Materials Selection Deskbook 2011 Part 13 ppt

168 Materials Selection Deskbook Q3 Q C 8 8 i;i U Appendix B: General Properties and Data on Elastomers and Plastics 169 8 e! c. f 0 a Y !? m 1 A d 2 i I E z z? Ep CA 170 Materials Selection Deskbook ul .C( k 3 3 a 3 W 2 Appendix B: General Properties and Data on Elastomers and Plastics 171 ri c? 172 Materials Selection Deskbook Appendix B: General Properties and Data on Elastomers and Plastics 173 174 Materials Selection Deskbook Appendix B: General Properties and Data on Elastomers and Plastics 175 Table B.10 True Stress at Break of Selected Melt-Mixed Rubber-Plastic Blendsa Rubber Plastic True stress at break (MPa) IIR Polypropylene 26 EPDM Polypropylene 26 NR Polypropylene 16 NBR Polypropylene 23 EPDM Polyethylene 27 NBR Polyethylene 13 NBR Poly(tetramethy1ene terephthalate) 27 IIR Polystyrene 2.3 BR Polystyrene 4.1 IIR SAN 5.0 NBR SAN 10.5 IIR PMMA 3.6 aThe compositions were 6040 and 5050 rubber-plastic weight ratio. The stress at the break is the product of the ultimate extension ratio. EPDM Polystyrene 3.7 Table B.ll Properties of Various Types of Elastomer Compositions Partially Completely vulcanized vulcanized Ester-ether EPDMPoly- EPDMPoly- copolymer propylene propylene Neoprene thermoplastic blend" blendb vulcanizate elastome? ~~ ~~ Shore A hardness Tensile strength (MPa) Ultimate elongation (%) Volume swell in ASTM No. 3 Oil (74 hr at 100°C) (%) Compression set (method B: 22 hr at l00OC) (%) Use temperature ("C) Type of processing" 77 80 80 92 200 400 400 450 Disintegrated 50 35 30 6.6 9.7 9.7 25.5 70 39 35 33 100 125 110 125 TP TP cv TP aTPR-1700 (Uniroyal). bSantoprene (Monsanto). 'Hytrel (DuPont). dTP, thermoplastic; CV, conventional vulcanizate. 176 Materials Selection Deskbook Appendix B: General Properties and Data on Elastomers and Plastics 177 X 0 I 8 u I x I. 5 1 x I 5 I T W u u E 0 3: [...]...178 Materials Selection Deskbook 5 6 C s 'C m C 5 c; Y Y U E P k E 2 d a Appendix B: General Properties and Data on Elastomers and Plastics I laeg" 5 179 180 Materials Selection Deskbook Y z" M 53 n T; Appendix B: General Properties and Data on Elastomers and Plastics 181 v) 0 OD 4 d a a0 C " v) 150 L 150 p! V " c- 2 w z a 0 3 h 8 Q 2 (0 m m 4 0 8 2 L 8 D 2 9 0 'E: 2 i ; W 5 '00 E L W 9 D 2 182 Materials. .. General Properties and Data on Elastomers and Plastics 181 v) 0 OD 4 d a a0 C " v) 150 L 150 p! V " c- 2 w z a 0 3 h 8 Q 2 (0 m m 4 0 8 2 L 8 D 2 9 0 'E: 2 i ; W 5 '00 E L W 9 D 2 182 Materials Selection Deskbook I- 2 o D D m w, E m a e d 0 m u - 9 . CA 170 Materials Selection Deskbook ul .C( k 3 3 a 3 W 2 Appendix B: General Properties and Data on Elastomers and Plastics 171 ri c? 172 Materials Selection Deskbook Appendix. Materials Selection Deskbook Appendix B: General Properties and Data on Elastomers and Plastics 177 X 0 I 8 u I x I. 5 1 x I 5 I T W u u E 0 3: 178 Materials Selection. Deskbook Appendix B: General Properties and Data on Elastomers and Plastics 173 174 Materials Selection Deskbook Appendix B: General Properties and Data on Elastomers and Plastics 175 Table