2023年5月4日 · In this study, we report a method to fabricate BN/polyurethane (PU) composites using an improved nonsolvent-induced phase separation method with binary solvents to improve the thermal performance and flexibility of PU. The stress and strain of BN60/PU are 7.52 ± 0.87 MPa and 707.34 ± 38.34%, respectively.

摘要：六方氮化硼 (h-BN)具有优异的导热性能、绝缘性能和化学稳定性，是一种理想的导热填料，但与聚氨酯 (PU)共混时存在界面作用弱等问题，阻碍了其规模化应用。 基于此，本论文结合课题组前期研究的混合溶剂体系下非溶剂致相转法 (NIPS)利于优化填料粒子与聚氨酯间的界面作用，制备了柔性高导热氮化硼/聚氨酯 (h-BN/PU)复合材料，具体内容如下: (1)混合溶剂体系下h-BN/PU复合膜的研究。 以未改性的h-BN为导热填料，采用混合溶剂体系下NIPS法制备了h …

2024年11月1日 · Epoxy/BMN coating demonstrated superior anticorrosion performance, with a higher impedance of 5.54 × 10 6 Ω·cm 2 compared to pure EP coatings. Additionally, co-functionalization with polydopamine (PDA) and APTES further improved the dispersibility of BN in the epoxy matrix [28].

2024年12月1日 · The XRD pattern of UHMWPE@BN/PU exhibited characteristics consistent with PU, UHMWPE, and h-BN. Furthermore, the through-plane orientation (TPO) of h-BN was calculated from the intensity of I 002 and I 100 according to Eq.

In this study, we report a method to fabricate BN/polyurethane (PU) composites using an improved nonsolvent-induced phase separation method with binary solvents to improve the thermal performance and flexibility of PU. The stress and strain of BN60/PU are 7.52 0.87 MPa and 707.34 38.34%, respectively.

Developing flexible thermal management materials is quite urgent for emerging flexible electronics and wearable devices. Here, a novel strategy is used to prepare hydroxyl-functionalized boron...

图3-2A是氮化硼的XRD谱图，在26.70°处可以看到BN的强衍射峰。 由图3-2B可以看出，PU在15°—25°之间存在一个宽的馒头峰，是属于聚氨酯的衍射峰。 而在BN/PU复合材料中，同时存在26.70°处BN的衍射峰和PU的15°-25°之间的衍射峰，表明成功制备了聚氨酯/氮化硼复合材料。 用扫描电子显微镜（SEM）把BN/PU复合材料在200倍和50000倍下进行扫描。 可以看出，制备的BN/PU复合材料具有多孔的结构，孔洞直径约为200-300μm。 可以看出，聚氨酯中镶嵌着氮 …

2024年8月14日 · In the present work, we propose a novel strategy by employing boron nitride doped silver nanoparticles (BN-Ag) to improve the thermal conductivity of polyurethane composites. The BN-Ag composite was prepared by depositing silver nanoparticles (AgNPs) onto the surface of boron nitride (BN), facilitating cross-linking between adjacent BN sheets.

2023年5月4日 · In this study, they report a novel approach to fabricate large area, high-filler-loaded, flexible and insulating hBN/thermoplastic polyurethane (TPU) composite films via solution ball-milling of hBN and TPU. Flexible BN/PU composite films were successfully fabricated in …

2023年5月4日 · In this study, we report a method to fabricate BN/polyurethane (PU) composites using an improved nonsolvent-induced phase separation method with binary solvents to improve the thermal performance and flexibility of PU. The stress and strain of BN60/PU are 7.52 ± 0.87 MPa and 707.34 ± 38.34%, respectively.