以聚磷酸铵(APP)为芯材、聚酰亚胺(PI)为囊材,通过低温喷雾干燥法制备微胶囊化改性APP阻燃剂。扫描电镜和红外光谱分析表明,改性后的APP分散性得到改善,并且PI较好地包覆在APP表面。将改性APP按照一定比例加入到PP树脂中制得薄膜,结果表明,改性APP的添加有提改善了薄膜的阻燃性能,极限氧指数比空白组最高提升了42.2%,UL-94达到V-0级,且热释放速率明显减缓,残炭量显著提升。此外,薄膜的机械性能、微观结构均未发生较大改变,可适用于物品的阻燃包装。
Microencapsulated modified APP flame retardants were prepared by low temperature spray drying method using ammonium polyphosphate (APP) as core and polyimide (PI) as the material.Scanning electron microscopy and infrared spectrum analysis showed that the APP dispersion was improved and PI was well coated on the surface of APP.The modified app was added into PP resin in a certain proportion to prepare a film.The results revealed that the addition of modified app improved the flame-retardant performance of the film,the limiting oxygen index increased by 42.2% compared with the blank group,UL-94 reached V-0,the heat release rate slowed down significantly,and the amount of residual carbon increased significantly.In addition,the mechanical properties and microstructure of the film did not changed greatly,so it could be used for flame retardant packaging of articles.
[1] 王娜,王树伟,陈俊声,等.苯甲酸功能化石墨烯-Al(OH)3协同阻燃聚丙烯[J].复合材料学报,2018,35(9):2434-2441.
[2] 张帅,陈建钧.超声协助蒙脱土分散于聚磷酸铵阻燃聚丙烯的研究[J].无机盐工业,2020,52(12):46-49,54.
[3] 王楠,宋艳,李锦春,等.含磷木质素基成炭剂的合成及在阻燃聚丙烯中的应用[J].高分子材料科学与工程,2018,34(4):7-13.
[4] 周吓星,袁峰,王嘉辉,等.APP/ADP对竹粉/聚丙烯复合材料的协效阻燃试验[J].林业工程学报,2020,5(6):36-42.
[5] Zhao W J,Zhang Z J.Flame retardant treatments for polypropylene:strategies and recent advances[J].Composites Part A:Applied Science and Manufacturing,2021,145:106382.
[6] 王洪志,焦传梅.硅烷偶联剂改性聚磷酸铵的制备及其阻燃热塑性聚氨酯弹性体的性能研究[J].青岛科技大学学报(自然科学版),2018,39(5):85-93.
[7] Wu K,Guo W H.Flame retardant efficiency of modified para-aramid fiber synergizing with ammonium polyphosphate on PP/EPDM[J].Polymer Degradation and Stability,2020,172(5):109065-109065.
[8] 胡晋,陈小随,彭凡畅,等.超支化聚磷酰胺膨胀型阻燃剂的制备及其协同聚磷酸铵对聚丙烯的阻燃性能研究[J].中国塑料,2020,34(2):16-22.
[9] 杨亚东,姜浩浩,张冰,等.基于微胶囊化聚磷酸铵和微胶囊化膨胀石墨的阻燃硬质聚氨酯泡沫复合材料的制备及性能[J].复合材料学报,2021,38(5):1387-1397.
[10] Liu Y,Gao W Q.Preparation of ammonium polyphosphate and dye co-intercalated LDH/polypropylene composites with enhanced flame retardant and UV resistance properties[J].Chemosphere,2021,277(5):130370-130370.
[11] 解明.改性聚磷酸铵用于阻燃聚丙烯复合材料的研究[D].大庆:东北石油大学,2013.
[12] 王娜,王升,张静,等.改性微胶囊化聚磷酸铵阻燃天然橡胶[J].精细化工,2017,34(4):451-455,462.
[13] Zhang X G,Hua J S.Enhance the interaction between ammonium polyphosphate and epoxy resin matrix through hydrophobic modification with cationic latex[J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,2021,610(5):125917-125934.
[14] 张冬桥.表面改性法制备多功能阻燃复合材料的研究[D].广州:华南理工大学,2018.
[15] 郝建薇,刘国胜,杜建新,等.聚磷酸铵表面处理及阻燃聚丙烯应用研究[J].北京理工大学学报,2009,29(6):556-559.
[16] 秦兆鲁,李定华,杨荣杰.钛酸酯偶联剂改性聚磷酸铵及其在阻燃聚丙烯中的应用[J].高分子材料科学与工程,2015,31(12):84-91.
[17] 蒋文斌.聚磷酸铵的双层微胶囊化及阻燃聚丙烯[D].上海:华东理工大学,2016.
[18] 陆弘毅,张隐,张帅,等.PEI/APP改性脲醛树脂制备阻燃胶合板及性能[J].林业工程学报,2021,6(1):44-49.
[19] 王东辉,刘全义,李泽锟.聚醚酰亚胺的热分解行为研究[J].塑料工业,2020,48(11):111-114+34.
[20] Liu Y,Fan L,Xu X Z,et al.Melt fluidity and thermal property of thermosetting siloxane-containing polyimide resins and their organic/inorganic hybrid characteristics[J].Materials Today Communications,2020,25(5):101443-101460.
[21] 国家质量监督检验检疫总局,国家标准化管理委员会.GB/T 1040.3—2006塑料拉伸性能的测定[S].北京:中国标准出版社,2017:1-3.
[22] 国家质量技术监督局.GB/T 1038—2000塑料薄膜和薄片气体透过性试验方法/压差法[S].北京:中国标准出版社,2000.
[23] He W T,Wang H.Flame retardant polymeric nanocomposites through the combination of nanomaterials and conventional flame retardants[J].Progress in Materials Science,2020,114:100687.
[24] Sanctis S,Hoffmann R C,Koslowski N,et al.Aqueous solution processing of combustible precursor compounds into amorphous indium gallium zinc oxide (IGZO) semiconductors for thin film transistor applications[J].Chemistry-An Asian Journal,2018,13(24):3912-3919.
[25] Shiloh R,Remez R,Lu P H,et al.Spherical aberration correction in a scanning transmission electron microscope using a sculpted thin film[J].Ultramicroscopy,2018,189:46-53.
[26] 中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.GB/T 2406.2—2009,塑料用氧指数法测定燃烧行为[S].北京:中国标准出版社,2010:1-28.
[27] 国家市场监督管理总局,国家标准化管理委员会.GB/T 2408—2021,塑料燃烧性能的测定水平法和垂直法[S].北京:中国标准出版社,2022:1-28.
[28] 孙强,王晋磊,孟雪,等.一种含磷/氮/硅成炭剂的合成及其阻燃环氧树脂的研究[J].化工新型材料,2022,50(7):133-136.
[29] Yang J X,Wang X L.Reactive extrusion of ammonium polyphosphate in a twin-screw extruder:polydispersity improvement[J].Chemical Engineering and Processing-Process Intensification,2018,133:58-65.
[30] 邵明珠,李丽萍,陈永祥.KH-550改性聚磷酸铵阻燃油松松针粉末的性能研究[J].中南林业科技大学学报,2016,36(4):125-129.
[31] 赖淦珠,马芳,陈建红.几种常见合成纤维的红外光谱分析[J].纺织报告,2020,39(10):17-18.
基金资助
国家重点研发计划资助项目(2018YFD0400701);上海市科学技术委员会工程中心建设基金资助项目(11DZ2280300);上海高校一流学科基金资助项目(A2-2019-14-0003)
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