Add: RM101&201, BLD. 3TH, No.2, lane 6th, Laokeng Ind. Zone, Kengzi, Pingshan New District, Shenzhen City, China
There are two types of plastics: thermoplastics and thermosetting polymers. Thermoplastics are the plastics that do not undergo chemical change in their composition when heated and can be molded again and again. Examples include polyethylene, polypropylene, polystyrene, polyvinyl chloride, and polytetrafluoroethylene (PTFE). Common thermoplastics range from 20,000 to 500,000 amu, while thermosets are assumed to have infinite molecular weight. These chains are made up of many repeating molecular units, known as repeat units, derived from monomers; each polymer chain will have several thousand repeating units. Thermosets can melt and take shape once; after they have solidified, they stay solid. In the thermosetting process, a chemical reaction occurs that is irreversible. The vulcanization of rubber is a thermosetting process. Before heating with sulfur, the polyisoprene is a tacky, slightly runny material, but after vulcanization the product is rigid and non-tacky. Other classifications are based on qualities that are relevant for manufacturing or product design. Examples of such classes are the thermoplastic and thermoset, elastomer, structural, biodegradable, and electrically conductive. Plastics can also be classified by various physical properties, such as density, tensile strength, glass transition temperature, and resistance to various chemical products.
- Mold Design Applied Skills
- Shot Injection Molding Important Pr...
- France New Customers Visit Abery
- Plastic Parts Sustainable
- ISO9001 Haitian 7 Years Experience ...
- OEM Plastic Injection Mould For Med...
- Japanese Home Appliance New Product...
- Mold Design Internal Requirements
- Plastic Parts Mature Technology
- New Trends In The Development Of Pl...
- Polyethylene Terephthalate
- Acrylonitrile Butadiene Styrene
- Polyvinyl Chloride
- Plastic Injection Moulding
- Plastic Recycling
- Plastic Material Names And Acronyms
- Uses Of Plastics
- Plastic Welding
- What Are The Effects Of Ozone On Mold?