Xenopren PP KD 40

Xenopren® PP-KD-40 is a polypropylene homopolymer filled to 40% with chalk. This material contains a mineral filler, which substantially modifies certain properties of basic polymer and, in particular, increases its flexural modulus of elasticity, dimensional stability and thermal resistance. This filled grade is recommended for injection-moulded manufactured items, and especially for the automotives. Products, made of chalk modified polypropylene are also used in electrical engineering and electric houshold items. Processing of Xenopren® PP-KD-40 requires injection moulding machines with pressure of injection 80-100MPa. Recommended cylinder temperature should be about 2300C and mould temperature 600C. The average moulding shrinkage of this material is 1,5%.

PROPERTIES	TEST METHODS	UNITS	PP-KD-40
Tensile stress at yield	PN-81/C-89034 ISO 527	MPa, NLT	15
Elongation at yield	PN-81/C-89034 ISO 527	%, NLT	8
Elongation at break	PN-81/C-89034 ISO 527	%, NLT	55
Izod notched impact strenght (230C)	PN-85/C-89050 ISO 180	kJ/m­­2, NLT	3,0
Melt flow rate	PN-93/C-89069 ISO 1133	g/10min	4÷7
Determination of ash	PN-93/C-89439 IS0 3451	%	40±2
Flammability	UL 94		HB

The values have been determined on standard injection-moulded specimens in black colour. The specimens were normalized according to ASTM D 618 A [ 40 h, 230C, 50% RH ]