Donpanel 422 HCFC-141b base blend polyols for continuous PUR

Short Description:

DonPanel 422/ PUR blend polyols is a compound which consists of polyether polyols, surfactants, catalysts, HCFC-141B and flame retardant in a special ratio. 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.


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Donpanel 422 HCFC-141b base blend polyols for continuous PUR

INTRODUCTION

DonPanel 422/ PUR blend polyols is a compound which consists of polyether polyols, surfactants, catalysts, HCFC-141B and flame retardant in a special ratio. 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

Appearance

Light yellow transparent viscous liquid

Hydroxyl value mgKOH/g

300-340

Dynamic viscosity (25℃) mPa.S

300-400

Density (20℃) g/ml

1.12-1.16

Storage temperature ℃

10-25

Storage stability month

6

RECOMMENDED RATIO

Raw materials

PBW

DonPanel 422 blend polyols

100

Isocyanate

120-130

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

Items

Manual mixing

High temperature machine

Raw material temperature ℃

20-25

20-25

Mould temperature ℃

35-45

35-45

Cream time s

8-16

6-10

Gel time s

30-60

30-40

Free density kg/m3

28.0-35.0

33.0-35.0

FOAM PERFORMANCES

Mold density

GB 6343

≥40kg/m3

Closed-cell rate

GB 10799

≥90%

Thermal conductivity(15℃)

GB 3399

≤22mW/(m.K)

Compression strength

GB/T 8813

≥140kPa

Adhesive strength

GB/T 16777

≥120kPa

Dimensional stability        24h -20℃ 

                                  24h 100℃

GB/T 8811

≤1%

≤1.5%

Flame retardant grade

GB/T8624

B2

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.


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