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

Rubber and polytetrafluoroethylene bonding method

A technology of polytetrafluoroethylene and polytetrafluoroethylene film, which is applied in the bonding field of rubber and polytetrafluoroethylene, can solve the problems of affecting the service life of the product, the combination is not tight enough, and is easy to be corroded, so as to increase the service life, Good bonding effect, not easy to detach

Inactive Publication Date: 2016-01-20
SHANGHAI BEST RING TECH
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Rubber has good elasticity and high-strength extensibility, but it is not resistant to strong acids and alkalis and chemical solvents, and is easily corroded during use, which seriously affects the service life of the product
[0004] At present, a layer of polytetrafluoroethylene film is often connected on the surface of rubber structural parts in the market to prevent strong acids and alkalis and chemical solvents from contacting rubber structural parts, causing chemical corrosion and affecting the life of rubber structural parts
However, since the rubber structural parts and the PTFE membrane are connected in a cooperative manner, they are not bonded together through a reasonable bonding technique, and the combination of the two is not tight enough. Poor leakage and corrosion by fluid, the service life of rubber structural parts cannot be effectively guaranteed

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
  • Rubber and polytetrafluoroethylene bonding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The present invention is a kind of bonding method of rubber and polytetrafluoroethylene, comprises the following steps:

[0015] 1) Treat the surface of one side of the turned PTFE membrane in sodium naphthalene treatment solution to eliminate free ions on the surface of the PTFE membrane and increase the surface roughness, so that the PTFE and rubber can fully glued together;

[0016] 2) Mix the Chemlock 205 primer with toluene or xylene at a weight ratio of 1:1 to dilute the Chemlok 205 primer, and then coat the side surface of the polytetrafluoroethylene film that has been treated with sodium sodium treatment solution. Apply the diluted Chemlock 205 primer, and dry it in a constant temperature oven at 60°C for 30 minutes after the coating is completed;

[0017] 3) Mix Chemrock 252X topcoat with toluene or xylene at a weight ratio of 1:1 to dilute the Chemlok 252X topcoat, and coat the diluted Chemlok 205 base coat after drying Locke 252X topcoat, after coating, dry...

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 discloses a rubber and polytetrafluoroethylene bonding method. The rubber and polytetrafluoroethylene bonding method comprises the following steps of: (1) treating the one-sided surface of a turned polytetrafluoroethylene film in a sodium naphthalene treating fluid so as to eliminate free ions on the surface of the polytetrafluoroethylene film and increase surface roughness; (2) coating the one-sided surface, treated by the sodium naphthalene treating fluid, of the polytetrafluoroethylene film with diluted Chemlok 205 base coat, and after completing coating, carrying out drying for 30 minutes in a thermostatic chamber with the temperature of 60 DEG C; (3) coating the dried Chemlok 205 base coat with diluted Chemlok 252X finishing coat, and after completing coating, carrying out drying for 30 minutes in the thermostatic chamber with the temperature of 60 DEG C or carrying out drying for 2 hours at a normal temperature; and (4) putting the polytetrafluoroethylene film treated in the step (3) in a rubber mold, and carrying out sustained pressurization for 600 seconds at the temperature of 160 DEG C+ / -5 under the pressure of 16+ / -1Mpa so as to enable the rubber and the polytetrafluoroethylene to be tightly bonded in a heat vulcanization process, so that the service life of rubber structural components is prolonged.

Description

technical field [0001] The invention specifically relates to a bonding method of rubber and polytetrafluoroethylene. Background technique [0002] Polytetrafluoroethylene is commonly known as the "Plastic King" in materials. It is used in pump valve diaphragms, electronic valve flat diaphragms and metering pump diaphragms. Corrosive properties of medicines, but it is not easy to bond with other materials. [0003] Rubber has good elasticity and high-strength extensibility, but it is not resistant to strong acids and alkalis and chemical solvents, and is easily corroded during use, which seriously affects the service life of the product. [0004] At present, a layer of polytetrafluoroethylene film is often attached to the surface of rubber structural parts in the market to prevent strong acids and alkalis and chemical solvents from contacting rubber structural parts, causing chemical corrosion and affecting the life of rubber structural parts. However, since the rubber stru...

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): B29C65/52
Inventor 宋永闯潘冲蒋诚奎
Owner SHANGHAI BEST RING TECH
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