Preparation Of O/W Emulsion And Application In 3D Printing

3D printing is three-dimensional printing technology and additive manufacturing technology,which is used in many fields,such as,automotive,aviation and medical.There are many kinds of 3D printing technologies,different materials are used for different printing technologies.In this paper,photosensitive resin were studied which can be printed by DLP.The porous materials are widely used in industrial production,tissue engineering and other fields.When the resin of emulsion is curing,the porous material will be formed.In this paper,the preparation and application of o/w emulsion were studied.1.The preparation of o/w emulsion and research after cured: In this paper,the effect which the change of the types and proportions of monomers on the properties of the emulsions were examined.The viscosity of the emulsions and the hardness of the cured samples were tested respectively.The optimum ratio is determine:10g of acrylic monomer,0.1g of photoinitiator,3g of surfactant(85% for Span 65,15% for PEL121)and 36.5 ml of deionized water.When the acrylic monomer are composed of TMPTA and TPGDA,and the mass ratio of TMPTA and TPGDA is 3: 7,then the emulsion(viscosity 1120mpa·s,hardness 30 HD,the viscosity is moderate,the hardness is large)can be printed with DLP technology.The SEM of light-cured sample was tested and the porous structure was found..2.The application of light curing molding samples were discussed(1)The study of recognize sugar were tested: The AAPBA was added to the organic phase for the preparation of emulsion.According to the IR spectrum,it can be conclusion that AAPBA has polymerize and it is best when the quality of AAPBA is 5wt% to monomer.And the recognition about carbohydrates was discussed.When the pH of buffer solution is 6.8,the experiments were carried out for different kinds of sugar,the results were different.The results showed that the recognition on fructose and galactose were obvious,while on the mannitol and sucrose were in general.(2)The experiments about adsorption were carried out: Firstly,on the basis of the best formulation,the emulsions were prepared by changing the ratio of organic phase to water phase from 1:3.0 to 1:0.5.And the adsorption effect of photocurablesamples on malachite green solution were tested.The results show that the adsorption capacity on malachite green solution was the best when the mass ratio of organic phase and water phase is 1: 2.5.And the adsorption capacity increases with the increases of time till balance,the adsorption capacity increases with the increase of the oscillation frequency,but it does not affect the adsorption capacity of balance.