Poletra de poliuretano PRECHE PU PU para plantilla de zapatos

Characteristic: Good handle, low density and good dimension stability, high elasticity

Application: Insole and low density mid-sole

Typical properties of PU matrix

Name of products

Appearance

Viscosity (mPa·s/40℃)

Density 

(g·cm^-3/40℃)

Package(kg)

/

A-2001

Liquid

1000~1400

1.01~1.02

18

B-8580

Yellowish transparent liquid or waxy

600~1000

1.08~1.2

20

Materials preheat

A-2001:  preheated at 50~60℃ for 8~10 hours.  

B-8580:  preheated at 50~60℃ for 8~12 hours.

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)

Free Rise Foam Density(g/cm³)

Mold Temperature
(℃)

Demold Time(min)

Parameter

40~45/38~42

100/74~76

7~9

50~60

0.13~0.16

45~55

4~5

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

The adding content of water should be 0~90g/18kg according to the reality.

Physical properties

Items

Molded Density (g/cm³)

Hardness
(Shore C )

Tensile strength(MPa)

Elongation (%)

Tear Strength
(kN/m)

/

Physical  properties

0.30~0.40

35~45

4.0~6.0

300~380

18~26

Demold time may be prolonged with the increase of sole thickness

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