Plasticizer Is Widely Used
Plasticizer is a polymer auxiliaries, but also the environmental estrogen phthalate esters, its wide variety, the most common variety is DEHP (trade name DOP). DEHP Chemical name Di (2-ethylhexyl) phthalate, is a colorless, odorless liquid, widely used in industry.
A plasticizer is an additive that increases the flexibility of the material or liquefies the material. The addition of objects includes plastic, concrete, Plasticizer wall materials, cement and gypsum and so on. The same plasticizer is often used in different objects, but its effect is often not the same. There are more than 100 kinds of plasticizer, but the most commonly used is a group of compounds called phthalate esters. According to statistics in 2004 the world's plasticizer market, the total amount of about 5.5 million tons and towards 600 million tons forward.
Plasticizer refers to the plasticizer that increases the plasticity of the plastic, improves the flowability of the resin during molding, and makes the product flexible. Plasticizer It is usually a high boiling, hard-pressed viscous liquid or a low melting solid, Generally do not react chemically with plastic.
Plasticizer must first have good compatibility with the resin, the better the compatibility, the better plasticizing effect.Addition of plasticizer can reduce the plastic glass transition temperature, so that hard and rigid plastic becomes soft and Flexible, generally require a plasticizer colorless, non-toxic, odorless, light, heat, cold, volatile and small mobility, non-combustible and chemical stability, Plasticizer cheap and easy. In fact, a plasticizer It is impossible to meet all the above requirements.
Plasticizer based on its role in the main plasticizer, that is, Plasticizer solvent-based plasticizer; auxiliary plasticizer, that is, non-solvent-based plasticizer; catalyst-based plasticizer; according to its chemical structure is divided into phthalates , Fatty acid esters, phosphates, polyesters, epoxy esters, chlorine-containing compounds, etc. Commonly used plasticizers include dibutyl phthalate (DBP), dioctyl phthalate (DOP) , Epoxy soybean oil, tricresyl phosphate, triphenyl phosphate, dioctyl sebacate, chlorinated paraffin, etc. PVC is the main end user of these plasticizers. The main application areas of plasticizer PVC are Wires, cables, Plasticizer flooring and wall veneers, building materials, automotive and packaging materials.
Plasticizer in all plastic additives in the largest amount of China's total capacity of about 1 million tons, plasticizers to good overall performance, excellent price of phthalate-based, the world's four major production and consumption countries and regions - US, Western Europe, Japan, China's consumption accounted for 70% to 90%.