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Analysis on the 6 major development trends of domestic plastic additives
Plastic additives are an important part of the plastics processing process. The addition of plastic additives provides better performance for plastics, enabling them to be better applied to life production. With the development of the times, plastic additives are also constantly innovating and developing, so what is the development direction of plastic additives? Xiaobian takes everyone to look at:
1. New functional additives research continues to be active
Due to the development of new structures, polymers with excellent performance have not made much progress. Functional additives that meet the requirements for polymer modification have become the main targets for the development of plastics processing and auxiliaries worldwide. The more active areas include Fluoropolymer processing aid for olefin plus L operation; nucleating agent for improving transparency, gloss and mechanical properties of incompletely crystalline resins such as PP, PBT, PET, etc., reducing environmental pollution and promoting degradation of resin Degrading agents and biodegrading agents; infrared absorbing agents that impart temperature-maintaining properties to agricultural films; anti-fog drops for improving the surface properties of films; and compatibilizers required for plastic blending alloys.
2. The molecular structure of the additive is improving day by day.
The functional group structure of the auxiliary agent can be improved to improve the application performance of the auxiliary agent. For example, the structure of N-substituted alkoxylated HALS and hindered ketone-like HALS greatly reduces the basicity of traditional tetramethyl or pentamethyl-purine HALS, and the stability of the hindered amine is solved by a certain degree of stability. The anti-allergic problem in the application of the agent, the semi-hindered phenolic antioxidant is far superior to the traditional fully hindered phenolic antioxidant; the fluorophosphoric acid vinegar and the phosphite-containing auxiliary antioxidant hydrolyzing stabilizer with an amine group Significantly increased.
3. Auxiliary development research tends to develop low-toxicity, resistance-extracting, non-polluting development of Cd and Pb stabilizers. Ba-Zn, Ca-Zn, Mg-Zn, Mg-AI-Zn, etc. The composite metal heat stabilizer and the organotin and organic antimony stabilizers are developed rapidly and consume large amounts; vitamin E (mainly a-tocopherol, or ATP) has been put into practical use as a polyolefin "green" antioxidant. As a substitute for future BHT, the application of Jiguo shows that the combination of ATP and phosphite vinegar can significantly improve the processing stability and weather resistance of polyolefin; the development of alternatives for olfactory phenyl ether fluorene flame retardant has begun; chlorofluoro The pace of research on alternatives to hydrocarbons (CFCs) is accelerating, and alternatives to CFCs for blowing agents and deodorizing propellants are on the market. Most companies use HCFCs instead of CFCs to achieve complete replacement of CFCs with HFCs and carbon-absorbing hydrocarbons. Efficient, precise, convenient and safe, granular free-flowing bodies and masterbatch printing soluble small packages have been introduced one after another. This aspect solves the problem of dust pollution in the operating environment, and on the other hand provides convenience for metering noise.
4. Auxiliary multi-functional trend
The development of multi-functional additives has made great progress, and anti-static plasticizers, flame-retardant plasticizers, and multi-functional stabilizers have all come out.
5. Compound additives and assembly technology are progressing rapidly
According to the principle of synergy between various additives, the combination of additives into a package helps to facilitate plastic processing and full automation. The compound type products are mostly found in the hindered phenol main antioxidant and the phosphite auxiliaries auxiliary antioxidant system, and the wheat auxiliaries are mainly used in the field of polyvinyl chloride processing.
6. Auxiliary polymer quantitative trend
Development trends in stabilizers, plasticizers, and flame retardants reflect this trend. In terms of stabilizing auxiliaries, the high 150 molecular weight hindered amine light stabilizer also exhibits a thermal oxidation resistance, the high molecular weight plasticizer has resistance to extraction; the heat resistance of the high molecular weight flame retardant and the compatibility with the resin are obtained. Improved.