Basic Product Description
Nylon canvas or polyester canvas are selected as cores. Covering rubber is a mixture of natural rubber and cisbutadiene rubber. It has the characteristics of high elasticity, impact resistance and cold resistance. It can be used normally at minus 40 C.
Limit deviation of overburden thickness Executive standard：HG/T 3647--2014 |
Nominal thickness of upper and lower cover | Limit deviation |
≤4 | Upper deviation: Unspecified lower deviation：0.2mm |
＞4 | Upper deviation: Unspecified lower deviation: 5% of basic size |
Physical properties of overburden Executive standard：HG/T3647--2014 |
project | index |
H | D | L |
tensile strength Mpa (Not less than) | 24 | 18 | 15 |
Elongation at break/% (Not less than) | 450 | 400 | 350 |
Wear volume/mm3 | 120 | 100 | 200 |
Aging test（70℃×168h）Tensile strength change rate/% elongation change rate at break/% | -25~+25 | -25~+25 | -25~+25 |
Cold resistance | Tensile Strength Change Rate/% | C1(-45℃) | ±20 |
C2(-50℃) | ±25 |
Change rate of elongation at break/% | C1(-45℃) | ±20 |
C2(-50℃) | ±30 |
notes：C1-----The ambient temperature is：-45℃~+45℃；C2-----The ambient temperature is -50℃~+45℃ |
