3.1high Temperature Resistance Rigid PU Polyurethane Formulated System Blend Polyether Polyol for Pre-Insulated Pipe and Shell

Product Description

Blend Polyol DFR3 Series for Pre-insulated Pipe and Shell

1.APPLICATION:

A two-component polyurethane foam insulation system for the manufacture of shells, plates and other products for thermal insulation purposes.The system does not contain ozone-depleting CFCs. Blowing agent provides with CFC free.
Blend Polyol DFR3 Series is a fully blended rigid polyurethane foam system.It has an excellent cure, small hold-in forms, uniform cell structure, low thermal conductivity.Operating temperature up to 120ºC

 

2.Chemical characterization of system components DFR3 Series:

2.1Component A brand Polyol blend:
A mixture of polyethers and special additives.

2.2Isocyanate:
Polymeric diphenylmethane diisocyanate

 

3.Typical property:

	Polyol blend	Isocyanate
Density, g/cm3 (20ºC)	1.08	1.24
Viscosity, mPa s (25ºC)	700	200
Storage stability,month	3	6
Storage temperature, ºC	20~25	20~25

When stored in a tightly closed container in a dry place at the recommended temperature. 

4.Typical Reaction Data

The components Mixing in a laboratory mixer speed to 5000 rpm, 60mm diameter beaker for 10s at temperature 20ºC

 

Product Item		DFR311A	DFR311B	DFR322A	DFR322C
Blowing agent	type	HCFC-141b	HCFC-141b	All water	All water
Free rise density	Kg/m3	40~45	40~45	40~45	40~45
Pipe diameter (applicability)	Φ	≤Φ426, temperature resist 130ºC	Φ426~820, temperature resist 150ºC	≤Φ426	≥Φ820, temperature resist 142ºC

 Because the reaction parameters depend on the intensity of mixing and temperature of components.So listed values should be considered as indicative reference.

5.Application Guidline

made according to the data presented in this technical information on the casting machine, high and low pressure.The temperature of the forming equipment is 30 - 35 C°

 

6.Typical Physical Properties

 

Property	Unit	Value
Density	kg/m3	40-60
		≥ 60
Closed cell content	%	90
Coefficient of thermal conductivity	W / m K	0.025
Compressive strength (10% deformation)	Kpa	250

 

7.APPLICATION GUIDELINES

8.1Facing Preparation

The facings should be clean, dry, and free of grease, oil, solvent or other contaminants, which will interfere with proper adhesion and/or polyurethane insulation quality.This product should be used with facing temperatures in the range 25-45°C.Higher facing  temperatures (40° - 45° C) will enhance foam flow and adhesion.

8.2Equipment Type

This product is suitable for both Low or High Pressure dispensing equipment and hand mix.

8.STORAGE OF MATERIALS

The materials are sensitive to humidity and partially used drums should be tightly sealed  to prevent the ingress of moisture.

Polyol Blend

The Polyol blend has a shelf life of six months from date of manufacture when stored in doors at temperatures of 20-30°C.The Polyol blend should be thoroughly mixed before use.

Isocyanate

The Isocyanate has a helf life of one year from date of manufacture when stored indoors  at temperatures of 20-30°C.Avoid storage temperatures of below 0°C (as some crystallization may occur) or above 50°C (as formation of insoluble solids may occur).