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Basic Raw Material For Polyurethane


High Resilience Polyurethane Foam


Introduction:           

High resilience flexible foam is also known as "HR" foam.This kind of foam products can be cold curing,block foaming and continuous,with simple process and good properties.Characteristics of the product are:high flexibility and high load ratio,with latex feel.It's mainly used in automotive industry,furniture industry etc.            


Brand

OH-Value

(mgKOH/G)

Acidity

(mgKOH/g)

Water

%

PH

Color APHA

Appearance

Viscosity

mpas/25

Ka/Na

 ppm

MW 5000

32-36

≤0.1

≤0.1

5.0-7.0

≤100

Colorless Transparent Liquid 

750-950

≤6

MW 6000

26-30

≤0.1

≤0.1

5.0-7.0

≤100

900-1100

≤6

We are supplying all kind of Chinese made premium HR polyol,please contact us for detailed information.

         

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 5000 flexible base polyol,mainly two types known by solid content.               


Brand

Solid Content

%

OH-Value

(mgKOH/G)

Moisture

%

PH

Appearance

Viscosity

mpa.s/25

POP-3628

28%

20-28

≤0.1

7.0-9.0

Colorless Transparent Liquid 

≤3500

POP-H45

40%

19-23

≤0.1

7.0-9.0

4500-7000

We are supplying all kind of Chinese made premium HR polymeric polyol,please contact us for detailed information.

 

Isocyanate:           

The isocyanate used in the production of polyurethane high resilience foam is mainly TDI,modified MDI,TDI/MDI mixture,or TDI/MDI/ modified MDI mixture.

 

Blowing Agent:          

There are two main types of blowing agents used in production of polyurethane flexible foam.Water and the low boiling point compounds mainly dichloromethane.

 

Cell Opener:           

It is a kind of special surfactant,normally containing hydrophobic and hydrophilic groups in the Molecular chain.Its role is to reduce the surface tension of the foam;promote cell rupture,improve the opening rate of polyurethane foam as flexible,semi rigid and rigid foam and solve the shrinkage or collapse problem caused by cell closure.

 

Brand

OH-Value

(mgKOH/G)

Acidity

(mgKOH/g)

Water

%

PH

Color APHA

Appearance

Ka/Na

ppm

KY-1593

44-48

≤0.05

≤0.08

7.0-9.0

≤50

Colorless Transparent Liquid 

≤5

We are supplying all kind of Chinese made premium cell opener for HR foam,please contact us for detailed information.

 

Foam Stabilizer:

Used in the production of rigid polyurethane foam as stabilizer,mainly is modified silicone surfactant,the main structure is poly (ethylene oxide) block copolymer.

 

Catalyst

The catalyst for making flexible foam are mainly A1,A33,DMEA,DEOA,TEOA,T-9,T-12,etc.

 

Paste:

The dyeing properties of polyurethane is good,by adding dye or pigment paste,polyurethane foam,especially flexible polyurethane foam products can be made in bright colors.

 

Demoulding Agent:

Polyurethane foam easily sticks to many kind of materials,therefore the demoulding agent should be coated on the surface of the mould to make demoulding easier.