【摘要】：為研究開發(fā)強度高、耐腐蝕性好的保溫建筑材料,以節(jié)省建筑能源消耗,拓寬秸稈工業(yè)化利用途徑,該文將秸稈摻入到土壤聚合物中制備秸稈土聚物,以抗壓強度為指標,優(yōu)選秸稈土聚物的較優(yōu)工藝,并測定了秸稈土聚物的導熱系數(shù),確定其保溫性能。用X射線衍射、傅立葉紅外光譜以及掃描電鏡對秸稈土聚物復合材料的晶相成分、化學鍵合和微觀結構進行了分析。結果表明秸稈土聚物較優(yōu)工藝配方如下:反應體系中Si O2與Al2O3摩爾比為3.9,Na2O與Si O2摩爾比為0.30,秸稈摻量4%,長度1 mm,水灰比0.10,制備得到的試塊置于(20±2)℃、相對濕度為70%±2%的環(huán)境中養(yǎng)護,其7 d抗壓強度可達54.58 MPa,導熱系數(shù)為0.0681 W/(m·K)。X射線衍射、傅立葉紅外光譜以及掃描電鏡分析表明秸稈土壤聚合物為Si,O,Al組成的半晶態(tài),無定形層狀結構,與純土聚物紅外特征峰相同,無新化學鍵生成。秸稈土聚物界面處出現(xiàn)間隙和裂紋,裂紋遇秸稈后轉向,產生二次裂紋,形成弱結合界面。初步判斷秸稈與土聚物之間沒有發(fā)生化學結合。研究結果為秸稈的工業(yè)資源化利用開辟了一條新途徑,也為綠色保溫建筑材料的研究提供依據(jù)。
[Abstract]:In order to study and develop thermal insulation building materials with high strength and good corrosion resistance in order to save energy consumption of buildings and widen the way of industrialized utilization of straw, straw was mixed into soil polymer to prepare straw soil polymer, and the compressive strength was taken as index. The optimum technology of selecting straw soil polymer was studied. The thermal conductivity of straw soil polymer was measured and its thermal insulation property was determined. The crystal phase composition, chemical bonding and microstructure of the composite were analyzed by X-ray diffraction, Fourier transform infrared spectroscopy and scanning electron microscope. The results showed that the optimum conditions were as follows: the molar ratio of Si O 2 to Al2O3 was 3.9%, the molar ratio of Si O 2 to Si O 2 was 0.30, the content of straw was 4%, the length of 1 mm, was 0.10% of water to cement. The prepared samples were preserved at (20 鹵2) 鈩，

本文編號：2366749