Semi-Rigid Foam Formulated System Blend Polyether Polyol for Automotive Parts
Product introduction
LY-973A is combined polyether used in the manufacture of automotive steering wheels, which can be used with liquefied MDI (such as LY-973B, etc.).
Product application
It is suitable for the manufacture of automobile steering wheels with the density of 350~420 kg/m3, and the hardness of 60±10A.
Physical and chemical properties
|
Unit |
LY-973A Polyol |
LY-973B Isocyanate |
Appearance |
|
white liquid |
yellow liquid |
NCO content |
% |
--- |
28-30 |
Viscosity(25ºC) |
mPa·s |
1000~1400 |
30~60 |
Storage temperature |
ºC |
10~40 |
15~35 |
Storage period |
months |
6 |
6 |
Process conditions
Manual experimental conditions: rotating speed of 4000rpm, free foaming in a 500ml cup
|
Unit |
Manual foaming |
Ratio of LY-973A/Water/LY-973B |
|
/ |
materials temperature |
ºC |
25/25 |
Cream time |
s |
10~15 |
Gel time |
s |
/ |
Stop rising time |
s |
/ |
Density of free foam |
kg/m3 |
/ |
Product properties
Physical properties |
Test standard |
Unit |
LY-973A/water/LY-973B |
Ratio of LY-973A/LY-973B |
|
|
100/55~65 |
Molding density |
ISO 845 |
kg/m3 |
/ |
Surface hardness |
ASTM D2240 |
Shore A |
/ |
Tensile strength |
ASTM D3574 |
KPa |
/ |
Elongation at break |
ASTM D3574 |
% |
/ |
Package
200 liter iron drums, 200kg/drum
Storage
Hygroscopic. Use dry nitrogen or low dew point air for tank padding. Keep drums tightly closed to
prevent contamination. Store at 15~25 . Observe ºC all federal, state and local regulations when
storing this substance. Store away from incompatible substances.