CN107022924B - 一种浸渍液及其制备的透明纸张与快速制备透明纸张的方法 - Google Patents

一种浸渍液及其制备的透明纸张与快速制备透明纸张的方法 Download PDF

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CN107022924B
CN107022924B CN201710265468.7A CN201710265468A CN107022924B CN 107022924 B CN107022924 B CN 107022924B CN 201710265468 A CN201710265468 A CN 201710265468A CN 107022924 B CN107022924 B CN 107022924B
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陈港
朱朋辉
张俊奇
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Guangdong Huashun Material Technology Co.,Ltd.
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Abstract

本发明公开了一种浸渍液及其制备的透明纸张与快速制备透明纸张的方法。本发明的浸渍液包括组分：透明剂、表面活性剂、抗水剂和润滑剂。本发明快速制备透明纸张的方法，包括步骤：将原纸置于浸渍液中浸渍，取出，然后将浸渍后的纸张紧密贴合在两张薄膜材料中间，利用挤压装置将多余的浸渍液挤出，接着将浸渍纸张与薄膜材料分离，浸渍纸张烘干后进一步压光处理，得到所述透明纸张。本发明的浸渍液具有原料简单、来源丰富、易于制备的特点。本发明的制备方法具有操作工艺简便、易于工业化生产的优势。本发明制备的纸张具有良好的透明度，同时也具有优异的拉伸强度、耐破度、阻隔性能和抗水性能。

Description

一种浸渍液及其制备的透明纸张与快速制备透明纸张的方法
技术领域
本发明属于透明纸张技术领域，尤其涉及一种浸渍液及其制备的透明纸张与快速制备透明纸张的方法。
背景技术
透明纸是一种具有优异透明度的特种纸，市场上常见的仿羊皮纸、玻璃纸、描图纸、格拉辛纸都属于透明纸。透明纸作为一种新兴的高性能透明衬底，具有低碳环保、可卷曲、可加工温度高、印刷适性好等优点。因具有可持续发展、原料易得和抄纸方便、生物相容性和降解性、利于卷对卷印刷制作、优异的光学、力学以及阻隔性能等优势，已经广泛应用于食品包装、地图、可剥离标签纸、高档包装、装裱等领域。
目前透明纸张的制备方法主要有以下几种：（1）采用高打浆度的天然纤维抄造而成。这种方法多用在描图纸的生产中，目前国内生产描图纸的传统方法是由漂白的硫酸盐木浆，经过高黏度打浆，然后进行施胶，再在长网纸机上抄造而成；（2）通过将纸张浸渍到树脂、矿物油、清漆、树胶及其混合物中，进而填充纸页内部的孔隙使纸张变得透明；（3）采用化学试剂将纸张表面的纤维素部分溶解，填充纤维内部空隙获得透明纸张；（4）采用纤维素溶剂将纤维素完全溶解、再生而成透明薄膜；（5）以分散的纳米纤丝化纤维素为基本原料制备透明纸。第一种方法应用于透明纸的工业化制备，但纤维的高度打浆和超压处理能耗较高，使得制备的成本较高。而采用浸渍法制备透明纸，该法简单易行，利于规模化生产，研究者们对此也做了诸多研究。例如：李洪等人采用乳液聚合法合成丙烯酸树脂类纸张透明剂制备透明纸，但其中涉及到聚合反应，所需原料种类较多，反应时间较长，且所制备的透明纸透明度较低，无法满足实际需求（李洪, 李新平. 添加苯乙烯对合成丙烯酸树脂类纸张透明剂的影响[J]. 陕西科技大学学报 (自然科学版), 2007, 25(4): 1-5.）。马晓博采用自制的透明剂制备透明纸，但他所制备的透明纸透明度较低，而且浸渍后纸张的耐破度下降较多，不利于实际中的应用（马晓博. GWT 纸用透明剂及其应用研究[D]. 天津科技大学, 2013.）。国外学者Petrosky Linda M采用马来酸酯、乙烯单体和烯丙基化合物组成的透明剂制备透明纸，但所需的浸渍时间较长，并且需要在紫外线的作用下固化，反应条件苛刻，不利于工业化生产（Petrosky L M. Transparentized medium and process formaking same: U.S. Patent 5,849,398[P]. 1998-12-15.）。同时，研究者们对透明纸张的其他制备方法也进行了一些研究：如采用纤维素溶剂、纤维素均相溶液以及离子液体等制备透明纸。但以上方法所涉及的工艺过程较为复杂，成本较高，不利于规模化生产。
因此，研发出一种透明纸张及其快速制备方法，用于解决现有技术中存在制备工艺和程序相对复杂，制备成本较高，不易实现工业化的技术缺陷，成为本领域技术人员亟待解决的问题。
发明内容
本发明针对现有技术的不足，提供了一种浸渍液，用于制备透明纸张，所提供的浸渍液具有原料简单、来源丰富、易于制备的特点。
本发明提供了一种采用所述浸渍液快速制备透明纸张的方法及其制备的透明纸张，用于解决现有技术中存在的缺陷，所提供的制备方法具有操作工艺简便、易于工业化生产的优势。所制备的纸张具有良好的透明度，同时也具有优异的拉伸强度、耐破度、阻隔性能和抗水性能。在原纸定量为25-70 g/m2，紧度为0.5-1.3 g/cm3时，所制备透明纸的透明度为50-85%，拉伸强度为20-90 MPa，耐破度为200-1100 kPa，透气度为0-70 ml/min，Cobb60为1-15 g/m2。
本发明通过如下技术方案实现。
一种浸渍液，包括：透明剂、表面活性剂、抗水剂和润滑剂。
优选的，以质量份计，所述浸渍液包括透明剂100份、表面活性剂0.3-0.8份、抗水剂0.5-1.0份和润滑剂0.8-1.8份。
优选的，所述透明剂为环氧树脂、酚醛树脂、脲醛树脂、三聚氰胺树脂、丙烯酸树脂、丁苯树脂和水性聚氨酯中的一种或多种。
优选的，所述表面活性剂为烷基醇醚羧酸盐、烷基磷羧酸盐、烷基磺酸钠、仲烷基磺酸钠、烷基苯磺酸钠、烷基硫酸酯钠、仲烷基硫酸酯钠、氨基磺酸钠、高级脂肪醇硫酸酯、脂肪酸甘油酯、脂肪酸山梨坦、聚山梨酯、蔗糖酯、硫酸化蓖麻油、脂肪醇聚氧乙烯醚、烷基酚聚氧乙烯醚、烷基萘磺酸钠、琥珀酸烷基酯磺酸钠、醇类化合物、磷酸酯类化合物，酮类化合物和醚类化合物中的一种或多种。
优选的，所述抗水剂为脲醛树脂、三聚氰胺甲醛树脂、碳酸锆铵、聚酰胺多胺环氧氯丙烷树脂和聚肽胺聚脲甲醛树脂中的一种或多种。
优选的，所述润滑剂为硬脂酸钙、硬脂酸铵、硬脂酸钠、油酸钾、硫酸化蓖麻油、硫酸化油酸、脂肪酸、石蜡、聚氧化乙烯蜡、合成石蜡、聚乙二醇、聚乙二醇醚和大豆卵磷酯中的一种或多种。
一种采用所述的浸渍液快速制备透明纸张的方法，包括如下步骤：
将原纸置于浸渍液中浸渍，取出，然后将浸渍后的纸张紧密贴合在两张薄膜材料中间，利用挤压装置将多余的浸渍液挤出，接着将浸渍纸张与薄膜材料分离，浸渍纸张烘干后进一步压光处理，得到所述透明纸张。
优选的，所述原纸为漂白针叶木浆、漂白阔叶木浆、漂白非木浆、漂白废纸浆、绒毛浆以及棉浆抄造而成的纸张，包括描图纸、包装纸、毛边纸、邮封纸、书写纸、复印纸、装饰纸或空气过滤纸的一种，定量为25-70 g/m2，紧度为0.5-1.3 g/cm3。
优选的，所述浸渍液的固含量为10-40%。
优选的，所述浸渍的时间为5-30 s，浸渍量为20-100%。
优选的，所述薄膜材料为铜箔、聚对苯二甲酸乙二醇酯高分子薄膜材料、铝箔、聚丙烯薄膜、聚乙烯薄膜、淋膜纸、BOPP和尼龙薄膜中的一种。
优选的，所述挤压装置为液压机、辊式挤压机中的一种。
优选的，所述烘干方式为热风干燥、红外干燥、烘缸干燥中的一种，烘干的温度为70-120 ℃。
优选的，所述压光处理的压力为2-10 MPa。
一种由上述任一项所述的制备方法制备的透明纸张，透明度为50-85%，拉伸强度为20-90 MPa，耐破度为200-1100 kPa，透气度为0-70 ml/min，Cobb60为1-15 g/m2。
与现有技术相比，本发明具有如下优点和有益效果：
（1）本发明的浸渍液具有原料简单、来源丰富、易于制备的特点；
（2）本发明的制备方法具有操作工艺简便、易于工业化生产的优势，用于解决现有技术中存在的缺陷；
（2）本发明制备的纸张具有良好的透明度，同时也具有优异的拉伸强度、耐破度、阻隔性能和抗水性能；在原纸定量为25-70 g/m2，紧度为0.5-1.3 g/cm3时，所制备透明纸的透明度为50-85%，拉伸强度为20-90 MPa，耐破度为200-1100 kPa，透气度为0-70 ml/min，Cobb60为1-15 g/m2。
附图说明
图1为实施例1中所使用原纸的扫描电镜图；
图2为实施例1中所制备的透明纸的扫描电镜图。
具体实施方式
为了更详细说明本发明，下面结合实施例对本发明进行具体地描述，但本发明不限于此。
下面将对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明提供了一种浸渍液及其制备的透明纸张与快速制备透明纸张的方法，用于解决现有技术中存在制备工艺和程序相对复杂，制备成本较高，不易实现工业化的技术缺陷。
本发明所述的浸渍液包括透明剂、表面活性剂、抗水剂和润滑剂，其制备方法如下：将100份透明剂、0.3-0.8份表面活性剂、0.5-1.0份抗水剂和0.8-1.8份润滑剂相互混合，在300-600 rpm转速下搅拌20-30 min，得到浸渍液。
本发明快速制备透明纸张的方法，其步骤如下：
（1）提供初始的原纸；
（2）配制浸渍液；
（3）将原纸置于浸渍液中浸渍，取出，然后将浸渍后的纸张紧密贴合在两张薄膜材料中间，利用挤压装置将多余的浸渍液挤出；
（4）将浸渍纸张与薄膜材料分离，浸渍纸张烘干后进一步压光处理，得到透明纸张。
本发明快速制备透明纸张的方法具有操作工艺简便、易于工业化生产等优点。所制备的纸张具有良好的透明度，同时也具有优异的拉伸强度、耐破度、阻隔性能和抗水性能。在原纸定量为25-70 g/m2，紧度为0.5-1.3 g/cm3时，所制备透明纸的透明度为50-85%，拉伸强度为20-90 MPa，耐破度为200-1100 kPa，透气度为0-70 ml/min，Cobb60为1-15 g/m2。
下面通过具体实例对本发明做进一步的说明。
实施例1
一种透明纸张的制备，步骤如下：
原纸采用定量为25 g/m2包装纸，紧度为0.5 g/cm3，原纸的扫描电镜图如图1所示，由图1可知，原纸纤维之间相互交织缠绕，具有较多孔隙。
浸渍液：透明剂500 g、表面活性剂 1.5 g、抗水剂2.5 g和润滑剂4 g；所述透明剂为丙烯酸树脂，表面活性剂为脂肪醇聚氧乙烯醚，抗水剂为脲醛树脂，润滑剂为硬脂酸钙；浸渍液固含量为10%。
制备过程：
将原纸置于浸渍液中浸渍，浸渍时间为10 s，浸渍量为20%，取出，然后将浸渍后的纸张紧密贴合在两张薄膜材料中间，采用的薄膜材料为淋膜纸，利用挤压装置将多余的浸渍液挤出，采用的挤压装置为辊式挤压机；
接着将浸渍纸张与薄膜材料分离，浸渍纸张烘干后进一步压光处理，热风干燥温度为70 ℃，压光处理的压力为2 MPa，得到透明纸张。
制备的透明纸张的扫描电镜图如图2所示，由图2可知，经过本发明的技术处理后，原纸纤维之间的空隙得到有效填充。
所制备的透明纸张经测试，透明度为72.9%，拉伸强度为20 MPa，耐破度为200kPa，透气度为70 ml/min，Cobb60为15 g/m2。
实施例2
一种透明纸张的制备，步骤如下：
原纸采用定量为40 g/m2描图纸，紧度为0.9 g/cm3。
浸渍液：透明剂500 g、表面活性剂 2.5 g、抗水剂3.5 g和润滑剂5 g；所述透明剂为环氧树脂，表面活性剂为脂肪酸甘油酯，抗水剂为碳酸锆铵，润滑剂为油酸钾；浸渍液固含量为25%。
制备过程：
将原纸置于浸渍液中浸渍，浸渍时间为5 s，浸渍量为60%，取出，然后将浸渍后的纸张紧密贴合在两张薄膜材料中间，采用的薄膜材料为聚乙烯薄膜，利用挤压装置将多余的浸渍液挤出，采用的挤压装置为液压机；
接着将浸渍纸张与薄膜材料分离，浸渍纸张烘干后进一步压光处理，热风干燥温度为80 ℃，压光处理的压力为4 MPa，得到透明纸张。
所制备的透明纸张经测试，透明度为79%，拉伸强度为57.9 MPa，耐破度为560.2kPa，透气度为18.9 ml/min，Cobb60为13.3 g/m2。
实施例3
一种透明纸张的制备，步骤如下：
原纸采用定量为65 g/m2书写纸，紧度为1.3 g/cm3。
浸渍液：透明剂500 g、表面活性剂 4 g、抗水剂4 g和润滑剂6 g；所述透明剂为脲醛树脂，表面活性剂为聚山梨酯，抗水剂为三聚氰胺甲醛树脂，润滑剂为聚乙二醇；浸渍液固含量为40%。
制备过程：
将原纸置于浸渍液中浸渍，浸渍时间为20 s，浸渍量为80%，取出，然后将浸渍后的纸张紧密贴合在两张薄膜材料中间，采用的薄膜材料为BOPP，利用挤压装置将多余的浸渍液挤出，采用的挤压装置为液压机；
接着将浸渍纸张与薄膜材料分离，浸渍纸张烘干后进一步压光处理，烘缸干燥温度为100 ℃，压光处理的压力为8 MPa，得到透明纸张。
所制备的透明纸张经测试，透明度为50%，拉伸强度为71.5 MPa，耐破度为452kPa，透气度为5.4 ml/min，Cobb60为5.2 g/m2。
实施例4
一种透明纸张的制备，步骤如下：
原纸采用定量为70 g/m2装饰纸，紧度为1.0 g/cm3。
浸渍液：透明剂500 g、表面活性剂 3.5 g、抗水剂5 g和润滑剂9 g；所述透明剂为丙烯酸树脂，表面活性剂为烷基硫酸酯钠，抗水剂为碳酸锆铵，润滑剂为硫酸化蓖麻油；浸渍液固含量为30%。
制备过程：
将原纸置于浸渍液中浸渍，浸渍时间为30 s，浸渍量为100%，取出，然后将浸渍后的纸张紧密贴合在两张薄膜材料中间，采用的薄膜材料为聚丙烯薄膜，利用挤压装置将多余的浸渍液挤出，采用的挤压装置为辊式挤压机；
接着将浸渍纸张与薄膜材料分离，浸渍纸张烘干后进一步压光处理，红外干燥温度为120 ℃，压光处理的压力为10 MPa，得到透明纸张。
所制备的透明纸张经测试，透明度为85%，拉伸强度为90 MPa，耐破度为1100 kPa，透气度为0 ml/min，Cobb60为1.0 g/m2。
综上所述，本发明提供了一种浸渍液，所述浸渍液包括：透明剂、表面活性剂、抗水剂和润滑剂。本发明还提供了一种上述浸渍液快速制备透明纸张的方法，所述制备方法为：将原纸置于浸渍液中，然后将浸渍纸张紧密贴合在两张薄膜材料中，利用挤压装置将多余的浸渍液挤出，接着将浸渍纸张与薄膜材料分离，浸渍纸张烘干后进一步压光处理得到透明纸张。所提供的浸渍液具有原料简单、来源丰富、易于制备的特点。所提供的制备方法具有操作工艺简便、易于工业化生产的优势。所制备的纸张具有良好的透明度，同时也具有优异的拉伸强度、耐破度、阻隔性能和抗水性能。在原纸定量为25-70 g/m2，紧度为0.5-1.3g/cm3时，所制备透明纸的透明度为50-85%，拉伸强度为20-90 MPa，耐破度为200-1100kPa，透气度为0-70 ml/min，Cobb60为1-15 g/m2。解决了现有技术中存在制备工艺和程序相对复杂，制备成本较高，不易实现工业化的技术缺陷。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (3)

1.一种采用浸渍液快速制备透明纸张的方法，其特征在于，包括如下步骤：
将原纸置于浸渍液中浸渍，取出，然后将浸渍后的纸张紧密贴合在两张薄膜材料中间，利用挤压装置将多余的浸渍液挤出，接着将浸渍纸张与薄膜材料分离，浸渍纸张烘干后进一步压光处理，得到所述透明纸张；
以质量份计，所述浸渍液包括透明剂100份、表面活性剂0.3-0.8份、抗水剂0.5-1.0份和润滑剂0.8-1.8份；
所述透明剂为脲醛树脂、丙烯酸树脂、丁苯树脂和水性聚氨酯中的一种或多种；
所述表面活性剂为烷基醇醚羧酸盐、烷基磷羧酸盐、烷基磺酸钠、仲烷基磺酸钠、烷基苯磺酸钠、烷基硫酸酯钠、仲烷基硫酸酯钠、氨基磺酸钠、高级脂肪醇硫酸酯、脂肪酸甘油酯、脂肪酸山梨坦、聚山梨酯、蔗糖酯、硫酸化蓖麻油、脂肪醇聚氧乙烯醚、烷基酚聚氧乙烯醚、烷基萘磺酸钠、琥珀酸烷基酯磺酸钠、醇类化合物、磷酸酯类化合物，酮类化合物和醚类化合物中的一种或多种；
所述抗水剂为脲醛树脂、三聚氰胺甲醛树脂、碳酸锆铵、聚酰胺多胺环氧氯丙烷树脂和聚肽胺聚脲甲醛树脂中的一种或多种；
所述润滑剂为硬脂酸钙、硬脂酸铵、硬脂酸钠、油酸钾、硫酸化蓖麻油、硫酸化油酸、脂肪酸、石蜡、聚氧化乙烯蜡、合成石蜡、聚乙二醇、聚乙二醇醚和大豆卵磷酯中的一种或多种；
所述浸渍液为将所述质量份数的透明剂、表面活性剂、抗水剂和润滑剂相互混合，在300-600 rpm转速下搅拌20-30 min得到；
所述薄膜材料为铜箔、聚对苯二甲酸乙二醇酯高分子薄膜材料、铝箔、聚丙烯薄膜、聚乙烯薄膜、淋膜纸、BOPP和尼龙薄膜中的一种；所述挤压装置为液压机、辊式挤压机中的一种；所述烘干方式为热风干燥、红外干燥、烘缸干燥中的一种，烘干的温度为70-120 ℃；所述压光处理的压力为2-10 MPa。
2.根据权利要求1所述的方法，其特征在于，所述原纸为漂白针叶木浆、漂白阔叶木浆、漂白非木浆、漂白废纸浆、绒毛浆以及棉浆抄造而成的纸张，包括描图纸、包装纸、毛边纸、邮封纸、书写纸、复印纸、装饰纸或空气过滤纸的一种，定量为25-70 g/m2，紧度为0.5-1.3g/cm3；所述浸渍液的固含量为10-40%；所述浸渍的时间为5-30 s，浸渍量为20-100%。
3.一种由权利要求1~2任一项所述的方法制备的透明纸张，其特征在于，透明度为50-85%，拉伸强度为20-90 MPa，耐破度为200-1100 kPa，透气度为0-70 ml/min，Cobb60为1-15g/m2。
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