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Polyaryletherketone composite material and application of the same in bridge bearing

A technology of polyaryletherketone and composite materials, which is applied in the direction of bridges, bridge parts, bridge construction, etc., can solve the problems of poor wear resistance, high friction coefficient of polyaryletherketone, insufficient lubrication, etc., and achieve high wear resistance Effect

Inactive Publication Date: 2013-04-03
CHONGQING CINWO PLASTICS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when it is applied to the field of bridge supports, the friction coefficient of polyaryletherketone is too large, the degree of lubrication is not enough, and the wear resistance is poor, which greatly shortens the service life of bridge supports

Method used

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  • Polyaryletherketone composite material and application of the same in bridge bearing
  • Polyaryletherketone composite material and application of the same in bridge bearing
  • Polyaryletherketone composite material and application of the same in bridge bearing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Get 80 parts of PEEK resin (the density of polyether ether ketone is 1.35g.cm -3 , the size is less than 100um), 5 parts of polytetrafluoroethylene powder, 5 parts of carbon fiber, graphite fiber or silicon carbide fiber (the average diameter of carbon fiber is 100um, the length is 20mm, and the density is 1.67g.cm -3 ), 9 parts of molybdenum disulfide, graphite or carbon powder, 1 part of tin bronze alloy, these materials are fully pre-mixed and stirred by a mechanical mixer; then processed by ball milling, fully dispersed and mixed evenly, and then put into an oven , to dry, remove the moisture of the mixture, and dry at 130°C for 3 hours; put the above powder into the mold, pressurize to 1MPa, wait for the temperature to rise to 340°C, and keep the temperature for 15min. During the above molding process, Deflate every 5 minutes. Continue to raise the temperature to 400°C, and slowly increase the pressure. When the pressure reaches 5MPa, keep it under this pressure f...

Embodiment 2

[0023] Get 50 parts of PEEKK resin (the density of polyether ether ketone ketone is 1.36g.cm -3 ), the size is less than 200um, 20 parts of polytetrafluoroethylene powder, 20 parts of glass fiber, 15 parts of nano-diamond powder or niobium diselenide, 15 parts of calcium carbonate or calcium sulfate, and fully premix these materials with a mechanical mixer Stir; then use the method of ball milling to process, fully disperse and mix evenly, then put it in an oven, and dry it to remove the moisture of the mixture. The drying condition is 135°C for 3 hours; 1.5MPa, when the temperature rises to 350°C, keep the temperature constant for 15 minutes, during the above molding process, deflate once every 5 minutes. Continue to raise the temperature to 400°C, and slowly increase the pressure. When the pressure reaches 5MPa, keep it under this pressure for 40 minutes, cool down to 150°C at a speed of 50°C / min, and keep it warm for 1 hour for post-treatment to eliminate internal stress. ...

Embodiment 3

[0025] Take 70 parts of PEK or polyetheretherketone raw materials, 2 parts of Kevlar, Nomex or PBI fiber, 27 parts of molybdenum disulfide, quartz powder or boron nitride, and 1 part of carbon black, and fully pre-mix these materials with a mechanical mixer Stir; then use the method of ball milling to process, fully disperse and mix evenly, then put it in an oven, and carry out drying treatment to remove the moisture of the mixture, and the drying condition is 150°C for 3 hours; put the above powder into the mold, pressurize to 3MPa, wait for the temperature to rise to 360°C, and keep the temperature constant for 12 minutes. During the above molding process, deflate once every 5 minutes. Continue to heat up to 420°C, and slowly increase the pressure. When the pressure reaches 10MPa, keep it under this pressure for 60 minutes, cool down to 200°C at a speed of 20°C / min, and keep it warm for 1 hour for post-treatment to eliminate internal stress. The mold temperature is lowered ...

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Abstract

The present invention discloses a polyaryletherketone composite material and a preparation method thereof. The polyaryletherketone composite material comprises the following components, by weight, 40-99.8 parts of a polyaryletherketone resin, 0.1-20 parts of a polytetrafluoroethylene resin, 0-20 parts of fibers, 0.1-30 parts of a solid lubricant, and 0-15 parts of a filler, wherein various components are completely mixed and grinded into fine powder, and the fine powder is subjected to molding forming to prepare the material. According to the present invention, polyaryletherketone modification is performed so as to prepare the polyaryletherketone composite material with characteristics of high wear resistance and good lubricity; test results show that an average friction coefficient of the composite material is not higher than 0.15, and an average wear rate is less than 10<-8> mm<3> / Nm; and the polyaryletherketone composite material is made into a bridge bearing used in the bridge field, and a high elasticity polyurethane is matchedly adopted as a pressure bearing plate and sealing ring buffer material so as to substantially improve mechanical properties of the bridge bearing and improve a service life of the bridge bearing.

Description

technical field [0001] The invention relates to a polymer composite material and its application, in particular to a polyaryletherketone composite material and its application on bridge supports. Background technique [0002] With the rapid development of my country's transportation industry, various long-span bridges and high-speed railways continue to emerge. Therefore, the requirements for the bearing capacity of bridge supports and their ability to adapt to displacement and corners are constantly increasing, and new bridges that are suitable for them are developed and researched. Stands are very important. In recent years, the main bridge bearings used in the domestic bridge industry are basin rubber bearings or spherical bearings. In the structural design of basin rubber bearings at home and abroad, polymer materials are used, steel bearing plates are used to solve the force transmission of bridges, and lubricating materials with good wear resistance are used as the mai...

Claims

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Application Information

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IPC IPC(8): C08L71/08C08L27/18C08K7/06C08K7/14C08K7/10C08K3/30C08K3/04C08K3/08C08K3/26C08K3/38C08K3/36E01D19/04E01D101/40
Inventor 不公告发明人
Owner CHONGQING CINWO PLASTICS
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