Novolac Phenolic Resin
Viscous Behaviour:
- Becomes a thick, sticky melt when heated above softening temperatures.
Appearance:
- Amber to dark brown brittle solid, flakes, or powder.
Shelf Life:
- Exceptional stability; solid resins last years if kept dry.
TYPICAL PROPERTIES TABLES
|
PROPERTY |
TYPICAL VALUES |
|
Density |
1.25 to 1.30 g/cm³ |
|
Solid Content |
98% to 100% |
|
Free Phenol |
≤ 0.5 % |
|
Free Formaldehyde |
≤ 0.1 % |
Usage:
- Friction Materials: Binds automotive brake pads and clutch facings to resist thermal fade.
- Abrasives: Secures grains in high-speed grinding wheels against centrifugal and thermal stress.
- Foundry Curing: Binds resin-coated sand in shell molding for high hot-tensile strength.
- Epoxy Intermediates: Converted to multi-functional epoxies for chemical-resistant coatings and electronic encapsulants.