High-temperature-resistant ultrapure perfluoroether rubber and preparation method thereof

A technology of perfluoroether rubber and high temperature resistance, which is applied in the field of polymer material preparation, can solve the problems of rubber intolerance to media, less perfluoroether rubber, and small application range, so as to ensure processability, improve high temperature resistance and Excellent mechanical properties and medium resistance

Pending Publication Date: 2022-04-26
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Patent CN 105218985 A discloses a fluorine rubber resistant to high temperature, high pressure and hydrofluoric acid. Although it is resistant to high temperature, it only solves the problem that the rubber on the market is not resistant to medium, but this perfluoroether rubber cannot be used in semiconductors and aerospace. In the field of aviation, the scope of application is small
[0004] Perfluoroether rubber is commonly used in the market for its high temperature and medium resistance characteristics, and there are few further developments of perfluoroether rubber to move towards more advanced fields.

Method used

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  • High-temperature-resistant ultrapure perfluoroether rubber and preparation method thereof

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Effect test

Embodiment 1

[0030] According to the protection method requested by this application, the preparation of high temperature resistant ultra-pure perfluoroether rubber is carried out, and the steps are:

[0031] S1. Weigh 100 parts of perfluoroether rubber, 1 part of dispersant, 10 parts of fumed silica, 1.5 parts of accelerator and 1 part of vulcanizing agent.

[0032] S2. Put the rubber, dispersant, fumed silica, vulcanizing agent and accelerator weighed in S1 into the mill at one time and knead at 40-70°C, preferably 60°C, and knead evenly.

[0033] S3. The mixed rubber prepared in S2 is vulcanized for one stage in a vulcanizing machine, and the vulcanization temperature is 170°C.

[0034] S4. Put the sealing ring prepared in S3 into an oven for two-stage vulcanization. The vulcanization temperature is set at 200°C, 230°C and 250°C respectively, and the obtained samples are marked as M1, M2, and M3.

[0035] S5. Perform a performance test on the prepared sealing ring, and test the compres...

Embodiment 2

[0038] According to the protection method requested by this application, the preparation of high temperature resistant ultra-pure perfluoroether rubber is carried out, and the steps are:

[0039] S1. Weigh 100 parts of perfluoroether rubber, 1 part of dispersant, 10 parts of fumed silica, 2 parts of accelerator and 1 part of vulcanizing agent according to the dosage of the formula.

[0040] S2. Put the rubber, dispersant, fumed silica, vulcanizing agent and accelerator weighed in S1 into the mill at one time and knead at 40-70°C, preferably 60°C, and knead evenly.

[0041] S3. The mixed rubber prepared in S2 is vulcanized for one stage in a vulcanizer, and the vulcanization temperature is set at 170°C.

[0042] S4. Put the sealing ring prepared in S3 into an oven for two-stage vulcanization. The vulcanization temperature is set at 250° C., and the obtained sample is designated as M4.

[0043] S5. Perform a performance test on the prepared sealing ring, and test the compressio...

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Abstract

The invention belongs to the technical field of high polymer material preparation, and particularly relates to high-temperature-resistant ultrapure perfluoroether rubber and a preparation method thereof. The high-temperature-resistant ultrapure perfluoroether rubber is prepared from the following components in parts by mass: 80 to 120 parts of peroxide perfluoroether rubber; less than or equal to 10 parts by mass of a dispersant; 5-25 parts by mass of fumed silica; less than or equal to 10 parts by mass of an accelerant; and less than or equal to 10 parts by mass of a vulcanizing agent. The perfluoroether peroxide rubber used in the invention can resist the temperature of 300 DEG C, and has excellent medium resistance; the fumed silica is adopted to improve the high temperature resistance and mechanical properties of the material, and the dispersant is adopted to ensure the processability of the material; the invention relates to ultra-pure perfluoroether rubber with extremely low metal ion precipitation.

Description

technical field [0001] The invention belongs to the technical field of polymer material preparation, and in particular relates to a high-temperature-resistant ultra-pure perfluoroether rubber and a preparation method thereof. Background technique [0002] Perfluoroether rubber perfluoropolyether rubber is a synthetic elastomer, which has many characteristics such as low temperature resistance of fluoroether oil and solvent resistance of perfluororubber. Its raw rubber is a colorless, odorless and transparent solid at room temperature. Perfluoropolyether is a high-molecular fluorinated polymer that began to appear in the 1960s. It is mainly used as a lubricant in harsh environments such as high oxidation, high corrosion, and high radiation. Compared with traditional fluororubber, perfluoropolyether rubber has a lower brittle temperature, wider use temperature range, more processing options, and its resistance to various solvents is also close to that of perfluororubber. Fluo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/00C08K7/26C08K5/14
CPCC08K7/26C08K5/14C08L2201/08C08L71/00
Inventor 李俊刘一严金辉乐王舜王继昌
Owner WENZHOU UNIVERSITY
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