البولي يوريثان لصنع النعال والصندل

Characteristic: Good handle, low density and good dimension stability

Application: Outsole and mid-sole

Typical properties of PU matrix

Name of products

Appearance

Viscosity (mPa·s/40℃)

Density (g·cm^-3/40℃)

Package(kg)

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A-2260

Cream white liquid

800~1200

1.01~1.02

18

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B-8580

Yellowish 

transparent 

liquid or waxy 

600~800

1.08~1.2

20

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Materials preheat

A-2260:  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

100/96~98

6~8

40~50

0.15~0.25

45~55

2.5~3.5

The adding content of C-2 should be 270g±20g/18kg

The adding content of water should be 0~100g/18kg according to the reality

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

Physical properties

Items

Molded Density (g/cm³)

Hardness

(Shore A )

Tensile strength

(MPa)

Elongation

(%)

Tear Strength

(kN/m)

Ross Flexing

(room temperature)

( 40,000 times)

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Physical  properties

0.30~0.45

43~58

1.5~4.5

250~400

10~26

No crack

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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.