Non-toxic PVC Material Tube

PVC  material is not toxic, pvc material is based on polyvinyl chloride,  adding other enhanced wear resistance, flexibility and strong chemical  solvent mixture of a material. He has many natural materials do not have the advantages, but also at low prices and the pursuit of inexpensive consumer love. Is also the most common international material, the use of a wide area.

We  all know that the current food packaging bags are mostly used in  plastic products, home improvement building materials industry can be  divided into hard pvc and soft pvc two, this distinction is mainly from  the pvc raw materials are added to the softener to do the basis. As  the name suggests, soft pvc is a softener, so the product is easy to  shape, not brittle and non-toxic and non-polluting characteristics. The hard pvc material should be free of soft and easy to brittle and difficult to save the shortcomings.

Polyvinyl  chloride (English: PolyVinyl Chloride, referred to as: PVC) is a use of  a chlorine atom to replace polyethylene in a hydrogen atom of the  polymer material. PVC for the amorphous structure of the white powder, the degree of branching is small. Industrial  production of PVC molecular weight is generally in the range of 5 to 12  million, with a large polydispersity, molecular weight increases with  the reduction of polymerization temperature. No fixed melting point, 80 ~ 85 ℃ began to soften, 130 ℃ into a viscous state, 160 ~ 180 ℃ began to change into a viscous flow. Its tensile strength of about 60MPa, the impact strength of 5 ~ 10kJ / m2; has excellent dielectric properties. The  stability of light and heat is poor, above 100 ℃ or prolonged sun  exposure, it will decompose and produce hydrogen chloride, and automatic  catalytic decomposition caused by discoloration, in practical  applications must be added stabilizer to improve the stability of heat  and light. PVC  is very hard, can only be dissolved in cyclohexanone, dichloroethane  and tetrahydrofuran and a few solvents, the organic and inorganic acids,  alkali, salt are stable, chemical stability with the use of temperature  rise.