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- Keywords durene;pyromellitic acid dianhydride;polyimide; 均四甲苯;均苯四甲酸二酐;聚酰亚胺;
- Keywords pyromellitic acid dianhydride;polyimide;synthesis;characterization; 均苯四甲酸二酐;聚酰亚胺;制备;表征;
- Keywords Pyromellitic acid dianhydride;collecting;condensing mode;air phase oxidation;desublimated equipment; 均苯四甲酸二酐;捕集;冷凝态;气相氧化法;凝华换热器;
- pyromellitic acid dianhydride 均苯四酸二酐
- The effects of 1, 2, 4, 5-benzenetetracarboxylic acid dianhydride introduced during the esterification process were also investigated. 同时研究了酯化过程中引入的均苯四酸二酐的作用。
- cyclopentane tetracarboxylic acid dianhydride 环戊烷四甲酸二酐
- perylene-3,4,9,10-tetracarboxylic acid dianhydride [化] ╀四酸二酐; ╀四甲酸二酐
- Recovery and Determination of Pyromellitic Acid in Wastewater 废水中均苯四甲酸的回收与测定
- Keywords Pyromellitic acid terbium calcium fluorescene spectrum; 铽;钙;均苯四甲酸;荧光光谱;
- Keywords Pyromellitic acid;Europium;Zinc;Chelates;Fluorescence specturm; 均苯四甲酸;铕;锌;配合物;荧光光谱;
- A series of poly(amic acid)s based on pyromellitic dianhydride (PMDA) and oxydiphthalic tetracarboxylic dianhydride (ODPA) was prepared in different solvents. 在不同溶剂中合成了一系列均苯二酐 ( PMDA)型和二苯醚二酐 ( ODPA)型聚酰胺酸 ( PAA) .
- A new ketone resin is prepared from residuum of cyclohexanone rectification and formaldehyde with compound acid as catalyst,it is modified with pyromellitic dianhydride. 以环己酮精馏残渣和甲醛为原料,用复合酸作催化剂,通过均苯四甲酸酐改性,合成一种新的酮树脂。
- Based on 26B4APBN monomer,polyamic acid was obtained by polymerization with pyromellitic dianhydride(PMDA),and further imidized into polyimide(PI) film by heating process. 由二胺单体和均苯四甲酸二酐(PMDA)进行聚合得到26B4APBN/PMDA聚酰胺酸,再经热亚胺化得到聚酰亚胺薄膜;
- He gave me a taste of his acid wit. 他让我尝到了他敏锐尖刻之机智的滋味。
- Acid irritates the stomach lining. 酸能刺激胃黏膜。
- Acid had pitted the surface of the silver. 酸把银器的表面腐蚀了。
- Synthesis and Crystal Structure of the 1:1 Complex of Pyromellitic Acid with Erbium 1,2,4,5-苯四甲酸铒配合物的合成及其晶体结构
- Taking pyromellitic dianhydride and thionyl chloride as raw key material, 2,5-bis(methoxycarbonyl)terephthaloyl chloride was synthesized. 以氯化亚矾及均苯四甲酸酐为主要原料通过酰氯法合成了对位均苯二甲酯二酰氯。
- The poly(urethane-imide) (PUI) which uses isophorone diisocyanate, dispersed red 19 (DR-19), and pyromellitic dianhydride is synthesized. 以异佛尔酮二异氰酸酯,分散红-19和均苯四甲酸二酐合成聚氨酯-酰亚胺(PUI);
- I am doing an experiment of neutralizing acid. 我在做一个中和酸的实验。