Preventing water and inflaming retarding composite flexible cable sheath material used in wet environment and preparation method thereof

Abstract

The invention discloses a preventing water and inflaming retarding composite flexible cable sheath material used in wet environment. The flexible cable sheath material is characterized by comprising the following raw materials: be weight, 100-102 parts of polyether urethane, 20-21.5 parts of aluminum diethylphosphinate, 17-18 parts of melamine cyanurate, 4.3-4.5 parts of aluminium titanate, 50-52 parts of PVC, 1.6-1.8 parts of cross-linking agent TAIC, 6-7 parts of calcium stearate, 20-22 parts of acetyl tributyl citrate, 3-4 parts of polydimethylsiloxane, 3-4 parts of glycerin monostearate, 5-7 parts of antimonous oxide, 4-5 parts of emulsified asphalt, 4-5 parts of bisphenol A polycarbonate and 8-10 parts of talcum powder. The prepared product has good water resistance, good mud resistance, good decay resistance, good flame resistance, and has soft material. So that the prepared cable sheath has large bending amplitude, is especially suitable for the places where have high fireproofing requirement in coastal region having high humidity, and is especially suitable for ocean engineering.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a water-blocking and flame-retardant composite flexible cable sheath material suitable for humid environments and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane is an elastomer material polymerized by diisocyanate, polyol and chain extender. It has the characteristics of high strength, high elasticity, wear resistance, oil resistance, weather resistance, low temperature resistance and softness. It is a combination of any rubber and plastic. not fully equipped. According to the molecular structure, it can be divided into two types: polyether type and polyester type. Due to the complicated use environment of the cable, the required service life is more than 10 years, while the polyester type polyurethane has poor high temperature hydrolysis resistance and low temperature flexibility. The resistance is not as good as polyether type,...

AI Technical Summary

Problems solved by technology

The oxygen index of polyether polyurethane material is only 18%, which is a flammable material, and it has thick smoke accompanied by toxic gas and severe molten droplets when burned, and the price of polyurethane is relatively high, which limits its application in the cable industry. Therefore, it is necessary to carry out flame-retardant modification of polyether polyurethane and cross-linking modification on the components