塑料原料密度（Plastic material density）.doc

塑料原料密度（Plastic material density） What is the density of the plastic material? Unit: g/cm3 Polystyrene (PS) (general) 1.044930 Polystyrene (HIPS) (impact resistance grade) 1.055430 Styrene propylene copolymer (A.S) 1.076632 Styrene propylene - butyl = olefin copolymer (A.B.S) 1.057234 (1.03~1.07); 14000/ tons Styrene butyl copolymer (Kresine) 1.019436 Acrylic (acrylic) resin (PMMA) 1.199337 Cellulose acetate (CA) 1.2916539 Nylon 66 polyamide resin Polyamide1.1417540 Nylon 6 polyamide resin Polyamide1.1412040 Thermoplastic polyester) (PBT) 1.3024042 Polyester resin (PETG) 1.2715044 Polyphenylene oxide (PPO) 1.1023046 Polycarbonate (PC) 1.2018048 Polybutylene (P 0.9016050) Ionic polymer (IO) 0Low density polyethylene (LDPE) 0.924853; commercial PE-LD material has a density of 0.91~0.94 g/cm3. PE-LD has permeability to gases and water vapor. PE-LD has a high coefficient of thermal expansion and is not suitable for processing long - term products. If the density of PE-LD is between 0.91~0.925 and g/cm3, then the contraction rate is between 2%~5%; if the density is between 0.926~0.94 and g/cm3, then the contraction rate is between 1.5%~4%. The actual shrinkage rate also depends on the injection process parameters. High density polyethylene (HDPE) 0.965055; (density of 0.91~ 0.925g/cm3, we call the first type PE-HD; for the density of 0.926~ 0.94g/cm3, called the second types of PE-HD; for the density of 0.94~ 0.965g/cm3, called third type PE-HD) Polypropylene (homopolymer) (PP) 0.905057 Polyvinyl chloride (soft, IMG, SRC=/ut/images/smiles/smile_sleepy.gif, ALT=sleepy, WIDTH=15, HEIGHT=15, border=0, ALIGN=absmiddle (PVC) 1.205559 Polyvinyl chloride (hard, IMG, SRC=/ut/images/smiles/smile_sleepy.gif, ALT=sleepy, WIDTH=15, HEIGHT=15, border=0, ALIGN=absmiddle (PVC) 1.405559 Polyacetal (plastic steel) 1.4114561 Ethylene vinyl acetate copolymer (EVA) 0.9455463 Poly resin (PU) 1.1440065; PU density: 1.25g/cm3 PE (0.91~0.96g/cm3); PP (0.90~0.91g/cm3); PVC (1.4g/cm3) pl