CN113089855A - High-elasticity waterproof material - Google Patents

High-elasticity waterproof material Download PDF

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Publication number
CN113089855A
CN113089855A CN202110560317.0A CN202110560317A CN113089855A CN 113089855 A CN113089855 A CN 113089855A CN 202110560317 A CN202110560317 A CN 202110560317A CN 113089855 A CN113089855 A CN 113089855A
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CN
China
Prior art keywords
layer
waterproof
elastic
outer side
material according
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Pending
Application number
CN202110560317.0A
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Chinese (zh)
Inventor
强云峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gansu Kaihuang Waterproof Technology Building Materials Co ltd
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Gansu Kaihuang Waterproof Technology Building Materials Co ltd
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Priority to CN202110560317.0A priority Critical patent/CN113089855A/en
Publication of CN113089855A publication Critical patent/CN113089855A/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/66—Sealings
    • E04B1/665—Sheets or foils impervious to water and water vapor
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
    • C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Polymers & Plastics (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Architecture (AREA)
  • Medicinal Chemistry (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses a high-elasticity waterproof material, and relates to the technical field of waterproof materials. The waterproof coating comprises a base layer, wherein a coating is bonded on the top of the base layer, the coating comprises a bonding layer and a functional layer, the bonding layer is arranged between the functional layer and the base layer, the base layer and the functional layer are bonded through the bonding layer, the functional layer comprises an elastic layer, a waterproof layer and a top sun-proof layer, the elastic layer is arranged on the outer side of the bonding layer, the waterproof layer is arranged on the outer side of the elastic layer, the top sun-proof layer is arranged on the outer side of the waterproof layer, waterproof coating liquid is coated on the outer side of the top sun-proof layer, the elastic layer comprises two thermoplastic polyester elastic layers and two nylon elastic layers, and the thermoplastic polyester elastic. According to the invention, through the arrangement of the thermoplastic polyester elastic layer and the nylon elastic layer, the material has good elasticity, the damage of articles when falling or being impacted is avoided, and meanwhile, the material also has good protection effect on walls and the like.

Description

High-elasticity waterproof material
Technical Field
The invention belongs to the technical field of waterproof materials, and particularly relates to a high-elasticity waterproof material.
Background
The waterproof material is a general name of materials for preventing permeation, leakage and erosion of rainwater, snow water and underground water in an enclosure structure of a building, moisture, steam and other harmful gases and liquid in air and preventing seepage of water supply and drainage in a separation structure, however, most of the existing waterproof materials do not have an elastic function, so that the waterproof material is not strong in applicability in occasions with special requirements.
Disclosure of Invention
The invention aims to provide a high-elasticity waterproof material, which solves the existing problems: most of the existing waterproof materials do not have the elastic function, so that the waterproof material is not strong in applicability in occasions with special requirements.
In order to solve the technical problems, the invention is realized by the following technical scheme: the high-elasticity waterproof material comprises a base layer, wherein a coating is bonded on the top of the base layer;
the coating comprises an adhesive layer and a functional layer;
the bonding layer is arranged between the functional layer and the base layer, and the base layer is bonded with the functional layer through the bonding layer;
the functional layer comprises an elastic layer, a water-blocking layer and a top sun-blocking layer, the elastic layer is arranged on the outer side of the bonding layer, the water-blocking layer is arranged on the outer side of the elastic layer, the top sun-blocking layer is arranged on the outer side of the water-blocking layer, and waterproof masking liquid is coated on the outer side of the top sun-blocking layer.
Further, the elastic layer comprises two thermoplastic polyester elastic layers and two nylon elastic layers, and the elastic layer is formed by mutually overlapping the thermoplastic polyester elastic layers and the nylon elastic layers.
Furthermore, the waterproof layer comprises an ethylene-polypropylene waterproof layer and a polyurethane waterproof layer, the ethylene-polypropylene waterproof layer is arranged on the outer side of the nylon elastic layer, the polyurethane waterproof layer is arranged on the outer side of the ethylene-polypropylene waterproof layer, and the top sun-proof layer is arranged on the outer side of the polyurethane waterproof layer.
Furthermore, the waterproof coating liquid is prepared from various additives such as butyl methacrylate, polyvinyl acetate emulsion, sodium potassium silicate and the like and inorganic filler.
Further, the state of the waterproof masking liquid before application is cream-like, and the color is white.
Further, the thickness of the thermoplastic polyester elastic layer is between 300nm and 500 nm.
Further, the thickness of the nylon elastic layer is 200nm to 500 nm.
Further, the thickness of the ethylene polypropylene waterproof layer is 50nm to 100 nm.
Further, the thickness of the polyurethane waterproof layer is 50nm to 100 nm.
Further, the thickness of the top sunscreen layer is between 50nm and 100 nm.
The invention has the following beneficial effects:
according to the invention, through the arrangement of the thermoplastic polyester elastic layer and the nylon elastic layer, the material has good elasticity, the damage of articles when falling or being impacted is avoided, and meanwhile, the material also has good protection effect on walls and the like.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of a base layer, an adhesive layer, and a functional layer of the present invention;
fig. 3 is an enlarged view of the invention at a in fig. 2.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a base layer; 2. coating; 3. an adhesive layer; 4. a functional layer; 5. a thermoplastic polyester elastic layer; 6. A nylon elastic layer; 7. an ethylene polypropylene waterproof layer; 8. a polyurethane waterproof layer; 9. a top sunscreen layer; 10. Waterproof masking liquid.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention is a high-elasticity waterproof material, including a base layer 1, a coating layer 2 adhered on the top of the base layer 1, the coating layer 2 including an adhesive layer 3 and a functional layer 4, the adhesive layer 3 disposed between the functional layer 4 and the base layer 1, and the base layer 1 and the functional layer 4 adhered through the adhesive layer 3;
the functional layer 4 comprises an elastic layer, a water-resistant layer and a top sun-proof layer 9, the elastic layer is arranged on the outer side of the bonding layer 3, and the water-resistant layer is arranged on the outer side of the elastic layer;
the top sun-proof layer 9 is arranged on the outer side of the water-resistant layer, the thickness of the top sun-proof layer 9 is 50nm to 100nm, the effect of the top sun-proof layer 9 on sun protection is better, and further the sun is prevented from directly shining, the outer side of the top sun-proof layer 9 is coated with the waterproof coating liquid 10, and the waterproof coating liquid 10 is formed by configuring various auxiliary agents such as butyl methacrylate, polyvinyl acetate emulsion, potassium sodium silicate and the like and inorganic fillers.
The waterproof masking liquid 10 is in a cream state before being coated and is white in color, so that the waterproof masking liquid 10 can effectively prevent water and avoid water leakage.
The elastic layer includes two-layer thermoplasticity polyester elastic layer 5 and two-layer nylon elastic layer 6, and the elastic layer is formed by mutual overlap of thermoplasticity polyester elastic layer 5 and nylon elastic layer 6, and thermoplasticity polyester elastic layer 5's thickness is between 300nm to 500nm, and nylon elastic layer 6's thickness is between 200nm to 500nm for this material can have elastic function, and then can have certain protection or guard action to wall or article.
The waterproof layer includes ethylene polypropylene fibre waterproof layer 7 and polyurethane waterproof layer 8, and the thickness of ethylene polypropylene fibre waterproof layer 7 is between 50nm to 100nm, and the thickness of polyurethane waterproof layer 8 is between 50nm to 100nm for the waterproof performance of this material is better, and ethylene polypropylene fibre waterproof layer 7 sets up in the outside of nylon elastic layer 6, and polyurethane waterproof layer 8 sets up in the outside of ethylene polypropylene fibre waterproof layer 7, and sun-proof layer 9 in top sets up in the outside of polyurethane waterproof layer 8.
One specific application of this embodiment is: this material is when using, with the material through the adhesive linkage 3 apply paint with a brush or bond on basic unit 1, carry out sun-proof protection to this material through sun-proof layer 9 in top, it is further waterproof through waterproof masking liquid 10, carry out water repellent through polyurethane waterproof layer 8 and ethylene polypropylene fibre waterproof layer 7 after that, make this material can be waterproof to wall etc. and through the setting of the mutual overlap of thermoplasticity polyester elastic layer 5 and nylon elastic layer 6, can make this material have good elasticity, avoid article to drop or damage when receiving the striking, also make this material have good guard action to wall etc. simultaneously.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (10)

1. A waterproof material of high elasticity, includes basic unit (1), its characterized in that: the top of the base layer (1) is bonded with a coating (2);
the coating (2) comprises an adhesive layer (3) and a functional layer (4);
the bonding layer (3) is arranged between the functional layer (4) and the base layer (1), and the base layer (1) is bonded with the functional layer (4) through the bonding layer (3);
the functional layer (4) comprises an elastic layer, a water-resistant layer and a top sun-resistant layer (9), the elastic layer is arranged on the outer side of the bonding layer (3), the water-resistant layer is arranged on the outer side of the elastic layer, the top sun-resistant layer (9) is arranged on the outer side of the water-resistant layer, and the outer side of the top sun-resistant layer (9) is coated with waterproof masking liquid (10).
2. The highly elastic waterproof material according to claim 1, characterized in that: the elastic layer comprises two thermoplastic polyester elastic layers (5) and two nylon elastic layers (6), and the elastic layer is formed by mutually overlapping the thermoplastic polyester elastic layers (5) and the nylon elastic layers (6).
3. The highly elastic waterproof material according to claim 1, characterized in that: the waterproof layer comprises an ethylene-polypropylene waterproof layer (7) and a polyurethane waterproof layer (8), the ethylene-polypropylene waterproof layer (7) is arranged on the outer side of the nylon elastic layer (6), the polyurethane waterproof layer (8) is arranged on the outer side of the ethylene-polypropylene waterproof layer (7), and the top sun-proof layer (9) is arranged on the outer side of the polyurethane waterproof layer (8).
4. The highly elastic waterproof material according to claim 1, characterized in that: the waterproof coating liquid (10) is prepared from various additives such as butyl methacrylate, polyvinyl acetate emulsion, sodium potassium silicate and the like and inorganic filler.
5. The highly elastic waterproof material according to claim 1, characterized in that: the waterproof masking liquid (10) is in a cream state before being coated and is white in color.
6. The highly elastic waterproof material according to claim 2, characterized in that: the thickness of the thermoplastic polyester elastic layer (5) is between 300nm and 500 nm.
7. The highly elastic waterproof material according to claim 2, characterized in that: the thickness of the nylon elastic layer (6) is 200nm to 500 nm.
8. The highly elastic waterproof material according to claim 3, characterized in that: the thickness of the ethylene polypropylene fiber waterproof layer (7) is 50nm to 100 nm.
9. The highly elastic waterproof material according to claim 3, characterized in that: the thickness of the polyurethane waterproof layer (8) is 50nm to 100 nm.
10. The highly elastic waterproof material according to claim 3, characterized in that: the thickness of the top sunscreen layer (9) is between 50nm and 100 nm.
CN202110560317.0A 2021-05-21 2021-05-21 High-elasticity waterproof material Pending CN113089855A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110560317.0A CN113089855A (en) 2021-05-21 2021-05-21 High-elasticity waterproof material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110560317.0A CN113089855A (en) 2021-05-21 2021-05-21 High-elasticity waterproof material

Publications (1)

Publication Number Publication Date
CN113089855A true CN113089855A (en) 2021-07-09

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Application Number Title Priority Date Filing Date
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CN (1) CN113089855A (en)

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05248043A (en) * 1991-12-25 1993-09-24 Mitsui Toatsu Chem Inc Waterproof sheet for roof
CN1181403A (en) * 1996-10-29 1998-05-13 招远市聚氨酯制品有限公司 Method for prepn. of polyurethane anti-corrosion paint and its products
CN2489000Y (en) * 2001-07-04 2002-05-01 张超 Composite water-proof coiled material made of polyester film and nonwoven fabrics
KR100776243B1 (en) * 2006-12-27 2007-11-16 장혁수 Waterproofing method
CN101586381A (en) * 2008-05-20 2009-11-25 北京森聚柯高分子材料有限公司 Waterproof structure and manufacturing method thereof
CN202202421U (en) * 2011-09-02 2012-04-25 茹家佑 Durable polyurethane waterproof coiled material
CN104908374A (en) * 2015-05-25 2015-09-16 江苏优珀斯材料科技有限公司 High-strength high-temperature-resistant nylon composite film for waterproof roll substrate, and processing method thereof
CN205189263U (en) * 2015-10-27 2016-04-27 重庆市永川区新泰防水材料有限公司 House is with waterproof shop layer
CN205705582U (en) * 2016-06-15 2016-11-23 乐陵市润达防水材料有限公司 A kind of waterproof roll of entire volume
CN207373821U (en) * 2017-10-30 2018-05-18 南京汇涛节能科技有限公司 A kind of fire resistant water-proof polyurethane coiled material
CN207498714U (en) * 2017-07-07 2018-06-15 吴江昌源纺织有限公司 A kind of waterproof antiultraviolet is through playing cloth
CN209904136U (en) * 2018-10-31 2020-01-07 浙江恒鼎涂料有限公司 Waterproof reflective coiled material convenient to overlap joint
CN111186198A (en) * 2019-12-31 2020-05-22 北京东方雨虹防水技术股份有限公司 Multilayer composite high-polymer waterproof sheet and preparation method thereof
EP3717235A1 (en) * 2017-11-29 2020-10-07 Sika Technology AG A roofing membrane with a functional layer

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05248043A (en) * 1991-12-25 1993-09-24 Mitsui Toatsu Chem Inc Waterproof sheet for roof
CN1181403A (en) * 1996-10-29 1998-05-13 招远市聚氨酯制品有限公司 Method for prepn. of polyurethane anti-corrosion paint and its products
CN2489000Y (en) * 2001-07-04 2002-05-01 张超 Composite water-proof coiled material made of polyester film and nonwoven fabrics
KR100776243B1 (en) * 2006-12-27 2007-11-16 장혁수 Waterproofing method
CN101586381A (en) * 2008-05-20 2009-11-25 北京森聚柯高分子材料有限公司 Waterproof structure and manufacturing method thereof
CN202202421U (en) * 2011-09-02 2012-04-25 茹家佑 Durable polyurethane waterproof coiled material
CN104908374A (en) * 2015-05-25 2015-09-16 江苏优珀斯材料科技有限公司 High-strength high-temperature-resistant nylon composite film for waterproof roll substrate, and processing method thereof
CN205189263U (en) * 2015-10-27 2016-04-27 重庆市永川区新泰防水材料有限公司 House is with waterproof shop layer
CN205705582U (en) * 2016-06-15 2016-11-23 乐陵市润达防水材料有限公司 A kind of waterproof roll of entire volume
CN207498714U (en) * 2017-07-07 2018-06-15 吴江昌源纺织有限公司 A kind of waterproof antiultraviolet is through playing cloth
CN207373821U (en) * 2017-10-30 2018-05-18 南京汇涛节能科技有限公司 A kind of fire resistant water-proof polyurethane coiled material
EP3717235A1 (en) * 2017-11-29 2020-10-07 Sika Technology AG A roofing membrane with a functional layer
CN209904136U (en) * 2018-10-31 2020-01-07 浙江恒鼎涂料有限公司 Waterproof reflective coiled material convenient to overlap joint
CN111186198A (en) * 2019-12-31 2020-05-22 北京东方雨虹防水技术股份有限公司 Multilayer composite high-polymer waterproof sheet and preparation method thereof

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
付蒙等: "热塑性弹性体的改性与应用进展", 《塑料科技》 *
刘绍斌等: "高弹性彩色防水涂料的研制与应用", 《新型建筑材料》 *
赵萌: "纺织材料在建筑领域中的应用", 《建材技术与应用》 *

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Application publication date: 20210709