Three-network copolymerized castable for bus duct

Abstract

The invention relates to a three-network copolymerized castable for a bus duct. The castable comprises the following components in parts by mass: 10-30 parts of a prepolymer of hexamethylene diisocyanate (HDI) tripolymer; 10 to 30 parts of a prepolymer of norbornane diisocyanate (NBDI) and polyether polyol; 5 to 15 parts of epoxy resin E51; adding a cross-linking agent according to the calculatedamount; 15-20 parts of aluminum hydroxide powder; 20 to 25 parts of aluminum oxide; and 1 to 25 parts of chopped glass fiber shreds; according to the invention, HDI, NBDI and epoxy resin E51 are usedas resin bases; the three-network copolymerized pouring material for the bus duct is prepared by adding a proper amount of water into the raw materials to form a network structure in a three-network copolymerized form, and adding a proper amount of filler, and has the advantages of very good loading property, excellent weather resistance, excellent chemical resistance, excellent flame retardancy,excellent water resistance and excellent corrosion resistance, and greatly prolonged service life.

Description

technical field [0001] The invention relates to a three-network copolymerized castable for bus ducts, which belongs to the technical field of polymer materials. Background technique [0002] With the emergence of modern engineering facilities and equipment, all walks of life have higher and higher requirements for high-strength composite materials, especially the emergence of many large-scale machinery, special equipment, high-end equipment, large-scale buildings and large-scale factory buildings. Composite materials are in increasing demand. Busway is a better substitute for wires and cables. However, the epoxy resin-based composite materials currently on the market are relatively brittle. In outdoor ultraviolet radiation, high temperature and other environments, the photodegradation and thermal degradation of epoxy resin are easy to cause. There is a problem of cracking, and the load resistance is poor, so it is not suitable for making engineering components under high-st...

AI Technical Summary

Problems solved by technology

Busway is a better substitute for wires and cables. However, the epoxy resin-based composite materials currently on the market are relatively brittle. In outdoor ultraviolet radiation, high temperature and other environments, the photodegradation and thermal degradation of epoxy resin are easy to cause. There is a problem of cracking, and the load resistance is poor, so it is not suitable for making engineering components under high-strength and complex load conditions

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