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Preparing method for high-strength temperature-resistant organic silicon material

A silicone and temperature-resistant technology, which is applied in the field of preparation of silicone materials and high-strength temperature-resistant silicone materials, can solve the problems of poor stability of modified silicone and easy cracks, etc. Effects of hydrolysis change, improvement of strength and temperature resistance

Inactive Publication Date: 2019-07-05
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problems in the prior art, the present invention provides a method for preparing a high-strength temperature-resistant organic silicon material, which solves the problems of poor stability and easy occurrence of cracks in the existing modified organic silicon, and uses volcanic rock as an inorganic filler to utilize The permeability of phenyltrichlorosilane forms a three-dimensional network structure in the porous channels of volcanic rocks, improving the strength and temperature resistance of silicone itself

Method used

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  • Preparing method for high-strength temperature-resistant organic silicon material

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Embodiment 1

[0032] A method for preparing a high-strength temperature-resistant silicone material, comprising the steps of:

[0033] Step 1, add the volcanic stone to absolute ethanol for gradient ultrasonic cleaning, take it out and quickly dry it to obtain clean volcanic stone;

[0034] Step 2, adding clean volcanic stones into the ball mill, and then adding absolute ethanol to carry out ball milling reaction to obtain volcanic stone particles;

[0035] Step 3, adding phenyltrichlorosilane to the diethyl ether solution and stirring at a constant temperature until it is completely dissolved to obtain a diethyl ether solution, then adding distilled water dropwise and stirring evenly, and standing for constant temperature reaction for 2 hours to obtain a phenyltrichlorosilane hydrolyzate;

[0036] Step 4, putting the volcanic stone particles into the phenyltrichlorosilane hydrolyzate, adding a dispersant, stirring evenly, and filtering to obtain pre-coated volcanic stone particles;

[003...

Embodiment 2

[0048] A method for preparing a high-strength temperature-resistant silicone material, comprising the steps of:

[0049] Step 1, add the volcanic stone to absolute ethanol for gradient ultrasonic cleaning, take it out and quickly dry it to obtain clean volcanic stone;

[0050] Step 2, adding clean volcanic stones into the ball mill, and then adding absolute ethanol to carry out ball milling reaction to obtain volcanic stone particles;

[0051] Step 3, adding phenyltrichlorosilane to the diethyl ether solution and stirring at a constant temperature until it is completely dissolved to obtain a diethyl ether solution;

[0052] Step 4, putting the volcanic stone particles into the phenyltrichlorosilane hydrolyzate, adding a dispersant, stirring evenly, and filtering to obtain pre-coated volcanic stone particles;

[0053] Step 5, put the pre-coated volcanic stone particles into the reaction kettle to seal and react for 2 hours, and after releasing the pressure, raise the temperatu...

Embodiment 3

[0064] A method for preparing a high-strength temperature-resistant silicone material, comprising the steps of:

[0065] Step 1, add the volcanic stone to absolute ethanol for gradient ultrasonic cleaning, take it out and quickly dry it to obtain clean volcanic stone;

[0066] Step 2, adding clean volcanic stones into the ball mill, and then adding absolute ethanol to carry out ball milling reaction to obtain volcanic stone particles;

[0067] Step 3, adding phenyltrichlorosilane to the diethyl ether solution and stirring at a constant temperature until it is completely dissolved to obtain a diethyl ether solution, then adding distilled water dropwise and stirring evenly, and standing for constant temperature reaction for 3 hours to obtain a phenyltrichlorosilane hydrolyzate;

[0068] Step 4, putting the volcanic stone particles into the phenyltrichlorosilane hydrolyzate, adding a dispersant, stirring evenly, and filtering to obtain pre-coated volcanic stone particles;

[006...

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Abstract

The invention discloses a preparing method for a high-strength temperature-resistant organic silicon material. The preparing method includes the following steps that 1, vesuvianite is added into absolute ethyl alcohol and is subjected to gradient ultrasonic cleaning, the obtained vesuvianite is taken out to be rapidly dried, and clean vesuvianite is obtained; 2, the clean vesuvianite is added intoa ball grinding mill, then absolute ethyl alcohol is added, a ball-milling reaction is conducted, and vesuvianite particles are obtained; 3, phenyl trichlorosilane is added into a diethyl ether solution, the mixture is stirred at the constant temperature until the phenyl trichlorosilane is completely dissolved, diethyl-ether dissolving liquid is obtained, then distilled water is dropwise added, even stirring is conducted, a standing constant-temperature reaction is conducted for 2 hours to 4 hours, and phenyl trichlorosilane hydrolysate is obtained; 4, the vesuvianite particles are put into the phenyl trichlorosilane hydrolysate, a dispersing agent is added, even stirring is conducted, filtering is conducted, and preplating vesuvianite particles are obtained; 5, the preplating vesuvianiteparticles are put into a reaction kettle and subjected to a sealing reaction for 1 hour to 2 hours, a heating reaction is conducted for 3 hours to 4 hours after pressure relieving, and the organic silicon material is obtained. By means of the preparing method, the problem that existing modified organic silicon is poor in stability and easy to crack is solved.

Description

technical field [0001] The invention belongs to the field of organic silicon, relates to an organic silicon material, in particular to a preparation method of a high-strength temperature-resistant organic silicon material. Background technique [0002] Silicone resin, that is, polyorganosiloxane, usually has a cross-linked network molecular structure and has relatively stable properties at 250°C. Because of its relatively stable heat-resistant properties, silicone resin can be used as insulating paint, impregnating paint, anti-corrosion coating, metal protective coating, waterproof and moisture-proof coating for construction projects, etc. [0003] Silicone resin molecules are mainly bonded by Si-O bonds. Generally, the heat resistance of silicone resin depends on the organic groups connected to silicon atoms. When the silicon atoms are connected to methyl CH3-, the silicone resin will decompose at about 350°C ; and when the silicon atom is connected to a phenyl group, the ...

Claims

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Application Information

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IPC IPC(8): C08G77/06C08K7/26C08L83/04C08L39/06
CPCC08G77/06C08K7/26C08L83/04C08L39/06
Inventor 姚博
Owner SHAOXING UNIVERSITY
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