1) PEO/PPO composition ratio
PEO/PPO比值
1.
A series of nonionic block polyether demulsifiers with different molecular weights and PEO/PPO composition ratios were synthesized for high asphaltene crude oil in Shengli Oilfield.
本文针对胜利油田高含沥青质原油合成了一系列不同分子量和PEO/PPO比值的嵌段聚醚型破乳剂,并考察了其对高含沥青原油的破乳脱水规律。
2) PEO-PPO-PEO copolymer
PEO-PPO-PEO共聚物
3) PEO-PPO-PEO block copolymer F127
PEO-PPO-PEO三嵌段共聚物F127
1.
Ordered mesoporous alumina was synthesized by sol-gel method with isopropoxide alumina as the source of alumina and PEO-PPO-PEO block copolymer F127 as the template.
采用溶胶-凝胶法以非离子表面活性剂PEO-PPO-PEO三嵌段共聚物F127为模板剂,以异丙醇铝为铝源,以异丙醇为溶剂,成功地制备出比表面积为485m2/g、孔径分布窄(2~20nm)、孔容在1。
4) PEO-PPO-PEO block copolymer
PEO-PPO-PEO嵌段共聚物
1.
The Fourier transform infrared(FTIR) results showed that quantitative information of micelle structure of PEO-PPO-PEO block copolymer based on the effect of temperature,solvent and composition.
从分子水平研究了PEO-PPO-PEO嵌段共聚物聚集过程中分子基团微环境和构象的变化。
5) PEO PPO PEO block copolymer
PEOPPOPEO嵌段共聚物
6) PEO-PPO-PEO triblock copolymer
PEO-PPO-PEO三嵌段共聚物
1.
PEO-PPO-PEO triblock copolymer has become one of the most important templates in making mesoporous materials as a result of its excellent integrity of the arrangements of segments.
PEO-PPO-PEO三嵌段共聚物因其良好的链段排列规整性而成为制备介孔材料的最重要的模板剂之一。
补充资料：PPO
聚苯醚的化学名称聚2，6-二甲基-1,4-苯醚，是由2，6二甲酚在催化剂存在下聚合而得。相对密度1．06，玻璃化温度210℃，结晶熔融温度217℃，分解温度350 ℃，脆性温度-170℃，使用温度-l60～190℃。拉伸强度＞76MPa。有很高的机械强度，且随温度变化很小。刚硬性比尼龙、聚甲醛、聚碳酸酯高，而蠕变却最小。具有优良的耐酸、耐碱、耐沸水性。溶于二氯甲烷、二氯乙烷、氯仿、四氯化碳，不溶于乙醇、丙酮等。难燃，离火后自熄。
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参考词条