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Acid & alkali resistant conveyor belt is suitable for chemical plant, chemical fertilizer plant, paper mill and other enterprises to transport bulk, granular and powder materials or finished articles containing acid or alkali.
Acid & alkali resistant conveyor belt is made of multi-ply rubberized nylon (NN) canvas or polyester (EP) canvas as framework material, covered with acid and alkali resistant coating rubber, and manufactured through calendering, molding, curing and other processes.
This product has good characteristics of chemical corrosion resistance, good physical properties, acid and alkali resistance, wear resistance, etc.
| Item | Type | ||
| NN、EP | |||
| Adhesion strength | Between coating and belt cores | Thickness of coating ＞1.5mm / ≥ N/mm | 3.5 |
| Thickness of coating: 0.8～1.5mm/ ≥ N/mm | 3.2 | ||
| Between layers ≥ N/mm | 4.5 | ||
| Longitudinal tensile strength value of full thickness belt / N/mm | 160～3150 | ||
| Elongation of longitudinal reference force of full thickness belt / % ≤ | 4 | ||
| Coating performance | Hardness | Performance before aging | 55－70 |
| Performance after aging | 75－85 | ||
| Breaking strength | Performance before aging /MPa ≥ | 15.0 | |
| Performance after aging /MPa ≥ | 12.0 | ||
| Elongation at break | Performance before aging /% ≥ | 400 | |
| Performance after aging /% ≥ | 200 | ||
| Abrasion / mm3 ≤ | 200 | ||
| Test conditions: ozone concentration (50 ± 5) × 10-8 (volume fraction), temperature (40 ± 2) ℃, elongation (20 ± 2)%, time 15 h, ozone aging test results shall be free of cracks. | |||
| Immersion solution: 18% hydrochloric acid (HCl), 50% sulfuric acid (H2SO4), 48% sodium hydroxide (NaOH) immersion conditions: temperature × time 50 ℃ × 96h
Volume expansion rate before and after immersion + 10%. |
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