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The difference between the polyethylene, polyvinyl chloride, polystyrene and polypropylene

by:Qusheng     2020-11-11
Polyethylene PE not when color white translucent, waxy; With the hand touch products feel satiny, soft and tough; A little can elongation. Generally low density polyethylene soft, better transparency; High density polyethylene is hard. Common products: handbags, water pipe, cans, bottles, Calcium milk bottle) , daily necessities, etc. Polypropylene PP not when color with a white translucent, waxy; Lighter than polyethylene. Transparency also relatively good polyethylene, polyethylene hardened. Dyeing of PP in general injection molding machine can only color masterbatch. In ramada have strengthen the mixing effect of plasticizing components independently, also can use dye dyeing. Outdoor use products, the use of UV stabilizers and general carbon black filled in. Reworked material the use of not more than 15%, otherwise it will cause color strength degradation and decomposition. PP injection processing is generally not to be special before drying process. Modified filler usually have glass fiber, mineral filler, thermoplastic rubber, etc. Common products: basin, barrel, furniture, film, woven bag, bottle caps, bumper, etc. Polystyrene PS in transparent color. Products or landing, with crisp sound, gloss and transparency is very good, similar to the glass, sex is brittle fracture, with fingernails can trace in the products surface. Modified polystyrene as opaque. Common products: stationery, cup, food containers, household appliances shell, electrical accessories and other PVC is translucent, yellowish and luster. Transparency is better than polyethylene, polypropylene, difference in polystyrene, along with the different dosage of additives, can be divided into soft and hard polyvinyl chloride (PVC), soft soft, tough, feel sticky, hard ware hardness is higher than that of low density polyethylene, but lower than that of polypropylene, can appear in the inflectional bleaching. Common products: plate, pipe, soles, toys, doors and Windows, electrical, skins, stationery and so on polyethylene terephthalate PET transparency is very good, strength and toughness is better than that of polystyrene and polyvinyl chloride (PVC), not easily broken. Common products: often for bottle products such as coke, mineral water bottles, etc
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