PurSil™ Thermoplastic Silicone Polyether Urethane

property

procedure

 

PurSil™ Thermoplastic

Silicone Content (%)

ASTM

10

20

35

Color

 

Translucent, colorless to slightly yellow

Hardness, Durometer

D2240

81A

80A

83A

Specific Gravity

D792

1.11

1.11

1.11

Density, g/cm3

D792

1.11

1.11

1.11

Ultimate Tensile Strength (psi)

D1708

5692

4669

3664

Ultimate Elongation (%)

D1708

571

565

492

Tensile Stress at

psi at 50% elongation

psi at 100% elongation

psi at 300% elongation

D1708

 

NA

NA

NA

 

686

897

1846

 

677

916

1896

Tear Strength, Die 'C', pli

D624

350

390

330

Compression Set, %,

22 hrs @ 25°C

D395

23

28

29

Taber Abrasion, 1000g wt.
Wear Index, mg/1000 cycles

D1044
H-18 wheel

25

26

85

Vicat Softening Temp.

°C

°F

D1525

 

82

180

 

73

163

 

67

152

Coefficient of Linear

Thermal Expansion

x 10-6/°C

x 10-6/°F

 

E831

E1545

 

 

 

187.3

104.2

 

 

189

105

 

 

193.5

107.5

Approximate Melt Index
g/10 min at 224°C, 1200g

D1238

NA

30

32

Tg, °C

DSC

-68

-74

-86

Flexural Modulus, psi

1% Secant Modulus

D790

5380

5550

6280

Flexural Stress, psi

at 5% Deflection

D790

210

220

270

Dielectric Strength, (V/mil)

D149

340

350

420

Dielectric Constant, k', 60 hz

D150

7

6.7

5.8

Mold Shrinkage, %

 

 

 

 

 

4.0" Disk

D955

1.2

1.1

1.1

  Flame Bar

 

1.0-2.1

0.8-2.3

0.8-1.9

Optimum Extrusion Conditions

°F

°C

 

 

360-400

182-204

 

360-400

182-204

 

360-400

182-204

Note: Typical physical property values are not to be construed as sales specifications.




Representative Biological Test Results

biological test

results

Cytotoxicity (1X MEM Elution)

Non-cytotoxic

ISO Maximization Sensitization Study

No evidence of causing delayed dermal contact sensitization

ISO Intracutaneous

No evidence of significant irritation from the extracts injected intracutaneously

USP and ISO Systemic Toxicity

No mortality or evidence of significant systemic toxicity from the extract

Genotoxicity: in vitro Chromosomal Aberration

Non-genotoxic

Genotoxicity: Bacterial Reverse Mutation

Nonmutagenic

In Vitro Hemolysis Study

Non-hemolytic

Plasma Recalcification Time Coagulation

No significant effect on recalcification time

ISO Rabbit Pyrogen

Non-pyrogenic

Subchronic Intraveneous Toxicity

No significant evidence of systemic toxicity

Mouse Bone Marrow Micronucleus

No evidence of cellular toxicity

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