石墨烯复合微粒喷射成形分散效果研究
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摘要
将喷射技术应用于石墨烯复合微粒分散成形,对比研究了喷嘴结构、喷射距离、直射与旋流压力比等对石墨烯复合微粒分散范围及分散均匀性的影响。研究表明,复合微粒分散范围受喷嘴出口结构影响较小,且随着喷射距离减小而减小。当喷射距离为2mm,复合微粒溅射系数为0.65左右;与Ⅱ型喷嘴相比,采取Ⅰ型喷嘴喷射所获得的复合微粒集中区相对较小。在控制复合微粒分散均匀性方面,压力比对Ⅰ型喷嘴的分散均匀性影响不明显,而对Ⅱ型喷嘴的分散均匀性影响较大,且当压力比为0.4时,采用Ⅱ型喷嘴可获得最佳分散效果。
The spray technique was applied to the dispersion forming of graphene composite particles.The effects of nozzle structure,jet distance,direct and swirl pressure ratio on the dispersion range and dispersion uniformity of graphene composite particles were investigated.The results show that the dispersion range of composite particles is slihtly affected by the nozzle outlet structure and decreased with the decrease of the injection distance.When the injection distance is 2mm,the composite particle sputtering coefficient is about 0.65.Compared with theⅡtype nozzle,the composite particle concentration zone obtained by theⅠtype nozzle injection is relatively small.In controlling the dispersion uniformity of composite particles,the pressure ratio has no obvious influence on the dispersion uniformity of theⅠ-type nozzle,while it has a great influence on the dispersion uniformity of theⅡtype nozzle.When the pressure ratio is 0.4,theⅡtype nozzle can obtain the desirable dispersion effect.
The spray technique was applied to the dispersion forming of graphene composite particles.The effects of nozzle structure,jet distance,direct and swirl pressure ratio on the dispersion range and dispersion uniformity of graphene composite particles were investigated.The results show that the dispersion range of composite particles is slihtly affected by the nozzle outlet structure and decreased with the decrease of the injection distance.When the injection distance is 2mm,the composite particle sputtering coefficient is about 0.65.Compared with theⅡtype nozzle,the composite particle concentration zone obtained by theⅠtype nozzle injection is relatively small.In controlling the dispersion uniformity of composite particles,the pressure ratio has no obvious influence on the dispersion uniformity of theⅠ-type nozzle,while it has a great influence on the dispersion uniformity of theⅡtype nozzle.When the pressure ratio is 0.4,theⅡtype nozzle can obtain the desirable dispersion effect.
引文
[1]匡达,胡文彬.石墨烯复合材料的研究进展[J].无机材料学报,2013,28(3):235-246.
[2]任芳,朱光明,任鹏刚,等.纳米石墨烯复合材料的制备及应用研究进展[J].复合材料学报,2014,31(2):263-272.
[3]高源,陈国华.聚合物/石墨烯复合材料制备研究新进展及其产业化现状[J].高分子学报,2014(10):1 314-1 327.
[4]吴海华,王道,郭辉.喷管结构对纳米石墨片喷射速度及汇集特性影响[J].机械设计与制造,2017(9):113-116.
[5]吴海华,郭辉,熊盼.纳米石墨片微粉喷射成型工艺数值模拟[J].制造技术与机床,2016(1):121-126.
[6]顾军民,张斌.固体颗粒喷射分布器的冷模试验[J].化学反应工程与工艺,2013,29(6):502-509.
[7]白跃华,李秀芝,李凭力,等.喷射式分布器的冷模试验[J].石油炼制与化工,2005,36(1):39-43.
[2]任芳,朱光明,任鹏刚,等.纳米石墨烯复合材料的制备及应用研究进展[J].复合材料学报,2014,31(2):263-272.
[3]高源,陈国华.聚合物/石墨烯复合材料制备研究新进展及其产业化现状[J].高分子学报,2014(10):1 314-1 327.
[4]吴海华,王道,郭辉.喷管结构对纳米石墨片喷射速度及汇集特性影响[J].机械设计与制造,2017(9):113-116.
[5]吴海华,郭辉,熊盼.纳米石墨片微粉喷射成型工艺数值模拟[J].制造技术与机床,2016(1):121-126.
[6]顾军民,张斌.固体颗粒喷射分布器的冷模试验[J].化学反应工程与工艺,2013,29(6):502-509.
[7]白跃华,李秀芝,李凭力,等.喷射式分布器的冷模试验[J].石油炼制与化工,2005,36(1):39-43.