CN105926344A - 纳米定量滤纸及其制备方法 - Google Patents

纳米定量滤纸及其制备方法 Download PDF

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CN105926344A
CN105926344A CN201610268288.XA CN201610268288A CN105926344A CN 105926344 A CN105926344 A CN 105926344A CN 201610268288 A CN201610268288 A CN 201610268288A CN 105926344 A CN105926344 A CN 105926344A
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吴安波
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Hangzhou Special Paper Industry Co Ltd
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Abstract

本发明公开了一种纳米定量滤纸，按重量份数计，由以下组分制备而成：竹浆：30份~80份；龙须草浆：5份~40份；针叶木浆：30份~80份；棉桨：30份~80份；木质素：0.2份~5份；纳米纤维素晶体：1份~5份；水溶性聚乙烯醇纤维：20~40份；湿强剂：0.5‑3份；分散剂：0.2~0.8份；消泡剂：0.1‑0.3份；本发明将各种浆料通过超高压微射流纳米分散机得到纤维素纳米纤维，该纤维素纳米纤维具有比铁更硬更轻的特性，用于滤纸行业可以实现纸页轻量化，加入纳米纤维素晶体可与纸浆纤维能够紧密的结合，从而提高了纸浆纤维之间的结合力。

Description

纳米定量滤纸及其制备方法
技术领域
本发明涉及滤纸技术领域，具体涉及一种纳米定量滤纸及其制备方法。
背景技术
定量滤纸属于纤维素滤纸，是一种具有良好过滤性能的纸，纸质疏松，对液体有强烈的吸收性能，因此，常用作化学分析实验中的过滤介质，使固液分离。其在制造过程中，纸浆经过盐酸和氢氟酸处理，并经过去离子水洗涤，将纸纤维中大部分除去，所以灼烧后残留灰分很少，对分析结果几乎不产生影响，适合作精密定量分析。目前，定量滤纸的过滤速度、过滤精度和稳定性有待进一步统一，同时定量滤纸的纸页较为厚重。
发明内容
本发明目的是提供一种纳米定量滤纸及其制备方法和应用，以解决现有技术的不足。
为实现发明目的，本发明采取的技术方案为：
纳米量性滤纸，按重量份数计，包括以下组分：
作为优选，所述的分散剂为聚氧乙烯和/或阴离子型聚丙烯酰胺。
作为优选，所述的消泡剂选自丁醇、辛醇、硅油或松油的一种或多种。
作为优选，所述的竹浆为经过200目的筛网得到的竹浆。
作为优选，所述的竹浆、龙须草浆、针叶木浆和棉桨均需分别经过盐酸和氢氟酸处理，并经过蒸馏水洗涤得到的浆料。
作为优选，所述的纳量定型滤纸的定量为40±2g/㎡，厚度为1.0±0.01mm。
本发明还包括上述纳米定量滤纸的制备方法，包括如下步骤：
1)将竹浆、龙须草浆、针叶木浆和棉桨均分别经过盐酸和氢氟酸处理，并经过蒸馏水洗涤得到的浆料。
2)按配料量将经过步骤1)处理的竹浆料、龙须草浆料、针叶木浆料和棉浆料加水进行混合在超高压微射流纳米分散机的作用下进行剥离、撕裂成直径为15—100nm之间，长度在200nm～20微米的纤维素纳米纤维浆料，所述的浆料中含纤维素纳米纤维的重量百分比为10～30％；
3)将配料量的纳米纤维素晶体分散在水中得到稳定的纳米纤维素晶体胶体，其中该纳米纤维素晶体胶体的纳米纤维素晶体的质量分数为3～8％；
4)将步骤2)所得的纤维素纳米纤维浆料、步骤3)得到的纳米纤维素晶体胶体、木质素、分散剂、消泡剂和湿强剂再于打浆机中进行打浆得到成浆，成浆的打浆浓度为3.5-4.5％，打浆度30-50°SR，湿重6-8g的成浆；
5)将步骤4)得到的成浆按常规条件上网抄造造、压榨和烘干，获得纳米定量滤纸；
6)将纳米定量滤纸进行卷曲、分切，获得成品纸。
本发明将各种浆料通过超高压微射流纳米分散机得到纤维素纳米纤维，该纤维素纳米纤维具有比铁更硬更轻的特性，用于滤纸行业可以实现纸页轻量化。
竹浆为中等纤维长度的纸浆，细而柔软。浆张松厚度、撕裂度高，耐破强度和抗张强度较低，有较高的机械强度；龙须草浆洁净强韧，纤维细长，有优越的交织力，成纸较细腻平滑，机械强度良好；纳米纤维素晶体(nano-crystalline cellulose，NCC)，其粒径一般在30～100nm之间，比表面积很大，可以长期稳定地分散在溶剂体系形成准交替分散体系，在水中分散形成稳定的NCC胶体，纳米纤维素质轻、力学性能优异、透光性，其生物降解性和可再生性也是其他增强材料无法相比的，NCC在制浆造纸中作为增强、助留、助滤剂有很好的发展前景。
具体实施方式
下面通过实施例进一步描述本发明，但本发明不仅仅局限于以下实施例。
实施例1
纳米量性滤纸，按重量份数计，包括竹浆：50份，龙须草浆：20份，针叶木浆：40份，棉桨：30份，木质素：0.2份，纳米纤维素晶体：1份，分散剂：0.2份，消泡剂：0.1份，湿强剂：3份。
所述的分散剂为聚氧乙烯；所述的消泡剂为丁醇；所述的竹浆为经过200目的筛网得到的竹浆；所述的竹浆、龙须草浆、针叶木浆和棉桨均需分别经过盐酸和氢氟酸处理，并经过蒸馏水洗涤得到的浆料。
上述纳米定量滤纸的制备方法，包括如下步骤：
1)将竹浆、龙须草浆、针叶木浆和棉桨均分别经过盐酸和氢氟酸处理，并经过蒸馏水洗涤得到的浆料。
2)按配料量将经过步骤1)处理的竹浆料、龙须草浆料、针叶木浆料和棉浆料加水进行混合在超高压微射流纳米分散机的作用下进行剥离、撕裂成直径为15～100nm之间，长度在200nm～20微米的纤维素纳米纤维浆料，所述的浆料中含纤维素纳米纤维的重量百分比为10％；
3)将配料量的纳米纤维素晶体分散在水中得到稳定的纳米纤维素晶体胶体，其中该纳米纤维素晶体胶体的纳米纤维素晶体的质量分数为3％；
4)将步骤2)所得的纤维素纳米纤维浆料、步骤3)得到的纳米纤维素晶体胶体、木质素、分散剂、消泡剂和湿强剂再于打浆机中进行打浆得到成浆，成浆的打浆浓度为3.5％，打浆度30°SR，湿重6g的成浆；
5)将步骤4)得到的成浆按常规条件上网抄造造、压榨和烘干，获得纳米定量滤纸；
6)将纳米定量滤纸进行卷曲、分切，获得成品纸。
实施例2
纳米量性滤纸，按重量份数计，包括竹浆：80份，龙须草浆：40份，针叶木浆：80份，棉桨：80份，木质素：5份，纳米纤维素晶体：5份，分散剂：0.2份份，消泡剂：0.3份，湿强剂：3份。
所述的分散剂为阴离子型聚丙烯酰胺；所述的消泡剂为硅油；所述的竹浆为经过200目的筛网得到的竹浆；所述的竹浆、龙须草浆、针叶木浆和棉桨均需分别经过盐酸和氢氟酸处理，并经过蒸馏水洗涤得到的浆料。
上述纳米定量滤纸的制备方法，包括如下步骤：
1)将竹浆、龙须草浆、针叶木浆和棉桨均分别经过盐酸和氢氟酸处理，并经过蒸馏水洗涤得到的浆料。
2)按配料量将经过步骤1)处理的竹浆料、龙须草浆料、针叶木浆料和棉浆料加水进行混合在超高压微射流纳米分散机的作用下进行剥离、撕裂成直径为15～100nm之间，长度在200nm～20微米的纤维素纳米纤维浆料，所述的浆料中含纤维素纳米纤维的重量百分比为30％；
3)将配料量的纳米纤维素晶体分散在水中得到稳定的纳米纤维素晶体胶体，其中该纳米纤维素晶体胶体的纳米纤维素晶体的质量分数为8％；
4)将步骤2)所得的纤维素纳米纤维浆料、步骤3)得到的纳米纤维素晶体胶体、木质素、分散剂、消泡剂和湿强剂再于打浆机中进行打浆得到成浆，成浆的打浆浓度为4.5％，打浆度50°SR，湿重8g的成浆；
5)将步骤4)得到的成浆按常规条件上网抄造造、压榨和烘干，获得纳米定量滤纸；
6)将纳米定量滤纸进行卷曲、分切，获得成品纸。
实施例3
纳米量性滤纸，按重量份数计，包括竹浆：60份，龙须草浆：25份，针叶木浆：50份，棉桨：60份，木质素：2.5份，纳米纤维素晶体：3份，分散剂：0.5份，消泡剂：0.2份，湿强剂2.0份。
所述的分散剂为聚氧乙烯；所述的消泡剂为松油；所述的竹浆为经过200目的筛网得到的竹浆；所述的竹浆、龙须草浆、针叶木浆和棉桨均需分别经过盐酸和氢氟酸处理，并经过蒸馏水洗涤得到的浆料。
上述纳米定量滤纸的制备方法，包括如下步骤：
1)将竹浆、龙须草浆、针叶木浆和棉桨均分别经过盐酸和氢氟酸处理，并经过蒸馏水洗涤得到的浆料。
2)按配料量将经过步骤1)处理的竹浆料、龙须草浆料、针叶木浆料和棉浆料加水进行混合在超高压微射流纳米分散机的作用下进行剥离、撕裂成直径为15～100nm之间，长度在200nm～20微米的纤维素纳米纤维浆料，所述的浆料中含纤维素纳米纤维的重量百分比为26％；
3)将配料量的纳米纤维素晶体分散在水中得到稳定的纳米纤维素晶体胶体，其中该纳米纤维素晶体胶体的纳米纤维素晶体的质量分数为6％；
4)将步骤2)所得的纤维素纳米纤维浆料、步骤3)得到的纳米纤维素晶体胶体、木质素、分散剂、消泡剂和湿强剂再于打浆机中进行打浆得到成浆，成浆的打浆浓度为4.0％，打浆度40°SR，湿重7g的成浆；
5)将步骤4)得到的成浆按常规条件上网抄造造、压榨和烘干，获得纳米定量滤纸；
6)将纳米定量滤纸进行卷曲、分切，获得成品纸。
上述实施例制得的纳米定量技术指标如下表所示：

Claims (7)

1.纳米定量滤纸，其特征在于按重量份数计，包括以下组分：
2.根据权利要求1所述的纳米定量滤纸，其特征在于所述的分散剂为聚氧乙烯和/或阴离子型聚丙烯酰胺。
3.根据权利要求1所述的纳米定量滤纸，其特征在于所述的消泡剂选自丁醇、辛醇、硅油或松油的一种或多种。
4.根据权利要求1所述的纳米定量滤纸，其特征在于所述的竹浆为经过200目的筛网得到的竹浆。
5.根据权利要求1所述的纳米定量滤纸，其特征在于所述的竹浆、龙须草浆、针叶木浆和棉桨均需分别经过盐酸和氢氟酸处理，并经过蒸馏水洗涤得到的浆料。
6.根据权利要求1所述的纳米定量滤纸，其特征在于所述的纳量定量滤纸的定量为40±2g/㎡，厚度为1.0±0.1mm。
7.一种如权利要求1至6任一所述的纳米定量滤纸的制备方法，其特征在于包括如下步骤：
1)将竹浆、龙须草浆、针叶木浆和棉桨均分别经过盐酸和氢氟酸处理，并经过蒸馏水洗涤得到的浆料。
2)按配料量将经过步骤1)处理的竹浆料、龙须草浆料、针叶木浆料和棉浆料加水进行混合在超高压微射流纳米分散机的作用下进行剥离、撕裂成直径为15～100nm之间，长度在200nm～20微米的纤维素纳米纤维浆料，所述的浆料中含纤维素纳米纤维的重量百分比为10～30％；
3)将配料量的纳米纤维素晶体分散在水中得到稳定的纳米纤维素晶体胶体，其中该纳米纤维素晶体胶体的纳米纤维素晶体的质量分数为3～8％；
4)将步骤2)所得的纤维素纳米纤维浆料、步骤3)得到的纳米纤维素晶体胶体、木质素、分散剂、消泡剂和湿强剂再于打浆机中进行打浆得到成浆，成浆的打浆浓度为3.5-4.5％， 打浆度30-50°SR，湿重6-8g的成浆；
5)将步骤4)得到的成浆按常规条件上网抄造造、压榨和烘干，获得纳米定性滤纸；
6)将纳米定性滤纸进行卷曲、分切，获得成品纸。
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