How to identify the kinds of plastics?!
Plastic and rubber are high molecular material, mainly composed of two kinds of carbon and hydrogen atoms, and some contain a small amount of oxygen, nitrogen, chlorine, fluorine, silicon, sulfur atoms, its special properties, use is also special. At room temperature, the plastic is not solid, hard, and tensile deformation of rubber hardness is not high., elastic, can be stretched, and stop pulling back to normal. This is due to differences in their molecular structure. Another difference is the plastic can be repeatedly recycled, while the rubber cannot be directly recycled, can only be processed and then reclaimed rubber, plastic and rubber. Available in the form of more than 100 to 200 degrees at 60 to 100 degrees. The morphological similarity does not include plastic rubber.
Broadly speaking, rubber is actually a kind of plastic, plastic including rubber. It is introduced in detailGeneral industrial double-sided adhesive, can be divided into acrylic rubber and rubber Department of the two categories. And these two categories, but also can be divided into two types of substrate and no substrate (there is substrate: in the glue with a layer of cotton, strengthening the amount of double-sided adhesive itself and strength, no substrate: pure gum, to ensure the transparency of double-sided adhesive). Because the main body of rubber adhesive is CR, it is used in rubber products and is easy to react with the vulcanization system of rubber. Therefore, the weaker color of rubber products are made of acrylic rubber, the system has a substrate double sided adhesive (the same kind of double-sided adhesive, regardless of substrate or no substrate, are made of its own glial thickness to distinguish.
The most essential difference between plastics and rubber is plastic deformation when plastic deformation occurs, while rubber is an elastic deformation. In other words, it's not easy to restore the original state after plastic deformation, and rubber is relatively easy. Plastic elasticity is very small, usually less than 100%, while rubber can reach 1000% or more. Most of the plastic molding process is completed, the product process will be completed; and after the rubber forming process, but also need vulcanization process.
