Plasticizers Are Widely Used In Industry
Plasticizer, also known as plasticizer (Taiwan Chinese, is the mainland Chinese plasticizer). Is widely used in industrial polymer additives, in the plastic processing to add this material, can enhance its flexibility, easy processing, can be legally used for industrial purposes.
Plasticizer is a polymer auxiliaries, its wide variety, is a colorless, odorless liquid, widely used in industry. Often used in plastic, rubber, adhesives, cellulose, resin, medical equipment, cables and other thousands of products. Epoxy plasticizer of the main varieties: epoxy soybean oil, Plasticizer epoxy acetyl linoleate methyl ester, epoxy furfuryl oleate and so on. In PVC products, the plasticity and stability of the characteristics of a wide range of applications. Epoxy plasticizer is a kind of excellent plasticizer prepared by epoxidation of organic fats and oils in organic fats and oils. It is extremely toxic and has the advantages of non-toxic, Plasticizer heat-resistant and light-resistant stability.
The role of plasticizers in high-quality plastic products is indispensable. Its variety structure is constantly adjusting the change, the development speed of new technology is accelerating, the new variety is more and more, the detection means is more advanced, the evaluation method is more reasonable, the plasticizer in the "development - application - toxicology test - risk assessment - Re-development "of the cycle of continuous progress, Plasticizer the effect is even better. Therefore, the correct use of plasticizers is the key to the healthy development of the industry. And to do this, plasticizer business should be in the structural adjustment efforts. Foreign countries are vigorously promoting known as non-toxic or environmentally friendly and biodegradable plasticizer.
Plasticizers are usually a "solvent-like" substance that can improve their processability, flexibility, flexibility, stretch or expansibility when added to substances such as plastics, resins or elastomers. The addition of a plasticizer reduces the melt viscosity, the glass transition temperature and the elastic modulus of the elastomer without altering the basic chemical properties of the plasticized material.
Plasticizer can change the nature of the polymer, generally considered:
The plasticizer isolates the distance between the macromolecules of the polymer and weakens the force (attractiveness) between the polymer molecules, that is, Plasticizer weakening the van der Waals forces between the resin molecules;
② non-polar plasticizer added to the non-polar polymer, cut off the polar part of the polymer molecules, so that it does not occur polar connection, destruction of the polymer molecules between the dipole - dipole mutual effect;
③ plasticizer is even with the force and resin to combine, Plasticizer rather than chemical (covalent bond) combination.
Therefore, where the resin can be mixed evenly, the mixture does not occur when the chemical reaction, mixing can change some of the properties of the resin, long-term retention in plastic products, change the nature of plastic products, can be used as plasticizers. The substances with these functions are mostly liquid organic compounds or low melting solids. They must be polar, compatible with resin, long in resin, have good properties for resin, Plasticizer high efficiency and inexpensive.