Preparation and application of novel environment-friendly foaming PVC specific uracil zinc composite stabilizer

Abstract

The invention relates to the technical field of a chemical stabilizer, and particularly discloses a preparation and an application of the novel environment-friendly foaming PVC specific uracil zinc composite stabilizer. The uracil zinc composite stabilizer is prepared by compounding uracil metal salt by uracil and zinc nitrate under the catalyst condition; according to the setting formula, compounding hydrotalcite, antioxygen, lubricant, zinc stearate and assistant thermal stabilizer and uracil zinc metal salt, and preparing uracil zinc composite thermal stabilizer. The uracil zinc composite stabilizer can replace lead cadmium salt type poisonous stabilizer, and has good compatibility and dispersibility with PVC (polyvinyl chloride); moreover, the composite stabilizer has relatively good thermal stability, light stability and coloring force. Compared with ordinary zinc stearate, the zinc content is improved, and the stabilizer has very good effect of inhibiting zinc burning; the ageing performance in later period and the sunproof weather resistance are significantly improved; the foaming PVC industry has wide application prospect.

Description

technical field [0001] The invention relates to the technical field of chemical stabilizers, and specifically designs the preparation and application of a novel environment-friendly foamed PVC special-purpose uracil-zinc composite stabilizer. Background technique [0002] Foamed plastics, also known as porous plastics, are resin-based plastics filled with countless tiny cell structures; polyvinyl chloride (PVC) foamed plastics are widely used in insulating materials and daily-use materials due to their low price and excellent performance. Plastic products, compared with other foam plastics, PVC foam plastic itself has better flame retardancy, and is widely used in furniture, construction, automobile, advertising, decoration and other industries; in developed countries such as the United States, France, Germany, Switzerland and Korea In China, PVC foam is widely used in wall partition materials, and has achieved very considerable environmental effects and economic benefits; i...

AI Technical Summary

Problems solved by technology

[0003] PVC heat stabilizer is a kind of compound that can inhibit the thermal degradation of PVC resin. It is an indispensable additive in PVC molding formula; before a suitable heat stabilizer is developed, PVC is still a kind of material with no practical value. The development of stabilizer technology can drive the improvement of PVC processing performance and product performance; the more commonly used heat stabilizers in the PVC industry include lead salts, organotin, metal soaps, rare earths and calcium zinc stabilizers; lead salts Stabilizer is the most commonly used heat stabilizer for PVC. It is cheap and has good thermal stability, but it is highly toxic and harmful to production workers and the environment. In recent years, the consumption has shown a downward trend; since organic stabilizers do not contain metal elements at all, they can completely solve the problem of heavy metal pollution and have attracted widespread attention; but pure organic heat stabilizers also have a fatal flaw that is poor thermal stability. Existing organic heat stabilizers are generally only used as auxiliary stabilizers for metal heat stabilizers; with the deepening of research on organic heat stabilizers, new organic heat stabilizers have been developed and released in recent years, and their effects are getting better and better. Nitrogen-containing organic heat stabilizers are particularly effective in stabilizing organic heat stabilizers. Therefore, the combination of environmentally friendly zinc-based and organic compound-based heat stabilizers will surely gain new development momentum and market space. Tendency to develop into a primary stabilizer