摘要
通过高速球磨与硅烷偶联剂KH560及环氧树脂接枝的物理-化学结合法处理2 500目的钛粉,得到纳米钛改性聚合物,利用重力沉降法和质量法测试了它的分散性。当以球料比4∶1和转速700 r/min球磨4 h,以及KH560的使用量为钛粉质量的1.0%时,所得纳米钛改性聚合物的分散性最好。纳米钛改性聚合物在离心烘干后有明显的分层。根据X射线衍射和热重分析的测试结果推断,离心管最上层的物质才是目标产物。以改性较好的纳米钛聚合物作为原料,与环氧树脂及其固化剂一起在马口铁上制备了涂层。当纳米钛改性聚合物含量为8.0%(质量分数,后同),消泡剂、流平剂和润湿分散剂分别为0.1%、0.2%和0.5%时,所制环氧涂层的力学性能和耐腐蚀性能最好。
Titanium powder with a mesh size of 2 500 was treated by physical method (i.e. ball milling at a high speed) combined with chemical method (i.e. grafting to epoxy resin through silane coupling agent KH560), and a nano-titanium- modified polymer was then obtained. Its dispersibility was tested by gravitational sedimentation and weighing method. The nano-titanium-modified polymer produced via ball milling at a ball-to-powder ratio of 4:1 and a speed of 700 r/min for 4 h and modification by 1.0% (with respect to the mass of titanium powder) of KH560 has the optimal dispersibility, but is divided into layers after centrifugation and drying. According to the results of X-ray diffraction and thermogravimetric analysis, it is inferred that the matter at the top of centrifuge tube is the target product. The nano-titanium-modified polymer was used to prepare coatings with epoxy resin and its curing agent on tinplates. The epoxy coating prepared with nano-titanium-modified polymer 8.0wt.%, defoamer 0.1wt.%, leveling agent 0.2wt.%, and wetting agent 0.5wt% has the best mechanical properties and corrosion resistance.
出处
《电镀与涂饰》
CAS
CSCD
北大核心
2018年第2期46-53,共8页
Electroplating & Finishing
基金
山东省重点研发计划(2016GGB01985)
山东省自然科学基金(ZR2016EMB20)
关键词
纳米钛
环氧树脂
改性
硅烷偶联剂
球磨
耐蚀性
力学性能
nano-titanium
epoxy resin
ball milling
modification
silane coupling agent
corrosion resistance
mechanical property