非金属矿
非金屬礦
비금속광
NON-METALLIC MINES
2009年
4期
1-4
,共4页
蒙脱石%双官能团有机改性%湿法%插层%性能
矇脫石%雙官能糰有機改性%濕法%插層%性能
몽탈석%쌍관능단유궤개성%습법%삽층%성능
montmorillonite%bifunctional organo-modified%wetting technology%intercalation%property
在常温和80℃下分别采用超声波和高速剪切两种分散手段对新疆某矿天然膨润土进行湿法钠化、提纯,得到制备钠基蒙脱石(NaMMT)的适宜工艺条件;再以十六烷基三甲基溴化铵(CTABr)和聚乙二醇(PEG)对NaMMT进行插层处理制备出双官能团有机改性蒙脱石(BFOMMT),并采用XRD、TG-DSC和FTIR等测试方法对BFOMMT的结构与性能进行测试与表征,结果显示其中插入蒙脱石层间的PEG分子约占质量的10.54%,CTA+约占质量的7.73%,蒙脱石层间距明显增大,由1.248nm增至3.044nm.
在常溫和80℃下分彆採用超聲波和高速剪切兩種分散手段對新疆某礦天然膨潤土進行濕法鈉化、提純,得到製備鈉基矇脫石(NaMMT)的適宜工藝條件;再以十六烷基三甲基溴化銨(CTABr)和聚乙二醇(PEG)對NaMMT進行插層處理製備齣雙官能糰有機改性矇脫石(BFOMMT),併採用XRD、TG-DSC和FTIR等測試方法對BFOMMT的結構與性能進行測試與錶徵,結果顯示其中插入矇脫石層間的PEG分子約佔質量的10.54%,CTA+約佔質量的7.73%,矇脫石層間距明顯增大,由1.248nm增至3.044nm.
재상온화80℃하분별채용초성파화고속전절량충분산수단대신강모광천연팽윤토진행습법납화、제순,득도제비납기몽탈석(NaMMT)적괄의공예조건;재이십륙완기삼갑기추화안(CTABr)화취을이순(PEG)대NaMMT진행삽층처리제비출쌍관능단유궤개성몽탈석(BFOMMT),병채용XRD、TG-DSC화FTIR등측시방법대BFOMMT적결구여성능진행측시여표정,결과현시기중삽입몽탈석층간적PEG분자약점질량적10.54%,CTA+약점질량적7.73%,몽탈석층간거명현증대,유1.248nm증지3.044nm.
Some natural bentonite from Xinjiang was sodium-treated and purified through ultrasonic dispersion methods and high-speed-shear dispersion methods respectively, at the different temperature(room temperature and 80℃) by wetting technology. The process condition of sodium montmodllonite (NaMMT) was found as high-speed-shear dispersion methods at 80℃. The bifunctional organo-modified montmorillonite (BFOMMT) was prepared by intercalation reaction using polyethylene glycol (PEG) and cetyltrimethylammonium bromide (CTABr) as intercalating agents. The microstructure and properties were investigated by XRD, FTIR, DSC and TGA/DTG, respectively. The results indicate that 10.54 percent for PEG chains and 7.73 percent for CTA+ are efficienly intercalated into silicate layers, increasing the interlayer spacing from 1.248nm to 3.044nm.
