PU System for Safety Shoe

• Customization: Available
• CAS No.: 9009-54-5
• Formula: C3h8n2o
• Model NO.: HD-6670 / HD-1919
• Molecular Principal Chain: Carbon Chain Polymer
• Color: White
• Transport Package: Various Packages
• Specification: 18kg/220kg
• Trademark: HuiDe
• Origin: China
• HS Code: 39095000
• Production Capacity: 260000 Tons

Product Description

HD-6670 / HD-1919
Characteristics: Mid-highhardness, excellent mechanical, cohesive and anti-static properties.
Application: For dual density safety shoe sole production.

Typical properties of PU resin:

Name of products	@40ºC Appearance	Density(g/cm^3@40^oC)	Viscosity(mPa·s @40^oC)	Package Size(kg/drum)
HD-6670(POL, A)	Liquid	1.13~1.18	1000~1500	18 / 220
HD-1919(ISO, B)	Liquid	1.18~1.20	350~450	20 / 235

Processing:
Please preheat materials at 60~70ºCfor 6~10 hours before processing. Then mix fully the whole drum of POL and other additives according to the following table. Finally, respectively transfer POL and ISO to their corresponding tanks.

Type	HD-6670	Hardener/g	water/g	catalyst/g	other
outsole	18 kg(one drum)	0	0~10	220~240	It depends
	220 kg (one drum)	0	0~120	2700~2900	It depends
midsole	18 kg(one drum)	200	30-40	300~320	It depends
	220 kg (one drum)	200	370-490	3700~3900	It depends

Reactivity and product performance:

Test Items	Reactivity parameters		Test Items	Product performance
	outsole	midsole		outsole	midsole
Ratio of (A+C) and B material	100:70~73	100:82~85	Moulding density(g/cm^3)	0.80~1.10	0.45~0.55
Material temperature (^oC)	A:40~45 / B:40~45	A:40~45 / B:40~45	Hardness(23ºC,Shore A)	55~65	45~55
Cream time (s)	6~9	5~7	Tensile strength(MPa)	≥8.5	≥4.0
End of rise time (s)	35~45	25~35	Elongation(%)	≥500	≥350
Free rise density (g/cm^3)	0.40~0.70	0.26~0.33	Tear strength(kN/m)	≥30.0	≥20.0
Metal mold temperature (^oC)	45~55	45~55	Flexing resistance 23ºC×2mm×50000times	Crack increase≤4.0mm
Demould time(min)	3~4	3~5	DIN abrasion resistance(mm3)	≤150	/
			Peel strength(KN/m)	≥3.5

The ratio based on the best value varies with the type and quantity of added paint additives.
The free rise foam density varies with the seasonal variation (temperature, humidity).
Data listed above are just for reference. The detailed data are subjected to practical operation. Please contact us if other physical properties are essential.