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Preparation method and friction pair of composite sliding plate for bridge bearing

A bridge bearing and friction pair technology, applied in bridges, bridge parts, bridge construction, etc., can solve the problems of poor bonding performance, low mechanical strength, wear of non-metallic sliding plates of bearing friction pairs, etc. The effect of uniform load transmission and stable friction coefficient

Active Publication Date: 2020-02-07
LUOYANG SUNRUI SPECIAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of use, it is found that these two materials have disadvantages such as low mechanical properties, low mechanical strength, poor bearing capacity, high wear rate, and poor heat resistance. Large size, non-metallic sliding plate of the friction pair of the support is severely worn, especially the friction pair of the shock-absorbing and isolating support, the friction speed is fast and the friction heat is serious when an earthquake occurs, which brings serious harm to the safety of the use of the support
At the same time, since polytetrafluoroethylene and ultra-high molecular weight polyethylene are inert materials, their surface chemical energy is low and their bonding performance is poor, so it is difficult to bond with metal or other materials during the production of bearings.

Method used

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  • Preparation method and friction pair of composite sliding plate for bridge bearing
  • Preparation method and friction pair of composite sliding plate for bridge bearing
  • Preparation method and friction pair of composite sliding plate for bridge bearing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Weave polyester fiber into plain fiber cloth, soak the woven fiber cloth with 0.5% coupling agent for 0.5h, and dry at 105°C for 1h; mix and modify the resin matrix, wherein the modified resin matrix is ​​unsaturated polyester, friction The performance modifier is molybdenum disulfide, and the ratio of molybdenum disulfide to the total amount of the modified resin matrix is ​​5%; the woven fiber cloth is cut and weighed, and the woven fiber cloth is soaked with the modified resin matrix, and each layer of fiber cloth is evenly soaked into the modified resin matrix. Resin matrix, wherein the woven fiber cloth is 70 parts by weight, and the modified resin matrix is ​​30 parts; 10 layers of lamination are put into the molding mold, and then the composite material is pressed at 80°C with a molding pressure of 2MPa, and the surface A spherical structure oil storage tank is adopted; the thickness of the composite plate measured after demoulding is 4.5mm.

Embodiment 2

[0051] Weave aramid fibers into twill fiber cloth, soak the woven fiber cloth with 1% coupling agent for 1 h, dry at 110°C for 2 h, cut the woven fiber cloth, and carry out mixed modification for the resin matrix, wherein the modified resin matrix is ​​unsaturated polystyrene Ester, the friction performance modifier is polytetrafluoroethylene powder, and the ratio of polytetrafluoroethylene micro powder to the total amount of modified resin matrix is ​​20%; the modified resin matrix is ​​used to impregnate the woven fiber cloth and each layer of fiber cloth is evenly infiltrated with the modified resin The matrix, wherein the weight of the woven fiber cloth is 50 parts, and the modified resin matrix is ​​50 parts; the laminated 18 layers are put into the molding mold, and then the composite material is pressed at 150°C with a molding pressure of 5MPa, and the surface crosses shaped structure oil storage tank; the thickness of the composite plate measured after demoulding is 6.8...

Embodiment 3

[0053] Weave polyphenylene sulfide fibers into plain fiber cloth, soak the woven fiber cloth with 1.5% coupling agent for 1 hour, dry it at 120°C for 1.5 hours, cut the woven fiber cloth, and carry out mixed modification for the resin matrix, wherein the modified resin matrix It is epoxy polyester, and the friction modifier is a mixture of polytetrafluoroethylene micropowder and molybdenum disulfide, wherein polytetrafluoroethylene micropowder accounts for 10% of the total amount of the modified resin matrix, and molybdenum disulfide accounts for the total amount of the modified resin matrix. 3% of 3%; impregnate the woven fiber cloth with the modified resin matrix and each layer of fiber cloth is evenly infiltrated with the modified resin matrix, wherein the woven fiber cloth is 60 parts by weight, and the modified resin matrix part is 40 parts; laminate 30 Put the layer into the forming mold, and then press the composite material with a forming pressure of 4MPa at 120°C, with...

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Abstract

A preparation method and friction pair of a composite slide plate for bridge bearings. The composite slide plate is made of reinforced fiber cloth woven with at least one material and infiltrated with a modified resin matrix. 20mm, and at least one oil storage groove is formed on one side of the non-metallic slide plate. The friction pair is composed of a metal slide plate and a composite slide plate, and the metal slide plate is fitted on one side surface of the composite slide plate with an oil storage tank. The friction pair has the characteristics of good mechanical properties, high mechanical strength, strong bearing capacity, good self-lubricating performance, excellent wear resistance, and outstanding heat resistance. It is very good for bonding composite materials and metal materials together. The use of the fiber-reinforced composite material can optimize the structure of the support under the premise of ensuring the sliding and rotating functions of the support, improve the bearing capacity, reduce the vertical deformation of the support, and reduce the wear of the sliding plate.

Description

technical field [0001] The invention belongs to the development field of polymer composite materials for bridge supports, and in particular relates to a preparation method of a composite sliding plate for bridge supports and a friction pair prepared by using the composite sliding plate. Background technique [0002] Polytetrafluoroethylene and ultra-high molecular weight polyethylene are two materials that are considered to have good self-lubricating effect and the lowest friction coefficient in the field of polymer materials. At present, these two materials are widely used in the friction pairs of bridge building supports. Realize the anti-friction function of the bearing in the process of sliding and rotating. However, in the process of use, it was found that these two materials have disadvantages such as low mechanical properties, low mechanical strength, poor bearing capacity, high wear rate, and poor heat resistance. Large size, non-metallic sliding plate of the fricti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/00C08L67/06C08L77/10C08L23/06C08L27/18C08L63/10C08K3/30C08K3/04C08K9/00C08K7/00C08K7/10C08K3/08E01D19/04
CPCC08K2003/085C08K2003/3009C08K2201/011C08L61/06C08L63/10C08L67/00C08L67/06C08L77/10C08L2201/08C08L2205/02C08L2205/03C08L2205/16C08L2207/068E01D19/04C08K3/30C08L27/18C08L23/06C08K3/04C08K9/00C08K7/00C08K7/10C08K3/08
Inventor 张永兆姜文英曹翁恺王建彬
Owner LUOYANG SUNRUI SPECIAL EQUIP
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