DuPont™ Surlyn® 8120 Ionomer Resin, Sodium

Surlyn® 8120 thermoplastic resin is an advanced ethylene/methacrylic acid (E/MAA) copolymer, in which the MAA acid groups have been partially neutralized with sodium ions. The amount of MAA and neutralization levels for this grade are optimized to deliver higher hardness and stiffness compared with other sodium ionomer grades. In golf ball covers, the resin is used primarily in blends with other grades to improve cut resistance and impact durability, as well as increased resilience and coefficient of restitution. The resin also offers high clarity and good abrasion resistance. It can be injection or blow molded, and is processable by extrusion into sheets or shapes.

Data provided by the manufacturer.

物理性能	额定值 (公制)	额定值 (英制)	测试方法
密度	g/cc	lb/in³	ASTM D792
熔体流动速率	g/10 min @Load 2.16 kg, Temperature 190 °C	g/10 min @Load 4.76 lb, Temperature 374 °F	condition E; ASTM D1238

机械性能	额定值 (公制)	额定值 (英制)	测试方法
肖氏硬度 (邵氏 D)			ASTM D2240
极限抗拉强度	MPa	psi	ASTM D638
抗张强度(屈服)	MPa	psi	50 mm/min cross speed; ASTM D638
伸长率 (断裂)			ASTM D638
弯曲模量	GPa	ksi	ASTM D790
悬壁梁缺口冲击强度			ASTM D256
拉伸冲击强度	kJ/m²	ft-lb/in²	ASTM D1822S

热性能	额定值 (公制)	额定值 (英制)	测试方法
熔融温度	°C	°F	DSC
维卡软化温度	°C	°F	Rate B, ASTM D1525-70