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Mildewproof silicone sealant and preparation method thereof

A silicone sealant and anti-mildew technology, used in adhesives, non-polymer adhesive additives, adhesive additives, etc., can solve the problems of high cost, poor anti-mildew effect, high hardness of epoxy resin, etc., and achieve displacement Moderate ability, long-lasting anti-mildew effect and excellent adhesion

Active Publication Date: 2021-10-12
广东三和控股有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the Chinese patent application publication number: CN103773308 mainly uses high-efficiency, environmentally friendly organic fungicide antifungal agent and zinc-loaded zeolite inorganic antibacterial antifungal agent with porous structure. As a result, although a certain anti-mildew effect has been achieved, if the loose structure and fragile surface of the silicone rubber surface are changed, bacteria, mold and other microorganisms will invade the surface, and a very long-lasting anti-mildew effect cannot be achieved.
Application publication number: CN105086907.A adopts a system completely different from silicone structural adhesives, which overcomes the defect of poor anti-mildew effect of traditional anti-mildew silicone sealants. After curing, the product has a brightness like ceramic glaze, which greatly improves Anti-mildew effect, but this invention is an epoxy resin formula system, which does not belong to the application field of silicone glue, and the hardness of epoxy resin is too high (>90A), resulting in damage to the wall or degumming at the joint due to insufficient displacement force , and the high cost of the epoxy resin formulation system, inconvenient two-component construction and other defects, rarely used in the market
Apply for CN101298550A, add environment-friendly nano-silver particle high-efficiency mildew-proof agent and anion paint additive medium in the formula, the environment-friendly nano-silver particle high-efficiency mildew-proof agent and negative-ion paint additive medium used in this invention have high cost, and can not last mildew proof and other defects

Method used

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  • Mildewproof silicone sealant and preparation method thereof
  • Mildewproof silicone sealant and preparation method thereof
  • Mildewproof silicone sealant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (a) Coal ash modification treatment: first ground the modified pulverity ash with purity ≥99% Ai2O3 ball and purity ≥99% SiO2 square block, and sieve 5 μm or less with fly ash with gas flow sieving, and then The rotary permanent magnet removal of the iron ion in powder, and modified according to 0.1 to 0.2% γ-aminopropyltriethoxysilane and 0.2 to 0.5% octadanoic acid, control particle size ≤ 5 μm, whiteness ≥ 88%, iron ion content is ≤0.01%.

[0024] (b) Preparation of mildew silicone sealant: 26.74 parts of dihydroxy polysiloxane, 25 parts of acrylic acid modified silicone resin, 40 modified pulse gray, 3 copies of titanium dioxide, in the material fluid temperature at 120 ~ 150 ° C , The vacuum requires -0.08MPa ~ -0.1MPa, dehydration 3 to 5 h, the cooling material temperature is below 50 ° C, and then adds 4 of Tetracycline Qalani, 2,2'-Di Sulfur Double. (N-methylbenzamide) 0.2 parts, 3.5 parts of methyl tributyl oxime silane, 0.5 parts of vinyl tributtyzine silane, in v...

Embodiment 2

[0026] (a) Coal ash modification treatment: first ground the modified pulverity ash with purity ≥99% Ai2O3 ball and purity ≥99% SiO2 square block, and sieve 5 μm or less with fly ash with gas flow sieving, and then The rotary permanent magnet removal of the iron ion in powder, and modified according to 0.1 to 0.2% γ-aminopropyltriethoxysilane and 0.2 to 0.5% octadanoic acid, control particle size ≤ 5 μm, whiteness ≥ 88%, iron ion content is ≤0.01%.

[0027] (b) Antiofillet silicone sealing gum Preparation: 29.84 parts of dihydroxy polysiloxane, 23 of acrylic modified silicone resin, 39 copies of modified fly ash, 2.3 parts of titanium dioxide, in the material fluid temperature at 120 ~ 150 ° C , The vacuum requires -0.08MPa ~ -0.1MPa, dehydrated 3 to 5 h, the cooling material temperature is below 50 ° C, then adds 0.28 quadramidal quadraminated Qiarum, 2,2'-disulfide double (N-methylbenzamide) 0.3 parts, 3.5 parts of methyl tributyl oxime silane, 1.0 parts of propyl tributone oxim...

Embodiment 3

[0029] (a) Coal ash modification treatment: first ground the modified pulverity ash with purity ≥99% Ai2O3 ball and purity ≥99% SiO2 square block, and sieve 5 μm or less with fly ash with gas flow sieving, and then The rotary permanent magnet removal of the iron ion in powder, and modified according to 0.1 to 0.2% γ-aminopropyltriethoxysilane and 0.2 to 0.5% octadanoic acid, control particle size ≤ 5 μm, whiteness ≥ 88%, iron ion content ≤ 0.01%;

[0030] (b) Preparation of mildew silicone sealant: 33.06 parts of dihydroxy polysiloxane, 22 acrylic modified silicone resins, 37 modified fly ash, 1.8 parts of titanium dioxide, and in the material fluid temperature at 120 ~ 150 ° C , The vacuum requires -0.08MPa ~ -0.1MPa, dehydrated 3 to 5 h, the cooling material temperature is below 50 ° C, and then the tetramethyl dioxide Qalan is 0.24, 2, 2'-di sulfur double. (N-methylbenzamide) 0.4 parts, 3.5 parts of methyl tributyl oxime silane, 1.2 parts of tetrabutyl silane, in vacuum -0.08 M...

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Abstract

The invention discloses a mildewproof silicone sealant and a preparation method thereof. The mildewproof silicone sealant is characterized by comprising the following main components: dihydroxy polysiloxane, epoxy group-containing organosilicon modified resin, modified fly ash, a whitening agent, a mildewproof agent, a cross-linking agent, a coupling agent and a catalyst. The invention has the advantages that 1, waste fly ash discharged from a power plant has the advantage of long-lasting no mold growth due to high-temperature carbonization, the fly ash is ground by AI2O3 ball blocks with the purity of more than or equal to 99% and SiO2 square blocks with the purity of more than or equal to 99%, powder with the size of less than 5m is screened out by an airflow sieve, iron ions in the powder are removed by a rotary permanent magnet iron remover, then gamma-aminopropyltriethoxysilane and octadecanoic acid are used for modification, so that the modified fly ash has the advantages of high whiteness, no mildew, good reinforcing effect and the like; 2, the epoxy group-containing organosilicon resin is applied to improve the loose structure on the surface of the silicon rubber, so that the surface of a cured rubber mold has real porcelain feeling and mould immersion is prevented; and 3, the prepared product has the advantages of low cost, lasting mildew-proof effect and excellent mechanical property.

Description

[0001] The present invention relates to the field of silicone sealing glue applications, in particular to bonding and receiving sealing in the field of mildew silicone sealing gear. Background technique [0002] With the continuous development of social economy, people's pursuit of life is constantly improving, [0003] The requirements for details and indoor decoration are also increasing, not only require product mechanical performance, but also in terms of appearance, environmental protection, etc. also improved higher requirements. Silicone anti-alkali is superior weather resistance, water resistance, displacement intensity, low cost, etc. to play an increasingly important role in decoration, such as the seam between the stove and the wall, bathroom toilet and wall The seams between the seams, the seams between the bath and the walls, the seams between the toilet and the ground, the seams between the chamber tanks and the walls need to be bonded and sealed with sealants, becaus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/04C09J183/06C09J11/04C09J11/06
CPCC09J183/04C09J11/04C09J11/06C08L2205/02C08K2003/2241C08L83/06C08K13/06C08K9/06C08K9/04C08K7/26C08K3/22C08K5/40C08K5/375
Inventor 陈炳耀彭小琴李世晶
Owner 广东三和控股有限公司
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