Polyvinyl chloride (PVC) waterproof coiled material

No.

Item

Index

P(Enhanced)

L(Backing type)

H(Homogeneous type)

1

Thickness of resin layer on middle tire base,mm        ≥

0.40

-

2

Maximum tension,N/cm                     ≥

250

200

-

Tensile strength，MPa                     ≥

-

-

12

3

Elongation at maximum tension，％               ≥

15

-

-

Elongation at break，%                     ≥

-

250

500

4

Dimensional change rate of heat treatment，％  ≤

0.5

1.0

2.0

5

Low temperature bending

-40℃ No crack

6

Impermeability

0.3MPa，2h,Impervious

7

Impact resistance

0.5kg·m,Impervious

8

Anti static load

20kgImpervious

-

-

9

Joint peel strength，N/mm                ≥

3.0

4.0

10

Right angle tear strength，N/mm                ≥

-

-

60

11

Trapezoid tear strength，N                   ≥

450

250

-

12

Water absorption（70℃ 168h），%             ≤

4.0

13

Thermal aging

(115℃)

Time

672h

Appearance

No blistering, cracks, delamination, bonding and holes

Maximum tension retention,％         ≥

90

90

-

Tensile strength retention,％         ≥

-

-

90

Elongation retention at maximum tension,％ ≥

90

-

-

Elongation at break retention,％       ≥

-

90

90

Low temperature bending

-40℃ No crack

14

Chemical resistance

Appearance

No blistering, cracks, delamination, bonding and holes

Maximum tension retention,％         ≥

90

90

-

Tensile strength retention,％         ≥

-

-

90

Elongation retention at maximum tension，％ ≥

90

-

-

Elongation at break retention，％       ≥

-

<span style="font-fam