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Low-temperature-resistant fluororubber composition and application thereof

A technology of low temperature resistance and fluorine rubber, applied in the field of polymer rubber materials, can solve the problem that the low temperature resistance and chemical medium resistance of fluorine rubber composition need not be taken into account at the same time.

Active Publication Date: 2021-04-02
SHANGHAI REAL SEALING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the low temperature resistance and chemical medium resistance of the fluororubber composition in the prior art need not be taken into account at the same time, the present invention provides a low temperature resistant fluororubber Composition and its application

Method used

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  • Low-temperature-resistant fluororubber composition and application thereof
  • Low-temperature-resistant fluororubber composition and application thereof
  • Low-temperature-resistant fluororubber composition and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Embodiment 1 low temperature resistant fluororubber composition formula

[0021] Table 1 shows the formulations of No. 1 to No. 8 fluororubber compositions, wherein, the detailed parts by weight of each component in the raw materials are shown in Table 1.

[0022] Table 1 No. 1-8 low-temperature fluororubber composition formula

[0023]

Embodiment 2

[0024] The performance test of embodiment 2 low temperature fluorine rubber composition

[0025] Weigh each component according to No. 1 to No. 8 formulations (parts by weight) in Example 1, wrap fluororubber and liquid fluoroelastomer on a double-roller open mill, and mix crosslinking agent, accelerator, carbon black And auxiliary materials such as processing aids are added to the open mill and mixed with fluororubber, and the roller temperature is lower than 80°C, and the mixture is evenly mixed and flakes are produced to obtain fluororubber compound. Under the condition of 180℃, 10 minutes of one-stage vulcanization, the mixed rubber is molded and vulcanized into a standard rubber test piece at 20MPa, and then second-stage vulcanized at 200℃ for 4 hours, and the fluororubber test piece is made according to the standard test sample. Sample and test, the performance test data results of No. 1-6 fluororubber compositions are shown in Table 2.

[0026] Among them, the test met...

Embodiment 3

[0038] Embodiment 3: Preparation of low temperature resistant fluororubber composition

[0039] (1) 50 parts by weight of fluororubber polymer Viton GLT600S and 50 parts by weight of liquid fluoroelastomer X-70-906 is masticated evenly on a double-roller mill and covered with rolls, and then 1 part by weight of 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane, 1.25 parts by weight Parts of 1,6-bis-(tert-butylperoxycarboxy) hexane, 2 parts by weight of triallyl isocyanurate, 20 parts by weight of filler carbon black N990, 1 part by weight of processing The auxiliary agent HT290 is pre-mixed evenly, and gradually added to the open mill, and all the auxiliary materials are mixed with the fluororubber;

[0040] (2) After mixing the fluorine rubber with the auxiliary materials, cut the rubber mixture wrapped in rolls 5 times on the left and right sides, adjust the roller distance of the open mill to the minimum, roll or make triangular bags 10 times, and control the entire mixing tim...

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Abstract

The invention belongs to the technical field of polymer rubber materials, and discloses a low-temperature-resistant fluororubber composition as well as a preparation method and application thereof. The fluororubber composition is prepared from the following raw materials in parts by weight: 20-100 parts of fluororubber, 20-80 parts of a liquid fluoroelastomer, 0.5-3 part of a cross-linking agent,0-4 parts of an accelerant, 1-30 parts of a filler and 1-3 parts of a processing aid. The composition is heated, pressurized and vulcanized to prepare the rubber composition. The rubber composition isexcellent in low-temperature resistance and chemical medium resistance, and can be widely applied to low-temperature corrosion-resistant environment working conditions in the petrochemical industry.

Description

technical field [0001] The invention relates to polymer rubber materials, in particular to a low-temperature-resistant fluororubber composition and its application. Background technique [0002] Due to the uneven distribution of energy in my country, most of the oil and gas energy is distributed in the central and western regions. In addition, a large number of oil and gas import pipelines enter from the alpine regions in the northeast and northwest of my country, such as the China-Russia Eastern Natural Gas Pipeline Project, etc. The extremely low temperature environment requirements are related. The seal has excellent low-temperature sealing performance, and -46°C or even lower to -55°C becomes the low-temperature requirement index for the seal. A large number of low-temperature application environments in the petrochemical industry require rubber seals to withstand extremely low temperatures and also require excellent chemical resistance. [0003] Patent document 1CN10404...

Claims

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Application Information

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IPC IPC(8): C08L27/16C08L71/00C08K13/02C08K3/04C08K5/14C08K5/3492
CPCC08L27/16C08L71/00C08K2201/014C08K13/02C08K3/04C08K5/14C08K5/34924
Inventor 李恩军苟文亮李耿褚斌斌
Owner SHANGHAI REAL SEALING TECH CO LTD
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