CAJ | 학술논문

重质碳酸钙加入浆中前对其进行絮凝，在提高其添加量的同时尽可能使纸张强度降低最小。填料絮体特性，如絮体粒径、结构对絮凝效果有较强的影响。本文使用质量分形分析方法来确定絮体结构对絮凝系统的影响，利用光衍射光谱得到三种不同絮凝剂体系在高剪切条件下絮凝的絮体质量分析维数。该三种絮凝剂体系分别为单聚合物C-PAM、双阳离子聚合物p-DADMAC/C-PAM、大聚合物组合C-PAM/大聚合物，采用这三种絮凝剂体系对填料进行絮凝，絮凝后加到浆中抄成手抄片，然后研究其对手抄片性能的影响。研究发现，经C-PAM/大聚合物絮凝的GCC加填后的手抄片抗张指数得到了最大的改善。从质量分形分析结果可知，这是由于该絮凝剂体系使填料在絮凝过程中形成絮体更紧密，更接近于球形。手抄片截面分析也表明，采用C-PAM/大聚合物絮凝剂体系絮凝GCC絮体具有更均一的粒径。综上所述，分形分析能使我们更好地理解絮凝填料的特性和它们对纸张性能的影响：加填填料絮体越致密，越接近于球形，越有利于改善抄造纸张的抗张指数。
중질탄산개가입장중전대기진행서응，재제고기첨가량적동시진가능사지장강도강저최소。전료서체특성，여서체립경、결구대서응효과유교강적영향。본문사용질량분형분석방법래학정서체결구대서응계통적영향，이용광연사광보득도삼충불동서응제체계재고전절조건하서응적서체질량분석유수。해삼충서응제체계분별위단취합물C-PAM、쌍양리자취합물p-DADMAC/C-PAM、대취합물조합C-PAM/대취합물，채용저삼충서응제체계대전료진행서응，서응후가도장중초성수초편，연후연구기대수초편성능적영향。연구발현，경C-PAM/대취합물서응적GCC가전후적수초편항장지수득도료최대적개선。종질량분형분석결과가지，저시유우해서응제체계사전료재서응과정중형성서체경긴밀，경접근우구형。수초편절면분석야표명，채용C-PAM/대취합물서응제체계서응GCC서체구유경균일적립경。종상소술，분형분석능사아문경호지리해서응전료적특성화타문대지장성능적영향：가전전료서체월치밀，월접근우구형，월유리우개선초조지장적항장지수。
Prelfocculation of ifller particles before their addition to pulp stock provides the most viable and practical solution to increase ifller content while minimizing strength loss. The characteristics of ifller lfocs, such as lfoc size and structure, have a strong inlfuence on prelfocculation efifciency. The inlfuence of lfocculant systems on the structural characteristics of ifller lfocs was examined using a mass fractal analysis method. Mass fractal dimensions of ifller lfocs under high shear conditions were obtained using light diffraction spectroscopy for three different lfocculants. A single polymer (C-PAM), a dual cationic polymer (p-DADMAC/C-PAM) and a C-PAM/micropolymer system were used as lfocculants, and their effects on handsheet properties were investigated. The C-PAM/micropolymer system gave the greatest improvement in tensile index. The mass fractal analysis showed that this can be attributed to the formation of highly dense and spherical lfocs by this lfocculant. A cross-sectional analysis of the handsheets showed that ifller lfocs with more uniform size were formed when a C-PAM/micropolymer was used. The results suggest that a better understanding of the characteristics of prelfocculated ifllers and their inlfuence on the properties of paper can be gained based on a fractal analysis. This paper suggests that sheets with a better tensile index can be made when we have denser and more spherical ifller lfocs.