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sunflower119新蟲(chóng) (初入文壇)
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[求助]
論文的中文摘要,請(qǐng)幫忙翻譯成英文,謝謝~
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| 采用雙螺桿熔融共混法制備對(duì)苯二甲酸丙二醇酯(PTT)/乙烯-醋酸乙烯共聚物(EVA)/有機(jī)蒙脫土(OMMT)復(fù)合材料。使用差示掃描量熱儀(DSC),采用修正后的Avrami方程、Ozawa法和Mo法處理其非等溫結(jié)晶過(guò)程,通過(guò)計(jì)算得出非等溫結(jié)晶的動(dòng)力學(xué)參數(shù)。結(jié)果表明:PTT/EVA/OMMT復(fù)合材料的結(jié)晶峰溫度和動(dòng)力學(xué)速率常數(shù)Zt伴著OMMT含量的提高而減小。半結(jié)晶時(shí)間t1/2隨降溫速率的增大而減小,Zt卻隨之增大,說(shuō)明該體系的結(jié)晶速率隨降溫速率的提高而提高。 |
木蟲(chóng)之王 (文學(xué)泰斗)
| Composites of poly(trimethylene terephthalate) (PTT), ethylene-vinyl acetate copolymer (EVA) and organic montmorillonite (OMMT) were prepared by melt blending in a two-screw extruder. The PTT/EVA/OMMT composites were subjected to differential scanning calorimetry (DSC) analysis. The non-isothermal crystallization process of the PTT/EVA/OMMT composites was treated by the revised Avrami equation, Ozawa method and MO method, and its kinetic parameters were calculated out. The results showed that the crystallization peak temperature and the kinetic rate constant (Zt) of the PTT/EVA/OMMT composites decreased with the increase of the OMMT content. The half crystallization time (t1/2) decreased (while Zt increased) with the increase of the cooling rate, which demonstrated that the crystallization rate increased with the increase of the cooling rate. |
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