| THE STUDY ON MECHANISM OF BINDER MIGRATION DURING COATING PROCESS |
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| 作者姓名： | Yun Liang College of Material Science & Eng.South China Univ. of Tech. Guangzhou ChinaKefu ChenThe State Key Lab. Of Pulp & Paper Eng.South China Univ. of Tech. Guangzhou China |
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| 作者单位： | Yun Liang College of Material Science & Eng.South China Univ. of Tech.，Guangzhou，ChinaKefu ChenThe State Key Lab. Of Pulp & Paper Eng.South China Univ. of Tech.，Guangzhou，China |
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| 摘 要： | INTRODUCTIONBinders are the second most abundant component in the coating color after the pigment. Binders are added into coating colors to fulfill the following purposes, binding of pigment particles to each other, binding of pigment particles to base paper, adjusting of ink absorption, protecting of colloid, affecting stability and flowability of coating color 1]. Unlike uniform distribution in well prepared coating color suspension, binder distribution is nonuniform along the cross sec…
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THE STUDY ON MECHANISM OF BINDER MIGRATION DURING COATING PROCESS |
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| Yun Liang College of Material Science & Eng.South China Univ. of Tech.,Guangzhou,ChinaKefu ChenThe State Key Lab. Of Pulp & Paper Eng.South China Univ. of Tech.,Guangzhou,China.THE STUDY ON MECHANISM OF BINDER MIGRATION DURING COATING PROCESS[J].Journal of Tianjin University of Science & Technology,2004,19(Z1). |
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| Authors: | Yun Liang Kefu Chen |
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| Abstract: | Binder migration during coating process and the mechanism of binder migration were studied in this paper. After the latex was tagged by osmium, the degree of binder migration was measured by energy-dispersive X-ray spectrometer. For the wet sample just after coating application, the real information of binder distribution was kept by quenching the sample in liquid nitrogen followed by freeze-drying. The results showed: under the condition of this research, binder migration occurred both in the process of coating application and drying. But the amount of binder migration occurred during coating application was much little than that occurred during drying. The mechanism of binder migration during the process of coating application was studied by force analyses. And one viewpoint was proposed that was binder migration was caused by Magnus force and Saffman force. |
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| Keywords: | coating process binder migration mechanism |
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