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High-performance cooked adhesive powder for wall rendering and preparation method thereof

A high-performance technology of cooked rubber powder, applied in the field of cooked rubber powder, can solve the problems of poor anti-mildew and moisture-proof performance, easy shrinkage of putty, peeling and blistering, etc., achieve good crack resistance, improve bonding strength, and good adhesion The effect of knot strength

Active Publication Date: 2013-09-25
GUANGZHOU GLORYSTAR CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There have been more than ten years of research on cooked rubber powder in China. A few enterprises have independent production capacity, but the technology is relatively backward, and the product performance is often unstable.
At present, most of the domestic cooked rubber powder is replaced by ordinary modified starch. The disadvantages are low viscosity, poor water retention, low film-forming strength, easy shrinkage, cracking, falling off of putty, poor performance in terms of mildew and moisture resistance, mildew spots and blistering. Phenomenon

Method used

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  • High-performance cooked adhesive powder for wall rendering and preparation method thereof
  • High-performance cooked adhesive powder for wall rendering and preparation method thereof
  • High-performance cooked adhesive powder for wall rendering and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Prepare wall body plaster according to the following steps and use high-performance cooked rubber powder:

[0033] A. Cross-linking and etherification of starch: add 100 parts by weight of starch into the kneading reactor, and add etherifying agent 20 parts by weight of monochloroacetic acid, 1 part by weight of epichlorohydrin and 26 parts by weight of ethanol under stirring. , stirring for 60-70 minutes, and controlling the temperature at 50-60°C to obtain cross-linked and etherified starch;

[0034] B. Grafting, gelatinization, etherification, and activation of starch: Add 15 parts by weight of catalyst sodium hydroxide dropwise to the crosslinked and etherified starch obtained in step A, control the temperature at 50-70°C, and react for 30-40 Minutes later, sequentially add 3 parts by weight of modifier II and 1 part by weight of activator, and continue the reaction for 30 to 40 minutes to obtain grafted, gelatinized, etherified and activated starch;

[0035] C. Hy...

Embodiment 2

[0039] Prepare wall body plaster according to the following steps and use high-performance cooked rubber powder:

[0040] A. Cross-linking and etherification of starch: add 100 parts by weight of starch into the kneading reactor, add etherifying agent 26 parts by weight of monochloroacetic acid, 2 parts by weight of modifier I and 28 parts by weight of ethanol under stirring. Stir for 70-80 minutes, control

[0041] The processing temperature is 50-60°C to obtain cross-linked and etherified starch;

[0042] B. Grafting, gelatinization, etherification, and activation of starch: Add 17 parts by weight of catalyst sodium hydroxide dropwise to the crosslinked and etherified starch obtained in step A, control the temperature at 50-70°C, and react for 40-50 minutes. Minutes later, sequentially add 6 parts by weight of modifier II and 4 parts by weight of activator, and continue to react for 40 to 50 minutes to obtain grafted, gelatinized, etherified and activated starch;

[0043] ...

Embodiment 3

[0047]Prepare wall body plaster according to the following steps and use high-performance cooked rubber powder:

[0048] A. Cross-linking and etherification of starch: Add 100 parts by weight of starch into the kneading reactor, add etherifying agent 30 parts by weight of monochloroacetic acid, 3 parts by weight of modifier I and 30 parts by weight of ethanol under stirring. Stir for 80-90 minutes, and control the temperature at 50-60°C to obtain cross-linked and etherified starch;

[0049] B. Grafting, gelatinization, etherification and activation of starch: Add 20 parts by weight of catalyst sodium hydroxide dropwise to the cross-linked and etherified starch obtained in step A, and control the temperature at 50-70°C for 40-50 minutes. Minutes later, sequentially add 10 parts by weight of modifier II and 5 parts by weight of activator, and continue the reaction for 50 to 60 minutes to obtain grafted, gelatinized, etherified and activated starch;

[0050] C. Hydrolysis reacti...

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Abstract

The invention provides cooked adhesive powder for wall rendering and a preparation method thereof. The cooked adhesive powder comprises the following components in parts by weight: 100 parts of starch, 1-3 parts of modifier I, 3-10 parts of modifier II, 20-30 parts of etherifying agent, 15-20 parts of catalyst, 1-5 parts of activator and 26-30 parts of ethanol, wherein the modifier I is one or two of epichlorohydrin, urea, sodium metapohsphate and phosphorus oxychloride; the modifier II is combination of alkenyl succinic anhydride (ASA), polyacrylamide and epoxy resin. The adhesive powder for wall rendering provided by the invention has the characteristics of excellent comprehensive performance, high viscosity, strong film forming property and good water resistance.

Description

technical field [0001] The invention relates to a building decoration material and a preparation method thereof, in particular to a cooked rubber powder suitable for wall plastering. Background technique [0002] The architectural trend in the world today is developing towards a green and environmentally friendly direction, and the interior wall decoration of buildings is more and more commonly used paint to replace traditional ceramic tiles, wallpaper and other materials to decorate the wall. In my country, with the continuous improvement of people's living standards, the use of architectural coatings to decorate the interior walls of buildings has become more and more widespread. Architectural putty is an important supporting material for architectural coating construction, which not only affects the quality of coating engineering, but also affects the cost of coating engineering. After a period of time, the paint finishes of many buildings appear peeling, cracking, falli...

Claims

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Application Information

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IPC IPC(8): C09D5/34C08B31/00C08B31/12C08F251/00
Inventor 胡新嵩屈哲辉卢海凤曾美婵杨金燕
Owner GUANGZHOU GLORYSTAR CHEM
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