Performance Analysis Of 3D Printing SiO₂/Acrylic Resin Based On Light Curing

In the field of 3D printing technology,acrylic photosensitive resin has a great influence,because it has the characteristics of light weight and high strength,but acrylic photosensitive resin also has certain shortcomings,such as low toughness and impact resistance.In order to make the application of acrylic photosensitive resin demand more extensive,generally through the acrylic photosensitive resin to add a variety of organic-inorganic materials to improve the performance of composite materials.In this paper,modified nano-SiO₂ toughened acrylic photosensitive resin was used to prepare nano-SiO₂/acrylic photosensitive resin composite material,which was formed by photocuring3D printing.The friction and wear properties and erosive wear properties of SiO₂/acrylic acid photosensitive composite material samples were tested to study the influence of wear time on material wear,as well as the wear rate of SiO₂ composite material patterns with different mass fractions under the same time,and the influence of erosion Angle on the erosion wear rate.The surface morphology of the worn material was analyzed by scanning electron microscopy.The experimental results show that when the content of SiO₂ reaches5%,the wear quality of acrylic photosensitive resin composites is minimum and the wear resistance is the best.When the erosion Angle is 45°,the material mass loss is the largest and the wear is the most obvious.When the erosion Angle is 30°,the acrylic photosensitive resin composite with 5%SiO₂ content has the best wear resistance.Compared with the blank sample,the mass loss is reduced by 6.5%.At the same time,the micro characterization of the acrylic photosensitive resin composite is carried out to analyze the wear mechanism.The tensile and three-point bending properties of SiO₂/acrylic acid photosensitive composites were investigated.The influence of different mass fractions of SiO₂on the performance of acrylic resin was investigated,the optimal reaction ratio was determined,and the tensile fracture surface morphology of the composite was analyzed.The results show that when the content of SiO₂ is 2.5%,the mechanical properties of acrylic photosensitive resin composites are the best.Compared with pure acrylic photosensitive resin materials,the tensile strength and bending strength are increased by 39.1%and46.77%,respectively.According to the tensile fracture morphology analysis,the modified SiO₂ as a toughening material can effectively prevent the crack diffusion and improve the comprehensive performance of the composite.The influence of corrosion time on the corrosion resistance of materials in seawater environment was studied by using artificial simulated Marine environment,full immersion accelerated corrosion was adopted,and the temperature was constant temperature.The seawater corrosion cycle was divided into four cycles,which were 30d,60d,90d and 120d,respectively,and the mechanical properties and corrosion surface morphology before and after corrosion were analyzed.Explore the corrosion resistance of the sample before and after corrosion.When the corrosion cycle is 60d,the corrosion rate is the fastest.When the content of SiO₂ is 2.5%,the corrosion resistance of the material is the best.Figure[26]table[6]reference[109]...