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李安 等:氮化硼基导热/阻燃水性涂料的制备


                                                               项目      C  N   O   B
                                                               w/%    28. 29 25. 97 23. 63 22. 11



                               20 μm                   20 μm                                          20 μm
                                                                      能量/keV

                     (a)—空白样                      (b)—2. 0%MBC的SEM和EDS                      (c)—2. 0%BC
                                                图5 涂层  后 层的 SEM和EDS
                                                Fig. 5  SEM and EDS of charring layer
             MF@BNNS 的涂层相比,加入 BNNS 的涂层燃烧后无                      [ 3 ] 杨庆浩,黄天 ,杨林涛,等 . 显示器件用导热聚酯涂料
             法形成块状的残炭,呈现碎片化的炭渣。这是因为                                  的研究[J]. 涂料工业,2013,43(6):8-11.

             直接添加 BNNS,容易造成其在涂料中团聚,燃烧时                               YANG  Q  H,HUANG  T  Z,YANG  L  T,et  al. A  study  of
                                                                     thermal conductivity polyester coatings for display device[J].
             团聚的地方能发生阻燃作用形成固体颗粒,而其他
                                                                     Paint & Coatings Industry,2013,43(6):8-11.
             区域则会被烧  尽,故而整个涂层面无法形成块
                                                                [ 4 ] YUAN W C,LI W Z,ZHU S B,t al. 3D-network of hybrid
                                                                                            e
             状的炭渣。胶状物的生成可能是由于 MF 对 BNNS 的
                                                                     epoxy-boron  nitride  microspheres  leading  to  epoxy
             包埋作用形成了阻隔热量和烟雾释放的双阻隔层,
                                                                     composites  of  high  thermal  conductivity[J]. Journal  of
             发挥了 MF 和 BNNS 的协同阻燃作用,进而抑制了可                            Materials Science,2022,57(25):11698-11713.
             燃气体的挥发和热量的 延扩散 ,达到阻燃的                              [ 5 ] YANG  F  H,SUN  X  P,GUO  Q  Y,et  al. Improvement  of
             目的 。                                                    thermal conductivities for epoxy composites via incorporating
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                                                                     poly(vinyl benzal)-coated h-BN fillers and solvent-assisted
             3   结 语                                                 dispersion[J].  Industrial   &   Engineering   Chemistry
                                                                     Research,2019,58(40):18635-18643.
                 通过三聚氰胺-甲醛(MF)树脂对氮化硼纳米片                         [ 6 ] WANG  D,MU  X  W,CAI  W,et  al. Constructing
            (BNNS)进行表面改性修饰,合成了兼具高效导热和                                phosphorus,nitrogen,silicon-co-contained  boron  nitride
             阻燃双重功能的纳米填料,将其作为功能材料加入                                  nanosheets  to  reinforce  flame  retardant  properties  of
             到涂料中可以有效提升涂层的导热和阻燃性能。                                   unsaturated  polyester  resin[J]. Composites  Part  A-Applied
                                                                     Science and Manufacturing,2018,109:546-554.
             BNNS 和 MF@BNNS 均具有纳米尺度,且呈现原片状
                                                                [ 7 ] WANG Z D,PRIEGO P,MEZIANI M J,t al. Dispersion of
                                                                                                  e
             形貌。涂料中添加 MF@BNNS 后,涂层的导热性能显
                                                                     high-quality  boron  nitride  nanosheets  in  polyethylene  for
             著提高。与 BNNS 纳米片相比,MF@BNNS 通过促进
                                                                     nanocomposites of superior thermal transport properties[J].
             炭层的形成,以隔绝可燃物和热量及烟雾的释放,具                                 Nanoscale Advances,2020,2(6):2507-2513.
             有更好的阻燃和抑烟功能,涂层的各项热释放和烟                             [ 8 ] YAN Q W,DAI W,GAO J Y,et al. Ultrahigh-aspect-ratio
             雾释放指标均显著降低,展现出优异的阻燃抑烟                                   boron  nitride  nanosheets  leading  to  superhigh  in-plane
             性能。                                                     thermal  conductivity  of  foldable  heat  spreader[J]. ACS
                                                                     Nano,2021,15(4):6489-6498.
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                                                                     incorporating  poly(vinyl  benzal)-coated  h-BN  fillers  and
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                                                                收稿日期       2024-10-09(修改稿)
                 35-41.
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