材料科学
硅橡胶
复合数
复合材料
质量分数
热导率
氮化硼
煅烧
硅酮
制作
生物化学
医学
病理
催化作用
化学
替代医学
作者
Kunpeng Ruan,Han Yan,Sijie Zhang,Xuetao Shi,Yongqiang Guo,Junwei Gu
标识
DOI:10.1016/j.compscitech.2021.108799
摘要
With the method of precipitation followed by high temperature calcination, hetero-structured fillers boron nitride [email protected] ([email protected]2O3) were in-situ fabricated. Thereafter, thermally conductive & insulating [email protected]2O3/silicone rubber (SR) composite films were then prepared. The “point-surface” hetero-structured fillers [email protected]2O3 had more significant thermal conductivity coefficient (λ) improvement than single Al2O3, BNNS and directly blending BNNS/Al2O3 fillers. With the mass fraction of [email protected]2O3 to be 30 wt% (BNNS/Al2O3, 1:1, wt:wt), the in-plane λ (λ∥) and through-plane λ (λ⊥) of the [email protected]2O3/SR composite films attained 2.78 W/mK and 0.84 W/mK, 1.75 times higher than λ∥ (1.01 W/mK) and 3.0 times higher than λ⊥ (0.21 W/mK) of pure SR, also more excellent than BNNS/SR (λ∥ = 2.46 W/mK, λ⊥ = 0.76 W/mK), Al2O3/SR (λ∥ = 1.58 W/mK, λ⊥ = 0.50 W/mK) and directly blending (BNNS/Al2O3)/SR (λ∥ = 2.04 W/mK, λ⊥ = 0.62 W/mK) composite films under the same mass fraction of fillers. Also, [email protected]2O3/SR composite films presented wonderful mechanical, insulation as well as thermal properties.
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