Process for preparing rubber cable sheath material

Abstract

The invention discloses a process for preparing a rubber cable sheath material. The method comprises the following steps of mixing 25 percent of chlorinated polyethylene and 15 percent of ethylene-propylene-diene monomer in an internal mixer at 70-80 DEG C for 3-4 minutes; adding 0.5 percent of lead monoxide, 20 percent of calcium carbonate, 0.5 percent of N-cumene-N'-phenyl p-phenylenediamine, 3 percent of antimonous oxide, 0.1 percent of magnesium oxide, 4 percent of paraffin hydrocarbon oil and 5 percent of chlorinated paraffin into the internal mixer; adding 1 percent of paraffin, 8 percent of carbon black, 5 percent of precipitated silica, 10 percent of talc powder and 0.1 percent of gamma-aminopropyltriethoxysilane to form a mixed sizing material; storing the rolled sizing material for 7-9 hours at room temperature; and mixing in the internal mixer; adding 1.5 percent of dicumyl peroxide and 1.3 percent of 1,3,5-triallylisocyanuric acid when the mixing temperature is 90-120 DEG C, and mixing for 0.5-1.5 minutes. The material can pass a minus 40 DEG C low-temperature brittle experiment, has excellent low temperature resistance, has an oxygen index of more than 32, and is good in flame retardant performance.

Description

technical field [0001] The invention relates to a preparation process of a sheath, in particular to a preparation process of a rubber cable sheath material. Background technique [0002] China has a vast land, which makes the climate very different, and the huge temperature difference puts forward higher requirements for our cable materials. The temperature in the northern region can often reach minus 40°C, and the general equipment is in an unattended area. Cables working under such conditions should have good low temperature resistance and certain flame retardancy. General plastics, chlorinated poly Vinyl rubber doesn't work well at these low temperatures. Contents of the invention [0003] The purpose of the present invention is to provide a preparation process of rubber cable sheath material. The rubber cable sheath obtained by the preparation process can pass the low-temperature embrittlement test at minus 40°C, has excellent low-temperature resistance, and has an ox...

AI Technical Summary

Problems solved by technology

The temperature in the northern region can often reach minus 40°C, and the general equipment is in an unattended area. Cables working under such conditions should have good low temperature resistance and certain flame retardancy. General plastics, chlorinated poly Vinyl rubber doesn't work well at these low temperatures

Images