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Dynamically vulcanized fluoroplastic/fluororubber/silicone rubber thermoplastic elastomer and preparation method thereof

A thermoplastic elastomer and fluororubber technology is applied in the field of dynamically vulcanized fluoroplastic/fluororubber/silicone rubber thermoplastic elastomer and its preparation, which can solve problems such as poor low temperature resistance, achieve low processing energy consumption, simple processing technology, good compatibility

Active Publication Date: 2016-03-02
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor low temperature resistance of fluoroplastics and fluororubbers, the use of this thermoplastic polymer composition is limited to a certain extent

Method used

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  • Dynamically vulcanized fluoroplastic/fluororubber/silicone rubber thermoplastic elastomer and preparation method thereof
  • Dynamically vulcanized fluoroplastic/fluororubber/silicone rubber thermoplastic elastomer and preparation method thereof
  • Dynamically vulcanized fluoroplastic/fluororubber/silicone rubber thermoplastic elastomer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Polyvinylidene fluoride was selected as the matrix resin (502, Guangzhou Lichang), silicone rubber was used as general foundation silicone rubber (KE571-U, Japan Shin-Etsu), and fluorine rubber (F2463, Zhonghao Chenguang Chemical Research Institute). First, fluororubber (30g), magnesium oxide (1.5g) and calcium hydroxide (1.5g) were mixed evenly on the open mill, and then mixed with silicone rubber (90g) to make fluororubber silicone rubber compound. Add polyvinylidene fluoride (180g) into the Haake torque rheometer with a temperature of 170°C and a rotor speed of 60r / min, add fluororubber and silicone rubber compound after 6 minutes, and add hydroxyl fluorosilicone oil (3g after mixing for 3 minutes) ), continue mixing for 3 minutes, add vulcanizing agent dicumyl peroxide (0.3 g) and crosslinking aid triallyl isocyanurate (0.3 g) for dynamic vulcanization, continue blending for 6 minutes, and discharge. The samples were crushed into fine and uniform particles with a cr...

Embodiment 2

[0053] Polyperfluoroethylene propylene was selected as the matrix resin (Guangzhou Lichang), silicone rubber was used as general foundation silicone rubber (KE571-U, Japan Shin-Etsu), and fluororubber (F2403, Zhonghao Chenguang Chemical Research Institute). Preparation method: First, mix fluorine rubber (36g) and magnesium oxide (9g) uniformly on an open mill, and then mix them with silicone rubber (24g) to make a fluorine rubber silicone rubber compound. Add polyperfluoroethylene propylene (240g) to the Haake torque rheometer at a temperature of 290°C and a rotor speed of 90r / min, add fluororubber silicone rubber compound after 6 minutes, and add silicone oil (15g) after mixing for 3 minutes , continue mixing for 3 minutes and then add vulcanizing agent 2,5-dimethyl-2,5-di-tert-butylperoxyhexane (DBPMH) (9g), triacryl isocyanurate and triacryl cyanuric acid The ester mixture (15g) was subjected to dynamic vulcanization, continued blending for 6 minutes, and discharged. The s...

Embodiment 3

[0055] Select polyvinylidene fluoride as the matrix resin (502, Lichang, Guangzhou), silicone rubber as the general basic silicone rubber (KE571-U, Japan Shin-Etsu), and fluorine rubber TFE-P-Vdf (200P, Asahi Glass Co., Ltd. Chemical Company) . First, fluororubber (30g), magnesium oxide (MgO) (15g) and calcium oxide (CaO) (7g) are mixed evenly on an open mill, and then mixed with silicone rubber (60g) to make fluororubber and silicone rubber. glue. Add polyvinylidene fluoride (210g) to the Haake torque rheometer at a temperature of 220°C and a rotor speed of 60r / min, add fluororubber silicone rubber compound after 3 minutes, and add fluorine oil (9g) after mixing for 3 minutes After continuing to mix for 3 minutes, add the vulcanizing agent dicumyl peroxide (2g) and N,N‐biscinnamylidene‐1,6‐hexamethylenediamine (3# vulcanizing agent) (1g), and the crosslinking agent triene Propyl isocyanurate (9g) was subjected to dynamic vulcanization, continued blending for 4 minutes, and ...

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Abstract

The invention discloses a dynamic vulcanized fluoroplastic / fluororubber / silicon rubber thermoplastic elastomer and a preparation method thereof. The thermoplastic elastomer comprises the following raw materials in parts by mass: 10-80 parts of fluoroplastic, 5-80 parts of fluororubber, 5-85 parts of silicone rubber, 1-10 parts of acid acceptor, 1-20 parts of interfacial modifier, 0.1-5 parts of cross-linking agent and 0.1-10 parts of cross-linking aid. The preparation method comprises the following steps of: uniformly mixing the fluoroplastic, the fluororubber, the acid acceptor, the silicon rubber and the interfacial modifier at 175-330 DEG C; and adding the cross-linking agent and the cross-linking aid under a high-speed shear condition to carry out dynamic vulcanization on rubber to obtain the thermoplastic elastomer. The fluoroplastic / fluororubber / silicon rubber thermoplastic elastomer has high mechanical strength, has the characteristics of excellent high-temperature and low-temperature resistance, chemical resistance, oil resistance, capability of repeated processing and the like and can be widely applied to the fields of aerospace industry, automobile industry, information and electronics industry, chemical industry, new energy resources, electric power industry, environmental protection and the like.

Description

technical field [0001] The invention relates to a thermoplastic elastomer material, in particular to a dynamically vulcanized fluoroplastic / fluororubber / silicone rubber thermoplastic elastomer and a preparation method thereof. Background technique [0002] In recent years, with the development of rubber products used in aviation, aerospace, ships, automobiles, machinery, chemicals and other fields towards high performance, low energy consumption and long life, natural rubber, styrene-butadiene rubber, neoprene, nitrile rubber, etc. General-purpose rubber can no longer meet the requirements of high temperature resistance, low temperature resistance and oil resistance of new rubber components, so special rubber has increasingly attracted people's attention. [0003] Fluorine atoms are connected to the carbon atoms in the main chain or side chain of the fluororubber molecule. The fluorine atoms have a high electronegativity and have a strong shielding effect on the carbon-carbo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/12C08L27/16C08L27/14C08L27/18C08L83/04C08L83/07C08L83/08C08K13/02C08K3/22C08K5/14C08K3/26C08K3/34C08K3/04C08K3/36
Inventor 陈玉坤王延鹏徐传辉
Owner SOUTH CHINA UNIV OF TECH
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