Advantages:

Pressure relief
Slowly recovery

 

Memory foam mattresses have increased in popularity over the last few years, and many sleepers with hip, back, or shoulder pain find that memory foam offers unparalleled pressure relief.

Memory foam is a type of polyurethane foam. As with all foams, memory foam compresses under pressure. The difference with other polyurethane foams is that memory foam also contains added chemicals that increase its viscosity and elasticity, hence its alternate name, viscoelastic foam.

When pressure is applied, memory foam has the ability to be stretched into different shapes, and then slowly return to its original form when the pressure is lifted. Thanks to these attributes, memory foam excels at absorbing energy to provide pressure relief.

 

Typical properties of PU matrix

Name of products	Appearance	Visscosity (mPa.s/25 °C)	Density ( g.cm-3/25 °C)	Package ( kg )
A – 9618	Liquid	700~1100	1.01~1.04	200
B – 9618	Yellowish Transparent Liquid	300~600	1.06~1.1	230

 

Typical processing parameters & Reaction parameter

Items	A/B Materials Temperatures °C	A/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 )
Physical Properties	25~30 / 25~30	100/80~100	18-26	60~80	0.06~0.08	30~40	25~35

 

Physical properties

Items	Mold Density ( g/cm³)	Hardness ( Asker F )	Tensile Strength (kg/cm2)	Elongation(%)	Rebound (%)
Physical properties	0.07~0.09	60~90	2~3	80~120	N/A