High Mechanical Strength Light Weight Vacuum Casting PP like

		UP 5690-W or-K POLYOL	UP 5690   ISOCYANATE	UP 5690 C	MIXED
Composition		Polyol	Isocyanate	Polyol
Mix ratio by weight		100	100	0 - 50
Aspect		liquid	liquid	liquid	liquid
Colour		W= WhiteK= Black	Colourless	Milk white	AW/B/C=White AK/B/C=Black
Viscosity at 23°C  (mPa.s)	BROOKFIELD LVT	1000 - 1500	140 - 180	4500 - 5000	500 - 700
Viscosity at 40°C  (mPa.s)	BROOKFIELD LVT	400 - 600	-	2300 - 2500	300 - 500
Specific gravity at 25°CSpecific gravity of curedproduct at 23°C	ISO 1675 :1975 ISO 2781 :1988	1.06-	1.15-	1.06-	-1.13
Pot life at 25°C on 100 g  (min)					10 - 15
Pot life at 40°C on 100 g  (min)					5 - 7

PROCESSING CONDITIONS (Vacuum casting machine) • Preheat isocyanate to 23 - 30°C in case of being stored below 20°C . • Preheat polyol and part C to 40°C before using. It is necessary to stir the polyol until both color and aspect become homogeneous. • Weigh the components according to the mixing ratio, put isocyanate into the upper cup, add part C in polyol to premix. • Pour isocyanate into polyol (containing Part C) and mix for 1 - 2 minutes after degassing for 10 minutes seperately. • Cast under vacuum in silicone mould preheated to 70°C. • Demould after 60 - 90 minutes at 70°C (The more Part C is used, the longer demoulding time is needed)..

A/B/C			100/100/0	100/100/20	100/100/30	100/100/50
Hardness	ISO 868 : 2003	Shore D	83	80	78	75
Tensile strength	ISO 527 : 1993	MPa	35	30	28	25
Flexural strength	ISO 178 : 2001	MPa	50	35	30	20
Flexural modulus	ISO 178 : 2001	MPa	1300	1000	900	600
Elongation at break	ISO 527 : 1993	%	50	60	65	90
Impact strength(CHARPY)Unnotched specimens	ISO 179/2D : 1994	KJ/m2	100	90	85	75

A/B/C			100/100/0	100/100/20	100/100/30	100/100/50
Glass transition temperature (Tg)	(1)	°C	85	78	75	65
Linear shrinkage		%	0.35	0.35	0.35	0.35
Demoulding time (2 - 3mm)  at 70°C		min	60 - 90

Average values obtained on standard specimens / Hardening 16hr at  80°C after demoulding. Handling Precautions Normal health and safety precautions should be observed when handling these products : Ensure good ventilation Wear gloves, safety glasses and protective clothes. For further information, please consult the product safety data sheet. Storage Conditions Shelf life is 6 months in a dry place and in original unopened containers at a temperature between 15 and 25° C. Any open can must be tightly closed under dry nitrogen blanket.