Preparation method of silicon-acrylic emulsion capable of being used for preparing polymer cement-based waterproof coating

A waterproof coating, cement-based technology, applied in the direction of cement coatings, coatings, etc., can solve problems such as water resistance and other comprehensive properties that are difficult to meet the above requirements.

Active Publication Date: 2021-05-28
江苏雨中情防水材料有限责任公司
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the promulgation of the general specification for waterproofing of buildings and municipal engineering, it puts forward clear regulations on the working life of engineering waterproof design, which puts forward stricter requirements on the water resistance of waterproof materials. Currently, the acrylic emulsion commonly used in the market It is difficult to meet the above requirements in terms of comprehensive properties such as polymer cement waterproof coating water resistance. In order to meet the continuous improvement of people's requirements for building waterproofing, it is necessary to develop emulsions that can be used to prepare water resistance and other comprehensive properties.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of silicon-acrylic emulsion capable of being used for preparing polymer cement-based waterproof coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] First, add 0.2 parts of allyloxy nonylphenol polyoxyethylene ether, 0.7 parts of allyloxy nonylphenol polyoxyethylene ether ammonium sulfate into the reactor, anion / nonionic polymerizable emulsifier, 56 parts After the water is stirred evenly, slowly add 10 parts of methacrylic acid and 5 parts of ethyl methacrylate, heat up while stirring, and react at 50°C for 30 minutes to obtain a stable milky white pre-emulsion; adjust the pH value with a pH regulator To 7.5±0.1, heat up to 80°C, then add 1 / 3 of the initiator aqueous solution consisting of 0.5 parts of ammonium persulfate and 16 parts of water dropwise, and the water-soluble initiator aqueous solution of the mixed liquid, and react for a certain period of time to nucleate, Obtain a blue seed emulsion; Slowly add 23 parts of methacrylic acid, 6 parts of ethyl methacrylate, 11 parts of mixed monomers composed of hydroxypropyl acrylate, and 0.5 parts of allyloxynonylphenol Anionic / nonionic polymerizable emulsifier com...

Embodiment 2

[0024] First, add 0.3 parts of allyloxy nonylphenol polyoxyethylene ether, 0.6 parts of allyloxy nonylphenol polyoxyethylene ether ammonium sulfate into the reactor, anion / nonionic polymerizable emulsifier, 56 parts After the water is stirred evenly, slowly add 9 parts of methacrylic acid and 3 parts of ethyl methacrylate, heat up while stirring, and react at 50°C for 30 minutes to obtain a stable milky white pre-emulsion; adjust the pH value with a pH regulator To 7.5±0.1, heat up to 80°C, then add 1 / 3 of the initiator aqueous solution consisting of 0.5 parts of ammonium persulfate and 16 parts of water dropwise, and the water-soluble initiator aqueous solution of the mixed liquid, and react for a certain period of time to nucleate, Obtain blue seed emulsion; Slowly add 24 parts of methacrylic acid, 10 parts of ethyl methacrylate, 8 parts of mixed monomers of hydroxypropyl acrylate, 0.6 parts of allyloxynonylphenol Anionic / nonionic polymerizable emulsifier composed of polyoxy...

Embodiment 3

[0028] First, add 0.3 parts of allyloxy nonylphenol polyoxyethylene ether, 0.5 parts of allyloxy nonylphenol polyoxyethylene ether ammonium sulfate into the reactor, anion / nonionic polymerizable emulsifier, 54 parts After the water is stirred evenly, slowly add 11 parts of methacrylic acid and 4 parts of ethyl methacrylate, heat up while stirring, and react at 50°C for 30 minutes to obtain a stable milky white pre-emulsion; adjust the pH value with a pH regulator To 7.5±0.1, heat up to 80°C, then add 1 / 3 of the initiator aqueous solution consisting of 0.5 parts of ammonium persulfate and 16 parts of water dropwise, and the water-soluble initiator aqueous solution of the mixed liquid, and react for a certain period of time to nucleate, Obtain a blue seed emulsion; Slowly add 22 parts of methacrylic acid, 7 parts of ethyl methacrylate, 12 parts of mixed monomers composed of hydroxypropyl acrylate, and 0.4 parts of allyloxynonylphenol Polyoxyethylene ether, 1.4 parts of anion / non...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a preparation method of a silicon-acrylic emulsion capable of being used for preparing a polymer cement-based waterproof coating. The method comprises the following steps: by adopting an emulsion polymerization method, taking a vinyl monomer, a vinyl-containing functional organic silicon monomer and the like as comonomers, dropwise adding an initiator by virtue of a polymerizable emulsifier and mechanical stirring to enable the monomers to be polymerized and nucleated in water, continuously dropwise adding the initiator and the residual monomers to carry out double-bond free radical polymerization, finally carrying out ice-water bath quenching reaction, and adjusting the pH value to obtain the silicon-acrylic emulsion with the core-shell structure. According to the polymer cement-based waterproof coating prepared from the silicon-acrylic emulsion, the water resistance and the mechanical property of the waterproof coating can be remarkably improved, in addition, due to the fact that silicon-oxygen bonds on a molecular structure are neatly arranged towards the outer layer, the coating has excellent hydrophobicity and air and moisture permeability, and the problems of bulging and falling during construction on a wet base plane are solved.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a method for preparing a silicon-acrylic emulsion that can be used for preparing polymer cement-based waterproof coatings. [0002] technical background [0003] With the promulgation of the general specification for waterproofing of buildings and municipal engineering, it puts forward clear regulations on the working life of engineering waterproof design, which puts forward stricter requirements on the water resistance of waterproof materials. Currently, the acrylic emulsion commonly used in the market The comprehensive properties such as water resistance of polymer cement waterproof coatings are difficult to meet the above requirements. In order to meet the continuous improvement of people's requirements for building waterproofing, it is necessary to develop emulsions that can be used to prepare water resistance and other comprehensive properties. Content...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08F220/06C08F220/18C08F220/20C08F230/08C08F216/14C08F2/26C08F2/30C09D133/02C09D7/61C09D1/08
CPCC08F220/06C09D143/04C09D7/61C09D1/08C08K2003/265C08F220/1802C08F220/20C08F230/085C08F216/1433C08F216/1475C08K3/26C08K3/36C08K3/34
Inventor 李晴龙耿进玉李东
Owner 江苏雨中情防水材料有限责任公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap