纳米粒子修饰聚合物胶膜的制备与性能研究

发布时间：2018-07-11 09:28

本文选题：纳米二氧化硅 + 乙烯-醋酸乙烯酯　；参考：《大连理工大学》2016年硕士论文

【摘要】：随着建筑新材料的广泛使用,玻璃结构大量用于现代建筑。含聚合物胶膜的夹胶玻璃,也称安全玻璃,具有能够吸收冲击波、安全的特点,在现代建筑、汽车等得到广泛使用。但是由于玻璃本身的导热性能好,隔热性能差,所以太阳辐射导致建筑内室温升高,建筑内不得不加大空调力度来达到降温作用,导致现代建筑能耗剧增。因此,制备具有隔热性能的夹胶玻璃成为迫切需要解决的问题。本论文选择经济易得的EVA(乙烯-醋酸乙烯酯)聚合物来作为夹胶玻璃膜的中间膜基材,通过改性来制备透明、隔热的夹胶玻璃膜。将由硅烷偶联剂包覆改性的纳米二氧化硅和中空玻璃微球作为改性剂,溶液共混于EVA胶膜中,提高胶膜的隔热性能,研究不同含量的纳米粒子对胶膜透光率、隔热性、拉伸性能、剥离强度、热稳定性的影响,并用扫描电镜观察纳米粒子在胶膜中的分布情况。由于纳米粒子与聚合物基体存在相容性的问题,本论文将反应性单体浸润的二氧化硅液凝胶原位聚合于EVA粒料溶液中,用扫描电镜进行观察,发现改善了纳米粒子的相容性。同时考察不同含量的液凝胶对改性胶膜的透光率、隔热性、拉伸性能、剥离强度和热稳定性的影响。为进一步提高夹胶玻璃膜的隔热性能,实验室将自制有序介孔二氧化硅作为纳米改性剂制备了改性EVA胶膜。用激光粒度仪、透射电镜和BET吸附来表征自制纳米粒子的有序介孔结构,结果表明自制二氧化硅具有有序介孔结构。考察不同添加量对改性EVA透光率、隔热性、拉伸性能、剥离强度和热稳定性的影响,结果表明改性胶膜是一种隔热性能优异的夹胶玻璃膜材料。
[Abstract]:With the wide use of new building materials, glass structures are widely used in modern architecture. Adhesive glass containing polymer film, also known as safety glass, has been widely used in modern buildings, automobiles and so on because of its characteristics of shock wave absorption and safety. However, because of the good thermal conductivity and poor thermal insulation of the glass itself, the solar radiation leads to the increase of room temperature in the building, and the building has to increase the air conditioning to achieve the cooling effect, resulting in a sharp increase in energy consumption in modern buildings. Therefore, the preparation of insulating glass-sandwich glass has become an urgent problem to be solved. In this paper, EVA (Ethylene Acetate) polymer was chosen as the intermediate film substrate of the glass-intercalated film. The transparent and heat-insulating intercalated glass-film was prepared by modification. Nano-silica modified by silane coupling agent and hollow glass microsphere were used as modifiers, and the solution was mixed in EVA film to improve the thermal insulation property of the film, and to study the transmittance and thermal insulation of the film with different contents of nano-particles. The effects of tensile properties, peel strength and thermal stability were investigated. The distribution of nanoparticles in the film was observed by scanning electron microscope (SEM). Due to the compatibility between nano-particles and polymer matrix, the in-situ polymerization of silica hydrogel with reactive monomer in EVA particle solution was studied by scanning electron microscope (SEM), and it was found that the compatibility of nano-particles was improved. At the same time, the effects of different contents of hydrogels on the transmittance, thermal insulation, tensile properties, peel strength and thermal stability of the modified films were investigated. In order to further improve the thermal insulation performance of glass-intercalated glass film, the modified EVA film was prepared by using self-made ordered mesoporous silica as nano-modifier. The ordered mesoporous structure of self-made nanoparticles was characterized by laser particle size analyzer, transmission electron microscope and BET adsorption. The results show that the self-made silica has ordered mesoporous structure. The effects of different additives on the transmittance, thermal insulation, tensile properties, peeling strength and thermal stability of modified EVA were investigated. The results showed that the modified film was a kind of intercalated glass film with excellent thermal insulation.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TB383.2

【参考文献】