Some higher glass transition temperature of the plastic, the temperature for preparation of soft products and improving the processing of the melt flow properties, it requires a certain amount of plasticizer. These small molecular weight oily plasticizer and polymer has good compatibility, they are distributed in the polymer chains, reduces their intermolecular force, so that at a certain temperature and pressure tends to molecular chain movement, reach molding purposes. Therefore, plasticizers reduce the plastic glass transition temperature and the lowest molding temperature. Typically the glass transition temperature lower value level plasticizer volume fraction is proportional
And sub-divided into the main plasticizer plasticizer plasticizer two categories: primary plasticizer is characterized by good compatibility with the resin, plasticizers, high efficiency, resistance to migration, low volatility, low oil (water ) extraction resistance, low temperature flexibility. Sub plasticizer compatibility is poor, mainly with the main plasticizer used in conjunction with lower cost, it is also known as extenders.Metal soap
75-80% of the total amount of plasticizer used in PVC, mainly of 6-11 carbon atoms, fatty alcohol esters of phthalic acid synthesis, the most important is the phthalate octyl (DOP), is a standard plasticizer. In addition, epoxy, phosphoric acid esters and sebacic acid ester plasticizers and chlorinated paraffin class increment like.Impact modifier for PVC
pvc stabilizer is the use of scientific "molecular design" theory, advanced surface treatment technology, WSD PVC stabilizer a special composite technology and strict quality control system development and production of the collector stabilizer, external lubricants, antioxidants, PVC Heat stabilizer coupling agents, dispersing agents as one of the high-efficiency,one pack stabilizer high-tech multi-functional product.
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