(54)发明名称衍生自6FDA-DAM型均聚聚酰亚胺的芳族共聚聚酰亚胺气体分离膜(57)摘要用于分离含硫天然气的组分的共聚聚酰亚胺膜包含至少三种聚合在一起的不同部分,这些部分包括基于2,2'‑双(3,4‑二羧基苯基)六氟丙烷二酐(6FDA)的部分;基于2,4,6‑三甲基‑间苯二胺(DAM)的部分;和选自由以下部分组成的组...
dam/6fpda(毫摩尔dam:毫摩尔6fpda为1:3)的co2/ch4和h2s/ch4理想选择性分别为29和19;同时co2和h2s的渗透性分别为80barrer和50barrer。类似地,无规共聚聚酰亚胺6fda ‑ dam/cardo(毫摩尔dam:毫摩尔cardo为1:3)的co2/ch4和h2s/ch4理想选择性分别为19和21,同时co2和h2s渗透性分别为48barrer和51barrer。 16.与...
13.根据权利要求9所述的膜,其中所述嵌段共聚物包含聚合物嵌段长度为L的所述基于6FDA的部分和所述基于DAM的部分,并且包含聚合物嵌段长度为M的所述基于6FDA的部分和所述基于6FpDA的部分,并且L与M的嵌段长度比在(1,000-20,000)比(1,000-20,000)之间。 14.根据权利要求9所述的膜,其中所述嵌段共聚物包含聚合物...
14.根据权利要求9所述的膜,其中所述嵌段共聚物包含聚合物嵌段长度为l的所述基于6fda的部分和所述基于dam的部分,并且包含聚合物嵌段长度为m的所述基于6fda的部分和所述基于cardo的部分,并且l与m的嵌段长度比在(1,000 ‑ 20,000)比(1,000 ‑ 20,000)之间。15.根据权利要求9所述的膜,其中所述嵌段共聚物包...
最近模仿一位大佬的文献做6FDA-DAM，大佬又是按照美国一个专利做的，大佬做出来的分子量有165000，而我...
Permeation of mixtures of butane isomers through 6FDA-DAM (2,2-bis(3,4-carboxyphenyl) hexafluoropropane dianhydride鈥揹iaminomesitylene) dense films is shown to deviate from the dual-mode transport model, even if one accounts for nonideal bulk flow effects. Two hypotheses are proposed to explain...
Mixed matrix films were successfully fabricated using a 6FDA–DAM as the matrix, with up to 35 wt% loading of MFI, modified by a two-step Grignard treatment (GT) that produced Mg(OH)2 whiskers on the surface of the MFI particles. The permeability of nC4 more than doubled; however, ...
用于分离含硫天然气的组分的共聚聚酰亚胺膜包含至少三种聚合在一起的不同部分,这些部分包括基于2,2'双(3,4二羧基苯基)六氟丙烷二酐(6FDA)的部分;基于2,4,6三甲基间苯二胺(DAM)的部分;和选自由以下部分组成的组中的至少一种组分:基于的4,4'(六氟异亚丙基)二苯胺(6FpDA)的部分;基于9,9双(4氨基苯基)芴...
Mixed matrix membranes (MMMs) can significantly improve gas separation performance, but the type and state of the filler in the membrane matrix are key indicators for the development of MMMs. Therefore, in this work, 6FDA-DAM/ODA (1:1), metal鈥搊rganic frameworks (MOFs) with different ...
In this work, for the first time, ZIF-301 was incorporated into 6FDA-DAM polyimide to fabricate MMMs that was explored for the application in natural gas purification (Fig. 1). By utilizing the preferential CO2 sorption and aperture molecular sieving effect of the ZIF-301 filler, the selective...