HD-IS-8710 is four-component PU foam systems specially designed for self-integral skin products. B-component is modified polyisocyanate(MDI), while A-component is made up of polyether polyalcohol,blowing agent,catalyst and stabiliser,etc. C is blowing agent; D is colour paste. All of these are separate packaging. The systems has three kinds of brands.
* HD-IS-8710H is applied to products with higher hardness requirement, such as the steering wheel of trucks and vehicles' bumpers.
* HD-IS-8710S is applied to products with medium hardness, such as the armrests of chairs and steering wheels of cars.
* HD-IS-8710L is applied to PU products with low density and hardness, such as cushions, backrests, supports and toys of physical, gymnastic and medical equipemnt.
Physical Properties:
A Component | B Component | ||
Item | Index | Item | Index |
Hydroxy Content (MgKOH/g) | 145-172 | -NCO Content (%) | 26±2 |
Viscosity (25℃)(MPa.s) | 800±200 | Viscosity (25℃)(MPa.s) | 200±50 |
Specific Gravity (25℃)(g/cm3) | 1.05±1.3 | Specific Gravity (25℃)(g/cm3) | 1.22±0.05 |
Proportion of Weight:HD-IS-8710H (A+C+D): B = [100+(12-15)+3] : 50
HD-IS-8710S (A+C+D): B = [100+(12-15)+3] : 46
HD-IS-8710L (A+C+D): B = [100+(12-15)+3] : 47
Reaction Time:(Data of Laboratory Test, Working Temperature at 25℃)
HD-IS-8710H | HD-IS-8710S | HD-IS-8710L | |
CT(sec) | 24-26 | 24-26 | 30-35 |
GT(sec) | 40-45 | 40-45 | 60-65 |
RT(sec) | 55-60 | 55-60 | 75-80 |
DMT(sec) | 240-360 | 200-300 | 300-400 |
Foam Performance:
Item | HD-IS-8710H | HD-IS-8710S | HD-IS-8710L | Testing Method |
Free Density (kg/m3) | 120-140 | 120-140 | 100-115 | DIN53420 |
Moulding Density (kg/m3) | 500-600 | 300-500 | 200-300 | DIN53420 |
Skin Density (kg/m3) | 900-1000 | 800-900 | 600-800 | DIN53479 |
Skin Thickness(mm) | 1.0-1.5 | 1.5-2.0 | 1.5-2.0 | --- |
Skin Average Hardness (shoreA) | 65-75 | 55-65 | 40-55 | DIN53505 |
Tensile Strength (MN/m2) | 3.5-6.0 | 1.8-2.3 | 1.4-1.9 | DIN53571 |
Elongation at Break (%) | 70-80 | 70-90 | 55-70 | DIN53504 |
Tearing Strength (KN/m) | 3-5 | 1.2-1.5 | 0.7-0.9 | DIN53504 |
Packaging:Galvanized Zinc Metal Barrel。A Component:200kg/barrel;B Component:230kg/barrel;C Component:20kg/barrel
Shelf life:A Component /6 months;B Component /3months;C Component/6 months