Phenol-Formaldehyde Physical & Chemical properties detailed guide.[2023]

The phenol-formaldehyde short form is PF. Phenol-formaldehyde is a resin. Phenol formaldehyde was the first commercial synthetic resin. Phenol–formaldehyde is the resin that is durable and inexpensive.

Physical properties of Phenol-Formaldehyde

Mechanical properties

• Mechanical and thermal properties are mainly dependent on the type of filler used.
• Retention of physical properties at elevated temperatures sets phenolic apart from plastic materials.
• Phenolic molding has good flexural strength retention in a wide range of temperatures.
• Phenolic molding compounds filled with asbestos and special fillers have a higher continuous service temperature range of 252 to 280°C.
• Impact resistance and hardness is a function of filler and the resin type as well as cure.

Electrical properties 

• As the moldings are polar the electrical insulation properties and not outstanding but are adequate for many purposes.
• one disadvantage of phenolic compared with amino plastics and alkyd resins are their poor tracking resistance under conditions of high humidity.

Chemical properties of phenol-formaldehyde

Resistance to chemicals 

• PF materials are readily attached by aqueous sodium hydride solution but cresol and xylenol based resin are more resistant.
• PF moldings are resistant to acid except for 50% sulphuric acid, formic acid, and oxidizing acids.

Weathering resistance 

• On continued weathering, the phenolic molding retain their properties however the surface becomes rough and malt.
• The yellow-brown self coloration of phenolic molding materials darkens on the exposure of heat and light.

Resistance to high energy radiation.

• Phenolic resin are resistant to radiation.
• The best are the asbestos moulding compound.

Flammability 

• Flammability of PF moulding compounds depend on the basic substance and additives.

Toxicological assessment 

• If good ventilation is provided no health risk in the manufacture and processing of PF moulding compounds.
• Utensils made from PF moulding compounds which come into contact with any type of food or condiments are not permitted.

FAQ about the Phenol-Formaldehyde physical properties.

Conclusion

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