Chemical plant，chemical fertilizer plant，paper-marking factory.
1. As the belt core consists of cotton-duck, nylon-duck or EP-duck, the belt has good features elasticity, excellent troughability, and low elongation. 2. The rubber cover, made of chemical resistant materials, has good anti-chemical corrosive and physical performance.
Physical property of rubber under hot air accelerated aging test(test condition: 50°C*96h).
|Class||Solution||Concentration||Covered condition||The change rate before and after coverd|
|Volume expansivity||Strength change rate|
|A1||(HCI)||18%||50°C x 96h||≥10%||≤10%|
|A2||(H2S04)||50%||50°C x 96h||≥10%||≤10%|
|A3||(NaOH)||48%||50°C x 96h||>10%||<10%|
|Item||Breaking strength (MPa)||Elongation at break (%)||Abrasion (mm3)||Hardness (° )|
|Performance before aging||≥14.0||≥400||≤250||60 + 10/-5|
|Performance after aging||≥12.0||≥350||-||65 + 10/-5|
When the thickness of the cover rubber is 0.8mm-1.6mm, the sample thickness can be the maximum cut length, the tensile strength and the elongation at break are allowed to be 15% lower than those in the table.
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