Self-lubricating wear-resistant polyether-ether-ketone slip sheet and formula and preparation method thereof
A technology of wear-resistant polyether and polyetheretherketone, which is applied in the field of high-performance polymer materials, can solve problems such as glass transition temperature load thermal deformation temperature is not high enough, friction force and coefficient of friction are large, thermoplastic deformation and flow, etc. Achieve the effects of increasing the contact area, improving self-lubrication, and reducing production costs
Active Publication Date: 2014-02-26
大连路阳科技开发有限公司
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Problems solved by technology
However, as a tribological material, its glass transition temperature (Tg) and load heat deformation temperature (135-160°C) are not high enough, and the friction coefficient reaches 0.4 or even above 0.6 when it is rubbed against steel, and the wear rate is relatively high. limited; in addition, there are problems such as high cost
[0004] The tribological study of pure PEEK shows that when PEEK rubs against steel, there are many obvious scraping furrows and scratches on the wear surface, as well as large spalling pits. Under the action of stress, crack initiation and propagation form fatigue-delamination wear, and the temperature rise in the friction process causes the surface material of polyetheretherketone to soften, which is prone to thermoplastic deformation and flow, and aggravates plowing and adhesion, resulting in friction and High coefficient of friction and high material wear rate
Method used
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Effect test
Embodiment 1
[0031] The raw materials used are 80 parts of polyether ether ketone, 15 parts of polytetrafluoroethylene, MoS 2 2 parts and 3 parts of graphite. After molded by method 1, a wear-resistant sliding piece of 160×150×4 (mm) was processed by a grinder. The tribological properties of the made sliding piece were investigated on a friction and wear testing machine, and the sliding speed was 1m / s, the sliding time is 3h, and the wear amount is 0.9g.
Embodiment 2
[0033] The raw materials are 70 parts of polyether ether ketone, 25 parts of polytetrafluoroethylene, MoS 2 2 parts and 3 parts of graphite. After injection molding by method 2, a wear-resistant sliding piece of 160×150×4 (mm) was processed on a grinding machine. The tribological properties of the made sliding piece were investigated on a friction and wear testing machine, and the sliding speed was 1m / s, the sliding time is 3h, and the wear amount is 1.0g.
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The invention discloses a self-lubricating wear-resistant polyether-ether-ketone slip sheet and a formula and a preparation method thereof. The preparation method comprises the following steps: mixing 70-80 parts by weight of polyether-ether-ketone, 15-25 parts by weight of polytetrafluoroethylene, 2-4 parts by weight of MoS and 1-3 parts by weight of graphite, performing injection molding to form sheets which accord with the specifications, preserving the heat in a setting mold at the temperature of 230-260 DEG C for 2-4 hours, and finally grinding to obtain the wear-resistant slip sheet. The preparation method is simple in process and easy to operate, the preparation cost is reduced, and the slip sheet is applied to the field of compression and is wide in application and high in application value.
Description
technical field [0001] The invention belongs to the technical field of high-performance polymer materials, and in particular relates to a self-lubricating wear-resistant polyetheretherketone sliding sheet and its formula and preparation method. Background technique [0002] Polymer matrix composites are increasingly used in the field of tribology. Special engineering plastics have excellent properties such as high strength, radiation resistance, corrosion resistance, and high temperature resistance, and are widely used in aerospace, machinery (automobile), petrochemical, biological, electrical, etc., which have special requirements for material mechanics, chemistry, and tribology. engineering field. Some new products of special engineering plastics have a low friction coefficient, good load-bearing meshing performance, and significantly improved wear resistance after composite reinforcement. Used in harsh environments, it provides an ideal friction and wear-resistant mater...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C08L61/16C08L27/18C08K3/30C08K3/04C09K3/14
Inventor 吴立豪曲敏杰乔占凤
Owner 大连路阳科技开发有限公司
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