纤维素科学与技术2018，Vol.26Issue(1)：17-24,8.DOI:10.16561/j.cnki.xws.2018.01.08
碱脲体系对稻草化机浆制浆性能的影响
Modification on the Chemi-mechanical Pulping Property of Rice Straw with Alkali-urea System
摘要
Abstract
NaOH-thiourea-urea aqueous solution was used to modify the chemi-mechanical pulping property of rice straw. The effects of alkali dosage, soaking time, treating temperature, and treating time were evaluated by single-factor experiments. The analysis of FT-IR, XRD and SEM was applied to show the variations on the micro-properties of the rice straw and pulp fibers. The optimal conditions were determined as an alkali dosage of 6%, a soaking time of 15min, a freezing temperature of -5℃, and a freezing time of 60 min. Compared with those of the bleached chemi-thermo-mechanical pulp, the refining energy of the bleached chemi-mechanical pulp prepared with the NaOH-thiourea-urea aqueous solution was decreased by 18.6%, the accept yield was increased by 3.8%, the whiteness was increased by 4.4%, the tensile index was increased by 12.8%, the burst index was increased by 15.7%, and the bulk was decreased by 2.9%. There were no significant effects on the structure of the functional groups and crystalline region, or the integral fiber morphology of the rice straw chips, however, there were a little more damages on the single fiber surface morphology of the bleached pulp prepared with the NaOH-thiourea-urea aqueous solution.关键词
碱脲体系/稻草/化机浆/磨浆性能/强度性能Key words
NaOH-thiourea-urea aqueous solution/rice straw/chemi-mechanical pulp/refining property/strength property分类
轻工纺织引用本文复制引用
翟睿,陈华,王慧丽,胡志军,张学金,周小凡..碱脲体系对稻草化机浆制浆性能的影响[J].纤维素科学与技术,2018,26(1):17-24,8.基金项目
制浆造纸科学与技术教育部/山东省重点实验室开放基金资助(KF201718) （KF201718）
浙江省自然科学基金项目(LY15C160002). （LY15C160002）
