A 2.5-dimensional carbon fiber woven preform reinforced resin-based friction material

Abstract

The invention discloses a 2.5 dimensional carbon fiber woven prefabricated part reinforced resin matrix friction material. The friction material is formed by combining and curing 2.5 dimensional carbon fiber woven prefabricated parts serving as reinforced structures and matrix resin glue. The specific preparation process comprises the steps of pretreatment of carbon fibers, preparation of the 2.5 dimensional carbon fiber woven prefabricated parts, preparation of the matrix resin glue and preparation of the friction material. According to the friction material, the carbon fibers are subjected to the pretreatment, and thus the carbon fibers are excellent in strength elongation property and weavability. Attachment warps penetrate through the material in the whole thickness direction, three-dimensional structures are formed, the delaminating problem is solved, the interlaminar shear strength is improved, the mechanical properties are outstanding, and the service life is prolonged; meanwhile, the preparation process is simple, and a product is low in porosity, uniform and compact, flat and clean in surface, low in production cost and easy to popularize.

Description

technical field [0001] The invention relates to the fields of material science and processing technology, in particular to a friction material prepared by compounding and solidifying a 2.5-dimensional carbon fiber woven prefabricated body with a resin material. Background technique [0002] Carbon fiber reinforced resin-based friction materials have a simple preparation process and have good thermal stability, mechanical properties and excellent friction and wear properties. They have been widely used in the automotive industry and have broad development prospects. In recent years, a large number of studies on carbon fiber resin-based friction materials formed by mixed fiber hot pressing have shown that the preparation process of fiber mixed hot pressing makes the friction material have the disadvantages of poor structural integrity, low designability, easy delamination and damage, and it is difficult to withstand large torsion. Torque, a defect that is prone to failure unde...

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Problems solved by technology

[0003] The 2.5-dimensional woven structure is the three-dimensional angular interlocking structure, including three-dimensional orthogonal, shallow cross-bending and deep cross-linking and other structural forms. As an important part of the three-dimensional fabric structure, its biggest feature is the thickness of the warp along the fabric The direction is configured at a certain angle, which overcomes the delamination problem and increases the interlayer shear strength, making the 2.5-dimensional composite material have excellent structural designability, overall impact resistance and fatigue resistance; however, due to the 2.5-dimensional woven In the manufacturing process of carbon cloth, the large mechanical force and external frictional force lead to a large amount of hairiness, serious fiber damage, and because of the strong conductivity of carbon fiber, a large amount of hairiness is easy to damage the machine and cause unpredictable losses. These problems are undoubtedly delayed by 2.5 Production and application of dimensional carbon fiber woven fabric

[0004] At present, the research on carbon fiber two-dimensional cloth reinforced resin-based composite materials mostly adopts traditional molding processes such as hand lay-up, pre-impregnation, molding, and lamination, which are prone to poor one-time moldability, rough surface, high porosity, and uneven impregnation and compounding. Problems seriously affect the performance of carbon cloth composite materials; the composite materials obtained by the lamination process have poor interlayer shear strength, are easy to be layered and damaged, and have anisotropy, and the molding process is complex

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