Anti-aging lubricating nylon-66 material with appropriate rigidness and flexibility

Abstract

The invention belongs to the technical field of a novel material, relates to the engineering plastics modification technology, and in particular to the engineering plastics flexible balance modification technology. The invention relates to an anti-aging lubricating nylon-66 material with appropriate rigidness and flexibility, which is prepared by adopting inorganic powder, anti-wear agent, flexibilizer, anti-aging assistant, internal lubricating processing assistant and the like to compositely modify the nylon-66 material. The anti-aging lubricating nylon-66 material at least comprises following ingredients (by weight percent): 100 parts of nylon-66, 5 to 25 parts of flexibilizer, 5 to 50 parts of talcum powder, 2 to 10 parts of molybdenum disulfide and 2 to 5 parts of channel black. The material has excellent tribology performance, excellent physical mechanical performance and excellent anti-aging performance, after being accelerated to age for 3500h under the hot and damp condition, the tensile strength is only reduced by 11.7 percent, the bending strength is reduced by 12 percent, and the notch impact performance is reduced by 4.5 percent. The anti-aging lubricating nylon-66 material can be widely applied to the parts requiring the lubrication and anti-aging performance such as a lubricating bearing, a shaft sleeve, a gear, a bearing holder and the like. The preparation method is simple, and the anti-aging lubricating nylon-66 material has industrialized application prospect.

Description

technical field [0001] The invention belongs to the technical field of new materials, and relates to engineering plastics modification technology, in particular to engineering plastics stiffness-toughness balance modification technology. Background technique [0002] At present, domestic lubricated nylon 66 materials are mainly prepared by lubricant plus fiber reinforcement, or lubricant plus compatibilizer and other methods. [0003] CN101864168B discloses a wear-resistant self-lubricating nylon composite material prepared by using nylon as a matrix, pretreating polyethylene and carbon fibers with radiation, and adding a compatibilizer. [0004] CN01955664A discloses a kind of reinforced wear-resistant nylon 66 composite for textile equipment, which uses nylon as the matrix and adopts wear-resistant agent, glass fiber and toughening agent. [0005] CN100540607C discloses a method for preparing a reinforced and toughened nylon composite material with nylon as a matrix, usin...

AI Technical Summary

Problems solved by technology

[0006] At present, domestic lubricated nylon 66 materials are mainly prepared by lubricant plus fiber reinforcement, or lubricant plus compatibilizer, etc. Lubricant nylon 66 materials are prepared by lubricant plus fiber reinforcement, which has too much rigidity and too high elongation at break. Low; using lubricant plus compatibilizer to prepare lubricated nylon 66 material, its rigidity is too low, and the elongation at break is too high

Moreover, the anti-aging performance of nylon materials is not considered, and there are often disadvantages such as poor processing performance and anti-aging performance.