Lead salt stabilizer is inexpensive, has good thermal stability and is widely used. However, the powder of lead salts is very small.BASF light stabilizer Tinuvin 622 supplier  In ingredients and mixtures, its dust can cause lead poisoning when inhaled. Therefore, scientific and technical personnel developed a new type of composite lead salt heat stabilizer. The composite additive adopts symbiotic reaction technology, which mixes tri-salt, di-salt and metal soap with the original ecological particle size and various lubricants in the reaction system to ensure the full dispersion of the heat stabilizer in the PVC system. At the same time, it is melted together with the lubricant to form granules, avoiding the poisoning caused by lead dust. The composite lead salt stabilizer includes heat stabilizer components and lubricant components required for processing, and is called a full package heat stabilizer. Through this meeting, we can clearly see that during the transition period of stabilizers to environmental protection, industry experts and enterprises have been working hard in the process of meeting the needs of downstream products and completely solving process problems. After in-depth research, they have made progress in product technology and technology. Rapid development. Second-generation calcium zinc stabilizers replace zinc-based tin and methyl tin in food and pharmaceutical packaging, including powders, pastes, and liquids, as well as standard and nontoxic. This method of adding UV stabilizer requires extended stirring time. But prolonged agitation can lead to air and carbon dioxide and even flocculation of the substrate. In addition, coating chemists will face further problems: the range of UV stabilizer products suitable for this use is rather narrow. One is to use organotin stabilizer, which has the advantages of good stability and low consumption. It is mainly used for high-transparency hard and soft products. However, most organotin stabilizers are poisonous and have special odor. Although the color is good at the beginning of processing, the color changes quickly in the later stage. , dark spots, the second is to use calcium stearate and zinc stearate with chelating agent. 2. Fluoroplastics with good flame retardancy have a high oxygen index. (3) Good processing type. The barium-zinc stabilizer is easy to disperse uniformly in the resin and has good compatibility with the resin. Non-stick roll. Metal soap has good processability and lubricity. Dibutyltin in organotin has good processing performance, but maleate has poor processing performance and is easy to mix and stick to rollers, so it must be equipped with lubricants. Auxiliary stabilizers Auxiliary stabilizers include phosphite, epoxidized soybean oil, hindered phenol, etc., which mainly rely on the synergistic effect with metal stabilizers to improve the stabilization effect, and are generally called co-stabilizers. Mesoaminocrotonate, The development of calcium and zinc stabilizers has made great progress and can replace lead salt stabilizers in many fields.Poly-(N-β-hydroxyethyl-2,2,6,6-tetramethylpiperidyl-1-ethanol) succinate manufacturer  However, there are still gaps in thermal stability, especially in harsh environments such as high-temperature wire and cable, large-diameter thick-walled pipes, and large injection-molded parts. Therefore, lead salt stabilizers will exist for a long time. In addition to the above additives, flame retardants, foaming agents, antistatic agents, etc. can also be added to plastics to meet different usage requirements. Specifically, common composite plastic heat stabilizers include: liquid barium-zinc compound; the main components of non-toxic liquid calcium-zinc stabilizer are calcium stearate, calcium ricinoleate, zinc stearate, zinc ricinoleate, Epoxidized soybean oil, UV absorber, etc. Liquid calcium and zinc stabilizers are generally selected from fatty acid calcium salts and zinc salts with less carbon; liquid barium-cadmium and liquid barium-cadmium-zinc composite appraisers are mainly used for the processing of soft polyvinyl chloride products. Note: Mood stabilizers are also known as mood stabilizers.UV-622 factory  Standard mood stabilizers are drugs that meet or substantially meet the five criteria for mood stabilizers. Currently, the most standard clinical mood stabilizer is lithium, followed by valproate, lamotrigine, carbamazepine and oxcarbazepine.

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