纳米Fe_(3)O_(4)/超支化水性聚氨酯的制备及性能研究  

Study on preparation and properties of nano-Fe_(3)O_(4)/hyperbranched waterborne polyurethane

作　　者：赵欣[1] ZHAO Xin(Shaanxi Institute of Technology,Xi'an 710300,China)

机构地区：[1]陕西国防工业职业技术学院,陕西西安710300

出　　处：《化学工程师》2024年第7期107-110,共4页Chemical Engineer

摘　　要：采用γ-甲基丙烯酰氧基丙基三甲氧基硅烷(KH570)对纳米Fe_(3)O_(4)表面改性并将其引入经亲水改性的含不饱和双键的端羟基超支化聚酯(BoltornTMH_(2)0)中,加入光引发剂后经紫外光照射得到Fe_(3)O_(4)复合超支化水性聚氨酯(Fe_(3)O_(4)/WHBPU)固化膜,采用红外光谱(FTIR)、X-射线衍射(XRD)对其结构进行表征分析,利用振动样品磁强计(VEM)和万能试验机对其磁性能和机械性能进行测试。结果表明,Fe_(3)O_(4)/WHBPUA具有良好的超顺磁性,其硬度、抗拉强度、断裂伸长率和杨氏模量分别为3H、31.88MPa、91.51%、335.78MPa,相较于未引入Fe_(3)O_(4)粒子的WHBPU提升了约100%。In this paper,nano-Fe_(3)O_(4) modified byγ-methacryloxypropyltrimethoxysilane(KH570)was introduced into hydrophilic-modified end-hydroxyl hyperbranched containing unsaturated double bonds(Boltorn TMH_(2)0)to obbtain nano-Fe_(3)O_(4) composite hyperbranched waterborne polyurethane curing film by adding photoinitiator and UV irradiation.The structure,magnetic properties and mechanical properties of the products were analyzed by FTIR,XRD and VEM.The results showed that the prepared nano-Fe_(3)O_(4) composite hyperbranched waterborne polyurethane had good superparamagnetism.The hardness,tensile strength,elongation at break and Young's modulus were 3H,31.88MPa,91.51%and 335.78MPa,respectively,which was about 100%higher than that of hyperbranched waterborne polyurethane without nano-Fe_(3)O_(4) particles.

关 键 词：聚氨酯 超支化 纳米四氧化三铁 机械性能 

分 类 号：TQ050.43[化学工程]