微波法促进氧化锌晶体在塑料表面的附着性能的研究
发布时间：2019-05-22 23:40
【摘要】：ZnO由于其本身的特性引起了人们的重视,并且已经广泛应用于化工、医疗等各个行业。但传统对ZnO的加工方式需要经较长的反应周期和高温灼烧,并不适应高分子材料的加工。而微波作为一种新的加工方式,可以在不影响高分子材料自身性质的条件下完成ZnO在其表面的结晶。实验采用微波方法在低密度聚乙烯(LDPE)、马来酸酐接枝低密度聚乙烯(LDPE-g-MAH)、苯乙烯-丁二烯-丙烯腈共聚物(ABS)和聚对苯二甲酸乙二醇酯(PET)表面使ZnO进行结晶,并且进一步研究了影响其结晶的因素。实验通过控制配方中锌离子浓度,微波反应时间,材料表面粗糙度来验证在不同条件下ZnO的生成情况。同时还对比了LDPE与LDPE-g-MAH两种材料对ZnO生成的影响,用来分析引入新的基团,改变材料的极性对ZnO在材料表面结晶是否有影响。实验中使用了X射线衍射(XRD),扫描电镜(SEM),接触角,透光率和单位表面积上附着的质量来表征其性质。实验表明,采用微波法可以在短时间内(2min),高效的诱导ZnO在材料表面进行生长。在结晶形态上,浓度较低或反应时间较短时ZnO呈现出花瓣状,而当浓度较大时则呈现柱状。同时,当浓度较大或处理时间较长时ZnO附着的质量和接触角都呈现增大的趋势,且材料的透光率呈现下降的趋势。材料表面粗糙度也对ZnO的生成有着一定影响,在相同锌离子浓度和微波处理时间条件下,表面越粗糙的样品,ZnO生成的质量越大,接触角越大。文章中还比较了LDPE和LDPE-g-MAH对ZnO生成的影响,结果显示接枝后的材料对ZnO的生成有促进作用。因此,采用微波法促进ZnO生长,需要综合考虑材料的性质,反应时间,预聚物中锌离子浓度与材料表面粗糙度。
[Abstract]:ZnO has attracted people's attention because of its own characteristics, and has been widely used in chemical, medical and other industries. However, the traditional processing of ZnO needs a long reaction cycle and high temperature burning, which is not suitable for the processing of polymer materials. As a new processing method, microwave can complete the crystallization of ZnO on its surface without affecting the properties of polymer materials. Low density polyethylene (LDPE-g-MAH) was graft onto low density polyethylene (LDPE-g-MAH) by microwave method. Styrene-Butadiene-Acrylonitrile Copolymer (ABS) and Poly (ethylene terephthalate) (PET) (polyethylene terephthalate) were used to crystallization ZnO, and the factors affecting the crystallization were further studied. The formation of ZnO under different conditions was verified by controlling the concentration of zinc ion, microwave reaction time and surface roughness of the material. At the same time, the effects of LDPE and LDPE-g-MAH on the formation of ZnO were compared to analyze whether the introduction of new groups and the change of polarity of the materials had an effect on the crystallization of ZnO on the surface of the material. X-ray diffraction (XRD), scanning electron microscope (SEM), contact angle, transmittance and adhesion mass per unit surface area were used to characterize its properties. The experimental results show that ZnO can be efficiently induced to grow on the surface of the material in a short time (2min) by microwave method. In the crystallization morphology, ZnO showed petal shape when the concentration was low or the reaction time was short time, but columnar when the concentration was high. At the same time, the adhesion mass and contact angle of ZnO increased when the concentration was high or the treatment time was long, and the transmittance of the material showed a downward trend. The surface roughness of the material also has a certain effect on the formation of ZnO. Under the same zinc ion concentration and microwave treatment time, the rougher the surface, the greater the mass and contact angle of ZnO. The effects of LDPE and LDPE-g-MAH on the formation of ZnO were also compared. the results showed that the grafting materials could promote the formation of ZnO. Therefore, to promote the growth of ZnO by microwave method, it is necessary to consider the properties of the material, the reaction time, the concentration of zinc ion in the prepolymer and the surface roughness of the material.
【学位授予单位】：天津科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB306
本文编号：2483382
[Abstract]:ZnO has attracted people's attention because of its own characteristics, and has been widely used in chemical, medical and other industries. However, the traditional processing of ZnO needs a long reaction cycle and high temperature burning, which is not suitable for the processing of polymer materials. As a new processing method, microwave can complete the crystallization of ZnO on its surface without affecting the properties of polymer materials. Low density polyethylene (LDPE-g-MAH) was graft onto low density polyethylene (LDPE-g-MAH) by microwave method. Styrene-Butadiene-Acrylonitrile Copolymer (ABS) and Poly (ethylene terephthalate) (PET) (polyethylene terephthalate) were used to crystallization ZnO, and the factors affecting the crystallization were further studied. The formation of ZnO under different conditions was verified by controlling the concentration of zinc ion, microwave reaction time and surface roughness of the material. At the same time, the effects of LDPE and LDPE-g-MAH on the formation of ZnO were compared to analyze whether the introduction of new groups and the change of polarity of the materials had an effect on the crystallization of ZnO on the surface of the material. X-ray diffraction (XRD), scanning electron microscope (SEM), contact angle, transmittance and adhesion mass per unit surface area were used to characterize its properties. The experimental results show that ZnO can be efficiently induced to grow on the surface of the material in a short time (2min) by microwave method. In the crystallization morphology, ZnO showed petal shape when the concentration was low or the reaction time was short time, but columnar when the concentration was high. At the same time, the adhesion mass and contact angle of ZnO increased when the concentration was high or the treatment time was long, and the transmittance of the material showed a downward trend. The surface roughness of the material also has a certain effect on the formation of ZnO. Under the same zinc ion concentration and microwave treatment time, the rougher the surface, the greater the mass and contact angle of ZnO. The effects of LDPE and LDPE-g-MAH on the formation of ZnO were also compared. the results showed that the grafting materials could promote the formation of ZnO. Therefore, to promote the growth of ZnO by microwave method, it is necessary to consider the properties of the material, the reaction time, the concentration of zinc ion in the prepolymer and the surface roughness of the material.
【学位授予单位】：天津科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB306
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