Naphthalene ring liquid crystal epoxy resin monomer and preparation method thereof, naphthalene ring liquid crystal epoxy resin and preparation method and application thereof

By designing a naphthalene ring liquid crystal epoxy resin monomer with super rigid and strong symmetric structure, the problems of high liquid crystal temperature intervals and excessive curing temperatures of existing liquid crystal epoxy resins are solved, and a naphthalene ring liquid crystal epoxy resin with low liquid crystal temperature intervals and excellent thermal conductivity are achieved, which is suitable for electronic packaging and thermal management fields.

CN119707878AActive Publication Date: 2025-03-28NORTHWESTERN POLYTECHNICAL UNIV
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Patent Information

Application Number
CN202411892441.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-20
Publication Date
2025-03-28
Estimated Expiration
2044-12-20

AI Technical Summary

Technical Problem

The liquid crystal temperature range of existing liquid crystal epoxy resins is high, which makes it difficult to eliminate bubbles during processing, affecting their thermal and mechanical properties, and excessive curing temperature will damage electronic devices.

Method used

By designing a naphthalene ring liquid crystal epoxy resin monomer, it contains naphthalene ring groups with super-rigid and strong symmetrical structures, it promotes π-π stacking between molecules, reduces the liquid crystal temperature interval, and prepares a naphthalene ring liquid crystal epoxy resin with excellent thermal conductivity and mechanical properties through specific synthesis methods such as dehydrogen bromide, hydrolysis and esterification reactions.

Benefits of technology

It has achieved the low liquid crystal temperature interval, excellent intrinsic thermal conductivity (λ is 0.40W/(m·K)), thermal performance and mechanical properties of naphthalene ring liquid crystal epoxy resin, and is suitable for electronic packaging and thermal management fields.

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Abstract

The invention provides a naphthalene ring liquid crystal epoxy resin monomer and a preparation method thereof, naphthalene ring liquid crystal epoxy resin and a preparation method and application thereof, and belongs to the field of high polymer materials. The naphthalene ring liquid crystal epoxy resin monomer disclosed by the invention contains a naphthalene ring group with a super-rigid and strong-symmetry structure, the pi-pi stacking effect between molecules of the naphthalene ring liquid crystal epoxy resin monomer is relatively strong, the order degree of a liquid crystal texture formed after curing is higher, the average free path of phonons is more favorably improved, and the naphthalene ring liquid crystal epoxy resin can be endowed with higher intrinsic lambda. Besides, the liquid crystal temperature interval of the naphthalene ring liquid crystal epoxy resin monomer can be effectively reduced due to the super-rigid and strong-symmetry structure of the naphthalene ring, meanwhile, the naphthalene ring liquid crystal epoxy resin can be endowed with excellent thermal performance and mechanical performance, and the application of the naphthalene ring liquid crystal epoxy resin in the fields of electronic packaging, thermal management and the like is expected to be widened. The result of the embodiment shows that the intrinsic lambda of the naphthalene ring liquid crystal epoxy resin provided by the invention is increased by about 122% compared with the intrinsic lambda of general epoxy resin.
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