1. PP === 100% plastic, polypropylene
Light and tough, easy processing, good heat resistance, high impact strength at room temperature, tensile strength, good rigidity, corrosion, difficult to paint, folding up to millions of times, excellent electrical properties, shrinkage. PP.PE.PA soft and bendable, hand touching a hard wax-like, creamy feeling, soft horny percussion sound, and PS.ABS.PC.PMMA, non-ductile, percussive sound crisp .PP combustion phenomenon and PE roughly the same, there may be a small amount of black annihilation, the flame extinguished, the smell is ranging from the oil like kerosene, non-toxic.
2 LDPE === soft, high pressure low density polyethylene
HDPE === Rigid soft, low-pressure high-density polyethylene
VHDPE === superhard soft rubber, ultra-high pressure polyethylene
Light and tough. Easy processing, good heat resistance, good toughness at low temperature, hard and impervious, but good abrasion, PE flammable, can still burn from the fire, burning yellow flame on the blue, black oblong rarely Near the flame, the phenomenon of molten plastic drips, similar to the flow of candles, the flame extinguished, the more obvious smell of paraffin combustion, non-toxic PE.pp than the proportion of water, floating in water. Other most of the proportion of plastic greater than Water, sink in the water.
PC === bullet-proof plastic, polycarbonate
Colorless and transparent, impact strength is the first plastic, excellent electrical properties, anti-aging, shrinkage rate is small, the size of the product is stable, PC burning phenomenon close to PS but slow burning speed, will be slowly quenched from the fire, yellow flame, Charcoal, burning melt blister, hair is made after the flicker off.
4 PMMA === plexiglass (acrylic), polymethyl methacrylate
Good transparency, can be dyed into various colors, crisp and easy to crack, poor surface hardness, easy to scratch, good resistance to leakage. PMMA and PS primary colors are transparent, but the combustion is different, PMMA no carbon fly, PS, PMMA combustion flame was light blue, white at the top, melt blister burning, issued a strong odor and decay rotten fruit smell of vegetables, there Hui-min.
5. PS === hard plastic (ordinary hard plastic), polystyrene, transparent and easy to crack
HIPS === Non-shredded rubber, modified polystyrene, elastic. Toughness and high impact strength
ABS === ABS plastic, super broken rubber, acrylic clear - butadiene - styrene, easy plating. High strength. Impact resistance, cold, grinding, corrosion.
SAN (AS) === Transparent non-shredded, styrene-acrylonitrile copolymer
EPS === Styrofoam, Styrofoam
PS primary color is transparent, HIPS primary colors are milky white, ABS primary colors are shallow ivory.
PS.HIPS.ABS The main difference is: PS is more brittle, HIPS and ABS toughness better. Bending specimens, PS is very easy to brittle, HIPS and ABS is difficult to break, bend the site whitish. PS primary colors For the transparent color, HIPS primary colors are milky white, ABS is light tooth color.PS.HIPS. And ABS are flammable, can still be taken after the ignition of fire, the flame is yellow, Gas Yi, PS charcoal slightly less, burning, near the flame at the plastic surface softening and not easy to drip, PS and HIPS surface will be blistering, ABS non-blistering was coking state, these kinds of plastic issued in the extinguished Smell is very different, PS monomer with styrene smell, ABS emits a pungent odor, there is some toxicity.Cosmetic Hoses
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