Bridge bearing gliding material and method for preparing the same

Abstract

The invention discloses a bridge support sliding material, which is prepared through following steps: mixing organic resin, fiber, solid lubricant and filler, stirring, pressing and sintering; the weight content of organic resin is 35-99.8%, solid lubricant is 0.1-30%, fiber is 0.1-20%, filler is 0-15%; the organic resin employs politef or super molecular weight polyethylene as resin basic material. The material is characterized by good self-lubricating property and abradability, large bearing capacity, which is two to three times of that of pure PTFE, good creep resistance, low production cost, and wide usage as support bearing for high speed Railway Bridge.

Description

technical field [0001] The invention relates to a bridge support sliding material with a polymer material as the main matrix and a preparation method thereof. Background technique [0002] With the rapid development of my country's bridge industry, various long-span bridges continue to emerge, so the requirements for the bearing capacity of bridge supports and their ability to adapt to displacement and rotation angle are constantly increasing, and new types of bridge supports are developed and researched. appears to be very important. In recent years, the main bridge bearings used in the domestic bridge industry are pot rubber bearings and spherical bearings. Pot-type rubber bearings and spherical bearings have the characteristics of simple structure, compact structure, light weight, low building height, convenient processing and manufacturing, large bearing capacity, and flexible rotation. They have been widely used in many long-span bridges. Polymer materials are used in ...

AI Technical Summary

Problems solved by technology

The current disadvantage is that PTFE has a large creep property under long-term load and is prone to cold flow, which will cause obvious deformation of the skateboard under long-term load.

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