Polyurethane Rubbers

Composition：It consists of A&B component, A is polyol, and B is Hydroxyl-Terminated polyurethane prepolymer.
Characteristics：It has excellent processing properties, solid in common temperature, shorter gel time, and regulating colours by adding pigment. The ware has good properties of abrasive resistance, hydrolysis resistance, transparent, good resilience, stable dimension.
Application：Substitute for Silicon rubber to make the mould of “cultural stone”. It also applies to electrical equipment potting, rubber rollers, rubber plates, rubber wheels, shoe models and others.
Storage：Store in cool and dry place. If you can’t use one drum up at a time, please inject N2.The storage time of original packing is 3 mouths.

B

Type

Appearance

Colorless or light yellow transparent liquid

Viscosity（30℃）mPa·s/

1500±150

1500±150

A

Type

Appearance

Light yellow liquid

Viscosity（30℃）/mPa·s

560±200

650±100

750±100

850±100

500±200

Ratio A：B（mass ratio）

1.4:1

1.2:1

1:1

0.7:1

1：1

Operation temperature/℃

25～40

Gel time（30℃）*/min

6～15（variable）

Appearance

Light yellow cpu

Hardness （shore A）

60±2

70±2

80±2

90±2

50A

Tensile strength/MPa

6

8

10

12

3.5

Elongation at break/ %

500～700

Tear strength/（kN/m）

25

30

40

40

20

Rebound/ %

60

55

50

48

50

Specific gravity（25℃ g/ cm3）

1.07

1.08

1.10

1.11

 

Type

Type

Appearance

Viscosity（25℃）mPa·s/

yellow transparent liquid

1000±100

200±50

Ratio A：B（mass ratio）

A/B=100/75

Gel time（30℃）*/min

3～15

manufactures

Hardness （shore D ）

75±3

Tensile strength/MPa

50±5

Elongation at break/ %

15±5

Rebound/ %

≤0.4