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Nanometer mildewproof sealing neutral silicone resin

A silicone sealant, anti-mildew technology, used in adhesives, other chemical processes, chemical instruments and methods, etc., can solve the problems of lack of anti-mildew function, toxicity of anti-mildew agents, human health hazards, etc., to improve indoor air. High quality, fast vulcanization, no toxic and side effects

Active Publication Date: 2008-11-05
GUANGDONG SANVO CHEM IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, many silicone sealants do not have the anti-mildew function, and it is easy to "moldy and black" after a period of use
It is very necessary to add antifungal agent to silicone sealant to prevent the growth of mold, but the traditional antifungal agent itself has certain toxicity, especially when used in the kitchen, it is easy to cause harm to human health

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Add 100 kg of α, ω-dihydroxy polydimethylsiloxane and 12 kg of fumed silicon dioxide into the planetary mixer, vacuumize, the vacuum degree is 0.09MPa, the speed is 35rpm, and after stirring for 60 minutes, add 50 kg of active calcium carbonate , 2 kg of carbon black, heated to 100 ° C, vacuumed, vacuum degree 0.09 MPa, stirred for 60 minutes, then added 14 kg of methyl triethoxysilane, 4 kg of γ-chloropropyl triethoxy silane, tetraiso 0.5 kg of propyl titanate, 0.3 kg of bis(acetylacetonate) diisopropyl titanate, 0.1 kg of nano-silver particles, 1.2 kg of negative ion coating additive catalyst type, and react for 90 minutes at a vacuum of 0.09MPa and a rotating speed of 35rpm , to prepare nano mildew-proof neutral silicone sealant.

Embodiment 2

[0032] Add 110 kg of α, ω-dihydroxy polydimethylsiloxane and 10 kg of fumed silica into the planetary mixer, vacuumize to a vacuum degree of 0.09 MPa, and rotate at a speed of 35 rpm. After stirring for 60 minutes, add 60 kg of activated calcium carbonate , 4 kg of titanium dioxide, heated to 100 ° C, vacuumed, vacuum degree 0.09 MPa, stirred for 60 minutes, then added 13.5 kg of methyl triethoxysilane, 5 kg of γ-chloropropyl triethoxy silane, tetraiso 0.6 kg of propyl titanate, 0.4 kg of bis(acetylacetonate) diisopropyl titanate, 0.2 kg of nano-silver particles, 1.5 kg of negative ion coating additive catalyst type, and react for 90 minutes at a vacuum of 0.09MPa and a rotating speed of 35rpm , to prepare nano mildew-proof neutral silicone sealant.

Embodiment 3

[0034] Add 90 kg of α, ω-dihydroxy polydimethylsiloxane and 15 kg of fumed silicon dioxide into the planetary mixer, vacuumize, the vacuum degree is 0.09MPa, the speed is 35rpm, and after stirring for 60 minutes, add 30 kg of active calcium carbonate , 5 kg of iron red, heated to 100 ° C, vacuumed, vacuum degree 0.09 MPa, stirred for 60 minutes, then added 11.5 kg of methyl triethoxysilane, 3 kg of γ-chloropropyl triethoxy silane, tetraiso 0.8 kg of propyl titanate, 0.3 kg of bis(acetylacetonate) diisopropyl titanate, 0.05 kg of nano-silver particles, 2.0 kg of negative ion coating additive catalyst type, and reacted for 90 minutes at a vacuum of 0.09MPa and a rotating speed of 35rpm , to prepare nano mildew-proof neutral silicone sealant.

[0035] Names and technical indicators of main raw materials:

[0036] 1. α, ω-Dihydroxypolydimethylsiloxane

[0037] Appearance: Colorless transparent viscous liquid, no mechanical impurities

[0038] Viscosity (25°C, mPa·s): 2000~30000...

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Abstract

The invention discloses a nano-neutral mildew resistant silicone sealant, the formula of which is as follows by weight portion: 90-110 portions of hydroxyl-terminated polysiloxane, 1-20 portions of gas phase silica, 30-60 portions of active calcium carbonate, 2 to 5 portions of dye, 3-15 portions of methyl triethoxy silane, 0.4-2 portions of composite titanic compound, 1-6 portions of Gamma-chloropropyl triethoxy silane, 0.05-0.2 portion of anti-mildew agent, and 0.5-2.5 portions of anion additive. The invention has following advantages: 1. fresh odor by adopting the methyl triethoxy silane as a cross linker; 2. rapid vulcanizing speed by adopting environment protective composite titanic compound as a catalyst; 3. the adding of environment protective anti-mildew agent to improve the durable anti-mildew property of the sealant in humid environment such as a bathroom and a kitchen etc, being environment friendly without side effects to human body; 4. the adding of anion additive which can continuously release anion to improve the quality of indoor air.

Description

technical field [0001] The invention relates to a sealing material for building interior decoration, in particular to a nano-mold anti-mildew neutral silicone sealant. technical background [0002] In recent years, the decoration requirements of residential buildings have become higher and higher, heating facilities have become more and more perfect, and the airtight performance of rooms has been continuously strengthened, and the phenomenon of water vapor accumulation in bathrooms and kitchens is also more common. Cause a large amount of growth of wall and corner mold thereby, have a strong impact on people's health and the improvement of living environment. Especially in the rainy season, water droplets may even condense on indoor glass and wall surfaces, which is more conducive to the reproduction of mold. [0003] At present, there are many types of sealing materials for building interior decoration in the market, and the quality is uneven. The common one is one-compone...

Claims

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Application Information

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IPC IPC(8): C09K3/10C09J183/04
Inventor 陈炳强陈炳耀张意田张国杰陈亮
Owner GUANGDONG SANVO CHEM IND TECH
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