CN111777964A - Self-adhesive modified asphalt building waterproof coiled material, preparation method and construction method - Google Patents

Self-adhesive modified asphalt building waterproof coiled material, preparation method and construction method Download PDF

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CN111777964A
CN111777964A CN202010676287.5A CN202010676287A CN111777964A CN 111777964 A CN111777964 A CN 111777964A CN 202010676287 A CN202010676287 A CN 202010676287A CN 111777964 A CN111777964 A CN 111777964A
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modified asphalt
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梁泽伟
张强
莫刚
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Sichuan Jinshengrui Technology Development Co ltd
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    • 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
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    • 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
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    • 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
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
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    • 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
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Abstract

The invention belongs to the field of building waterproof materials, and discloses a self-adhesive modified asphalt building waterproof coiled material, a preparation method and a construction method; self-adhesive modified asphalt building waterproof coiled material: comprises a modified asphalt layer, an adhesive layer and an isolation protective film applied on the adhesive layer; the bonding layer is implanted with the polyurethane prepolymer in advance in the butyl rubber self-bonding layer, and the polyurethane prepolymer is sprayed with a layer of dispersion liquid of end amino polyether and liquid amine in advance on the building base surface during construction, so that the polyurethane prepolymer is rapidly bonded with the end amino polyether and the liquid amine chain extension of the building base surface to form a polyurea layer while the butyl rubber is bonded, the polyurea is extremely strong in hydrophobicity and insensitive to environmental humidity, and the waterproof coiled material can be normally constructed under extremely severe environmental conditions, so that the waterproof coiled material is effectively bonded on the building base surface and is not influenced by 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, particularly relates to a waterproof coiled material for building engineering, and particularly relates to a self-adhesive modified asphalt building waterproof coiled material, and a preparation method and a construction method thereof.
Background
The building waterproof is an important construction part of the current building engineering, and the waterproof effect of the building waterproof material makes a great breakthrough in the aspects of waterproof performance, construction convenience and the like along with the development of a novel material technology. Such as rigid mortar waterproofing agents, cement-based (rigid) waterproofing paints, osmotically crystalline waterproofing paints; the flexible polymer waterproof coating and the waterproof roll are applied to the aspect of building waterproof engineering on a large scale.
The waterproof coiled material is used as a material which can be constructed in a large area and has high efficiency and water resistance, and is used in fields with high waterproof requirements such as building basements, tunnels and the like in large quantity. Particularly, the waterproof roll has flexibility which can effectively prevent cracks caused by underground deformation and the like, which are difficult to achieve by other rigid waterproof materials. The commonly used waterproof coiled materials at present mainly comprise a modified asphalt waterproof coiled material, a polyethylene polypropylene waterproof coiled material, a PVC waterproof coiled material, an ethylene propylene diene monomer waterproof coiled material and the like. According to the use practice, the modified asphalt waterproof coiled material becomes the first choice in the waterproof construction of large underground engineering, tunnels and other buildings. The main reason is that the asphalt waterproof coiled material is superior to other coiled materials in self-healing and can adapt to waterproofing of underground settlement deformation and the like. Self-repairing can be realized by the self-flowing of the asphalt after the occurrence of the damaged microcracks.
The firm combination of the asphalt coiled material and the building base surface directly determines the waterproof effect and the waterproof durability. After the coiled material is tightly attached and bonded with the building base surface, even if the building base surface cracks, the asphalt waterproof coiled material can deform slightly and compact to repair the cracks; if the adhesive is not firm, the coiled material can be separated from the building base surface to form hollows, and water leakage and seepage are easy to occur. The biggest obstacle of the waterproof roll in the use process is the problem of adhesion between the waterproof roll and a base surface. The traditional asphalt waterproof coiled material construction is mainly to heat the coiled material by a thermal spray gun so that the surface is hot-melted and then is bonded with a building base layer. The construction by the hot melting method has low cost, but easily causes damage to the coiled material, so that the surface is aged; and the adhesive is bonded with the building base surface at one time, once the adhesive is not tightly contacted, hollowing is caused, the repair is difficult, and water is easy to flow at the hollowing position.
The cold bonding method is the main development direction of the asphalt waterproof coiled material at present. The coiled material self-adhesion is realized by arranging the adhesive layer on the surface of the coiled material. At present, self-adhesive modified asphalt-based waterproof coiled materials are gradually popularized and used in the market. On one hand, the self-adhesive modified asphalt-based waterproof coiled material is simple and convenient to construct; on the other hand, the building floor is bonded compactly without forming hollowing; even the formation of empty drums can be remedied by post-inspection.
However, the adhesive layer of the self-adhesive modified asphalt waterproof roll for building is mainly formed by adhesives of butyl rubber, terpene resin, hydrogenated rosin, naphthenic oil and the like. The adhesion force mainly depends on Van der Waals force between the adhesive layer and the concrete surface or secondary bonds such as hydrogen bonds and the like, is a physical acting force, and decreases along with the increase of time, so that the problems of swelling and water channeling are finally generated; moreover, the self-adhesive asphalt waterproof coiled material has strict construction requirements on a waterproof base surface, and must be constructed on a completely flat, smooth and anhydrous base surface, otherwise, the self-adhesive asphalt waterproof coiled material has the conditions of layering, bulging and water channeling. Most construction environments have difficulty meeting these requirements. In particular, most of the applied surface contains water, which causes a decrease in the bonding strength.
Disclosure of Invention
Aiming at the problems that the bonding firmness of the conventional self-adhesive modified asphalt building waterproof coiled material and a building base surface is poor and the requirement on the water content of the building base surface during bonding construction is severe; in order to improve the adhesion and construction adaptability of the self-adhesive modified asphalt building waterproof coiled material, the invention provides the self-adhesive modified asphalt building waterproof coiled material; further provides a preparation method and a construction method of the self-adhesive modified asphalt building waterproof coiled material.
First, the first purpose of the invention is a self-adhesive modified asphalt waterproof building roll, which is characterized in that: comprises a modified asphalt layer, an adhesive layer and an isolation protective film applied 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 for uniform mixing, then feeding into a double-screw extruder for melt mixing, extruding through a T-shaped die and performing three-roll calendering 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 carrying out vacuum dehydration for 1h, cooling to 40-50 ℃, adding 15-20 parts by weight of polyisocyanate, reacting for 1-2 h at 80 ℃, and carrying out heat preservation for 1-3h at 50 ℃ to obtain a polyurethane prepolymer; inputting the polyurethane prepolymer into a colloid grinder, and then adding 30-40 parts by weight of No. 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 to grind into jelly serving 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 both of antioxidant 1010 and antioxidant 168.
Preferably, the reclaimed rubber powder is reclaimed rubber prepared by grinding waste tires with the granularity of less than 100 meshes, and mainly reduces the cost and increases the toughness of the coiled material.
Preferably, the nano-silica can increase the compactness of the coiled material on one hand, and the addition of the nano-silica is beneficial to the combination with concrete.
The second purpose of the invention is a preparation method of the self-adhesive modified asphalt waterproof building coil, which is characterized by comprising the following steps:
(1) adding 10-15 parts by weight of polyether polyol into a stirring container, heating to 110 ℃, then carrying out vacuum dehydration for 1h, cooling to 40-50 ℃, adding 15-20 parts by weight of polyisocyanate, reacting for 1-2 h at 80 ℃, and carrying out heat preservation for 1-3h at 50 ℃ to obtain a polyurethane prepolymer; inputting the polyurethane prepolymer into a colloid grinder, and then adding 30-40 parts by weight of No. 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 to grind into jelly;
(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 for uniform mixing, then feeding into a double-screw extruder for melt mixing, extruding through a T-shaped die and performing three-roll calendering to obtain a modified asphalt layer with the thickness of 1.0-2.0 mm;
(3) coating the jelly obtained in the step (1) on the modified asphalt layer while the calendered modified asphalt layer is hot; then an isolation protective film is coated, a roller is leveled, and the self-adhesive modified asphalt building waterproof coiled material is obtained by coiling, sealing and packaging.
Preferably, the melting and mixing temperature of the double-screw extruder is set at 130-140 ℃; the temperature of the three rollers is controlled to be 50-60 ℃, and roller sticking can be caused by overhigh temperature; too low a temperature can affect the adhesion of subsequent gums.
Further preferably, the jelly is coated on the modified asphalt layer by a doctor blade, and the thickness of the doctor blade is 0.3-0.5 mm.
The third purpose of the invention is a construction method of the self-adhesive modified asphalt building waterproof coiled material, which is characterized in that the concrete 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 on a building base surface for wetting;
(3) and removing the isolation protective film of the self-adhesive modified asphalt building waterproof coiled material, quickly sticking the film on a base surface, compacting and leveling, and finishing paving.
Preferably, the amino-terminated polyether is D-2000 amino-terminated polyether produced by BASF, and the D-2000 amino-terminated polyether is an active chain extender for polyurethane, so that the polyurethane prepolymer can be quickly chain-extended.
Preferably, the liquid amine is one of diethyltoluenediamine, dimethylthiotoluenediamine and N, N' -dialkyl methyldiphenylamine.
Unlike 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, polyurethane prepolymer is implanted into a butyl rubber self-adhesive layer in advance, and during construction, 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 is rapidly extended with the amino-terminated polyether and the liquid amine of the building base surface to form a polyurea layer while the butyl rubber is bonded, the polyurea has strong hydrophobicity and is insensitive to environmental humidity, even a film can be formed on water, and the construction can be normally carried out under extremely severe environmental conditions, so that the coiled material is effectively bonded on the building base surface without the influence of water contained in the base surface. The self-adhesive modified asphalt waterproof coiled material for buildings, which is obtained by the invention, has wide adaptability, is particularly suitable for construction in humid environments, and is suitable for waterproof construction of underground waterproof engineering and waterproof construction with complex environments, such as basements, artificial lakes, culverts, tunnels, subways and the like.
Compared with the self-adhesive waterproof coiled material, the self-adhesive modified asphalt waterproof coiled material for the building has the prominent technical advantages that:
(1) according to the invention, the polyurethane prepolymer is pre-planted in the self-adhesive layer, and a layer of amino-terminated polyether and liquid amine dispersion liquid is sprayed on the building base surface during construction, so that the polyurethane prepolymer can quickly form polyurea to be adhered to the base surface, the adaptability of the polyurethane prepolymer in a humid environment is strong, and the adhesion cannot be influenced by environmental humidity.
(2) The self-adhesive modified asphalt waterproof coiled material for the building has wide adaptability, is particularly suitable for construction in a humid environment, and is suitable for waterproof construction of underground waterproof engineering and complicated-environment waterproof construction of basements, artificial lakes, culverts, tunnels, subways and the like. After being paved, the water-proof coating can not swell and flee due to the humid environment and the like, thereby effectively preventing the water from permeating and not fleeing even if the water permeates.
(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 forward harsh requirements on the building base surface any more, and the construction progress is greatly improved.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of a self-adhesive modified asphalt waterproof roll for construction. 1: modifying the asphalt layer; 2: an adhesive layer; 3: isolating the protective film.
Detailed Description
The following examples are intended to further illustrate the present invention, but not to limit the scope of the claims of the present invention.
Example 1
A preparation method of a self-adhesive modified asphalt building waterproof coiled material comprises the following steps:
(1) adding 15 parts by weight of polyethylene glycol ether polymer with the molecular weight of 3000 into a stirring container, heating to 110 ℃, then carrying out vacuum dehydration for 1h, cooling to 40 ℃, adding 20 parts by weight of 4, 4' -diphenylmethane diisocyanate, reacting for 2 h at 80 ℃, and keeping the temperature for 1h at 50 ℃ to obtain a polyurethane prepolymer; inputting the polyurethane prepolymer into a colloid grinder, and then adding 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 to grind into a 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 No. 90 asphalt material into a mixer, uniformly mixing, then sending into a double-screw extruder, melting and mixing at 130-140 ℃, extruding through a T-shaped die orifice, and carrying out three-roll calendering, wherein the three-roll temperature is controlled at 50-60 ℃, so as to obtain a modified asphalt layer with the thickness of 2.0 mm;
(3) coating the jelly obtained in the step (1) on the modified asphalt layer with the coating thickness of 0.5mm while the calendered modified asphalt layer in the step (2) is hot; and then coating a PET film, flattening the PET film by a roller, coiling the PET film, and sealing and packaging the PET film to obtain the self-adhesive modified asphalt building waterproof coiled material.
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 amino-terminated polyether and 15 parts by weight of diethyltoluenediamine, and spraying on a building base surface for wetting;
(3) and removing the isolation protective film of the self-adhesive modified asphalt building waterproof coiled material, quickly sticking the film on a base surface, compacting and leveling, and finishing paving.
Example 2
A preparation method of a self-adhesive modified asphalt building waterproof coiled material comprises the following steps:
(1) adding 10 parts by weight of polypropylene glycol ether with molecular weight of 2000 into a stirring container, heating to 110 ℃, then dehydrating in vacuum for 1h, cooling to 50 ℃, adding 15 parts by weight of 4, 4' -diphenylmethane diisocyanate, reacting for 1h at 80 ℃, and preserving heat for 1h at 50 ℃ to obtain a polyurethane prepolymer; inputting the polyurethane prepolymer into a colloid grinder, and then adding 40 parts by weight of No. 130 asphalt, 15 parts by weight of styrene butadiene rubber, 5 parts by weight of rosin resin and 15 parts by weight of aromatic oil to grind into a jelly;
(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 No. 90 asphalt material into a mixer, uniformly mixing, then sending into a double-screw extruder, melting and mixing at 130-140 ℃, extruding through a T-shaped die orifice, and carrying out three-roll calendering, wherein the three-roll temperature is controlled at 50-60 ℃, so as to obtain a modified asphalt layer with the thickness of 2.0 mm;
(3) coating the jelly obtained in the step (1) on the modified asphalt layer with the coating thickness of 0.4mm while the calendered modified asphalt layer in the step (2) is hot; and then applying a PET film of an isolation protective film, flattening the PET film by using a roller, coiling the PET film, and sealing and packaging the PET film to obtain the self-adhesive modified asphalt building waterproof coiled material.
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 amino-terminated polyether and 15 parts by weight of N, N' -dialkyl methyldiphenylamine, and spraying on a building base surface for wetting;
(3) and removing the isolation protective film of the self-adhesive modified asphalt building waterproof coiled material, quickly sticking the film on a base surface, compacting and leveling, and finishing paving.
Example 3
A preparation method of a self-adhesive modified asphalt building waterproof coiled material comprises the following steps:
(1) adding 12 parts by weight of 2000-molecular-weight polyethylene glycol ether polymer into a stirring container, heating to 110 ℃, then carrying out vacuum dehydration for 1h, cooling to 40 ℃, adding 20 parts by weight of 4, 4' -diphenylmethane diisocyanate, reacting for 2 h at 80 ℃, and keeping the temperature for 3h at 50 ℃ to obtain a polyurethane prepolymer; inputting the polyurethane prepolymer into a colloid grinder, and then adding 40 parts by weight of No. 130 asphalt, 10 parts by weight of styrene butadiene rubber, 8 parts by weight of rosin resin and 18 parts by weight of aromatic oil to grind into a jelly;
(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 No. 90 asphalt material into a mixer, uniformly mixing, then sending into a double-screw extruder, melting and mixing at 130-140 ℃, extruding through a T-shaped die orifice, and carrying out three-roll calendering, wherein the three-roll temperature is controlled at 50-60 ℃, so as to obtain a modified asphalt layer with the thickness of 2.0 mm;
(3) coating the jelly obtained in the step (1) on the modified asphalt layer with the coating thickness of 0.3mm while the calendered modified asphalt layer in the step (2) is hot; and then applying a PET film of an isolation protective film, flattening the PET film by using a roller, coiling the PET film, and sealing and packaging the PET film to obtain the self-adhesive modified asphalt building waterproof coiled material.
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 amino-terminated polyether and 15 parts by weight of diethyltoluenediamine, and spraying on a building base surface for wetting;
(3) and removing the isolation protective film of the self-adhesive modified asphalt building waterproof coiled material, quickly sticking the film on a base surface, compacting and leveling, and finishing paving.
Comparative example 1
A preparation method of a 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 a 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 No. 90 asphalt material into a mixer, uniformly mixing, then sending into a double-screw extruder, melting and mixing at 130-140 ℃, extruding through a T-shaped die orifice, and carrying out three-roll calendering, wherein the three-roll temperature is controlled at 50-60 ℃, so as to obtain a modified asphalt layer with the thickness of 2.0 mm;
(3) coating the jelly obtained in the step (1) on the modified asphalt layer with the coating thickness of 0.5mm while the calendered modified asphalt layer in the step (2) is hot; and then coating a PET film, flattening the PET film by a roller, coiling the PET film, and sealing and packaging the PET film to obtain the self-adhesive modified asphalt building waterproof coiled material.
Testing adhesive peel strength:
the adhesion of the waterproofing membranes obtained in examples 1 to 3 and comparative examples 1 to 2 was tested with reference to the requirements of GB/T23260-2009 (waterproofing membranes with self-adhesive layer).
The water-repellent coil materials of examples 1 to 3 and comparative example 1 were cut into 50X 75mm test specimens, and the samples were prepared in accordance with GB/T328.20-2007 by adhering the coil materials to solvent-cleaned smooth aluminum plates, followed by rolling 3 times with a weight of 2kg and a width of 50mm, standing for 24 hours, and measuring the peel strength, 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 specimens of 50 × 75mm, and the test specimens were prepared according to GB/T328.20-2007 by adhering the rolls to a solvent-cleaned smooth aluminum plate, rolling 3 times with a weight of 2kg and a width of 50mm, standing for 24 hours, soaking in water at 23 ℃ for 7 days, taking out, standing for 24 hours, and measuring the peel strength, the test results being shown in table 1.
The waterproof rolls of examples 1 to 3 and comparative example 1 were cut into 50X 75mm test specimens, water-blotted on a smooth aluminum plate, the rolls were pasted, rolled 3 times with a width of 50mm and a weight of 2kg, left to stand for 24 hours, and the peel strength was measured, and the test results are shown in Table 1.
The water-repellent coil materials of examples 1 to 3 and comparative example 1 were cut into 50X 75mm test specimens, a dispersion of a combination of terminal amino polyether and diethyltoluenediamine was sprayed after wiping water on a smooth aluminum plate, the coil materials were pasted and then rolled 3 times with a 2kg weight and a width of 50mm, and left to stand for 24 hours, and the peel strength was measured, and the test results are shown in Table 1.
Table 1:
Figure 13867DEST_PATH_IMAGE002
through the test, the bonding performance of the self-adhesive modified asphalt building waterproof coiled material obtained by the invention on an aluminum plate which is wiped with water and sprayed with the dispersion liquid is obviously improved. Under general conditions, the bonding performance of the invention is similar to that of comparative example 1 without adding the pre-polymerized polyurethane bonding layer; in a wet environment, the sprayed dispersion liquid not only enables the polyurethane prepolymer to form polyurea to be adhered to a base surface quickly and is not influenced by the wet environment, but also obviously improves the adhesion strength. Comparative example 1 had no pre-planted polyurethane prepolymer and the adhesion in a humid environment was significantly reduced. It is difficult to meet the standard requirements (more than 1.5N/mm).
It is to 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 waterproof building roll is characterized in that: comprises a modified asphalt layer, an adhesive layer and an isolation protective film applied 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 for uniform mixing, then feeding into a double-screw extruder for melt mixing, extruding through a T-shaped die and performing three-roll calendering 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 carrying out vacuum dehydration for 1h, cooling to 40-50 ℃, adding 15-20 parts by weight of polyisocyanate, reacting for 1-2 h at 80 ℃, and carrying out heat preservation for 1-3h at 50 ℃ to obtain a polyurethane prepolymer; inputting the polyurethane prepolymer into a colloid grinder, and then adding 30-40 parts by weight of No. 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 to grind into jelly serving 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 waterproof building roll material as claimed in claim 1, wherein: the antioxidant is selected from one or a compound of antioxidant 1010 and antioxidant 168.
3. The self-adhesive modified asphalt waterproof building roll material as claimed in 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 waterproof building coil material as claimed in any one of claims 1 to 3, which is characterized in that: the preparation method comprises the following steps:
(1) adding 10-15 parts by weight of polyether polyol into a stirring container, heating to 110 ℃, then carrying out vacuum dehydration for 1h, cooling to 40-50 ℃, adding 15-20 parts by weight of polyisocyanate, reacting for 1-2 h at 80 ℃, and carrying out heat preservation for 1-3h at 50 ℃ to obtain a polyurethane prepolymer; inputting the polyurethane prepolymer into a colloid grinder, and then adding 30-40 parts by weight of No. 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 to grind into jelly;
(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 for uniform mixing, then feeding into a double-screw extruder for melt mixing, extruding through a T-shaped die and performing three-roll calendering to obtain a modified asphalt layer with the thickness of 1.0-2.0 mm;
(3) coating the jelly obtained in the step (1) on the modified asphalt layer while the calendered modified asphalt layer is hot; then an isolation protective film is coated, a roller is leveled, and the self-adhesive modified asphalt building waterproof coiled material is obtained by coiling, sealing and packaging.
5. The preparation method of the self-adhesive modified asphalt waterproof building coil material according to claim 4, which is characterized by comprising the following steps: the melting and mixing temperature of the double-screw extruder is set at 130-140 ℃; the temperature of the three rollers is controlled between 50 and 60 ℃.
6. The preparation method of the self-adhesive modified asphalt waterproof building coil material according to claim 4, which is characterized by comprising the following steps: the jelly is coated on the modified asphalt layer by blade coating, and the blade coating thickness is 0.3-0.5 mm.
7. The construction method of the self-adhesive modified asphalt waterproof building coil material as claimed in claim 1, which is characterized in that the concrete 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 on a building base surface for wetting;
(3) and removing the isolation protective film of the self-adhesive modified asphalt building waterproof coiled material, quickly sticking the film on a base surface, compacting and leveling, and finishing paving.
8. The construction method of the self-adhesive modified asphalt waterproof roll for building according to claim 7, characterized in that: the amino-terminated polyether is D-2000 amino-terminated polyether.
9. The construction method of the self-adhesive modified asphalt waterproof roll for building according to claim 7, characterized in that: the liquid amine is one of diethyl toluene diamine, dimethyl sulfur toluene diamine and N, N' -dialkyl methyl diphenylamine.
CN202010676287.5A 2020-07-14 2020-07-14 Self-adhesive modified asphalt building waterproof coiled material, preparation method and construction method Pending CN111777964A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112480798A (en) * 2020-12-19 2021-03-12 四川锦盛瑞科技发展有限公司 Polyurea waterproof engineering coating, preparation method and use method
CN114016623A (en) * 2021-11-18 2022-02-08 潍坊市宇虹防水材料(集团)有限公司 Anti-corrosion self-adhesive polymer modified asphalt waterproof coiled material and preparation method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112480798A (en) * 2020-12-19 2021-03-12 四川锦盛瑞科技发展有限公司 Polyurea waterproof engineering coating, preparation method and use method
CN112480798B (en) * 2020-12-19 2024-04-09 天成防水材料股份有限公司 Polyurea waterproof engineering paint and preparation method and application method thereof
CN114016623A (en) * 2021-11-18 2022-02-08 潍坊市宇虹防水材料(集团)有限公司 Anti-corrosion self-adhesive polymer modified asphalt waterproof coiled material and preparation method thereof
CN114016623B (en) * 2021-11-18 2022-04-26 潍坊市宇虹防水材料(集团)有限公司 Anti-corrosion self-adhesive polymer modified asphalt waterproof coiled material and preparation method thereof

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