... two types of SBR1502/1712 were widely used in tyres, cycle tire, rubber overshoes, plastic hosoe tapes, ... T12824-2002)ItemPropertyTest MethodABCVolatile matter %≤0.60≤0.75≤0.90GB/T 6737-1997Ash %≤0.50GB/T 4498-1997 AOrganic acid ... ASTM IRB No.7300%Modulus (145),MPa25min9.8-13.89.3-14.3GB/T 8656-1998 ASTM ... 5-17.5145,35min), MPa Tensile strength≥19.4≥18.4(145,35min), % Elongation≥380≥370 Styrene ...