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Self-lubricating high-abrasion-resistance nylon 66 composite material for truck connecting rod sleeve and preparation method of material

A technology of composite materials and connecting rod sleeves, which is applied in the field of high wear-resistant nylon 66 composite materials and its preparation and self-lubrication. It can solve the problems of high copper price, high cost, and high processing difficulty, and achieve light and uniform wear resistance. Dispersion effect, effect of high mechanical properties

Inactive Publication Date: 2016-09-28
烟台恒大聚合体有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The price of copper is higher, and the cost of secondary processing is higher. Due to the limitation of metal processing technology and characteristics, it is more difficult to process products with complex shapes.

Method used

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  • Self-lubricating high-abrasion-resistance nylon 66 composite material for truck connecting rod sleeve and preparation method of material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1, a self-lubricating, highly wear-resistant PA66 composite material for truck connecting rod sleeves, consisting of 85 kg of PA66 EPR27W, 15 kg of carbon fiber, 0.8 kg of antioxidant 1010, and 0.1 kg of antioxidant 168 , 0.8 kg of carbon black, 0.1 kg of lubricant calcium stearate, and 20 kg of PTFE. The preparation method is: mix other components except carbon fiber together in a low-speed mixing device for 5-30 minutes. The mixed materials are put into the main silo of the twin-screw extruder, and the carbon fiber is put into the side silo. They are melted and extruded at the barrel temperature of 180-280℃. After being cooled by the conveyor belt or in a water bath, they are pelletized by a pelletizer. , Made of self-lubricating, high wear-resistant nylon 66 special material.

Embodiment 2

[0015] Example 2, a self-lubricating, highly wear-resistant PA66 composite material for truck connecting rod sleeves, composed of 50kg of PA66 EPR27W, 50kg of carbon fiber, 0.1kg of antioxidant 1098, and 0.8kg of antioxidant 168 , 0.1kg of carbon black, 1kg of lubricant AC-540, and 1kg of graphite. The preparation method is the same as in Example 1.

Embodiment 3

[0016] Example 3, a self-lubricating, highly wear-resistant PA66 composite material for truck connecting rod sleeves, 65kg of PA66EPR27W, 40kg of carbon fiber, 0.5kg of antioxidant 1010, 0.5kg of antioxidant 168, 0.4kg Carbon black, 0.6kg of lubricant WE-3, 10kg of molybdenum disulfide, the preparation method is the same as in Example 1.

[0017] The embodiment of the present invention adopts but not limited to the following equipment: vertical or horizontal high and low mixing equipment, parallel twin-screw L / D=30-50 extrusion equipment, water bath or conveyor belt air cooling method, and pelletizer The final material is obtained by granulation.

[0018] Material properties of the invention:

[0019]

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Abstract

The invention discloses a self-lubricating high-abrasion-resistance nylon 66 composite material for a truck connecting rod sleeve. The composite material is prepared from, by weight, 50-85 parts of injection grade PA66 base material of which the viscosity ranges from 2.6 to 2.9, 15-50 parts of short-cut or continuous glass fibers, 0.1-0.8 part of antioxidant 1010 or 1098, 0.1-0.8 part of antioxidant 168, 0.1-0.8 part of carbon black, 0.1-1 part of lubricating agent calcium stearate and 1-20 parts of PTFE or graphite or molybdenum disulfide or aramid fibers. According to the self-lubricating high-abrasion-resistance nylon 66 composite material for the truck connecting rod sleeve, a nylon 66 based high polymer material blending modification technology is adopted, and by means of melting mixing and extruding methods such as glass fiber reinforcing, processing stabilizing and thermal-oxidation stabilizing, the high-performance high-abrasion-resistance nylon 66 composite material is obtained.

Description

Technical field [0001] The invention belongs to the technical field of polymer material processing and application, and in particular relates to a self-lubricating, high wear-resistant nylon 66 composite material used for truck connecting rod sleeves and a preparation method thereof. Background technique [0002] At present, copper materials are widely used in the automotive field. Heavy truck connecting rod sleeves are still using copper sleeves. Due to poor wear resistance, a lubrication system is required during use to ensure normal operation and prolong service life. The price of copper is higher, and the cost of secondary processing is higher. Due to the limitation of metal processing technology and characteristics, it is more difficult to process products with complex shapes. [0003] With the advancement of science and technology, polymer modified materials have shown their excellent production, processing, recycling, low-carbon and other conventional materials incomparable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08K13/04C08K3/04C08K3/30C08K7/06
CPCC08L77/06C08K3/04C08K3/30C08K7/06C08K13/04C08K2003/3009C08L2201/08C08L27/18
Inventor 黄玉强王秋菊
Owner 烟台恒大聚合体有限公司
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