Nanometer rare earth inorganic substance/ rubber composite with high wear resistant and excellent dynamic property

Abstract

The invention prepares a nanometer rare earth inorganic substance / rubber composite with high wear resistant and excellent dynamic property. The invention adopts a mechanical blending method to prepare the nanometer rare earth inorganic substance and rubber composite. After the nanometer rare earth inorganic substance and the rubber are composited, higher modulus can be provided, the mechanical property of the rubber composite is improved, the abrasion stripes are blocked up to achieve the aim of dispersing stress through the high strength of the nanometer rare earth inorganic substance so as to improve wear-resisting property, and the internal friction of the composite is improved by utilizing the specific characteristic of smooth surface of the rare earth material so as to achieve the aim of reducing internal friction and resistance to rolling. According to the material prepared by the invention, the modulus can be improved, the mechanical property is improved, the abrasion is greatly reduced simultaneously, the internal friction and the resistance to rolling are reduced, and the composite can be widely applied to materials such as tyres, conveyer belts, sealing elements, piston rings, soles and the like.

Description

Technical field: [0001] The invention relates to a nano rare earth inorganic substance / rubber composite material with excellent wear resistance and dynamic performance. Background technique: [0002] The invention is to prepare nano-rare earth inorganic matter / rubber composite material with high wear resistance and excellent dynamic performance, which is used in tires, conveyor belts, seals, piston rings and shoe soles, etc., which will inevitably produce friction and wear during use. [0003] Abrasion of rubber is considered a destructive phenomenon, but unlike the case of tensile tests and tear tests, it is the destruction of minute areas caused by repeated application of frictional force to the surface of rubber materials. Abrasion refers to the process in which a product or sample changes its weight or size due to abrasion under laboratory or service conditions. Abrasion performance is a very important indicator of rubber products, which characterizes the ability of vul...

AI Technical Summary

Problems solved by technology

[0007] Chinese patent CN100593549C discloses a method of modifying rubber with rare earth additives to improve the wear resistance of rubber. However, due to the poor compatibility of rare earth inorganic substances with the rubber matrix, voids are prone to appear at the interface between it and the polymer matrix. These Voids are defects inside the rubber compound, so the dynamic performance is reduced, especially the dynamic heat generation is significantly increased

In addition, due to the existence of these defects, stress concentration is easy to occur. When the stress concentration exceeds the strength of the molecular chain, damage will occur, so the fatigue resistance of rare earth inorganic materials and rubber composites will deteriorate.

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