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CN111777964B - Self-adhesive modified asphalt building waterproofing membrane and preparation method and construction method - Google Patents

Self-adhesive modified asphalt building waterproofing membrane and preparation method and construction method Download PDF

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Publication number
CN111777964B
CN111777964B CN202010676287.5A CN202010676287A CN111777964B CN 111777964 B CN111777964 B CN 111777964B CN 202010676287 A CN202010676287 A CN 202010676287A CN 111777964 B CN111777964 B CN 111777964B
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modified asphalt
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adhesive
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CN111777964A (en
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梁泽伟
张强
莫刚
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Jiangsu Duoju New Material Technology Co ltd
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Jiangsu Duoju New Material Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/08—Macromolecular additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J195/00—Adhesives based on bituminous materials, e.g. asphalt, tar, pitch
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
    • C09J5/02—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers involving pretreatment of the surfaces to be joined
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/16—Sealings or joints
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
    • E02D31/025—Draining membranes, sheets or fabric specially adapted therefor, e.g. with dimples
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2495/00—Presence of bitume
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2495/00—Presence of bitume
    • C09J2495/006—Presence of bitume in the substrate

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Abstract

本发明属于建筑防水材料领域，公开一种自粘性改性沥青建筑防水卷材及制备方法和施工方法；自粘性改性沥青建筑防水卷材：包括改性沥青层、粘接层以及敷于粘接层的隔离防护膜；其中，粘接层在丁基橡胶自粘层中预先植入了聚氨酯预聚体，其在施工时，通过在建筑基面预先喷洒一层端氨基聚醚与液态胺的分散液，使得在丁基橡胶粘接的同时，聚氨酯预聚体迅速与建筑基面的端氨基聚醚、液态胺扩链形成聚脲层，聚脲疏水性极强，对环境湿度不敏感，在极端恶劣的环境条件下可正常施工，从而有效地将防水卷材粘合在建筑基面而不受基面含水的影响。

The invention belongs to the field of building waterproof materials, and discloses a self-adhesive modified asphalt building waterproof roll material, a preparation method and a construction method; the self-adhesive modified asphalt building waterproof roll material comprises a modified asphalt layer, an adhesive layer and an isolation protective film applied to the adhesive layer; wherein, the adhesive layer is pre-implanted with a polyurethane prepolymer in a butyl rubber self-adhesive layer, and during construction, a layer of dispersion liquid of amino-terminated polyether and liquid amine is pre-sprayed on a building base surface, so that while the butyl rubber is bonded, the polyurethane prepolymer quickly extends the chain with the amino-terminated polyether and liquid amine on the building base surface to form a polyurea layer, the polyurea has extremely strong hydrophobicity, is insensitive to environmental humidity, and can be normally constructed under extremely harsh environmental conditions, thereby effectively bonding the waterproof roll material to the building base surface without being affected by the water content of the base surface.

Description

Self-adhesive modified asphalt building waterproof coiled material, preparation method and construction method
Technical Field
The invention belongs to the field of building waterproof materials, in particular relates to a waterproof coiled material for building engineering, and particularly relates to a self-adhesive modified asphalt building waterproof coiled material, a preparation method and a construction method.
Background
The waterproof construction is used as an important construction part of the existing building engineering, and the waterproof effect of the waterproof construction makes a great breakthrough in the aspects of waterproof performance, construction convenience and the like along with the development of novel material technology. Such as rigid mortar waterproof agent, cement-based (rigid) waterproof paint, permeable crystalline waterproof paint, flexible polymer waterproof paint and waterproof coiled material, are applied in large scale in building waterproof engineering.
The waterproof coiled material is used as a material capable of large-area construction and high-efficiency water isolation, and has large application amount in the fields with high waterproof requirements such as building basements, tunnels and the like. In particular, the flexibility of the waterproof coiled material can effectively prevent cracking caused by underground deformation and the like, which is difficult to achieve by other rigid waterproof materials. The waterproof coiled materials commonly used at present mainly comprise modified asphalt waterproof coiled materials, polyethylene polypropylene waterproof coiled materials, PVC waterproof coiled materials, ethylene propylene diene monomer waterproof coiled materials and the like. According to the use practice, the modified asphalt waterproof coiled material becomes the first choice in the building waterproof construction of large-scale underground engineering, tunnels and the like. The main reason is that asphalt waterproof coiled materials are excellent in self-healing compared with other coiled materials, and can adapt to waterproof of underground settlement deformation and the like. After the broken microcracks appear, the self-flow of asphalt can realize self-repair.
The firm bond of the asphalt web to the building base directly determines the water resistance and durability. After the coiled material is tightly adhered to the building base surface, even if the building base surface is cracked, the asphalt waterproof coiled material can be deformed slightly, compact and repair the crack, however, if the adhesion is not firm, the coiled material and the building base surface can be separated to form a hollowing, and water channeling and seepage are easy. The biggest obstacle of the waterproof coiled material in the use process is the problem of adhesion between the waterproof coiled material and a base surface. The traditional asphalt waterproof coiled material construction mainly comprises the steps of heating the coiled material through a hot spray gun to enable the surface to be hot melted and then bonding the surface with a building base layer. The hot-melting method construction is low in cost, but is easy to damage coiled materials and age the surfaces, and once the construction is bonded with a building base surface at one time, the bonding contact is not tight, empty drums are caused, the repairing is difficult, and water can easily flow in the empty drum.
The cold bonding method is the main direction of the development of the asphalt waterproof coiled material at present. By providing an adhesive layer on the web side, realizing coiled material self-adhesion. At present, self-adhesive modified asphalt-based waterproof coiled materials in the market are gradually popularized and used. The self-adhesive modified asphalt-based waterproof coiled material is simple and convenient to construct on one hand, is tightly adhered to a building base surface on the other hand, does not form empty drums, and can be removed by later inspection and repair even if the empty drums are formed.
However, the adhesive layer of the existing self-adhesive modified asphalt building waterproof coiled material is mainly formed by butyl rubber, terpene resin, hydrogenated rosin, naphthenic oil and the like. The adhesive force is mainly based on Van der Waals force or hydrogen bond secondary bond between the adhesive layer and the concrete surface, is a physical acting force, and is reduced with the increase of time, so that the problems of bulge and water channeling are finally generated. And most construction environments have difficulty meeting these requirements. In particular, most of the application surface contains water, which results in a decrease in the bonding strength.
Disclosure of Invention
Aiming at the problems that the existing self-adhesive modified asphalt building waterproof coiled material is poor in bonding firmness with a building base surface and the requirement on the water content of the building base surface is severe in bonding construction, the invention provides the self-adhesive modified asphalt building waterproof coiled material for improving the bonding property and construction adaptability of the self-adhesive modified asphalt building waterproof coiled material, and further provides a preparation method and a construction method of the self-adhesive modified asphalt building waterproof coiled material.
Firstly, the first object of the invention is a self-adhesive modified asphalt building waterproof coiled material, which is characterized by comprising a modified asphalt layer, an adhesive layer and an isolation protective film coated on the adhesive layer, wherein:
the modified asphalt layer is prepared by the following method:
Adding 3-5 parts by weight of asbestos, 1-3 parts by weight of nano silicon dioxide, 5-10 parts by weight of regenerated rubber powder, 10-15 parts by weight of SBS, 1-2 parts by weight of coumarone resin, 0.01-0.03 part by weight of maleic anhydride, 0.1-0.3 part by weight of antioxidant, 3-5 parts by weight of bentonite and 80-100 parts by weight of No. 90 asphalt material into a mixer, uniformly mixing, then feeding into a double-screw extruder for melt mixing, extruding through a T-shaped die opening, and rolling by three rollers to obtain a modified asphalt layer with the thickness of 1.0-2.0 mm;
The bonding layer is prepared by the following method:
Adding 10-15 parts by weight of polyether polyol into a stirring container, heating to 110 ℃, then dehydrating in vacuum for 1h, cooling to 40-50 ℃, adding 15-20 parts by weight of polyisocyanate, reacting at 80 ℃ for 1-2 h, and preserving heat at 50 ℃ for 1-3h to obtain polyurethane prepolymer, inputting the polyurethane prepolymer into a colloid grinder, and then adding 30-40 parts by weight of 130 # asphalt, 10-15 parts by weight of styrene-butadiene rubber, 5-10 parts by weight of rosin resin and 15-20 parts by weight of aromatic oil into the mixture to grind the mixture into a colloid to serve as an adhesive layer;
The isolation protective film is one of a PET film, a PVC film and a PP film.
Preferably, the antioxidant is selected from one or a compound of two of antioxidant 1010 and antioxidant 168.
Preferably, the reclaimed rubber powder is reclaimed rubber prepared by grinding waste tires with granularity smaller than 100 meshes, and mainly reduces cost and increases toughness of coiled materials.
Preferably, on the one hand, the nano silicon dioxide can increase the compactness of the coiled material, and the nano silicon dioxide is added to be beneficial to the combination with concrete.
The second object of the invention is a preparation method of self-adhesive modified asphalt building waterproof coiled material, which is characterized by comprising the following specific preparation method:
(1) Adding 10-15 parts by weight of polyether polyol into a stirring container, heating to 110 ℃, then dehydrating in vacuum for 1h, cooling to 40-50 ℃, adding 15-20 parts by weight of polyisocyanate, reacting at 80 ℃ for 1-2 h, and preserving heat at 50 ℃ for 1-3h to obtain polyurethane prepolymer;
(2) Adding 3-5 parts by weight of asbestos, 1-3 parts by weight of nano silicon dioxide, 5-10 parts by weight of regenerated rubber powder, 10-15 parts by weight of SBS, 1-2 parts by weight of coumarone resin, 0.01-0.03 part by weight of maleic anhydride, 0.1-0.3 part by weight of antioxidant, 3-5 parts by weight of bentonite and 80-100 parts by weight of No. 90 asphalt material into a mixer, uniformly mixing, then feeding into a double-screw extruder for melt mixing, extruding through a T-shaped die opening, and rolling by three rollers to obtain a modified asphalt layer with the thickness of 1.0-2.0 mm;
(3) And (3) spreading the jelly obtained in the step (1) on the modified asphalt layer while the rolled modified asphalt layer is hot, then spreading an isolation protective film, flattening by a roller, coiling, sealing and packaging to obtain the self-adhesive modified asphalt building waterproof coiled material.
Preferably, the melting and mixing temperature of the double-screw extruder is set at 130-140 ℃, the temperature of the three rollers is controlled at 50-60 ℃, the roller sticking is caused by the overhigh temperature, and the adhesiveness of the subsequent jelly is influenced by the overlow temperature.
Further preferably, the jelly is knife coated on the modified asphalt layer, and the knife coating thickness is 0.3-0.5mm.
The third object of the invention is a construction method of self-adhesive modified asphalt building waterproof coiled material, which is characterized in that the specific construction method comprises the following steps:
(1) Cleaning sundries, floating dust and water stains on a construction base surface;
(2) Uniformly dispersing 20-30 parts by weight of amine-terminated polyether and 10-15 parts by weight of liquid amine, and spraying and wetting on a building base surface;
(3) And (3) removing the isolation protective film of the self-adhesive modified asphalt building waterproof coiled material, rapidly adhering the isolation protective film to a base surface, compacting and flattening the isolation protective film, and finishing paving.
Preferably, the amino-terminated polyether is D-2000 amino-terminated polyether produced by Basoff, and the D-2000 amino-terminated polyether is an active chain extender for polyurethane, and can rapidly chain-extend polyurethane prepolymer.
Preferably, the liquid amine is selected from one of diethyl toluenediamine, dimethyl thiotoluenediamine and N, N' -dialkyl methyl diphenylamine.
Different from the conventional self-adhesive asphalt waterproof coiled material, in order to increase the bonding firmness of the modified asphalt waterproof coiled material and a building base surface and avoid the influence of moisture contained in the building base surface on the bonding property, the polyurethane prepolymer is pre-implanted in the butyl rubber self-adhesive layer, and when the self-adhesive asphalt waterproof coiled material is constructed, a layer of dispersion liquid of amino-terminated polyether and liquid amine is sprayed on the building base surface in advance, so that the polyurethane prepolymer forms a polyurea layer with the amino-terminated polyether and the liquid amine of the building base surface in a chain extending manner when the butyl rubber is bonded, the polyurea is extremely high in hydrophobicity, insensitive to environmental humidity, even can form a film on water, and can be normally constructed under extremely severe environmental conditions, thereby effectively bonding the coiled material on the building base surface without being influenced by the moisture of the base surface. The self-adhesive modified asphalt building waterproof coiled material has wide adaptability, is particularly suitable for construction in a humid environment, and is suitable for waterproof construction of waterproof projects under basements, artificial lakes, culverts, tunnels, subways and the like and waterproof constructions with complex environments.
Compared with the self-adhesive waterproof coiled material, the self-adhesive modified asphalt building waterproof coiled material has the outstanding technical advantages that:
(1) According to the invention, the polyurethane prepolymer is pre-planted in the self-adhesive layer, and a layer of amine-terminated polyether and liquid amine dispersion liquid are sprayed on the building base surface during construction, so that the polyurethane prepolymer can be quickly formed into polyurea to be adhered on the base surface, the adaptability in a humid environment is strong, and the adhesion is not affected by the humidity of the environment.
(2) The self-adhesive modified asphalt building waterproof coiled material has wide adaptability, is particularly suitable for construction in a humid environment, and is suitable for waterproof construction of waterproof projects under basements, artificial lakes, culverts, tunnels, subways and the like and waterproof construction with complex environment. After the adhesive is paved, the adhesive can not bulge and water channeling caused by environmental humidity and the like, so that the water is effectively prevented from penetrating, and the adhesive can not be mixed and leaked even if the water is penetrated.
(3) The self-adhesive modified asphalt building waterproof coiled material further expands the use environment of the waterproof coiled material, so that the construction does not put strict requirements on a building base surface any more, and the construction progress is greatly improved.
Drawings
The invention is further described with reference to the accompanying drawings:
Fig. 1 is a schematic view of a self-adhesive modified asphalt construction waterproof roll of the present invention. 1, a modified asphalt layer, 2, an adhesive layer and 3, an isolation protective film.
Detailed Description
The following examples are intended to further describe the present invention without limiting the scope of the claims.
Example 1
The preparation method of the self-adhesive modified asphalt building waterproof coiled material comprises the following steps:
(1) Adding 15 parts by weight of polyethylene glycol ether polymer with molecular weight of 3000 into a stirring container, heating to 110 ℃, then dehydrating in vacuum for 1 hour, cooling to 40 ℃, adding 20 parts by weight of 4,4' -diphenylmethane diisocyanate, reacting for 2 hours at 80 ℃, and preserving heat for 1 hour at 50 ℃ to obtain polyurethane prepolymer;
(2) Adding 5 parts by weight of asbestos, 1 part by weight of nano silicon dioxide, 5 parts by weight of regenerated rubber powder, 15 parts by weight of SBS, 2 parts by weight of coumarone resin, 0.01 part by weight of maleic anhydride, 0.1 part by weight of 1010 antioxidant, 3 parts by weight of bentonite and 100 parts by weight of 90 # asphalt material into a mixer, uniformly mixing, then feeding into a double-screw extruder, melting and mixing at 130-140 ℃, extruding through a T-shaped die opening, and rolling by three rollers, wherein the temperature of the three rollers is controlled at 50-60 ℃, so as to obtain a modified asphalt layer with the thickness of 2.0 mm;
(3) The rolled modified asphalt layer in the step (2) is coated on the modified asphalt layer in a scraping way with the thickness of 0.5mm, then a PET film is coated, a roller is leveled, and the rolled modified asphalt layer is coiled, sealed and packaged, so that the self-adhesive modified asphalt building waterproof coiled material is obtained.
The construction method comprises the following steps:
(1) Cleaning sundries, floating dust and water stains on a construction base surface;
(2) Uniformly dispersing 30 parts by weight of D-2000 end amino polyether and 15 parts by weight of diethyl toluenediamine, and spraying and wetting on a building base surface;
(3) And (3) removing the isolation protective film of the self-adhesive modified asphalt building waterproof coiled material, rapidly adhering the isolation protective film to a base surface, compacting and flattening the isolation protective film, and finishing paving.
Example 2
The preparation method of the self-adhesive modified asphalt building waterproof coiled material comprises the following steps:
(1) Adding 10 parts by weight of 2000-molecular-weight polypropylene glycol ether into a stirring container, heating to 110 ℃, then dehydrating in vacuum for 1 hour, cooling to 50 ℃, adding 15 parts by weight of 4, 4' -diphenylmethane diisocyanate, reacting for 1 hour at 80 ℃, and preserving heat for 1 hour at 50 ℃ to obtain polyurethane prepolymer;
(2) Adding 3 parts by weight of asbestos, 1 part by weight of nano silicon dioxide, 10 parts by weight of regenerated rubber powder, 15 parts by weight of SBS, 2 parts by weight of coumarone resin, 0.01 part by weight of maleic anhydride, 0.2 part by weight of 1010 antioxidant, 5 parts by weight of bentonite and 90 parts by weight of 90 # asphalt material into a mixer, uniformly mixing, then feeding into a double-screw extruder, melting and mixing at 130-140 ℃, extruding through a T-shaped die opening, and rolling by three rollers, wherein the temperature of the three rollers is controlled at 50-60 ℃, so as to obtain a modified asphalt layer with the thickness of 2.0 mm;
(3) The rolled modified asphalt layer in the step (2) is coated on the modified asphalt layer in a scraping way with the thickness of 0.4mm, then a PET film of an isolation protective film is coated, and the self-adhesive modified asphalt building waterproof coiled material is obtained through flattening, coiling, sealing and packaging of the roller.
The construction method comprises the following steps:
(1) Cleaning sundries, floating dust and water stains on a construction base surface;
(2) Uniformly dispersing 20 parts by weight of D-2000 end amino polyether and 15 parts by weight of N, N' -dialkyl methyl diphenylamine, and spraying and wetting on a building base surface;
(3) And (3) removing the isolation protective film of the self-adhesive modified asphalt building waterproof coiled material, rapidly adhering the isolation protective film to a base surface, compacting and flattening the isolation protective film, and finishing paving.
Example 3
The preparation method of the self-adhesive modified asphalt building waterproof coiled material comprises the following steps:
(1) Adding 12 parts by weight of polyethylene glycol ether polymer with molecular weight of 2000 into a stirring container, heating to 110 ℃, then dehydrating in vacuum for 1h, cooling to 40 ℃, adding 20 parts by weight of 4, 4' -diphenylmethane diisocyanate, reacting for 2 h at 80 ℃, and preserving heat for 3h at 50 ℃ to obtain polyurethane prepolymer;
(2) Adding 5 parts by weight of asbestos, 2 parts by weight of nano silicon dioxide, 7 parts by weight of regenerated rubber powder, 15 parts by weight of SBS, 2 parts by weight of coumarone resin, 0.01 part by weight of maleic anhydride, 0.3 part by weight of 1010 antioxidant, 3 parts by weight of bentonite and 100 parts by weight of 90 # asphalt material into a mixer, uniformly mixing, then feeding into a double-screw extruder, melting and mixing at 130-140 ℃, extruding through a T-shaped die opening, and rolling by three rollers, wherein the temperature of the three rollers is controlled at 50-60 ℃, so as to obtain a modified asphalt layer with the thickness of 2.0 mm;
(3) The rolled modified asphalt layer in the step (2) is coated on the modified asphalt layer in a scraping way with the thickness of 0.3mm, then a PET film of an isolation protective film is coated, and the self-adhesive modified asphalt building waterproof coiled material is obtained through flattening, coiling, sealing and packaging of the roller.
The construction method comprises the following steps:
(1) Cleaning sundries, floating dust and water stains on a construction base surface;
(2) Uniformly dispersing 25 parts by weight of D-2000 end amino polyether and 15 parts by weight of diethyl toluenediamine, and spraying and wetting on a building base surface;
(3) And (3) removing the isolation protective film of the self-adhesive modified asphalt building waterproof coiled material, rapidly adhering the isolation protective film to a base surface, compacting and flattening the isolation protective film, and finishing paving.
Comparative example 1
The preparation method of the self-adhesive modified asphalt building waterproof coiled material comprises the following steps:
(1) Grinding 30 parts by weight of No. 130 asphalt, 10 parts by weight of styrene-butadiene rubber, 10 parts by weight of rosin resin and 20 parts by weight of aromatic oil into jelly;
(2) Adding 5 parts by weight of asbestos, 1 part by weight of nano silicon dioxide, 5 parts by weight of regenerated rubber powder, 15 parts by weight of SBS, 2 parts by weight of coumarone resin, 0.01 part by weight of maleic anhydride, 0.1 part by weight of 1010 antioxidant, 3 parts by weight of bentonite and 100 parts by weight of 90 # asphalt material into a mixer, uniformly mixing, then feeding into a double-screw extruder, melting and mixing at 130-140 ℃, extruding through a T-shaped die opening, and rolling by three rollers, wherein the temperature of the three rollers is controlled at 50-60 ℃, so as to obtain a modified asphalt layer with the thickness of 2.0 mm;
(3) The rolled modified asphalt layer in the step (2) is coated on the modified asphalt layer in a scraping way with the thickness of 0.5mm, then a PET film is coated, a roller is leveled, and the rolled modified asphalt layer is coiled, sealed and packaged, so that the self-adhesive modified asphalt building waterproof coiled material is obtained.
Adhesive peel strength test:
The waterproof rolls obtained in examples 1 to 3 and comparative examples 1 to 2 were tested for adhesiveness with reference to the requirements of GB/T23260-2009 (waterproof roll with self-adhesive layer).
The waterproof rolls of examples 1 to 3 and comparative example 1 were cut into test pieces of 50X 75mm, the test pieces were prepared according to GB/T328.20-2007, the rolls were stuck to a smooth aluminum plate cleaned with a solvent, then rolled 3 times with a weight of 2kg and a width of 50mm, and left stand for 24 hours, and peel strength was measured, and the test results are shown in Table 1.
The waterproof rolls of examples 1 to 3 and comparative example 1 were cut into test pieces of 50X 75mm, the test pieces were prepared according to GB/T328.20-2007, the rolls were stuck on a smooth aluminum plate cleaned with a solvent, then rolled 3 times with a weight of 2kg and a width of 50mm, left stand for 24 hours, immersed in water at 23℃for 7 days, then taken out, left stand for 24 hours, and peel strength was measured, and the test results are shown in Table 1.
The waterproof rolls of examples 1 to 3 and comparative example 1 were cut into test pieces of 50X 75mm, water was wiped on a smooth aluminum plate, the rolls were stuck, then rolled 3 times with a weight of 2kg and a width of 50mm, left standing for 24 hours, and peel strength was measured, and the test results are shown in Table 1.
The waterproof rolls of examples 1 to 3 and comparative example 1 were cut into test pieces of 50X 75mm, a dispersion of a combination of amine-terminated polyether and diethyltoluenediamine was sprayed on a smooth aluminum plate after wiping water, the rolls were stuck, and then rolled 3 times with a weight of 2kg and a width of 50mm, and left stand for 24 hours, and peel strength was measured, and the test results are shown in Table 1.
Table 1:
Through the test, the self-adhesive modified asphalt building waterproof coiled material has obviously improved adhesive property when the aluminum plate is used for wiping water and spraying dispersion liquid. In general, the adhesive performance of the invention is similar to that of the comparative example 1 without the pre-polymerized polyurethane adhesive layer, but in a wet environment, the sprayed dispersion liquid not only rapidly leads the polyurethane pre-polymer to form the polyurea to be adhered on a basal plane, but also obviously improves the adhesive strength without being influenced by the wet environment. Comparative example 1 did not have a pre-planted polyurethane prepolymer and the decrease in adhesion was significant in a humid environment. It is difficult to meet the standard requirements (greater than 1.5N/mm).
It should be understood that the exemplary embodiments described herein are to be considered as illustrative and not restrictive. Moreover, descriptions of features or aspects in various embodiments should be applicable to other similar features or aspects in other embodiments.

Claims (9)

1. The self-adhesive modified asphalt building waterproof coiled material is characterized by comprising a modified asphalt layer, an adhesive layer and an isolation protective film coated on the adhesive layer, wherein:
the modified asphalt layer is prepared by the following method:
Adding 3-5 parts by weight of asbestos, 1-3 parts by weight of nano silicon dioxide, 5-10 parts by weight of regenerated rubber powder, 10-15 parts by weight of SBS, 1-2 parts by weight of coumarone resin, 0.01-0.03 part by weight of maleic anhydride, 0.1-0.3 part by weight of antioxidant, 3-5 parts by weight of bentonite and 80-100 parts by weight of No. 90 asphalt material into a mixer, uniformly mixing, then feeding into a double-screw extruder for melt mixing, extruding through a T-shaped die opening, and rolling by three rollers to obtain a modified asphalt layer with the thickness of 1.0-2.0 mm;
The bonding layer is prepared by the following method:
Adding 10-15 parts by weight of polyether polyol into a stirring container, heating to 110 ℃, then dehydrating in vacuum for 1h, cooling to 40-50 ℃, adding 15-20 parts by weight of polyisocyanate, reacting at 80 ℃ for 1-2 h, and preserving heat at 50 ℃ for 1-3h to obtain polyurethane prepolymer, inputting the polyurethane prepolymer into a colloid grinder, and then adding 30-40 parts by weight of 130 # asphalt, 10-15 parts by weight of styrene-butadiene rubber, 5-10 parts by weight of rosin resin and 15-20 parts by weight of aromatic oil into the mixture to grind the mixture into a colloid to serve as an adhesive layer;
The isolation protective film is one of a PET film, a PVC film and a PP film.
2. The self-adhesive modified asphalt building waterproof coiled material according to claim 1, wherein the antioxidant is one or a compound of two of antioxidant 1010 and antioxidant 168.
3. The self-adhesive modified asphalt building waterproof coiled material according to claim 1, wherein the reclaimed rubber powder is reclaimed rubber prepared by grinding waste tires with the granularity of less than 100 meshes.
4. A method for preparing the self-adhesive modified asphalt building waterproof coiled material according to any one of claims 1 to 3, which is characterized by comprising the following specific preparation method:
(1) Adding 10-15 parts by weight of polyether polyol into a stirring container, heating to 110 ℃, then dehydrating in vacuum for 1h, cooling to 40-50 ℃, adding 15-20 parts by weight of polyisocyanate, reacting at 80 ℃ for 1-2 h, and preserving heat at 50 ℃ for 1-3h to obtain polyurethane prepolymer;
(2) Adding 3-5 parts by weight of asbestos, 1-3 parts by weight of nano silicon dioxide, 5-10 parts by weight of regenerated rubber powder, 10-15 parts by weight of SBS, 1-2 parts by weight of coumarone resin, 0.01-0.03 part by weight of maleic anhydride, 0.1-0.3 part by weight of antioxidant, 3-5 parts by weight of bentonite and 80-100 parts by weight of No. 90 asphalt material into a mixer, uniformly mixing, then feeding into a double-screw extruder for melt mixing, extruding through a T-shaped die opening, and rolling by three rollers to obtain a modified asphalt layer with the thickness of 1.0-2.0 mm;
(3) And (3) spreading the jelly obtained in the step (1) on the modified asphalt layer while the rolled modified asphalt layer is hot, then spreading an isolation protective film, flattening by a roller, coiling, sealing and packaging to obtain the self-adhesive modified asphalt building waterproof coiled material.
5. The preparation method of the self-adhesive modified asphalt building waterproof coiled material according to claim 4, wherein the melting and mixing temperature of the double-screw extruder is set at 130-140 ℃, and the temperature of the three rollers is controlled at 50-60 ℃.
6. The method for preparing the self-adhesive modified asphalt building waterproof coiled material according to claim 4, wherein the jelly is coated on the modified asphalt layer in a scraping manner, and the thickness of the scraping is 0.3-0.5mm.
7. A construction method of the self-adhesive modified asphalt building waterproof coiled material according to claim 1, which is characterized by comprising the following steps:
(1) Cleaning sundries, floating dust and water stains on a construction base surface;
(2) Uniformly dispersing 20-30 parts by weight of amine-terminated polyether and 10-15 parts by weight of liquid amine, and spraying and wetting on a building base surface;
(3) And (3) removing the isolation protective film of the self-adhesive modified asphalt building waterproof coiled material, rapidly adhering the isolation protective film to a base surface, compacting and flattening the isolation protective film, and finishing paving.
8. The construction method of self-adhesive modified asphalt building waterproof coiled material according to claim 7, wherein the amino-terminated polyether is D-2000 amino-terminated polyether.
9. The construction method of self-adhesive modified asphalt building waterproof coiled material according to claim 7, wherein the liquid amine is one of diethyl toluenediamine, dimethyl thiotoluenediamine and N, N' -dialkyl methyl diphenylamine.
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