Marine cable sheathing compound
This product is produced according to GB/T 7594.9-87 standards; ordinary duty flame-retardant rubber sheath 85 Centigrade.
List 2  Indicator requirements and measured performance             

No.	Test item		Unit	Requirements	Results
Before aging	Tensile strength		Mpa	≥10.0	11.9
	Elongation at break		％	≥300	457
Air oven aging test	Ageing condition	Temperature	ºC	100±2	100±2
		Time	h	7×24	7×24
	Change rate of anti-expansion strength		％	±30	-6
	Elongation at break after aging	Median	％	≥250	425
		Change rate	％	±40	-7
Thermal extension test	Test conditions	Air temperature	ºC	200±3	200±3
		Load time	min	15	15
		Mechanical stress	N/cm2	20	20
	Elongation under load		％	≤175	15
	Permanent deformation after cooling		％	≤15	8.6
Oil immersion test	Test conditions	Oil temperature	ºC	100±2	100±2
		Oil immersion time	h	24	24
	Tensile strength change rate		％	±40	-5
	Change rate of elongation at break		％	±40	2