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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 science, can solve the problems of restricting the development and application of organosilicon materials, lack of anti-mildew ability, no antibacterial groups, etc., to improve antibacterial ability, reduce costs, and reduce raw materials. cost effect

Inactive Publication Date: 2006-06-28
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] Prepare a one-component anti-mildew and flame-retardant organic silicon mechanical sealant, the steps are as follows:

[0039] (1) carry out surface modification to hexagonal crystal magnesium hydroxide:

[0040] A. 3 parts by weight of the silane coupling agent (anilinomethyltriethoxysilane) xylene solution of 50% by weight is evenly sprayed on the hexagonal magnesium hydroxide powder of 80 parts by weight (requiring flame retardant The morphology of magnesium hydroxide is flaky hexagonal crystals, the particle size is 1200~1500nm, and the moisture content is lower than 0.1% by weight), at room temperature, stir it in a low-speed kneader to make it fully mixed, and the rotating speed is 60 rpm. for 20 minutes.

[0041] B. Slowly heat up to 90° C., and carry out surface modification to the above-mentioned magnesium hydroxide at a stirring speed of 500 rpm for 60 minutes to obtain surface-modified hexagonal magnesium hydroxide;

[0042] (2) Processing silicone base mat...

Embodiment 2

[0052] Prepare a one-component anti-mildew and flame-retardant organic silicon mechanical sealant, the steps are as follows:

[0053] (1) carry out surface modification to hexagonal crystal magnesium hydroxide:

[0054] A. 4 weight parts of silane coupling agent (anilinomethyltriethoxysilane) xylene solution of 50% by weight are evenly sprayed on the hexagonal magnesium hydroxide powder of 90 weight parts (require flame retardant The appearance of magnesium hydroxide is flaky hexagonal crystal, the particle size is 1100~1400nm, and the moisture content is lower than 0.1% by weight), at room temperature, stir it in a low-speed kneader to make it fully mixed, the rotating speed is 80 rpm, the time for 25 minutes;

[0055] B. Slowly heat up to 100° C., and carry out surface modification to the above-mentioned magnesium hydroxide at a stirring speed of 550 rpm for 70 minutes to obtain surface-modified hexagonal magnesium hydroxide;

[0056] (2) Processing silicone base material:...

Embodiment 3

[0066] Prepare a one-component anti-mildew and flame-retardant organic silicon mechanical sealant, the steps are as follows:

[0067] (1) carry out surface modification to hexagonal crystal magnesium hydroxide:

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

[0069] B. Slowly heat up to 110° C., and carry out surface modification to the above-mentioned magnesium hydroxide at a stirring speed of 600 rpm for 80 minutes to obtain surface-modified hexagonal magnesium hydroxide;

[0070] (2) Processing silicone base mat...

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PUM

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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 novel sealing material, in particular to a single-component anti-mold and flame-retardant organosilicon mechanical sealant and a preparation method thereof, belonging to the technical field of chemical materials science. Background technique [0002] There are thousands of sealants in my country, and there are hundreds of sealants used for mechanical seals of construction machinery, vehicles and various pumps, but they can meet the long-term sealing requirements under harsh conditions such as high temperature, high humidity and high ultraviolet rays. Materials with stable properties are rare. [0003] Silicone material is a new type of green and long-lived polymer material, which is highly resistant to high and low temperature, aging and ultraviolet rays, and is an ideal sealing material. The one-component silicone mechanical sealant is a single-component sealant that is sealed in a metal hose or plastic tube after all the si...

Claims

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Application Information

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