納米粒子修飾聚合物膠膜的制備與性能研究
本文選題:納米二氧化硅 + 乙烯-醋酸乙烯酯; 參考:《大連理工大學(xué)》2016年碩士論文
【摘要】:隨著建筑新材料的廣泛使用,玻璃結(jié)構(gòu)大量用于現(xiàn)代建筑。含聚合物膠膜的夾膠玻璃,也稱安全玻璃,具有能夠吸收沖擊波、安全的特點(diǎn),在現(xiàn)代建筑、汽車等得到廣泛使用。但是由于玻璃本身的導(dǎo)熱性能好,隔熱性能差,所以太陽(yáng)輻射導(dǎo)致建筑內(nèi)室溫升高,建筑內(nèi)不得不加大空調(diào)力度來(lái)達(dá)到降溫作用,導(dǎo)致現(xiàn)代建筑能耗劇增。因此,制備具有隔熱性能的夾膠玻璃成為迫切需要解決的問(wèn)題。本論文選擇經(jīng)濟(jì)易得的EVA(乙烯-醋酸乙烯酯)聚合物來(lái)作為夾膠玻璃膜的中間膜基材,通過(guò)改性來(lái)制備透明、隔熱的夾膠玻璃膜。將由硅烷偶聯(lián)劑包覆改性的納米二氧化硅和中空玻璃微球作為改性劑,溶液共混于EVA膠膜中,提高膠膜的隔熱性能,研究不同含量的納米粒子對(duì)膠膜透光率、隔熱性、拉伸性能、剝離強(qiáng)度、熱穩(wěn)定性的影響,并用掃描電鏡觀察納米粒子在膠膜中的分布情況。由于納米粒子與聚合物基體存在相容性的問(wèn)題,本論文將反應(yīng)性單體浸潤(rùn)的二氧化硅液凝膠原位聚合于EVA粒料溶液中,用掃描電鏡進(jìn)行觀察,發(fā)現(xiàn)改善了納米粒子的相容性。同時(shí)考察不同含量的液凝膠對(duì)改性膠膜的透光率、隔熱性、拉伸性能、剝離強(qiáng)度和熱穩(wěn)定性的影響。為進(jìn)一步提高夾膠玻璃膜的隔熱性能,實(shí)驗(yàn)室將自制有序介孔二氧化硅作為納米改性劑制備了改性EVA膠膜。用激光粒度儀、透射電鏡和BET吸附來(lái)表征自制納米粒子的有序介孔結(jié)構(gòu),結(jié)果表明自制二氧化硅具有有序介孔結(jié)構(gòu)?疾觳煌砑恿繉(duì)改性EVA透光率、隔熱性、拉伸性能、剝離強(qiáng)度和熱穩(wěn)定性的影響,結(jié)果表明改性膠膜是一種隔熱性能優(yōu)異的夾膠玻璃膜材料。
[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.
【學(xué)位授予單位】:大連理工大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2016
【分類號(hào)】:TB383.2
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