PP material is polypropylene, is a resin, it has high density, no side chain and is also a high crystalline linear polymer, the advantages are reflected in solvent resistance, oil resistance, weak acid and alkali resistance, today for everyone to introduce the performance and classification of pp materials.
First, the performance of pp material
1, pp material it is very good physical properties and chemical properties. Its molding performance is very good, but because of the relatively large hand shrinkage of this material, it is still unable to produce some high-precision products. At that time, pp material its surface gloss is very good, and it is very easy to color.
2, pp material its crystallinity is very high, and its structure is very regular, so it is very good mechanical properties. It has excellent stretchability. And it also has a very outstanding performance, that is, its bending fatigue resistance is superb, can withstand hundreds of bends without damage.
3, pp material it also has a very good heat resistance, it can be more than 100 degrees Celsius temperature for product sterilization work. It is capable of use in very harsh environmental conditions. In addition, it has corrosion to two high-strength corrosive substances, concentrated sulfuric acid and concentrated nitric acid, and has very good stability for any other chemical reagents. So it is very corrosion resistant.
Second, what are the classifications of PP
1. According to the spatial position of methyl (-CH3): it is divided into three categories: isometric, inter-gauge and random;
2, according to the polymerization process: isotactic polypropylene polymerization can be divided into mud method, ontology method, solution method and gas phase method and other methods;
3, according to the use: can be divided into flat wire (narrow band), fiber, film, extrusion, blow molding, injection molding and other levels;
4, according to the monomer: the types are divided into homopolymer polypropylene and copolymer polypropylene.
The above is the performance and classification of pp material introduction, have questions can be contacted by private message at any time.