CN112143388A - Composite waterproof coating film prefabricated coiled material and preparation method thereof - Google Patents

Composite waterproof coating film prefabricated coiled material and preparation method thereof Download PDF

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CN112143388A
CN112143388A CN202011023563.4A CN202011023563A CN112143388A CN 112143388 A CN112143388 A CN 112143388A CN 202011023563 A CN202011023563 A CN 202011023563A CN 112143388 A CN112143388 A CN 112143388A
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polyethylene
parts
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waterproof coating
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刘金宝
杨伟华
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Huamei Water Proofing Co ltd
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Huamei Water Proofing 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
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/21—Paper; Textile fabrics
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    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
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    • C09J195/00—Adhesives based on bituminous materials, e.g. asphalt, tar, pitch
    • C09J195/005—Aqueous compositions, e.g. emulsions
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    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N5/00—Roofing materials comprising a fibrous web coated with bitumen or another polymer, e.g. pitch
    • D06N5/003—Roofing materials comprising a fibrous web coated with bitumen or another polymer, e.g. pitch coated with bitumen
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    • D06N5/00—Roofing materials comprising a fibrous web coated with bitumen or another polymer, e.g. pitch
    • D06N5/003—Roofing materials comprising a fibrous web coated with bitumen or another polymer, e.g. pitch coated with bitumen
    • D06N5/006—Roofing materials comprising a fibrous web coated with bitumen or another polymer, e.g. pitch coated with bitumen characterised by the means to apply it to a support or to another roofing membrane, e.g. self-adhesive layer or strip
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/16—Halogen-containing compounds
    • C08K2003/162—Calcium, strontium or barium halides, e.g. calcium, strontium or barium chloride
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    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
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    • C08K2003/3063—Magnesium sulfate
    • 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
    • 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
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    • C09J2400/00—Presence of inorganic and organic materials
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    • C09J2400/26—Presence of textile or fabric
    • C09J2400/263—Presence of textile or fabric in the substrate
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    • C09J2495/00—Presence of bitume
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
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    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
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Abstract

The invention relates to a composite waterproof coating film prefabricated coiled material, which sequentially comprises the following components from top to bottom: the rubber-modified asphalt layer, the polyethylene-based tire fabric layer, the non-cured rubber asphalt layer and the isolation layer. The preparation method of the composite waterproof coating prefabricated coiled material comprises the following steps: 1) conveying the polyethylene base tire fabric layer through a conveying belt; 2) spraying rubber modified asphalt on the surface of polyethylene base fabric to form a rubber modified asphalt layer; 3) spraying non-cured rubber asphalt to the bottom surface of the polyethylene base fabric to form a non-cured rubber asphalt layer; 4) covering the non-cured rubber asphalt layer with the polyethylene isolating film to serve as an isolating layer; 5) and air-drying, rolling and packaging the coiled material to obtain the composite waterproof coating prefabricated coiled material. The prefabricated coiled material has good weather resistance, good bonding effect with a base layer, water channeling prevention and long service life; meanwhile, the production process only needs normal-temperature mechanized manufacturing, cold bonding construction is adopted in the construction, and the problem of environmental pollution is thoroughly solved in the production and construction processes.

Description

Composite waterproof coating film prefabricated coiled material and preparation method thereof
Technical Field
The invention relates to the field of waterproof coiled materials, in particular to a composite waterproof coating prefabricated coiled material and a preparation method thereof.
Background
The waterproof coiled material in the market at present mainly takes SBS modified asphalt waterproof coiled material as a main material, the SBS modified asphalt waterproof coiled material is prepared by modifying asphalt by styrene-butadiene (SBS), mixing talcum powder, base oil and other components, and adopting filament polyester base cloth to prepare the waterproof coiled material through the working procedures of cloth dipping, oil coating, film coating, cooling, rolling and the like. Wherein, modified asphalt needs to be heated to 160-. Meanwhile, because the modified asphalt coiled material and the base layer have general cohesiveness, the modified asphalt coiled material and the base layer are easy to crack after being used for a period of time, and the waterproof effect is gradually lost after the modified asphalt coiled material and the base layer bulge, and general roof waterproof needs to be renovated for 5 years.
With the development of the technology, a scheme of compounding the non-cured rubber asphalt waterproof coating and the self-adhesive polymer asphalt coiled material appears, the problem of bonding the coiled material with a base layer is solved to a certain extent, and the problems of environmental protection and short service life still exist.
Disclosure of Invention
Therefore, the invention provides the composite waterproof coating prefabricated coiled material with good weather resistance, long service life, simple preparation process and environmental protection and the preparation method thereof.
Being different from the prior art, above-mentioned technical scheme provides a compound waterproofing membrane prefabricated coiled material, and it includes from the top down: the rubber modified asphalt layer, the polyethylene base tire fabric layer, the non-cured rubber asphalt layer and the isolation layer.
In the composite waterproof coating prefabricated coiled material, the surface layer is a sprayed and quickly-solidified rubber modified asphalt layer, and has super-high weather resistance, elasticity and self-healing property, and the service life of the coiled material can be prolonged due to the super-high weather resistance and self-healing property because the surface layer is often exposed in the air in the use process; the middle tire fabric layer adopts polyethylene base tire fabric, and the tensile strength is good; the bottom layer is a water-based environment-friendly non-cured rubber asphalt layer, and has the advantages of adhesiveness, no curing, creep property and the like. When the composite waterproof coating film prefabricated coiled material is used, the isolating layer on the bottom surface needs to be torn off, and then the non-cured rubber asphalt layer is bonded with the base layer. Therefore, the prefabricated coiled material has good weather resistance, good bonding effect with the base layer, water channeling prevention and long service life.
Further, the rubber modified asphalt layer is prepared by spraying rubber modified asphalt on the surface of the polyethylene base tire cloth layer, and comprises a component A and a component B, wherein the component A comprises the following components in parts by weight:
15-45 parts of anionic neoprene latex;
5-15 parts of anionic styrene-butadiene latex;
55-85 parts of anionic emulsified asphalt;
the component B comprises the following components in parts by weight:
CaCl21-2 parts;
MgSO41-2 parts;
and 9 parts of water.
In the component A of the rubber modified asphalt layer, anionic neoprene latex, anionic styrene-butadiene latex and anionic emulsified asphalt are used as raw materials, and particles in the latex and the emulsified asphalt form a stable oil-in-water emulsion system under the action of an alkaline environment. Meanwhile, the component B contains CaCl2And MgSO4And a strong acid and weak base salt solution is formed in the water. The component A and the component B are respectively sprayed out by a nozzle of spraying equipment, the stable emulsion system of the component A is destroyed under the action of strong acid and weak base salt solution of the component B outside a spray gun, rubber particles in latex are coagulated and agglomerated into a film, water in the emulsion is separated out under the action of shrinkage and coagulation of rubber, and the whole processes of spraying, cross mixing, coagulation, separation and film forming are carried out in the following stepsThe spraying and quick-setting film forming effects can be realized within a very short time.
Further, the non-cured rubber asphalt layer is prepared by spraying non-cured rubber asphalt on the bottom surface of the polyethylene-based tire fabric layer, and comprises a component C and a component D, wherein the component C comprises the following components in parts by weight:
Figure BDA0002701449710000021
Figure BDA0002701449710000031
the component D comprises the following components in parts by weight:
CaCl21-2 parts;
MgSO41-2 parts;
and 9 parts of water.
The anionic emulsified base oil is a commercial product purchased from Guangzhou Wanhuai chemical Co., Ltd, and the product brand is 150 SN.
The bottom layer of the prefabricated coiled material adopts a non-cured rubber asphalt layer, the component C of the non-cured rubber asphalt layer comprises anionic neoprene latex, anionic styrene-butadiene latex, anionic emulsified asphalt and anionic emulsified base oil, and particles in the latex and the emulsified asphalt form a stable oil-in-water emulsion system under the alkaline environment and the action of an anionic emulsifier. Meanwhile, the component D contains CaCl2And MgSO4And a strong acid and weak base salt solution is formed in the water. And then the component C and the component D are respectively sprayed out through a nozzle of spraying equipment, a stable emulsion system is damaged under the action of a strong acid weak base salt solution of the component D outside a spray gun, rubber particles in latex are coagulated and agglomerated into a film, water in the emulsion is separated out under the action of shrinkage and coagulation of rubber, the whole processes of spraying, cross mixing, coagulation, separation and film forming are completed in a very short time, and the effect of spraying, quick-setting and film forming can be realized.
The anionic neoprene latex can improve the strength, aging resistance, heat resistance, and temperature stability of the rubber modified asphalt layer or the non-cured rubber asphalt layer. The anionic styrene-butadiene latex can improve the adhesive property of the rubber modified asphalt layer or the non-cured rubber asphalt layer, and the anionic emulsified asphalt can improve the viscosity, the self-healing property and the creep property of the rubber modified asphalt layer or the non-cured rubber asphalt layer.
Further, the polyethylene base tire fabric layer is a polyethylene film with the thickness of 0.3mm-0.7 mm. Compared with the prior art that polyester is used as the base, the polyethylene film is used as the base cloth, so that the tensile strength of the coiled material can be improved, and the waterproofness is improved.
Further, the isolation film layer is a polyethylene isolation film. When the composite waterproof coating film prefabricated coiled material is not used, the polyethylene isolating film on the bottom surface is used as a protective layer, and when the composite waterproof coating film prefabricated coiled material is used, the polyethylene isolating film can be torn off, so that the non-cured rubber asphalt layer is directly bonded with the base layer.
The invention also provides a preparation method of the composite waterproof coating prefabricated coiled material, which comprises the following steps:
1) conveying the polyethylene base tire fabric through a conveying belt to serve as a polyethylene base tire fabric layer;
2) spraying rubber modified asphalt on the surface of the polyethylene base tire cloth by adopting a reciprocating automatic spraying machine to form a rubber modified asphalt layer, wherein the flow of the spraying gun is 8-12kg/min, and the conveying speed of the polyethylene base tire cloth is 25-40 m/min;
3) spraying non-cured rubber asphalt to the bottom surface of the polyethylene base wadding by using a reciprocating automatic spraying machine to form a non-cured rubber asphalt layer; the flow rate of the spray gun is 8-12kg/min, and the conveying speed of the polyethylene base tire fabric is 25-40 m/min;
4) covering the polyethylene isolating film on the non-cured rubber asphalt layer on the bottom surface of the polyethylene base fabric to serve as an isolating layer;
5) and (4) air-drying, rolling and packaging the coiled material obtained in the step 4) to obtain the composite waterproof coating prefabricated coiled material.
The whole production process of the composite waterproof coating prefabricated coiled material only needs normal-temperature mechanized manufacturing, cold bonding construction is adopted in the construction, and the problem of environmental pollution is thoroughly solved in the production and construction processes. Meanwhile, the thickness of the rubber modified asphalt layer and the thickness of the non-cured rubber asphalt layer can be conveniently controlled by controlling the flow speed of the spray gun and the transmission speed of the polyethylene base tire cloth. The thickness of the rubber modified asphalt layer is generally controlled to be 1.5mm and 2.0mm, and the thickness of the non-cured rubber asphalt layer is controlled to be 1.5mm and 2.0 mm.
Further, in the step 2), the anionic neoprene latex, the anionic styrene-butadiene latex and the anionic emulsified asphalt in the component A of the rubber modified asphalt layer are uniformly mixed in advance to form an oil-in-water emulsion A; then adding CaCl in the component B2And MgSO4Dissolving in water to form strong acid and weak base salt solution A;
when the rubber modified asphalt layer is sprayed, the oil-in-water emulsion A and the strong acid weak base salt solution A are respectively sprayed to the surface of the polyethylene base tire fabric through two nozzles of a spray gun.
Further, in the step 3), the anionic neoprene latex, the anionic styrene-butadiene latex, the anionic emulsified asphalt and the anionic emulsified base oil in the component C of the non-cured rubber asphalt layer are uniformly mixed in advance to form an oil-in-water emulsion B; then adding CaCl in the component D2And MgSO4Dissolving in water to form strong acid and weak base salt solution B;
when the non-cured rubber asphalt layer is sprayed, the oil-in-water emulsion B and the strong acid and weak base salt solution B are respectively sprayed to the bottom surface of the polyethylene base tire fabric through two nozzles of a spray gun.
The invention has the beneficial effects that:
1. the prefabricated coiled material has good weather resistance, good bonding effect with a base layer, water channeling prevention and long service life.
2. The whole production process of the composite waterproof coating prefabricated coiled material only needs normal-temperature mechanized manufacturing, cold bonding construction is adopted in the construction, and the problem of environmental pollution is thoroughly solved in the production and construction processes. Meanwhile, the thickness of the rubber asphalt layer and the thickness of the non-cured rubber asphalt layer can be conveniently controlled by controlling the flow speed of the spray gun and the transmission speed of the polyethylene-based tire cloth.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a schematic sectional view of a prefabricated coil material with a composite waterproof coating film according to the present invention;
wherein, 1 is a rubber modified asphalt layer, 2 is a polyethylene base tire fabric layer, 3 is a non-cured rubber asphalt layer, and 4 is an isolation layer.
Detailed Description
In order to explain technical contents, structural features, and objects and effects of the technical means in detail, the following detailed description is given with reference to specific embodiments.
Premixing of components of rubber modified asphalt layer
Example 1
1. Firstly, weighing the component A according to the following parts by weight:
30 parts of anionic neoprene latex;
10 parts of anionic styrene-butadiene latex;
70 parts of anionic emulsified asphalt;
2. firstly, weighing the components B in parts by weight as follows:
CaCl21 part;
MgSO 42 parts of (1);
and 9 parts of water.
3. Uniformly mixing the anionic neoprene latex, the anionic styrene-butadiene latex and the anionic emulsified asphalt in the component A of the rubber modified asphalt layer 1 to form an oil-in-water emulsion A, and canning and storing; then adding CaCl in the component B2And MgSO4Dissolving in water to form strong acid and weak base salt solution A, and canning for storage.
Example 2
1. Firstly, weighing the component A according to the following parts by weight:
15 parts of anionic neoprene latex;
15 parts of anionic styrene-butadiene latex;
55 parts of anionic emulsified asphalt;
2. firstly, weighing the components B in parts by weight as follows:
CaCl21 part;
MgSO 42 parts of (1);
and 9 parts of water.
3. Uniformly mixing the anionic neoprene latex, the anionic styrene-butadiene latex and the anionic emulsified asphalt in the component A of the rubber modified asphalt layer 1 to form an oil-in-water emulsion A, and canning and storing; then adding CaCl in the component B2And MgSO4Dissolving in water to form strong acid and weak base salt solution A, and canning for storage.
Example 3
1. Firstly, weighing the component A according to the following parts by weight:
45 parts of anionic neoprene latex;
5 parts of anionic styrene-butadiene latex;
85 parts of anionic emulsified asphalt;
2. firstly, weighing the components B in parts by weight as follows:
CaCl 22 parts of (1);
MgSO41 part;
and 9 parts of water.
3. Uniformly mixing the anionic neoprene latex, the anionic styrene-butadiene latex and the anionic emulsified asphalt in the component A of the rubber modified asphalt layer 1 to form an oil-in-water emulsion A, and canning and storing; then adding CaCl in the component B2And MgSO4Dissolving in water to form strong acid and weak base salt solution A, and canning for storage.
Premixing of components of non-curing rubber asphalt layer
Example 4
1. Firstly, weighing the components C in parts by weight as follows:
Figure BDA0002701449710000061
Figure BDA0002701449710000071
2. firstly, weighing the components D in parts by weight as follows:
CaCl21 part;
MgSO 42 parts of (1);
and 9 parts of water.
3. Mixing the anionic neoprene latex, the anionic styrene-butadiene latex, the anionic emulsified asphalt and the anionic emulsified base oil in the component C of the non-cured rubber asphalt layer 3 uniformly to form an oil-in-water emulsion B, and canning and storing; then adding CaCl in the component D2And MgSO4Dissolving in water to form strong acid and weak base salt solution B, and canning for storage.
Example 5
1. Firstly, weighing the components C in parts by weight as follows:
Figure BDA0002701449710000072
2. firstly, weighing the components D in parts by weight as follows:
CaCl 22 parts of (1);
MgSO41 part;
and 9 parts of water.
3. Mixing the anionic neoprene latex, the anionic emulsified asphalt and the anionic emulsified base oil in the component C of the non-cured rubber asphalt layer 3 uniformly to form an oil-in-water emulsion B, and canning and storing; then adding CaCl in the component D2And MgSO4Dissolving in water to form strong acid and weak base salt solution B, and canning for storage.
Example 6
1. Firstly, weighing the components C in parts by weight as follows:
Figure BDA0002701449710000073
Figure BDA0002701449710000081
2. firstly, weighing the components D in parts by weight as follows:
CaCl 22 parts of (1);
MgSO41 part;
and 9 parts of water.
3. Mixing the anionic neoprene latex, the anionic styrene-butadiene latex, the anionic emulsified asphalt and the anionic emulsified base oil in the component C of the non-cured rubber asphalt layer 3 uniformly to form an oil-in-water emulsion B, and canning and storing; then adding CaCl in the component D2And MgSO4Dissolving in water to form strong acid and weak base salt solution B, and canning for storage.
Preparation of composite waterproof coating film prefabricated coiled material
Example 7
The preparation method of the composite waterproof coating prefabricated coiled material comprises the following steps:
1) conveying the polyethylene base tire fabric as a polyethylene base tire fabric layer 2 through a conveying belt;
2) spraying rubber modified asphalt on the surface of the polyethylene base tire cloth by using a reciprocating automatic spraying machine to form a rubber modified asphalt layer 1, wherein one nozzle of a spray gun sprays the oil-in-water emulsion A in the embodiment 1, the other nozzle of the spray gun sprays the strong acid weak base salt solution A in the embodiment 1, the flow rates of the two nozzles of the spray gun are both 8kg/min, and the conveying speed of the polyethylene base tire cloth is 25 m/min;
3) spraying non-cured rubber asphalt to the bottom surface of the polyethylene base wadding by using a reciprocating automatic spraying machine to form a non-cured rubber asphalt layer 3; wherein one nozzle of the spray gun sprays the oil-in-water emulsion B in the embodiment 4, the other nozzle of the spray gun sprays the strong acid weak base salt solution B in the embodiment 4, the flow rates of the two nozzles of the spray gun are both 8kg/min, and the conveying speed of the polyethylene base tire fabric is 25 m/min;
4) covering the polyethylene isolating film on the non-cured rubber asphalt layer on the bottom surface of the polyethylene base fabric to serve as an isolating layer 4;
5) and (4) air-drying, rolling and packaging the coiled material obtained in the step 4) to obtain the composite waterproof coating prefabricated coiled material.
Example 8
The preparation method of the composite waterproof coating prefabricated coiled material comprises the following steps:
1) conveying the polyethylene base tire fabric as a polyethylene base tire fabric layer 2 through a conveying belt;
2) spraying rubber modified asphalt on the surface of the polyethylene base tire cloth by using a reciprocating automatic spraying machine to form a rubber modified asphalt layer 1, wherein one nozzle of a spray gun sprays the oil-in-water emulsion A in the embodiment 2, the other nozzle of the spray gun sprays the strong acid weak base salt solution A in the embodiment 2, the flow rates of the two nozzles of the spray gun are both 12kg/min, and the conveying speed of the polyethylene base tire cloth is 40 m/min;
3) spraying non-cured rubber asphalt to the bottom surface of the polyethylene base wadding by using a reciprocating automatic spraying machine to form a non-cured rubber asphalt layer 3; wherein one nozzle of the spray gun sprays the oil-in-water emulsion B in the embodiment 5, the other nozzle of the spray gun sprays the strong acid weak base salt solution B in the embodiment 5, the flow rates of the two nozzles of the spray gun are both 12kg/min, and the conveying speed of the polyethylene base tire fabric is 40 m/min;
4) covering the polyethylene isolating film on the non-cured rubber asphalt layer on the bottom surface of the polyethylene base fabric to serve as an isolating layer 4;
5) and (4) air-drying, rolling and packaging the coiled material obtained in the step 4) to obtain the composite waterproof coating prefabricated coiled material.
Example 9
The preparation method of the composite waterproof coating prefabricated coiled material comprises the following steps:
1) conveying the polyethylene base tire fabric as a polyethylene base tire fabric layer 2 through a conveying belt;
2) spraying rubber modified asphalt on the surface of the polyethylene base tire cloth by using a reciprocating automatic spraying machine to form a rubber modified asphalt layer 1, wherein one nozzle of a spray gun sprays the oil-in-water emulsion A in the embodiment 3, the other nozzle of the spray gun sprays the strong acid weak base salt solution A in the embodiment 3, the flow rates of the two nozzles of the spray gun are both 10kg/min, and the conveying speed of the polyethylene base tire cloth is 30 m/min;
3) spraying non-cured rubber asphalt to the bottom surface of the polyethylene base wadding by using a reciprocating automatic spraying machine to form a non-cured rubber asphalt layer 3; wherein one nozzle of the spray gun sprays the oil-in-water emulsion B in the embodiment 6, the other nozzle of the spray gun sprays the strong acid weak base salt solution B in the embodiment 6, the flow rates of the two nozzles of the spray gun are both 10kg/min, and the conveying speed of the polyethylene base tire fabric is 30 m/min;
4) covering the polyethylene isolating film on the non-cured rubber asphalt layer on the bottom surface of the polyethylene base fabric to serve as an isolating layer 4;
5) and (4) air-drying, rolling and packaging the coiled material obtained in the step 4) to obtain the composite waterproof coating prefabricated coiled material.
In the invention, the polyethylene base fabric is selected as the polyethylene base fabric layer, the polyethylene base fabric does not need to be presoaked, the filament polyester tire commonly used at present needs to be presoaked, and in addition, the water impermeability of the polyethylene base fabric is far better than that of the polyester tire. The rubber modified asphalt layer and the non-cured rubber asphalt layer can realize quick setting in the spraying process. The rubber modified asphalt layer 1 prepared in example 2 was tested to resist artificial accelerated aging for 5000 hours.
The non-cured rubber asphalt coating prepared in example 2 is detected according to JC/T2428-2017 Standard of non-cured rubber asphalt waterproof coating, and specific detection data are shown in Table 1.
TABLE 1 test data for non-curing rubberized asphalt coatings
Figure BDA0002701449710000101
As can be seen from Table 1, the non-curing rubber asphalt coating has good adhesion to a dry surface, good time-delay properties, and high and low temperature resistance.
The results of the polyethylene barrier film of the barrier layer are shown in table 2.
Table 2 test data for polyethylene barrier films
Figure BDA0002701449710000102
As can be seen from Table 2, the release layer had a polyethylene release film peel force of 10gf and an aged peel force of 38gf, which were all less than the factory standards, met the requirements, and had no residual adhesion.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrases "comprising … …" or "comprising … …" does not exclude the presence of additional elements in a process, method, article, or terminal that comprises the element. Further, herein, "greater than," "less than," "more than," and the like are understood to exclude the present numbers;
the terms "above", "below", "within" and the like are to be understood as including the number.
It should be noted that, although the above embodiments have been described herein, the invention is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein or by using equivalent structures or equivalent processes performed in the present specification, and are included in the scope of the present invention.

Claims (8)

1. The composite waterproof coating film prefabricated coiled material is characterized in that: which comprises the following components in sequence from top to bottom: the rubber-modified asphalt layer, the polyethylene-based tire fabric layer, the non-cured rubber asphalt layer and the isolation layer.
2. The composite waterproof coating film prefabricated roll material according to claim 1, characterized in that: the rubber modified asphalt layer is prepared by spraying rubber modified asphalt on the surface of the polyethylene base tire cloth layer, and comprises a component A and a component B, wherein the component A comprises the following components in parts by weight:
15-45 parts of anionic neoprene latex;
5-15 parts of anionic styrene-butadiene latex;
55-85 parts of anionic emulsified asphalt;
the component B comprises the following components in parts by weight:
CaCl21-2 parts;
MgSO41-2 parts;
and 9 parts of water.
3. The composite waterproof coating film prefabricated roll material according to claim 1, characterized in that: the non-cured rubber asphalt layer is prepared by spraying non-cured rubber asphalt on the bottom surface of the polyethylene base tire fabric layer, and comprises a component C and a component D, wherein the component C comprises the following components in parts by weight:
Figure RE-FDA0002780382630000011
the component D comprises the following components in parts by weight:
CaCl21-2 parts;
MgSO41-2 parts;
and 9 parts of water.
4. The composite waterproof coating film prefabricated roll material according to claim 1, characterized in that: the polyethylene base tire fabric layer is a polyethylene film with the thickness of 0.3mm-0.7 mm.
5. The composite waterproof coating film prefabricated roll material according to claim 1, characterized in that: the isolation film layer is a polyethylene isolation film.
6. The method for preparing a composite waterproof coating film prefabricated coil material according to any one of claims 1 to 5, characterized in that: which comprises the following steps:
1) conveying the polyethylene base tire fabric through a conveying belt to serve as a polyethylene base tire fabric layer;
2) spraying rubber modified asphalt on the surface of the polyethylene base tire cloth by adopting a reciprocating automatic spraying machine to form a rubber modified asphalt layer, wherein the flow of the spraying gun is 8-12kg/min, and the conveying speed of the polyethylene base tire cloth is 25-40 m/min;
3) spraying non-cured rubber asphalt to the bottom surface of the polyethylene base wadding by using a reciprocating automatic spraying machine to form a non-cured rubber asphalt layer; the flow rate of the spray gun is 8-12kg/min, and the conveying speed of the polyethylene base tire fabric is 25-40 m/min;
4) covering the polyethylene isolating film on the non-cured rubber asphalt layer on the bottom surface of the polyethylene base fabric to serve as an isolating layer;
5) and (4) air-drying, rolling and packaging the coiled material obtained in the step 4) to obtain the composite waterproof coating prefabricated coiled material.
7. The method for preparing a composite waterproof coating film prefabricated coil material according to claim 6, characterized in that: in the step 2), the anionic neoprene latex, the anionic styrene-butadiene latex and the anionic emulsified asphalt in the component A of the rubber modified asphalt layer are uniformly mixed in advance to form an oil-in-water emulsion A; then adding CaCl in the component B2And MgSO4Dissolving in water to form strong acid and weak base salt solution A;
when the rubber modified asphalt layer is sprayed, the oil-in-water emulsion A and the strong acid weak base salt solution A are respectively sprayed to the surface of the polyethylene base tire fabric through two nozzles of a spray gun.
8. The method for preparing a composite waterproof coating film prefabricated coil material according to claim 6, characterized in that: in the step 3), the anionic neoprene latex and the anionic styrene-butadiene latex in the component C of the non-cured rubber asphalt layer are pre-treatedMixing the anionic emulsified asphalt and the anionic emulsified base oil uniformly to form an oil-in-water emulsion B; then adding CaCl in the component D2And MgSO4Dissolving in water to form strong acid and weak base salt solution B;
when the non-cured rubber asphalt layer is sprayed, the oil-in-water emulsion B and the strong acid and weak base salt solution B are respectively sprayed to the bottom surface of the polyethylene base tire fabric through two nozzles of a spray gun.
CN202011023563.4A 2020-09-25 2020-09-25 Composite waterproof coating film prefabricated coiled material and preparation method thereof Pending CN112143388A (en)

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