Thermal recycling

At the appropriate temperature, the waste phenolic resin is gradually pyrolyzed to phenol and aldehyde. Since phenols and aldehydes have different boiling points at different temperatures, this property can be used to separate them.^[1]By collecting and purifying the phenols and aldehydes produced separately, high-quality phenolic resin raw materials can finally be obtained.

Through experiments, it can be found that the use of high-temperature pyrolysis to treat waste phenolic resin can efficiently recover phenolic and aldehyde to obtain high-quality raw materials. The advantages of this method are low processing cost, high recycling efficiency, environmental friendliness, and can play a good role in practical applications.^[1] However, equipment and conditions still need to be further optimized to achieve higher recycling efficiency and production efficiency, and to explore the application potential in a wider range of fields.

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Fig.1 Development flow and new analytical approach^[1]

Phenolic resin

Phenolic resin

Sustainability

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