Mary Ann A. Tradings

BR 1502 is one of the most widely used synthetic rubber.
Low temperature emulsion polymerized technique. Its wear resistance, aging resistance, ozone resistance, water - proofing, air tightness and homogenous are much better. Specification:


Testing Item Value Test Method
Volatile matter(% ) 0.75 - 0.90 GB/T6737
Ash content ≤0.50 GB/T4498A
Organic acid(% ) 4.50~6.75 GB/T8657A
Soap content(% ) ≤0.5
Combinated Styrene content(% ) 22.5~24.5 GB/T8658
Raw rubber mooney viscosity
ML(1 + 4)100℃ 44~55 GB/T1232.1
Compounded rubber mooney viscosity
ML(1 + 4)100℃≤ 93
300% Stretching Stress
(145℃)/MPa 25min 14.7~19.6 GB/T8656A
35min 20.6±2.5
50min 21.5±2.5
Tensile strength (145℃, 35min)/MPa ≥24.5
Elongationg at break (145℃, 35min)/% ≥330
Heat Distortion Temperature, 0.45MPa(66 psi) ℃ ASTM D648 77
Haze %
Transmittance % ASDM D541 91
Refractive Index ASDM D542 1.56