Songhan Plastic Technology Co.,Ltd.

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

Category Polymer , Thermoplastic , Elastomer, TPE , Polyurethane, TP , Silicone Polyurethane, Polycarbonate Based , Silicone, Thermoplastic
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
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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
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
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
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
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

@Frequency 60 Hz
Dielectric Strength 19.3 kV/mm
490 kV/in
Processing Properties Metric English Comments
Processing Temperature 185 - 200 °C
365 - 392 °F
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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