High reputation Castable Polyurethane Shoe Mould Prepolymer - Donpipe 302 HCFC-141b base blend polyols for pipeline insulation – INOV

Donpipe 302 HCFC-141b base blend polyols for pipeline insulation

INTRODUCTION

This product is a type of blend polyols premixed with HCFC-141B, which is specially researched for rigid PUF to produce thermal insulation pipes. It is widely used in steam pipes, liquefied nature gas running pipes, oil pipes and other fields. The characteristics are as follows:

(1) good flowability, by regulating formula to suit different pipe diameters.

(2) excellent low temperature dimensional stability

PHYSICAL PROPERTY

Appearance               

Light yellow to brown transparent liquid

Hydroxyl value            mgKOH/g

300-450

Dynamic viscosity(25℃)   mPa.S

200-500

Density    (20℃)         g/ml

1.10-1.16

Storage temperature           ℃

10-25

Storage stability             month

6

TECHNOLOGY AND REACTIVITY (Component temperature is 20℃, the actual value is varied according to pipe diameter and processing condition.)

 

Manual mixing

High pressure machine

Ratio(POL/ISO)

1:1.10-1.1.60

1:1.10-1.60

Rise time                   s

20-40

15-35

Gel time                     s

80-200

80-160

Tack free time                s

≥150

≥150

Free density              kg/m3

25-40

24-38

FOAM PERFORMANCES

Mold density GB 6343 55-70kg/m3
Closed-cell rate GB 10799

≥90%

Thermal conductivity     (15℃) GB 3399

≤24mW/(m.K)

Compression strength GB/T8813 ≥200kPa
Water absorption GB 8810

≤3(V/V)%

Dimensional stability 24h  -30℃

GB/T8811

 ≤1.0%

                  24h  100℃

≤1.5%

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.