一种改性氮化硼、含其的复合材料、其制备方法及应用

    公开(公告)号:WO2023274068A1

    公开(公告)日:2023-01-05

    申请号:PCT/CN2022/101120

    申请日:2022-06-24

    Abstract: 本发明公开了一种改性氮化硼、含其的复合材料、其制备方法及应用。本发明具体公开了一种改性氮化硼的制备方法,包括:S1.氧化的多巴胺生成聚多巴胺黏附在氮化硼表面;S2.将改性的氮化硼溴化;S3.基于ARGET ATRP的聚合方法在溴化的氮化硼表面修饰聚甲基丙烯酸缩水甘油酯,并且在聚甲基丙烯酸缩水甘油酯上面修饰阻燃剂DOPO。本发明在氮化硼表面修饰了长链"枝状"DOPO阻燃剂,由于聚多巴胺强大的黏附能力,所以氮化硼表面修饰的长链阻燃剂非常稳定。另外,氮化硼表面修饰的长链阻燃剂能极大提高其与环氧树脂基体的相容性。本发明中基于阻燃改性氮化硼制备的环氧树脂复合材料与未改性的氮化硼相比,阻燃、力学和导热性能都有极大的提升。

    POLYCARBONATE COMPOSITIONS WITH THIN WALL FLAME RETARDANT PROPERTIES AND SHAPED ARTICLE THEREFORE

    公开(公告)号:WO2021260621A1

    公开(公告)日:2021-12-30

    申请号:PCT/IB2021/055615

    申请日:2021-06-24

    Abstract: Disclosed herein are compositions comprising from about 26 wt. % to about 89 wt. % of a polycarbonate polymer component, from about 0.5 wt. % to about 20 wt. % of phosphazene-based flame retardant, from about 0.01 wt. % to about 4 wt. % of a siloxane component, and from about 10 wt. % to about 50 wt. % of a filler component, wherein all weight percent are based on the total weight of the composition. The composition may exhibit a notched Izod impact strength of at least 150 J/m when tested in accordance with ASTM D256 at 23 °C and 5ft-lb on a 3.2 mm bar specimen, a tensile elongation less than or equal to 2% when tested in accordance with D638 at 5 mm/min at break on a Type I bar specimen, and the composition achieves a p(FTP) of at least 0.85 for normal V0 of at 1.2 mm according to UL 94 (2019).

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