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Natural rubber sheet
Natural rubber sheet Natural rubber sheet Natural rubber sheet Natural rubber sheet Natural rubber sheet

Natural rubber sheet

Natural rubber (NR) refers to natural latex collected from rubber trees, processed through procedures such as coagulation and drying to produce elastic solid material (raw rubber).   Its primary chemical component is rubber hydrocarbon, typically comprising over 90%, with the remaining components including proteins, fatty acids, sugars, and other organic substances.   The microstructure of natural rubber mainly consists of large molecular chain-like structures, with a wide range of molecular weights, but the majority have molecular weights around thirty thousand, resulting in high strength, reaching up to three megapascals.   Qihang Rubber uses high-quality natural rubber latex as raw material, incorporates other additives based on a formulation, and through a specialized wet rubber refining process, produces wear-resistant natural rubber sheets with a natural rubber content exceeding 95%.   Thanks to improved process design, it preserves the unique long molecular chain structure of natural rubber, retaining its high strength and exceptional wear resistance, making it the best choice for wear-resistant rubber products under wet grinding conditions.   Since its introduction to the market, it has earned customers’ trust due to its superior quality compared to peers and highly competitive pricing.   It finds extensive use as wear-resistant linings in various industrial equipment, such as pump impellers, hydrocyclones, screen plates, and liners for screening equipment, conveying pipes and bends, valves and sealing components, slurry pumps, sludge pumps, and more.   Additionally, it is used in products like floor scrubber squeegees and rubber timing belts.   

Product Description
Test Standard Natural(NR)Abrasion Rubber Sheet Synthetic Rubber sheet
L36 NR 38 NR 40 NR 60 CR60 NBR55 BUT60
Material   LATEX NR 3528 NR 3534 NR 35FG NR 35OZ NR 4030 NR 4088 NR 4542 NR 6007 NR 60246 CR 5510X N 5547 I 16009
Color   Red Red Red White Black Red Red Red Black Red Black Orange Black
Specific Gravity(g/cm3) ASTM D397 0.96±0.03 0.98±0.03 0.98±0.03 0.98±0.03 1.05±0.03 1.05±0.05 1.05±0.05 1.2±0.05 1.15±0.05 1.10±0.03 1.40±0.05 1.80±0.05 1.58±0.05
Hardness(Shore A) ASTM D2240 36±3 38±3 38±3 38±3 38±3 40±3 40±3 40±3 60±3 60±3 60±5 60±5 60±5
Tensile Strength (Mpa) ASTM D412 23min 23min 23min 20min 18min 18 20 18 18 27min 15min 12min 7min
Elongation at Break (%) ASTM D412 800 720 720 720 650min 650 650min 400 450 650min 400 680min 400min
Tear Stength (N/mm) ASTM D624 40min 35 35 45 35 40 40 30 80 101 35 40 40
Abrasion resistance @ 5N(mm3) ASTM D5963 103% 80 70 - 130 125 90 180 120@10N(mm3) 70   90  
Resilience (%)   80 75 75 65 75 70 70 50 50 55      
Compression Deformation% (70@ 22hr) ASTM D395 20%max 20%max 20%max 25%max 20%max 35%max 35%max 45%max 45%max 25%max 30%max 20%max 30%max
PAHS(mg/kg)   ≤5 ≤5 ≤5 ≤5 ≤5 ≤5 ≤5 ≤10 ≤10 ≤5 ≤10 ≤10 ≤10
Operating Temperatures()   -40 to +80 -40 to +80 -40 to +80 -40 to +80 -40 to +80 -40 to +80 -40 to +80 -40 to +80 -40 to +80 -40 to +80 -40 to +120 -40 to +120 -40 to +120
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