Morphology control of hexagonal boron nitride by a silane coupling agent

Study on thermal conductive BN/novolac resin composites

“…BN particles absorb hydrophilic groups (-NH 2 ) when KH550 is added into the system. There are three hydrophobic groups (-OC 2 H 5 ) in the KH550 molecule, which make the steric between the molecules increase [20]. Fig.…”

“…Previous studies have shows that the change in BN surface from partial ionic to hydrophobic surface led to an increase in BN/epoxy composite thermal conductivity [11]. A coupling agent was also used to form covalent bonds between the organic and inorganic phases, promoting the miscibility of hybrid ceramics [18][19][20][21]. In this study, ␥-aminopropyltriethoxysilane (KH550) was used as the surface treatment agent to increase the BN surface chain length and to make the BN particles more organophilic and connect well with the novolac resin in order to ensure good dispersion and to improve the interface between the filler and the matrix [11].…”

“…Then 2 g KH550 was added into 200 ml 90% ethanol, and 20 g BN particles were then added into the mixture. The treated BN particles were then dried at 70 • C for 24 h after agitating for 4 h under 60 • C and washing with distilled water several times[20].…”

Enhanced Breakdown Strength and Thermal Conductivity of BN/EP Nanocomposites with Bipolar Nanosecond Pulse DBD Plasma Modified BNNSs

“…The mass ratio of SCA, ethanol and pure water is 1:144:16. The amount of SCA is estimated by the following formula [27]:m0=m.s/s0, where m 0 is the amount of SCA, m is the mass of the nanoparticles, s is the specific surface area of the nanoparticles (34.318 m 2 ·g −1 ), s 0 is the minimum coating area of SCA (322 m 2 ·g −1 ). In general, the actual amount is less than the calculated amount.…”

Graphene and biomass-based carbocatalysts as high-performance peroxymonosulfate activator for the removal of recalcitrant pollutants in water

“…EDX elemental mappings of 1sNBG800 (Figure As shown in Figure 4.9(a), the XRD pattern of 1sNBG800 is similar to that of 2sNBG800 (2 = 26.3°, 0.330 nm) with a strong peak at 2 = 26.8° (0.324 nm), which cannot exclude the existence of h-BN in 1sNBG800. This is because the (002) orientation of h-BN nanosheets corresponds to the characteristic peak at 2 = 26.8° (Bhimanapati et al 2014, Ma et al 2011) and the crystalline h-BN is less likely to form at 800°C . As shown in Figure 4.9(b) and Table 4.1(a), 1sNBG800 exhibited the highest ID/IG ratio (1.12) among all the carbocatalysts in this study with a wider D band, which indicates the formation of h-BN (Zheng et al 2013).…”