Preparation method of low-smoke and non toxicity cable sheath

Abstract

The invention discloses a preparation method of a low-smoke and non toxicity cable sheath, which belongs to the technical field of cable conductor. The method comprises the following steps: 1) taking the raw materials by weight part: 40-50 parts of SG-2 type resin, 25-30 parts of plasticizer, 2-4 parts of composite stabilizing agent and 1-2 parts of anti-oxidant, grinding the raw materials, fully mixing, wherein the fineness after grinding is less than or equal to 70 mum, and obtaining a main material after grinding; 2) adding 50-60 parts of filler and 0.1-1 part of lubricant in the main material, uniformly stirring and regrinding, wherein the fineness after grinding is less than or equal to 60 mum, and obtaining the main material after regrinding; 3) controlling the temperature being 50-75 DEG C, kneading the main material for 4-10 minutes after regrinding; 4) performing plastic extrusion by controlling the temperature at 140-160 DEG C; and 5) performing plastication by controlling the temperature at 150-175 DEG C to obtain the finished product. According to the low-smoke and non toxicity cable sheath, combination of various raw materials can greatly reduce the usage of the suspension method polyvinyl chloride resin, combustion is difficult, the smoke is low even in a combustion process, poison gas is greatly reduced, and basically, no toxin is generated.

Description

technical field [0001] The invention belongs to the technical field of cables, in particular to a preparation method of a low-smoke and non-toxic cable sheath. Background technique [0002] The cable sheath is widely used in the cable production process. It is often used to wrap single or multi-strand wires and insulating layers. Now the composite performance of decoration materials is getting better and better. Although the appearance is beautiful, it will emit peculiar smell when it is heated, especially in the case of During a fire, it is easier to burn and emit poisonous gas; the mortality rate of death due to poisonous gas suffocation in fires in my country currently accounts for more than 80%. However, in the process of the traditional cable sheath preparation method, the cable sheath is flammable and toxic and the smoke is dense due to the addition of too many PVC components. SUMMARY OF THE INVENTION [0003] Purpose of the invention: The purpose of the present inve...

AI Technical Summary

Problems solved by technology

[0002] Cable sheaths are widely used in the cable manufacturing process. They are often used to wrap single-strand or multi-strand wires and insulating layers. Now the composite performance of decoration materials is getting better and better. Although the appearance is beautiful, it will emit peculiar smell when heated, especially when encountering In the event of a fire, it is easier to burn and emit poisonous gas; the death rate due to suffocation due to poisonous gas in fires in my country currently accounts for more than 80%

However, in the traditional cable sheath preparation process, because too much PVC is added, the cable sheath is flammable, toxic and dense in smoke