Item

Unit

Specification

Standard

Density

Kg/m³

≤95

GB/T6343

Flammability

Oxygen index

%

≥32

GB/T2406

SDR

——

≤75

GB/T8627

Conductivity factor

Average temperature

-20°C

0°C

40°C

W/(m.k)

≤0.031

≤0.034

≤0.036

GB/T10294

Watervapor permeability

Coefficient

g/(m.s.pa)

≤2.8*10-11

GB/T17146-1997

Factor

——

≥7.0*10³

Water absorption ratio in vacuum

%

≤10

GB/T17794-2008

Dimension stability

105±3°C,7d

%

≤10

GB/T8811

Crack resistance

N/cm

≥2.5

GB/T10808

Compression resilience ratio

Compression time 72h

%

≥70

GB/T6669-2001

Anti-ozone

Ozone pressure 202mpa

200h

——

Not cracking

GB/T7762

Aging resistance

150h

——

Slightly crumpling,

no cracks,

GB/T16259

Temperature

°C

-40°C——110°C

GB/T17794