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Vibration-damping wear-resistant material as well as preparation method and application thereof

A technology of wear-resistant materials and wear-resistant agents, which is applied in the field of vibration-damping and wear-resistant materials and their preparation, can solve the problems of poor corrosion resistance, no lightweight, and low service life, and achieve broad application prospects and facilitate recycling. , good interaction effect

Inactive Publication Date: 2021-03-09
宁海宏德新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problems of this system are: (1) The product is made of metal, with heavy weight, poor corrosion resistance, and poor lightweight effect. For the whole vehicle, there is no advantage of light weight, which leads to increased fuel consumption of the whole vehicle; (2) ) The metal material of the inner ring has friction with the transmission shaft, resulting in a reduction in the service life of the product, and even wear and tear on the shaft, resulting in a decrease in the service life of the product or the metal of the system; In the future, it can no longer be recycled and will have an impact on the environment
In summary, this type of product has problems such as large self-weight, deviation in wear resistance, low overall service life, and high long-term fuel consumption of the vehicle. Claims, even serious quality accidents, have caused relatively large troubles to OEMs

Method used

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  • Vibration-damping wear-resistant material as well as preparation method and application thereof
  • Vibration-damping wear-resistant material as well as preparation method and application thereof

Examples

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preparation example Construction

[0047] The present invention also provides a method for preparing the vibration-damping and wear-resistant material described in the above technical solution, comprising the following steps:

[0048] a) Composite after mixing thermoplastic resin, anti-wear agent, dioctyl phthalate, polytetrafluoroethylene and additives to obtain a vibration-damping and wear-resistant material.

[0049] In the present invention, the thermoplastic resin, anti-wear agent, dioctyl phthalate, polytetrafluoroethylene and additives are the same as those in the above technical solution, and will not be repeated here.

[0050] In the present invention, the compounding process after mixing is preferably carried out with a twin-screw extruder; on this basis, the compounding extrusion processing temperature is preferably 180°C to 240°C, more preferably 190°C to 225°C °C; the composite feeding speed is preferably 30rpm-65rpm, more preferably 35rpm-50rpm; the composite extrusion speed is preferably 30m / min-50...

Embodiment 1

[0066] (1) Raw material ratio:

[0067] Thermoplastic polyurethane (Shore A hardness is 85): parts by mass 90%; oleic acid amide: parts by mass 3%; dioctyl phthalate: parts by mass 3%; polytetrafluoroethylene: parts by mass 3%; antioxidant : 1% by mass.

[0068] (2) Preparation method:

[0069] The above raw materials are compounded into composite materials through a twin-screw extruder according to the ratio requirements; the specific conditions and parameters are as follows:

[0070] Extrusion processing temperature: 190°C; feeding speed: 35rpm; extrusion speed: 40m / min;

[0071] Obtain a vibration-damping and wear-resistant material; integrally form the vibration-damping and wear-resistant material through injection molding and molding to obtain figure 1 Wear-resistant and vibration-damping bushings shown.

[0072] After testing, the basic properties of the vibration-damping and wear-resistant material provided by Example 1 of the present invention are as follows:

[0...

Embodiment 2

[0075] (1) Raw material ratio:

[0076] Thermoplastic polyurethane (Shore A hardness is 75): parts by mass 90%; oleic acid amide: parts by mass 3%; dioctyl phthalate: parts by mass 3%; polytetrafluoroethylene: parts by mass 3%; antioxidant : 1% by mass.

[0077] (2) Preparation method:

[0078] The above raw materials are compounded into composite materials through a twin-screw extruder according to the ratio requirements; the specific conditions and parameters are as follows:

[0079] Extrusion processing temperature: 190°C; feeding speed: 35rpm; extrusion speed: 40m / min;

[0080] A vibration-damping and wear-resistant material is obtained.

[0081] After testing, the basic properties of the vibration-damping and wear-resistant material provided by Example 2 of the present invention are as follows:

[0082] The self-weight is 83g, the tensile strength is 35MPa, the elongation at break is greater than 200%, the Shore A hardness is 75, and the friction coefficient for 45# s...

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Abstract

The invention provides a vibration-damping wear-resistant material as well as a preparation method and application thereof. The vibration-damping wear-resistant material is prepared from the followingraw materials: 85-90 wt% of thermoplastic resin; 2-4 wt% of a wear-resistant agent; 2-4 wt% of dioctyl phthalate; 2-4 wt% of polytetrafluoroethylene; and the balance being auxiliary agents. Comparedwith the prior art, the vibration-damping wear-resistant material provided by the invention adopts components with specific contents, good interaction is realized, and the product has vibration-damping and wear-resistant functions, can replace a metal rubber composite material to be used as a material for manufacturing an automobile vibration-damping system, and is suitable for working conditionsof vibration reduction, friction resistance, corrosion resistance and the like, on the basis of meeting the strength and rigidity requirements. Moreover, the product takes thermoplastic resin as a main raw material, and is light in self weight and convenient to recycle. Experimental results show that the self-weight of the vibration-damping wear-resistant material provided by the invention is lessthan 100 g, the tensile strength is greater than 15 MPa, the elongation at break is greater than 20%, the shore A hardness is 75-95, and the friction coefficient for 45# steel is less than 0.1.

Description

technical field [0001] The invention relates to the technical field of automobile vibration damping systems, and more specifically relates to a vibration damping wear-resistant material and its preparation method and application. Background technique [0002] According to relevant statistics, the world's largest carbon emissions come from automobile emissions. With the shortage of global resources and climate warming, limiting carbon emissions is an effective means to slow down the depletion of global oil energy and the deterioration of the natural ecological environment. Reducing the carbon emissions of automobiles, improving the service life of components, and reducing maintenance costs in the future will be important issues for the future automotive industry. [0003] At present, automobiles use a large number of rubber-metal damping systems to achieve vibration damping and support other parts. Taking large commercial trucks as an example, this type of vehicle uses a la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L27/18C08K5/20C08K5/12C08L77/02
CPCC08L75/04C08L77/02C08L27/18C08K5/20C08K5/12
Inventor 张伟陆逢刘爱学来忠
Owner 宁海宏德新材料科技有限公司