Enhancing thermal conductivity of silicone rubber via constructing hybrid spherical boron nitride thermal network

2021 ◽  
pp. 51943
Author(s):  
Xuejun Zhou ◽  
Jiyou Zong ◽  
Jun Lei ◽  
Zhongming Li
Keyword(s):  
Thermal Conductivity ◽  
Boron Nitride ◽  
Silicone Rubber ◽  
Thermal Network

Cold plasma modification of boron nitride fillers and its effect on the thermal conductivity of silicone rubber/boron nitride composites

2012 ◽  
Vol 33 (9) ◽  
pp. 1473-1481 ◽  
Author(s):  
Tuo Ji ◽  
Li-Qun Zhang ◽  
Wen-Cai Wang ◽  
Yu Liu ◽  
Xiao-Feng Zhang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Boron Nitride ◽  
Silicone Rubber ◽  
Cold Plasma ◽  
Plasma Modification

scholarly journals Research on the thermal conductivity and dielectric properties of AlN and BN co-filled addition-cure liquid silicone rubber composites

RSC Advances ◽  
2019 ◽  
Vol 9 (49) ◽  
pp. 28851-28856 ◽  
Author(s):  
Zhenzhen Ou ◽  
Feng Gao ◽  
Huaijun Zhao ◽  
Shumeng Dang ◽  
Lingjian Zhu
Keyword(s):  
Thermal Conductivity ◽  
Dielectric Properties ◽  
Boron Nitride ◽  
Aluminum Nitride ◽  
Silicone Rubber ◽  
Conductive Filler ◽  
Matrix Composites ◽  
Rubber Composites ◽  
Liquid Silicone Rubber ◽  
Liquid Silicone

The present work aims at studying the thermal and dielectric properties of addition-cure liquid silicone rubber (ALSR) matrix composites using boron nitride (BN) and aluminum nitride (AlN) as a hybrid thermal conductive filler.

scholarly journals Hypergravity-Induced Accumulation: A New, Efficient, and Simple Strategy to Improve the Thermal Conductivity of Boron Nitride Filled Polymer Composites

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 459
Author(s):  
Kangkang Yu ◽  
Tao Yuan ◽  
Songdi Zhang ◽  
Chenlu Bao
Keyword(s):  
Thermal Conductivity ◽  
Boron Nitride ◽  
Polymer Composites ◽  
Silicone Rubber ◽  
Raw Material ◽  
Rubber Composites ◽  
Advantages And Disadvantages ◽  
Simple Strategy ◽  
Relative Gravity ◽  
Gravity Acceleration

Thermal conductive polymer composites (filled type) consisting of thermal conductive fillers and a polymer matrix have been widely used in a range of areas. More than 10 strategies have been developed to improve the thermal conductivity of polymer composites. Here we report a new “hypergravity accumulation” strategy. Raw material mixtures of boron nitride/silicone rubber composites were treated in hypergravity fields (800–20,000 g, relative gravity acceleration) before heat-curing. A series of comparison studies were made. It was found that hypergravity treatments could efficiently improve the microstructures and thermal conductivity of the composites. When the hypergravity was about 20,000 g (relative gravity acceleration), the obtained spherical boron nitride/silicone rubber composites had highly compacted microstructures and high and isotropic thermal conductivity. The highest thermal conductivity reached 4.0 W/mK. Thermal interface application study showed that the composites could help to decrease the temperature on a light-emitting diode (LED) chip by 5 °C. The mechanism of the improved microstructure increased thermal conductivity, and the high viscosity problem in the preparation of boron nitride/silicone rubber composites, and the advantages and disadvantages of the hypergravity accumulation strategy, were discussed. Overall, this work has provided a new, efficient, and simple strategy to improve the thermal conductivity of boron nitride/silicone rubber and other polymer composites (filled type).

High Thermal Conductivity Polymer Insulation

2017 ◽  
pp. 264-315
Keyword(s):  
Thermal Conductivity ◽  
Weight Loss ◽  
Boron Nitride ◽  
Silicone Rubber ◽  
Dielectric Breakdown ◽  
High Thermal Conductivity ◽  
Thermal Dissipation ◽  
Time To Failure ◽  
Erosion Depth ◽  
The Relationship

In this chapter, a range of silicone rubber (SiR), polypropylene (PP) and polyethylene (PE) based composites filled with micro or nano sized boron nitride (BN) particles at different loadings were manufactured to investigate effects of thermal conductivity. The study of SiR attempts to clarify whether the addition of boron nitride (BN) particles can improve the resistance to tracking and erosion of SiR by increasing its thermal conductivity. For PP, in addition to measuring thermal conductivity of various samples, thermal dissipation was also discussed to analyze the relationship between them. Meanwhile, in order to evaluate tracking failure (a kind of surface dielectric breakdown) resistance of the manufactured samples, time to failure, erosion depth and weight loss of the test samples were measured through tracking test. As for PE, Thermal conductivity and relative permittivity were measured to characterize the basic properties of various samples. Obtained results show that several properties of the filled specimens are obviously improved.

scholarly journals Improvement in thermal conductivity of through-plane aligned boron nitride/silicone rubber composites

2019 ◽  
Vol 165 ◽  
pp. 107580 ◽  
Author(s):  
Yang Xue ◽  
Xiaofei Li ◽  
Haosheng Wang ◽  
Feng Zhao ◽  
Donghai Zhang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Boron Nitride ◽  
Silicone Rubber ◽  
Rubber Composites

scholarly journals Preparation of Boron Nitride and Silicone Rubber Composite Material for Application in Lithium Batteries

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 999
Author(s):  
Yafang Zhang ◽  
Juhua Huang ◽  
Ming Cao ◽  
Guoping Du ◽  
Ziqiang Liu ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Composite Material ◽  
Boron Nitride ◽  
Silicone Rubber ◽  
Hexagonal Boron Nitride ◽  
Element Model ◽  
Thermal Interface Material ◽  
Thermal Interface ◽  
Mechanical Stirring ◽  
Battery Thermal Management System

Hexagonal boron nitride and silicone rubber (h-BN/SR) composites were prepared by the mechanical stirring method, and their crystal morphology, chemical structure, thermal properties, and compression stress–strain performance were investigated. The experimental results suggest that silicone rubber combined with h-BN exhibits better thermal conductivity and mechanical properties. When the proportion of h-BN is 30 wt%, the thermal conductivity of the h-BN/SR composite material is 0.58 W/m∙K, which is 3.4 times that of pure silicone rubber. At the same time, the compressive strength of h-BN/SR is 4.27 MPa, which is 6.7 times that of pure silicone rubber. Furthermore, the finite element model was employed to numerically analyze the thermal behavior of a battery with a h-BN/SR composite as the thermal interface material. The analytical results show that the highest temperature of the battery decreased when using h-BN/SR as the thermal interface material in the battery thermal management system. The h-BN/SR composite can thus effectively improve the safety properties of batteries.

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