Polytetrafluoroethylene composite material and product preparation method thereof
A polytetrafluoroethylene and composite material technology, applied in the field of composite materials and their preparation, can solve the problems of wear resistance, low cost performance, poor creep resistance, etc., and achieve the effects of improving performance, reducing costs, and improving thermal conductivity.
Active Publication Date: 2012-05-23
NANJING COMPTECH MATERIALS
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Problems solved by technology
[0002] Polytetrafluoroethylene resin is an engineering plastic with excellent corrosion resistance, anti-aging and friction coefficient, but the performance of single-component polytetrafluoroethylene often cannot meet the requirements of mechanical equipment
Main disadvantages: not wear-resistant, poor creep resistance, small thermal conductivity, not easy to dissipate heat, etc.
For example, compressor L-shaped seals, products processed with pure PTFE resin cannot meet the service life and performance requirements of the machine
In addition, many polytetrafluoroethylene composite materials are disclosed in the prior art. For sealing materials such as compressor L-shaped seals, these materials often fail to meet the requirements for use. Although some meet the requirements, they are not cost-effective. high
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[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0025] An overview of the method follows:
[0026] 1. A polytetrafluoroethylene composite material, whose components include one or more of molybdenum disulfide, aluminum oxide, copper powder, graphite, silicon dioxide or stainless steel powder, and polytetrafluoroethylene; the polytetrafluoroethylene The tetrafluoroethylene composite material is a binary polytetrafluoroethylene composite material, wherein the weight percentage of polytetrafluoroethylene is 80-99.9%, and the balance is other components. The preferred component is polytetrafluoroethylene with a weight percentage of 92-99.9%, and the balance is other components.
[0027] The improvement of this material includes: adding polyether ether ketone (PEEK) or polyphenylene resin (PPL) on the basis of 100% of the above weight, the proportion of polyether ether ketone added is 0.1-80% by...
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Abstract
The invention discloses a polytetrafluoroethylene composite material, which comprises one or more of molybdenum disulfide, aluminum sesquioxide, copper powder, graphite, silicon dioxide and stainless steel powder and polytetrafluoroethylene, wherein the polytetrafluoroethylene composite material is a binary polytetrafluoroethylene composite material, which comprises 80 to 99.9 weight percent of the polytetrafluoroethylene, and the balance of other components. A product preparation method for the material comprises the following steps: compounding the materials of polytetrafluoroethylene (PTFE), molybdenum disulfide (MoS2), aluminium oxide (Al2O3), Cu powder, silicon dioxide (SiO2), polyphenylester (PPL), stainless steel powder, carbon fiber (CF), glass fiber (GF) and the like, molding thematerials by a mold pressing sintering method, and then mechanically machining the materials to form an L-shaped sealing element.
Description
technical field [0001] The invention relates to composite materials and their preparation, especially the composition and preparation of special engineering materials, specifically a fiber-reinforced polytetrafluoroethylene composite material (KT-L type) suitable for compressor L-shaped seals and its products Preparation. Background technique [0002] Polytetrafluoroethylene resin is an engineering plastic with excellent corrosion resistance, anti-aging, and friction coefficient, but the performance of single-component polytetrafluoroethylene often cannot meet the requirements of mechanical equipment. Main disadvantages: not wear-resistant, poor creep resistance, small thermal conductivity and difficult to dissipate heat. For example, compressor L-shaped seals, products processed with pure PTFE resin cannot meet the service life and performance requirements of the machine. In addition, many polytetrafluoroethylene composite materials are disclosed in the prior art. For sea...
Claims
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IPC IPC(8): C08L27/18C08L71/08C08L67/03C08K3/30C08K3/22C08K3/08C08K3/04C08K3/36C08K7/14C08K7/06B29C67/04
Inventor 杨文光林丰陈朝曦杨烨陈佩民徐小曼靳予
Owner NANJING COMPTECH MATERIALS