【摘要】：以甲基丙烯磺酸鈉(MAS)、含親水長鏈的烯類單體(CL)、丙烯酸(AA)和烯丙基三甲基氯化銨(TMAAC)為原料,合成了一種高溫緩凝劑(AMCT)。通過正交實(shí)驗(yàn)得到的最佳合成條件為:n(AA)∶n(MAS)∶n(CL)∶n(TMAAC)=4.0∶1.0∶0.15∶0.10,引發(fā)劑(NH4)2S2O8加量為單體總質(zhì)量的4%,單體質(zhì)量濃度300 g/L,反應(yīng)溫度85℃,反應(yīng)時(shí)間24 h。利用IR和~1HNMR表征了AMCT的結(jié)構(gòu)。采用TGA考察了AMCT的耐溫性能。以稠化時(shí)間考察了AMCT的溫度敏感性和加量敏感性。通過AMCT對水泥漿流變性能的影響說明其分散性和穩(wěn)定性。通過XRD、EDTA滴定和低場核磁等方法分析了AMCT的緩凝機(jī)理。結(jié)果表明:AMCT的分解溫度為255℃;AMCT的溫度敏感性和加量敏感性均符合行業(yè)標(biāo)準(zhǔn)要求;AMCT對水泥漿分散性和穩(wěn)定性無不良影響;AMCT的緩凝機(jī)理為自匹配吸附形成包覆層控制水化作用、抑制晶體生長作用和絡(luò)合作用。
[Abstract]:A kind of high temperature retarder (AMCT). Was synthesized from (CL), acrylic acid (AA) and allyl trimethylammonium chloride (TMAAC), which contains hydrophilic and long chain of sodium methallyl sulfonate (MAS),. The optimum synthetic conditions obtained by orthogonal experiment are as follows: n (AA): n (MAS): n (CL): n (TMAAC) = 4.0: 1.0: 0.15: 0.10, the amount of initiator (NH4) 2S2O8 is 4% of the total mass of monomer, The monomer concentration was 300 g / L, the reaction temperature was 85 鈩，

本文編號：2371109