Design of h-BN-Filled Cyanate/Epoxy Thermal Conductive Composite with Stable Dielectric Properties

Lei, Yangxue; Han, Zengmao; Ren, Dengxun; Pan, Hai; Xu, Mingzhen; Liu, Xiaobo

doi:10.1007/s13233-018-6090-4

Cited by 30 publications

(17 citation statements)

References 19 publications

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“…Similar result was also observed by other study. 22 It can be attributed to two reasons: First, the addition of BN 0.5 μm has influenced the cross-linking degree to some extent, which would result in a kind of loose threedimensional network; second, the special interfacial interaction between BN 0.5 μm and the resin matrix, which included a high constant or the higher mobility for the interfacial healing processes and can be attributed to the π-stacking noncovalent interactions in this system.…”

Section: Loi and Ul-94 Rating Testsmentioning

confidence: 99%

“…It is noticeable that the new thermal conductive composites should also possess low permittivity and loss and excellent flame retardancy; however, many previous works focused on their thermal conductivity and dielectric properties but rarely consider flame retardancy.…”

Section: Introductionmentioning

confidence: 99%

“…16 Boron nitride (BN) has caught great interest because of its high thermal conductivity, superior chemical stability, electrical insulation properties, a large band gap, lack of toxicity, light weight, medium price, and outstanding high temperature resistance. [17][18][19] It is noticeable that the new thermal conductive composites should also possess low permittivity and loss and excellent flame retardancy; however, many previous works [20][21][22][23] focused on their thermal conductivity and dielectric properties but rarely consider flame retardancy.…”

Section: Introductionmentioning

confidence: 99%

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Synergetic effect of thermal conductivity and flame retardancy of cyanate ester composites containing DOPO and BN with great dielectric properties

Yao

Wang

Chen

et al. 2019

Polymers for Advanced Techs

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DOPO and boron nitride (BN) fillers with different particle sizes and several loadings were employed to improve the properties of cyanate ester (CE) resin. The effects of BN content and particle size on the thermal conductivity of the BN‐DOPO/CE ternary composites were discussed. The influence of enhancing the thermal conductivity of the ternary composites on their flame retardancy was studied. The consequences showed that increasing the thermal conductivity of BN‐DOPO/CE composites had an active impact on their flame retardancy. Approving flame retardancy of the ternary composites was certified by the high limiting oxygen index (LOI), UL‐94 rating of V‐0, and low heat release rate (HRR) and total heat release (THR). For instance, in contrast with pure CE matrix, peak of HRR (pk‐HRR), average of HRR (av‐HRR), THR, and average of effective heat of combustion (av‐EHC) of CEP/BN0.5 μm/10 composite were decreased by 51.7%, 33.8%, 18.7%, and 18.9%, respectively. Thermal gravimetry analysis (TGA) showed that the addition of BN fillers improves the thermal stability of the composites. Moreover, the ternary composites possess good dielectric properties. Their dielectric constants (ε) are less than 3, and dielectric loss tangent (tgδ) values are lower than neat CE resin.

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Section: Loi and Ul-94 Rating Testsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synergetic effect of thermal conductivity and flame retardancy of cyanate ester composites containing DOPO and BN with great dielectric properties

Yao

Wang

Chen

et al. 2019

Polymers for Advanced Techs

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“…Lei, Y. [ 24 ] conducted research on the thermal conductivity of h-BN filled epoxy/cyanate resin composites. According to Agari’s model [ 25 ], the obtained data revealed that it is hard for h-BN to form effective conductivity channels.…”

Section: Introductionmentioning

confidence: 99%

Achieving a 3D Thermally Conductive while Electrically Insulating Network in Polybenzoxazine with a Novel Hybrid Filler Composed of Boron Nitride and Carbon Nanotubes

Wang

Drummer

et al. 2020

Polymers

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To solve the problem of excessive heat accumulation in the electronic packaging field, a novel series of hybrid filler (BN@CNT) with a hierarchical “line-plane” structure was assembled via a condensation reaction between functional boron nitride(f-BN) and acid treated carbon nanotubes (a-CNTs). The reactions with different mass ratios of BN and CNTs and the effect of the obtained hybrid filler on the composites’ thermal conductivity were studied. According to the results, BN@15CNT exhibited better effects on promoting thermal conductivity of polybenzoxazine(PBz) composites which were prepared via ball milling and hot compression. The thermally conductive coefficient value of PBz composites, which were loaded with 25 wt% of BN@15CNT hybrid fillers, reached 0.794 W· m−1· K−1. The coefficient value was improved to 0.865 W· m−1· K−1 with 15 wt% of BN@15CNT and 10 wt% of BN. Although CNTs were adopted, the PBz composites maintained insulation. Dielectric properties and thermal stability of the composites were also studied. In addition, different thermal conduction models were used to manifest the mechanism of BN@CNT hybrid fillers in enhancing thermal conductivity of PBz composites.

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“…Thus, the ability of fillers to form conductivity channels and networks as well as contact and overlap of fillers determined by the content of fillers, directly affects the thermal conductivity of the resulting composites [2,3,5,6,10]. In our previous work, epoxy/cyanate resin composites with various contents of h-BN were prepared and the results indicated that on increasing the content of h-BN, the thermal conductivity of the composites increased [28]. According to Agari’s model, with h-BN in the matrix it is hard to form effective conductivity channels [9].…”

Section: Introductionmentioning

confidence: 99%

Synergistic Effects of Functional CNTs and h-BN on Enhanced Thermal Conductivity of Epoxy/Cyanate Matrix Composites

Lei

Ren

et al. 2018

Nanomaterials

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Epoxy/cyanate resin matrix composites (AG80/CE) with improved thermal conductivity and mechanical properties were obtained with synergetic enhancement with functional carbon nanotubes (f-CNTs) and hexagonal boron nitride (h-BN). AG80/CE performed as polymeric matrix and h-BN as conductivity filler which formed the main thermal conductivity channels. Small amounts of f-CNTs were introduced to repair defects in conductivity channels and networks. To confirm the synergetic enhancements, the thermal conductivity was investigated and analyzed with Agari’s model. Results indicated that with introduction of 0.5 wt% f-CNTs, the thermal conductivity coefficient (ƛ) increased to 0.745 W/mk, which is 1.38 times that of composites with just h-BN. Furthermore, the flexural strength and modulus of composites with 0.5 wt% f-CNTs were 85 MPa and 3.5 GPa. The glass transition temperature (Tg) of composites with 0.4 wt% was 285 °C and the initial decomposition temperature (T5%) was 385 °C, indicating outstanding thermal stability. The obtained h-BN/f-CNTs reinforced AG80/CE composites present great potential for packaging continuous integration and miniaturization of microelectronic devices.

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Design of h-BN-Filled Cyanate/Epoxy Thermal Conductive Composite with Stable Dielectric Properties

Cited by 30 publications

References 19 publications

Synergetic effect of thermal conductivity and flame retardancy of cyanate ester composites containing DOPO and BN with great dielectric properties

Synergetic effect of thermal conductivity and flame retardancy of cyanate ester composites containing DOPO and BN with great dielectric properties

Achieving a 3D Thermally Conductive while Electrically Insulating Network in Polybenzoxazine with a Novel Hybrid Filler Composed of Boron Nitride and Carbon Nanotubes

Synergistic Effects of Functional CNTs and h-BN on Enhanced Thermal Conductivity of Epoxy/Cyanate Matrix Composites

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