Heat-resistant and flame-retardant bridge frame and preparation method thereof

Abstract

The invention provides a heat-resistant and flame-retardant bridge frame and a preparation method thereof, and relates to the technical field of bridge frame processing. The heat-resistant and flame-retardant bridge frame is made of the following raw materials in parts by weight: 80-100 parts of bisphenol-A epoxy resin, 6-10 parts of unsaturated polyester, 3-4 parts of alumina ceramics, 1-3 partsof azobenzene, 2-4 parts of polypropylene glycol, 2-6 parts of polyvinyl formal, 2-4 parts of phosphonitrilic chloride trimer, 1-3 parts of nano-silica, 0.8-1.6 parts of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, 2-4 parts of a plasticizer, 1-3 parts of a flame retardant and 0.2-0.4 part of a defoamer. According to the invention, the defects of the prior art are overcome, the flame retardant performance of the traditional glass steel bridge frame is improved, and by adopting the preparation method of one-time molding after the raw materials are mixed, the production efficiency of a product is effectively improved, the production cost is reduced, and the heat-resistant and flame-retardant bridge frame is suitable for popularization and production.

Description

technical field [0001] The invention relates to the technical field of bridge processing, in particular to a heat-resistant and flame-retardant bridge and a preparation method thereof. Background technique [0002] The bridge frame is a structure divided into trough type, tray type, ladder frame type, and grid type. It is composed of brackets, brackets, and installation accessories. Building materials used to support cables, protect cables, and manage cables on the corridor support. [0003] The cable bridges currently used are generally divided into metal bridges and glass fiber reinforced plastic bridges. The metal bridges are processed into straight-through bridges and combined elbows of various shapes by means of bending and welding of steel plates, aluminum plates, and stainless steel plates, and then combined. Although this type of bridge has the advantages of good rigidity, it generally has disadvantages such as poor corrosion resistance, heavy bridge body, high cost...

AI Technical Summary

Problems solved by technology

[0003] The cable bridges currently used are generally divided into metal bridges and glass fiber reinforced plastic bridges. The metal bridges are processed into straight-through bridges and combined elbows of various shapes by means of bending and welding of steel plates, aluminum plates, and stainless steel plates, and then combined. Although this type of bridge has the advantages of good rigidity, it generally has disadvantages such as poor corrosion resistance, heavy bridge body, high cost, and unsatisfactory flame-retardant effect; and FRP bridge has good corrosion resistance, but its The flame retardant effect is still limited, so how to improve the flame retardant performance of this type of bridge is an important direction of research