干旱区生态环境知识资源中心(Arid): 适宜分散剂改善导水涂层材料中蒙脱土分散及吸脱附水性

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	适宜分散剂改善导水涂层材料中蒙脱土分散及吸脱附水性
其他题名	Improvement of montmorillonite dispersion and water absorption/dehydration of water-release coated materials with appropriate dispersants addition
	张超杰; 张增志; 陈兴龙
来源期刊	农业工程学报
ISSN	1002-6819
出版年	2016
卷号	32 期号:5 页码:82-87
中文摘要	添加分散剂可改善聚丙烯酰胺(poly acrylamide,PAM)/蒙脱土(montmorillonite,MMT)复合导水涂层材料制备过程中悬浮液浓度比例不均衡问题。该文研究添加分散剂聚乙烯吡咯烷酮(polyvinyl pyrrolidone,PVP)、聚乙烯醇(polyvinyl alcohol,PVA)、十二烷基硫酸钠(sodium dodecyl sulfate,SDS)对导水涂层材料性能的影响。通过扫描电镜对流挂纤维束的成膜性、涂层的微观形貌结构进行分析;采用热分析仪及质量法分析材料的吸脱附水特征;利用红外光谱仪对材料的化学成分进行分析。结果表明:对于PAM与MMT质量比为1:10的复合导水涂层材料,加入与PAM质量比为1:0.20的分散剂PVA后其成膜性最好;3种分散剂均改善了MMT的分散性;该材料吸脱附水能力为PAM/MMT/SDS >PAM/MMT>PAM/MMT/PVP>PAM/MMT/PVA复合材料,在约110 min时PAM/MMT/SDS材料的吸水率可达14 g/g,在100 min时其放湿量可达2.08 g/g;由复合材料的红外光谱分析可知并无新的物质生成,蒙脱土颗粒粘附在PAM和分散剂复合物内部网络结构支架上。该研究可为后续复合导水涂层材料成分比例精确选择提供参考。
英文摘要	Polyacrylamide (PAM)/montmorillonite (MMT) composite guide water-release coated materials can apply to the desertification control, but there is a problem in the process of materials preparation since concentration ratio is inaccurate caused by gravity and others. Adding dispersants is one of methods to solve the imbalance concentration ratio problem of PAM/MMT composite guide water-release coated materials. This study focused on the properties of water-release coated material after added different dispersants including polyvinyl pyrrolidone (PVP), polyvinyl alcohol (PVA), sodium dodecyl sulfate (SDS). The mass ratios of PAM and dispersants were 1:0.60 (PVP), 1:0.20(PVA), 1:0.25 (SDS) (mass ratios were based on the pre-experimental study on dispersants for suspension of the compound solution). The film-forming property of fiber bundle and the structure of coating microstructure were analyzed by scanning electron microscopy (SEM). Water absorption and dehydration characteristics of the composite materials were studied by the thermal analyzer and weight analysis. Infrared spectrometer could analyze the chemical composition of the composite materials. The scanning electron microscopy results showed that the composite material (mass ratios of PAM and MMT was 1:10) adding dispersants including PVP, PVA, and SDS, could improve its film-forming property and dispersion property of MMT in the network structure of PAM. The film-forming property was the best after adding PVA, and the dispersion property of MMT in polymer was best after adding the 3 dispersants. Water absorption and dehydration property analysis by thermal analyzer and weight analysis revealed that PAM/MMT/SDS composite material was best, followed by PAM/MMT composite material, then PAM/MMT/PVP composite material and PAM/MMT/PVA composite material. Water absorption rate of PAM/MMT/SDS composite could reach 14 g/g at about 110 min, and its release moisture content could reach 2.08 g/g at about 100 min. The infrared spectrum analysis of composite water-release coated materials showed that the stretching vibration absorption peak wave number of Si-O-Si was 1043.1 cm-1, and stone silicas wave number was 796.9 cm-1. There were not new wave number appeared, and some occurred an offset. No new substances were formed in the composite material after adding dispersants, and MMT particles were attached in the network structure of PAM and dispersants mixture network structure. Comparably, PVA was good at forming and strengthening film, but its water holding capacity was worse; while the SDS was the opposite. PVP was between the 2 dispersants. In practice, it needs to choose dispersants based on the requirements of application. The study provides valuable information for accurate determination of formula in the water-release coated materials preparation.
中文关键词	聚丙烯酰胺 ; 复合材料 ; 脱水 ; 蒙脱土 ; 导水涂层材料 ; 分散剂 ; 成膜性 ; 吸脱附水
英文关键词	polyacrylates composite materials dehydration montmorillonite water-release coating materials dispersant film-forming property water absorption
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENGINEERING CHEMICAL
WOS研究方向	Engineering
CSCD记录号	CSCD:5667606
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234600
作者单位	中国矿业大学(北京)机电与信息工程学院,生态功能材料研究所, 北京 100083, 中国
推荐引用方式 GB/T 7714	张超杰,张增志,陈兴龙. 适宜分散剂改善导水涂层材料中蒙脱土分散及吸脱附水性[J],2016,32(5):82-87.
APA	张超杰,张增志,&陈兴龙.(2016).适宜分散剂改善导水涂层材料中蒙脱土分散及吸脱附水性.农业工程学报,32(5),82-87.
MLA	张超杰,et al."适宜分散剂改善导水涂层材料中蒙脱土分散及吸脱附水性".农业工程学报 32.5(2016):82-87.