Evoprene™ 076

About
The Evoprene™ Standard series is based mostly on SBS (styrene-butadiene -styrene) block copolymer rather than the hydrogenated SEBS type. This is a lower cost polymerso these grades are generally available at reduced cost compared with the Evoprene™ G or GC grades. SBS is the block copolymer form of SBR rubber and the properties generally mirror those of its vulcanisable cousin. Compounds produced from SBS block copolymer are suitable for a wide range of applications including extruded door, window and furniture seals and rubbing strips, mats, bump stops, grommets, coat hanger pads, toy components etc. Compounds remain flexible to very low temperatures (-60°C, – 75°F) and can be used at up to +55 – 60°C (130 – 140°F). A wide range of hardnesses is available from the mid 20s Shore A to about 60 Shore D. Many compounds are formulated for good ozone resistance but whilst grades pigmented black can be used for external application non black grades will quickly harden and discolour outside.&&

About

The Evoprene™ Standard series is based mostly on SBS (styrene-butadiene -styrene) block copolymer rather than the hydrogenated SEBS type. This is a lower cost polymerso these grades are generally available at reduced cost compared with the Evoprene™ G or GC grades. SBS is the block copolymer form of SBR rubber and the properties generally mirror those of its vulcanisable cousin. Compounds produced from SBS block copolymer are suitable for a wide range of applications including extruded door, window and furniture seals and rubbing strips, mats, bump stops, grommets, coat hanger pads, toy components etc. Compounds remain flexible to very low temperatures (-60°C, – 75°F) and can be used at up to +55 – 60°C (130 – 140°F). A wide range of hardnesses is available from the mid 20s Shore A to about 60 Shore D. Many compounds are formulated for good ozone resistance but whilst grades pigmented black can be used for external application non black grades will quickly harden and discolour outside.&&

Product Description
Generic	SBS
Material Status	Commercial: Active
Features	Excellent Processability,Good Clarity,Good surface appearance,Renewable resources,Block Copolymer,Elastic,Ozone resistance,Good coloring
Availabilitys	North America,Europe
Process Methods	Injection Molding

Technical Data
PHYSICAL	Nominal value	Unit	Test method
Density	1.12	g/cm³	ISO 2782
Shrinkage rate	0.50 to 1.2	%

elastic body	Nominal value	Unit	Test method
tensile strength
yield	4.80	MPa	ISO 37
100% strain	1.70	MPa	ISO 37
Tensile strain
fracture	610	%	ISO 37
tear strength	27	kN/m	ISO 34-1
Compression deformation
22℃，72 hr	18	%	ISO 815

MECHANICAL	Nominal value	Unit	Test method
Shore hardness
Shaw’s A	60		ISO 868

Supplementary information	Nominal value	Unit	Test method
M-S Flow	1.77	MPa	Internal Method
Ozone resistance	pass		Internal Method

Process Conditions
injection	Nominal value	Unit	Test method
Proposed maximum recycled material ratio	20	%
Barrel rear temperature	160 to 180	°C
Barrel middle temperature	160 to 180	°C
Barrel front temperature	160 to 180	°C
Nozzle temperature	150 to 170	°C
Processing (melt) temperature	220	°C
Mold temperature	15 to 30	°C
Injection speed	Fast
Vent depth	0.020 to 0.050	mm

Notes
1. Typical properties: these are not to be construed as specifications.
2. Method Ba, Angle (Unnicked)
3. 100 pphm, 20%str
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