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Single component mildew-proof flame retarded organic silicon sealing agent for machinery and preparation process thereof

A mechanical seal and organosilicon technology, applied in the field of chemical materials, can solve the problems of restricting the development and application of organosilicon materials, lack of anti-mildew ability, and no antibacterial group, etc., to improve antibacterial ability, reduce costs, and reduce raw materials cost effect

Inactive Publication Date: 2007-08-22
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because silicone materials are flammable and not flame retardant; they have no antibacterial groups and have no anti-mildew ability, which limits the development and application of silicone materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] To prepare one-component anti-mold and flame-retardant silicone mechanical sealant, the steps are as follows:

[0039] (1) Surface modification of hexagonal crystal magnesium hydroxide:

[0040] A. Spray 3 parts by weight of a silane coupling agent (aniline methyl triethoxy silane) xylene solution of 50% by weight on 80 parts by weight of hexagonal magnesium hydroxide powder (requires flame retardant The morphology of magnesium hydroxide is flaky hexagonal crystals, the particle size is 1200~1500nm, and the moisture content is less than 0.1% by weight). Stir in a low-speed kneader at room temperature to make it fully mixed. The rotation speed is 60 rpm. For 20 minutes.

[0041] B. Slowly increase the temperature to 90°C, and perform surface modification on the above-mentioned magnesium hydroxide at a stirring speed of 500 rpm for 60 minutes to obtain a surface-modified hexagonal crystal magnesium hydroxide;

[0042] (2) Processing organic silicon base material:

[0043] 5 p...

Embodiment 2

[0052] To prepare one-component anti-mold and flame-retardant silicone mechanical sealant, the steps are as follows:

[0053] (1) Surface modification of hexagonal crystal magnesium hydroxide:

[0054] A. Spray 4 parts by weight of 50% by weight silane coupling agent (aniline methyl triethoxy silane) xylene solution on 90 parts by weight of hexagonal magnesium hydroxide powder (requires flame retardant The morphology of magnesium hydroxide is flaky hexagonal crystals, the particle size is 1100-1400nm, and the moisture content is less than 0.1% by weight). Stir in a low-speed kneader at room temperature to make it fully mixed. The rotation speed is 80 rpm. For 25 minutes;

[0055] B. Slowly raise the temperature to 100°C, and perform surface modification on the above-mentioned magnesium hydroxide at a stirring speed of 550 rpm for 70 minutes to obtain surface-modified hexagonal crystal magnesium hydroxide;

[0056] (2) Processing organic silicon base material:

[0057] 6 parts by w...

Embodiment 3

[0066] To prepare one-component anti-mold and flame-retardant silicone mechanical sealant, the steps are as follows:

[0067] (1) Surface modification of hexagonal crystal magnesium hydroxide:

[0068] A. Spray 4 parts by weight of a silane coupling agent (aniline methyltrimethoxysilane) xylene solution of 50% by weight on 100 parts by weight of hexagonal magnesium hydroxide powder (requires flame retardant hydrogen The morphology of magnesium oxide is flaky hexagonal crystals, the particle size is 1000~1300nm, the moisture content is less than 0.1% by weight), at room temperature, stir in a low-speed kneader to make it fully mixed, the speed is 100 rpm, the time is 30 minutes;

[0069] B. Slowly raise the temperature to 110°C, and perform surface modification on the above-mentioned magnesium hydroxide at a stirring speed of 600 rpm for 80 minutes to obtain a surface-modified hexagonal crystal magnesium hydroxide;

[0070] (2) Processing organic silicon base material:

[0071] 7 p...

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Abstract

The invention disclose mono-component mould proof anti-flaming organosilicon mechanical seal agent and its manufacturing method. Its component and part by weight proportioning are as follows: hexagonal crystal type magnesium hydroxide 20-40, end hydroxyl dimethyl polysiloxane 40-60, 40% weight percentage organosilicon quaternary ammonium salt antibacterial agent alcohol solution 3-6, vapour phase process reinforcing silica 5-7, silane coupler 2-5, and catalyst 2-3. The grain size of the hexagonal crystal type magnesium hydroxide is 1000-1500nm. The water content is lower than 0.1% weight percentage. The viscosity of the end hydroxyl dimethyl polysiloxane is 2000-10000mPa.S. It has the advantages of high flame retardancy, antibiosis, ageing resistance, wide using temperature range, and low cost. It expands organosilicon seal agent using range, and has important meaning in our country mechanism industry.

Description

Technical field [0001] The invention relates to a new type of sealing material, in particular to a single-component anti-mold and flame-retardant organic silicon mechanical sealant and a preparation method thereof, and belongs to the technical field of chemical materials science. Background technique [0002] There are thousands of sealants in our country, and hundreds of sealants are used for mechanical seals in construction machinery, vehicles and various pumps, but they can meet long-term sealing requirements under harsh conditions such as high temperature, high humidity, and high ultraviolet rays. Stable materials are rare. [0003] Organic silicon material is a new type of green and long-lived polymer material. It has strong resistance to high and low temperature, anti-aging and anti-ultraviolet rays, making it an ideal sealing material. One-component organic silicone mechanical sealant is a single-component sealant that combines all the organic silicone material ingredients...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/10C08L83/04C08K3/22
Inventor 刘少杰刘斐刘华飞贾丽王晖刘渊
Owner SHANDONG UNIV