Magnesium-aluminum-zinc modified non-toxic compound stabilizing agent for PVC (Polyvinyl Chloride) foaming material

Abstract

The invention relates to a magnesium-aluminum-zinc modified non-toxic compound stabilizing agent for a PVC (Polyvinyl Chloride) foaming material. The stabilizing agent is prepared from a fatty acid calcium zinc composition, an antioxidant, acetylacetone calcium or acetylacetone magnesium, hydrotalcite, dehydroacetic acid or sodium dehydroacetate, trihydroxyethyl isocyanurate, macromolecular ester-group calcium, calcium carbonate or talcum powder according to a weight ratio. A formula of the stabilizing agent adopts the trihydroxyethyl isocyanurate so that a product has good whiteness and machining stability; the fatty acid calcium zinc composition and the macromolecular ester-group calcium in the formula can improve the product machining performance and the product compatibility so that the product comprehensive performance is the best; the stabilizing agent is used for extruding a PVC foaming sheet material and has the advantages of good stabilizing effect, smooth machining and good whiteness; the mechanical property meets various international requirements and the difficulty that an AC (Azodicarbonamide) foaming agent is added and is easily subjected to a color reaction with a substance with the high activity is overcome; and the magnesium-aluminum-zinc modified non-toxic compound stabilizing agent has the advantages of no toxin and environmental friendliness.

Description

technical field [0001] The invention relates to a stabilizer, in particular to a magnesium-aluminum-zinc modified non-toxic composite stabilizer for PVC foaming materials. Background technique [0002] PVC material has been widely used because of its wide range of uses, good processing performance, low manufacturing cost, corrosion resistance, insulation and other good characteristics. At present, PVC materials and related products can be seen everywhere in people's lives, such as PVC foam materials, PVC stationery, PVC threading pipes, PVC cable insulation, PVC water pipes and other pipes, PVC plastic doors and windows, PVC plastic bags, PVC film, PVC leather etc. In actual use, PVC materials are often added with stabilizers, lubricants, auxiliary processing agents, colorants, impact agents and other additives to make them have excellent stability, toughness, ductility, strength, weather resistance and excellent Excellent physical and chemical properties such as geometric...

AI Technical Summary

Problems solved by technology

Among them, lead salt heat stabilizers have excellent thermal stability, but lead salts and heavy metals are toxic and harmful substances, which cause great harm to the human body and the environment, and have gradually withdrawn from the stabilizer market; organotin stabilizers are still effective. Widely used in the production of transparent products, but the price is high, and the product has a peculiar smell, which is harmful to the human body; ordinary metal soaps usually need to be used together, and are easy to precipitate during processing, and have poor thermal stability; rare earths are a relatively new type of soap Stabilizers have good overall performance and have been widely used in recent years, but some rare earth compounds are also toxic, and affected by the shortage of rare earth resources, their prices are constantly rising, so their use is also subject to certain restrictions, so the development price Appropriate, good performance, efficient and environmentally friendly heat stabilizers are of great significance to the field of PVC processing

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