丙烯酸酯共聚物分散剂的制备及性能评价  

Preparation and performance evaluation of acrylate copolymer dispersant

作　　者：黄玉春 周艺轩 郭康贤[1] HUANG Yu-chun;ZHOU Yi-xuan;GUO Kang-xian(School of Physics and Materials Science,Guangzhou University,Guangzhou 510006,China;Guangdong Jinge Material Co.,Ltd.,Foshan 528100,China)

机构地区：[1]广州大学物理与材料科学学院,广东广州510006 [2]广东金戈新材料股份有限公司,广东佛山528100

出　　处：《广州大学学报(自然科学版)》2025年第1期41-49,共9页Journal of Guangzhou University:Natural Science Edition

基　　金：广州市重点研发计划资助项目(2023B03J1279)。

摘　　要：以丙烯酸丁酯(BA)、丙烯酸(AA)和丙烯酸羟乙酯(HEA)为单体,通过自由基溶液聚合合成了丙烯酸酯共聚物分散剂P(BA-AA-HEA),并采用傅里叶变换红外光谱(FT-IR)、核磁共振波谱(NMR)和凝胶渗透色谱(GPC)对其进行了表征及分析。将P(BA-AA-HEA)应用于超细氢氧化铝粉体颗粒在环氧树脂基体的分散中,探究添加P(BA-AA-HEA)的添加量对氢氧化铝-环氧树脂复合材料的粘度、抗沉降、稳定性和剪切强度等系数的影响,并与市售Y016分散剂做对比。结果表明,P(BA-AA-HEA)和Y016分散剂都能使氢氧化铝粉体颗粒更容易分散在环氧树脂基体中,有效使氢氧化铝-环氧树脂复合材料更具有流动性,粘度降低了60%左右。同时,与市售Y016分散剂相比,采用P(BA-AA-HEA)制备的氢氧化铝-环氧树脂复合材料具有更好的抗沉降性能、稳定性和更高的剪切强度。具体来说,与Y016分散剂组相比,P(BA-AA-HEA)组在保持氢氧化铝-环氧树脂复合材料粘度在26000 mPa·s左右的同时,还具有优异的氢氧化铝粉体颗粒抗沉降效果,如7天内无明显沉降;加入P(BA-AA-HEA)后,材料的剪切强度由9.246 MPa提高到11.617 MPa。本研究结果有望用于环氧树脂体系配方的工业化应用。An acrylate copolymer dispersant P(BA-AA-HEA)was synthesized by free radical solution polymerization using butyl acrylate(BA),acrylic acid(AA)and hydroxyethyl acrylate(HEA)as monomers.The polymer was characterized and analyzed by Fourier transform infrared spectroscopy(FT-IR),nuclear magnetic resonance spectroscopy(NMR)and gel permeation chromatography(GPC).P(BA-AA-HEA)was applied to the dispersion of ultrafine aluminum hydroxide powder particles in an epoxy resin matrix.The effects of the addition amount of P(BA-AA-HEA)on the viscosity,anti-sedimentation,stability and shear strength of aluminum hydroxide-epoxy resin composites were investigated,and compared with commercially available Y016 dispersant.The results show that both P(BA-AA-HEA)and Y016 dispersants can make the aluminum hydroxide powder particles more easily dispersed in the epoxy resin matrix,which effectively making the aluminum hydroxide-epoxy resin composite more fluidity,and the viscosity is reduced by about 60%.At the same time,compared with the commercially available Y016 dispersant,the aluminum hydroxide-epoxy resin composite prepared by the P(BA-AA-HEA)has better anti-settling performance,stability and higher shear strength.Specifically,compared with the Y016 dispersant group,the P(BA-AA-HEA)group has an excellent anti-sedimentation effect of aluminum hydroxide powder particles while maintaining the viscosity of aluminum hydroxide-epoxy resin composite at about 26000 mPa·s,such as no obvious settlement within 7 days;the shear strength of the material increased from 9.246 MPa to 11.617 MPa after adding P(BA-AA-HEA).The results of this study are expected to be used in the industrial application of epoxy resin system formulations.

关 键 词：丙烯酸酯共聚物 分散剂 氢氧化铝 环氧树脂 复合材料 

分 类 号：O561.2[理学—原子与分子物理] O561.3[理学—物理]