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A kind of nanometer water-based stone protective agent and preparation method thereof

A technology of protective agent and nano-water, which is applied in paints containing biocides, antifouling/underwater coatings, coatings, etc., can solve the problems of toxic side effects, high production costs, and inconvenient use, and achieve improved strength and toughness, Guarantees the effect of waterproof and anti-ultraviolet performance

Inactive Publication Date: 2017-01-11
HUAZHONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the high production cost, inconvenient use and toxic and side effects of existing stone protective agents, it is urgent to provide a stone protective agent that can overcome the above-mentioned many shortcomings, has low cost of raw materials, simple production process, no by-products, and does not pollute the environment. , excellent physical and chemical properties, wide range of applications and easy to use

Method used

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  • A kind of nanometer water-based stone protective agent and preparation method thereof

Examples

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Effect test

Embodiment 1

[0025] A nano water-based stone protective agent, which comprises the following components in parts by weight: 70 parts of a silicone-modified polyvinyl alcohol dispersion with a solid content of 20 wt%, 3 parts of nano-silica, 1 part of nano-titanium dioxide, Emulsifier Span - 605 parts.

[0026] The preparation method of nanometer water-based stone protection agent described in the present embodiment, comprises the following steps:

[0027] 1) Dissolve 10g of methyltrimethoxysilane and 40g of polyvinyl alcohol (Mw=5000) in 200g of water, add 0.8g of 98% concentrated sulfuric acid and heat up to 80°C, react for 4h under stirring conditions, and cool to room temperature to obtain a solid content of 20wt% silicone modified polyvinyl alcohol dispersion;

[0028] 2) Weigh 70 g of the silicone-modified polyvinyl alcohol dispersion prepared in step 1), add 3 g of nano-silicon dioxide, 1 g of nano-titanium dioxide, and 5 g of Span-60, and stir at 1000 r / min for 20 min at room tempe...

Embodiment 2

[0030] A nano water-based stone protective agent, which comprises the following components in parts by weight: 80 parts of a silicone-modified polyvinyl alcohol dispersion with a solid content of 40 wt%, 5 parts of nano silicon dioxide, 3 parts of nano titanium dioxide, Emulsifier OP-105 parts, emulsifier Span-605 parts.

[0031] The preparation method of nanometer water-based stone protection agent described in the present embodiment, comprises the following steps:

[0032] 1) Dissolve 5g of methyltrimethoxysilane, 5g of tetramethoxysilane and 90g of polyvinyl alcohol (Mw=50000) in 150g of water, add 7.2g of 38% concentrated hydrochloric acid and heat up to 100°C, and react for 6h under stirring conditions , cooled to room temperature to obtain a silicone-modified polyvinyl alcohol dispersion with a solid content of about 40 wt %;

[0033] 2) Weigh 80 g of the silicone-modified polyvinyl alcohol dispersion prepared in step 1), add 5 g of nano-silicon dioxide, 3 g of nano-tit...

Embodiment 3

[0035] A nano water-based stone protective agent, which comprises the following components in parts by weight: 75 parts of organic silicon-modified polyvinyl alcohol dispersion liquid with a solid content of 30 wt%, 4 parts of nano silicon dioxide, 2 parts of nano titanium dioxide, Emulsifier Span - 806 parts.

[0036] The preparation method of nanometer water-based stone protection agent described in the present embodiment, comprises the following steps:

[0037] 1) Dissolve 10g of vinyltrimethoxysilane and 50g of polyvinyl alcohol (Mw=50000) in 140g of water, add 2.5g of 36% concentrated hydrochloric acid and heat up to 90°C, react for 6h under stirring conditions, and cool to room temperature to obtain a solid content of about 30% silicone modified polyvinyl alcohol dispersion;

[0038] 2) Weigh 75g of the silicone-modified polyvinyl alcohol dispersion prepared in step 1), add 4g of nano-silicon dioxide, 2g of nano-titanium dioxide and 6g of Span-80, and stir for 30min at ...

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Abstract

The invention discloses a water-based stone nano-protector. The water-based stone nano-protector is prepared from the following components in parts by weight: 70-80 parts of organic silicon modified polyvinyl alcohol dispersion liquid, 3-5 parts of nano-silicon dioxide, 1-3 parts of nano-titanium dioxide and 5-10 parts of emulsifier. The water-based stone nano-protector is a nano-protection material which is good in effective component penetrating quality and better in adhesive force; the nano-protector is capable of protecting the surface and the interior simultaneously and further improving the interaction of the protector with stone, and therefore, the protection performance is comprehensively improved.

Description

technical field [0001] The invention relates to the technical field of stone protection, in particular to a nano water-based stone protection agent and a preparation method thereof. Background technique [0002] As one of the commonly used building materials, stone is widely used in various buildings. However, under the action of natural factors such as sunshine, weathering and acid rain erosion, stone will be diseased, decomposed and fragmented, which will seriously affect the appearance of stone. It is used for the finish color of decorative stone. The damage of stone is generally due to the reaction of the components in the stone with other chemical substances, which causes the loss of components, looseness, damage and reduction of physical properties of the stone, especially the marbles mainly composed of carbonates. The most common example is marble The calcium carbonate in the acid rain reacts with sulfur dioxide, carbon dioxide, etc. in the acid rain, causing the sto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D129/04C09D5/14C09D7/12C04B41/49
CPCC04B41/5041C08K3/22C08K3/36C08K2003/2237C08K2201/011C09D5/14C09D5/16C09D7/61C09D129/04C04B41/4539C04B41/5035C04B41/4905C04B41/46C04B41/4896
Inventor 暴峰高洁韩小兵蓝珍珍刘攀江三峰张旭
Owner HUAZHONG NORMAL UNIV