CAJ | 학술논문

用常见印花糊料海藻酸钠调制色浆,进行磁棒平网印花试验,研究了印制工艺参数(目数、磁棒直径、印制车速、磁力)对海藻酸钠糊料印制性能(透网性能、表面得色量、渗透性能、花型轮廓清晰度)的影响,同时,探索印花糊料印制性能与流变性能的关系.研究结果表明,目数、磁棒直径、印花车速、磁力均会不同程度地影响糊料的印制性能,影响程度顺序为：目数>磁棒直径>印花车速>磁力.随着目数减小或磁棒直径增加或印制车速降低,色浆透过网孔转移到织物上的量(即透网量)增加,织物表面得色量和渗透率提高,但是印制花型的精细度会降低.磁棒直径与色浆透网量的关系符合G=aRb,印制车速与色浆透网量的关系符合G=Av+B/v+C.印制工艺参数的改变影响到色浆楔形区内的流体动力学压力,从而影响色浆所受的剪切作用.色浆在剪切作用下的剪切变稀特性和粘弹性能决定了色浆的透网性能,进而影响着表面得色量、渗透性及花型轮廓精细度.
용상견인화호료해조산납조제색장,진행자봉평망인화시험,연구료인제공예삼수(목수、자봉직경、인제차속、자력)대해조산납호료인제성능(투망성능、표면득색량、삼투성능、화형륜곽청석도)적영향,동시,탐색인화호료인제성능여류변성능적관계.연구결과표명,목수、자봉직경、인화차속、자력균회불동정도지영향호료적인제성능,영향정도순서위：목수>자봉직경>인화차속>자력.수착목수감소혹자봉직경증가혹인제차속강저,색장투과망공전이도직물상적량(즉투망량)증가,직물표면득색량화삼투솔제고,단시인제화형적정세도회강저.자봉직경여색장투망량적관계부합G=aRb,인제차속여색장투망량적관계부합G=Av+B/v+C.인제공예삼수적개변영향도색장설형구내적류체동역학압력,종이영향색장소수적전절작용.색장재전절작용하적전절변희특성화점탄성능결정료색장적투망성능,진이영향착표면득색량、삼투성급화형륜곽정세도.
The printing pastes were prepared using sodium alginate as common thickener and applied in magnetic rod flat screen printing. The effects of printing parameters such as mesh, magnetic-rod diameter, printing speed and magnetic force on the printing performances including paste add-on, color yield, penetrabili-ty and pattern edge sharpness were intensively studied. Meanwhile the relations between rheological proper-ties and printing performances of the printing pastes were tentatively explored. The results showed that mesh, magnetic-rod diameter, printing speed and magnetic force had impacts on the printing performances to different degrees. The influence orders were as fol ows: mesh>magnetic-rod diameter>printing speed>mag-netic force. As the magnetic-rod diameter increased or mesh or printing speed decreased, the amount of print-ing pastes applied to the fabrics, namely paste add-on, had certain increase, and the color yield and penetra-tion amounts also increased, while the outline sharpness decreased. The relation between magnetic-rod diam-eter and paste add-on meets the equation: G=aRb. And the relation between printing speed and paste add-on meets the equation: G=Av+B/v+C. The change of printing parameters affected the hydrodynamic pressure of the printing pastes in the wedge region, which in turn had effects on the shear action to the printing pastes. The shear-thinning features and viscoelasticity of the printing pastes under shears determined the paste add-on, influencing the color yield, penetrability and pattern edge sharpness.