中华纸业
中華紙業
중화지업
China Pulp & Paper Industry
2015年
20期
68-71
,共4页
颜料%硫酸钙%涂布纸%亮度%白度
顏料%硫痠鈣%塗佈紙%亮度%白度
안료%류산개%도포지%량도%백도
pigment%calcium sulfate%coated paper%brightness%whiteness
在过去的几年间，人们对于高亮度纸的关注和需求已经驱使造纸厂家探寻新的方法来提高涂布纸的亮度和白度。用以提高纸和纸板光学性能（如亮度、白度和光泽度）的颜料涂布得到广泛应用。这些光学性质对于最终使用者非常重要，同时也决定了涂布纸的最终成本。相比于其它的常规颜料，如重质碳酸钙、沉淀碳酸钙和高岭土，硫酸钙具有固有的更好的光学性能。本研究的目的是利用从磷酸厂购得的废弃物合成硫酸钙，并研究它对涂料的流变性以及对涂布纸光学性能的影响。加入硫酸钙可以提高涂层的保水性，这对于改善运行性能是很有帮助的。结果还表明，将硫酸钙用作颜料，可以生产出高亮度和高白度的涂布纸。在涂料配方里，用50份的硫酸钙代替高岭土，涂布纸的亮度和白度可以分别提高4%和15%。研究表明，使用硫酸钙作为颜料，涂布纸板I GT印刷粘着性能的表面强度很高，印刷光泽度与无光泽涂布纸相似。
在過去的幾年間，人們對于高亮度紙的關註和需求已經驅使造紙廠傢探尋新的方法來提高塗佈紙的亮度和白度。用以提高紙和紙闆光學性能（如亮度、白度和光澤度）的顏料塗佈得到廣汎應用。這些光學性質對于最終使用者非常重要，同時也決定瞭塗佈紙的最終成本。相比于其它的常規顏料，如重質碳痠鈣、沉澱碳痠鈣和高嶺土，硫痠鈣具有固有的更好的光學性能。本研究的目的是利用從燐痠廠購得的廢棄物閤成硫痠鈣，併研究它對塗料的流變性以及對塗佈紙光學性能的影響。加入硫痠鈣可以提高塗層的保水性，這對于改善運行性能是很有幫助的。結果還錶明，將硫痠鈣用作顏料，可以生產齣高亮度和高白度的塗佈紙。在塗料配方裏，用50份的硫痠鈣代替高嶺土，塗佈紙的亮度和白度可以分彆提高4%和15%。研究錶明，使用硫痠鈣作為顏料，塗佈紙闆I GT印刷粘著性能的錶麵彊度很高，印刷光澤度與無光澤塗佈紙相似。
재과거적궤년간，인문대우고량도지적관주화수구이경구사조지엄가탐심신적방법래제고도포지적량도화백도。용이제고지화지판광학성능（여량도、백도화광택도）적안료도포득도엄범응용。저사광학성질대우최종사용자비상중요，동시야결정료도포지적최종성본。상비우기타적상규안료，여중질탄산개、침정탄산개화고령토，류산개구유고유적경호적광학성능。본연구적목적시이용종린산엄구득적폐기물합성류산개，병연구타대도료적류변성이급대도포지광학성능적영향。가입류산개가이제고도층적보수성，저대우개선운행성능시흔유방조적。결과환표명，장류산개용작안료，가이생산출고량도화고백도적도포지。재도료배방리，용50빈적류산개대체고령토，도포지적량도화백도가이분별제고4%화15%。연구표명，사용류산개작위안료，도포지판I GT인쇄점착성능적표면강도흔고，인쇄광택도여무광택도포지상사。
In the last few years, interest and demand of high bright paper have forced paper manufacturers to think new ways to improve brightness and whiteness of coated paper. Pigment coating is widely used to enhance the optical properties such as brightness, whiteness, and gloss of paper and paperboard. These optical properties are the most important for end user and also determine the final cost of coated paper. Calcium sulfate has inherent better optical properties compared to other conventional pigments for example ground calcium carbonate, precipitated calcium carbonate and kaolin clay. The present study was carried out with an aim to synthesize calcium sulfate using waste procured from phosphoric acid industry and to study its impact on the rheology of coating color as well as optical properties of coated paper. Addition of calcium sulfate improved the water retention property of coating color which can be helpful for improving the machine runnability. The results also revealed that calcium sulfate can be used as a pigment to produce coated paper of high brightness and whiteness. The brightness and whiteness of the coated paper were improved 4 and 15 points, respectively by using 50 parts of calcium sulfate as a pigment replacing clay from the coating formulation. The surface strength in terms of IGT pick value of coated sheets was found signiifcantly comparable using calcium sulfate as pigment. The print gloss results were observed analogous with matt grade coated paper.
