3526 Phenolic Cotton Cloth Tube Product Description
Time of issue: 2026-04-09
3526 Phenolic Cotton Cloth Tube is a superior performance insulating composite material that is created through the combination of cotton cloth (reinforced with phenolic resin) and processed using high temperature/high pressure.
It has outstanding properties for electrical insulation, good mechanical strength and good dimensional stability; therefore, it has wide-ranging uses throughout electrical equipment, machinery manufacture and industrial structural components. Because of its consistent performance it is ideal as a material to use in a variety of engineering applications.
The manufacturing method of 3526 Phenolic Cotton Cloth Tube involves the impregnation of several layers of cotton cloth with phenolic resin followed by hot pressing and curing which produces a dense tubular composite structure.

This manufacturing process produces a composite material with uniform density throughout the material and strong internal bonding. The cotton fibres provide strength (toughness) and resistance to impact while the phenolic resin provides the composite with rigidity, thermal resistance and chemical resistance; the combination provides the material with the ability to provide stable performance when subjected to a wide range of complex working conditions.
From an electrical perspective, 3526 Phenolic Cotton Cloth Tube provides excellent insulating performance; it has a high dielectric strength, high voltage withstand, and provides excellent resistance against current leaking out or breaking down.
Due to its low moisture absorption characteristics, this Package also provides stable insulation characteristics in humid environments; therefore, it can be utilized in applications such as transformers, motors, switchgears and various other electrical insulating materials.
The compressive and tensile strength of the material is good, which allows it to carry mechanical loads without distorting. The stable structure of the material and dimensional accuracy also create suitable applications for bushings, sleeves, supports, and other structural components. The material will stay in shape during extended use and will resist aging, and will therefore contribute to increasing the service life of machinery or equipment.
The 3526 Phenolic Cotton Cloth Tube has good wear resistance and a low coefficient of friction. If this material is used for moving/sliding parts, it will help reduce the friction and the wear of those parts, therefore improving overall efficiency. Because of these characteristics, it is very well suited for continuous movement applications that require long-lasting durability.
The material has good thermal performance within a moderate range of temperatures. The tensile strength of the resin remains intact when exposed to heat, and the addition of cotton will enhance the stability of the product. Because of the ability of the material to function at different temperatures, the material can produce consistent performance in various industrial environments that have varying temperatures.
The material has good resistance to oils, greases, and a variety of other industrial chemicals. The low absorption properties of water aid in the material's dimensional stability and durability and help provide suitable performance in complicated working conditions.
Due to the ease of machining and the ability to be cut and drilled, and manufactured into various shapes / sizes as required for an application is why 3526 Phenolic Cotton Cloth Tube provides manufacturers with numerous standard and CUSTOM COMPONENTS with a variety of design possibilities across many engineering fields of study.
There are numerous applications of the 3526 Phenolic Cotton Cloth Tube in the following industries: Power Equipment; Electronics; Machinery Manufacturing; Automotive; Industrial automation. Some examples of where 3526 Phenolic Cotton Cloth tubes are used include:
Constructions of insulation supports, bushing, sleeves, spacers and other structures that require insulation and mechanical strength properties at the same time.
To conclude: 3526 Phenolic Cotton Cloth Tube is an excellent option for creating an integrated composite material that offers Insulation/Mechanical strength/Wear resistance/Chemical stability. Therefore, due to all of these characteristics, 3526 phenolic cotton cloth tube is an ideal selection for a multitude of industrial applications.
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