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Help CenterPhenolic Paper Board 3021 for Switch Board Processing
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Specifications
1.Insulation phenolic sheet manufacture2.Excellent electrical insulation
3.Good mechanical rigidity
Name: Phenolic resin board 3021
Color: Brown
Type: Sheet
Description
Bakelite sheet is a hard, dense material made by applying heat and pressure to layers of paper or glass cloth impregnated with phenolic resin. These layers of laminations are usually of cellulose paper, cotton fabrics, synthetic yarn fabrics, glass fabrics or unwoven fabrics. When heat and pressure are applied to the layers, a chemical reaction (polymerization) transforms the layers into a high-pressure thermosetting industrial laminated plastic.
Technical requirement for surface
The surface shall tidy and smooth, bubble, impurity are not allowed. But slight scratch and color punctum are allowed. Edge is to be cut smooth. The delamination and crackle on
the end surface are not allowed .
The surface shall tidy and smooth, bubble, impurity are not allowed. But slight scratch and color punctum are allowed. Edge is to be cut smooth. The delamination and crackle on
the end surface are not allowed .
Feature
High mechanical properties, and oil resistance and certain dielectric property.
Thermal rating is 120, and temperature resistance :130 centidegrees
Application
Electronic mechanical parts, switches bottom board
All kinds of carbon film potentiometer
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