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Melting Points Of Plastics By:- Sunny Raj 1. Polyolefins Polymer Abbreviation Melting Points ( ° C)     Low density polyethylene LDPE 110 High density polyethylene HDPE 130 Linear low density polyethylene LLDPE 125 High molecular high density polyethylene HMHDPE 135 Ultra high molecular HDPE UHMHDPE 130 Polypropylene PP 160 2. Chlorinated Polymers Polymer Abbreviation Melting Points  ( ° C) Poly vinyl chloride PVC  160-220 Poly vinyledene chloride PVDC 190-200 Chlorinated PVC PVCC 200-210 Co-polymer of vinyl chloride & vinyl acetate PVC-co-VA 130 Poly vinyl alcohol PVA 218 Poly vinyl acetate PVAc 175  3. Fluoro Polymer Polymer Abbreviation Melting Points  ( ° C) Polyvinyl fluoride PVF 200 Poly vinyledene fluoride PVDF 172 Ploy chloro tri fluoro ethylene PCTFE 210 Poly tetra fluoro ethylene PTFE 320  4. Polystyrene & co-polymer Polymer Abbreviation Melting Points  ( ° C) Acrylonitrile butadiene styrene ABS 200-210 Styrene acrylo nitrile SAN 200 Polystyrene PS 190  5. Polyamides

(01) IMMERSION TEST (ASTM D 543, ISO 175) The method of measuring the resistance of plastics to chemical reagents by simple  immersion of processed plastic specimens is a standard procedure used throughout  the plastics industry. The method can only be used to compare the relative resis￾tance of various plastics to typical chemical reagents. The test results do not provide  a direct indication of suitability of a particular plastic for end-use application in  certain chemical environments. The limitation infl uencing the results, such as dura￾tion of immersion, temperature of the test, and concentration of reagents should  be considered when studying the test data. For applications involving continuous  immersion, the data obtained in short-time tests are useful only in screening out  the most unsuitable materials. The test equipment consists of a precision chemical balance, micrometers,  immersion containers, an oven or a constant-temperature bath, and a testing device  for measuring

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Plastic Material Melt And Mould Temperatures MATERIAL MELT TEMPERATURE RANGE (℃) MOULD TEMPERATURE RANGE (℃) ABS 190-270 40-80 ABS/PC ALLOY 245-265 40-80 ACETAL 180-210 50-120 ACRYLIC 220-250 50-80 CAB 170-240 40-50 HDPE 210-270 20-60 LDPE 180-240 20-60 NYLON 6 230-290 40-90 NYLON 6 (30% GF) 250-290 50-90 NYLON 6/6 270-300 40-90 NYLON 6/6 (33% GF) 280-300 40-90 NYLON 11 220-250 40-110 NYLON 12 190-200 40-110 PEEK 350-390 120-160 POLYCARBONATE 280-320 85-120 POLYESTER PBT 240-275 60-90 PET (SEMI CRYSTALLINE) 260-280 20-30 PET (AMORPHOUS) 260-280 20-30 POLYPROPYLENE (COPOLYMER) 200-280 30-80 POLYPROPYLENE (HOMOPOLYMER) 200-280 30-80 POLYPROPYLENE (30% TALC FILLED) 240-290 30-50 POLYPROPYLENE (30% GF) 250-290 40-80 POLYSTYRENE 170-280 30-60 POLYSTYRENE (30% GF) 250-290 40-80 PVC P 170-190 20-40 PVC U 160-210 20-60 SAN 200-260 50-85 SAN (30% GF) 250-270 50-70 TPE 260-320 40-70

Basics of Pneumatic Conveying System & Applications in Plastic Processing...............S.S Contact :-  Sunny Raj (8873873036) sunnystudy2020@gmail.com

Polystyrene Polystyrene is a versatile plastic used to make a wide variety of consumer products. As a hard, solid plastic, it is often used in products that require clarity, such as food packaging and laboratory ware. When combined with various colorants, additives or other plastics, polystyrene is used to make appliances, electronics, automobile parts, toys, gardening pots and equipment and more. Polystyrene also is made into a foam material, called expanded polystyrene (EPS) or extruded polystyrene (XPS), which is valued for its insulating and cushioning properties. Foam polystyrene can be more than 95 percent air and is widely used to make home and appliance insulation, lightweight protective packaging, surfboards, foodservice and food packaging, automobile parts, roadway and roadbank stabilization systems and more. Polystyrene is made by stringing together, or polymerizing, styrene, a building-block chemical used in the manufacture of many products. Styrene also occurs naturally in