Preparation Of 3D Printing Ray Shielding Materials And Radiation Resistant Phenyl Silicone Rubber

The main contents of this paper include the following two parts:the first part is the preparation and performance study of high filled thermoplastic elastomer 3D print ray shielding composite;the second part is the synthesis,preparation and modification of radiation resistant phenyl silicone rubber.1.The 3D printing technology is applied to the processing and forming of ray shielding composite materials.TPU is selected as the matrix of composite material,and the shielding agent of different number of shields and two octyl of phthalic acid(DOP)is added to prepare a kind of high filling ray shielding composite suitable for 3D printing,and the surface micromorphology of the printing model is also made.The shielding properties,mechanical properties and thermal properties of gamma ray were studied.2.The synthesis and preparation process of irradiated phenyl silicone rubber were studied.The influence of the amount of catalyst,the proportion of the monomer and the reaction time on the structure and properties of the product were investigated.The optimum reaction conditions and the monomer ratio were obtained.The preparation of the phenyl silicone rubber was mixed and the mechanical properties were tested and the normal methyl vinyl silicone rubber was tested.The properties of the rubber were compared,and the mechanical properties of the prepared phenyl silicone rubber were better than that of the ordinary methyl vinyl silicone rubber.In addition,the silicone rubber with low glass transition temperature was prepared by introducing a flexible monomer into the molecular chain of the phenyl silicone rubber.