摘要
为克服纸张作为阻隔包装材料时存在的阻氧、阻湿缺陷,本研究以紧度高的薄页纸为基材,以聚乙烯醇(PVA)分别与3种片状(纳米蒙脱土、纳米剥片瓷土、纳米水滑石)和1种球状(纳米二氧化硅)颜料组成的复合涂料为功能涂层进行改良,并探讨复合涂料中不同纳米颜料对薄页纸阻氧、阻湿性能的影响。结果表明,高径厚比片状纳米剥片瓷土用量为10份时的薄页纸,其阻隔性能最好,氧气透过率(OTR)和水蒸气透过率(WVTR)分别达到了76.6 cm^(3)/(m^(2)·24 h)和189.3 g/(m^(2)·24 h),较原纸的2520 cm^(3)/(m^(2)·24 h)和207.3 g/(m^(2)·24 h)分别降低了97%和9%。含有不同用量和种类纳米颜料的PVA/纳米颜料复合涂料,均可显著提高薄页纸的阻氧性能,但阻湿性能改善有限;当纳米颜料用量相同时,含纳米剥片瓷土、纳米蒙脱土、纳米水滑石和纳米二氧化硅涂层的OTR分别为76.5、73.5、50.2和90.2 cm^(3)/(m^(2)·24 h),WVTR分别为189.3、187.2、185.6和197.3 g/(m^(2)·24 h)。
In order to overcome the oxygen and moisture resistance defects of paper as a barrier packaging material,the effects of different nano pigments including 3 kinds of flaky nanomaterials(montmorillonoid,platey kaolins,layered double hydroxide),and 1 kind of spherical nanomaterial(silica)on the oxygen and moisture resistance performances of the thin paper were explored in this study,and thin paper with high tightness was used as the substrate and composite coatings composed of different nano pigments and PVA were used as the functional coating.The results showed that when the dosage of nano platey kaolin with high aspect ratio and flaky shape was 10 parts,the best resistance performances were achieved with oxygen transmission rate(OTR)and water vapor transmission rate(WVTR)reaching 76.6 cm^(3)/(m^(2)·24 h)and 189.3 g/(m^(2)·24 h),respectively,which had decreased by 97%and 9%,compared to the base paper’s 2520 cm^(3)/(m^(2)·24 h)and 207.3 g/(m^(2)·24 h).The PVA/nano pigments composite coatings containing different dosages and forms of nano pigments could significantly improve the oxygen resistance performance of thin paper,but the improvements in moisture resistance performance were limited.When the same dosage of nano pigments was used,the OTR values of composite coatings containing nano platey kaolins,nano montmorillonite,nano layered double hydroxide,and nano silica were 76.5,73.5,50.2,and 90.2 cm^(3)/(m^(2)·24 h),respectively,with WVTR values of 189.3,187.2,185.6,and 197.3 g/(m^(2)·24 h),respectively.
作者
苏艳群
肖贵华
李洪才
夏菲
张瑞娟
刘金刚
杨小博
葛继明
李红
SU Yanqun;XIAO Guihua;LI Hongcai;XIA Fei;ZHANG Ruijuan;LIU Jingang;YANG Xiaobo;GE Jiming;LI Hong(China National Pulp and Paper Research Institute Co.,Ltd.,Beijing,100102;National Engineering Lab for Pulp and Paper,Beijing,100102;Sinolight Fiber Composite Materials Technology(Langfang)Co.,Ltd.,Langfang,Hebei Province,065008;School of Light Industry and Engineering,South China University of Technology,Guangzhou,Guangdong Province,510640)
出处
《中国造纸学报》
北大核心
2025年第4期140-146,共7页
Transactions of China Pulp and Paper
基金
中国轻工集团有限公司科技创新基金项目(ZQ2023YY-GX03)。
关键词
阻氧
阻湿
聚乙烯醇
纳米颜料
oxygen resistance
moisture resistance
polyvinyl alcohol
nano pigment
