Conventional flexible polyurethane foam,refers to polyurethane foam with a certain degree of flexibility,which is with the largest amount in all polyurethane downstream products.The foam structure of polyurethane foam is mostly open cell.The general characteristics are low density,good elasticity,sound absorption,air permeability,thermal insulation performance,mainly used for furniture,vehicle seat cushion pad material,soft liner laminated composite material.Industrial and civil use of soft foam are as filtering material,sound insulation material,shockproof material,decorative material,packaging material and thermal insulation material, etc.
Polyether Polyol：
The polyether polyol for conventional flexible foam is main MW3000 or 3500 and with glycerin as starter,also there are new generation of polyol being made from vegetable material to replace propylene oxide.
|
Brand |
OH-Value (mgKOH/G) |
Acidity (mgKOH/g) |
Water % |
PH |
Color APHA |
Appearance |
Viscosity mpas/25℃ |
Ka/Na ppm |
|
MW 3000 |
54-58 |
≤0.1 |
≤0.1 |
5.5-7.0 |
≤100 APHA |
Colorless Transparent Liquid |
550-750 |
≤6 |
|
MW 3500 |
46-50 |
≤0.1 |
≤0.1 |
5.0-7.0 |
≤100 APHA |
550-850 |
≤6 |
Polymer Polyol：
To increase the hardness of flexible foam,polymeric polyol will be needed,it’s a copolymer of SM and AN based on MW 3000 flexible base polyol.
|
Brand |
OH-Value (mgKOH/G) |
Water % |
PH |
Appearance |
Viscosity mpas/25℃ |
Solid Content % |
|
POP-2045 |
28-32 |
≤0.1 |
7.0-9.0 |
White Emulsion |
≤5000 |
45% |
|
POP-2043 |
28-32 |
≤0.1 |
7.0-9.0 |
≤6500 |
43% |
|
|
POP-2025 |
36-40 |
≤0.1 |
7.0-9.0 |
≤3000 |
25% |
|
|
POP-2015 |
38-44 |
≤0.1 |
7.0-9.0 |
≤1500 |
15% |
|
|
POP-2010 |
42-46 |
≤0.1 |
7.0-9.0 |
|
≤1000 |
10% |