Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Manufacturing process of polytetrafluoroethylene composite elastic body shim and product thereof

A polytetrafluoroethylene and production method technology, applied in other household appliances, household components, applications, etc., can solve the problems of poor elasticity and strength, insufficient overall use effect, poor sealing performance, etc., and achieve high sealing specific pressure. , Reduce the blowout resistance, reduce the effect of gasket cold flow

Active Publication Date: 2009-04-29
浙江国泰萧星密封材料股份有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this invention is to provide a kind of polytetrafluoroethylene composite elastomer gasket production method and its products, which mainly solve the problem that the existing gaskets in the prior art are made of a single polytetrafluoroethylene, and the elasticity and strength are relatively poor. ; If rubber is added, the two materials are not bonded together, so the overall use effect is not enough to meet the problems of higher pressure and harsher working conditions; the invention also solves the problem that the surface of the existing gasket is smooth, Technical problems such as poor sealing performance

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
  • Manufacturing process of polytetrafluoroethylene composite elastic body shim and product thereof
  • Manufacturing process of polytetrafluoroethylene composite elastic body shim and product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: the step of the production method of polytetrafluoroethylene composite elastomer gasket of the present invention is:

[0027] a. Preparation of mixed rubber. The composition and mass percentage of mixed rubber are: 70% of fluorine rubber, 1.7% of vulcanizing agent, 13.7% of acid absorbing agent, 13.7% of reinforcing agent, and the rest are operating aids;

[0028] b. Pre-press molding under the conditions of temperature 80-90℃ and pressure 15-30Mpa;

[0029] c. Process the PTFE gasket through machine tool cutting, and process the water line 3;

[0030] d, polytetrafluoroethylene and rubber bonding parts are surface-activated with naphthalene sodium treatment agent, naphthalene sodium treatment agent is: naphthalene and sodium are dissolved in a sufficient amount of tetrahydrofuran solution, and the molar ratio of naphthalene to sodium is 1:1;

[0031] e. Apply adhesive to bond the rubber gasket 1 to the PTFE shell 2;

[0032] f. Vulcanization molding und...

Embodiment 2

[0037] Embodiment 2: the step of the production method of polytetrafluoroethylene composite elastomer gasket of the present invention is:

[0038] a. Preparation of mixed rubber. The composition and mass percentage of mixed rubber are: 60% of fluorine rubber, 3% of vulcanizing agent, 15% of acid absorbing agent, 15% of reinforcing agent, and the rest are operating aids;

[0039] b. Pre-press molding under the conditions of temperature 80-90℃ and pressure 15-30Mpa;

[0040] c. Process the PTFE gasket through machine tool cutting, and process the water line 3;

[0041] d, polytetrafluoroethylene and rubber bonding parts are surface-activated with naphthalene sodium treatment agent, naphthalene sodium treatment agent is: naphthalene and sodium are dissolved in a sufficient amount of tetrahydrofuran solution, and the molar ratio of naphthalene to sodium is 1:1;

[0042] e. Apply adhesive to bond the rubber gasket 1 to the PTFE shell 2;

[0043] f. Vulcanization molding under the...

Embodiment 3

[0048] Embodiment 3: the step of the production method of polytetrafluoroethylene composite elastomer gasket of the present invention is:

[0049]a. Preparation of mixed rubber. The composition and mass percentage of mixed rubber are: 50% of fluorine rubber, 1.5% of vulcanizing agent, 10% of acid absorbing agent, 10% of reinforcing agent, and the rest are operating aids;

[0050] b. Pre-press molding under the conditions of temperature 80-90℃ and pressure 15-30Mpa;

[0051] c. Process the PTFE gasket through machine tool cutting, and process the water line 3;

[0052] d, polytetrafluoroethylene and rubber bonded parts carry out surface activation treatment with naphthalene sodium treatment agent, naphthalene sodium treatment agent is: naphthalene and sodium are dissolved in a sufficient amount of tetrahydrofuran solution, and the molar ratio of naphthalene to sodium is 1:1;

[0053] e. Apply adhesive to bond the rubber gasket 1 to the PTFE shell 2;

[0054] f. Vulcanization ...

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

PropertyMeasurementUnit
densityaaaaaaaaaa
tensile strengthaaaaaaaaaa
compression ratioaaaaaaaaaa
Login to View More

Abstract

The invention relates to the production of politef multiple elastic cushion, which mainly solves the issues of poor elasticity and strength of the politef production, with smooth surface and good sealing performance. It uses glue smelting, pre compression forming, machining the politef cushion using lathe machine tools, overall surface activation, applying sticking glue, sticking the rubber cushion and the politef shell, sulfur forming, and trimming to get the final product. The cushion comprises rubber cushion coated with politef shell with several protruding waterlines.

Description

technical field [0001] The invention relates to a sealing gasket and a production method, in particular to a production method of a polytetrafluoroethylene composite elastomer gasket and a product thereof. Background technique [0002] Pipelines, valves, containers and other equipment in the international industry are mostly sealed with a single fluoroplastic (such as polytetrafluoroethylene, polyfluoroethylene propylene), asbestos rubber sheet or silicone rubber as the gasket and gasket made of sealing materials. washer. Gaskets and washers made of asbestos rubber sheets and silicone rubber materials have low strength and are prone to aging. A Chinese patent discloses a method for improving the creep resistance of polytetrafluoroethylene sealing gaskets and the sealing gaskets thereof (publication number: CN 1648189A), which is the first to manufacture polytetrafluoroethylene sheets with better creep resistance material, and then use this sheet to make sealing gaskets, fi...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B29D31/00C08J3/20B29C43/58F16J15/00B29K27/18B29K21/00B29D99/00
Inventor 孙锦龙
Owner 浙江国泰萧星密封材料股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com