Hot Spray Polyurea for Waterproofing, Surface Protection, and Industrial Floors

No.

Test Item

Technical Requirement

Test Result

1

Solid Content (%)

≥98

99

2

Gel Time (s)

≤45

16

3

Surface Dry Time (s)

≤120

20

4

Tensile Strength (MPa)

≥16.0

16.24

5

Elongation at Break (%)

≥450

460

6

Tear Strength (N/mm)

≥50

66

7

Low-temperature Bending (℃)

≤-40

-40

8

Water Impermeability

0.4 MPa, impermeable for 2h

Impermeable

9

Heating Elongation (%)

Elongation / contraction ≤1.0

0.4

10

Bond Strength (MPa)

≥2.5

3

11

Water Absorption (%)

≤5.0

0.5

12

Thermal Aging & Artificial Weathering Appearance

No cracks & deformation

No cracks & deformation

13

Thermal Aging Performance

Tensile Strength Retention Rate (%)

80–150

97

Elongation at Break (%)

≥400

411

Low-temperature Bending (℃)

≤-35

-35, no crack

14

Alkali Resistance Performance

Tensile Strength Retention Rate (%)

80–150

103

Elongation at Break (%)

≥400

413

Low-temperature Bending (℃)

≤-35

-35, no crack

15

Acid Resistance Performance

Tensile Strength Retention Rate (%)

80–150

99

Elongation at Break (%)

≥400

410

Low-temperature Bending (℃)

≤-35

-35, no crack

16

Salt Resistance Performance

Tensile Strength Retention Rate (%)

80–150

97

Elongation at Break (%)

≥400

409

Low-temperature Bending (℃)

≤-35

-35, no crack

17

Artificial Weathering Performance

Tensile Strength Retention Rate (%)

80–150

83

Elongation at Break (%)

≥400

408

Low-temperature Bending (℃)

≤-35

-35, no crack

18

Hardness (Shore A)

≥80

85

19

Abrasion Loss (750g/500r, mg)

≤30

1

20

Impact Resistance (kg·m)

≥1.0

1.0 kg·m, intact