Preparation method of water-based organosilicone stone protecting agent

A technology of protective agent and organic silicon, which is applied in the field of water-based organic silicon stone protective agent and its preparation, can solve the problems of affecting the efficiency and appearance of coating, high production cost, and long curing time, so as to achieve favorable production efficiency, low cost, The effect of fast curing time

Inactive Publication Date: 2017-06-13
INST OF APPLIED CHEM JIANGXI ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing high-end stone protective agents are solvent-based, but there are problems such as high production cost, inconvenient use and toxic side effects, so water-based is the development direction of stone protective agents
[0004] Methyl silicate is a kind of water-based silicone water repellent, which has long curing time and easy whitening, which affects the finishing efficiency and appearance. Organosilicon waterproofing agent for building materials is a waterproofing agent made of sodium methyl siliconate, silane coupling agent, fatty alcohol polyoxyethylene ether succinate half ester sulfonate, alum, phosphoric acid, polyethylene glycol and water; publication number CN103571327 discloses a method for preparing stone waterproofing agent with methyl silicate, silane coupling agent and polyethylene glycol as raw materials; however, the products of existing water-based technology are used for stone protection, and have not yet overcome methyl The disadvantage of sodium silicate is that the curing time is long. Therefore, the advantages of methyl silicate waterproofing agent are still needed in high-end stone protection to overcome its shortcomings.

Method used

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  • Preparation method of water-based organosilicone stone protecting agent

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Embodiment 1

[0020] A water-based organosilicon stone protective agent, comprising the following components in parts by weight: 75 parts of long-chain alkylsilane-modified methyl silicate sodium salt solution with a solid content of 20 wt%, 5 parts of silica sol, polyethylene 5 parts of alcohol, 5 parts of water-based adhesion promoter.

[0021] The preparation method of water-based organosilicon stone protection agent described in the present embodiment may further comprise the steps:

[0022] 1) Dissolve 10g of n-butyltriethoxysilane and 50g of sodium methyl silicate in 240g of water, stir and dissolve evenly, heat up to 60°C, and react for 2 hours to obtain 20wt% long-chain alkylsilane modified Sodium methyl silicate solution.

[0023] 2) Weigh 75 parts of the long-chain alkylsilane-modified methyl silicate sodium salt solution prepared in step 1) and 5 parts of polyvinyl alcohol, mix and heat to 60°C, after the solution is transparent, keep the temperature for 30 minutes, and then dro...

Embodiment 2

[0025] A water-based organosilicon stone protective agent, which comprises the following components in parts by weight: 50 parts of long-chain alkylsilane-modified potassium methyl silicate solution with a solid content of 40 wt%, 10 parts of silica sol, poly 10 parts of vinyl alcohol, 1 part of water-based adhesion promoter.

[0026] The preparation method of water-based organosilicon stone protection agent described in the present embodiment may further comprise the steps:

[0027] 1) Dissolve 10g of n-octyltrimethoxysilane and 150g of potassium methyl silicate in 240g of water, stir and dissolve evenly, heat up to 90°C, and react for 4 hours to obtain 40wt% long-chain alkylsilane modified Potassium methyl silicate solution.

[0028] 2) Weigh 50 parts of the 40 wt% long-chain alkylsilane-modified potassium methyl silicate solution prepared in step 1) and 10 parts of polyvinyl alcohol, mix and heat to 40°C, after the solution is transparent, keep the temperature for 60 minut...

Embodiment 3

[0030] A water-based organosilicon stone protective agent, which comprises the following components in parts by weight: 60 parts of long-chain alkylsilane-modified methyl silicate sodium salt solution with a solid content of 30 wt%, 8 parts of silica sol, poly Vinyl alcohol 6 parts, water-based adhesion promoter 2 parts.

[0031] The preparation method of water-based organosilicon stone protection agent described in the present embodiment may further comprise the steps:

[0032] 1) Dissolve 10 n-tridecyltrimethoxysilane and 100 g sodium methyl silicate in 256 g water, stir and dissolve evenly, heat up to 80°C, and react for 3 hours to obtain 30 wt% long-chain alkyl silane modified Sodium methyl silicate solution.

[0033] 2) Weigh 60 parts of long-chain alkylsilane-modified methyl silicate sodium salt solution prepared in step 1) and 6 parts of polyvinyl alcohol, mix and heat to 50°C, after the solution is transparent, keep the temperature for 45 minutes, Cool down to room t...

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Abstract

The invention discloses a preparation method of water-based organosilicone stone protecting agent, wherein the protecting agent is prepared from, by weight, 50-75 parts of long-chain alkylsilane modified methyl silicate solution, 5-10 parts of silica sol, 5-10 parts of polyving akohol, 1-5 parts of water-based adhesive promoter. The stone protecting agent takes water as the dispersing agent, and is low in cost, safe and toxic-free; the processed stone is free from the change of appearance and color, and has good penetration performance, strong adhesive force, fast curing, and high dilution ratio; the protecting agent can form protection at the surface and the inner part of the stone, and comprehensively improve the protection performance.

Description

technical field [0001] The invention relates to the technical field of stone protection, in particular to a water-based organosilicon stone protection agent and a preparation method thereof. Background technique [0002] Due to its advantages in decoration and strength, stone is one of the important building materials, and is highly valued and favored by people. Then the porous nature of the stone itself makes the stone vulnerable to the influence of the external environment. Under the action of natural factors such as sunlight, weathering and acid rain erosion, it is prone to disease, decomposition and fragmentation, which seriously affects the beauty and service life of the stone. Therefore, the protection of stone is necessary. [0003] The purpose of protection is to limit the pollution of stone materials and avoid problems such as water spots, stains, and pulverization of stone materials during use. At present, there are many types of stone protective agents in the ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D129/04C09D5/16C09D7/12
CPCC09D4/00C09D5/1687C09D183/04C08L29/04C08K3/36
Inventor 游胜勇戴润英董晓娜陈衍华李玲邹吉勇谌开红陈仕平
Owner INST OF APPLIED CHEM JIANGXI ACAD OF SCI
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