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Polyurea plate type support and manufacturing method thereof

A polyurea board and bearing technology, which is applied in bridge parts, bridges, buildings, etc., can solve the problem of anti-ultraviolet radiation, high and low temperature oil resistance, poor corrosion resistance, limited service life of bridge rubber bearings, maintenance and repair costs Advanced problems, to avoid secondary recycling, simple manufacturing process, short production cycle

Pending Publication Date: 2022-04-12
柳州市桥厦科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The first purpose of the present invention is to solve the defects and deficiencies that the service life of existing bridge rubber bearings is limited, resulting in high bridge maintenance costs, and the rubber materials in the aged and scrapped rubber bearings are easy to be recycled. The invention patent provides a reasonable structure, which not only can significantly improve the vertical bearing capacity of the bearing, but also has excellent performance that traditional rubber bearings do not have, prolongs the service life, and can avoid secondary recycling of rubber A polyurea plate bearing
[0005] The second purpose of the present invention is to solve the problem that the existing bridge rubber bearings have poor anti-ultraviolet radiation, high and low temperature resistance, oil resistance and corrosion resistance, and have a short service life, and need to be vulcanized during the processing process, and the production cycle is long. The defects and deficiencies that the process will pollute the environment provide a simple manufacturing process, no need for vulcanization, short production cycle, no pollution to the environment in the production process, and excellent performance that traditional rubber bearings do not have, long service life, and can A manufacturing method of polyurea plate support avoiding secondary recycling of rubber

Method used

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  • Polyurea plate type support and manufacturing method thereof
  • Polyurea plate type support and manufacturing method thereof
  • Polyurea plate type support and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Embodiment 1, firstly, the stiffened steel plate 2 is blanked and leveled, and then the surface of the stiffened steel plate 2 is derusted and cleaned by sandblasting or shot peening. A plurality of stiffening steel plates 2 are respectively loaded into the mold, and the stiffening steel plates 2 are sequentially loaded in order from bottom to top, and adjacent stiffening steel plates 2 are parallel to each other with a certain gap. Then prepare material A and material B according to the requirements, material A is aliphatic or aromatic isocyanate and its derivatives, material B must be a compound composed of amino-terminated resin and / or amino-terminated chain extender. Finally, material A and material B are sprayed into the assembled mold through equipment, material A and material B are mixed and reacted to form a polyurea elastomer, which is naturally cured and molded to form the plate bearing of the present invention.

Embodiment 2

[0059] Embodiment 2, firstly, the stiffened steel plate 2 is blanked and leveled, and then the surface of the stiffened steel plate 2 is derusted and cleaned by sandblasting or shot peening. Apply adhesive on the stiffened steel plate, put multiple stiffened steel plates 2 into the mold respectively, and load the stiffened steel plates 2 sequentially from bottom to top, and the adjacent stiffened steel plates 2 are parallel to each other and leave a certain gap. Then prepare material A and material B according to the requirements, material A is aliphatic or aromatic isocyanate and its derivatives, material B must be a compound composed of amino-terminated resin and / or amino-terminated chain extender. Finally, material A and material B are sprayed into the assembled mold through equipment, material A and material B are mixed and reacted to form a polyurea elastomer, which is naturally cured and molded to form the plate bearing of the present invention.

Embodiment 3

[0060] Embodiment 3, firstly, the stiffened steel plate 2 is blanked and leveled, and then the surface of the stiffened steel plate 2 is derusted and cleaned by sandblasting or shot peening. Apply adhesive on the stiffened steel plate; then prepare material A and material B according to the requirements, material A is aliphatic or aromatic isocyanate and its derivatives, material B must be composed of amino-terminated resin and / or amino-terminated chain extender The polyurea compound is made into a sheet with a certain thickness, and then it is bonded with a steel plate coated with an adhesive and cured naturally to form the plate support of the present invention.

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Abstract

The polyurea plate type support comprises a support body (1) and is characterized in that more than two layers of stiffening steel plates (2) are horizontally arranged in the support body (1) in the longitudinal direction, the adjacent stiffening steel plates (2) are parallel to each other, a certain gap is reserved between the adjacent stiffening steel plates (2), and polyurea layers (3) are arranged between the adjacent stiffening steel plates (2) and on the outer surfaces of the stiffening steel plates (2). The polyurea layer (3) is a polyurea elastomer generated by fully mixing and reacting an isocyanate-containing compound and an amino-containing compound, the manufacturing process is simple, vulcanization is not needed, the production period is short, the environment is not polluted in the production process, the excellent performance which a traditional rubber support does not have is achieved, the service life is long, and the service life is long. The use cost of the whole life cycle is reduced, and secondary recycling of rubber can be avoided.

Description

technical field [0001] The invention relates to a bearing and a manufacturing method thereof, in particular to a polyurea plate bearing and a manufacturing method thereof, belonging to the technical field of bridge engineering. Background technique [0002] At present, bridge rubber bearings are widely used in the field of highway bridges. The main body of traditional highway bridge plate rubber bearings is made of rubber-based materials. Although the isolation bearings made of rubber can meet the basic functions of bridge isolation, but Due to its insufficient ability to resist ultraviolet radiation, high and low temperature resistance, ozone resistance, oil resistance and other chemical corrosion, cracks will appear on the surface after a period of use, and the cracks will gradually develop to the center of the product and seriously affect the performance of the product. The service life is short. As a result, its durability is not enough to support the design life of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/04B29C44/18
Inventor 叶明坤姚永湖韦谋超黄弘生张广颂刘华峰罗盛敏仲智涛刘屿杨开壮林贵宏潘代锋
Owner 柳州市桥厦科技发展有限公司