High-polymer heat-resistant polyvinyl chloride based on multicomponent rare-earth heat stabilizer

Abstract

The invention provides a high polymer heat-resistant polyvinyl chloride based on a multi-element rare earth heat stabilizer, the polyvinyl chloride includes high molecular weight polyethylene, trioctyl trimellitate, liquid barium zinc, a multi-element rare earth heat stabilizer and low Molecular polyethylene wax, wherein the preparation method of the multi-element rare earth heat stabilizer is: under an inert environment, add palladium chloride and triphenylphosphine into n-hexane, stir evenly, add 4-bromopropiophenone, and then drop three Phenyl lanthanum solution, continue to react after the dropwise addition, separate and purify to obtain the multi-element rare earth lanthanum palladium metal compound; add the multi-element rare earth lanthanum palladium metal compound into nitric acid and stir, and mix rapidly with the ethanol mixed solution of malic acid and salicylic acid, then drop Add sodium hydroxide aqueous solution, heat to react, vacuum filter, wash and dry to obtain multi-element rare earth heat stabilizer. The polyvinyl chloride prepared by the invention has a high degree of polymerization, good synergistic effect among various components, and can remarkably improve the heat resistance, mechanical properties, corrosion resistance and other properties of the polyvinyl chloride material.

Description

technical field [0001] The invention belongs to the technical field of polyvinyl chloride materials, and in particular relates to a high-polymer heat-resistant polyvinyl chloride based on a multi-element rare earth heat stabilizer. Background technique [0002] my country is a big producer of polyvinyl chloride, but not a strong country of polyvinyl chloride production. Polyvinyl chloride is a versatile material with high cost performance, but it also has inherent disadvantages such as poor thermal stability, poor impact resistance, and unstable plasticizing effect. In addition, there is a single variety of polyvinyl chloride resin in my country and a lack of high-end products. The essence of special resins is to overcome the above defects by the best means, so that they can be applied to different specific fields. [0003] Rare earth heat stabilizers are mainly lanthanum, cerium, praseodymium oxides, chlorides and organic acid salts, etc., and can be used as a single system ...

AI Technical Summary

Problems solved by technology

Known by above-mentioned prior art, by carrying out organic modification to rare earth element, make the compatibility of rare earth thermal stability and polyvinyl chloride good, improve the stabilizing effect of polyvinyl chloride beyond traditional stearic acid rare earth heat stabilizer, but At present, the functionality of rare earth heat stabilizers is still relatively single, and research on multifunctional rare earth composite stabilizers is still rare