本文關(guān)鍵詞： 地聚合物 秸稈 保溫 工藝優(yōu)化 抗酸堿性能 微觀結(jié)構(gòu)　出處：《浙江工業(yè)大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：對(duì)秸稈進(jìn)行資源化利用,制備秸稈地聚合物保溫材料,結(jié)合地聚合物自身的穩(wěn)定性能和秸稈的高隔熱保溫性能,使秸稈地聚合物成為一種新型的保溫建筑材料。秸稈地聚合物的合成不僅提高了秸稈的綜合利用率,減輕了對(duì)環(huán)境的污染,同時(shí)開辟了地聚合物的綜合利用新途徑。而且秸稈地聚合物具備高隔熱保溫性能、高強(qiáng)度和耐久性優(yōu)異等特性,是一種多功能的保溫建筑材料,可緩解能源危機(jī)現(xiàn)狀,同時(shí)緩解建筑資源能源短缺現(xiàn)象,對(duì)節(jié)能減排具有重大的現(xiàn)實(shí)指導(dǎo)意義,對(duì)實(shí)現(xiàn)可持續(xù)發(fā)展和資源合理利用產(chǎn)生深遠(yuǎn)的影響。本課題對(duì)秸稈地聚合物的工藝優(yōu)化及抗酸堿性能進(jìn)行了研究。主要研究得出秸稈地聚合物較優(yōu)的工藝配方,以及考查秸稈地聚合物的保溫性能和抗酸堿性能。通過(guò)對(duì)秸稈地聚合物進(jìn)行熱重-差熱(TG-DTA)分析、電鏡掃描(SEM)分析、X射線衍射(XRD)分析和傅立葉紅外光譜(FT-IR)分析來(lái)研究秸稈地聚合物的微觀結(jié)構(gòu)、分析秸稈與地聚合物的結(jié)合方式以及分析秸稈地聚合物的微觀結(jié)構(gòu)與保溫性能、抗酸堿性能的關(guān)系。主要結(jié)果如下：(1)秸稈地聚合物的配方為：A=3.9,B=0.30,偏高嶺土量為166.9g,摻入秸稈長(zhǎng)度為1mm,秸稈摻入量為4%,水灰比控制在0.10,制備得到的試塊置于20℃,相對(duì)濕度70%的恒溫恒濕箱中養(yǎng)護(hù)7 d。(2)秸稈地聚合物的導(dǎo)熱系數(shù)隨著秸稈摻量的增加而降低,當(dāng)秸稈摻量超過(guò)4%時(shí),秸稈地聚合物的導(dǎo)熱系數(shù)趨于穩(wěn)定,均低于0.07W/(m·K),具有良好的保溫效果；同時(shí),當(dāng)秸稈摻量超過(guò)4%時(shí),秸稈地聚合物在高溫煅燒后的抗壓強(qiáng)度值不理想,耐高溫性能減弱。因此結(jié)合對(duì)秸稈地聚合物導(dǎo)熱系數(shù)和耐高溫性能的測(cè)定結(jié)果,選取得出秸稈的最佳摻量為4%,從而制備得到高保溫、高性能的保溫建筑材料。由SEM可知,秸稈地聚合物為無(wú)定形層狀結(jié)構(gòu),秸稈的摻入提高了地聚合物的保溫性能,同時(shí)通過(guò)TG-DTA曲線分析得出秸稈地聚合物優(yōu)良的耐高溫性能。(3)秸稈地聚合物具有良好的抗酸堿性能。秸稈地聚合物經(jīng)酸堿浸泡28 d后,仍具有較好的抗壓性能。結(jié)合XRD、SEM和FT-IR分析可知,摻入秸稈后秸稈地聚合物中沒有新相生成,秸稈與地聚合物的結(jié)合方式為物理結(jié)合。由XRD和FT-IR圖譜可知,經(jīng)酸堿浸泡后秸稈地聚合物的結(jié)構(gòu)與未浸泡的秸稈地聚合物結(jié)構(gòu)基本保持一致,仍具有地聚合物的特性,反映了秸稈地聚合物良好的抗酸堿性能。同時(shí)由SEM可知,秸稈地聚合物經(jīng)酸堿浸泡之后雖然出現(xiàn)了氣孔和裂縫,但是緊密的層狀結(jié)構(gòu)依然清晰可見,保持了地聚合物的基本結(jié)構(gòu),因此具有良好的抗酸堿性能。因此,以秸稈為原料制備得到的秸稈地聚合物是一種高保溫、高強(qiáng)度以及抗酸堿性能良好的新型保溫建筑材料,具有良好的資源化利用前景。
[Abstract]:The straw was used as a resource to prepare the thermal insulation material of the straw ground polymer, which combined with the stability of the polymer itself and the high thermal insulation property of the straw. The synthesis of straw polymer not only improves the comprehensive utilization ratio of straw, but also reduces the pollution to the environment. At the same time, it opens up a new way of comprehensive utilization of geopolymers, and straw polymer has the characteristics of high thermal insulation, high strength and excellent durability, so it is a kind of multi-function thermal insulation building material. It can alleviate the current situation of energy crisis and alleviate the energy shortage of construction resources, which has great practical significance for energy saving and emission reduction. It has a profound impact on the realization of sustainable development and rational utilization of resources. This paper studies the optimization of the technology and acid and alkaline resistance of the straw polymer. The thermal insulation property and acid-base resistance of straw ground polymer were investigated. The thermogravimetric differential thermal analysis (TG-DTA) and SEM scanning electron microscopy (SEM) were used to analyze the stover ground polymer by thermogravimetric differential thermogravimetric analysis (TG-DTA) and scanning electron microscopy (SEM). X-ray diffraction (XRD) analysis and Fourier transform infrared spectroscopy (FTIR) analysis were used to study the microstructure of straw ground polymers. The combination of straw and geopolymer was analyzed, and the microstructure and thermal insulation property of the polymer were analyzed. The main results are as follows: (1) the formula of straw ground polymer is: 1: A3. 9 (BX) 0.30, the amount of metakaolin is 166.9 g, the length of straw is 1 mm, the content of metakaolin is 166.9 g, the content of metakaolin is 166.9 g, and the length of straw is 1 mm. The ratio of water to cement was controlled at 0.10, and the prepared sample was placed at 20 鈩，

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