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Special-purpose material of engineering plastic bearing inner core

A technology for engineering plastics and bearings, applied in the field of special materials for engineering plastic bearing inner cores, can solve problems such as difficult production, low friction coefficient, and inability to realize injection molding process, and achieves the goal of ensuring injection molding performance, increasing thermal deformation temperature, and maintaining uniformity. Effect

Inactive Publication Date: 2010-04-21
吴南松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Flat plastic bearings for automobiles require ultra-low friction coefficient and low wear loss under high-load conditions. Traditional PE and HDPE cannot meet the requirements, and ultra-high molecular weight polyethylene is needed to achieve it.
Ultra-high molecular weight polyethylene can meet the conditions of use, but the processing of ultra-high molecular weight polyethylene is not easy to form, the traditional injection molding process cannot be realized, and it is difficult for ordinary small and medium-sized production enterprises to produce

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Ultra-high molecular weight polyethylene 42%, high-density polyethylene 33.5%, comprehensive lubricant 10%, ultra-fine silica 5%, silane coupling agent 5%, organotin 3.5%, dispersant 0.5%, antioxidant 1010 : 0.1%, Antioxidant 168: 0.4%. The material has excellent self-lubricating properties and low wear, and the material has excellent processing performance. The unit is parts by weight, the same below.

Embodiment 2

[0013] Ultra-high molecular weight polyethylene 40.0%, high-density polyethylene 30%, comprehensive lubricant 20%, ultra-fine silica 7.1%, silane coupling agent 1%, organotin 0.5%, dispersant 0.6%, antioxidant 1010 : 0.4%, antioxidant 168: 0.4%. The material has excellent self-lubricating properties and low wear, and the processing performance of the material meets the conditions of ordinary injection molding machines.

Embodiment 3

[0015] Ultra-high molecular weight polyethylene 55%, high-density polyethylene 30%, comprehensive lubricant 5%, ultra-fine silica 6%, silane coupling agent 2%, organotin 1.2%, dispersant 0.4%, antioxidant 1010 : 0.1%, Antioxidant 168: 0.4%. The material has excellent self-lubricating properties and low wear, and the processing performance of the material meets the conditions of ordinary injection molding machines.

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PUM

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Abstract

The invention relates to a material for manufacturing a bearing inner core, in particular to a special-purpose material of an engineering plastic bearing inner core. According to the technical scheme provided by the invention, the special-purpose material of the engineering plastic bearing inner core contains the following ingredients in parts by weight: 35-55 parts of ultra high molecular weight polyethylene, 30-40 parts of high-density polyethylene, 5-20 parts of synthesis lubricant, 5-8 parts of superfine silicon dioxide, 1-5 parts of silane coupling agent, 0.5-3.5 parts of organic tin, 0.4-0.6 part of dispersing agent, 0.1-0.4 part of antioxidant 1010 and 0.1-0.4 part of antioxidant 168. When parts, such as an automotive planer plastic bearing and the like, which need to work under high load condition, are produced by utilizing the material, the friction coefficient and the abrasion can be reduced.

Description

technical field [0001] The invention relates to a material for manufacturing the inner core of a bearing, in particular to a special material for the inner core of an engineering plastic bearing. Background technique [0002] Plastic bearings are unique in light weight, easy to install, corrosion-resistant, and free from maintenance. At the same time, they have the performance of vibration reduction and impact resistance that common cast iron seats or stamping seats do not have. With the continuous development of new materials are more and more widely used in engineering. [0003] The traditional plastic bearing inner core uses PE (polyethylene), and HDPE (high-density polyethylene) can meet general purposes. Flat plastic bearings for automobiles require ultra-low friction coefficient and low wear loss under high-load conditions. Traditional PE and HDPE cannot meet the requirements, and ultra-high molecular weight polyethylene is needed to achieve it. Ultra-high molecular ...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L27/18C08L83/04C08K13/02C08K3/36
Inventor 吴南松
Owner 吴南松