丙烯酸树脂基 UV 固化复合材料的制备与表征

以丙烯酸树脂（ AR）为树脂基体，聚氨酯丙烯酸树脂（ CN9013）为预聚体，1，6-己二醇二丙烯酸酯（ HDDA）为稀释剂，纳米SiO2为填料，通过UV固化制备出不同配比的复合体系，研究复合材料微观相结构与各组分之间的关系。采用光学显微镜、SEM、超景深显微镜对固化后的体系进行表征，结果表明：丙烯酸树脂与预聚体及稀释剂单体能够形成均相，随着丙烯酸树脂含量增加，体系可形成分散相、双连续相和反转相；加入1％SiO2时，分散相粒径及其相区间距减小，双连续相两相区的结构有所增大，而反转相相区结构无明显变化。

Preparation and characterization of acrylic resin matrix UV curing composite materials

In order to study the evolution of phase structure and formation mechanism , acrylic resin was used as the matrix, aliphatic urethane acrylate resin as prepolymer , nano-silica is selected as a filler , 1,6-hexanediol diacrylate （ HDDA） the diluent , different proportions of composite systems were made by UV curing to explore the reactivity between microstructure and its respective constitution .SEM, Optical Microscope , VHX-S15 were used to characterize the systems .It suggests that acrylic resin has a good compatibility with prepolymer and mon-omer and can form a homogeneous phase .With the increasing content of acrylic resin , the systems can have three phases：dispersed phase , bicontinuous phase and diverted phase .When adding 1%silica, the size of dis-persed phase particles and the separation between different phases reduce , the structure of bicontinuous phase in-creases and there is no obvious changes in diverted phase .