Hydrous silane coupling agent-polyether grafted polysiloxane polymer coating

A technology of silane coupling agent and polysiloxane, which is applied in the field of coatings, can solve the problems of poor hardness, poor compatibility of inorganic interior and exterior wall coatings, easy cracking and falling off, etc., and achieve stable film formation, excellent film appearance and fixation effect Good results

Active Publication Date: 2013-10-23
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the inorganic interior and exterior wall coatings usually use inorganic silicate as the film-forming substance, and the inorganic silicate is usually quartz powder. The advantages of high temperature, aging resistance, rich sources of raw materials, no pollution, and low cost meet the requirements of contemporary building materials for energy saving and environmental protection. However, inorganic silicate has poor water resistance, adhesion, and flexibility after film formation, which leads to inorganic Interior and exterior wall coatings are not washable, have poor hardness, and are easy to cr

Method used

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  • Hydrous silane coupling agent-polyether grafted polysiloxane polymer coating
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  • Hydrous silane coupling agent-polyether grafted polysiloxane polymer coating

Examples

Experimental program
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Example Embodiment

[0036] Example 1: Preparation of aqueous silane coupling agent-polyether grafted polysiloxane polymer coating

[0037] In a three-necked flask equipped with a magnetic stirrer, a thermometer, and a reflux condenser, add 100g of hydrogen-containing silicone oil (M n =2000g / mol), 80g polyether (M n =800g / mol) and 200g toluene, while stirring, purge with nitrogen at 50℃ for 30min, add 0.05gH 2 PtCl 6 , Under the protection of nitrogen, heat up to 110°C for 5h to obtain a polyether grafted polymethylsiloxane solution; add 20g of 3-(acryloxy)propoxypropyltrimethoxysilane dropwise within 1h, continue After reacting for 6 hours, an aqueous silane coupling agent-polyether grafted polysiloxane polymer is obtained.

[0038] Take 100g of potassium silicate aqueous solution with a modulus of 2.9, 5g of the above-prepared aqueous silane coupling agent-polyether grafted polysiloxane polymer, 50g of water, 20g of titanium dioxide, 10g of ferric oxide, 30g of calcium carbonate, Silica 20g, mineral...

Example Embodiment

[0039] Example 2: Preparation of aqueous silane coupling agent-polyether grafted polysiloxane polymer coating

[0040] In a three-necked flask equipped with a magnetic stirrer, a thermometer, and a reflux condenser, add 100g of hydrogen-containing silicone oil (M n =1000g / mol), 120g polyether (M n =500g / mol) and 350g of toluene, while stirring, purging with nitrogen at 80℃ for 30min, adding 0.1gK 2 PtCl 4 , Under the protection of nitrogen, the temperature is raised to 100°C for 8h to obtain a polyether grafted polymethylsiloxane solution; 50g of 3-(acryloxy)propoxypropyltrimethoxysilane is added dropwise within 2h, continue After 8 hours of reaction, an aqueous silane coupling agent-polyether grafted polysiloxane polymer is obtained.

[0041] Take 100g of sodium silicate aqueous solution with a modulus of 2.0, 50g of the above-prepared aqueous silane coupling agent-polyether grafted polysiloxane polymer, 10g of water, 40g of titanium dioxide, 20g of calcium carbonate, and polysilox...

Example Embodiment

[0042] Example 3: Preparation of aqueous silane coupling agent-polyether grafted polysiloxane polymer coating

[0043] In a three-necked flask equipped with a magnetic stirrer, a thermometer, and a reflux condenser, add 100g of hydrogen-containing silicone oil (M n =5000g / mol), 100g polyether (M n =1500g / mol) and 200g cyclohexanone, while stirring, purge with nitrogen at 90℃ for 30min, add 0.5gPt(CH 2 =CHPh) 2 Cl 2 , Under the protection of nitrogen, the temperature is raised to 150°C to react for 3h to obtain a polyether grafted polymethylsiloxane solution; 10g of 3-(acryloxy)propoxypropyltrimethoxysilane is added dropwise within 0.5h, Continue the reaction for 3 hours to obtain an aqueous silane coupling agent-polyether grafted polysiloxane polymer.

[0044] Take the modulus of 3.0 sodium silicate aqueous solution 20g, modulus 2.6 potassium silicate aqueous solution 80g, the above-prepared water-based silane coupling agent-polyether graft polysiloxane polymer 20g, water 100g, tita...

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Abstract

The invention belongs to the field of coatings, and discloses a hydrous silane coupling agent-polyether grafted polysiloxane polymer coating. The hydrous silane coupling agent-polyether grafted polysiloxane polymer coating comprises the following components in parts by weight: 100 parts of inorganic silicate water solutions, 1-50 parts of hydrous silane coupling agent-polyether grafted polysiloxane polymers, 10-100 parts of water, 0-40 parts of titanium dioxide, 0-40 parts of pigments, 10-50 parts of calcium carbonate, 0-50 parts of silicon dioxide, 0.05-5 parts of defoaming agents, 0.05-5 parts of dispersing agents, 0.05-5 parts of wetting agents, 0.05-5 parts of thickening agents, 0.05-5 parts of anti-freeze agents and 0.1-10 parts of film-forming auxiliary agents. The hydrous silane coupling agent-polyether grafted polysiloxane polymer coating disclosed by the invention has the advantages of abrasion resistance, acid resistance, alkali resistance (without bubbles for 168 hours), easiness for construction, good fixation effect, film-forming stability, excellent film-forming appearance, and the like and is suitable for inner and outer walls.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to an aqueous silane coupling agent-polyether grafted polysiloxane polymer coating. Background technique [0002] Inorganic coatings mainly refer to coatings prepared by using silicate and phosphate compounds as binders and adding various pigments, fillers, additives, and curing agents. According to the film-forming substances, it is mainly divided into inorganic silicate coatings, silica sol coatings, and phosphate coatings. Among them, the inorganic interior and exterior wall coatings usually use inorganic silicate as the film-forming substance, and the inorganic silicate is usually quartz powder. The advantages of high temperature, aging resistance, rich sources of raw materials, no pollution, and low cost meet the requirements of contemporary building materials for energy saving and environmental protection. However, inorganic silicate has poor water resistance, adhesion, and flexibilit...

Claims

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Application Information

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IPC IPC(8): C04B28/26C08G81/00
Inventor 刘伟区王政芳罗广建陈海生
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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