1.Physical and mechanical properties of covering layer:
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Property level
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Tensile strength≥ (Mpa)
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Tensile yield≥ %
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Abrasion value≤ mm3
|
H
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24.0
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450
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120
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D
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18.0
|
400
|
100
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L
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15.0
|
350
|
200
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2.Tensile property of through thickness:a. The longitudinal tensile strength is not lower than the following nominal value: 160 200 250 315 400 500 600 630 800 N/mm.b. The elongation at brake of through thickness belt should not less than 10%,
c. The elongation at reference load of trough thickness belt should no more than 4%,d. Linearity: no more than 25mm.e. Ply adhesion:
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Index description
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Strength between layers≥
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Cover layer and fabric layer
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Thickness of cover layer≤1.5mm
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Thickness of cover layer >1.5mm
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Average of all samples
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3.2N/mm
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2.1N/mm
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2.7N/mm
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|