atactic polypropylene(app) modified bituminous sheet material -九游会真人

ⅰ

ⅱ

py

g

py

g

pyg

1

soluble content

(g/㎡)≥

3mm

2100

—

4mm

2900

—

5mm

3500

experimental phenomena

—

base not burning

—

base not burning

2

heat resistance

℃

110

130

≤mm

2

experimental phenomena

no flow, dripping

3

low temperature flexibility

-7

-15

non-flaw

4

waterproofness30min

0.3mpa

0.2mpa

0.3mpa

5

tensile force

the maximum peak tensile（n/50mm） ≥

500

350

800

500

900

the second-rate peak tensile（n/50mm） ≥

—

—

—

—

800

experimental phenomena

in the stretching process, the center of specimen without bitumen coating cracking or base separation phenomenon

6

extensibility

the maximum peak expands rate% ≥

25

—

40

—

—

the second peak expands rate% ≥

—

—

15

7

after flooding quality increase%

pe.s

1.0

m

2.0

8

thermal ageing

pull retention/% ≥

90

elongation rate% ≥

80

low temperature flexibility/℃

-2

-10

non-flaw

dimensional change rate /% ≤

0.7

—

0.7

—

0.3

mass loss rate/% ≤

1.0

9

seam peeling strength/(n/mm) ≥

1.0