共查询到18条相似文献，搜索用时 140 毫秒
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阳离子分散松香施胶剂施胶性能的研究 总被引：6，自引：1，他引：5
阳离子分散松香施胶剂（ＣＤＲＳ）作为松香系列施剂的新型换代产品之一,其施胶性能是评价其应用价值的重要依据。本研究对自制的ＣＤＲＳ在不同条件下的施胶效果进行了试验并与现有的商品松香施胶剂进行了对比。中碱性条件一的施胶试验结果表明,ＣＤＲＳ相对阴离子分散松香胶而言,消耗助留剂硫酸铝的量约低５０％,而且在ＰＨ６．５－７．５条件下具有较好的施胶效果。 相似文献
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造纸用松香施胶剂的新进展 总被引：3，自引：0，他引：3
造纸用松香施胶剂的新进展南京林业大学姚光裕１造纸用松香基施胶剂的发展￣［１－２］在造纸过程中使用很多化学品，其中尤以施胶剂用量最多。施胶是指对浆料、纸张或纸板进行处理，使其获得抗水、抗墨水、抗油、抗印刷油墨等流体的渗透性能。施胶方法分两大类即浆内施胶... 相似文献
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用苯乙烯、丙烯酸酯与甲基丙烯酸二甲胺乙酯或二甲基二烯丙基氯化铵的共聚物作乳化剂分别制备了叔胺型阳离子分散松香施胶剂(SYM-1)和季铵型阳离子分散松香施胶剂(JYM-1),并比较了它们的施胶性能。实验结果表明,叔胺型高分子表面活性剂(SYS-1)的电荷密度和SYM-1的施胶性能受pH值影响较大,SYM-1的施胶度在相同施胶条件下比JYM-1大10 s以上,但在含碳酸钙抄纸体系中失去其施胶性。季铵型高分子表面活性剂(JYS-1)的电荷密度不受pH值的影响,用硫酸铝和聚乙烯胺复合物作定着剂时JYM-1在含碳酸钙抄纸体系中的施胶度大于5 s。 相似文献
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阳离子型分散松香施胶剂HPCRZ的研究 总被引：3，自引：0，他引：3
自德国的Illig发明松香皂-铝矾的施胶体系以来,纸张的浆内施胶和松香用作施胶剂已有近200年历史,虽然解决了纸张“洇水”的问题,但同时由于在酸性条件下施胶,也带来了成纸耐久性差、设备腐蚀较严重等问题(Kulick,1977;陈蕴智等,2001)。近些年,由于中碱性造纸与酸性造纸相比较具 相似文献
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根据多种松香化合物及松香施胶剂的热分解谱图信息，详尽地探讨了热分解气相色谱与四甲基氢氧化铵（ＴＭＡＨ）联用方法对纸中松香类施胶剂及其成分含量的定量测定。结果表明该方法作为定量分析法方便可靠。本文还提出了有关中性松香施胶剂中松香酯成分由于ＴＭＡＨ作用而产生的酯交换问题及其解决办法。在其热分解过程中，松香酯的结构对其酯交换的程度有着显著的影响，热分解产生的烃基正碳离子越稳定的松香酯就越容易发生酯交换。另外，在分析探讨的基础上成功地测定了多种不同商品松香施胶剂于不同施胶条件下在纸中的助留情况。 相似文献
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松香酸酯用于中性施胶的研究 总被引：3，自引：0，他引：3
合成了４种松香酯用于中性施胶。探讨了松香酯结构与施胶性能的关系,研究了施胶条件对香酯施胶效能的影响。松香酯在中,碱性条件下表现了优良的施胶效率。 相似文献
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Preparation and sizing mechanisms of neutral rosin size II: functions of rosin derivatives on sizing efficiency 总被引：1，自引：0，他引：1
Four rosin derivatives, including rosin esters and rosinamides, were synthesized and used to prepare neutral rosin sizes. Their effects during sizing are discussed in detail. Compared to natural rosin, the rosin derivatives had nearly no effect on sizing even at high retention levels in paper. However, the rosin derivatives in the rosin sizes improved the stability of the emulsion size particles, and there was good correlation between the sizing effect and the stability of the emulsion sizes under neutral to alkaline conditions. On the other hand, the structure of the rosin derivatives significantly influenced the stability and sizing effect of the neutral rosin sizes. In particular, for glycerin rosin ester-rosin sizes, the emulsion stability and sizing effect increased with an increasing proportion of dirosinate, among the glycerin rosin esters. Consequently, it was suggested that the rosin derivatives hardly contribute to the sizing performance of paper but predominantly function to stabilize the neutral rosin size particles, thereby improving the efficiency of the size under neutral to alkaline sizing conditions. Also it was supposed that glycerol dirosinate in the neutral rosin size would probably enable formation of a more stable particle structure to prevent the destructive action of the OH– ion.This research was presented in part at the 48th annual meeting of the Japan Wood Research Society, Shizuoka, April 1998 相似文献
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以非离子型聚合物改性得到阳离子化剂,通过转型法成功制得了阳离子型分散松香施胶剂(CDRS),并对其性质进行了表征。CDRS为白色均一乳液,其Zeta电位为 26mV,体积平均粒径为0.271μm,一致性为0.404,粒径分布较好。在pH值6.0、Al2(SO4)3用量1%的条件下,CDRS对再生纸浆的施胶度为40s,施胶效果接近对照样品,耐老化性能则优于对照样品Hi-phase35。浊度实验和扫描电子显微镜观察表明,由于游离松香的皂化作用,CDRS的施胶效果随着pH值的升高而迅速下降。由于成本低,制备方法简单,在近中性条件下施胶效果较好。 相似文献
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Application of cationic polymer prepared from sulfuric acid lignin as a retention aid for usual rosin sizes to neutral papermaking 总被引：3，自引：0，他引：3
Cationic polymers that acted as the retention aids for usual rosin sizes in neutral papermaking were prepared from sulfuric acid lignin (SAL), one type of acid lignin. To convert SAL to the cationic polymer (MP-SAL), SAL was phenolated and then treated by the Mannich reaction to introduce the amino groups. In the MP-SAL single system, MP-SAL exhibited high sizing effectiveness in neutral papermaking with the rosin emulsion size. However, MP-SAL showed no sizing effectiveness when soap rosin size was used. MP-SAL showed increased sizing effectiveness as the pK
a of the introduced amino group increased. From this and comparison of the sizing degrees of MP-SAL and polyethylenimine, which possesses a linear structure, it was suggested that the sizing effectiveness was not only affected by the charge density and molecular weight, but also by the basicity of the introduced amino groups and the molecular structure of the retention aid. In the alum–MP-SAL dual system, alum and MP-SAL synergistically enhanced the sizing effectiveness in the rosin emulsion sizing at neutral pH. In turn, this allowed a decrease in the MP-SAL dosage and resulted in a small decrease in brightness.Part of this report was presented at the 48th Lignin Symposium, October 2003, Fukui 相似文献
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The mechanism of rosin size retention in rosin soap size-alum systems was studied on the basis of sizing behavior and the rosin size and aluminum contents of handsheets prepared under normal and particular conditions. Rosin size, aluminum, and calcium contents of handsheets prepared with various stirring times of pulp suspensions after pH adjustment suggested that rosin size components adsorbed on pulp fibers predominantly have the structure of free rosin acid rather than rosin aluminum or calcium salt. When a carboxyl group-blocked pulp was used, the rosin size content clearly decreased. This result shows that pulp carboxyl groups play a significant role in rosin size retention. Electrostatic interactions between dissociated carboxyl groups of pulps and anionic rosin size components through cationic aluminum compounds must be present in pulp suspensions. On the other hand, nonionic interactions in pulp suspensions, which occur particularly around pH 6.2–6.5, may also contribute to rosin size retention and appearance of sizing features. When the carboxyl group blocked pulp was used, some rosin size components were retained in the handsheets in largely coagulated form, resulting in no or quite low sizing levels, when the handsheets were dried at 20°C.This research was presented in part at the 64th pulp and paper research conference of Japan TAPPI, Tokyo, June 1997 相似文献
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纸浆模塑餐盒防油防水性能研究 总被引：3，自引：0，他引：3
对纸浆模塑快餐盒防油防水剂的选择及作用机理进行了阐述,并就防油防水剂的使用对产品质量的影响进行了研究分析,揭示了它们之间的相互关系。文章推荐了优化的工艺条件,ＡＫＤ用量０．２５％～０．４％,Ｆ３２１,１．５％～２５％,助留剂０．０１５％～０．０２％。 相似文献