Adhesive Phenol-formaldehyde Resin For Rubber CAS 9003-35-4

What is Adhesive Phenol-formaldehyde resin for rubber CAS 9003-35-4?

The compound corresponding to CAS 9003-35-4 is phenol-formaldehyde resin, also called phenolic resin, produced by the polycondensation of phenol and formaldehyde under acidic or alkaline catalysts. Its chemical structure is based on (C₆H₅OH・CH₂O)ₙ, featuring both thermoplastic and thermosetting properties, with wide applications in industrial manufacturing and scientific research.

Phenol-formaldehyde resin typically exists as a yellow-to-brown solid, having a density of 1.25–1.30 g/cm³, a glass transition temperature of 75–105 degree , and a thermal decomposition temperature of approximately 160 degree . It releases formaldehyde and phenol at high temperatures.

Adhesive Phenol-formaldehyde resin for rubber CAS 9003-35-4

In the automotive and aerospace industries, phenol-formaldehyde resin serves as a binder for brake pads and clutch plates, maintaining stability under high temperatures; carbon fiber-reinforced phenolic resin is utilized for rocket engine ablation-resistant components. In construction and decoration, phenolic foam functions as a thermal insulation material. Within composite materials, it is impregnated with glass fiber or asbestos to produce laminates, applied in chemical pipeline linings and corrosion-resistant equipment.

Phenol-formaldehyde resin is irritating to the skin and eyes, and protective equipment is required when handling it.
Long-term contact or inhalation of phenolic resin vapor may cause respiratory irritation and skin allergies.
Phenol-formaldehyde resin should be avoided from being exposed to high temperatures or open flames to prevent it from decomposing and producing harmful gases.

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