Fluorine-containing polymer mixing material and method for preparing bulb buffer ball keyway by same

A technology of mixing materials and polymers, applied in the field of automobile suspension arms, can solve the problems of high friction coefficient, poor wear resistance and chemical corrosion resistance, limiting the performance of suspension control arms, etc., to achieve high mechanical strength, high mechanical strength, excellent chemical The effect of stability

Inactive Publication Date: 2013-03-06
浙江国威汽车配件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These materials have a high friction coefficient (POM material to steel has a dynamic friction coefficient of 0.15, and polyamide material to steel has a dynamic friction coefficient of 0.34), and their wear resistance and chemical corrosion resistance are poor. Their basic properties limit the improvement of suspension control arm performance.

Method used

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  • Fluorine-containing polymer mixing material and method for preparing bulb buffer ball keyway by same
  • Fluorine-containing polymer mixing material and method for preparing bulb buffer ball keyway by same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Powder-grade PTFE resin is selected, the filler is surface-modified by KH550 (γ-aminopropyltriethoxysilane) (the amount accounts for 5% of the filler mass), activated, and then mixed with powder-grade PTFE resin at 25- Dry mixing and stirring at 35°C, drying in an oven at 90°C, molding, and sintering and solidification at 350-400°C (heating to above the melting point of polytetrafluoroethylene, keeping it warm for 5-8 hours, and then cooling down to room temperature) . The particle size of the selected powder-grade polytetrafluoroethylene resin is controlled below 50 microns.

[0034] This embodiment lists the ratio relationship between powder grade PTFE resin and 11 kinds of fillers for mixed modification treatment, the mass fraction of powder grade PTFE resin used, the type of filler selected and the surface modification by coupling agent. The used mass parts of the filler after is shown in Table 1:

[0035] The mass parts of powder PTFE resin Type of fi...

Embodiment 2

[0037] Use water-based dispersion grade PTFE resin, the filler is surface-modified by coupling agent A-171 (vinyltrimethoxysilane) (accounting for 10% of the filler mass), activated, and water-based dispersant PTFE resin at 25-35 ° C Mix and stir evenly under the dry method, after drying in an oven at 90 ° C, hydroforming, sintering and solidification at 350-400 ° C (that is, heating to above the melting point of polytetrafluoroethylene, keeping it warm for 5-10 hours, and then cooling to room temperature).

[0038] This example lists the proportioning relationship between water-based dispersion grade PTFE resin and 7 kinds of fillers for mixed modification treatment, the mass fraction of powder grade PTFE resin used, the type of filler selected and the surface modified by coupling agent. The mass parts of the filler after curing are shown in Table 2:

[0039] Table 2

[0040]

Embodiment 3

[0042] Polyvinylidene fluoride PVDF resin powder is selected, and the filler is surface-modified by coupling agent KH-570 (γ-methacryloxypropyltrimethoxysilane) (accounting for 40% of the filler mass). After activation , mixed with PVDF resin powder at 25-35°C in a dry method, dried in an oven at 90°C, extruded, sintered and solidified at 180-200°C (heating to above the melting point of polyvinylidene fluoride, heat preservation 6-8 hours, then cool down to room temperature).

[0043] This example lists the ratio relationship between PCDF resin and 11 kinds of fillers for mixed modification treatment, the mass fraction of powder-grade PVDF resin used, the type of filler selected and the surface modification of the coupling agent. The mass parts of filler are shown in Table 3:

[0044] The mass parts of PVDF resin powder Type of filler The mass fraction of the filler surface modified by the coupling agent 90 glass fiber 10 85 graphite 15 ...

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Abstract

The invention discloses a fluorine-containing polymer mixing material and a method for preparing a bulb buffer ball keyway by the same. The fluorine-containing polymer mixing material is prepared by mixing fluorine-containing polymer resin with filler modified by a coupler, and comprises the materials in parts by mass as follows: 60-99 parts of fluorine-containing polymer resin and 1-40 parts of modified filler. The filler meets the condition that the filler is stably sintered at a temperature above the melting temperature of the resin and the granularity is smaller than or equal to 150 microns; the filler does not absorb moisture; and the filler is not clustered under the sintering condition and is not reacted with the polymer. The coupler accounts for 5-40% of the filler by mass percentage. The material has excellent chemical stability, self-lubricating property, noninflammability, resistance to atmospheric aging and high and low temperature adaptability and the like as well as higher mechanical strength. The hardness can be improved through modification and the material is used to prepare wear-resisting products. The bulb buffer ball keyway is prepared from the material so that a suspension type direction control arm assembly of an automobile with high mechanical strength, good wear-resistance and a long service life is further obtained.

Description

[0001] technical field [0002] The invention relates to a fluorine-containing polymer ball head buffer ball pin seat and a preparation method thereof, which are applied to automobile suspension arms. Background technique [0003] Suspended automobile control arm is an important safety and functional part of the automobile suspension system, and is a key component in the steering transmission mechanism of the automobile. One end of it is connected to the body frame, and the other end is connected to the steering joint of the vehicle. It passes the vertical load through the steering wheel in turn. Knuckles, ball pins, control arms, and shock absorbers are transmitted to the body and frame, while longitudinal force, lateral force, and moment are also transmitted by the steering knuckle, the ball joint of the swing arm of the guiding mechanism, and its function is to buffer the uneven road surface. Impact force to the frame and body, traction acceleration, braking longitudinal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/18C08L27/16C08L27/20C08L27/12C08L75/04C08L33/16C08K9/06C08K9/04
Inventor 宁学君吴广陶慷
Owner 浙江国威汽车配件有限公司
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