{"title":"疏水纳米二氧化硅改性石墨片的流动性及红外干扰性能","authors":"宁功韬, 栗苹, 崔玉玲, 李石川, 汤润泽, 周遵宁","doi":"10.11943/J.ISSN.1006-9941.2015.12.013","DOIUrl":null,"url":null,"abstract":"To research the dispersion properties and infrared (IR) interference efficiency of graphite flake particulates modified by hydrophobic nano-silica, the flowability of graphite flake particles before and after modification was measured by a powder property tester. The smoke was formed by dispersing the graphite flake particles into the smoke box using air flow dispersion way. The mass concentration and IR spectrum transmission of the smoke were measured. On the basis of stir settlement model, the settling velocity of smoke was calculated. Results show that the Carr′s flowability index of graphite flake particulates modified with hydrophobic nano-silica in mass ratio of 4.0 % is the highest, reaching 61 and at the same time, the settling velocity decreases from 2.288×10 -3 m·s -1 before modification to 1.125×10 -3 m·s -1 after modification. Average IR spectrum transmission of the smoke formed in the wave band range of 3-5 μm and 8-12 μm decreases from 0.3895 % and 0.7288% to 0.072% and 0.176%. The physical modification of hydrophobic nano-SiO 2 on graphite flake surface effectively improves the flowability and dispersion properties and significantly increases the duration of the smoke formed by graphite flake particles and IR interference performance.","PeriodicalId":35753,"journal":{"name":"Hanneng Cailiao/Chinese Journal of Energetic Materials","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2015-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Flowability and Infrared Interference Properties of Modified Graphite Flake with Hydrophobic Nano-silica\",\"authors\":\"宁功韬, 栗苹, 崔玉玲, 李石川, 汤润泽, 周遵宁\",\"doi\":\"10.11943/J.ISSN.1006-9941.2015.12.013\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"To research the dispersion properties and infrared (IR) interference efficiency of graphite flake particulates modified by hydrophobic nano-silica, the flowability of graphite flake particles before and after modification was measured by a powder property tester. The smoke was formed by dispersing the graphite flake particles into the smoke box using air flow dispersion way. The mass concentration and IR spectrum transmission of the smoke were measured. On the basis of stir settlement model, the settling velocity of smoke was calculated. Results show that the Carr′s flowability index of graphite flake particulates modified with hydrophobic nano-silica in mass ratio of 4.0 % is the highest, reaching 61 and at the same time, the settling velocity decreases from 2.288×10 -3 m·s -1 before modification to 1.125×10 -3 m·s -1 after modification. Average IR spectrum transmission of the smoke formed in the wave band range of 3-5 μm and 8-12 μm decreases from 0.3895 % and 0.7288% to 0.072% and 0.176%. The physical modification of hydrophobic nano-SiO 2 on graphite flake surface effectively improves the flowability and dispersion properties and significantly increases the duration of the smoke formed by graphite flake particles and IR interference performance.\",\"PeriodicalId\":35753,\"journal\":{\"name\":\"Hanneng Cailiao/Chinese Journal of Energetic Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2015-12-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Hanneng Cailiao/Chinese Journal of Energetic Materials\",\"FirstCategoryId\":\"1087\",\"ListUrlMain\":\"https://doi.org/10.11943/J.ISSN.1006-9941.2015.12.013\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"Engineering\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Hanneng Cailiao/Chinese Journal of Energetic Materials","FirstCategoryId":"1087","ListUrlMain":"https://doi.org/10.11943/J.ISSN.1006-9941.2015.12.013","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Engineering","Score":null,"Total":0}
Flowability and Infrared Interference Properties of Modified Graphite Flake with Hydrophobic Nano-silica
To research the dispersion properties and infrared (IR) interference efficiency of graphite flake particulates modified by hydrophobic nano-silica, the flowability of graphite flake particles before and after modification was measured by a powder property tester. The smoke was formed by dispersing the graphite flake particles into the smoke box using air flow dispersion way. The mass concentration and IR spectrum transmission of the smoke were measured. On the basis of stir settlement model, the settling velocity of smoke was calculated. Results show that the Carr′s flowability index of graphite flake particulates modified with hydrophobic nano-silica in mass ratio of 4.0 % is the highest, reaching 61 and at the same time, the settling velocity decreases from 2.288×10 -3 m·s -1 before modification to 1.125×10 -3 m·s -1 after modification. Average IR spectrum transmission of the smoke formed in the wave band range of 3-5 μm and 8-12 μm decreases from 0.3895 % and 0.7288% to 0.072% and 0.176%. The physical modification of hydrophobic nano-SiO 2 on graphite flake surface effectively improves the flowability and dispersion properties and significantly increases the duration of the smoke formed by graphite flake particles and IR interference performance.
期刊介绍:
Chinese Journal of Energetic Materials is a vital forum for the exchange of science and technology in energetic materials, and information on - Propellants - Explosives - Pyrotechnics - Ignition, combustion and detonation