Study On Application And Mechanism Of AKD Sizing In The Production Of Tip Base Paper Of Cigarette

The paper studied that the effect of retention aid system on sizing efficiency of AKD size agent was intensively investigated, the APAM/CS system was proved to be superior to CPAM/CS, and optimum effect was achieved with the addition order of PCC—CS+AKD— APAM when the addition amount of precipitated calcium carbonate and pH value of the furnish system was 20%-25% and 8 respectively.Optimization of AKD sizing agents in the production of tip base paper of cigarette was studied based on Orthogonal Experimental Analytical method, and sizing efficiency was proved to be optimum when the dosage of AKD size agent, CS, CMC, and APAM was 0.4%, 0.4%, 0.2‰ and 0.25‰, respectively. The experimental results of Zeta potential (|ζ| ) measurements show that, Zeta potential value decreases with increasing addition of AKD size and CS, and Zeta potential value increases as the addition amount of CMC and APAM increases. It was also found in our work that, the variation tendency of cationic demand of furnish system was consistent with Zeta potential, and sizing performance was principally and more or less consistent with the Zeta potential. And, as for the furnish retention process, other influencing factors should also be taken into consideration, and Zeta potential can not only be exclusively emphasized. Subsequently, SEM analytical method was applied for elucidation of relevant mechanisms, with the results showing that, application of AKD size agent was corresponding to film formation between fibers and further increase in sizing performance.The experimental results based advanced analytical methods of DSC show that, DSC adsorption varies with increasing addition amount of AKD size and gives a new method of measuring the quality of AKD size. And adopting GC explains that extraction of AKD size from non-dried paper web is proved to be easier as compared with dried handsheet samples. The combined amount of AKD size in paper web increases drastically after drying post-treatment, and the ratio of AKD size participating in bond-formation reaction to the retained AKD size is merely 9.3%. non-reacted AKD size and the corresponding hydrolyzed byproducts is proposed to be contributing to low friction index of AKD-sized paper products and the sizing behavior of hysteresis.