均匀粒度分布的双壳相变储湿微胶囊制备

发布时间：2018-01-03 11:35

本文关键词：均匀粒度分布的双壳相变储湿微胶囊制备　出处：《复合材料学报》2017年11期 　论文类型：期刊论文

【摘要】：分别以正十八烷、甲基丙烯酸甲酯和壳聚糖作为核材料、内壳和外壳,采用细乳液原位聚合法及界面聚合法制备双壳相变储湿微胶囊。通过均匀设计与径向基函数神经网络结合,考察因素(如乳化剂用量、助乳化剂用量、引发剂用量、超声乳化时间和搅拌速度)对双壳相变储湿微胶囊粒度分布的影响,并且对最均匀粒度分布双壳相变储湿微胶囊进行表征与测试。结果表明,当扩展系数为0.55时,径向基函数神经(Radial Basis Function,RBF)网络具有最佳的逼近效果。最均匀粒度分布双壳相变储湿微胶囊的制备工艺参数:乳化剂用量为3.58wt%、助乳化剂用量为0.53wt%、引发剂用量为1.86wt%、超声乳化时间为11.35 min,搅拌速度为632r·min~(-1)。基于上述制备参数,d_(10)为3 352.0nm、d50为4 474.9nm,d_(90)为6 108.4nm,d_(90)-d_(10)实测值为2 756.4nm,实测值与预测值吻合较好,相对误差为2.69%。在相对湿度35%~65%的平衡含湿量为0.0547~0.1259g·g~(-1),相变温度为28.87℃,相变焓为78.45J·g~(-1)。
[Abstract]:In eighteen alkanes, methyl methacrylate and chitosan as core material, the inner shell and the outer shell, polymerization of double shell phase change microcapsule wet method and interfacial polymerization using in situ miniemulsion. Through the combination of uniform design and radial basis function neural network, the factors (such as emulsifying agent, CO emulsifier. The dosage of initiator, ultrasonic emulsification time and stirring speed) of double shell phase change wet effect of microcapsule particle size distribution, and the most uniform particle size distribution of double shell phase change microcapsules were characterized with wet test. The results show that when the expansion coefficient is 0.55, the radial basis function neural (Radial Basis Function, RBF) network has the best approximation effect. The uniform size distribution of double shell phase change wet process parameters for preparing microcapsules: emulsifier 3.58wt%, emulsifier dosage is 0.53wt%, the dosage of initiator is 1.86wt%, ultrasonic emulsification time 11.35 min, stirring speed was 632r min~ (-1). The preparation parameters based on d_ (10) 3 352.0nm, D50 4 474.9nm, d_ (90) 6 108.4nm, d_ (90) -d_ (10) the measured value was 2 756.4nm, the measured values are in good agreement with the predicted value, relative error 2.69%. in the relative humidity 35%~65% equilibrium moisture content of 0.0547~0.1259g g~ (-1), phase transition temperature of 28.87 DEG C, enthalpy of 78.45J g~ (-1).

【作者单位】：安徽工业大学建筑工程学院;冶金减排与资源综合利用教育部重点实验室(安徽工业大学);广州特种承压设备检测研究院;
【基金】：国家自然科学青年基金(51206002) 广东省省级科技计划(2015A030401059) 高等学校优秀青年人才基金(2010SQRL034)
【分类号】：TB34
【正文快照】： 网络出版地址:http://kns.cnki.net/kcms/detail/11.1801.TB.20170112.1100.006.html引用格式:张浩,熊磊,徐紫茹,等.均匀粒度分布的双壳相变储湿微胶囊制备[J].复合材料学报,2017,34(11):2556-2561.ZHANG Hao,XIONG Lei,XU Ziru,et al.Preparation of double-shell phase chan

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