【作者】 沈一丁；

【导师】 杨锦宗；

【作者基本信息】 大连理工大学 ， 精细化工， 2000， 博士

【摘要】 松香胶目前仍是造纸用主要施胶剂，且已从皂化胶、强化胶、阴离子乳液松香胶发展到阳离子乳液松香胶—第四代产品。同时施胶正从酸性向中性工艺转变。我国目前仍以非木材纤维造纸为主，以速生丰产的桉木为原料造纸进行中性造纸是今后发展方向。本课题主要研究开发高效中性松香施胶剂，主要工作如下： （1）制备出XQ-CR阳离子松香胶、XQ-AR阴离子中性松香胶，使之用于桉木化机浆及其他浆料配抄优质印刷纸的中性施胶。XQ-CR阳离子松香胶的制备关键是阳离子松香的制备及乳化，采用的是高分子乳化剂。XQ-AR阴离子中性松香胶的制备关键是特效乳化剂的制备，其主要成分是烷基酚聚氧乙烯醚马来酸酯磺酸盐。 （2）中性乳液松香胶必须配加相同离子性的聚丙烯酸树脂增效剂，这种增效剂同时具有分散和增强作用，本身亦可用于对施胶度要求不高的纸种的施胶处理。本课题分别研究了阴离子和阳离子聚丙烯酸树脂增效剂的制备条件，重点解决了松香改性及乳化、乳液贮存和应用工艺等问题。 （3）制备出中性施胶用的专用留着剂。分别研究了阳离子淀粉、阳离子聚丙烯酰胺和阳离子聚酰胺多胺环氧氯丙烷等的应用条件，它们的共同特点是，具有较高的相对分子质量和较强的阳离子性，可在中性或弱碱性条件下显示正电性，与纤维有较强的结合作用，能够通过化学和物理作用产生一定的增强、留着效果。但作为中性施胶松香留着剂，效果以聚酰胺多胺环氧氯丙烷最佳，其在碱性条件下可发生自交联作用，本身亦可用于对施胶要求并不很高的纸种的施胶。 大 连理 工 大 学 埔 土 学 位诠 文 W分别确定了上述产品的制备和应用工艺。XQ－CR阳离子松香胶的最佳应用邯是：硫酸铝 4o／b，胶料 0．5‘yo－1．OO／O，PAE 0．25。X；－0．5％，碳酸钙25O／O左右。采用逆向施胶工艺，硫酸铝加入稠浆处，胶料加入稀浆处。夏季施胶应提高硫酸铝及胶料用量，同时加入阳离子留着剂可消除高温和高 pH值对施胶的不利影响。XQ－AR阴离子松香胶的最佳应用条件：胶料0．5O－l．OO／O，硫酸铝4o／o，PAE0．25％－0．5％，碳酸钙25％左右。采用正向施胶工艺。 间进行了上述产品的结构表征和性能检测，研究了相应的湿部化学作用衅。对中性施胶腴断了研究。 上述研究是国家jit攻关 捡木化机浆配用系列助剂－XQ－CR中性施胶剂、XQ－助留助滤剂及 XQ－增强剂一的部分内容。研究自1997年6月始，目前已胁结束，XQ－CR阳离子中陇胶剂及XQ－AR阴离子中性贿胶均可填补国内空白，达到国夕中胜施胶剂水平；对草浆淋浆均具有明显的施胶效果，可使纸的质量提高，生产咸本降低，对于提高咸纸强度、抄造性能、印刷性能和邯性能，降低能耗和浆耗，减轻设备腐蚀和废水污染等；具有重大意义。且贮存稳定性好，如在全国推广，则纶得巨大的经济赃。更多还原

【Abstract】 The rosin sizes are still the mainl~ sizing agents for paperrnaking by now. The cationic rosin sizing agents are called to be the fourth generation production from the soaped sizes. the fortified sizes and the anionic rosin sizes of emulsion. Simultaneously. the papermaking technology have been conversing from acidic to weekly acidic or neutral sizing. Also the non-wood fiber are still the mainly materials for papermaking in china, but using the eucalyptus wood as the new raw material for papemiaking at neutral conditions will be the direction of development. The present investigation relates to sizes for a papermaking. more specifically to an internal size which works very well in papermaking under weakly acidic to neutral conditions. Series emulsions of rosin sizes have been gotten based on lots of the literatures of at home and abroad. (1) The XQ-CR cationic rosin sizes and the XQ-AR anionic rosin sizes have been developed. Conventional rosin emulsion sizes consists mainly of so-called fortified rosins, i.e., rosins modified with ctj~-unsaturated dibasic acids, and an anionic surfactant. Among a few of anionic surfactants. the sulfate ester of the maleic anhydride and polyoxyethylene nonylphenyl ether has shown to be the effective emulsifying agent. The anionic and cationic rosin sizes are both used in a dispersion in the present of the alkyl acrylate resin emulsions which can be used as the size synergist. (2) Comprising a rosin sizing agent fortified by adding the same ionic copolymer emulsion of alkyl actylate with stvrene wherein the rosin and modified rosin are dispersed in water with the aid of an emulsifying agent and the size synergist, and paper sized therewith. The rosin emulsion sizing agent of the present invention have exhibited an distinguished sizing effect in neutral papermaking systems even when content of the calcium carbonate is high therein and been excellent in mechanical and storage stability while decreasing the production cost in addition the sizing agent presents no significant difficulties in its production. (3) To increase the size degree of above rosin emulsion, the polyaminoamide epichlorohydrin (PAE) has been used. Comprising the copolymer of cationic acrylamide with other hydrophilic monomer and the cationic starch, it serves very well as both a retention aid and a sizing agent for neutral paper because its sizing quality around theneuthel pH is low The high molecular weight ard the Stronger cationic ctwes arenecesSary for attributing the excellent proPerties of retention and sizing. Not only as thesPecial retention agent for rosin sizes, but also the PAE can be used as the wetreinfOrcing agent by crossing of itself at the neutrai or basic condition.(4) The best conditions of preparaion and aPpiicaion of above products have beendetendned, the sizing technology of catiohic size XQ-CR is as mis: sulfate altalniurn4%. XQ-CR 0.5W1 .0%,PAE 0.259M.5%. calciurn carbomate 25% with the reversesining. in the summer, the disadvantaged infiuences of high temperatUr and high pHvalue tO sdrig are reduced by adding more sulfate aIurnndum and sizing agent and PAE.The selected technology ofedonic sizing agen XQ-AR is as this: XQ-AR 0.5Wl.0%.sulfate aiwtum 4%, PAE 0.259ed.5%. talcium carbomate 25% with the betseq.(5) The measure ofsimCtUr and Properties for above ProduCts are cAned out. lt ishelpful for studying on the chdrical interachon mechasm betwen aids and the Paperfiber and neutral sthe mecbosm in wet processing.更多还原