Composite friction material and its preparation method and preparation device

Abstract

The invention discloses a composite friction material and a preparation method and device thereof. The preparation method comprises the steps that 1, a caprolactam monomer reacts with a catalyst to obtain a first reaction solution; 2, the caprolactam monomer, polyether polyol and an isocyanate compound react with a solid lubricant with a -OH group on the surface to obtain a second reaction solution; 3, the first reaction solution and the second reaction solution are mixed for hot forming to obtain the composite friction material. The preparation device comprises a first reaction kettle, a second reaction kettle, a vacuum pump, a mold and a heating furnace. The first reaction kettle and the second reaction kettle are communicated with the vacuum pump through a first buffer pipeline and a second buffer pipeline. The first buffer pipeline and the second buffer pipeline are provided with buffer kettles. The first reaction kettle and the second reaction kettle are communicated with a mixed feeding pipe on the mold through a first discharge pipe and a second discharge pipe. According to the composite friction material prepared through the preparation method and device, tensile strength performance and bending strength performance are ensured, and meanwhile indoor temperature and low temperature impact toughness and friction wear performance are greatly improved.

Description

technical field [0001] The invention belongs to the field of material science and technology, and relates to a composite friction material, a preparation method and a preparation device thereof, in particular to a polyamide 6 / polyurethane / solid lubricant composite friction material, a preparation method and a preparation device thereof. Background technique [0002] The surface hardness of polymer materials is low, the bearing capacity is poor, and it is easy to wear. In order to improve its tribological properties, it is necessary to physically or chemically modify the polymers to make polymer matrix composites, so that they have excellent tribological properties. Widely used in occasions requiring dry friction, heavy load, low speed, etc. The friction characteristics of polyamide 6 composite materials are relatively outstanding, but its wear resistance and self-lubricating properties are not good, and the wear rate is relatively high. In addition, the use of composite prod...

AI Technical Summary

Problems solved by technology

The friction characteristics of polyamide 6 composite materials are relatively outstanding, but its wear resistance and self-lubricating properties are not good, and the wear rate is relatively high. In addition, the use of composite products is often limited in occasions that require high impact and wear resistance at the same time.

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