A low-odor polyvinyl chloride cable material composition for automobile wiring harness and its preparation method

Abstract

The invention discloses a low-odor polyvinyl chloride cable material composition and a preparation method for automobile wiring harness, which belong to the processing and application fields of polymer materials. It is characterized in that, the parts by weight are composed of: 100 parts of high polymerization degree PVC resin, 45 to 50 parts of composite plasticizer, 5 to 8 parts of silicon dioxide, 4.0 to 5.0 parts of calcium zinc stabilizer, and 0.15 to 0.25 parts of polyethylene wax. , 0.15~0.25 parts of oxidized polyethylene wax, 0.20~0.30 parts of antioxidant DLDTP; the composite plasticizer is polyester plasticizer and low polymerization degree polycarbonate plasticizer by mass ratio of 8~10:37 ~40 compound plasticizer. The preparation steps are as follows: after mixing the PVC resin, the composite plasticizer and the calcium-zinc stabilizer, the remaining materials are added according to the formula; the mixed materials are put into a twin-screw extruder for extrusion and granulation. The invention provides a low odor polyvinyl chloride cable material composition for automobile wiring harness with low volatility and low odor and a preparation method thereof.

Description

technical field [0001] The invention discloses a low-odor polyvinyl chloride cable material composition for automobile wire harnesses and a preparation method thereof, which belong to the field of processing and application of polymer materials. Background technique [0002] Polyvinyl chloride is currently the plastic material with the largest output and the cheapest price in China. Since polyvinyl chloride can be used for hard products, it can also be used for soft products after adding plasticizers. It has excellent comprehensive properties and is widely used; therefore In the fields of automobiles, household appliances, computers and communication equipment, various electronic instruments and meters, soft polyvinyl chloride is still the main material. Soft polyvinyl chloride is co-extruded with metal conductors and then made into a special automotive wiring harness together with the connecting plug-in for installation. However, there are still many defects in the use of ...

AI Technical Summary

Problems solved by technology

The present invention finds in the test that the odor grade of the cable material for PVC automobile wiring harness developed by the aforementioned invention patent formula can reach between 2.5 and 3, and the formula design for the odor grade to be below 2.5 is very difficult. Low-molecular-weight plasticizers have not been completely replaced, and the use of additive molecular sieves, deodorants, and odor-masking agents has limited effect in reducing the irritating odor in PVC cable materials.