Acrylonitrile butadiene styrene (ABS) is a thermoplastic polymer. The most important mechanical properties of ABS are impact resistance and toughness. A variety of modifications can be made to further improve impact resistance, toughness, and heat resistance. ABS has useful characteristics within a temperature range from −20 to 80°C, it has a glass transition temperature of approximately 105°C. ABS is amorphous, meaning it has no true melting point. ABS's light weight and ability to be injection molded and extruded make it useful in manufacturing products such as musical instruments, golf club heads, luggage and protective carrying cases, small kitchen appliances, and toys.
Expanded polystyrene (EPS) is a rigid and tough, closed-cell foam. It is usually white and made of pre-expanded polystyrene beads. Due to its technical properties such as low weight, rigidity, and formability, EPS can be used in a wide range of different applications like trays, plates, bowls and fish boxes.
High-density polyethylene (HDPE) is known for its large strength-to-density ratio. The density of HDPE can range from 0.93 to 0.97 g/cm3 or 970 kg/m3. HDPE has little branching, giving it stronger intermolecular forces and tensile strength than LDPE. It is also harder and more opaque and can withstand somewhat higher temperatures (120 °C/ 248 °F for short periods). HDPE has a high chemical resistance making it a suitable material for containing chemicals, fuels, detergents and solvents.
Low-density polyethylene (LDPE) is a thermoplastic made from the monomer ethylene. LDPE is defined by a density range of 0.910–0.940 g/cm3. It has a wide range of applications, especially in soft packaging and films. LDPE can be enhanced and processed in various ways to suit specific purposes such as; longer conservation of perishables, anti-static for electronics packaging, anti-slip to accelerate machineprocessing or matters such as impact resistance and elasticity.
Linear low-density polyethylene (LLDPE) differs structurally from conventional low-density polyethylene (LDPE) because of the absence of long chain branching. LLDPE has higher tensile strength and higher impact and puncture resistance than LDPE. It is very flexible and elongates under stress. It can be used to make thin films, with better environmental stress cracking resistance. LLDPE has a high resistance to chemicals and good electrical properties. It is, however, more difficult to process than LDPE.
Polypropylene (PP) has a density between 0.895 and 0.92 g/cm³. PP is normally tough and flexible, especially when copolymerized with ethylene, allowing PP to be used as an engineering plastic. Furthermore, PP is known to have good fatigue resistance. The melting point occurs at a range from 130 to 171 °C. PP can be used for a wide variety of applications such as packaging and labeling, textiles, plastic parts and reusable containers of various types, laboratory equipment, loudspeakers and automotive components.
Polyvinyl chloride (PVC) comes in two basic forms: rigid and flexible. Our SPVC is mainly used in pipes, rigid profiles such as window frames and for a variety compounds. PVC has high hardness and mechanical properties. The mechanical properties enhance with the molecular weight increasing but decrease with the temperature increasing. The mechanical properties of rigid PVC are very good; the elastic modulus can reach 1500-3,000 MPa. The soft PVC (flexible PVC) elastic is 1.5–15 MPa. The heat stability of raw PVC is very poor, so the addition of a heat stabilizer during the process is necessary in order to ensure the product's properties. PVC is a polymer with good insulation properties, but because of its higher polar nature the electrical insulating property is inferior to non polar polymers such as polyethylene (PE) and polypropylene (PP).