High temperature resistant silicone strip manufacturers introduce epDM rubber strip grades for you, each grade has a different proportion of ethylene and propylene. The amount of diene rubber usually has ethylene in the range of 45-85% (mol) (or 40-80% by weight), but is usually sold to the amount of ethylene. About 50-70% (mol) of diene and 3-11 % of diene in spite of the widely used range of quantities, there are three types of dicyclopentadiene (DCPD) and ethylenenorbornene (ENB) and trans. -1, 4-hexadiene (1,4HD), but commonly used types include ENB due to rubber molecular reaction or sulfide polymerization reaction stability, high sulfur sensitivity. While the use of 1, 4-HD allows the tire to react more slowly to maintain the performance of rubber ENB, it is better. Heat resistance includes mixing and molding rubber, which will be easier because the reaction of a linear (linear molecule) molecular structure in the tire in DCPD resin will likely be a slow process.

The ratio of ethylene ternary to propylene rubber, which has a direct effect on the performance of rubber. That is, tires with high doses of ethylene will be strong and stable and not high. But when the amount of ethylene goes down. Fingerboard prizes are soft and elastic.

In addition to the classification of type and amount of diene, as well as the ratio of ethylene to propylene before. Epdm rubber grade is also divided by the viscosity (molecular weight) and the Mooney viscosity of the tire can be divided into three groups, obtained.

1. Low to medium viscosity grades (low to medium viscosity) with viscosity in the range of 25 to 60 ML (1+4) @100℃.

2 rubber medium to high viscosity grade (medium - high viscosity) in the range of 60 to 100 viscosity ML (1+4) @125℃.

3. Tire very high viscosity class (very high viscosity) at 100? Viscosity in the range of 200 ML (1+4) @125℃. Rubber grade, with low viscosity, although it can also be easily processed. But there are just the right amount of fillers for a cheaper product.

Natural rubber manufacturers tell you that epDM rubber strip at room temperature has a relatively low density than other rubber around 0.86-0.87 g/cc and other physical properties of about -60℃ glass transition temperature.