CAJ | 학술논문

利用羧甲基纤维素钠、对苯乙烯磺酸钠以及甲基丙烯酸丁酯在水介质中用过硫酸钾为引发剂，合成羧甲基纤维素钠接枝对苯乙烯磺酸钠/甲基丙烯酸丁酯（CMC- g- PSS/PBMA）乳液。将乳液提纯提取出共聚物，共聚物采用傅丽叶红外光谱进行表征；用扫描电镜对水泥砂浆进行微观形貌观察。结果表明，在减水20%的条件下，当CMC- g- PSS/PBMA的掺量为1.5%时，对水泥砂浆抗压性能的改性最为显著；当掺量为2.5%时，对水泥砂浆抗折性能的改性最为显著；为了取得抗压性能和抗折性能均提升的试样，可向聚合物掺量为1.5%的试样中添加木质素磺酸钠增加乳液分散性，并用消泡剂磷酸三丁酯控制水泥砂浆的引气量，取得了显著的效果。
이용최갑기섬유소납、대분을희광산납이급갑기병희산정지재수개질중용과류산갑위인발제，합성최갑기섬유소납접지대분을희광산납/갑기병희산정지（CMC- g- PSS/PBMA）유액。장유액제순제취출공취물，공취물채용부려협홍외광보진행표정；용소묘전경대수니사장진행미관형모관찰。결과표명，재감수20%적조건하，당CMC- g- PSS/PBMA적참량위1.5%시，대수니사장항압성능적개성최위현저；당참량위2.5%시，대수니사장항절성능적개성최위현저；위료취득항압성능화항절성능균제승적시양，가향취합물참량위1.5%적시양중첨가목질소광산납증가유액분산성，병용소포제린산삼정지공제수니사장적인기량，취득료현저적효과。
The synthesis of sodium carboxymethylcellulose-g-poly (sodium p-styrenesulfonate) / poly (butyl methacrylate) emulsion is carried out by potassium persulfate induced graft copolymerization in homogeneous aqueous medium. The pure graft copolymer is extracted from the emulsion for characterization, which is used Fourier transform in-frared spectra (FTIR). The micromorphology of cement mortars could be observed by SEM. The results show that under the condition of water reducing 20%, when the dosage of the CMC-g-PSS/PBMA is 1.5%, the cement mortar obtains the best compressive property. When the graft copolymer is 2.5%, the cement mortar obtains the best flexural property. In order to obtain the sample of compressive property and flexural property improved at the same time, the sodium lignosulfonate should be put into the sample of the graft copolymer with 1.5% for intensifying its dispersing property. The tributyl phos-phate should be put into this sample for controlling the air entrained volume, and the effect is obvious.