cost and easy industrial production and popularization and application.
It will be appreciated that the high temperature and high humidity resistant silicone oligomer interfacial bonding agent compositions of the present invention achieve the same interfacial bonding effect when used with silicone modified polyethers and conventional inorganic interfaces.
Preferably, the high-temperature and high-humidity resistant siloxane oligomer interface bonding agent composition comprises the following components in parts by weight:
preferably, the amino or mercapto/silicate copolysiloxane oligomer has a structure as shown in formula I:
Wherein R 1 and R are respectively alkyl of C 1~C4, R 2 is alkyl or aryl of C 1~C4, X is primary amino, secondary amino, ethylenediamine or mercapto, a and b are respectively positive integers of 0-10 and 2-a+b are less than or equal to 20.
Specifically, in the present invention, the alkyl group of C 1~C4 may be methyl, ethyl, propyl or butyl, and the aryl group may be phenyl.
More preferably, R 1 is methyl.
More preferably, R is methyl or ethyl.
More preferably, R 2 is propyl.
More preferably, X is CH 3CH2CH2CH2 -NH-, or NH 2-CH2CH2 NH-.
More preferably, a is 3, b is 7, and a+b=10, and the amino or mercapto/silicate copolysiloxane oligomer has a number average molecular weight Mn of 600 to 2000.
Preferably, the low molecular weight polyether is one of a linear ethylene oxide-propylene oxide copolymer, a linear ethylene oxide, a linear propylene oxide, or a linear tetrahydrofuran ether homopolymer, wherein the number average molecular weight of the low molecular weight polyether ranges from 200 to 800.
More preferably, the low molecular weight polyether is a homopolymer of linear tetrahydrofuran ether and has a number average molecular weight in the range of 200 to 800.
Preferably, the hyperbranched polysiloxane unit has the formula shown in formula II:
In the formula II, R 3 is saturated straight-chain or branched-chain alkyl with the carbon number of C 1~C4, and p represents a positive integer of 20-80. More preferably, R 3 is methyl and p is 30.
Preferably, the alpha-type reactive alkyl-copolysiloxane oligomer has a formula as shown in formula III:
In the formula III, Y is NH, NH 2CH2CH2 NH or SH group, R 5 is alkyl of C 1~C4, R 4 is alkyl of C 1~C12, a and b are positive integers of 0-10 respectively, and a+b is 2-20.
More preferably, X is NH 2CH2CH2NH,R4 is octyl of C 8, R 5 is ethyl, a is 3, b is 7, and a+b=10.
Preferably, the high specific surface area inorganic nano particles are one or a mixture of more than two of nano silicon dioxide, nano titanium dioxide and nano calcium carbonate, wherein the specific surface area of the high specific surface area inorganic nano particles is 300-1200 nanometers.
More preferably, the high specific surface area inorganic nanoparticle is a nanosilica aerogel and the specific surface area is 1200.
Preferably, the siloxane wetting dispersant is one or a mixture of two of a trimethylsilyl propyl oxirane nonionic surfactant or a cross-linked epoxy glycidyl ether silane nonionic surfactant.
More preferably, the siloxane wetting dispersant is a cyclopropoxy glycidyl ether propyl trimethoxy silane grafted glycidylyl nonionic polyether, and the molecular weight of the cyclopropoxy glycidyl ether propyl trimethoxy silane grafted glycidylyl nonionic polyether is 400. The structural formula is shown as formula IV:
The invention also provides a preparation method of the high-temperature high-humidity siloxane oligomer interface bonding agent composition, which comprises the following steps:
Adding a siloxane wetting dispersant into low molecular weight polyether, heating and stirring at 70-100 ℃, adding amino or mercapto/silicate copolymer siloxane oligomer, and then adding high specific surface area inorganic nano particles to uniformly disperse to obtain an in-situ nano composite molecular-grade size dispersion system;
B, dropwise adding the hyperbranched polysiloxane unit into the dispersion system in the step A under the stirring condition at the temperature of 30-50 ℃, and uniformly stirring and dispersing to obtain a hyperbranched polysiloxane unit composite dispersion system;
And C, adding the alpha-type active alkyl copolymerization type siloxane oligomer into the dispersion system in the step B, and uniformly dispersing to obtain the high-temperature high-humidity siloxane oligomer interface bonding agent composition.
The preparation method has the advantages that firstly, the molecular-level compatibility among low-molecular-weight polyether, amino or sulfhydryl/silicate ester copolymerized siloxane oligomer and high specific surface area inorganic nano particles in the reaction process can be realized by adopting a crosslinking siloxane-based wetting dispersant method, and secondly, hyperbranched polysiloxane units and alpha-type active alkyl copolymerized siloxane oligomer are designed to endow the siloxane modified polyether with compact network bonding crosslinking and rapid condensation bonding with metal, glass, concrete and plastic, so that the defect that the traditional modified siloxane interface bonding agent needs to catalyze the crosslinking bonding by a catalyst is overcome.
The invention also discloses application of the high-temperature high-humidity siloxane oligomer interface bonding agent composition, which is used for interface bonding regulation and control application of the moisture-curing siloxane modified polyether sealant and interface bonding of metal, glass, concrete and plastic in an extremely high-temperature high-humidity environment.
The invention has the beneficial effects that the molecular structure is designed to carry out the balance regulation and control of molecular polarity and non-polarity, so that the molecular structure of the prepared high-temperature high-humidity siloxane oligomer interface bonding agent contains polar group amino or ether groups, the amino or ether groups have excellent polar effect, the interface bonding has excellent physical and chemical effects and high-surface infiltration function, and the molecular structure contains nano-size inorganic ions, long-chain alkyl and hyperbranched crosslinking siloxane units, so that the siloxane polyether forms compact network bonding crosslinking and rapid condensation bonding with metals, glass, concrete and plastics, and simultaneously has micro-nano convex-concave functions, high infiltration functions, physical and chemical bonding functions, excellent interface chemical bonding, in-situ bonding enhancement and long-term high-efficiency damp-heat body destructiveness, and the long-acting, high-stability, high-life, high-body destructiveness resistance and high-water-bubble resistance bonding effect of the siloxane modified polyether adhesive under the high temperature and high humidity conditions of metals, glass, concrete and plastics.
In a word, the invention provides a composite silane/siloxane in-situ nano reinforced molecular-grade high-temperature and high-humidity resistant siloxane oligomer interface bonding agent composition which has in-situ deposited micro-nano convex-concave function, high-infiltration function and physical and chemical bonding function based on the structural characteristics of siloxane modified polyether sealant and the interface properties of metal, glass, concrete and plastic, and the prepared siloxane oligomer interface bonding agent composition can improve the bonding effect of the siloxane modified polyether sealant in high-temperature and high-humidity environment, has high stability, long service life, high body damage resistance and high water bubble resistance, and is low in cost and easy for industrial production and popularization and application. The preparation method of the high-temperature high-humidity siloxane oligomer interface bonding agent is simple, low in cost, environment-friendly and convenient for industrialization.
Detailed Description
The invention is further illustrated below with reference to examples. These examples are only for illustrating the present invention and are not intended to limit the scope of the present invention. The experimental methods in the examples below, in which specific conditions are not specified, are generally conducted under the conditions conventional in the art or according to the conditions recommended by the manufacturer, and the raw materials, reagents, etc. used, unless otherwise specified, are commercially available from conventional markets and the like. Any insubstantial changes and substitutions made by those skilled in the art in light of the above teachings are intended to be within the scope of the invention as claimed.
Example 1
This example provides a high temperature, high humidity silicone oligomer interfacial bonding agent composition, which was prepared as follows.
Adding 3 parts of cyclopropoxy glycidyl ether propyl trimethoxy silane grafted glycidyl nonionic polyether wetting dispersant into a reaction bottle, adding 15 parts of linear polyethylene oxide (Mn=400), heating and stirring at 70-100 ℃, sequentially adding 45 parts of aminopropyl methoxy silane/ethyl silicate copolymerized siloxane oligomer (Mn=1500), adding 5 parts of silica particles with specific surface area of 300 nanometers, uniformly dispersing to obtain an in-situ nano composite molecular size dispersion system, continuously dispersing 20 parts of methoxy hyperbranched polysiloxane units (p=30) at 30-50 ℃ to obtain a hyperbranched polysiloxane unit composite dispersion system, and further dispersing 12 parts of alpha-aminomethyltriethoxysilane/octyl triethoxysilane copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7 and the molecular weight is 1600) to obtain the high-temperature high-humidity siloxane oligomer interface bonding agent composition. The weight portions of the raw materials are calculated in the reaction.
Example 2
This example provides a high temperature, high humidity silicone oligomer interfacial bonding agent composition, which was prepared as follows.
Adding 3 parts of cyclopropoxy glycidyl ether propyl trimethoxy silane grafted glycidyl nonionic polyether wetting dispersant into a reaction bottle, adding 15 parts of linear polyethylene oxide (Mn=400), heating and stirring at 70-100 ℃, sequentially adding 45 parts of mercaptopropyl methoxy silane/ethyl silicate copolymerized siloxane oligomer (Mn=1400), adding 5 parts of silica particles with specific surface area of 300 nanometers, uniformly dispersing to obtain an in-situ nano composite molecular size dispersion system, continuously dispersing 20 parts of methoxy hyperbranched polysiloxane units (p=30) at 30-50 ℃ to obtain a hyperbranched polysiloxane unit composite dispersion system, and further dispersing 12 parts of alpha-aminomethyltriethoxysilane/octyl triethoxysilane copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7 and the molecular weight is 1600) to obtain the high-temperature high-humidity siloxane oligomer interface bonding agent composition. The weight portions of the raw materials are calculated in the reaction.
Example 3
This example provides a high temperature, high humidity silicone oligomer interfacial bonding agent composition, which was prepared as follows.
Adding 3 parts of cyclopropoxy glycidyl ether propyl trimethoxy silane grafted epoxy propyl nonionic polyether wetting dispersant into a reaction bottle, adding 15 parts of linear polyethylene oxide (Mn=400), heating and stirring at 70-100 ℃, sequentially adding 45 parts of butyl aminopropyl trimethoxy silane/ethyl silicate copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7, mn=1500), adding 5 parts of specific surface area 300 nano silicon dioxide particles, uniformly dispersing to obtain an in-situ nano composite molecular size dispersion system, continuously dispersing 20 parts of methoxy hyperbranched polysiloxane units (p=30), uniformly dispersing at 30-50 ℃ to obtain a hyperbranched polysiloxane unit composite dispersion system, and further dispersing 12 parts of alpha-aminomethyltriethoxysilane/octyl triethoxysilane copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7 and molecular weight is 1600) to obtain the high-temperature high-humidity siloxane oligomer interface bonding agent composition. The weight portions of the raw materials are calculated in the reaction.
Example 4
This example provides a high temperature, high humidity silicone oligomer interfacial bonding agent composition, which was prepared as follows.
Adding 3 parts of cyclopropoxy glycidyl ether propyl trimethoxy silane grafted epoxy propyl nonionic polyether wetting dispersant into a reaction bottle, adding 15 parts of linear polyethylene oxide (Mn=400), heating and stirring at 70-100 ℃, sequentially adding 45 parts of ethylenediamine propyl methoxy silane/ethyl silicate copolymerized siloxane oligomer (Mn=1400), adding 5 parts of silica particles with specific surface area of 300 nanometers, uniformly dispersing to obtain an in-situ nano composite molecular size dispersion system, continuously dispersing 20 parts of methoxy hyperbranched polysiloxane units (p=30) at 30-50 ℃ to obtain a hyperbranched polysiloxane unit composite dispersion system, and further dispersing 12 parts of alpha-aminomethyltriethoxy silane/octyl triethoxy silane copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7 and the molecular weight is 1600) to obtain the high-temperature high-humidity siloxane oligomer interface bonding agent composition. The weight portions of the raw materials are calculated in the reaction.
Example 5
This example provides a high temperature, high humidity silicone oligomer interfacial bonding agent composition, which was prepared as follows.
Adding 3 parts of cyclopropoxy glycidyl ether propyl trimethoxy silane grafted glycidyl nonionic polyether wetting dispersant into a reaction bottle, adding 15 parts of linear polypropylene oxide (Mn=400), heating and stirring at 70-100 ℃, sequentially adding 45 parts of butyl aminopropyl trimethoxy silane/ethyl silicate copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7, mn=1500), adding 5 parts of specific surface area 300 nano silica particles, uniformly dispersing to obtain an in-situ nano composite molecular size dispersion system, continuously dispersing 20 parts of methoxy hyperbranched polysiloxane units (p=30), uniformly dispersing at 30-50 ℃ to obtain a hyperbranched polysiloxane unit composite dispersion system, and further dispersing 12 parts of alpha-aminomethyltriethoxysilane/octyl triethoxysilane copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7 and the molecular weight is 1600) to obtain the high-temperature high-humidity siloxane oligomer interface bonding agent composition. The weight portions of the raw materials are calculated in the reaction.
Example 6
This example provides a high temperature, high humidity silicone oligomer interfacial bonding agent composition, which was prepared as follows.
Adding 3 parts of cyclopropoxy glycidyl ether propyl trimethoxy silane grafted epoxy propyl nonionic polyether wetting dispersant into a reaction bottle, adding 15 parts of linear polytetrahydrofuran (Mn=400), heating and stirring at 70-100 ℃, sequentially adding 45 parts of butyl aminopropyl trimethoxy silane/ethyl silicate copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7, mn=1500), adding 5 parts of specific surface area 300 nano silica particles, uniformly dispersing to obtain an in-situ nano composite molecular size dispersion system, continuously dispersing 20 parts of methoxy hyperbranched polysiloxane units (p=30), uniformly dispersing at 30-50 ℃ to obtain a hyperbranched polysiloxane unit composite dispersion system, and further dispersing 12 parts of alpha-aminomethyltriethoxysilane/octyl triethoxysilane copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7 and the molecular weight is 1600) to obtain the high-temperature high-humidity siloxane oligomer interface bonding agent composition. The weight portions of the raw materials are calculated in the reaction.
Example 7
This example provides a high temperature, high humidity silicone oligomer interfacial bonding agent composition, which was prepared as follows.
Adding 3 parts of cyclopropoxy glycidyl ether propyl trimethoxy silane grafted epoxy propyl nonionic polyether wetting dispersant into a reaction bottle, adding 15 parts of linear polyethylene oxide/propane copolymer (Mn=400), heating and stirring at 70-100 ℃, sequentially adding 45 parts of butyl aminopropyl trimethoxy silane/ethyl silicate copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7, mn=1500), adding 5 parts of specific surface area 300 nano silica particles, dispersing uniformly to obtain an in-situ nano composite molecular size dispersion system, continuously dispersing 20 parts of methoxy hyperbranched polysiloxane units (p=30), dispersing uniformly at 30-50 ℃ to obtain a hyperbranched polysiloxane unit composite dispersion system, and further adding 12 parts of alpha-aminomethyltriethoxysilane/octyl triethoxysilane copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7 and molecular weight is 1600) dispersion system to obtain the high-temperature high-humidity siloxane oligomer interface bonding agent composition. The weight portions of the raw materials are calculated in the reaction.
Example 8
This example provides a high temperature, high humidity silicone oligomer interfacial bonding agent composition, which was prepared as follows.
Adding 3 parts of cyclopropoxy glycidyl ether propyl trimethoxy silane grafted epoxy propyl nonionic polyether wetting dispersant into a reaction bottle, adding 15 parts of linear polytetrahydrofuran (Mn=400), heating and stirring at 70-100 ℃, sequentially adding 45 parts of butyl aminopropyl trimethoxy silane/methyl silicate copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7, mn=1500), adding 5 parts of specific surface area 300 nano silicon dioxide particles, uniformly dispersing to obtain an in-situ nano composite molecular size dispersion system, continuously dispersing 20 parts of methoxy hyperbranched polysiloxane units (p=30), uniformly dispersing at 30-50 ℃ to obtain a hyperbranched polysiloxane unit composite dispersion system, and further dispersing 12 parts of alpha-aminomethyltriethoxysilane/octyl triethoxysilane copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7 and the molecular weight is 1600) to obtain the high-temperature high-humidity siloxane oligomer interface bonding composition. The weight portions of the raw materials are calculated in the reaction.
Example 9
This example provides a high temperature, high humidity silicone oligomer interfacial bonding agent composition, which was prepared as follows.
Adding 3 parts of cyclopropoxy glycidyl ether propyl trimethoxy silane grafted epoxy propyl nonionic polyether wetting dispersant into a reaction bottle, adding 15 parts of linear polytetrahydrofuran (Mn=400), heating and stirring at 70-100 ℃, sequentially adding 45 parts of butyl aminopropyl trimethoxy silane/ethyl silicate copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7, mn=1500), adding 5 parts of specific surface area 1200 silica aerogel, uniformly dispersing to obtain an in-situ nano-composite molecular-size dispersion system, continuously dispersing 20 parts of methoxy hyperbranched polysiloxane units (p=30), uniformly dispersing at 30-50 ℃ to obtain a hyperbranched polysiloxane unit composite dispersion system, and further dispersing 12 parts of alpha-aminomethyltriethoxysilane/octyl triethoxysilane copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7 and the molecular weight is 1600) to obtain the high-temperature high-humidity siloxane oligomer interface bonding agent composition. The weight portions of the raw materials are calculated in the reaction.
Example 10
This example provides a high temperature, high humidity silicone oligomer interfacial bonding agent composition, which was prepared as follows.
Adding 3 parts of cyclopropoxy glycidyl ether propyl trimethoxy silane grafted epoxy propyl nonionic polyether wetting dispersant into a reaction bottle, adding 15 parts of linear polytetrahydrofuran (Mn=400), heating and stirring at 70-100 ℃, sequentially adding 45 parts of butyl aminopropyl trimethoxy silane/ethyl silicate copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7, mn=1500), adding 5 parts of specific surface area 300 nanometer titanium dioxide particles, uniformly dispersing to obtain an in-situ nano composite molecular size dispersion system, continuously dispersing 20 parts of methoxy hyperbranched polysiloxane units (p=30), uniformly dispersing at 30-50 ℃ to obtain a hyperbranched polysiloxane unit composite dispersion system, and further dispersing 12 parts of alpha-aminomethyltriethoxysilane/octyl triethoxysilane copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7 and molecular weight is 1600) to obtain the high-temperature high-humidity siloxane oligomer interface bonding agent composition. The weight portions of the raw materials are calculated in the reaction.
Example 11
This example provides a high temperature, high humidity silicone oligomer interfacial bonding agent composition, which was prepared as follows.
Adding 3 parts of cyclopropoxy glycidyl ether propyl trimethoxy silane grafted epoxy propyl nonionic polyether wetting dispersant into a reaction bottle, adding 15 parts of linear polytetrahydrofuran (Mn=400), heating and stirring at 70-100 ℃, sequentially adding 45 parts of butyl aminopropyl trimethoxy silane/ethyl silicate copolymerized siloxane oligomer (Mn=1500), adding 5 parts of specific surface area 300 nano calcium carbonate particles, uniformly dispersing to obtain an in-situ nano composite molecular size dispersion system, continuously dispersing 20 parts of methoxy hyperbranched polysiloxane units (p=30) at 30-50 ℃ to obtain a hyperbranched polysiloxane unit composite dispersion system, and further dispersing 12 parts of alpha-aminomethyltriethoxy silane/octyl triethoxy silane copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7 and the molecular weight is 1600) to obtain the high-temperature high-humidity siloxane oligomer interface bonding agent composition. The weight portions of the raw materials are calculated in the reaction.
Example 12
This example provides a high temperature, high humidity silicone oligomer interfacial bonding agent composition, which was prepared as follows.
Adding 3 parts of cyclopropoxy glycidyl ether propyl trimethoxy silane grafted epoxy propyl nonionic polyether wetting dispersant into a reaction bottle, adding 15 parts of linear polytetrahydrofuran (Mn=400), heating and stirring at 70-100 ℃, sequentially adding 45 parts of butyl aminopropyl trimethoxy silane/ethyl silicate copolymerized siloxane oligomer (Mn=1500), adding 5 parts of silica aerogel with the specific surface area of 1200 nanometers, uniformly dispersing to obtain an in-situ nano composite molecular size dispersion system, continuously dispersing 20 parts of methoxy hyperbranched polysiloxane units (p=30) at 30-50 ℃ to obtain a hyperbranched polysiloxane unit composite dispersion system, and further dispersing 12 parts of alpha-mercaptomethyl triethoxysilane/octyl triethoxysilane copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7 and the molecular weight is 1600) to obtain the high-temperature high-humidity siloxane oligomer interface bonding agent composition. The weight portions of the raw materials are calculated in the reaction.
Example 13
This example provides a high temperature, high humidity silicone oligomer interfacial bonding agent composition, which was prepared as follows.
Adding 3 parts of cyclopropoxy glycidyl ether propyl trimethoxy silane grafted epoxy propyl nonionic polyether wetting dispersant into a reaction bottle, adding 15 parts of linear polytetrahydrofuran (Mn=400), heating and stirring at 70-100 ℃, sequentially adding 45 parts of butyl aminopropyl trimethoxy silane/ethyl silicate copolymerized siloxane oligomer (Mn=1500), adding 5 parts of silica aerogel with the specific surface area of 1200 nanometers, uniformly dispersing to obtain an in-situ nano composite molecular size dispersion system, continuously dispersing 20 parts of methoxy hyperbranched polysiloxane units (p=30) at 30-50 ℃ to obtain a hyperbranched polysiloxane unit composite dispersion system, and further dispersing 12 parts of alpha-ethylenediamine methyltriethoxysilane/octyl triethoxysilane copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7 and the molecular weight is 1600) to obtain the high-temperature high-humidity siloxane oligomer interface bonding agent composition. The weight portions of the raw materials are calculated in the reaction.
Example 14
This example provides a high temperature, high humidity silicone oligomer interfacial bonding agent composition, which was prepared as follows.
Adding 3 parts of cyclopropoxy glycidyl ether propyl trimethoxy silane grafted epoxy propyl nonionic polyether wetting dispersant into a reaction bottle, adding 15 parts of linear polytetrahydrofuran (Mn=400), heating and stirring at 70-100 ℃, sequentially adding 45 parts of butyl aminopropyl trimethoxy silane/ethyl silicate copolymerized siloxane oligomer (Mn=1500), adding 5 parts of silica aerogel with the specific surface area of 1200 nanometers, uniformly dispersing to obtain an in-situ nano composite molecular size dispersion system, continuously dispersing 20 parts of methoxy hyperbranched polysiloxane units (p=30) at 30-50 ℃ to obtain a hyperbranched polysiloxane unit composite dispersion system, and further dispersing 12 parts of alpha-ethylenediamine methyltriethoxysilane/methyltriethoxysilane copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7 and the molecular weight is 1600) to obtain the high-temperature high-humidity siloxane oligomer interface bonding agent composition. The weight portions of the raw materials are calculated in the reaction.
Example 15
This example provides a high temperature, high humidity silicone oligomer interfacial bonding agent composition, which was prepared as follows.
Adding 3 parts of cyclopropoxy glycidyl ether propyl trimethoxy silane grafted epoxy propyl nonionic polyether wetting dispersant into a reaction bottle, adding 15 parts of linear polytetrahydrofuran (Mn=400), heating and stirring at 70-100 ℃, sequentially adding 45 parts of butyl aminopropyl trimethoxy silane/ethyl silicate copolymerized siloxane oligomer (Mn=1500), adding 5 parts of silica aerogel with the specific surface area of 1200 nanometers, uniformly dispersing to obtain an in-situ nano composite molecular size dispersion system, continuously dispersing 20 parts of methoxy hyperbranched polysiloxane units (p=30) at 30-50 ℃ to obtain a hyperbranched polysiloxane unit composite dispersion system, and further dispersing 12 parts of alpha-ethylenediamine methyltriethoxysilane/propyl triethoxysilane copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7 and the molecular weight is 1600) to obtain the high-temperature high-humidity siloxane oligomer interface bonding agent composition. The weight portions of the raw materials are calculated in the reaction.
Example 16
This example provides a high temperature, high humidity silicone oligomer interfacial bonding agent composition, which was prepared as follows.
Adding 3 parts of cyclopropoxy glycidyl ether propyl trimethoxy silane grafted epoxy propyl nonionic polyether wetting dispersant into a reaction bottle, adding 15 parts of linear polytetrahydrofuran (Mn=400), heating and stirring at 70-100 ℃, sequentially adding 45 parts of butyl aminopropyl trimethoxy silane/ethyl silicate copolymerized siloxane oligomer (Mn=1500), adding 5 parts of silica aerogel with the specific surface area of 1200 nanometers, uniformly dispersing to obtain an in-situ nano composite molecular size dispersion system, continuously dispersing 20 parts of methoxy hyperbranched polysiloxane units (p=30) at 30-50 ℃ to obtain a hyperbranched polysiloxane unit composite dispersion system, and further obtaining 12 parts of alpha ethylenediamine methyltriethoxysilane/dodecyl triethoxysilane copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7 and the molecular weight is 1600) dispersion system to obtain the high-temperature high-humidity siloxane oligomer interface bonding agent composition. The weight portions of the raw materials are calculated in the reaction.
Example 17
This example provides a high temperature, high humidity silicone oligomer interfacial bonding agent composition, which was prepared as follows.
Adding 2 parts of cyclopropoxy glycidyl ether propyl trimethoxy silane grafted epoxy propyl nonionic polyether wetting dispersant into a reaction bottle, adding 10 parts of linear polytetrahydrofuran (Mn=200), heating and stirring at 70-100 ℃, sequentially adding 50 parts of butyl aminopropyl trimethoxy silane/ethyl silicate copolymerized siloxane oligomer (Mn=600), adding 2 parts of silica aerogel with the specific surface area of 1200 nanometers, uniformly dispersing to obtain an in-situ nano composite molecular size dispersion system, continuously dispersing 5 parts of methoxy hyperbranched polysiloxane units (p=30) at 30-50 ℃ to obtain a hyperbranched polysiloxane unit composite dispersion system, and further dispersing 5 parts of alpha-mercapto methyltriethoxy silane/octyl triethoxy silane copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7 and the molecular weight is 1600) to obtain the high-temperature high-humidity siloxane oligomer interface bonding agent composition. The weight portions of the raw materials are calculated in the reaction.
Example 18
This example provides a high temperature, high humidity silicone oligomer interfacial bonding agent composition, which was prepared as follows.
Adding 5 parts of trimethyl silicon propyl ethylene oxide polyether wetting dispersant into a reaction bottle, adding 5 parts of linear polytetrahydrofuran (Mn=800), heating and stirring at 70-100 ℃, sequentially adding 20 parts of butyl amino propyl trimethoxy silane/ethyl silicate copolymerized siloxane oligomer (Mn=2000), adding 5 parts of silica aerogel with the specific surface area of 1200 nanometers, uniformly dispersing to obtain an in-situ nano composite molecular size dispersion system, continuously dispersing 10 parts of methoxy hyperbranched polysiloxane units (p=30), uniformly dispersing at 30-50 ℃ to obtain a hyperbranched polysiloxane unit composite dispersion system, and further obtaining 15 parts of alpha-mercapto methyl triethoxysilane/octyl triethoxysilane copolymerized siloxane oligomer (a in the molecular formula is 3, b is 7, and the molecular weight is 1600) dispersion system to obtain the high-temperature high-humidity siloxane oligomer interface bonding agent composition. The weight portions of the raw materials are calculated in the reaction.
Comparative example 1
This comparative example provides a consistent high temperature high humidity silicone oligomer interfacial bonding agent composition, which was prepared in a manner consistent with example 13, except that no butylaminopropyltrimethoxysilane/ethyl silicate copoly siloxane oligomer (mn=1500) was added.
Comparative example 2
This comparative example provides a consistent high temperature high humidity silicone oligomer interfacial bonding agent composition, which was prepared in a manner consistent with example 13, except that no linear polytetrahydrofuran (mn=400) was added.
Comparative example 3
This comparative example provides a consistent high temperature high humidity silicone oligomer interfacial bonding agent composition, which is prepared in a manner consistent with example 13, except that no specific surface area 1200 nm silica aerogel is added
Comparative example 4
This comparative example provides a consistent high temperature high humidity silicone oligomer interface bonding agent composition, which was prepared in a manner consistent with example 13, except that no methoxy hyperbranched polysiloxane units (p=30) were added.
Comparative example 5
This comparative example provides a consistent high temperature high humidity silicone oligomer interfacial bonding agent composition, which was prepared in a manner consistent with example 13, except that the alpha ethylenediamine methyltriethoxysilane/octyltriethoxysilane copoly siloxane oligomer was not added.
Comparative example 6
This comparative example provides a consistent high temperature, high humidity silicone oligomer interface bonding agent composition, which was prepared in a manner consistent with example 13, except that no cyclopropoxy glycidyl ether propyl trimethoxysilane grafted glycidylnonionic polyether wetting dispersant was added.
The coating performance detection data comprise surface drying time, real drying time, adhesiveness, solid content, water-soaking resistance time, shelf life and high humidity and high heat resistance duration, wherein the surface drying time is tested by a fingerdrying method, the real drying time is the time from coating to thoroughly preventing sticking of a primer film, the interface bonding damage form test is carried out under the room temperature condition, the bonding retention area of cohesive damage is detected by not less than 90%, the water-soaking resistance is carried out by adopting the water for soaking, the cohesive damage is not less than 90% duration, the shelf life test condition is that the viscosity change is less than or equal to 2 Pa.s duration at 60 ℃, and the high humidity and high heat resistance test condition is that 85% humidity and 85 ℃ are adopted, and the cohesive damage is not less than 90% duration.
The test results are shown in Table 1.
Table 1 Performance test data for the high temperature high humidity silicone oligomer interfacial bonding agent compositions provided in examples 1-18 and ratios 1-6
As can be seen from Table 1, the silicone modified polyether gum and high temperature and high humidity silicone oligomer interfacial bonding agent composition of the present invention exhibits excellent top-drying, dry-out, adhesion, blister resistance, shelf life, and high humidity and high heat resistance. Especially, with the change of the molecular weight of the aminopropyl methoxy silane/ethyl silicate copolymer type siloxane oligomer, the polymerization degree of hyperbranched siloxane, the specific surface area of inorganic nano particles and the structural control of alpha-methyl alkoxy silane/alkyl triethoxy silane copolymer type siloxane oligomer and alkyl groups, the high-temperature and high-humidity adhesion resistance shows different degrees of interface damage and wettability, damp-heat attenuation and water resistance. When the interface bonding agent composition lacks the butyl aminopropyl trimethoxysilane/ethyl silicate copolymer type siloxane oligomer (Mn=1500) (comparative example 1), the adhesion retention area is only not less than 65%, the number of days of soaking resistance is 48 days less than that of example 13, and the high temperature and high humidity duration is reduced by 420 hours, which is mainly because when the butyl aminopropyl trimethoxysilane/ethyl silicate copolymer type siloxane oligomer (Mn=1500) is not added to the interface bonding agent composition of the present invention, the silicone modified polyether gum is difficult to form stable physical and chemical bonds with metals, glass, concrete and plastics, resulting in the silicone modified polyether gum being bonded with metals, The glass, concrete and plastic interfaces are hydrophilic, the bonding strength is greatly reduced, cohesive failure cannot be realized, and meanwhile, the surface drying and solid curing time of the interface bonding agent is prolonged. When linear polytetrahydrofuran (Mn=400) is absent from the interfacial bonding agent composition of the present invention (comparative example 2), interfacial physical affinity is reduced, adhesion retention area is only not less than 58%, and the number of days of soaking resistance is reduced by 34 days as compared with example 13, and high temperature and high humidity duration is reduced by 360 hours, mainly because when linear polytetrahydrofuran is not added to the interfacial bonding agent composition, the interfacial bonding agent composition is difficult to form a ternary block of amino or mercapto silane, silicate and polytetrahydrofuran which can be freely regulated in affinity and hydrophobicity, resulting in inconformity of polar molecular bonds and compatibility, and thus silicone modified polyether gum is preferentially detached from itself, metal cannot be realized, The interfacial bonding agent composition of the present invention lacks the silica aerogel having a specific surface area of 1200 nm (comparative example 3), and has a bonding retention area of not less than 60% and a water resistance of 49 days less than that of example 13, and a high temperature and high humidity duration of 450 hours is reduced, which is mainly because the interfacial bonding agent composition does not add silica aerogel having a specific surface area of 1200 nm, and does not provide the physical surface of micro-nano concavities and convexities on the surface of metal, glass, concrete, and plastic, and thus loses the firm physical occlusion with the molecules of the silicone modified polyether adhesive, and has cohesive force and water resistance failure, and adhesion failure, and the interfacial bonding retention area of not less than 50% and a water resistance of 47 days less than that of example 13 is reduced by 440 hours, which is mainly because the silicone modified polyether adhesive is modified with metal, and the silicone modified polyether adhesive is not weakened by adding the methoxy hyperbranched polysiloxane unit to the interfacial bonding agent composition, when the interfacial bonding agent composition lacks the methoxy hyperbranched polysiloxane unit (p=30) (comparative example 4) Chemical in-situ bonding force of glass, concrete and plastic interface, and on the other hand, siloxane modified polyether glue, metal, glass and concrete, when the alpha-ethylenediamine methyltriethoxysilane/octyltriethoxysilane copolymerized siloxane oligomer (comparative example 5) is absent from the interface bonding agent composition of the invention, the bonding retention area is only more than or equal to 50%, and compared with example 13, the number of days of soaking water is less than 47 days, and the high-temperature and high-humidity duration is reduced by 480 hours, which is mainly because when the interface bonding agent composition is not added with the alpha-ethylenediamine methyltriethoxysilane/octyltriethoxysilane copolymerized siloxane oligomer, the silicone modified polyether glue is weakened with metal, glass, concrete, When the interface bonding agent composition of the invention lacks the cyclopropoxy glycidyl ether propyl trimethoxy silane grafted glycidol nonionic polyether wetting dispersant (comparative example 6), compared with the example 13, the number of days of soaking resistance is 42 days, and the duration of high temperature and high humidity is reduced by 460 hours, which is mainly because when the interface bonding agent composition does not add polyether wetting dispersant, the Mn=1500 butyl aminopropyl trimethoxy silane/ethyl silicate copolymerized siloxane oligomer and the specific surface area 1200 nanometer silica aerogel are difficult to uniformly disperse due to poor compatibility, structural defects are aggravated, and the bonding is greatly disabled under the wet heat cycle.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.

Claims (7)

1. The high-temperature and high-humidity resistant siloxane oligomer interface bonding agent composition is characterized by comprising the following components in parts by weight:
The amino or mercapto/silicate copolymer siloxane oligomer has a structure as shown in formula I:
Wherein R 1 and R are respectively alkyl of C 1~C4, R 2 is alkyl or aryl of C 1~C4, X is primary amino, secondary amino, ethylenediamine or mercapto, a and b are respectively positive integers of 0-10 and 2-a+b is less than or equal to 20;
The molecular formula of the hyperbranched polysiloxane unit is shown as formula II:
In the formula II, R 3 is saturated straight-chain or branched-chain alkyl with the carbon number of C 1~C4, and p represents a positive integer of 20-80;
the molecular formula of the alpha-type active alkyl copolymerization type siloxane oligomer is shown in a formula III:
In the formula III, Y is NH, NH 2CH2CH2 NH or SH group, R 5 is alkyl of C 1~C4, R 4 is alkyl of C 1~C12, a and b are positive integers of 0-10 respectively, and a+b is 2-20.
2. The high-temperature and high-humidity resistant siloxane oligomer interface bonding agent composition according to claim 1, wherein the composition comprises the following components in percentage by mass:
3. The high-temperature and high-humidity silicone oligomer interface bonding agent composition according to claim 1, wherein the amino-or mercapto-silicate-copolymerized silicone oligomer has a number average molecular weight Mn of 600-2000.
4. The high temperature and high humidity silicone oligomer interface bonding agent composition of claim 1, wherein the low molecular weight polyether is one of a linear ethylene oxide and propylene oxide copolymer, a linear ethylene oxide homopolymer, a linear propylene oxide homopolymer, or a linear tetrahydrofuran ether homopolymer, and wherein the number average molecular weight of the low molecular weight polyether is in the range of 200-800.
5. The high-temperature and high-humidity siloxane oligomer interface bonding agent composition according to claim 1, wherein the high-specific surface area inorganic nanoparticles are one or a mixture of more than two of nano silicon dioxide, nano titanium dioxide and nano calcium carbonate, and the siloxane wetting dispersant is one or a mixture of two of trimethylsiloxyethylene oxide nonionic surfactant or crosslinked epoxy glycidyl ether silane nonionic surfactant.
6. The method for preparing the high-temperature and high-humidity siloxane oligomer interface bonding agent composition according to any one of claims 1 to 5, which is characterized by comprising the following steps:
Adding a siloxane wetting dispersant into low molecular weight polyether, heating and stirring at 70-100 ℃, adding amino or mercapto/silicate copolymer siloxane oligomer, and then adding high specific surface area inorganic nano particles to uniformly disperse to obtain an in-situ nano composite molecular-grade size dispersion system;
B, dropwise adding the hyperbranched polysiloxane unit into the dispersion system in the step A under the stirring condition at the temperature of 30-50 ℃, and uniformly stirring and dispersing to obtain a hyperbranched polysiloxane unit composite dispersion system;
And C, adding the alpha-type active alkyl copolymerization type siloxane oligomer into the dispersion system in the step B, and uniformly dispersing to obtain the high-temperature high-humidity siloxane oligomer interface bonding agent composition.
7. The application of the high-temperature and high-humidity siloxane oligomer interface bonding agent composition according to any one of claims 1-5 is characterized in that the composition is used for interface bonding regulation and control application of moisture-cured siloxane modified polyether sealant and interface bonding of metal, glass, concrete and plastic in an extremely high-temperature and high-humidity environment.
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