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- pentane diol 戊烷二醇
- Thermometers are filled with pentane or alcohol. 温度计盛有戊烷或酒精。
- Pentane can be used as the foamer of EPS (expandable polystyrene). 正戊烷及异戊烷可用于EPS(可发性聚苯乙烯)的发泡剂,也可作为分子筛脱蜡工艺的脱附剂。
- Polyether diol mainly adopts polytetramethylene ether glycol (PTMEG). 聚醚二醇主要采用聚四氢呋喃醚二醇(PTMEG)。
- The extractants are introduced by five parts,such as monobasic alcohol,diol,mixed alcohol,hydroxyl amine and others. 把提硼的萃取剂分为一元醇、二元醇、混合醇、羟基胺和其他类5部分加以叙述。
- The polyurethane adhesives with solvent were prepared by polyester diol,1,4-butanediol,HDI and methyl ethyl ketone. 采用聚酯二元醇、1,4丁二醇、1,6-己二异氰酸酯以及丁酮为主要原料,合成溶剂型单组分聚氨酯胶粘剂。
- Identification of retention time can be accurately obtained using a pentane peak as a standard. 可以用戊烷峰来计算其它峰的保留时间。
- There will always be enough pentane in the syringe to leave a small peak on the chromatogram. 利用适当峰的峰面积,可以计算在每一种馏份和原油中的香芹酮和柠檬烯的含量。
- Polyhexamethylene adipate diol and Polyurethane aquocmulsion based on the polyester are prepared. 以己二酸、己二醇为原料合成聚己二酸己二醇酯二醇,并制备成聚氨酯水乳液。
- It's abstracted from the gas condensate and is mainly consisted of pentane and the other heavier hydrocarbon. 从未稳定凝析油中提取的,以戊烷及更重的烃类为主要成分的油品。
- Polyurethane/epoxy blends were prepared via in-situ polymerization based on an aromatic diol. 以自制的芳香型二元醇为原料,用原位聚合的方法制备了芳香型聚氨酯/环氧树脂共混材料。
- The diol chain-extension agent is an important factor influencing the physical performance of TPU. 二醇扩链剂是影响TPU物理性能的一个重要因素。
- A method for storing natural gas with pentane from natural gas condensate as solvent was proposed in this papaer. 提出一种以凝析油戊烷为溶剂贮存天然气的方法。
- Blowing agent of F11can be substituted by pentane,which is no harm to the environment. 发泡剂F11可用符合环保要求的戊烷完全替代;
- The water-borne polyurethane was based on polyester diol,and toluene diisocyanate etc. 以聚酯多元醇、甲苯二异氰酸酯为主要原料合成了水性聚氨酯乳液。
- The effects of diol content on the dynamic mechanical properties and impact strength of the blends were investigated. 系统地研究了二元醇含量对共混材料动态力学性能、冲击性能的关系。
- Absorbed by Amberlite XAD-2 resin. Elute with ether and pentane mixture (1:1) and methanol, the bound and free aroma can isolated efficiently. Amberlite XAD-2树脂吸附,结合乙醚戊烷混合液(1:1,V/V)、甲醇的依次洗脱,可以将苹果汁(皮)中的游离态与键合态芳香组分进行有效分离。
- Ethylene gycol: thick liquid diol (a compound containing two hydroxyl groups) C2H6O2used especially as an antifreeze and in making polyester fibers. 乙二醇:较浓的液体二醇(包含两个羟基的化合物)C2H6O2,通常用作防冻剂和制造聚酯纤维。
- This paper reviewed the methods of preparing the calibration gases of pentane and isopentane and discussed the GC analysis methods. 本文论述了正戊烷、异戊烷标准气体的制备方法,并就该标准气体的气相色谱分析方法进行了探讨。
- Catalytic systems with diesters, diethers, diketones and diol esters as the internal electronic donors are newly emerging Ziegler-Natta systems. 其中,以二醚类、二酮类和二醇酯类化合物为内给电子体的催化体系是近年发展起来的新型齐格勒-纳塔催化剂体系。