金属有机框架材料对导电炭黑/水性聚氨酯紫外光固化涂层抗静电性能增强作用  

Enhancement of antistatic properties of conductive carbon black/waterborne polyurethane UV-curable coatings by metal-organic framework materials

作　　者：张煜 张琢 崔锡文 丁驰程 蒋莉 袁妍 ZHANG Yu;ZHANG Zhuo;CUI Xiwen;DING Chicheng;JIANG Li;YUAN Yan(School of Chemistry and Life Sciences,Suzhou University of Science and Technology,Suzhou 215009,China)

机构地区：[1]苏州科技大学化学与生命科学学院,苏州215009

出　　处：《复合材料学报》2025年第3期1425-1435,共11页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(22302139,21905048);江苏省高等学校自然科学基金(22KJB530009);江苏省自然科学基金(青年项目)(BK20230653);国家自然科学基金青年项目(22202142);苏州市产业前瞻与关键核心技术项目(SYC2022150)。

摘　　要：紫外光固化水性聚氨酯(UV-WPUA)作为绿色环保高性能的高分子涂料,适用于塑料、金属、纸张、皮革等多种基材,但是水性聚氨酯本身绝缘,随着静电荷的累积,对设备及人体产生不良影响,严重的甚至会引发爆炸火灾等危险情况,所以赋予水性聚氨酯抗静电属性成为当下热点。本研究采用导电炭黑(CB)作为UV-WPUA的导电填料,制备具有抗静电性能的紫外光固化涂料。再加入不同含量的金属有机框架材料MOF-801,进一步降低涂层的表面电阻。采用傅里叶变换红外光谱(FTIR)、核磁共振氢谱仪(1H NMR),确定UV-WPUA结构。采用扫描电子显微镜(SEM)、X射线衍射仪(XRD),确定MOF-801结构和微观形貌,以及MOF-801-CB/UV-WPUA涂层的分散性。结果表明,成功合成UV-WPUA乳液和MOF-801材料。在实验室恒温25℃,恒湿67%下,当CB质量分数为15wt%时,复合涂层表面电阻率为2.3×10^(6)Ω。当在此涂料中加入1wt%的MOF-801,涂层表面电阻率下降至1.7×10^(5)Ω,且涂层硬度、附着力较好,双键转化率为70%,满足抗静电涂料的要求,证明金属有机框架材料的加入可以进一步提升紫外光固化涂层的抗静电性能。UV curable waterborne polyurethane(UV-WPUA)is a green,environmentally friendly,efficient and high performance polymer coating suitable for a wide range of substrates such as plastics,metals,paper,leather and so on.However,waterborne polyurethane itself is insulated,and with the accumulation of static charges,it can have adverse effects on equipment and human health,and even cause dangerous situations such as explosions and fires.Therefore,endowing waterborne polyurethane with anti-static properties has become a current hot topic.This study used conductive carbon black(CB)as a conductive filler for UV-WPUA to prepare UV curable coatings with anti-static properties.The surface resistivity of the coating can be further reduced by adding MOF-801,an organic framework material with varying levels of content.Fourier transform infrared spectroscopy(FTIR)and nuclear magnetic resonance(1H NMR)were used to determine the structure of UV-WPUA.Scanning electron microscopy(SEM)and X-ray diffraction(XRD)were used to determine the structure and microscopic morphology of MOF-801 and the dispersion of the MOF-801-CB/UV-WPUA coating.The results showed that the experiments were successful in synthesising UV-WPUA emulsion and MOF-801 materials.Under the constant temperature of 25℃and humidity of 67%in the laboratory,the surface resistivity of the coating was 2.3×10^(6)Ωwhen the mass content of CB was 15wt%.When 1wt%MOF-801 is added to this coating,the surface resistivity of the coating decreases to 1.7×10^(5)Ω,the conversion of double bond is 70%,and the coating has good hardness and adhesion,meeting the requirements of antistatic coatings.It can be demonstrated that the addition of organic framework materials can further improve the antistatic performance of UV-cured coatings.

关 键 词：紫外光固化水性聚氨酯 MOF-801 导电炭黑 抗静电 涂料 

分 类 号：TB332[一般工业技术—材料科学与工程]