Diethylhexyltin Diacetate (DEHT or DEHT-DOT), as a highly efficient organotin compound, is widely used in the field of plastic stabilizers, especially in the processing and performance improvement of polyvinyl chloride (PVC) materials. plays an important role. Its unique chemical structure and performance characteristics make it an ideal additive for improving the thermal stability, light stability and aging resistance of plastic products. The application and advantages of dioctyltin diacetate in plastic stabilizers are described in detail below.
Enhanced thermal stability
PVC is prone to dehydrochlorination during high-temperature processing or long-term use, resulting in material discoloration and reduced mechanical properties. As a thermal stabilizer, dioctyltin diacetate can effectively capture free radicals generated by the decomposition of PVC and inhibit the dehydrochlorination reaction, thereby maintaining the thermal stability of the material. It chemically reacts with unstable chlorine atoms in PVC to form a stable complex, which reduces unstable factors inside PVC and extends the service life of the product.
Improved photostability
Light exposure is one of the main causes of aging of PVC materials. Dioctyltin diacetate has good light stability and can effectively resist the damaging effects of ultraviolet rays on PVC and reduce the yellowing and embrittlement of materials caused by light. By absorbing or shielding ultraviolet rays, it can protect the molecular structure of PVC from damage and maintain the transparency and beauty of plastic products, which is especially important for plastic products used outdoors.
Anti-aging properties
Plastic products will suffer from various aging processes such as oxidation and thermo-oxidative aging during long-term use and environmental changes. Dioctyltin diacetate forms a protective layer that prevents oxygen and other harmful substances from penetrating into the interior of PVC and delays the aging process. Its presence can also improve the weather resistance of PVC and maintain good performance even in harsh climate conditions.
Processing performance optimization
Dioctyltin diacetate also exhibits good processing aid properties during PVC processing. It can reduce the melting temperature of PVC, improve melt fluidity, make the processing process smoother, reduce equipment wear, and effectively prevent the occurrence of processing defects such as “fish eyes”, improving the surface quality and yield of products. At the same time, its lubricity helps reduce friction heat during processing, further enhancing the physical and mechanical properties of the product.
Environmental protection advantages
Compared with traditional lead salt stabilizers, dioctyltin diacetate has lower toxicity and meets the requirements of current environmental regulations, especially for sensitive applications such as food contact grade and children’s toys. As the global awareness of environmental protection increases, more and more countries and regions have begun to restrict or ban the use of lead salt stabilizers. As an environmentally friendly alternative, the market demand for dioctyltin diacetate continues to grow.
Application areas
In the plastics industry, dioctyltin diacetate is widely used in the production of wire and cable insulation layers, PVC doors and windows, films, floors, hoses, injection molded parts and other products. Especially in products that have strict requirements on transparency and health and safety, such as food packaging materials, medical equipment, etc., its application is more common.
Conclusion
To sum up, dioctyltin diacetate, as a plastic stabilizer, has become a plastic stabilizer due to its excellent performance in improving the thermal stability, light stability and aging resistance of PVC products, as well as its advantages in environmental protection and processing performance optimization. An indispensable additive for the processing industry. With the advancement of technology and increasingly stringent environmental standards, its application in the field of plastic stabilizers will become more extensive, and it will also promote the development of the industry in a more environmentally friendly and high-performance direction.
Further reading:
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DABCO 1027/foaming retarder – Amine Catalysts (newtopchem.com)
DBU – Amine Catalysts (newtopchem.com)
High Quality 3164-85-0 / K-15 Catalyst / Potassium Isooctanoate
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