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Wear-resistant self-lubricating nylon compound material and method for preparing same

A nylon composite material, self-lubricating technology, applied in the field of polymer materials, can solve the problems of low physical and mechanical properties and cost performance, poor material processing performance, etc., and achieve excellent tribological properties, good dimensional stability and heat resistance, Simple and feasible synthesis method

Inactive Publication Date: 2010-10-20
河南省科学院同位素研究所有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above methods can improve the friction and wear properties of nylon materials to a certain extent, they often have a series of shortcomings such as poor material processing performance, physical and mechanical properties and low cost performance.

Method used

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  • Wear-resistant self-lubricating nylon compound material and method for preparing same
  • Wear-resistant self-lubricating nylon compound material and method for preparing same
  • Wear-resistant self-lubricating nylon compound material and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) Take the raw materials according to the weight ratio;

[0022] 2) Use the prepared 5 parts of high-density polyethylene and 10 parts of carbon fiber with 60 Coγ-rays or electron accelerators were irradiated at a dose rate of 10kGy / h for 4h and 3h respectively;

[0023] 3) With 100 parts of dried nylon 6 pellets and the high-density polyethylene obtained in step (2), add 8 parts of polytetrafluoroethylene (PTFE) superfine powder, 0.2 part of antioxidant: antioxidant 1010 and antioxidant 168 each accounted for 0.1 parts, 3 parts of compatibilizer CMG9805, 2 parts of radiation sensitizer: triallyl isocyanurate (TAIC), stirred and mixed evenly in a high-speed mixer;

[0024] 4) The material obtained in step (3) is fed into the twin-screw extruder through a feeder, and the carbon fiber obtained in step (2) is added to the side feeding port of the twin-screw extruder, and the twin-screw extruder The temperature of each section of the machine from the feeding port to the ...

Embodiment 2

[0028] 1) Take the raw materials according to the weight ratio;

[0029] 2) Use the prepared 10 parts of high-density polyethylene and 20 parts of carbon fiber with 60 Coγ-ray or electron accelerator 10kGy / h dose rate irradiation for 3h and 4h;

[0030] 3) 100 parts of high-density polyethylene obtained through drying processed nylon 6 pellets and step (2), then add 10 parts of polytetrafluoroethylene (PTFE) superfine powder, 0.2 part of antioxidant 1010, 2 parts Compatilizer CMG9805, 1 part of radiation sensitizer: triallyl isocyanurate (TAIC), stir and mix in a high-speed mixer;

[0031] 4) The material obtained in step (3) is fed into the twin-screw extruder through a feeder, and the carbon fiber obtained in step (2) is added to the side feeding port of the twin-screw extruder, and the twin-screw extruder The temperature of each section of the machine from the feeding port to the machine head is 200°C, 220°C, 230°C, 230°C, 230°C, 210°C, and the speed is 180r.p.m;

[0032...

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Abstract

The invention discloses a wear-resistant self-lubricating nylon compound material and a method for preparing the same, and belongs to the technical field of macromolecular materials. The wear-resistant self-lubricating nylon compound material comprises the following raw materials in part by weight: 100 parts of nylon, 10 to 30 parts of carbon fiber, 5 to 15 parts of polyethylene, 2 to 4 parts of compatilizer, 0.5 to 3 parts of irradiation sensitizer, 0.1 to 0.3 part of antioxidant and 5 to 15 parts of polytetrafluoroethylene. The preparation method comprises the following steps: irradiation pretreatment of carbon fibers and polyethylene, preparation of nylon / polytetrafluoroethylene / carbon fiber compound materials, irradiation crosslinking modification of nylon / polytetrafluoroethylene / carbon fiber compound materials and the like. The wear-resistant self-lubricating nylon compound material possesses excellent wear-resistant property, self-lubricating property and physical mechanical property and high size stability and heat resistance, and can be widely applied in fields of self-lubricating bearings, shaft sleeves, mechanical cams, gears, sucker rod couplings, oil-free lubricating materials and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to a wear-resistant self-lubricating nylon composite material and a preparation method thereof. Background technique [0002] Due to economic, ecological and technical reasons, self-lubricating material technology is the development trend of lubrication technology at present, and the development of self-lubricating composite materials with high mechanical strength and good friction performance has become an important hot spot in the field of tribology. Polymer-based self-lubricating composite materials have also attracted the attention of researchers in this field due to their light weight and good formability. [0003] Polyamide, that is, nylon, is the engineering plastic with the largest output and consumption. It has excellent mechanical properties, wear resistance, heat resistance and electrical insulation. It is one of the earliest plastics used as self-lubricating ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L23/06C08L27/18C08L51/06C08K13/06C08K9/00C08K7/06C08K5/3492C08K5/103C08K5/134C08K5/526C08J3/28C08J3/24
Inventor 杨明成朱军李召朋李坤豪赵惠东王允王万里
Owner 河南省科学院同位素研究所有限责任公司
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