本文關(guān)鍵詞： 建筑節(jié)能 隔熱保溫 氣凝膠 一步溶劑置換-表面改性 玻璃　出處：《廣州大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：SiO_2氣凝膠材料具有輕質(zhì)多孔、超低導(dǎo)熱系數(shù)和超疏水等特點，作為隔熱保溫材料在建筑、工業(yè)等領(lǐng)域具有重要的研究和發(fā)展應(yīng)用價值。本文以SiO_2氣凝膠超級絕熱材料的快速制備方法及其建筑節(jié)能應(yīng)用為目標(biāo)，研究基于一步溶膠置換-表面改性快速處理與低成本常壓干燥的氣凝膠超級絕熱材料快速制備方法，采用單因素和正交實驗等實驗設(shè)計方法，研究氣凝膠制備工藝參數(shù)的影響機制和優(yōu)化方法，并分析氣凝膠在建筑玻璃等方面的建筑節(jié)能應(yīng)用效果。 采用單因素實驗方法研究了氣凝膠溶膠-凝膠、溶劑置換、表面改性等工藝參數(shù)影響，初步確定了氣凝膠材料的制備工藝參數(shù)范圍；通過四因素三水平正交實驗設(shè)計，對水解時間、老化液體積比、改性時間、改性劑濃度等關(guān)鍵工藝參數(shù)進行了優(yōu)化。實驗結(jié)果表明在水解時間為12h、老化液體積比為1:4、改性時間為72h、改性劑濃度為10%的制備工藝參數(shù)條件下，可獲得隔熱和疏水性能優(yōu)化的塊狀氣凝膠材料，其導(dǎo)熱系數(shù)和疏水角分別為0.018W/（m·K）和153.6°，具有超級絕熱和超疏水性能，且該制備流程周期相比常規(guī)制備工藝可縮短一半。 采用遮陽系數(shù)儀實驗測試了氣凝膠超級絕熱材料的紅外透射曲線，其可見光透過率和遮陽系數(shù)分別為64.2%和0.87；把實驗制備的塊狀氣凝膠材料作為夾層填充到雙層玻璃中制成氣凝膠夾層玻璃，實驗測試了氣凝膠夾層玻璃的紅外透射曲線和傳熱系數(shù)，結(jié)果表明其可見光透過率和太陽光直接透射率分別為43.2%和40%，遮陽系數(shù)和傳熱系數(shù)分別為0.66和1.2W/（m2·K），具有較好的透光隔熱保溫性能。 采用VE模擬軟件計算了氣凝膠夾層玻璃的建筑能耗，，計算結(jié)果表明與普通玻璃、Low-E玻璃和中空玻璃等相比，氣凝膠夾層玻璃的外窗傳熱負(fù)荷分別降低75%、63%和58%，在采暖為主的寒冷地區(qū)，采用氣凝膠夾層玻璃后全年建筑空調(diào)節(jié)能率可達18%，具有明顯的建筑節(jié)能效果。
[Abstract]:SiO_2 aerogel material has the characteristics of ultra light porous, low thermal conductivity and super hydrophobic, as thermal insulation materials in buildings, has an important research value for application and development of industry and other fields. With rapid SiO_2 aerogel super thermal insulation material in the preparation and application of building energy saving as the goal, the research step sol - replacement the surface modification of the rapid processing of aerogel super insulation materials with low cost and rapid preparation of atmospheric pressure drying method based on using single factor and orthogonal experiment design method, the influence mechanism and optimization method of process parameters on Preparation of aerogels, and analysis of aerogel in architectural glass and other aspects of the building energy saving effect.
Study on the aerogel sol gel, using the single factor experiment method of solvent replacement, surface modification effects of process parameters, determined the range of process parameters for preparation of aerogel materials; by four factors and three levels orthogonal experiment design, the hydrolysis time, aging liquid volume ratio, modification time, modification concentration etc. the key process parameters were optimized. The experimental results show that the 12h of hydrolysis time, aging liquid volume ratio is 1:4, the modified time is 72h, the concentration of modification process parameters for the 10% business conditions can be obtained and the performance optimization of the heat insulation hydrophobic aerogel material, its thermal conductivity and hydrophobic angle respectively. 0.018W/ (m - K) and 153.6 degrees, with super adiabatic and super hydrophobic properties, and the preparation process cycle compared with the conventional preparation process can be shortened by half.
Infrared transmittance curve of aerogel super thermal insulation material was tested by shading coefficient instrument experiment, the visible light transmittance and shading coefficient were 64.2% and 0.87; the aerogel materials prepared in the experiment as a sandwich filling to made of aerogel laminated glass double-layer glass, experimental aerogel laminated glass and infrared transmittance curve the heat transfer coefficient of the test, the results show that the transmittance of visible light and solar direct transmittance were 43.2% and 40%, shading coefficient and heat transfer coefficient were 0.66 and 1.2W/ (M2 - K), with good thermal insulation performance to translucent insulation.
The simulation software of VE aerogel laminated glass to calculate the building energy consumption, the calculation results show that compared with ordinary glass, Low-E glass and insulating glass windows, heat load of aerogel laminated glass were decreased by 75%, 63% and 58%, in the cold area heating, the aerogel laminated glass after the annual building energy-saving rate up to 18%, the building has obvious energy saving effect.

【學(xué)位授予單位】：廣州大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU551

【參考文獻】

相關(guān)期刊論文 前10條

1 何飛;赫曉東;李W

本文編號：1471274