A kind of environment-friendly high flame-retardant PVC sheath material for communication cables and its preparation method and application

Abstract

The invention relates to the field of sheath materials for communication cables and preparation methods for the sheath materials and particularly relates to an environment-friendly high-flame-retardance PVC (Polyvinyl Chloride) sheath material for the communication cables, a preparation method of the sheath material and use of the sheath material. The environment-friendly high-flame-retardance PVC sheath material for the communication cables, provided by the invention, is prepared from the following ingredients in parts by weight: 90-100 parts of PVC resin, 20-30 parts of polyester plasticizer, 10-20 parts of tricresyl phosphate, 10-20 parts of bis(2-propylheptyl) phthalate, 4-8 parts of thermal stabilizer, 15-30 parts of aluminum hydroxide, 3-10 parts of composite flame retardant, 6-20 parts of antimony trioxide, 8-15 parts of zinc borate, 0.5-1 part of glyceryl monostearate, 0.2-0.5 part of calcium stearate, 0.3-0.8 part of lignite wax, 0.1-0.4 part of bisphenol A, 0.1-0.4 part of antioxidant 1010, 0.1-0.2 part of antioxidant 168 and 5-15 parts of processing modifier. The environment-friendly high-flame-retardance PVC sheath material for the communication cables is in line with standards GB / T 8815-2008, RoHS and REACH; the sheath material has good extrusion processability, and surfaces of made products are smooth and delicate; and the sheath material has excellent flame retardance, can pass a test of bundled A-class combustion in IEC 60332-3 and is relatively low in production cost.

Description

technical field [0001] The invention relates to the field of communication cable sheath materials and preparation methods, in particular to an environment-friendly high flame-retardant PVC sheath material for communication cables and its preparation method and application. Background technique [0002] In recent years, with the rapid development of the communication field, more and more commercial office buildings and residential high-rise buildings adopt integrated wiring to meet people's needs for information transmission. In order to ensure the flame-retardant effect of cables in communication systems, more and more communication cables are required to pass Class A combustion in bundles in IEC 60332-3. In order to achieve a better flame-retardant effect for communication cables, high requirements are put forward for PVC sheathing materials for communication cables. According to the flame retardant mechanism of flame retardants, a variety of flame retardants are generally...

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to solve the problem of poor processability of products made of polyvinyl chloride injection plastics for existing branch cables in the prior art, rough and rough injection molding surfaces, poor flame retardant effect, and high production costs. High defect, provide an environment-friendly high flame retardant PVC sheath for communication cables with excellent injection molding performance, excellent flame retardant effect, low production cost, smooth and delicate surface of injection molded products, and temperature resistance level of 70 or 90 ℃ Nesting material and its preparation method and use

Images