發(fā)布時間：2018-08-14 18:28

【摘要】：碳酸鈣、高嶺土、二氧化鈦、滑石粉等是造紙行業(yè)中常用的幾種填料。填料的使用不僅可以有效降低制造成本,同時可以改善紙張的光學(xué)性能、物理性能及書寫可適性。二氧化鈦是眾多造紙?zhí)盍现行阅茏詈玫囊环N,但因其價格昂貴,限制其使用范圍。因此制備以二氧化鈦為包覆層、以廉價無機礦物質(zhì)為內(nèi)核的復(fù)合粉體一直以來都是研究人員追求的目標。本文采用碳酸化法制備以CaCO3為沉淀層的高嶺土-碳酸鈣(Kaolin-CaCO3);以Ti02為包覆層的高嶺土-二氧化鈦(Kaolin-TiO2);以CaCO3為內(nèi)核,Ti(SO4)2為鈦源,尿素為沉淀劑,制備具有核殼結(jié)構(gòu)的碳酸鈣@二氧化鈦(CaCO3@TiO2)。并通過XRD、 FESEM、 UV、 FT-IR、 XPS等一系列檢測手段加以驗證。此外,對三種復(fù)合粉體進行漿料Zeta電位、留著率、白度等紙張性能的測試,確定最佳填料配比：Kaolin-CaCO3復(fù)合體系中,當Kaolin質(zhì)量分數(shù)介于20～60%時,填料的留著性能,紙張白度值均較好；Kaolin-TiO2復(fù)合體系中,當Kaolin質(zhì)量分數(shù)為40%時,填料留著效果最佳,紙張白度良好；對于CaCO3@Ti02復(fù)合體系,當CaCO3含量為40%時,填料留著效果與紙張白度均最佳。
[Abstract]:Calcium carbonate, kaolin, titanium dioxide and talc powder are some kinds of fillers commonly used in paper industry. The use of fillers can not only reduce the manufacturing cost, but also improve the optical, physical and writing properties of paper. Titanium dioxide (TIO _ 2) is one of the best fillers for paper making, but its application range is limited because of its high price. Therefore, the preparation of composite powders with titanium dioxide as the coating layer and cheap inorganic minerals as the core has always been the goal pursued by researchers. In this paper, Kaolin calcium carbonate (Kaolin-CaCO3) with CaCO3 as precipitating layer, kaolinite-titanium dioxide (Kaolin-TiO2) with Ti02 as coating layer and CaCO3 as core Ti (SO4) 2 as titanium source and urea as precipitant to prepare core-shell calcium carbonate @ titania (CaCO3@TiO2) were prepared by carbonation method. It is verified by XRD, FESEM, UV, FT-IRand XPS and so on. In addition, the Zeta potential, retention rate, whiteness and other paper properties of the three kinds of composite powders were tested, and the optimum filler ratio was determined. When the mass fraction of Kaolin was between 20 and 60, the retention performance of the filler was determined. In the Kaolin-TiO _ 2 composite system, when the Kaolin content is 40, the packing effect is the best and the paper whiteness is good. For the CaCO3@Ti02 composite system, when the CaCO3 content is 40, the retention effect of the filler and the whiteness of the paper are the best.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TB33;TS727

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