印染助剂
印染助劑
인염조제
TEXTILE AUXILIARIES
2014年
4期
19-23
,共5页
印花糊料%流变性能%粘性%弹性
印花糊料%流變性能%粘性%彈性
인화호료%류변성능%점성%탄성
printing pastes%rheological properties%viscosity%elasticity
通过稳态剪切、动态频率扫描和瞬态试验，研究了7种常见天然印花糊料的流变性能，并寻找其符合的流变模型。研究表明：印花糊料表现出不同程度的剪切变稀特征，流动曲线在低剪切速率区域符合Cross模型，在剪切变稀区域符合Power-law模型，粘弹性能符合Friedrich-Braun模型。黄原胶溶液形成的是弱凝胶体系，在整个频率作用范围内，表现出较强的弹性行为。而其他糊料溶液形成的是溶胶体系，在外界频率作用下，其粘弹性能经历了以粘性为主向弹性为主的转变。除了黄原胶外，其他糊料都具有良好的粘度回复性能。
通過穩態剪切、動態頻率掃描和瞬態試驗，研究瞭7種常見天然印花糊料的流變性能，併尋找其符閤的流變模型。研究錶明：印花糊料錶現齣不同程度的剪切變稀特徵，流動麯線在低剪切速率區域符閤Cross模型，在剪切變稀區域符閤Power-law模型，粘彈性能符閤Friedrich-Braun模型。黃原膠溶液形成的是弱凝膠體繫，在整箇頻率作用範圍內，錶現齣較彊的彈性行為。而其他糊料溶液形成的是溶膠體繫，在外界頻率作用下，其粘彈性能經歷瞭以粘性為主嚮彈性為主的轉變。除瞭黃原膠外，其他糊料都具有良好的粘度迴複性能。
통과은태전절、동태빈솔소묘화순태시험，연구료7충상견천연인화호료적류변성능，병심조기부합적류변모형。연구표명：인화호료표현출불동정도적전절변희특정，류동곡선재저전절속솔구역부합Cross모형，재전절변희구역부합Power-law모형，점탄성능부합Friedrich-Braun모형。황원효용액형성적시약응효체계，재정개빈솔작용범위내，표현출교강적탄성행위。이기타호료용액형성적시용효체계，재외계빈솔작용하，기점탄성능경력료이점성위주향탄성위주적전변。제료황원효외，기타호료도구유량호적점도회복성능。
The rheological properties of seven natural printing pastes were investigated by steady shear, dynamic frequency sweep and transient tests. Moreover, the proper rheological models were explored. The re-sults showed that printing pastes exhibited the shear-thinning features to various degrees. The flow curve da-ta were wel correlated with the Cross model in the low shear rates and the Power-law model in the shear-thinning region. And the viscoelastic data were wel correlated with the Friedrich-Braun model. Xanthan stock paste belonged to the weak-gel system, and performed strong elastic behavior over the whole frequen-cy range. Other stock pastes formed the sol-gel system, and the viscoelasticity experienced the transition from viscosity to elasticity under the external frequency. In addition, other pastes had excel ent viscosity recov-ery except xanthan.
