Low-odor polyvinyl chloride cable material composition for automobile wire harnesses and preparation method for low-odor polyvinyl chloride cable material composition

Abstract

The invention relates to a low-odor polyvinyl chloride cable material composition for automobile wire harnesses and a preparation method for the low-odor polyvinyl chloride cable material compositionand belongs to the field of processing and application of macromolecular materials. The low-odor polyvinyl chloride cable material composition is characterized by being prepared from the materials inparts by weight: 100 parts of PVC resin with high polymerization degree, 45-50 parts of compounded plasticizer, 5-8 parts of silicon dioxide, 4.0-5.0 parts of calcium-zinc stabilizer, 0.15-0.25 part of polyethylene wax, 0.15-0.25 part of oxidized polyethylene wax and 0.20-0.30 part of antioxidant DLDTP, wherein the compounded plasticizer is prepared through compounding a polyester plasticizer anda polycarbonate plasticizer with low polymerization degree according to a mass ratio of (8 to 10): (37 to 40). The method comprises the preparation steps: mixing the PVC resin with the compounded plasticizer and the calcium-zinc stabilizer, and then, adding the rest of materials according to a formula; and feeding the mixed material into a twin-screw extruder, and carrying out extruded granulating. According to the low-odor polyvinyl chloride cable material composition for the automobile wire harnesses and the preparation method for the low-odor polyvinyl chloride cable material composition, provided by the invention, the low-odor polyvinyl chloride cable material composition has the advantages of low volatilization and low odor.

Description

Technical field [0001] A low-odor polyvinyl chloride cable material composition for automobile wiring harness and a preparation method thereof belong to the processing and application field of polymer materials. Background technique [0002] Polyvinyl chloride is currently the largest plastic material with the lowest price in China. Polyvinyl chloride can be used for hard products, and it can also be used for soft products after adding plasticizers. It has excellent comprehensive performance and wide range of uses; therefore In the fields of automobiles, household appliances, computers and communication equipment, various electronic instruments and meters, soft PVC materials are still the main products. The soft polyvinyl chloride and the metal conductor are co-extruded and compounded together with the connector to be made into a dedicated automobile wiring harness for installation. However, there are still many deficiencies in the use of automotive wiring harnesses based on pol...

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.