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Light aging resistant fluororubber composite material, and preparation method and application thereof

A technology of light-resistant aging and composite materials, applied in the field of laser components, can solve the problems of affecting reliability, low thermal resistance of perfluoroether rubber, poor thermal insulation effect, etc., and achieve the effect of improving thermal resistance, uniform distribution, and ensuring reliability.

Active Publication Date: 2017-07-07
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The thermal resistance of perfluoroether rubber is relatively small, resulting in poor thermal insulation
Components made of perfluoroether rubber will affect the reliability of other surrounding components when they are heated by light and other effects

Method used

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  • Light aging resistant fluororubber composite material, and preparation method and application thereof
  • Light aging resistant fluororubber composite material, and preparation method and application thereof
  • Light aging resistant fluororubber composite material, and preparation method and application thereof

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preparation example Construction

[0050] In the second aspect, the embodiment of the present invention provides a method for preparing the above-mentioned light aging-resistant fluororubber composite material, which specifically includes the following steps:

[0051] Pour the perfluoroether raw rubber into the open mill, and after Botong plastics for 8-15 minutes, add SiO 2 Hollow balls, paraffin, light stabilizer, mixing for 15-20min, then add vulcanizing agent, carry out one-stage vulcanization at 155-165°C for 15-20min, and then carry out second-stage vulcanization at 230-290°C under the protection of nitrogen or inert gas. Segment vulcanization for 28-35 hours to obtain a light-resistant aging fluororubber composite material.

[0052] According to the ratio of each raw material in the light-resistant aging fluororubber composite material in the first aspect, according to the above method in sequence, the raw materials are added into the open mill to prepare the light aging resistant fluororubber composite ...

Embodiment 1

[0075] This embodiment provides a light-aging resistant fluororubber composite material, which includes the following components in parts by mass:

[0076] Perfluoroether raw rubber (model: PFR94, provided by Huale Sealing Technology Development Co., Ltd.) 100 parts, SiO with a particle size of 100nm-2μm 2 5 parts of hollow spheres, 3 parts of vulcanizing agent (among them, 2.3 parts of bisphenol AF, 0.7 part of benzyl triphenylphosphorous chloride), 3 parts of paraffin, hindered amine light stabilizer (model: 944, produced by Germany BASF AG production) 0.4 parts.

[0077] The photoaging-resistant fluororubber composite material is prepared by the following method:

[0078] Put 100 parts of perfluoroether raw rubber on an open mill with a roll distance of 0.1mm for 8 minutes, and then add 5 parts of SiO 2 Mix hollow balls, 3 parts of paraffin, 0.4 parts of hindered amine light stabilizer for 15 minutes, then add 3 parts of vulcanizing agent, carry out one-stage vulcanizatio...

Embodiment 2

[0087] This embodiment provides a light-aging resistant fluororubber composite material, which includes the following components in parts by mass:

[0088] Perfluoroether raw rubber (model: PFR94) 100 parts, SiO with a particle size of 100nm-2μm 2 3 parts of hollow sphere, 2.5 parts of vulcanizing agent (including 2 parts of bisphenol AF, 0.5 part of benzyl triphenylphosphorous chloride), 2 parts of paraffin, 0.2 part of hindered amine light stabilizer (model: 944).

[0089] The photoaging-resistant fluororubber composite material is prepared by the following method:

[0090] After plasticizing 100 parts of perfluoroether raw rubber for 15 minutes on an open mill with a roll distance of 0.3 mm, add 3 parts of SiO 2 Mix hollow balls, 2 parts of paraffin, 0.2 parts of hindered amine light stabilizer for 20 minutes, then add 2.5 parts of vulcanizing agent, carry out one-stage vulcanization at 155°C for 15 minutes, and then carry out two-stage vulcanization at 290°C for 28 hours ...

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Abstract

The invention discloses a light aging resistant fluororubber composite material, and a preparation method and an application thereof, and belongs to the field of laser devices. The light aging resistant fluororubber composite material is prepared by the following components in parts by weight: 100 parts of perfluoroether rubber, 3-5 parts of SiO2 hollow balls with particle sizes of 100nm to 2mu m, 2.5-3 parts of vulcanizing agent, 2-3 parts of paraffin and 0.2-0.4 part of light stabilizer. According to the light aging resistant fluororubber composite material provided by the invention, the SiO2 hollow balls are added to improve the volume of the gas in the fluororubber composite material by means of the property that the heat conductivity coefficient of the gas is relatively small, thereby reducing the heat conductivity coefficient of the fluororubber composite material and improving the heat resistance, and the fluororubber composite material has good heat-insulating property, thereby prolonging the light aging resistance time of the fluororubber composite material and ensuring the working reliability of other elements on the surrounding.

Description

technical field [0001] The invention relates to the field of laser components, in particular to a light aging-resistant fluororubber composite material and its preparation method and application. Background technique [0002] Perfluoroether rubber is composed of tetrafluoroethylene, perfluoroalkyl vinyl ether, and a small amount of third monomer with vulcanization point (such as CF 2 = CFOR f X (X is -COOR, -CN, -OC 6 f 5 etc.)) copolymerized. There are only carbon and fluorine atoms in the main chain of the perfluoroether rubber polymer, and no hydrogen atoms. Due to the large bond energy of the C-F bond (485kJ / mol), and the covalent radius of the fluorine atom is 0.064nm, which is close to half the length of the C-C bond. , so the fluorine atoms can be closely arranged around the carbon atoms, shielding the C-C main chain well, ensuring the stability of the C-C main chain, so that the perfluoroether rubber has excellent high temperature resistance, weather resistance a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/18C08L91/06C08K13/04C08K7/26C08K5/136C08K5/50
CPCC08K2201/003C08L27/18C08L2201/08C08L2203/20C08L91/06C08K13/04C08K7/26C08K5/136C08K5/50
Inventor 戴洁郭磊刘祥彬邢哲
Owner HISENSE VISUAL TECH CO LTD
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