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3526 Phenolic Laminated Tube

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3526 Phenolic Laminated Cotton Cloth Tube is a heavy-duty electrical and mechanical insulation material crafted from high-tensile, scouring desizing cotton fabric thoroughly impregnated with premium phenolic resin. Compared to paper-based tubes, this cotton cloth laminate offers significantly higher longitudinal tensile strength, excellent impact resistance, and lower water absorption (≤4%).With a superior thermal stability rating of ≥130° C, it is specifically engineered for structural components that demand robust mechanical loads and complex precision machining.


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Product Description

3526 Phenolic Laminated Cotton Cloth Tube is a heavy-duty electrical and mechanical insulation material crafted from high-tensile, scouring desizing cotton fabric thoroughly impregnated with premium phenolic resin. Compared to paper-based tubes, this cotton cloth laminate offers significantly higher longitudinal tensile strength, excellent impact resistance, and lower water absorption (≤4%).

With a superior thermal stability rating of ≥130° C, it is specifically engineered for structural components that demand robust mechanical loads and complex precision machining.

1, Structure (composition): scouring desizing cotton cloth, phenolic resin;

2, Performance (summary): high longitudinal tensile strength and low water absorption;

3, Application (purpose): suitable for insulation structure parts with high mechanical strength requirements and bearing a variety of mechanical processing;

4, Minimum inner diameter ɸ10; maximum outer diameter ɸ800; minimum wall thickness: 2mm;

No.

Indicator

Unit

Index value

1

Density

g/cm3

1.04~1.20

2

Water absorption

%

≤4

3

Thermal stability (24h)

°C

≥130

4

Bending strength

Mpa

≥80

5

Compression strength

Mpa

≥45

6

Surface resistivity

Normal state

Ω

≥1.0 x 108

Be exposed to moisture

≥1.0 x 107

7

Volume resistivity

Normal state

Ω.m

≥1.0 x 107

Be exposed to moisture

≥1.0 x 105

8

Vertical laminar electrical strength (50Hz in 20°C±5°C transformer oil)

MV/m

≥3.5

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