Process for preparing polyvinyl chloride cable material

Abstract

The invention relates to a process for preparing a polyvinyl chloride cable material, and the process comprises the following steps: 1, adding PVC resin with the degree of polymerization of 1300, SG3 type PVC resin, cyclohexane-1,2-dinonyl diformate, acetyl butyl octyl citrate and white carbon black into a high-speed kneading machine for high-speed kneading for 3 to 5 minutes to reach temperature of 90 to 100 DEG C; 2, performing low-speed kneading for 1 minute, simultaneously pouring antimony trioxide, zinc borate, a filler, aluminum hydroxide, a calcium zinc heat stabilizer, antioxidant 1010, a lubricant, processing modifier P551J, an inorganic silicate deodorant and white carbon black, then performing high-speed kneading for 6 minutes, and when the temperature reaches 120 DEG C, fully mixing evenly, pre plasticizing, and discharging; and 3, when in extrusion, screw temperature of double screws being 120 DEG C to 150 C. The process greatly improves the flame retardant property of the material, and the material has good carbon forming effect during combustion, so that secondary combustion and flame propagation of the material can be prevented.

Description

technical field [0001] The invention relates to an environment-friendly cable material, in particular to a preparation process for polyvinyl chloride cable material. Background technique [0002] Polyvinyl chloride (PVC), as the most common plastic product in life, is widely used in the manufacture of various PVC pipes, PVC sheets, PVC films, PVC wallpapers, PVC cable materials, etc. It is the most widely used category among the five general-purpose plastics. [0003] PVC cable material is mainly composed of PVC resin, plasticizer, stabilizer, filler, lubricant and pigment, and is extruded and granulated by a double-stage screw extruder. Among them, the hardness of PVC cable material depends on the proportion of plasticizer in PVC formula to adjust, the more plasticizer content, the softer the cable material. Ordinary cable materials choose some conventional plasticizers to soften PVC. Due to its own characteristics and production technology, the produced cable materials ha...

AI Technical Summary

Problems solved by technology

Ordinary cable materials choose some conventional plasticizers to soften PVC. Due to its own characteristics and production technology, the produced cable materials have a strong smell, are pungent, and have a large amount of smoke, which is harmful to downstream cable production units. Front-line operators caused varying degrees of physical injury

Due to the poor quality of selected plasticizers for some cable materials, problems such as oil leakage and precipitation are caused in the produced cables, which shorten the service life of the products and pollute the environment.

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