CN112375753A - 一种静电复印纸用打浆酶制剂及其制备方法和应用 - Google Patents
一种静电复印纸用打浆酶制剂及其制备方法和应用 Download PDFInfo
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Abstract
本发明揭示了一种静电复印纸用打浆酶制剂及其制备方法和应用，所述打浆酶（质量百分比）包括，内切纤维素酶10~20%；外切纤维素酶6~15%；木聚糖酶1~5%；脂肪醇聚氧乙烯醚1~3%；吐温0.8~1.2%；山梨酸钾0.1~1%；盐5~15%；果胶酶1~5%；去离子水40~65%。制备时先将去离子水加入搅拌罐中，按比例将盐、果胶酶、脂肪酶加入搅拌罐中搅拌，再将内切纤维素酶、外切纤维素酶、木聚糖酶、半纤维素酶继续搅拌，最后按比例加入脂肪醇聚氧乙烯醚、吐温、山梨酸钾搅拌得所述打浆酶制剂。本发明的打浆酶制剂使得静电复印纸抗张强度、平滑度、挺度都增加，纸张品质大大提升。
Description
技术领域
本发明涉及造纸技术领域，尤其涉及一种静电复印纸用打浆酶制剂及其制备方法和应用。
背景技术
纸是由植物纤维或其他纤维交织固着形成的，造纸所需的原料中需要植物纤维或其他纤维。浆料中纤维的粗细、长短、纤维壁厚均对成纸有所影响，尤其对静电复印纸来说，影响更大。静电复印纸是一种表面平滑且强度高、挺度高、耐折度高的纸张，且纸张要求具有较好的匀度，纤维的分丝帚化可提高纸张的抗张强度、纸张的光学性质、纸张的平滑度及匀度。为了保证浆料中纤维尽量分丝帚化、又避免切断纤维。打浆过程中需要高粘状打浆，提高打浆浓度，但打浆过程中的消耗的电能也相对增加。
传统的打浆酶能促进浆料打浆过程中的分丝和帚化，促进打浆更容易，节省打浆能耗，但是同时对纤维进行切断，使纤维变短、变细，导致静电复印纸挺度下降，影响成纸品质更一步的提升。
发明内容
鉴于现有技术存在上述缺陷，本发明的目的在于提供一种静电复印纸用打浆酶制剂及其制备方法和应用。
本发明的目的，将通过以下技术方案得以实现：
一种静电复印纸用打浆酶制剂，所述打浆酶（质量百分比）包括，
内切纤维素酶 10~20%；
外切纤维素酶 6~15%；
木聚糖酶 1~5%；
脂肪醇聚氧乙烯醚 1~3%；
吐温 0.8~1.2%；
山梨酸钾 0.1~1%；
氯化钠 5~15%
去离子水 40~65%。
优选地，所述制剂还包括半纤维素酶5~10%；果胶酶1~5%。
优选地，所述制剂还包括脂肪酶1~5%。
优选地，所述内切纤维素酶的酶活力为5000~10000u/ml；所述外切纤维素酶的酶活力为5000~10000u/ml；所述木聚糖酶的酶活力为10000~15000u/ml。
优选地，所述半纤维素酶的酶活力为5000~10000u/ml，所述果胶酶的酶活力为10000~15000u/ml。
优选地，所述脂肪酶的酶活力为2000~5000u/ml。
优选地，包括如下步骤，先将去离子水加入搅拌罐中，按比例将氯化钠、果胶酶、脂肪酶加入搅拌罐中搅拌，再将内切纤维素酶、外切纤维素酶、木聚糖酶、半纤维素酶继续搅拌，最后按比例加入脂肪醇聚氧乙烯醚、吐温、山梨酸钾搅拌得所述打浆酶制剂。
优选地，所述制剂用于静电复印纸在处理木浆中的应用。
本发明突出效果为：本发明中的打浆酶制剂通过对纤维内部进行分解，促进了打/磨浆过程中的分丝和帚化，促进打浆更容易，节省打浆能耗。打浆酶制剂通过对纤维表面进行改性，对纤维末端进行分化，促进纤维的润胀，同时使纤维表面和末端的羟基和羧基增多，从而增强纤维之间的结合力，达到增强成纸性能，提高成纸品质的效果。通过打浆酶对纤维的改性，纤维形态起明显有益变化，无论是磨前或者磨后，其纤维表面均有更为明显的分丝帚化，因此浆料的叩解度更易提高，同时表面细纤维化有助于提高成纸物理性能和改善留着率，纸张成形时纤维间结合力更强。
以下便结合实施例，对本发明的具体实施方式作进一步的详述，以使本发明技术方案更易于理解、掌握。
具体实施方式
本发明揭示了一种静电复印纸用打浆酶制剂及其制备方法和应用，所述打浆酶制剂如下所示：
打浆酶制剂配方A：内切纤维素酶（酶活力为5000~10000u/ml)12%；外切纤维素酶（酶活力为5000~10000u/ml)8%；木聚糖酶（酶活力为10000~15000u/ml)3.5%；脂肪醇聚氧乙烯醚2%；吐温0.8%；山梨酸钾0.1%；氯化钠10%；去离子水63.6%。
打浆酶制剂配方B：内切纤维素酶（酶活力为5000--10000u/ml)10%；外切纤维素酶（酶活力为5000~10000u/ml)5%；木聚糖酶（酶活力为10000--15000u/ml)3.5%；半纤维素酶（酶活力为5000~10000u/ml)7%；果胶酶（酶活力为10000~15000u/ml)3.5%；脂肪醇聚氧乙烯醚1%；吐温0.8%；山梨酸钾0.5%；氯化钠8%；去离子水60.7%。
打浆酶制剂配方C：内切纤维素酶（酶活力为5000~10000u/ml)15%；外切纤维素酶（酶活力为5000~10000u/ml)12%；木聚糖酶（酶活力为10000~15000u/ml)1.5%；半纤维素酶（酶活力为5000~10000u/ml)6%；果胶酶（酶活力为10000~15000u/ml)1.5%；脂肪酶（酶活力为2000~5000u/ml)2%；脂肪醇聚氧乙烯醚1%；吐温1%；山梨酸钾0.8%；氯化钠12%；去离子水47.2%。
实施例1：
华中某纸厂，40%硫酸盐针叶木浆，30%硫酸盐阔叶木浆，30%杨木化机浆长网纸机生产
80g/m2静电复印纸，车速706m/min，硫酸盐针叶木浆与硫酸盐阔叶木浆碎浆浓度5%，磨浆浓
度20%，磨浆后在成浆池加0.1%的消泡剂、0.1%的杀菌剂，在流送系统加0.3%的助留助滤剂。
不加打浆酶，磨后硫酸盐针叶木浆叩解度380SR、硫酸盐阔叶木浆叩解度320SR，磨浆电耗是
184kwh/吨浆；向硫酸盐针叶木浆碎浆机加配方A打浆酶100ppm、硫酸盐阔叶木浆碎浆机加
配方A打浆酶80ppm ，磨后硫酸盐针叶木浆叩解度380SR、硫酸盐阔叶木浆叩解度320SR，磨浆
电耗是144kwh/吨浆；向硫酸盐针叶木浆碎浆机加配方B打浆酶100ppm、硫酸盐阔叶木浆碎
浆机加配方B打浆酶80ppm ，磨后硫酸盐针叶木浆叩解度380SR、硫酸盐阔叶木浆叩解度
320SR，磨浆电耗是140kwh/吨浆; 向硫酸盐针叶木浆碎浆机加配方C打浆酶100ppm、硫酸盐
阔叶木浆碎浆机加配方C打浆酶80ppm ，磨后硫酸盐针叶木浆叩解度380SR、硫酸盐阔叶木
浆叩解度320SR，磨浆电耗是140kwh/吨浆。以上方法制浆生产的静电复印纸物理指标如下
表：
| 不加酶 | 配方A | 配方B | 配方C | |
| 定量（g/m<sup>2</sup>) | 80 | 80 | 80 | 80 |
| 抗张指数（N.m/g) | 33.45 | 36.84 | 37.42 | 36.95 |
| 纵向挺度（mN.m) | 0.28 | 0.25 | 0.27 | 0.29 |
| 横向挺度（mN.m) | 0.15 | 0.13 | 0.14 | 0.16 |
| 平滑度（s) | 30 | 38 | 40 | 41 |
实施例2：
华东某纸厂，50%硫酸盐针叶木浆，50%硫酸盐阔叶木浆，长网纸机生产80g/m2静电复印
纸，车速1200m/min，硫酸盐针叶木浆与硫酸盐阔叶木浆碎浆浓度4%，磨浆浓度20%，磨浆后
在成浆池加0.2%的消泡剂、0.15%的杀菌剂，在流送系统加0.25%的助留助滤剂。不加打浆
酶，磨后硫酸盐针叶木浆叩解度420SR、硫酸盐阔叶木浆叩解度350SR，磨浆电耗是196kwh/吨
浆；向硫酸盐针叶木浆碎浆机加配方A打浆酶120ppm、硫酸盐阔叶木浆碎浆机加配方A打浆
酶100ppm ，磨后硫酸盐针叶木浆叩解度420SR、硫酸盐阔叶木浆叩解度350SR，磨浆电耗是
154kwh/吨浆；向硫酸盐针叶木浆碎浆机加配方B打浆酶120ppm、硫酸盐阔叶木浆碎浆机加
配方B打浆酶100ppm ，磨后硫酸盐针叶木浆叩解度420SR、硫酸盐阔叶木浆叩解度350SR，磨
浆电耗是150kwh/吨浆；向硫酸盐针叶木浆碎浆机加配方C打浆酶120ppm、硫酸盐阔叶木浆
碎浆机加配方C打浆酶100ppm ，磨后硫酸盐针叶木浆叩解度420SR、硫酸盐阔叶木浆叩解度
350SR，磨浆电耗是152kwh/吨浆。以上方法制浆生产的静电复印纸物理指标如下表：
| 不加酶 | 配方A | 配方B | 配方C | |
| 定量（g/m<sup>2</sup>) | 80 | 80 | 80 | 80 |
| 抗张指数（N.m/g) | 35.45 | 39.84 | 39.42 | 40.95 |
| 纵向挺度（mN.m) | 0.29 | 0.24 | 0.28 | 0.29 |
| 横向挺度（mN.m) | 0.16 | 0.13 | 0.14 | 0.17 |
| 平滑度（s) | 28 | 36 | 38 | 40 |
添加打浆酶后，吨浆磨浆电耗降低20%左右，加入配方A打浆酶后，静电复印纸虽然挺度下降，但其抗张强度、平滑度增加。添加配方C打浆酶后，静电复印纸抗张强度、平滑度、挺度都增加，纸张品质大大提升。
本发明尚有多种实施方式，凡采用等同变换或者等效变换而形成的所有技术方案，均落在本发明的保护范围之内。
Claims (8)
1.一种静电复印纸用打浆酶制剂，其特征在于：所述打浆酶（质量百分比）包括，
内切纤维素酶 10~20%；
外切纤维素酶 6~15%；
木聚糖酶 1~5%；
脂肪醇聚氧乙烯醚 1~3%；
吐温 0.8~1.2%；
山梨酸钾 0.1~1%；
氯化钠 5~15%
果胶酶 1~5%
去离子水 40~65%。
2.如权利要求1所述的一种静电复印纸用打浆酶制剂，其特征在于：所述制剂还包括半纤维素酶5~10%；果胶酶1~5%。
3.如权利要求2所述的一种静电复印纸用打浆酶制剂，其特征在于：所述制剂还包括脂肪酶1~5%。
4.如权利要求1所述的一种静电复印纸用打浆酶制剂，其特征在于：所述内切纤维素酶的酶活力为5000~10000u/ml；所述外切纤维素酶的酶活力为5000~10000u/ml；所述木聚糖酶的酶活力为10000~15000u/ml。
5.如权利要求2所述的一种静电复印纸用打浆酶制剂，其特征在于：所述半纤维素酶的酶活力为5000~10000u/ml，所述果胶酶的酶活力为10000~15000u/ml。
6.如权利要求3所述的一种静电复印纸用打浆酶制剂，其特征在于：所述脂肪酶的酶活力为2000~5000u/ml。
7.如权利要求1-6中任意一种所述的一种静电复印纸用打浆酶制剂的制备方法，其特征在于：包括如下步骤，先将去离子水加入搅拌罐中，按比例将氯化钠、果胶酶、脂肪酶加入搅拌罐中搅拌，再将内切纤维素酶、外切纤维素酶、木聚糖酶、半纤维素酶继续搅拌，最后按比例加入脂肪醇聚氧乙烯醚、吐温、山梨酸钾搅拌得所述打浆酶制剂。
8.如权利要求1-6中任意一种所述的一种静电复印纸用打浆酶制剂的应用，其特征在于：所述制剂用于静电复印纸在处理木浆中的应用。
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