Liquid barium-zinc composite heat stabilizer for high-transparency PVC product

Abstract

The invention discloses a liquid barium-zinc composite heat stabilizer for a high-transparency PVC product, which relates to the technical field of plastic additives. The invention relates to a liquid barium-zinc composite heat stabilizer for a high-transparency PVC product. The liquid barium-zinc composite heat stabilizer consists of the following components in percentage by weight: 18-23 parts of mixed organic acid, 22-27 parts of barium hydroxide monohydrate, 10-13 parts of zinc oxide, 5-10 parts of composite phosphite ester, 8-10 parts of an additive, 8-10 parts of a chelating agent, 1-2 parts of an antioxidant, 1-2 parts of an anti-precipitation agent and 20-25 parts of a solvent. The total amount of the components is 100 parts. According to the liquid barium-zinc composite heat stabilizer for the high-transparency PVC product, the composite phosphite ester, the additive, the chelating agent and the anti-precipitation agent are added and matched together, so that the stability of the barium-zinc composite heat stabilizer is greatly improved, precipitation or precipitation of barium and zinc is avoided, the transparency of the PVC product is ensured, and a synthetic material is simple in component and wide in source, large-scale production is facilitated, and the formula is high in flexibility, non-toxic and harmless, and meets the national green development requirements.

Description

technical field [0001] The invention belongs to the technical field of plastic additives, in particular to a liquid barium-zinc composite thermal stabilizer for high-transparency PVC products. Background technique [0002] The global environmental protection requirements are becoming increasingly stringent, human beings have increasingly strong requirements for the purification of the environment on which they live, and the pressure of regulations restricting the use of heavy metal heat stabilizers is increasing, making the development and production of heat stabilizers more non-toxic, efficient and multifunctional. The pace of direction development is accelerated. Tin-free, low-lead, low-dust and substitution of lead salts have become the focus of the development of heat stabilizers all over the world. [0003] Liquid barium-zinc composite stabilizers have different properties due to their different compositions. However, it is generally light yellow to yellow clear liqui...

AI Technical Summary

Problems solved by technology

[0004] Existing liquid barium-zinc stabilizers generally have the disadvantage of low binding transparency, that is, the existing liquid barium-zinc stabilizers will migrate from the lipid mixture to the surface of the product during processing and precipitate on the surface, adhering to Corrosion and uneven plasticization on the surface of processing machinery are mainly due to the fact that barium and zinc in the existing barium-zinc stabilizer are prone to precipitation or precipitation, and the compatibility between barium and zinc and PVC materials is low, resulting in PVC The transparency of the product is reduced. Therefore, if the combined transparency of the potassium-zinc stabilizer is improved, its application range will be further expanded, and the market prospect will be relatively broad.