راتنج البولي يوريثين لأحذية الأمان

Typical processing parameters & Reaction parameter

Items

A/B Materials Temperatures
(℃)

A+C/B Mix ratio
(By weight)

Cream Time
 (s)

End of Rise Time (s)

Parameter

40~45/40~45

sole

mid-sole

sole

mid-sole

40~50

100/69~71

100/77~79

6~8

6~7

Items

Free Rise Foam Density
(g/cm3)

Mold Temperature
(℃)

Demold Time
(min))

/

Parameter

Sole

mid-sole

45~55

3~5

0.47~0.50

0.23~0.26

The adding content of C-2 should be 300g±20g/18kg

The adding content of water and hardener should be changed according to the reality

sole:    H₂O 20~30g/18kg     Hardener 0~400g/18kg               

mid-sole: H₂O 50~55g/18kg     Hardener 0~600g/18kg    

Physical properties

Items

Molded Density (g/cm³)

Hardness
(Shore A )

Tensile strength(MPa)

Elongation (%)

Physical  properties

sole

mid-sole

sole

mid-sole

sole

mid-sole

sole

mid-sole

0.9~1.1

0.45~0.55

62~72

45~55

8.0~11.0

3.9~7.9

550~750

520~690

Items

Tear Strength
(kN/m)

 (room temperature)

Williams abrasion
(cc/php)

Adhesion between sole and mid-sole
(kg/cm)

Flexing resistance

 (Break length,0mm)

Physical  properties

sole

mid-sole

100,000 times no crack

sole

mid-sole

40~60

25~40

16~27

60~100

-

Demold time may be prolonged with the increase of sole thickness

These physical data are acquired by testing a sample of 6mm thick.

Data listed above are just for reference. The detail data are subjected to practical production. If other requests for physical properties, please contact us.