Performance of Silicone Rubber Composites Filled with Aluminum Nitride and Alumina Tri-Hydrate

Zheng, Jianjun; He, Shaojian; Wang, Jiaqi; Fang, Wenxuan; Yang, Xue; Xie, Liming; Lin, Jun

doi:10.3390/ma13112489

Cited by 13 publications

(5 citation statements)

References 30 publications

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“…[5][6][7] Therefore, it is of great significance to develop thermal conductive rubber with better thermal conductivity. 8 To improve the thermal conductivity of rubber, researchers usually add fillers with high thermal conductivity to the rubber matrix, such as alumina Al 2 O 3 , 9,10 graphene oxide GO, 11,12 aluminum nitride AlN 13,14 and boron nitride BN, 15,16 etc. h-BN is a ceramicbased thermally conductive particle, also known as "white graphite" because its structure and physicochemical properties are similar to graphite.…”

Section: Introductionmentioning

confidence: 99%

Co-modified h-BN was used to improve the mechanical properties and thermal conductivity of natural rubber

Yang

et al. 2023

Journal of Elastomers & Plastics

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With the rapid development of electronic devices and rubber tires, the industry has put forward new requirements for the heat dissipation of rubber components. With excellent thermal conductivity, oxidation resistance, and thermal stability, hexagonal boron nitride (h-BN) is often added to plastics or rubber as a thermally conductive filler, but is less effective when used directly. In this study, h-BN-K was prepared by direct modification of the mixed solution of KH-550, and KH-570, while h-BN-PK was prepared by co-modification of dopamine, KH-550, and KH-570. Two modified h-BN were added to natural rubber (NR) to improve the vulcanization properties, mechanical properties, and thermal conductivity. It was found that the tensile strength and thermal conductivity of 20 wt% h-BN-PK/NR composites were 30.6 MPa and 0.335 W/mK, which were 39.1% and 110.7% higher compared to pure NR (22.0 MPa and 0.159 W/mK), respectively. In addition, the addition of h-BN improved the thermal stability performance of NR to some extent. In conclusion, the h-BN-PK/NR composites provide a certain reference for the use of thermally conductive NR and suggest new ideas for heat dissipation of electronic devices.

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Section: Introductionmentioning

confidence: 99%

Co-modified h-BN was used to improve the mechanical properties and thermal conductivity of natural rubber

Yang

et al. 2023

Journal of Elastomers & Plastics

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“…[11][12][13][14][15][16][17][18][19][20][21] Recently, a new type called low-temperature combination synthesis has been adopted, and the prepared AlN has a small and uniform particle size. [22][23][24][25][26] These experiments usually use Al(NO 3 ) 3 as the aluminum source, urea or citric acid as the fuel, and glucose as the carbon source to prepare AlN nanopowder through redox reaction. [27][28][29][30] However, the thermal decomposition process of urea is very complex, 31 and it cannot be completely decomposed before 750 • C. At the same time, it is easy to produce some white crystals during citric acid decomposition, which brings some difficulties to powder dispersion.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, a new type called low‐temperature combination synthesis has been adopted, and the prepared AlN has a small and uniform particle size 22–26 . These experiments usually use Al(NO 3 ) 3 as the aluminum source, urea or citric acid as the fuel, and glucose as the carbon source to prepare AlN nanopowder through redox reaction 27–30 .…”

Section: Introductionmentioning

confidence: 99%

Preparation of nano‐AlN powder by sol–gel foaming and its sintering properties

Wang

et al. 2023

Int J Applied Ceramic Tech

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Uniformly dispersed nano‐sized aluminum nitride powders were prepared by the sol–gel foaming method using aluminum nitrate as the aluminum source, sucrose as the carbon source, and ammonium chloride as the foaming agent. The effects of ammonium chloride content on the particle size and the sintering properties of aluminum nitride were investigated. The results showed that when the molar ratio of ammonium chloride to aluminum nitrate was .5, the colloidal foams were uniform, large, and fluffy, and amorphous alumina precursors with uniform particles could be prepared. Aluminum nitride powder with a particle size of 22–27 nm can be obtained by calcining these precursors in nitrogen atmosphere at 1400°C for 2 h. At the same time, aluminum nitride bulk material with a relative density of 95% can be obtained by sintering the compact samples in nitrogen atmosphere at 1700°C for 2 h.

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“…Aluminium nitride finds application in optoelectronic devices, surface acoustic wave sensors (SAW) and microelectronic industries as thermal conducting barriers and as electrically insulating elements. AlN nanoparticles are one of the most promising additives in dielectric characterization and are widely used with polymer nanocomposites [10][11][12]. Choi et al worked on AlN based mineral oil achieved a 20% enhancement in heat transfer coefficient with nanofluids [13].…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Electrical and Rheological Properties of AlN-Based Synthetic Ester Nanofluids

et al. 2022

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The present study deals with the characterization of electrical and rheological behaviour of the Synthetic ester fluid incorporated with various concentration of Aluminium nitride (AlN) nanoparticles. Zeta potential measurement has shown an excellent stability of the ester fluid mixed with the nanoparticle. Corona inception voltage (CIV) measured using ultra-high frequency (UHF) technique and the results confirmed higher discharge resistance for nanofluid dispersed with 0.005% of AlN. Phase resolved partial discharge (PRPD) analysis with higher harmonic voltages has shown increase in pulse magnitude and number of discharges. Dielectric constant and tan 𝛿 measurements have revealed a slight marginal increase in its value with the inclusion of filler. Streaming current magnitude was found to increase with the disc rotational speed, concentration of nanoparticle and ambient temperature. Fluorescence spectroscopy analysis has shown increase in fluorophores intensity with filler dispersion in the ester fluid. Rheological properties of fluids mixed with nanoparticles are inspected with cone plane geometry configuration. Synthetic ester and its nanofluid exhibited Newtonian behavior of flow pattern and are independent of the applied shear rate. An exponential decay of viscosity of nanofluids was observed with temperature and it follows an Arrhenius law. The calculated activation energy has increased with the incorporation of filler concentrations. The complex modulus of AlN nanofluids was observed alongside exhibiting the viscous behavior where the loss modulus G'' is much larger than the storage modulus G', with the applied frequency.

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Performance of Silicone Rubber Composites Filled with Aluminum Nitride and Alumina Tri-Hydrate

Cited by 13 publications

References 30 publications

Co-modified h-BN was used to improve the mechanical properties and thermal conductivity of natural rubber

Co-modified h-BN was used to improve the mechanical properties and thermal conductivity of natural rubber

Preparation of nano‐AlN powder by sol–gel foaming and its sintering properties

Investigation on the Electrical and Rheological Properties of AlN-Based Synthetic Ester Nanofluids

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