High-efficiency environmental-friendly polyvinyl chloride (PVC) lubricating agent and preparation method thereof

Abstract

The invention relates to a preparation method of a polyvinyl chloride (PVC) accessory ingredient, in particular to a high-efficiency environmental-friendly PVC lubricating agent and a preparation method thereof, and belongs to the technical field of plastic products. The high-efficiency environmental-friendly PVC lubricating agent is mainly prepared by mixing the following components in parts by weight: a component A: 5 to 50 parts of fatty acid, 5 to 95 parts of metallic soap, 5 to 95 parts of carboxylic ester, 5 to 95 parts of fatty acid amide, 5 to 95 parts of fatty alcohol, 5 to 95 parts of hydrocarbon wax, 1 to 15 parts of epoxidized soybean oil, 1 to 15 parts of phosphite ester, 3 to 10 parts of polytetrafluoroethylene wax, and 2 to 5 parts of coupling agent; and a component B (whichis calculated on the basis that the total weight of the component A is 100 parts): 0.3 to 0.5 part of peroxide crosslinking agent, and 6 to 15 parts of maleic anhydride. The high-efficiency environmental-friendly PVC lubricating agent has the advantages of capability on improving the compatibility of the lubricating agent and PVC, and good lubrication effect; and meanwhile, the preparation methodof the high-efficiency environmental-friendly PVC lubricating agent is simple in process and applicable to production processing of PVC products in different stable systems.

Description

technical field [0001] The invention relates to a preparation method of a PVC auxiliary agent, in particular to a high-efficiency and environment-friendly PVC lubricant and a preparation method thereof, belonging to the technical field of plastic products. Background technique [0002] Polyvinyl Chloride (PVC for short) is one of the five general-purpose plastics in the world. Insulation performance, widely used in light industry, agriculture, building materials, packaging, electric power and other departments, occupies a pivotal position in the field of plastics. Since the PVC molecular chain contains unstable chlorine atoms, some defective structures will inevitably be produced during processing, and these defective structures will make PVC extremely prone to degradation. PVC has strong polarity, and there is strong interaction and friction between the molecular levels in the melt and between the melt and the metal during processing, so there are high melt viscosity, high...

AI Technical Summary

Problems solved by technology

Most of the PVC lubricants reported in a small number of domestic patents are liquid, which has high requirements on the production process, which is not conducive to the process simplification and production of fine chemical enterprises. At the same time, the significant reduction in the mechanical properties of materials has been criticized by the industry.

The existing technology is mostly a mixture of one or two lubricants, which has a relatively narrow scope of application and cannot cope with the production technology of PVC products with different stable systems; in addition, the single use of stearic acid or paraffin as a lubricant in the process of high-temperature and high-vacuum processing is likely to lead to A large amount of lubricant volatilizes and precipitates to cause loss; a large amount of zinc stearate may cause PVC zinc burning, which seriously affects the appearance of the product; amide lubricants are effective, but the cost is too high, which limits their use in the PVC field; finally, static electricity Injury and dust pollution are also a major problem plaguing the PVC industry

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