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PE plastic particles is what?
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Polyetlen (English: Polyethylene or polyethene: Abbreviation: PE) is a thermoplastic resin (thermoplastic) is used very popular in the world (goods are consumed over 60 million tonnes) Polyethylene is an organic compound (poly) include ethylene CH2-CH2 groups linked together by hydrogen bonds no Polyethylene is prepared by polymerization of monomers ethylene (C2H4)
PHYSICAL CHARACTERISTICS sand:
Polyethylene white, slightly in non-conductive and non-conductive of heat, water and gas are not permeable.
Depending on the type of PE that have glass temperature Tg ~ - 100 ° C and the melting temperature Tm ~ 120 ° C.
PHYSICAL PROPERTIES:
Polyethylene chemical properties as saturated hydrocarbons as no solution reacts with the acid, alkali, potassium and bromine water.
At temperatures higher than 70 ° C PE poorly soluble in solvents such as toluene, xilen, amilacetat, trichlorethylene, turpentine, mineral oils ... although at high temperatures, PE is insoluble in water, in all kinds of fatty alcohols, acetone, ethyl ether, glycerin and herbal oils.
APPLICATION:
Due to the above properties, is used polyethylene coated wire, coated goods, as thin rain, containers, manufacturing equipment in the chemical industry.
CATEGORY:
Based on molecular weight, density, crystallinity and degree of crosslinking that PE is divided into 8 categories:
VLDPE (very low density PE)
LDPE (low density PE)
LLDPE (linear low density PE)
MDPE (medium density PE)
HDPE (high density PE)
UHMWPE (PE ultra-high molecular weight)
PEX or XLPE (PE crosslinking)
HDXLPE (high density PE crosslinking)
VLDPE:
As a polymer mainly linear, branched also very short.
The proportion of 0.880 to 0.915 g / cm3
Manufactured by polymerization process philosophy to high pressure.
As amorphous have absolute flexibility, very good toughness, stretch and improve environmental protection, expanding the ability mixed with other soft materials such as PVC plastics, EVA to change features it.
Used to produce shrink film, stretch film, glove, join the transformation process different types of plastics, industrial films, laminated films.
LDPE:
Gravity: 0.910 to 0.925 g / cm3
Glass temperature Tg ~ -110Oc
LLDPE:
Gravity: 0.910 to 0.925 g / cm3
MDPE:
Gravity: 0.926 to 0.940 g / cm3
HDPE:
In contrast to LDPE, HDPE is produced under low pressure with a catalytic system as chromium / silica catalysts, Ziegler-Natta or metanloxen (metallocene)
Gravity: 0.941 to 0.965 g / cm3
UHMWPE:
A type of PE has a number average molecular weight of millions sizes (from 3.1 to 5.67 million). UHMWPE is very hard to get the application to fibers and bullet casings lining.
Gravity: 0.935 to 0.930 g / cm3
PEX or XLPE:
Made by the addition of the organic peroxide (eg Dicumyl peroxide, ...) in PE in the machining process. The crosslinking method is best PE rotational molding method (Rotational molding) and infrared radiation (inradiation)
PEX is used as plastic film, pipe, wire and cable.
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18/8/2025
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