微波法促進(jìn)氧化鋅晶體在塑料表面的附著性能的研究
發(fā)布時(shí)間：2019-05-22 23:40
【摘要】：ZnO由于其本身的特性引起了人們的重視,并且已經(jīng)廣泛應(yīng)用于化工、醫(yī)療等各個(gè)行業(yè)。但傳統(tǒng)對(duì)ZnO的加工方式需要經(jīng)較長的反應(yīng)周期和高溫灼燒,并不適應(yīng)高分子材料的加工。而微波作為一種新的加工方式,可以在不影響高分子材料自身性質(zhì)的條件下完成ZnO在其表面的結(jié)晶。實(shí)驗(yàn)采用微波方法在低密度聚乙烯(LDPE)、馬來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)和聚對(duì)苯二甲酸乙二醇酯(PET)表面使ZnO進(jìn)行結(jié)晶,并且進(jìn)一步研究了影響其結(jié)晶的因素。實(shí)驗(yàn)通過控制配方中鋅離子濃度,微波反應(yīng)時(shí)間,材料表面粗糙度來驗(yàn)證在不同條件下ZnO的生成情況。同時(shí)還對(duì)比了LDPE與LDPE-g-MAH兩種材料對(duì)ZnO生成的影響,用來分析引入新的基團(tuán),改變材料的極性對(duì)ZnO在材料表面結(jié)晶是否有影響。實(shí)驗(yàn)中使用了X射線衍射(XRD),掃描電鏡(SEM),接觸角,透光率和單位表面積上附著的質(zhì)量來表征其性質(zhì)。實(shí)驗(yàn)表明,采用微波法可以在短時(shí)間內(nèi)(2min),高效的誘導(dǎo)ZnO在材料表面進(jìn)行生長。在結(jié)晶形態(tài)上,濃度較低或反應(yīng)時(shí)間較短時(shí)ZnO呈現(xiàn)出花瓣?duì)?而當(dāng)濃度較大時(shí)則呈現(xiàn)柱狀。同時(shí),當(dāng)濃度較大或處理時(shí)間較長時(shí)ZnO附著的質(zhì)量和接觸角都呈現(xiàn)增大的趨勢(shì),且材料的透光率呈現(xiàn)下降的趨勢(shì)。材料表面粗糙度也對(duì)ZnO的生成有著一定影響,在相同鋅離子濃度和微波處理時(shí)間條件下,表面越粗糙的樣品,ZnO生成的質(zhì)量越大,接觸角越大。文章中還比較了LDPE和LDPE-g-MAH對(duì)ZnO生成的影響,結(jié)果顯示接枝后的材料對(duì)ZnO的生成有促進(jìn)作用。因此,采用微波法促進(jìn)ZnO生長,需要綜合考慮材料的性質(zhì),反應(yīng)時(shí)間,預(yù)聚物中鋅離子濃度與材料表面粗糙度。
[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.
【學(xué)位授予單位】：天津科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TB306
本文編號(hào)：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.
【學(xué)位授予單位】：天津科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TB306
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