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Anionic emulsified modified asphalt and preparation method thereof and anionic high-adhesiveness waterborne asphalt waterproof coating

A technology of emulsified modified asphalt and asphalt waterproof coatings, which is applied in the direction of asphalt coatings, chloroprene homopolymer coatings, coatings, etc., and can solve the problems of self-adhesive waterproof membrane layer swelling, unfavorable membrane construction, and environmental smoke. Air pollution and other issues, to achieve excellent anti-aging performance and bonding performance, improve chemical aging resistance, the effect of large construction thickness

Active Publication Date: 2019-04-05
BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Non-curing rubber asphalt waterproof coatings came into being under this demand, but non-curing coatings need to be heated to high temperature to flow before spraying or brushing. The construction process will cause smoke pollution to the environment, and due to the need for high temperature heating, It is easy to cause fire in the complex on-site construction environment, which makes the construction personnel face great safety risks
Therefore patent application CN106398536, CN107083190 propose the scheme of preparing water-based non-curing rubber asphalt waterproof coating to solve these problems, but still added organic solvents such as aromatic oil or naphthenic oil in the above-mentioned patent application, there is the harm to environment
At the same time, the above-mentioned patent application adopts a two-component spraying construction method. The curing agent component contains more than 50% of water. After the coating is sprayed, some water will remain on the surface and inside of the adhesive layer, which is not conducive to the next step of coil construction. , and the moisture inside the adhesive layer will gradually volatilize and cause the self-adhesive waterproof membrane layer to bulge and peel off

Method used

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  • Anionic emulsified modified asphalt and preparation method thereof and anionic high-adhesiveness waterborne asphalt waterproof coating
  • Anionic emulsified modified asphalt and preparation method thereof and anionic high-adhesiveness waterborne asphalt waterproof coating

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preparation example Construction

[0026] A second aspect of the present invention provides a method for preparing the above-mentioned anionic emulsified modified asphalt, the preparation method comprising the following steps:

[0027] (1) Mixing the carbon nanofiber, the surface modifier and the macromolecular modifier uniformly to obtain a modified solution;

[0028] (2) uniformly dispersing the modified liquid in the molten base asphalt to obtain modified asphalt;

[0029] (3) uniformly mixing the anionic surfactant, pH regulator and water to obtain a soap solution;

[0030] (4) Mixing the soap liquid and the molten modified asphalt evenly to obtain the anionic emulsified modified asphalt.

[0031] As a preferred solution, step (2) is to add the modified liquid in the form of spray into the molten matrix asphalt stirred by high-speed shearing, and disperse evenly to obtain the modified asphalt;

[0032] Step (4) is to pass the soap solution and the molten modified asphalt through a colloid mill to obtain t...

Embodiment 1

[0051] This embodiment provides an anionic high-bonding water-based asphalt waterproof coating, which consists of 75 parts of anionic emulsified modified asphalt, 15 parts of acrylic emulsion, 7 parts of water-based SBR viscosity-increasing emulsion, 60 parts of slurry, and 1.5 parts of alcohol ester dodeca and 2 parts of bentonite, and mix the above-mentioned raw materials uniformly in a mixer to obtain the anionic high-binding water-based asphalt waterproof coating.

[0052] Among them, the anionic emulsified modified asphalt consists of 70 parts of 90# heavy traffic asphalt, 5 parts of neoprene latex, 6 parts of liquid butyl rubber, 1 part of nano-carbon fiber, 0.5 parts of aminosilane coupling agent, 1.4 parts of tall oleic acid, Composed of 0.6 parts of sodium hydroxide and 35 parts of water; the specific preparation method is: disperse neoprene latex, liquid butyl rubber, nano-carbon fiber and aminosilane coupling agent through a homogenizer to obtain a modified liquid; a...

Embodiment 2

[0055] The present embodiment provides an anionic high-bonding water-based asphalt waterproof coating, consisting of 70 parts of anionic emulsified modified asphalt, 10 parts of acrylic acid emulsion, 10 parts of chloroprene latex, 40 parts of slurry, 5 parts of water-based SBR viscosity-increasing emulsion, It is composed of 1 part of alcohol ester dodecane and 1 part of alkali-swellable acrylic thickener. The above-mentioned raw materials are uniformly mixed in a mixer to obtain the anionic high-binding water-based asphalt waterproof coating.

[0056] Among them, the anionic emulsified modified asphalt consists of 60 parts of 110# asphalt, 8 parts of SBR emulsion, 5 parts of liquid butyl rubber, 0.8 parts of nano-carbon fiber, 2 parts of multi-branched alcohol modified surfactant, 1.2 parts of tetradecyl Alcohol ether sodium carboxylate, composed of 0.6 parts of sodium hydroxide and 35 parts of water; the specific preparation method is: uniformly dispersing SBR emulsion, liqu...

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Abstract

The invention discloses anionic emulsified modified asphalt and a preparation method thereof and anionic high-adhesiveness waterborne asphalt waterproof coating. The anionic emulsified modified asphalt is prepared from, by mass, 50-70 parts of matrix asphalt, 1-20 parts of a polymer modifier, 0.5-2 parts of nano carbon fibers, 2-5 parts of a surface modifier, 1-2 parts of an anionic surfactant, 0.1-0.8 part of a pH regulator and 20-40 parts of water. A film formed by the waterproof coating has excellent creep performance and extending performance and is capable of well sealing cracks of a baselayer to effectively resist cracking caused by base layer settlement, deformation and the like, water channeling is prevented, and reliability of an upper waterproof roll is improved.

Description

technical field [0001] The invention belongs to the technical field of waterproof materials, and more specifically relates to an anionic emulsified modified asphalt and a preparation method thereof, and an anionic high-binding water-based asphalt waterproof coating. Background technique [0002] With people's increasing emphasis on environmental protection and the continuous upgrading of national environmental protection policies, hot-melt construction modified asphalt waterproofing membranes will cause smoke pollution due to their open flame construction, which is harmful to the environment and construction personnel, and is likely to cause fires. Accidents happen, so people hope to develop cold construction waterproof membrane. In response to this change, self-adhesive bitumen waterproofing membranes are becoming more and more popular in the market. However, there are still many problems in the construction and application of self-adhesive asphalt waterproofing membranes....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/03C08L95/00C08L9/08C08L11/02C08L23/22C08K7/06C08K3/04C09D195/00C09D111/02C09D123/22C09D133/00C09D109/06C09D7/61
CPCC08J3/03C08J2395/00C08J2411/02C08J2423/22C08K2003/265C08K2201/011C09D195/00C09D7/61C09D7/70C08L11/02C08L23/22C08L33/00C08L9/06C08L53/02C08K7/06C08K3/046C08K3/346C08K3/26C08K3/34
Inventor 于猛李文志张磊魏晓虎段文锋
Owner BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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