丙烯酸树脂及其复合材料的制备与性能研究

发布时间：2018-08-08 18:05

【摘要】：丙烯酸树脂是一类分子中含有不饱和双键的丙烯酸酯类单体通过共聚而成的树脂,由于合成丙烯酸树脂的单体性质活泼且所含取代基多样,使得丙烯酸树脂具有优异的光泽度、耐候性及稳定性能,被广泛应用于电子材料、胶黏剂、光学材料、生物医药材料等领域。本论文针对印制电路领域对金相镶嵌料的特殊性要求,围绕室温固化双组份丙烯酸树脂及其复合材料的制备、以及丙烯酸树脂在金相检测领域的应用开展研究。自由基聚合是制备丙烯酸树脂的方法之一,其中各聚合单体之间的配比、聚合条件等对所制备的树脂性能具有重要影响。在甲基丙烯酸甲酯(MMA)和甲基丙烯酸缩水甘油酯(GMA)作为组分A的共聚单体、过氧化苯甲酰(BPO)/N,N-二甲基对甲苯胺(DMT)作为氧化-还原引发体系的反应中,采用红外光谱分析、差示扫描量热分析等手段,对树脂的固化时间、体积收缩率、热稳定性等展开研究。结果表明,当组分A中GMA含量为0.25,BPO/DMT=5时,树脂固化后性能最佳。添加无机填料可改进树脂的应用性能。针对丙烯酸树脂应用于金相检测方面的特点与要求,以前期获得的树脂作为基体,选择纳米SiO2、纳米TiO2和纳米CaCO3,获得经硅烷偶联剂改性过后的填料,研究无机填料形貌、添加比例、基本物理化学特性等对丙烯酸树脂性能的影响与规律,并获得了SiO2/丙烯酸树脂、TiO2/丙烯酸树脂、CaCO3/丙烯酸树脂等复合材料。复合材料的SEM、DSC和力学性能测试等结果表明,三种填料均能均匀分散于丙烯酸树脂聚合物介质中,且复合材料的力学性能也有很大程度提升。当组分A中TiO2、SiO2、CaCO3的含量分别为0.1wt%、0.2wt%、0.5wt%时,所制得的复合材料的拉伸强度、弯曲强度和粘结剪切强度最大,分别提升81.52%、56.67%、52.87%。金相检测镶嵌料是印制电路金相检测技术中的必需材料之一。透明性、固化时间、加工性能等是其重要的应用参数。通过与西铁树脂和牙托粉树脂对比研究,采用接触角测定、金相检测等手段表征,结果表明,新开发的丙烯酸树脂镶嵌料外观透明,能够对金相试样充分润湿和包裹,磨抛和抛光后剖面平整、光滑、肉眼观察色泽明亮,具有镜面反射效果,树脂与铜线界面清晰,未出现分层现象,达到金相试样检测效果。
[Abstract]:Acrylic resin is a kind of acrylic resin which contains unsaturated double bond. The acrylic resin has excellent glossiness due to its active monomer properties and various substituents. Weather resistance and stability are widely used in electronic materials, adhesives, optical materials, biomedical materials and other fields. In this paper, the preparation of two-component acrylic resin and its composite materials and the application of acrylic resin in metallographic testing are studied in accordance with the particularity of metallographic inlay in the field of printed circuit. Free radical polymerization is one of the methods for preparing acrylic resin. In the reaction of methyl methacrylate (MMA) and glycidyl methacrylate (GMA) as comonomer of component A and benzoyl peroxide (BPO) / N) -dimethyl-p-methylaniline (DMT) as the redox initiator system, IR spectra were used. The curing time, volume shrinkage and thermal stability of resin were studied by differential scanning calorimetry. The results show that when the content of GMA in component A is 0.25 BPO / DMT = 5, the properties of the resin are the best after curing. The application property of resin can be improved by adding inorganic filler. In view of the characteristics and requirements of acrylic resin used in metallographic examination, nano-SiO _ 2, nanometer TiO2 and nano-CaCO _ 3 were selected as matrix, and the morphology of inorganic fillers was studied after modified by silane coupling agent. The effect and regularity of adding ratio, basic physical and chemical properties on the properties of acrylic resin were studied. The composite materials such as SiO2/ acrylic resin TiO2 / acrylic resin CaCO3 / acrylic resin were obtained. The results of SEM DSC and mechanical properties test show that the three fillers can be uniformly dispersed in the acrylic resin polymer media and the mechanical properties of the composites are improved to a large extent. When the content of TiO2SiO2CaCO3 in component A is 0.1 wt%, the tensile strength, flexural strength and bond shear strength of the composites are the highest, and the tensile strength, flexural strength and bond shear strength of the composites are 81.52and 56.67%, respectively. Metallographic testing inlay is one of the necessary materials in printed circuit metallographic inspection technology. Transparency, curing time and processing performance are important application parameters. Compared with iron resin and denture powder resin, it was characterized by contact angle measurement and metallographic examination. The results showed that the newly developed acrylic resin inlay was transparent in appearance and could fully wetting and wrapping metallographic samples. After polishing and polishing, the profile is smooth and smooth, the naked eye has bright color, mirror reflection effect, the interface between resin and copper wire is clear, there is no delamination, and the detection effect of metallographic sample is achieved.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TQ325.7;TB33

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