Unlock instant, AI-driven research and patent intelligence for your innovation.

Lip-shaped sealing ring for automobile engine rotating shaft

A lip-shaped sealing ring, automobile engine technology, applied in the field of sealing materials, can solve the problems of short service life, high production cost, complex process, etc., to improve thermal conductivity and gas barrier properties, improve mechanical strength and wear resistance, Simple preparation method

Active Publication Date: 2020-05-19
台州恩普密封件有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This production method is complicated, and two sets of molds are required for two times of vulcanization, resulting in high production costs. At the same time, the adhesion between the cloth skeleton and the lip glue is not good, resulting in unstable product quality and short service life.
In addition, most of the existing sealing rings are made of nitrile rubber. Nitrile rubber has excellent oil resistance and good mechanical properties, but due to the existence of unsaturated double bonds in its molecular chain, its heat resistance, Poor aging resistance; the sealing ring will generate heat under long-term stress, and is prone to aging and damage, while fluororubber has excellent heat resistance, solvent resistance and oil resistance due to the introduction of fluorine atoms into its molecular chain. improved, so it can be used as a sealing material

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
  • Lip-shaped sealing ring for automobile engine rotating shaft
  • Lip-shaped sealing ring for automobile engine rotating shaft

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A lip seal ring for the rotating shaft of an automobile engine, the lip seal ring is composited by a fluororubber system, a melamine formaldehyde resin system and a graphene oxide system;

[0026] The fluororubber system includes the following components in parts by weight: 100 parts of fluororubber, 3.5 parts of diatomaceous earth, 10 parts of magnesium oxide, 2 parts of calcium hydroxide, 5 parts of carbon black, 1.5 parts of bisphenol AF, and 0.5 parts of BPP ;

[0027] The melamine-formaldehyde resin system includes the following components in parts by weight: 20 parts of melamine, 10 parts of paraformaldehyde, 5 parts of formaldehyde solution with a mass fraction of 37%, 3 parts of cellulose sulfonate, and 6 parts of isopropanone;

[0028] The graphene oxide system includes the following components in parts by weight: 1 part of graphene oxide, 10 parts of coupling agent, 5 parts of acetic acid solution with a mass fraction of 66.7%, and 30 parts of methyl ethyl ket...

Embodiment 2

[0040] A preparation method for a lip seal ring for a rotary shaft of an automobile engine, comprising the steps of:

[0041] Step 1: Preparation of graphene oxide system

[0042]Take 40 parts of methyl ethyl ketone and 1.8 parts of graphene oxide, mix them uniformly by ultrasonic, then add 7 parts of formaldehyde solution with a mass fraction of 37% to the mixed solution, continue to mix evenly, add 13 parts of coupling agent, and in an oil bath at 75°C , reacted for 10h, washed with deionized water and vacuum-dried after the reaction to obtain treated graphene oxide;

[0043] Step 2: Preparation of melamine formaldehyde resin system

[0044] Take 25 parts of melamine and 15 parts of paraformaldehyde into the reactor, then add 40 parts of deionized water, heat up to 55 ° C under stirring conditions, add 8 parts of formaldehyde solution with a mass fraction of 37% after mixing and use 20 % sodium hydroxide solution to adjust the pH value, control it at 8~9, then raise the te...

Embodiment 3

[0049] A preparation method for a lip seal ring for a rotary shaft of an automobile engine, comprising the steps of:

[0050] Step 1: Preparation of graphene oxide system

[0051] Take 50 parts of methyl ethyl ketone and 1.5 parts of graphene oxide, mix them uniformly by ultrasonic, then add 10 parts of formaldehyde solution with a mass fraction of 37% to the mixed solution, continue to mix evenly, add 20 parts of coupling agent, and put them in an oil bath at 75°C , reacted for 12h, washed with deionized water and vacuum-dried after the reaction to obtain treated graphene oxide;

[0052] Step 2: Preparation of melamine formaldehyde resin system

[0053] Take 30 parts of melamine and 18 parts of paraformaldehyde into the reactor, then add 50 parts of deionized water, heat up to 55 ° C under stirring conditions, add 10 parts of formaldehyde solution with a mass fraction of 37% after mixing and use 20 % sodium hydroxide solution to adjust the pH value, control it at 8~9, then ...

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 lip-shaped sealing ring for an automobile engine rotating shaft. The lip-shaped sealing ring is composed of a fluororubber system, a melamino-formaldehyde resin system and agraphene oxide system, and is prepared through open milling, extrusion, compression molding vulcanization molding, product post-treatment and other processes. According to the invention, the preparation method of the lip-shaped sealing ring for the automobile engine rotating shaft is simple; the fluororubber material is adopted as the base material of the sealing ring, so that high-temperature resistance and solvent resistance are good; the melamino-formaldehyde resin system is added into the sealing ring, the functionality of the melamino-formaldehyde resin system is high, and the melamino-formaldehyde resin system can have a cross-linking reaction with a filler and a rubber, so that the mechanical strength and the abrasion resistance of the sealing ring are improved; and the added graphene oxide system improves the thermal conductivity and the gas barrier property of the sealing ring, and easily forms a brand-new functional nano composite system with fluororubber and the melamino- formaldehyde resin system, so that the service life of the sealing ring is prolonged.

Description

technical field [0001] The invention relates to the technical field of sealing materials, in particular to a lip-shaped sealing ring for a rotary shaft of an automobile engine. Background technique [0002] The lip seal for the rotating shaft is a common rubber seal, which has the characteristics of good sealing performance, not easy to deform and not easy to loosen and fall off, and has been widely used in the fields of valves and automobile products. The lip-shaped non-metallic sealing ring used at room temperature has good elasticity, and usually does not need too high dimensional accuracy to meet the sealing requirements. [0003] The traditional non-metal skeleton rotating shaft lip seal ring is made of many layers of glued fiber canvas, which is first vulcanized into a semi-finished product with a cloth skeleton in a special mold by lamination and molding, and then combined with the lip glue after cooling. The joint surface is roughened and painted with glue, and fina...

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): C08L27/16C08L61/28C08K13/02C08K3/34C08K3/22C08K3/04
CPCC08L27/16C08L2205/03C08K2201/014C08K2003/222C08K2003/2206C08L61/28C08K13/02C08K3/34C08K3/22C08K3/04C08K3/042
Inventor 陈国忠赵思科林元益
Owner 台州恩普密封件有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com