Preparation of LLDPE Fractions With Different Crystallinity via Temperature Rising Elution Fractionation;
升温淋洗分级制备不同结晶度LLDPE的研究
Temperature rising elution fractionation(TREF) could be used to separate polymers into fractions according to the difference of their crystallization abilities and obtain structure information of semi-crystalline polymers by further characterization of these fractions.
利用升温淋洗分级技术(TREF),可根据结晶特性的不同将高分子分离成多个分布较窄的级份,通过分别表征各级份的链结构,从而可获得高分子链结构方面较为准确的信息。
Temperature rising elution fractionation(TREF) is an analytical and preparative technology for fractionation and characterization of polymers based on crystallinity.
升温淋洗分级技术是根据结晶性聚合物的结晶度进行分级和表征的一项分析和制备技术 ,在聚烯烃非均匀性的表征和窄组成分布样品的制备中有重要应用。
Antioxidant effects of ethanol eluting fractions from Oenothera drummondii leaf extract;
海边月见草叶提取物乙醇洗脱级分的抗氧化作用
However,the hematite slurry after washing classification is difficult to filtration.
进口巴西和澳大利亚块状赤铁矿含有较多细泥,造成高炉透气性差,影响高炉利用系数,采用水洗分级工艺可以解决这一问题,但水洗矿浆过滤难度很大,本文通过试验研究,提出了对水洗矿浆进行浓缩、絮凝、过滤脱水的可行性方案。