Wear-resisting self-lubricating nylon carbon fiber composite material and preparation method thereof

Abstract

The invention relates to a wear-resisting self-lubricating nylon carbon fiber composite material and a preparation method thereof. The wear-resisting self-lubricating nylon carbon fiber composite material comprises the following components by mass percent: 20-70% of PA6, 5-20% of lubricating agent, 0.01-10% of steel-enhancing nucleating agent, 10-50% of short carbon fiber, 0.01-10% of dispersing agent and 0.01-10% of antioxidant. The wear-resisting self-lubricating nylon carbon fiber composite material prepared according to the invention has excellent tribological property, self-lubricating property and physical and mechanical properties, has higher size stability and can be widely applied to the fields of self-lubricating bearing, shaft sleeve, mechanical cam, gear, sucker rod coupling and oil-free lubricating material. According to the invention, the wear-resisting self-lubricating nylon carbon fiber composite material is prepared from nylon and short carbon fiber, so that the material cost is greatly lowered and the product has a competitive advantage in the market in the field of the wear-resisting self-lubricating nylon carbon fiber composite material. The production process of the preparation method provided by the invention is as follows: firstly, mixing the raw materials at the above ratio, and then putting into a twin-screw extruder, controlling the temperature at 220-260 DEG C, and extruding and pelletizing, thereby acquiring the wear-resisting self-lubricating nylon carbon fiber composite material.

Description

technical field [0001] The invention relates to a technical field of polymer materials, in particular to a wear-resistant self-lubricating nylon carbon fiber 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-lub...

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.

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