Unlock instant, AI-driven research and patent intelligence for your innovation.

Epoxysilane-modified nano-alumina and polymer cement-based waterproof coatings

A nano-alumina, epoxy silane technology, applied in cement coatings, dyed organosilicon compound treatment, coatings, etc., can solve the problem of uneven dispersion of polymer cement-based waterproof coatings, easy hydrolysis and self-polymerization failure nano-alumina, Easy phase separation and other problems, to achieve the effect of improving mechanical properties and chemical resistance, low cost, and enhancing adhesion

Active Publication Date: 2022-07-26
ASIA CUANON TECH SHANGHAI +1
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The first purpose of the present invention is to provide a kind of epoxy silane modified nano-alumina, to solve the problem of easy hydrolysis and self-polymerization failure when silane coupling agent is added to the liquid material component of waterproof coating in the prior art and the electrode of nano-alumina Easy to agglomerate, resulting in uneven dispersion of polymer cement-based waterproof coatings and easy phase separation of the system

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
  • Epoxysilane-modified nano-alumina and polymer cement-based waterproof coatings
  • Epoxysilane-modified nano-alumina and polymer cement-based waterproof coatings
  • Epoxysilane-modified nano-alumina and polymer cement-based waterproof coatings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0120] This embodiment provides an epoxy silane-modified nano-alumina. The specific preparation method is as follows: in a 100ml beaker, add 30ml of a mixed solution of absolute ethanol and deionized water (the mass ratio of ethanol to water is 9:1), and then Weigh 0.4 g of epoxysilane into the solution, adjust the pH value to 3.8 with dilute hydrochloric acid, and stand at (23±2)° C. for 45 min. In a 1L three-necked flask, add 150mL of a mixed solution of absolute ethanol and deionized water (the mass ratio of ethanol and water is 9:1), connect a reflux condenser, and slowly add 20g of nano-alumina while stirring. At this time, the stirring speed is controlled at 120r / min, the temperature is controlled at 25 ℃, so that the nano-alumina is fully dispersed in the solution. After uniform dispersion, the stirring rate was increased to 200 r / min, the temperature was increased to 85 °C, the above epoxysilane solution was added, and then the pH was adjusted to 3.8 with dilute hydroc...

Embodiment 2

[0122] This embodiment provides an epoxy silane-modified nano-alumina, which is different from Example 1 in that the amount of epoxy silane added is 0.8 g, and the rest of the methods and steps are the same as those in Example 1, which will not be repeated here. .

Embodiment 3

[0124] This embodiment provides an epoxy silane-modified nano-alumina, which is different from Embodiment 1 in that the amount of epoxy silane added is 1.2 g, and the rest of the methods and steps are the same as those in Embodiment 1, which will not be repeated here. .

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 provides epoxy silane-modified nano-alumina and polymer cement-based waterproof coatings, in particular to the technical field of waterproof coatings. Epoxysilane-modified nano-alumina is mainly obtained by modifying nano-alumina by epoxysilane. The mass ratio of epoxy silane to nano-alumina is 2‑12:100. The polymer cement-based waterproof coating includes A component and B component; A component includes nitrile carboxyl modified styrene-butadiene latex, and B component includes epoxy silane modified nano-alumina. The polymer cement-based waterproof coating provided by the present invention can solve the problems of low bonding strength of the coating, large strength loss, separation of the waterproof layer from the base layer or the waterproof layer itself caused by the water-intolerant and high water absorption rate of the waterproof film in a water-immersed or high-humidity environment. The problem of damage, while meeting the EC1plus environmental protection certification of the German GEV Association, comprehensively guarantees the safety of the waterproof system of the building structure.

Description

technical field [0001] The invention relates to the technical field of waterproof coatings, in particular to an epoxy silane-modified nano-alumina and polymer cement-based waterproof coatings. Background technique [0002] At present, the common polymer cement-based waterproof coatings on the market have problems of high odor and high TVOC emission in actual use, and cannot meet the EC1plus environmental protection certification requirements of the German GEV Association. Moreover, due to the huge difference between the environmental conditions of the polymer cement-based waterproof coating and the standard test conditions specified in the national standard (23±2°C, 50±10% humidity), its performance is greatly reduced. Under long-term water immersion or high-humidity environment, polymer cement-based waterproof coatings will have problems such as low bond strength, large strength loss, separation of waterproof layer from base layer or self-destruction of waterproof layer due...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/40C09C3/12C09D1/08C09D7/62C09D7/65
CPCC09C1/407C09C3/12C09D1/08C09D7/62C09D7/65C01P2006/22
Inventor 张超常英李金钟其他发明人请求不公开姓名
Owner ASIA CUANON TECH SHANGHAI