Polyol for Moulded Foam

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Product Description

Product Description

ROYAL INDUSTRIES

Manuf. Of the Polyol Systems & Allied Products

TECHNICAL DATA SHEET

GEPEX-276-NPR (CFC FREE) Formulated Polyether Polyol

Specially developed for use in manufacture of flexible cold cure polyurethane for automotive (two Wheeler Seats)

GEPEX-276-NPR is fully catalysed and water blowing system, which can be used on high or low pressure machine also hand mix. The above system provide:-

- fast curing

- good foam stability/processability in combination with easy foam crushability;

- slow foam reactivity/growing profile particularly suitable for intricate mold, multi-pouring

technology and dual hardness technology ( varying the Iso/Pol ratio);

- wide foam load bearing latitude;

- wide foam mold temperature latitude;

- long components (Iso and Pol) chemical stability;

- very good industrial hygiene performance.

Typical Chemical Property :-

Property	Unit	GEPEX-276-NPR
OH Number	mg KOH/g	34 36
NCO content	%	---
Colour		White
Viscosity at 25 C	mpasxsec	1400 1600
Specific gravity 25C/25C		1 1.05
Storage Temperature	C	20 25
Storage stability (1)		4 Month

Ratio : GEPEX-276 -NPR - 100 pbw

MDI - 70 85 / pbw

REACTION CHARACTERISTICS (Iso/Pol temperature 25/30 C)

Actual values vary depending on processing conditions.

Unit

Hand-mix

High pressure

machine

Cream time

sec

20-25 Sec.

10 12

Gel time

sec

120-125 Sec.

60 65

PROCESSING CONDITIONS

Polyol may become not homogenous; therefore each drum could need a properly mixing before the use.

Molds must be treated with a proper release agent.

Typical

Components temperature Iso/Pol C

20 - 25/ 20 - 25deg C

Typical molds temperature C

40 <-> 45

Demolding time min

5.0 - 6.0 (depending mainly on Iso/Pol

ratio)

Foam Property:-

Working ratio at Pol 100/Iso	Pbw		75 85
Core density	g/l	ISO 845	60 70
Tensile Strength	KPa	ASTM 3574	142 145
Elongation at Break	%	"	101 102
Tear Strength	N/cm	"	2.2 2.4
Resilience (Ball rebound)	%	UNI 6357	58 60
Compression Set (50%;1skin)	%	ISO 1856 Method A	7.8 8.0
C.F.D. 40%	KPa	DIN 53577	6.5 7
Flame Characteristic	-	B3	-

FLAME CHARACTERISTIC : (Flame propagation and/or flame rates don't

represent the true hazard when the polymer is

exposed to real fire condition).

For detail information read MSDS of product relating to handling and emergency procedure.

Warning : This information in this data sheet is believe to be correct but all recommendation are made without warranty since the condition of use are beyond the company control. Royal disclaim any liability in connection with the use of the information and does not warrant against infringement by reason of the use of any of its products in combination with other materials in any process.