CAJ | 학술논문

以异丁烯醇聚氧乙烯醚（HPEG）、丙烯酸（AA）、甲基丙烯磺酸钠（SMAS）为单体，通过芬顿试剂引发反应，在常温下制备了三元聚羧酸型减水剂（PC），探讨了不同反应条件对减水剂分散性能的影响，并通过傅里叶红外（FTIR）和凝胶渗透色谱（GPC）等手段对共聚物进行了表征。得到最佳合成条件为：引发剂滴加时间3h，引发剂过氧化氢/硫酸亚铁质量比1.2∶1，反应温度30℃，酸醚摩尔比4∶1，磺酸盐用量为单体总质量的1.6%，链转移剂用量为总单体质量的1.5%。当减水剂折固掺量为0.3%时，水泥初始净浆流动度为290 mm，1h后提升到302mm。此常温下合成的减水剂具有良好的分散性和保持性，该方法是一种有应用前景的常温合成方法。
이이정희순취양을희미（HPEG）、병희산（AA）、갑기병희광산납（SMAS）위단체，통과분돈시제인발반응，재상온하제비료삼원취최산형감수제（PC），탐토료불동반응조건대감수제분산성능적영향，병통과부리협홍외（FTIR）화응효삼투색보（GPC）등수단대공취물진행료표정。득도최가합성조건위：인발제적가시간3h，인발제과양화경/류산아철질량비1.2∶1，반응온도30℃，산미마이비4∶1，광산염용량위단체총질량적1.6%，련전이제용량위총단체질량적1.5%。당감수제절고참량위0.3%시，수니초시정장류동도위290 mm，1h후제승도302mm。차상온하합성적감수제구유량호적분산성화보지성，해방법시일충유응용전경적상온합성방법。
With Isobutene polyoxyethylene ether (HPEG),acrylic acid (AA),methyl propene sulfonate (SMAS) as raw material, and initiated by Fenton reagent,polycarboxylate superplasticizers were prepared at room temperature. Relationship between different reaction condition and dispersion of polycarboxylic superplasticizer was discussed respectively. The copolymer was analyzed by Fourier transform infrared spectrometer(FTIR) and Gel permeation chromatography(GPC) .The optimal condition of synthesis is obtained as follows:H2O2/Fe2+as initiator was used in an amount of 2% of the total mass of the monomers andm(H2O2)∶m(FeSO4)=1.2∶1,the titration time of initiator was 3h,the polymerization temperature was 30℃,n(AA)∶n(HPEG)=4∶1,the dosage of sulphonates was 1.6%of the total mass of the monomers,the chain transfer agent was thioglycolic acid and the dosage is 1.5% of the total mass of the monomers. The results showed that the initial fluidity of cement paste could exceed 290 mm and exceed 302mm after 1hours,when the dosage of polycarboxylate water reducer was 0.3% of cement mass,together with 0.29 of water cement ratio. This polycarboxylate superplastic synthesized at room temperature has high dispersity and dispersion retention,which provides a promising room temperature synthesis method.