本文選題：煤礦封孔材料　切入點(diǎn)：微膠囊　出處：《中國(guó)安全生產(chǎn)科學(xué)技術(shù)》2015年09期 　論文類(lèi)型：期刊論文

【摘要】：針對(duì)當(dāng)前礦用水泥封孔材料中膨脹劑的膨脹能效發(fā)揮不足,會(huì)導(dǎo)致瓦斯抽采過(guò)程中封孔材料干縮漏氣的現(xiàn)象,基于微膠囊緩控釋放原理和材料"膨脹-強(qiáng)度協(xié)調(diào)發(fā)展"機(jī)理,運(yùn)用微膠囊復(fù)合技術(shù)制得微膠囊UEA膨脹劑。借助SEM、XRD等測(cè)試手段,詳細(xì)研究了幾組水泥漿的膨脹性能。結(jié)果表明,基準(zhǔn)組發(fā)生體積收縮;膨脹劑未處理組膨脹率峰值和終值較低;潮濕環(huán)境處理組膨脹能損失較大;微膠囊處理組具有延遲膨脹現(xiàn)象,較未處理膨脹劑組延遲2.5h,膨脹率終值較膨脹劑未處理組和潮濕環(huán)境處理組分別提高3.33‰和11.06‰。
[Abstract]:In view of the deficiency of expansion energy efficiency of expansive agent in cement sealing materials, which will lead to the phenomenon of dry shrinkage and leakage of pore sealing materials during gas extraction, based on the principle of slow controlled release of microcapsules and the mechanism of "expansion and strength coordinated development". Microencapsulated UEA expander was prepared by using microcapsule composite technology. The swelling properties of several groups of cement paste were studied in detail by means of UEA. The results showed that the volume shrinkage occurred in the base group, the expansion rate of untreated group was lower than that of untreated group, and the final value of expansion agent was lower than that of untreated group. The swelling energy loss of the wet environment treatment group was larger, the microcapsule treatment group had delayed expansion phenomenon, and the final expansion rate of the microencapsulated group was 3.33 鈥，

本文編號(hào)：1576294