Soft polyester for shoe sole

Good handle, smooth surface, low density and low hardness, good dimension stability, especially used for Mid-sole.

Typical properties of PU matrix

Name of product	Apperance	Viscosity(mPa·/40°C)	Density(g·cm/40°C)	Package(kg)
A-2025	liquid	800-1200	1.01-1.02	18
B-8020	Yellowish Transparent Liquid or Waxy	700-900	1.08-1.2	20

Material preheat

A-2025     Preheated at 50-60°C for 8-10 hours

B-8020     Preheated at 60-70°C for 8-12 hours

Typical processing parameters & Reaction parameter

Items	A/B Materials Temperature(°C)	A+C/B Mix ratio (by weight)	Cream Time(s)	End of rise time(s)	Free rise foam density(g/cm³)	Mold temperature(°C)	Demold time(min)
Parameter	40-45/38-42	100/72-74	7-11	45-55	0.14-0.21	45-55	4-5

The adding content of C-2 should be 240g±20/18kg

The adding content of water should be 0-120g/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)
Physical properties	0.28-0.40	20-35	1.4-3.2	300-400	9-15

Demold time may be prolonged with the increase of sole thickness.

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

Data listed above are just for reference, The detail date are subjected to practical production, If other request for Physical properties, please contact us.

Soft polyester for shoe sole