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A kind of chlorinated/epoxy fluorosilicone oil and its application in room temperature vulcanized fluorosilicone rubber

A fluorine-containing silicone oil and epoxy-based technology, applied in the field of fluorosilicone rubber, can solve problems such as slow curing speed, oil resistance, and single curing method

Active Publication Date: 2022-07-12
东莞市雄驰电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the disadvantages of existing room temperature vulcanized silicone rubber, such as single curing method, slow curing speed, need for a catalyst, and lack of oil resistance, the present invention discloses a structure containing water- and oil-repellent fluorocarbon groups, epoxy groups, alkoxy groups and organic compounds. Method for preparing chlorine-containing fluorine-containing silicone oil and method for room temperature vulcanized fluorosilicone rubber based on the silicone oil

Method used

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  • A kind of chlorinated/epoxy fluorosilicone oil and its application in room temperature vulcanized fluorosilicone rubber
  • A kind of chlorinated/epoxy fluorosilicone oil and its application in room temperature vulcanized fluorosilicone rubber
  • A kind of chlorinated/epoxy fluorosilicone oil and its application in room temperature vulcanized fluorosilicone rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Synthesis of chloro / epoxy fluorine-containing silicone oil FPS-1

[0039] In a three-necked flask equipped with a reflux condenser, a thermometer and a stirrer, 100 g of trimethylsilicon-terminated trifluoropropyl hydrogen-containing silicone oil with a Si-H content of about 0.3% and a viscosity of about 100 mPa.s was added in turn. (FPHMS-1, containing Si-H 0.3mol), 53.53g (0.12mol) heptadecafluoro-1-decene (R f17 Vi), 10.26g (0.09mol) allyl glycidyl ether AGE, 11.42g (0.06mol) vinyltriethoxysilane VTES, 4.57g (0.03mol) p-chloromethyl styrene, mechanically stir and mix, Heating to 80°C, adding 100ppm of complex platinum catalyst KP22, holding the reaction at 80°C for 10h, and then decompressing and boiling for 10min at an absolute pressure of 60mmHg and a temperature of 90°C, a total of about 179.78g of colorless, transparent-light Brown slightly turbid liquid, that is, the structure is shown in formula (1), n 2 =0, R = CH 3 , R f =-C 2 H 4 C 8 F 17 , X is ...

Embodiment 2

[0046] (1) Synthesis of chloro / epoxy fluorine-containing silicone oil FPS-2

[0047] In a three-necked flask equipped with a reflux condenser, a thermometer and a stirrer, 100 g of dimethyl hydrogen silicon-terminated poly(trifluoropropyl) with a Si-H content of about 0.05% and a viscosity of about 2000 mPa.s were added in turn. Methyl-co-methylhydrogensiloxane) FPHMS-2 (containing Si-H bond 0.05mol), 14.27g (0.0375mol) tridecafluoro-1-octene (R f13 Vi), 1.65g (0.005mol) Mn=300 allyl polyoxypropylene epoxy ether (AH307030), 0.82g (0.005mol) vinyltrimethoxysilane (VTMS), 0.29g (0.0025mol)2 -Chloroethyl vinyl ether, stir and mix well, heat up to 80°C, then add 500ppm of complex platinum catalyst KP22 and react at 85°C for 4h, the reaction is over, reduce the pressure under the conditions of an absolute pressure of 60mmHg and a temperature of 90°C De-boiling for 10min, a total of about 117.03g of colorless transparent-light brown slightly turbid liquid was obtained, that is, the...

Embodiment 3

[0054] (1) Synthesis of chloro / epoxy fluorine-containing silicone oil FPS-3

[0055] In a three-necked flask equipped with a reflux condenser, a thermometer and a stirrer, 100 g of trimethylsilicon-terminated poly(trifluoropropylmethyl) having a Si-H content of about 0.1% and a viscosity of about 1000 mPa.s was added in turn. Siloxane-co-methylhydrogen siloxane-co-dimethylsiloxane) copolymer (FPHMS-3, containing Si-H bond 0.1mol), 9.71g (0.05mol) pentafluorophenylethylene (R f Vi), 3.55g (0.025mol) glycidyl acrylate (AE), 2.29g (0.015mol) p-chloromethylstyrene, 2.48g (0.01mol) methacryloyloxypropyltrimethoxysilane (KH- 570), mechanically stirred and mixed, heated and heated to 80°C, then added 300ppm of complex platinum catalyst KP22 and reacted at 85°C for 6h, the reaction was completed, and the absolute pressure was 60mmHg and the temperature was 90°C under the conditions of decompression and low boiling for 10min, A total of 118.03g of colorless transparent-light brown sl...

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Abstract

The invention discloses a preparation method of chlorinated / epoxy fluorosilicone oil and its application in room temperature vulcanized fluorosilicone rubber. The chlorinated / epoxy fluorinated silicone oil of the present invention contains epoxy groups, C-Cl bonds and siloxy groups as well as long-chain fluoroalkyl groups in its structure. It adopts trifluoropropyl hydrogen-containing silicone oil and fluoroalkyl alkenyl group. It is prepared by hydrosilation addition reaction of compounds, alkenyl epoxy compounds, alkenyl alkoxysilane and alkenyl chlorine-containing compounds under the action of platinum catalyst. The silicone oil itself has good reactivity, adhesion and water and oil repellency. . When it is used to prepare room temperature vulcanized fluorosilicone rubber, the contact angle of water on the rubber surface can reach 126°, and the volume change rate of the rubber when soaked in gasoline for 48 hours is ≤10%, indicating that the rubber has good water- and oil-repellent effects.

Description

Technical field [0001] The invention belongs to the field of fluorosilicone rubber, and specifically relates to a preparation method of fluorocarbon-based polysiloxane (also known as fluorine-containing silicone oil) containing long-chain fluorocarbon groups, epoxy groups, alkoxy groups and organic chlorine co-modification and the Application of polysiloxane in room temperature vulcanized fluorosilicone rubber. Background technique [0002] As a functional material, fluorosilicone rubber has the unique properties of silicone rubber such as high and low temperature resistance, aging resistance, radiation resistance, UV resistance, electrical insulation, low compression deformation rate, and good elasticity, as well as the unique properties of fluorine rubber. It is resistant to oil, solvents, and saturated steam, so it is widely used in aerospace, deep-sea submarines, large aircraft carriers, oil pipelines and seals for aircraft and automobiles, moisture-proofing of high-end ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/385C08L83/08C08K13/04C08K7/26
CPCC08G77/385C08L83/08C08L2205/025C08K13/04C08K7/26
Inventor 黄灵智杨秀生安秋凤
Owner 东莞市雄驰电子有限公司
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