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                      Songhan Plastic Technology Co.,Ltd.
                       POLYMER SEARCH

                      DSM Biomedical CarboSil? 40 90A Biocompatible Silicone Polycarbonate Urethane  (discontinued **)

                      Category Polymer , Thermoplastic , Elastomer, TPE , Polyurethane, TP , Silicone Polyurethane, Polycarbonate Based , Silicone, Thermoplastic
                      Manufacturer
                      Trade Name
                      Port Shanghai port,China
                      Trade Terms FOB, CFR, CIF
                      Payment Terms L/C, T/T, Western Union
                      Download PDF DSM Biomedical CarboSil? 40 90A Biocompatible Silicone Polycarbonate Urethane  (discontinued **).pdf
                      Price EMAIL US    sales@www.akotv.net
                        Online Service   lookpolymers   27660005
                      Material Notes:
                      Combines the biocompatibility and biostability of conventional silicone elastomers with the processability and toughness of thermoplastic urethane elastomers. Noncytotoxic and nonhemolytic. Low-Energy Silicone Surface; Outstanding Oxidative Stability; Hydrophobic; High Tensile Strength; Optically Clear.PurSil? silicone-polyetherurethane and CarboSil? silicone-polycarbonateurethane are true thermoplastic copolymers containing silicone in the soft segment. These high-strength thermoplastic elastomers are prepared through a multi-step bulk synthesis where polydimethylsiloxane (PSX) is incorporated into the polymer soft segment with polytetramethyleneoxide (PTMO) (PurSil) or an aliphatic, hydroxyl-terminated polycarbonate (CarboSil). The hard segment consists of an aromatic diisocyanate, MDI, with a low molecular weight glycol chain extender. The copolymer chains are then terminated with silicone (or other) Surface-Modifying End Groups?. Aliphatic (AL) versions of these materials, with a hard segment synthesized from an aliphatic diisocyanate, are also available.PurSil and CarboSil can be melt fabricated by conventional extrusion, injection molding, or compression molding techniques. Rod, pellet, and tubing extruded from these materials displays an excellent surface finish and low gel content. In addition, these materials are heat-sealable, readily blended with fillers, and easily post-formed.Information provided by the manufacturer, Polymer Technology Group.
                      Physical Properties Metric English Comments
                      Density 1.14 g/cc
                      0.0412 lb/in3
                      ASTM D792
                      Linear Mold Shrinkage 0.012 cm/cm
                      0.012 in/in
                      4.0" disk; ASTM D955
                      Mechanical Properties Metric English Comments
                      Hardness, Shore A 90
                      90
                      Tensile Strength, Ultimate 29.6 MPa
                      4290 psi
                      ASTM D1708
                      Tensile Strength, Yield 7.40 MPa

                      @Strain 50.0 %
                      1070 psi

                      @Strain 50.0 %
                      ASTM D1708
                      Elongation at Break 530 %
                      530 %
                      ASTM D1708
                      Flexural Yield Strength 1.90 MPa
                      276 psi
                      5% deflection; ASTM D-790
                      Flexural Modulus 0.0395 GPa
                      5.73 ksi
                      1% secant; ASTM D-790
                      Tear Strength 82.4 kN/m
                      470 pli
                      Die "C"; ASTM D624
                      Taber Abrasion, mg/1000 Cycles 144
                      144
                      H-18 wheel; ASTM D-1044
                      Compression Set 33 %
                      33 %
                      22 hrs @ 25°C; ASTM D395
                      Thermal Properties Metric English Comments
                      CTE, linear 181.2 μm/m-°C

                      @Temperature 20.0 °C
                      100.7 μin/in-°F

                      @Temperature 68.0 °F
                      ASTM E831
                      Vicat Softening Point 67.0 °C
                      153 °F
                      ASTM D1525
                      Optical Properties Metric English Comments
                      Transmission, Visible 80 %
                      80 %
                      Manufacturer notes 'clear' but doesn't quantify
                      Electrical Properties Metric English Comments
                      Dielectric Constant 4.5

                      @Frequency 60 Hz
                      4.5

                      @Frequency 60 Hz
                      ASTM D150
                      Dielectric Strength 19.3 kV/mm
                      490 kV/in
                      ASTM D149
                      Processing Properties Metric English Comments
                      Processing Temperature 185 - 200 °C
                      365 - 392 °F
                      Extrusion
                      Drying Temperature 82.0 - 104 °C
                      180 - 219 °F
                      Dry Time 4 - 6 hour
                      4 - 6 hour
                      to moisture < 0.01%
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