number

Test item

Standard request

result

1

Depending on the density

g/cm3

0.65±0.15

0.6

2

Tensile Strength

MPA

≥2.5

2.8

3

Elongation

%

100-400

338

4

Tensive strength

%

≥-15

-13

elongation

%

≥-25

-19

5

Ozone-resisting(tear 20%,40°C/72h)

-

No cracking

No cracking

6

Brittleness temperature

°C

≤-35

-38

7

Application temperature

°C

40°C~+120°C

40°C~+120°C