国标 GB/T 12952 标准 聚氯乙烯防水卷材

拉伸强度
Tensile Strength

Section 5.5

7 working days

120×25mm, 10 pcs/方向
(通常分纵向和横向两个方向)

断裂伸长率
Elongation at Break

热处理尺寸变化率
Dimensional Change after High Temperature Conditioning

Section 5.6

7 working days

100×100mm, 5 pcs

低温弯折性
Foldability at Low Temperature

Section 5.7

7 working days

100×50mm, 5 pcs

剪切状态下的粘合性
Shear Bonding Strength

Section 5.10

7 working days

200×300mm, 5 pcs

热老化处理
High Temperature Aging

Section 5.11

7 working days

300×200mm, 5 pcs

测试条件:
80℃, 168h.
老化后做拉伸性能和低温弯折性测试.

耐化学侵蚀
Exposure to Liquid Chemicals

Section 5.12

30 working days

300×200mm, 5 pcs/溶剂
(标准规定测试溶剂为10％NaCl溶液、饱和Ca(OH)2溶液、5％H2SO4溶液)

测试条件:
23℃, 28d.
老化后做拉伸性能和低温弯折性测试.

人工气候加速老化
Artificial Weathering

Section 5.13

40 working days

300×200mm, 5 pcs

氙灯老化,测试时间1000小时.老化后做拉伸性能和低温弯折性测试.