Research Progress of Phosphorus-based Flame Retardant Epoxy Electronic Packaging Materials
Phosphorus-based flame retardant epoxy is an important packaging material for 5G communications,smart electronics and semiconductors due to its advantages of high flame retardant efficiency,low preparation cost and small environmental hazards.Based on the performance requirements of high efficiency phosphorus-based flame-retardant epoxy packaging materials,the types and flame-retardant mechanism of phosphorus-based flame-retardant epoxy were introduced,the application of phosphorus-based flame retardant epoxy in electronic packaging was reviewed,and the future development trend was prospected.It was pointed out that the preparation of intrinsic(reactive)phosphorus-based flame retardant epoxy was difficult and the content of available phosphorus was low,so it was necessary to further optimize the process and increase the phosphorus content in the packaging system.In contrast,the filled phosphorus-based flame retardant epoxy was the most widely used in electronic packaging due to its simple preparation process,various flame retardants and high phosphorus content.
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