反渗透膜仓用韧性环氧树脂基体研究  

Study on Toughened Epoxy Resins Matrix of Inner Pressure Vessels for Reverse Osmosis

作　　者：周文英[1] 齐暑华[1] 涂春潮[1] 杨辉[1] 

机构地区：[1]西北工业大学理学院应用化学系,陕西西安710072

出　　处：《西北工业大学学报》2005年第3期365-368,共4页Journal of Northwestern Polytechnical University

摘　　要：工业上广泛使用反渗透膜仓制备高纯水,为了用玻璃钢替代不锈钢,研究了一种适合湿法缠绕的反渗透膜仓用韧性环氧基体。在配方中采用液体酸酐固化剂甲基四氢邻苯二甲酸酐和高效活性增韧剂,对树脂基体和复合材料力学性能及耐水性能的研究表明该树脂基体具有许多优良性能,如拉伸强度≥86.2MPa,断裂延伸率≥5.2%,弯曲强度≥139MPa,制得膜仓爆破时纤维强度转化率高达88.7%,耐疲劳达10万次而无损伤。此外,配方体系室温下粘度为0.35～0.4Pa·s,适用期≥8h,室温下在水中浸泡180d后吸水率低于0.5%,同不锈钢相比成本降低1/2。实验结果表明,该韧性环氧基体完全适用于反渗透膜仓使用。In order to replace the stainless steel with epoxy composites in the inner high pressure vessels for reverse osmosis which is used to produce highly purified water, a toughened epoxy resins matrix, which is suitable for the wet-winding of glass fiber composite, was studied. The curing agent MeTHPA and a highly effective reactive toughening agent were used in the formulation. We studied the mechanical and water-resistance properties of casting parts and glass fiber composite systematically, and the results show that the formulation for the toughened epoxy resins matrix possesses good properties: tensile strength ≥ 86.2 MPa, bend strength ≥ 139 MPa, elongation at broken point ≥ 5.2%. The strength conversion ratio of the glass fiber reaches as high as 88.7%, and fatigue resistance is 100000 times without any damage. In addition, the formulation has lower viscosity (0.35-0.4 Pa&middots) and longer lifetime (≥ 8 h) at the room temperature; content of water is less than 0.5% when dipped in water after 180 d; and the cost of the toughened epoxy based composites is just half of that of the stainless steel. The experimental results prove that the toughened epoxy system is very suitable for use in the equipment for reverse osmosis.

关 键 词：反渗透膜仓 环氧树脂 湿法缠绕 耐水性能 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业] TQ320.669