發(fā)布時間：2018-04-03 03:34

  本文選題：甲基丙烯酸甲酯-丙烯酸甲酯共聚物　切入點：石蠟　出處：《功能材料》2014年19期

【摘要】：以甲基丙烯酸甲酯-丙烯酸甲酯共聚物P(MMA-co-MA)為壁材,以石蠟為芯材,采用乳液聚合法制備了適用于建筑圍護結(jié)構(gòu)的相變材料微膠囊(MEPCM)。利用掃描電鏡(SEM)、差示掃描量熱儀(DSC)、傅里葉紅外光譜(FT-IR)、熱重分析儀(TGA)、激光粒度分析儀對產(chǎn)品的表面形貌、熱物理性能、化學(xué)結(jié)構(gòu)、粒徑等進行了表征。探討了十二烷基硫酸鈉(SDS)、十二烷基苯磺酸鈉(SDBS)、十六烷基三甲基溴化銨(CTMAB)、辛烷基酚聚氧乙烯醚-10(OP-10)對微膠囊形貌的影響。結(jié)果表明,以O(shè)P-10為乳化劑,芯殼質(zhì)量比為1.2∶1時,可獲得平均粒徑為252.17 nm,相變溫度為25.12℃,焓值為61.28 J/g,包裹率為71.29%,表面規(guī)整均一的球形微膠囊。產(chǎn)物相變溫度處于人體舒適范圍內(nèi),且相變焓值較大,適用于建筑節(jié)能。
[Abstract]:Using methyl methacrylate / methyl acrylate copolymers as wall materials and paraffin as core materials, phase change materials (PCMs) were prepared by emulsion polymerization.Scanning electron microscopy (SEM), differential scanning calorimeter (DSC), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analyzer (TGA), laser particle size analyzer (LPA) were used to characterize the surface morphology, thermal physical properties, chemical structure and particle size of the product.The effects of sodium dodecyl sulfate (SDS), sodium dodecylbenzenesulfonate (SDBS), cetyltrimethylammonium bromide (CTMAB), octanyl phenol polyoxyethylene ether (OP-10) on the morphology of microcapsules were investigated.The results show that when OP-10 is used as emulsifier and the core-shell mass ratio is 1.2: 1, the spherical microcapsules with average particle size of 252.17 nm, phase transition temperature of 25.12 鈩，

本文編號：1703466