CN115029079A - High-performance environment-friendly asphalt-based pre-paved waterproof coiled material and preparation method thereof - Google Patents

High-performance environment-friendly asphalt-based pre-paved waterproof coiled material and preparation method thereof Download PDF

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CN115029079A
CN115029079A CN202210823248.2A CN202210823248A CN115029079A CN 115029079 A CN115029079 A CN 115029079A CN 202210823248 A CN202210823248 A CN 202210823248A CN 115029079 A CN115029079 A CN 115029079A
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asphalt
coiled material
based pre
friendly
performance environment
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CN115029079B (en
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张福中
王继飞
杨庆
王继平
丁圣军
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Jiangsu Ruijian Technology Co ltd
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Jiangsu Ruijian 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
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/29—Laminated material
    • 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
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic
    • 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
    • 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
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • 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
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/346—Applications of adhesives in processes or use of adhesives in the form of films or foils for building applications e.g. wrap foil
    • 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
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
    • C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
    • C09J2301/122—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
    • 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
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
    • C09J2301/408—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the adhesive layer
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2450/00—Gaskets
    • E02D2450/10—Membranes
    • E02D2450/105—Membranes impermeable
    • E02D2450/106—Membranes impermeable for liquids
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2450/00—Gaskets
    • E02D2450/10—Membranes
    • E02D2450/108—Membranes multi-layered
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/30—Landfill technologies aiming to mitigate methane emissions

Abstract

The invention discloses a high-performance environment-friendly asphalt-based pre-paved waterproof coiled material and a preparation method thereof, wherein the high-performance environment-friendly asphalt-based pre-paved waterproof coiled material comprises an asphalt bonding layer formed by coating an asphalt mixture on a base; the asphalt mixture comprises the following raw materials in percentage by weight: 50% -70% of petroleum asphalt; 10% -25% of a modifier; 2% -10% of an auxiliary agent; 10 to 25 percent of filler. The asphalt mixture is prepared by simple and effective raw materials, and the obtained asphalt coiled material has excellent high and low temperature performance, peel strength, impermeability, storage stability and aging resistance, and is beneficial to energy conservation, environmental protection and process simplification. The self-adhesion of asphalt base makes the coiled material and structural layer firmly adhered, and any local damage occurs, so that the water is limited in a small range and does not flow. Meanwhile, the self-adhesive layer has a self-healing function, and local damage points can be healed by asphalt.

Description

High-performance environment-friendly asphalt-based pre-paved waterproof coiled material and preparation method thereof
Technical Field
The invention relates to the field of building waterproofing, in particular to a high-performance environment-friendly asphalt-based pre-paved waterproof coiled material.
Background
With the acceleration of the urbanization process of China, underground space resources are developed and utilized, and the method becomes a necessary choice for the development of a plurality of cities at present and in future. The underground construction is soaked by underground water for a long time and is in a humid and water-permeable environment, so that the normal use and durability of underground facilities are ensured, and the work of waterproof, seepage-proof and anticorrosion is important. In recent years, an underground pre-paving reverse-adhesion waterproof construction method is advocated, in which a waterproof coiled material coated with a self-adhesion layer is laid on a base surface in an empty manner, and then structural concrete is poured to tightly bond concrete slurry and the coiled material.
The underground pre-paved waterproof coiled material is the most applied non-asphalt-based self-adhesive film waterproof coiled material at present, and the main material is high-density polyethylene which mainly provides high strength; the self-adhesive layer is a hot melt adhesive and provides good adhesive property; the protective layer is quartz sand or sintered sand, which can not only expose the coiled material properly during construction, but also provide a non-sticky surface for constructors to walk, and enable the subsequent procedures to be smoothly bonded with the structural concrete. However, the high-density polyethylene sheet with the thickness not less than 0.9mm required by national standards often fluctuates and warps in practical application due to too high hardness, so that the coiled material can not be completely attached to the surface of the base layer after being laid, and the flat and seamless bonding of the lap edges is not easy to realize, thereby having leakage hidden trouble. In addition, the bonding durability of the hot melt adhesive in the underground long-term humid environment is very limited, and the requirements of the specification of the same waterproof life and the same building life (the general specification of waterproof engineering of buildings and municipal engineering) cannot be met. The anti-sticking sand of the protective layer is easy to fall off in the transportation and construction processes, the self weight is large, the transportation is inconvenient, and the cohesiveness of the glue layer exposed after the protective sand falls off is greatly reduced.
Modified asphalt self-adhesive waterproof coiled materials have long been used as one of the most effective materials for underground waterproofing. In fact, the high and low temperature resistance, the deformation resistance, the impermeability and the self-healing performance of the modified asphalt mixture are superior to those of hot melt adhesives, and particularly, the bonding performance of the modified asphalt-based mixture in underground engineering is less influenced by special environments such as humid environment, acid, alkali, salt and the like. In addition, the selection of the protective layer is not satisfactory at present, various anti-sticking sands are selected, and the situation that the sands fall off or the sands sink down when being heated and are embedded into the glue exists, so that the performance of the exposed bonding layer is attenuated, and the final peeling strength between the bonding layer and the structural concrete is influenced. Or the protective layer is made of anti-sticking coating, although the pre-paved anti-sticking effect can be realized, the direct bonding strength between the adhesive layer and the structural concrete is weakened to a certain extent due to the coating of the coating film.
Disclosure of Invention
The invention aims to provide a high-performance environment-friendly asphalt-based pre-paved waterproof coiled material which is concise in formula, efficient in production, light in transportation and quick in construction.
In order to solve the problems, the invention adopts the technical scheme that:
a high performance environmental protection pitch base is laid waterproofing membrane in advance, characterized by: comprises an asphalt bonding layer formed by coating an asphalt mixture on a base; the asphalt mixture comprises the following raw materials in percentage by weight:
50% -70% of petroleum asphalt;
10% -25% of a modifier;
2% -10% of an auxiliary agent;
10 to 25 percent of filler.
The petroleum asphalt is 70# asphalt, 90# asphalt or the combination thereof.
The modifier is a star styrene-butadiene-styrene block copolymer (SBS), such as: kraton D1116AIM, Yanshan petrochemical 4452, Yuanyangyan petrochemical YH-805, LG411S and the like. The strength and the high-temperature stability of the star-shaped SBS modified asphalt are higher than those of the linear SBS modified asphalt, and the star-shaped SBS modified asphalt has more excellent elasticity and low-temperature performance than the linear SBS modified asphalt.
The assistant is poly alpha-methyl styrene resin (PaMS) with viscosity average molecular weight of 590-1416, such as: TOTAL Cray Valley W-120, W-100, Keteng SA100, SA120, AMS-120, etc. The PaMS resin has good heat resistance, ultraviolet resistance, acid and alkali resistance and the like, and can improve the elasticity, flexibility, adhesion, water resistance, low-temperature crack resistance and durability of the coiled material.
The filler is talcum powder, calcium powder or the combination of the talcum powder and the calcium powder. The inorganic filler can promote an SBS modified asphalt system to form a three-dimensional network structure, can improve the hardness and softening point of the modified asphalt and reduce the penetration, thereby ensuring the stiffness and high-temperature stability of the coiled material.
The base material is a cross laminated film, and is formed by crossing, laminating and compounding 45-degree obliquely cut single-layer high-density polyethylene films, and the thickness of the film is 0.3-0.5 mm. The film has strong puncture resistance, high tearing strength and high elongation; the coiled material has strong size stability and ultraviolet resistance, can be exposed for construction for more than 3 months without shrinkage, has unique continuous tearing resistance and nail stem tearing resistance, and can help the self-healing of the nail holes of the coiled material and the field cutting.
The asphalt mixture layer is covered with a degradable anti-sticking protective layer, and the material of the degradable anti-sticking protective layer is one or the combination of more of degradable Polyhydroxyalkanoate (PHA), poly 3-hydroxybutyrate (PHB), copolymer of 3-hydroxybutyrate and 3-hydroxyvalerate (PHBV) and copolymer of 3-hydroxybutyrate and 3-hydroxyhexanoate (PHBHHx). The PHAs polyhydroxy fatty acid ester polymer contains ester bonds which are easily attacked by enzyme, so the PHAs polyhydroxy fatty acid ester polymer is more easily decomposed and metabolized by various microorganisms in the nature and enzymes in animals and plants in the nature, and finally decomposed into carbon dioxide and water, and has no influence on the environment. The PHAs degradable polymer has high thermal deformation temperature and good thermal processing performance, and the completely biodegradable film product prepared by calendering can ensure that the degradation period is 2-6 months by adjusting the monomer ratio.
The protective layer coated on the asphalt mixture layer has a film thickness of 0.05mm-0.08 mm.
The preparation method of the high-performance environment-friendly asphalt-based pre-paved waterproof coiled material is characterized by comprising the following steps of: the method comprises the following steps:
(1) preparing an asphalt mixture: heating the petroleum asphalt to 190 ℃ below zero, adding a modifier, carrying out heat preservation reaction for 1-2 hours, cooling to 170 ℃ below zero, adding the auxiliary agent, mixing for 0.5-1 hour, adding a filler, and stirring for 0.5-1 hour to obtain an asphalt mixture;
(2) and (3) uniformly stirring the asphalt mixture, and coating the mixture on the base to form the asphalt bonding layer.
And further covering a degradable anti-sticking protective layer on the asphalt bonding layer for molding.
The invention has wide sources of all raw materials and can be obtained by commercial products.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the asphalt mixture is prepared by simple and effective raw materials, and the obtained asphalt coiled material has excellent high and low temperature performance, peel strength, impermeability, storage stability and aging resistance, and is beneficial to energy conservation, environmental protection and process simplification. The self-adhesion of asphalt base makes the coiled material and structural layer firmly adhered, and any local damage occurs, so that the water is limited in a small range and does not flow. Meanwhile, the self-adhesive layer has a self-healing function, and local damage points can be healed by asphalt.
The invention adopts the strong cross laminated film as the base, the longitudinal and transverse tensile strength and the elongation are both large, the tearing strength is high, when the nail penetrates through the cross laminated film, the film pressed in the longitudinal and transverse 45 directions in a staggered way can wrap the nail, and the tearing is not easy to generate. Has good dimensional stability, is smooth and does not wrinkle, and is particularly convenient for construction at detail joints.
The invention adopts the polyhydroxyalkanoates degradable membrane as a protective layer, the main chain of PHAs is formed by connecting aliphatic structural units through ester bonds which are easy to hydrolyze, and the main chain is flexible and flexible, so that the PHAs is easy to be catabolized by various microorganisms in the nature and finally degraded into CO 2 And H 2 And O. The degradable PHAs are environment-friendly bioplastic with excellent performance and have a plurality of adjustable material properties. The controllable PHA molecular weight and composition are realized by adjusting mutagenic polymerase and metabolic engineering, and the performance diversity and adjustable degradation speed brought by the composition structure diversity have obvious advantages in application.
The high-performance environment-friendly asphalt-based pre-laid waterproof coiled material has excellent high and low temperature resistance, asphalt products applied underground are not affected by damp environments, the durability of the high-performance environment-friendly asphalt-based pre-laid waterproof coiled material exceeds that of the existing pre-laid hot melt adhesive products, the production process is simple, a sand surface anti-sticking protective layer is not adopted, the self weight of the coiled material is light, the energy is saved, the environment is protected, the waterproof coiled material is soft and conformable and easy to construct, the bonding strength is increased along with the degradation of the protective layer day by day until the waterproof coiled material is completely attached to a structural layer and is permanently kept. In addition, the method has simple formula and low equipment investment and operation cost, and is favorable for popularization and application.
The present invention will be further described with reference to the following examples.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the following description. The present invention will be described in further detail with reference to specific examples, but the present invention is not limited to the following examples. In the following examples, "%" means "weight percent".
The modifier is star-shaped styrene-butadiene-styrene block copolymer (SBS). The assistant is poly alpha-methylstyrene resin (PaMS) with viscosity average molecular weight of 590-1416.
The base material is cross laminated film, which is formed by crossing, laminating and compounding 45-degree obliquely cut single-layer high-density polyethylene film, and the film thickness is 0.4 mm.
Example 1:
a high-performance environment-friendly asphalt-based pre-paved waterproof coiled material comprises an asphalt bonding layer formed by coating an asphalt mixture on a base; the asphalt mixture comprises the following raw materials in percentage by weight:
52% of petroleum asphalt;
25% of a modifier;
3% of an auxiliary agent;
20% of filler.
The petroleum asphalt is 70# asphalt.
The modifier is star-shaped styrene-butadiene-styrene block copolymer (SBS) and Kraton D1116 AIM.
The assistant is poly alpha-methyl styrene resin (PaMS): TOTAL Cray Valley W-120.
The filler is talcum powder.
The preparation method comprises the following steps:
(1) preparing an asphalt mixture: heating the petroleum asphalt to 180 ℃, adding a modifier, reacting for 1.5 hours under heat preservation, cooling to 150 ℃, adding the auxiliary agent, mixing for 0.6 hour, adding a filler, and stirring for 0.6 hour to obtain an asphalt mixture;
(2) and (3) uniformly stirring the asphalt mixture, and coating the mixture on the base to form the asphalt bonding layer.
(3) And covering a degradable anti-sticking protective layer on the asphalt bonding layer, and molding. The material of degradable antiseized protective layer is degradable Polyhydroxyalkanoates (PHA), thickness: 0.06 mm.
Example 2:
a high-performance environment-friendly asphalt-based pre-paved waterproof coiled material comprises an asphalt bonding layer formed by coating an asphalt mixture on a base; the asphalt mixture comprises the following raw materials in percentage by weight:
60% of petroleum asphalt;
20% of a modifier;
5% of an auxiliary agent;
15% of filler.
The petroleum asphalt is 90# asphalt.
The modifier is star-shaped styrene-butadiene-styrene block copolymer (SBS) and Yanshan petrochemical 4452.
The assistant is poly alpha-methyl styrene resin (PaMS): TOTAL Cray Valley W-100.
The filler is calcium powder.
The preparation method is the same as example 1.
Example 3:
a high-performance environment-friendly asphalt-based pre-paved waterproof coiled material comprises an asphalt bonding layer formed by coating an asphalt mixture on a base; the asphalt mixture comprises the following raw materials in percentage by weight:
65% of petroleum asphalt;
18% of a modifier;
7% of an auxiliary agent;
10% of filler.
The petroleum asphalt is 70# asphalt.
The modifier is star styrene-butadiene-styrene block copolymer (SBS) and Yueyang petrochemical YH-805.
The assistant is poly alpha-methyl styrene resin (PaMS): kraton SA 100.
The filler is talcum powder.
The preparation method is the same as example 1.
Example 4:
a high-performance environment-friendly asphalt-based pre-paved waterproof coiled material comprises an asphalt bonding layer formed by coating an asphalt mixture on a base; the asphalt mixture comprises the following raw materials in percentage by weight:
69% of petroleum asphalt;
10% of a modifier;
9% of an auxiliary agent;
12% of filler.
The petroleum asphalt is 90# asphalt.
The modifier is star styrene-butadiene-styrene block copolymer (SBS), LG 411S.
The assistant is poly alpha-methyl styrene resin (PaMS): kraton SA 120.
The filler is calcium powder.
The preparation method is the same as example 1.
Example 5:
a high-performance environment-friendly asphalt-based pre-paved waterproof coiled material comprises an asphalt bonding layer formed by coating an asphalt mixture on a base; the asphalt mixture comprises the following raw materials in percentage by weight:
62% of petroleum asphalt;
11% of a modifier;
2% of an auxiliary agent;
25% of filler.
The petroleum asphalt is 70# asphalt.
The modifier is star-shaped styrene-butadiene-styrene block copolymer (SBS) and Kraton D1116 AIM.
The assistant is poly alpha-methyl styrene resin (PaMS): TOTAL Cray Valley W-120.
The filler is talcum powder.
The preparation method comprises the following steps:
(1) preparing an asphalt mixture: heating the petroleum asphalt to 180 ℃, adding a modifier, reacting for 1.5 hours under heat preservation, cooling to 150 ℃, adding the auxiliary agent, mixing for 0.6 hour, adding a filler, and stirring for 0.6 hour to obtain an asphalt mixture;
(2) uniformly stirring the asphalt mixture, and coating the mixture on a base to form an asphalt bonding layer;
(3) and mineral sand is arranged on the asphalt bonding layer.
In example 5, since the mineral sand on the surface for isolating the asphalt bonding layer is irregular particles, edges of the sand grains are often sharp and sharp, and when the mineral sand is subjected to external forces such as pulling, puncturing and tearing, the sand grains penetrate the asphalt bonding layer in advance under the assistance of the external force to cause fine damage to the crossed film, and the mechanical property of the crossed film is greatly weakened by the pre-damage.
TABLE 1
Figure DEST_PATH_IMAGE002
The bonding strength of the pre-paved coiled material and the post-poured concrete in the examples 1 to 4 is gradually enhanced along with the degradation of the protective layer until the asphalt bonding layer is completely adhered to the concrete structure. Although the protective sand layer in the embodiment 5 can be integrated with the post-cast concrete to realize the bonding with the asphalt layer in the curing process, the concrete sand stone contacting the asphalt layer obviously has a higher sand content, and the bonding and peeling strength with the asphalt layer is obviously inferior to the full bonding effect between the concrete and the asphalt layer in the embodiments 1 to 4.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (10)

1. A high performance environmental protection pitch base is laid waterproofing membrane in advance, characterized by: comprises an asphalt bonding layer formed by coating an asphalt mixture on a base; the asphalt mixture comprises the following raw materials in percentage by weight:
50% -70% of petroleum asphalt;
10% -25% of a modifier;
2% -10% of an auxiliary agent;
10 to 25 percent of filler.
2. The high-performance environment-friendly asphalt-based pre-paved waterproof coiled material as claimed in claim 1, which is characterized in that: the petroleum asphalt is 70# asphalt, 90# asphalt or the combination thereof.
3. The high-performance environment-friendly asphalt-based pre-paved waterproof coiled material as claimed in claim 1, which is characterized in that: the modifier is a star-shaped styrene-butadiene-styrene block copolymer.
4. The high-performance environment-friendly asphalt-based pre-paved waterproof coiled material as claimed in claim 1, which is characterized in that: the assistant is poly alpha-methyl styrene resin with viscosity average molecular weight of 590-1416.
5. The high-performance environment-friendly asphalt-based pre-paved waterproof coiled material as claimed in claim 1, which is characterized in that: the filler is talcum powder, calcium powder or the combination of the talcum powder and the calcium powder.
6. The high-performance environment-friendly asphalt-based pre-paved waterproof roll as claimed in claim 1, which is characterized in that: the base material is a cross laminated film, and is formed by crossing, laminating and compounding 45-degree obliquely cut single-layer high-density polyethylene films, and the thickness of the film is 0.3-0.5 mm.
7. The high-performance environment-friendly asphalt-based pre-paved waterproof coiled material as claimed in claim 1, which is characterized in that: the asphalt mixture layer is covered with a degradable anti-sticking protective layer, and the material of the degradable anti-sticking protective layer is one or a combination of more of degradable polyhydroxyalkanoate, poly 3-hydroxybutyrate, a copolymer of 3-hydroxybutyrate and 3-hydroxyvalerate and a copolymer of 3-hydroxybutyrate and 3-hydroxyhexanoate.
8. The high-performance environment-friendly asphalt-based pre-paved waterproof coiled material as claimed in claim 7, which is characterized in that: the protective layer coated on the asphalt mixture layer has a film thickness of 0.05mm-0.08 mm.
9. The preparation method of the high-performance environment-friendly asphalt-based pre-paved waterproof roll material as claimed in claim 1, which is characterized by comprising the following steps: the method comprises the following steps:
(1) preparing an asphalt mixture: heating the petroleum asphalt to 190-;
(2) and (3) uniformly stirring the asphalt mixture, and coating the asphalt mixture on the base to form the asphalt bonding layer.
10. The preparation method of the high-performance environment-friendly asphalt-based pre-paved waterproof roll as claimed in claim 9, which is characterized by comprising the following steps: and further covering a degradable anti-sticking protective layer on the asphalt bonding layer for molding.
CN202210823248.2A 2022-07-14 2022-07-14 High-performance environment-friendly asphalt-based pre-paved waterproof roll and preparation method thereof Active CN115029079B (en)

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