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CN111808552A - Multipurpose reactive hot melt adhesive and preparation method thereof - Google Patents

Multipurpose reactive hot melt adhesive and preparation method thereof Download PDF

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Publication number
CN111808552A
CN111808552A CN202010649835.5A CN202010649835A CN111808552A CN 111808552 A CN111808552 A CN 111808552A CN 202010649835 A CN202010649835 A CN 202010649835A CN 111808552 A CN111808552 A CN 111808552A
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Prior art keywords
hot melt
melt adhesive
multipurpose
reactive hot
polyolefin resin
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CN202010649835.5A
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陈坚
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Priority to CN202010649835.5A priority Critical patent/CN111808552A/en
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J123/00Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/26Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers modified by chemical after-treatment
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J151/00Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
    • C09J151/06Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/08Stabilised against heat, light or radiation or oxydation
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to a multipurpose reactive hot melt adhesive and a manufacturing method thereof. The purpose is to provide a multipurpose reactive hot melt adhesive and a manufacturing method thereof, wherein the reactive hot melt adhesive has excellent bonding performance; the composite material can be used for laminating, heating and compounding various materials such as PE, PP, EVOH, PA, PS, PET, PBT, PC, PVC, wood, metal, glass and the like; the performance of the material in a high-temperature environment is obviously improved, and the finished product has better thermal aging resistance and creep resistance. The technical scheme is as follows: a multipurpose reactive hot melt adhesive comprises the following components in parts by weight: silane-grafted crosslinkable polyolefin resin: 20-30 parts of a solvent; acid substance-grafted polyolefin resin: 20-50 parts; polyhydroxy polyolefin polymer: 20-40 parts; dibutyltin dilaurate: 0.5 to 1.5 portions.

Description

Multipurpose reactive hot melt adhesive and preparation method thereof
Technical Field
The invention relates to a multipurpose reactive hot melt adhesive and a manufacturing method thereof.
Background
The main direction of the development of the plastic alloy material technology in the world is light weight and environmental protection, and a large amount of plastic metal composite technology is used for manufacturing multilayer boards, including food packaging aluminum-plastic composite bags, aluminum honeycomb boards, wood-plastic composites, aluminum-wood composites and other multiple material composite bonding; a plurality of material composite processes are widely applied in industrial production, but the current really applicable adhesive has few effects and poor effect, and the layers are easy to loosen and peel after long-term use. The composite materials used in each plant are different from each other in types such as PE, PP, EVOH, PA, PS, PET, PBT, PC, wood, metal, glass and the like.
Because the varieties of plastic alloys selected by various composite manufacturers are different, a multipurpose reactive hot melt adhesive with good bonding effect is more needed in the field.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a multipurpose reactive hot melt adhesive and a manufacturing method thereof, wherein the reactive hot melt adhesive has excellent bonding performance; the composite material can be used for laminating, heating and compounding various materials such as PE, PP, EVOH, PA, PS, PET, PBT, PC, PVC, wood, metal, glass and the like; the performance of the material in a high-temperature environment is obviously improved, and the finished product has better thermal aging resistance and creep resistance.
The technical scheme provided by the invention is as follows:
a multipurpose reactive hot melt adhesive comprises the following components in parts by weight:
Figure BDA0002574531190000011
a multipurpose reactive hot melt adhesive comprises the following components in parts by weight:
Figure BDA0002574531190000021
the manufacturing method of the multipurpose reactive hot melt adhesive comprises the following steps:
the first step is as follows: firstly, heating the temperature of a reaction kettle to 100-110 ℃, then adding a polyhydroxy polyolefin polymer, filling nitrogen for protection and stirring, wherein the stirring time is 20 +/-2 minutes;
the second step is that: adding acidic substance grafted polyolefin resin, and filling nitrogen to protect, stir and melt for 30 +/-3 minutes;
the third step: heating the temperature of the reaction kettle to 190-200 ℃, adding silane grafted crosslinkable polyolefin resin, filling nitrogen for protection, stirring and melting for 90 +/-5 minutes; then closing the nitrogen gas to carry out vacuum pumping and stirring for 25 +/-2 minutes, wherein the vacuum degree is less than the atmospheric pressure of 0.07-0.09 MPa; vacuumizing, charging nitrogen again for protection, discharging and barreling; a 3-layer sealed pouch or sealed-layer tub package that can absolutely exclude moisture was selected.
The multipurpose reactive hot melt adhesive product obtained by the invention can be mainly used for manufacturing multilayer boards by a plastic metal composite process through a conventional sealing hot melt adhesive machine or hot melt adhesive rolling equipment, an online gluing composite equipment and the like, and comprises a circuit printed circuit board, a food packaging aluminum-plastic composite bag, an aluminum honeycomb board, a wood-plastic composite, a metal and wood composite and other multiple materials for composite bonding.
The reaction mechanism of the multipurpose reactive hot melt adhesive is as follows: the moisture in the air can chemically react with the siloxane groups to be cured and generate a small amount of methanol, finally a stable three-dimensional network structure of Si-O-Si bonds is formed, the dibutyltin dilaurate can accelerate the curing reaction, and the curing speed depends on various factors, such as the capability of water to diffuse from the surface to the siloxane groups, the water content of the substrate, the curing temperature and thickness of the adhesive and the dosage of the catalyst (if sufficient moisture exists and the temperature is 23 ℃, the highest strength can be achieved after 144 hours).
The technical indexes of the product obtained by the invention after inspection are as follows:
Figure BDA0002574531190000031
the invention has the beneficial effects that:
the invention has the characteristics of excellent bonding performance, simple process, convenient manufacture and use and wide range of bonding materials, is suitable for bonding manufacture of multi-layer plates of most materials on the market, can obviously improve the performance of the materials in a high-temperature environment, and ensures that the finished products have better heat aging resistance and creep resistance.
Detailed Description
The method takes polyolefin resin of silane grafting cross-linking reaction, acidic substance grafting polyolefin resin, polyhydroxy polyolefin polymer and dibutyltin dilaurate as raw materials, carries out melting and stirring uniformly under the protection of multiple nitrogen, and packages by an air isolation packaging bag of a release coating; in the manufacturing process, the bonding strength of the product can be adjusted by the proportion of polyolefin resin of silane grafting and crosslinking reaction, and the curing time and speed are adjusted by the proportion of dibutyltin dilaurate; the acidic substance grafted polyolefin resin and the polyhydroxy polyolefin polymer have the adhesive property to most products in the formula, and the viscosity of the adhesive is reduced; the more the acid substance grafted polyolefin resin is, the greater the bonding strength to various materials is, the properties of the polyhydroxy polyolefin polymer such as adhesiveness, flexibility, lubricity, dispersibility and the like can be improved, the melt viscosity of the adhesive is reduced, and the reaction of each component is carried out by utilizing the hydroxyl at the tail end, so that the product is more firmly crosslinked and cured at the later stage of composite bonding.
Thus, the formulations of the present invention comprise: 20-30 parts of polyolefin resin subjected to silane grafting and crosslinking reaction, 20-50 parts of acidic substance grafted polyolefin resin, 20-40 parts of polyhydroxy polyolefin polymer and 0.5-1.5 parts of dibutyltin dilaurate.
The silane-grafted cross-linkable polyolefin resin is available from mitsubishi company Linklon brand SS 703N;
the acidic substance-grafted polyolefin resin is available from Mitsubishi corporation of Japan under MODIC brand number Z041F;
the polyhydroxy polyolefin polymer was purchased from Mitsubishi, PolyTAIL brand H.
The invention provides a method for preparing a multipurpose reactive hot melt adhesive, which comprises the following steps:
firstly, heating the temperature of a reaction kettle to 110 ℃ below zero and 100 ℃, then adding a polyhydroxy polyolefin polymer, filling nitrogen for protection and stirring, wherein the stirring time is 20 +/-2 minutes;
secondly, adding acidic substance grafted polyolefin resin, filling nitrogen to protect, stirring and melting for 30 +/-3 minutes;
thirdly, raising the temperature of the reaction kettle to 190-200 ℃, adding silane grafted crosslinkable polyolefin resin, and filling nitrogen to protect, stir and melt for 90 +/-5 minutes; then closing the nitrogen gas to carry out vacuum pumping and stirring, wherein the vacuum pumping time is 25 +/-2 minutes, and the vacuum degree is less than the atmospheric pressure of 0.07Mpa to 0.09 Mpa; and vacuumizing, then filling nitrogen for protection, discharging and barreling, and selecting a 3-layer separation type sealing bag or a barrel package with a separation type sealing layer which can absolutely isolate moisture.
The present invention is further illustrated by the following examples.
Figure BDA0002574531190000041
The data in the table are in parts by weight.
The manufacturing method of the above 5 embodiments is: firstly, heating the temperature of a reaction kettle to 110 ℃ below zero, then adding a polyhydroxy polyolefin polymer, introducing nitrogen for protection and stirring, wherein the stirring time is 20 +/-2 minutes; secondly, adding an acidic substance grafted polyolefin resin, filling nitrogen for protection, stirring and melting for 30 +/-3 minutes; thirdly, heating the temperature of the reaction kettle to 190-200 ℃, adding silane grafted crosslinkable polyolefin resin, filling nitrogen for protection, stirring and melting for 90 minutes; and then closing nitrogen gas, vacuumizing and stirring for 25 +/-2 minutes, wherein the vacuum degree is less than the atmospheric pressure of 0.07-0.09 Mpa, vacuumizing, then filling nitrogen gas for protection, discharging and barreling, and selecting a 3-layer separation type sealing bag or a barrel with a separation type sealing layer which can absolutely isolate moisture and packaging.
Product index
Figure BDA0002574531190000051
The test results for the five examples above are as follows:
example 1: the polyolefin resin content of the silane grafting cross-linking reaction is small, and the shear strength is small.
Example 2: the content of polyolefin resin in silane grafting and crosslinking reaction is increased, and the content of polyolefin resin grafted by acidic substances is reduced; the peel strength and the shear strength are increased, and the technical requirements are basically met.
Example 3: the content of polyolefin resin of silane grafting cross-linking reaction is increased; the amount of the acidic substance grafted polyolefin resin is not changed; and the dibutyltin dilaurate is increased, so that the stripping force is obviously increased, the shear strength is also obviously increased, and the technical requirements are met.
Example 4: the content of polyolefin resin of silane grafting cross-linking reaction is continuously increased; the amount of the acidic substance grafted polyolefin resin is increased, the amount of dibutyltin dilaurate is reduced, the peeling force is continuously increased, the shear strength is reduced, the adhesive strength is increased, and the requirements are basically met.
Example 5: the content of polyolefin resin of silane grafting cross-linking reaction is continuously increased; the amount of the acidic substance grafted polyolefin resin increases; the amount of the polyhydroxy polyolefin polymer is reduced, the amount of dibutyltin dilaurate is reduced, the peel strength is basically unchanged, the shear strength is basically unchanged, and the viscosity is obviously increased, so that the technical requirements cannot be met.
Effect of cure time for 5 examples on peel and shear Strength of the product
(1)24 hours
Figure BDA0002574531190000061
(2)48 hours
Figure BDA0002574531190000062
(3)72 hours
Figure BDA0002574531190000063
(4)96 hours
Figure BDA0002574531190000064
Figure BDA0002574531190000071
(5)120 hours
Figure BDA0002574531190000072
(6)144 hours
Figure BDA0002574531190000073
(7)168 hours
Figure BDA0002574531190000074
Figure BDA0002574531190000081
The curing time of the above 5 embodiments clearly shows that the performance of the reactive hot melt adhesive can reach the strongest level after 144 hours of construction adhesion through the test data of 7 time periods for the peel strength and the shear strength of the product.
The products obtained by combining the above examples 2 to 3 have more ideal effects.
The above examples are merely illustrative for clarity and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims (3)

1. A multipurpose reactive hot melt adhesive comprises the following components in parts by weight:
Figure FDA0002574531180000011
2. a multipurpose reactive hot melt adhesive comprises the following components in parts by weight:
Figure FDA0002574531180000012
3. the multipurpose reactive hot melt adhesive according to claim 1 or 2, wherein: the manufacturing method of the multipurpose reactive hot melt adhesive comprises the following steps:
the first step is as follows: firstly, heating the temperature of a reaction kettle to 100-110 ℃, then adding a polyhydroxy polyolefin polymer, filling nitrogen for protection and stirring, wherein the stirring time is 20 +/-2 minutes;
the second step is that: adding acidic substance grafted polyolefin resin, and filling nitrogen to protect, stir and melt for 30 +/-3 minutes;
the third step: heating the temperature of the reaction kettle to 190-200 ℃, adding silane grafted crosslinkable polyolefin resin, filling nitrogen for protection, stirring and melting for 90 +/-5 minutes; then closing the nitrogen gas to carry out vacuum pumping and stirring for 25 +/-2 minutes, wherein the vacuum degree is less than the atmospheric pressure of 0.07-0.09 MPa; vacuumizing, charging nitrogen again for protection, discharging and barreling; a 3-layer sealed pouch or sealed-layer tub package that can absolutely exclude moisture was selected.
CN202010649835.5A 2020-07-08 2020-07-08 Multipurpose reactive hot melt adhesive and preparation method thereof Pending CN111808552A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112358833A (en) * 2020-11-09 2021-02-12 吴文静 Reactive hot melt adhesive raw material and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004176028A (en) * 2002-11-27 2004-06-24 Hitachi Kasei Polymer Co Ltd Reactive hot melt adhesive composition
CN101248099A (en) * 2005-07-11 2008-08-20 陶氏环球技术公司 Silane-grafted olefin polymers, compositions and articles prepared therefrom, and methods for making the same
CN102906125A (en) * 2010-05-26 2013-01-30 出光兴产株式会社 Terminally unsaturated polyolefin and process for producing the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004176028A (en) * 2002-11-27 2004-06-24 Hitachi Kasei Polymer Co Ltd Reactive hot melt adhesive composition
CN101248099A (en) * 2005-07-11 2008-08-20 陶氏环球技术公司 Silane-grafted olefin polymers, compositions and articles prepared therefrom, and methods for making the same
CN102906125A (en) * 2010-05-26 2013-01-30 出光兴产株式会社 Terminally unsaturated polyolefin and process for producing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112358833A (en) * 2020-11-09 2021-02-12 吴文静 Reactive hot melt adhesive raw material and preparation method thereof

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Application publication date: 20201023

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