Physical Function

The forming shortening rate of phenolic molding plastics depends on various factors, such as resin composition, filler variety, moisture content, and composition

Shape conditions, etc. The linear expansion coefficient of phenolic resin molding compound is closely related to the type of filler, followed by the glass fiber inside the plastic

The increase of inorganic fillers reduces the coefficient of linear expansion, while plastics containing synthetic fibers have a higher coefficient of linear expansion.

Mechanical function

The creep resistance of phenolic molding plastics at room temperature varies depending on the temperature of the filler, including mica, asbestos, etc

The molding compound with inorganic fillers has better creep resistance than the molding compound with organic fillers. Generally speaking, molds filled with glass fibers

Plastic has good tensile strength and flexural strength, and is less affected by temperature, while some fillers such as wood powder simply absorb moisture.This is all

It will cause a decrease in flexural strength and flexural modulus.

Electrical function

Phenolic resin plastic has outstanding electrical properties, such as high insulation at room temperature, high volume resistance, and high surface resistance

Surface resistance and breakdown voltage can be used as insulation materials, but their dielectric constant and dielectric loss tangent are relatively large and can only be used as

Application of power frequency insulation materials.

Corrosion resistance

Phenolic resin without fillers is virtually resistant to inorganic acid corrosion and insoluble in most hydrocarbons and chlorides

Insoluble in ketones and drunkenness. But it is not resistant to corrosion from concentrated sulfuric acid, nitric acid, high-temperature chromic acid, etc.

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