Self-lubricating abrasion-resistant injection-molding grade nylon 66 and preparation technology thereof

Abstract

The invention relates to an organic polymer composite material, more specifically, in particular to self-lubricating abrasion-resistant injection-molding grade nylon 66 and a preparation technology thereof. The self-lubricating abrasion-resistant injection-molding grade nylon 66 comprises the following components according to weight ratio: 49.5-90% of nylon 66, 1-35% of graphite powder, 0.3-1.5% of antioxidant, 0.1-3.0% of heat stabilizer, 0.1-2.8% of coupling reagent, 0.1-3.0% of HMW (high molecular weight) silicone oil and 0.3-5.5% of other auxiliaries. The self-lubricating abrasion-resistant injection-molding grade nylon 66 provided by the invention has the characteristics of environment friendliness and freeness from halogen; better self-lubrication and abrasion resistance are obtained on a basis of keeping the comprehensive properties of original filled nylon 66; meanwhile, a mold releasing operation is automatically carried out in the process of injection-molding or extruding finished products, so that a releasing agent is unnecessary; and the raw and auxiliary materials as well as production equipment are all domestic, so that the production cost and raw material cost are largely lowered, therefore the comprehensive competitive power of products is well improved.

Description

technical field [0001] The invention relates to an organic polymer composite material, and more specifically relates to a self-lubricating wear-resistant injection molding grade nylon 66 and a manufacturing process thereof. Background technique [0002] Nylon 66 is one of the most widely used engineering plastics. It is widely used to make parts of various machinery, automobiles, chemicals, electronics and electrical devices. It has a high melting point and has good physical and mechanical properties and wear resistance. Sexuality and self-lubrication, especially suitable for high-strength or wear-resistant parts, these comprehensive characteristics are not available in other plastics. However, at present, social technology is developing rapidly, changing with each passing day, and new products and new inventions are pouring out in large numbers. For parts that can effectively and greatly reduce the friction coefficient and the raw materials themselves have strong wear resis...

AI Technical Summary

Problems solved by technology

However, at present, social technology is developing rapidly, changing with each passing day, and new products and new inventions are pouring out in large numbers. For parts that can effectively and greatly reduce the friction coefficient and the raw materials themselves have strong wear resistance, the many advantages of ordinary nylon 66 make designers very happy. Favored, but the above shortcomings are very troublesome

The raw materials with the above functions currently available on the market are either expensive such as nylon 12, or are added with expensive additive materials such as polytetrafluoroethylene, which also leads to high material costs. In this way, relatively high raw materials are required. Lower raw material and production costs