Low-temperature-resistant perfluoroether rubber composition as well as preparation method and application thereof

A technology of perfluoroether rubber and low temperature resistance, which is applied in the field of polymer rubber material preparation, and can solve the problems of low temperature resistance and chemical medium resistance of perfluoroether rubber composition at the same time

Active Publication Date: 2021-03-09
SHANGHAI REAL SEALING TECH CO LTD
View PDF7 Cites 2 Cited by
  • 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 perfluoroether rubber composition do not need to be ta

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Low-temperature-resistant perfluoroether rubber composition as well as preparation method and application thereof
  • Low-temperature-resistant perfluoroether rubber composition as well as preparation method and application thereof
  • Low-temperature-resistant perfluoroether rubber composition as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The formula of embodiment 1 low temperature perfluoroether rubber composition

[0028] Table 1 shows the formulations of No. 1 to No. 9 low-temperature perfluoroether rubber compositions. For detailed ratios, please refer to the ratio of each component in the table.

[0029] Table 1 No. 1-9 low-temperature perfluoroether rubber composition formula

[0030]

Embodiment 2

[0031] Performance test of embodiment 2 low temperature perfluoroether rubber composition

[0032] Weigh each component according to the ratio of No. 1 to No. 9 formulations (parts by weight) in Example 1, wrap the perfluoroether rubber and the liquid fluoroelastomer rubber on a double-roll mill, and mix the crosslinking agent and accelerator Auxiliary materials such as carbon black and processing aids are added to the open mill and mixed with rubber, mixed evenly at a roller temperature lower than 80°C and then released into sheets to obtain low-temperature perfluoroether rubber compound. The mixed rubber was molded and vulcanized into a standard rubber test piece at a temperature of 180°C, under the condition of one-stage vulcanization for 10 minutes, and then vulcanized in a second stage at a temperature of 200°C for 4 hours, and the rubber test piece was prepared according to a standard test sample and The performance test was carried out, and the performance data of No. 1...

Embodiment 3

[0046] Embodiment 3 Preparation of low temperature perfluoroether rubber composition

[0047] (1) 90 parts by weight of perfluoroether rubber PFR 94 and 10 parts by weight of liquid fluoroelastomer X-71-906 was masticated evenly on a two-roller mill and covered with rolls, and then 3.1 parts by weight of 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane, 1.5 parts by weight Triallyl isocyanurate, filler carbon black N990 of 10 parts by weight, filler carbon black N550 of 5 parts by weight, processing aid HT290 of 0.9 parts by weight are pre-mixed uniformly, and gradually add in the mill, Mix rubber with auxiliary materials;

[0048] (2) After mixing the rubber with the auxiliary materials, cut the rubber mixture of the rollers 5 times on the left and right, adjust the roller distance of the open mill to the minimum, roll or make triangle bags 10 times, and control the entire mixing time at 15 minutes. Mix the rubber material evenly and then release the sheet to obtain a low-te...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to the technical field of perfluoroether rubber compositions, and discloses a low-temperature-resistant perfluoroether rubber composition as well as a preparation method and application thereof. The composition can be vulcanized and molded into a low-temperature-resistant perfluoroether rubber product. The low-temperature perfluoroether rubber composition comprises 50-100 parts by weight of perfluoroether rubber, 10-50 parts by weight of a liquid fluororubber elastomer, 0.5-3 part by weight of a cross-linking agent, 0-4 parts by weight of an accelerant, 1-30 parts by weight of a filler and 1-3 parts by weight of a processing aid; a rubber product prepared by heating, pressurizing and vulcanizing the composition has excellent low-temperature resistance and high cost performance, and can be widely applied to low-temperature corrosion-resistant environmental conditions in petrochemical industry.

Description

technical field [0001] The invention relates to the preparation of polymer rubber materials, in particular to a low temperature resistant perfluoroether rubber composition and its preparation method and application. Background technique [0002] The molecular chain of perfluoroether rubber (FFKM) does not contain C-H bonds. It is a monomer of tetrafluoroethylene (TFE) and perfluoroalkyl vinyl ether (PAVE) or perfluoroalkoxymethylene vinyl ether (PMOVE). It is a ternary copolymerized elastomer of a vulcanization point monomer, which has excellent chemical resistance and thermal stability similar to polytetrafluoroethylene (PTFE) polymers, and is widely used in aerospace, petrochemical, food, pharmaceutical, and semiconductor industries, etc. . The glass transition temperature (T g ) generally at 0°C, the low-temperature sealing performance is poor, and it cannot meet the requirements of some low-temperature working conditions; the ternary compound of tetrafluoroethylene (TF...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08L27/18C08L71/00C08K13/02C08K3/04C08K5/14C08K5/3492
CPCC08L27/18C08L71/00C08K13/02C08K3/04C08K5/14C08K5/34924
Inventor 李恩军苟文亮李耿褚斌斌
Owner SHANGHAI REAL SEALING TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap