What is PET sheet and what is the difference between it and PVC PP PCWhat is PET sheet and what is the difference between it and PVC PP PC
PP is a semi-crystalline material. It is harder than PE and has a higher melting point. Since homopolymer PP is very brittle when the temperature is higher than 0°C, many commercial PP materials are random copolymers with 1 to 4% ethylene or clamp copolymers with higher ethylene content. Copolymer PP material has lower thermal distortion temperature (100°C), low transparency, low gloss, low rigidity, but has stronger impact strength. Typical applications of PP polypropylene: automotive industry (mainly using PP containing metal additives: mudguards, ventilation ducts, fans, etc.), appliances (dishwasher door liners, dryer ventilation ducts, washing machine frames and covers, refrigerators Door liners, etc.), consumer goods (lawn and gardening equipment such as lawnmowers and sprinklers, etc.).
PC is an amorphous engineering material with particularly good impact strength, thermal stability, gloss, anti-bacterial properties, flame retardant properties and pollution resistance. The otched Izod impact stregth of PC is very high, and the shrinkage rate is very low, generally 0.1%~0.2%. PC has good mechanical properties, but poor flow properties, so the injection molding process of this material is more difficult. When choosing what quality PC material, it should be based on the final expectation of the product. If the plastic parts require high impact resistance, then use low-flow PC materials; on the contrary, you can use high-flow PC materials, which can optimize the injection molding process. Typical applications of PC polycarbonate: electrical and commercial equipment (computer components, connectors, etc.), appliances (food processing machines, refrigerator drawers, etc.), transportation industry
(The front and rear lights, dashboard, etc. of the vehicle).
PS polystyrene is a transparent, non-crystalline material. PS has very good geometric stability, thermal stability, optical transmission characteristics, electrical insulation characteristics and a very small tendency to absorb moisture. It can resist water and diluted inorganic acids, but it can be corroded by strong oxidizing acids such as concentrated sulfuric acid, and it can swell and deform in some organic solvents. Typical application range: product packaging, household goods (tableware, trays, etc.), electrical (transparent containers, light source diffusers, insulating films, etc.).
The glass transition temperature of PET is about 165℃, and the crystallization temperature of the material ranges from 120 to 220℃. PET has strong hygroscopicity at high temperature. For glass fiber reinforced PET materials, bending deformation is very easy to occur at high temperatures. The crystallinity of the material can be increased by adding a crystallization enhancer. Transparent products processed with PET have gloss and heat distortion temperature. Special additives such as mica can be added to PET to minimize bending deformation. If a lower mold temperature is used, transparent products can also be obtained using non-filled PET materials. Typical applications: automotive industry (structural components such as reflector boxes, electrical components such as headlight reflectors, etc.), electrical components (motor housings, electrical couplings, relays, switches, internal components of microwave ovens, etc.). Industrial applications (pump housings, manual instruments, etc.).
PE-LD low-density polyethylene typical application range: bowls, cabinets, pipe connectors
Typical applications of PE-HD high-density polyethylene: refrigerator containers, storage containers, household kitchen utensils, sealing lids, etc.
PVC material is a kind of plastic decoration material. PVC is the abbreviation of polyvinyl chloride material. It is a material made of polyvinyl chloride resin as the main raw material, adding an appropriate amount of anti-aging agents, modifiers, etc., through mixing, calendering, and vacuum suction. PVC material has the characteristics of light weight, heat insulation, heat preservation, moisture-proof, flame-retardant, and easy construction. There are many specifications, colors, patterns, and very decorative. It can be applied to the decoration of indoor walls and ceilings. It is one of the most widely used decorative materials in plastic materials. The advantages of PVC gussets mainly include the following aspects: 1. Light weight, heat insulation, heat preservation, moisture proof, flame retardant, acid and alkali resistance, and corrosion resistance. 2. Good stability, dielectric properties, durability, anti-aging, easy welding and bonding. 3. Strong flexural strength and impact toughness, high elongation when broken. 4. It is extremely easy to process and shape through the processes of kneading, mixing, drawing, pelletizing, extrusion or die-casting, which can meet the needs of various profile specifications. 5. The surface is smooth, the color is bright, and it is very decorative, and it has a wide range of decorative applications. 6. The construction process is simple and the installation is more convenient. Huashenglong blister packaging provides