Preparation of Isobutyl Vinyl Ether by Acetylene Continuous Liquid Phase Reaction under High Pressure

异丁基乙烯基醚是一种重要的聚合物单体和有机合成中间体，广泛应用于油墨、涂料、粘合剂、增塑剂和润滑剂等方面。乙炔法是制备异丁基乙烯基醚的常用方法，其中高压下乙炔连续液相均相反应过程中无气相乙炔循环，传质传热速率快，能耗低，操作安全性高。乙炔在醇中的溶解度数据对于乙炔法制备乙烯基醚的工艺过程具有重要指导意义。 本文采用等容饱和法研究了乙炔在七种醇溶剂中的溶解度，并利用相关方程计算亨利常数和溶液的偏摩尔焓变和偏摩尔熵变。具体探究了溶解温度、压力对乙炔溶解度的影响，以及乙炔在异丁醇中的溶解特性，为后续研究制备异丁基乙烯基醚奠定基础。乙炔在本文选用的七种醇溶剂中的溶解度均随温度升高而下降；在0.1~0...Isobutyl vinyl ether is an important polymer monomer and organic synthesis intermediate, widely used in inks, coatings, adhesives, plasticizers, lubricants and so on. Acetylene methods are the most commonly used methods for preparing isobutyl vinyl ether. Among them, a continuous process for acetylene reaction in homogeneous liquid phase under high pressure is very promising. In this process, all ...学位：工学硕士院系专业：化学化工学院_工程硕士(化学工程)学号：2062013115148

Selection of Antifouling Coatings for Polyethylene Fiber Netting

【目的】对聚乙烯类渔网防污涂料的柔韧性和附着性能进行表征评价。【方法】从8种基体树脂中筛选出3种柔韧性和附着性能表现良好的树脂:丙烯酸树脂、氯醚树脂MP25和氯醚树脂MP45,并使用前两种树脂制备出3种适用于聚乙烯类渔网的防污涂料(编号Ⅰ、Ⅱ、Ⅲ),然后采用浸涂法对聚乙烯类渔网进行涂装并实海挂网,最后利用扫描电镜对渔网涂膜进行表征。【结果】氯醚树脂MP25作为基体树脂所制备的防污涂料在聚乙烯类渔网上的附着力与柔韧性均较好。【结论】扫描电镜可以对聚乙烯类渔网防污涂料进行筛选并对其性能进行表征;氯醚树脂MP25是制备聚乙烯类渔网防污涂料较理想的茎体树脂。【Objective】To assess tensile strength and adhesions of antifouling coatings for polyethylene fiber netting.【Methods】3out of 8resins with proper tensile strength and adhesions were screened,which are acrylic resin,chlorinated polyether resin MP25 and chlorinated polyether resin MP45.Acrylic resin and chlorinated polyether risin MP25 were used to produce antifouling coatingsⅠ,ⅡandⅢ.Polyethylene fiber fish nets were painted through dip coating and were submerged in seawater.The fish nets films was assessed by scanning electron microscopy(SEM).【Results】Assessment results showed that chlorinated polyether resin MP25 was a better film forming material for antifouling coatings.【Conclusion】SEM could screen out proper antifouling coatings for polyethylene fiber netting and assess its performance

An Investigation on Poly(Vinyl Chloride-Co-Isobutyl Vinyl Ether) Coatings Modified by Rutile Nano-TiO_2 Pastes

用金红石型纳米TiO2对氯醚树脂防腐涂料改性,电化学阻抗考察该纳米TiO2对漆膜防腐性能的影响.结果表明,添加金红石型纳米TiO2不能明显改善氯醚树脂漆膜的附着力、柔韧性和耐冲击性能,但能提高漆膜耐紫外线老化,以及漆膜的光泽度,此外适当的添加量还能提高漆膜的防腐性能.The anti-corrosion coating of Poly(Vinyl Chloride-Co-Isobutyl Vinyl Ether)(PVCCIVE) was modified by rutile nano-TiO_(2).The influence of nano-TiO_(2) pastes on the coating's corrosion resistance was investigated through electrochemistry impedance spectroscopy(EIS).The results show that the addition of nano-TiO_(2) pastes does not have obvious effect on the coating's performance of adhesion,flexility,impact resistance,but improves the coating's UV resistance and the gloss.Meanwhile,with the proper addition of rutile nano-TiO_(2) pastes,the(anti)-corrosion behavior of the coating was advanced.作者联系地址：重庆大学化学化工学院,重庆大学化学化工学院,中科院海洋研究所,中科院海洋研究所 重庆400044,重庆400044,山东青岛266071,山东青岛266071Author's Address: *1,ZHANG Sheng-tao~1,LI Yan~2,HOU Bao-rong~21.College of Chemistry & Chemical Engineering,Chongqing University,Chongqing 400044,China,2.Institute of Oceanology,Chinese science of Academy,Qingdao 266071,Chin