茂型金属复合催化丙烯酸酯聚合物多孔材料的研究  

Acrylate Polymer Open-porous Material by Metallocene Complex Catalyst

作　　者：黄月文[1,2,3] 王斌[1,2,3] 郑周[1,2] 张伟[1,3] 

机构地区：[1]中国科学院纤维素化学重点实验室,广东广州510650 [2]广州市绿色建材化学品重点实验室,广东广州510650 [3]佛山市功能高分子材料与精细化学品专业中心,广东佛山528000

出　　处：《广州化学》2016年第2期1-5,19,共6页Guangzhou Chemistry

基　　金：2015广州市科技计划项目(201510010183);广东省产学研基金项目:广东省中科化灌工程与材料院士工作站(2013B090400024)

摘　　要：以丙烯酸酯类单体、聚合物树脂粉料为主要原料,通过自制乳化剂的水乳液模板法和茂型金属-N,N-二甲基苯胺-过氧化物组成的复合氧化―还原引发体系,混合形成可室温快速聚合成型得到丙烯酸酯聚合物多孔材料的可浇注的悬浮乳液。研究了初始混合温度、搅拌速度和时间对操作工艺的影响和聚合固化过程中的热效应,讨论了聚合成孔机理、水和惰性树脂粉料对多孔材料孔隙和强度的影响、多孔材料的透气透水性能。结果表明,二茂铁比二茂钴、二茂镍、二茂钌等均具有更快的引发速率和单体转化率,在完全活性树脂粉料下成型的多孔材料可具有30 MPa以上抗压强度和40%以上的压缩形变,优异的透气透水性,开孔孔隙率达20%(V/V)以上;并且随着惰性树脂粉料的添加,多孔材料强度韧性和开孔孔隙率明显下降;而随着水用量的增加,开孔材料孔隙率增加,强度下降。A new acrylate polymer open-porous material was quickly accessed by water emulsion template method using the self-made emulsifier and by free radical redox Rolymerization by metallocene/ N,N-dimethylaniline/peroxide complex system at room temperature using a suspension pouring liquid of the mixture of acrylate monomers and polymer resin particles. The effects on the pouring operation of the initial mixing temperature, stirring speed and time and the thermal effect during the polymerization were studied. The pore forming mechanism, the effect of water and the inertia polymer resin particles on the porosity and strength, air and water permeability of the polymer open-porous material were investigated. Results showed that ferrocene had the fastest polymerization and the biggest conversion of monomers among the group 8 metallocenes cobaltocene, nickelocene and ruthenocene. The open-porous material had high compressive strength above 30 MPa, more than 40% compressive elastic deformation, excellent air and water permeability with the open hole porosity more than 20% in V/V under the complete active polymer resin particles. With the increase of the content of the inertia polymer resin particles, the strength, toughness and the open porosity of the forming material declined. With the increase of the content of water, the open porosity increased but the strength failed.

关 键 词：茂型金属 自由基氧化-还原聚合 乳液模板法 开孔材料 孔隙率 

分 类 号：TB324[一般工业技术—材料科学与工程]