Professional China Low Hardness Polyurethane System - Donpanel 423 CP/IP base blend polyols for continuous PIR – INOV

Donpanel 423 CP/IP base blend polyols for continuous PIR

INTRODUCTION

DonPanel 423 system is a four components system which consists of blend polyols, polymeric MDI, catalyst and blowing agent (pentane series). The foam has good thermal insulation property, light in weight, high compression strength and flame retardant and other advantages. It is widely used to produce continuous sandwich panels, corrugated panels etc, which applies to make cold stores, cabinets, portable shelters and so on.

PHYSICAL PROPERTY

K1-blend polyols DonPanel 423

Appearance               

Light yellow to brown transparent liquid

OHvalue                 mgKOH/g

260-300

Dynamic viscosity(25℃)   mPa.S

1800-2200

Density    (20℃)         g/ml

1.10-1.16

Storage temperature           ℃

10-25

Storage stability             month

6

K2-Polymeric MDI DD-44V80

Appearance               

brown transparent liquid

NCO content                  %

30.50

Dynamic viscosity  (25℃)   mPa.S

600-700

Density     (20℃)         g/ml

1.24

Storage temperature            ℃

10-25

Storage stability               month

12

K3-Cat 2816

Appearance               

Light yellow transparent liquid

Dynamic viscosity  (25℃)   mPa.S

1200-1600

Density     (20℃)         g/ml

0.96

Storage temperature            ℃

10-25

Storage stability               month

6

RECOMMENDED RATIO

Raw materials

pbw

DonPanel 423

100 g

Cat2816

1-3 g

Pentane (Cyclopentane/Isopentane)

7-10 g

Polymeric MDI DD-44V80

135-155 g

TECHNOLOGY AND REACTIVITY (the exact value varies depending on processing conditions)

Items

Manual mixing

High pressure machine

Raw material temperature   ℃

20-25

20-25

Mould temperature        ℃

45-55

45-55

Cream time              s

10-15

6-10

Gel time                 s

40-60

40-60

Free density            kg/m3

34.0-36.0

33.0-35.0

MACHINERY FOAM PERFORMANCES

Mold density ISO 845

≥38kg/m3

Closed-cell rate ASTM D 2856

≥90%

Thermal conductivity     (15℃) EN 12667

≤24mW/(m.K)

Compression strength EN 826

≥120kPa

Adhesive strength GB/T 16777

≥100kPa

Dimensional stability   24h  -30℃ ISO 2796

 ≤0.5%

24h  -100℃

≤1.0%

Flame retardant grade DIN 4102

Level B2 (no burning)

Water absorption ratio GB 8810

≤3%

The data provided above are typical value, which are tested by our company. For our company's products, the data included in the law do not have any constraints.