CN108373890A - 一种新型离型纸及其制备方法 - Google Patents

一种新型离型纸及其制备方法 Download PDF

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CN108373890A
CN108373890A CN201810113968.3A CN201810113968A CN108373890A CN 108373890 A CN108373890 A CN 108373890A CN 201810113968 A CN201810113968 A CN 201810113968A CN 108373890 A CN108373890 A CN 108373890A
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沈宝善
沈园园
陈玲令
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HUNAN FUTAI DIGITAL MATERIAL TECHNOLOGY CO LTD
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Abstract

本发明公开了一种新型离型纸，基材23‑35份，高分子聚合物10‑15份，增塑剂1.7‑3.7份，防粘剂0.5‑1份，润滑剂1‑2份，发泡剂0.1‑0.5份，活性剂0.7‑1.5份。本发明的目的是提供一种新型离型纸，提高离型纸的张力，采用硬脂酸增加离型纸的韧性，使其纸张在收卷过程中，能够紧密贴合，无挪动移位现象，且不会被拉断。

Description

一种新型离型纸及其制备方法
技术领域
本发明属于一种离型纸，具体涉及一种新型离型纸及其制备方法。
背景技术
离型纸又称隔离纸、防粘纸，主要贴覆在胶带的表面用于保护胶带表面的胶粘剂层。传统的离型纸是由原纸、隔离层和防粘层组成。其制备工艺是在离型纸的底纸表面淋膜一层隔离剂( 隔离剂主要是聚乙烯)，然后在淋膜层的表面涂布一层防粘剂( 防粘剂主要为硅油) 得到离型纸。
现有工艺生产的离型纸需要大量的底纸，底纸是用木浆制作的，由于木材的成材需要时间，随着木材的大量砍伐，木浆将慢慢紧缺，因此原纸的成本将不断上升，而且造纸能耗高、污染大，不利于环境保护。而且，正常的离型纸需经过三道工序，每道工序消耗大量的能量，生产成本需要用到大量的硅油，硅油较贵，硅油大多采用有机溶剂稀释，这些有机溶剂易挥发、有毒性、难以完全回收利用，不利于环境保护。
另外，现有的离型纸纸张，如果张力过大，那么纸张在收卷过程中就会被拉断；反之，张力过小，会造成收卷松松垮垮的，边缘不整齐。
发明内容
本发明的目的是提供一种新型离型纸，提高离型纸的张力，采用硬脂酸增加离型纸的韧性，使其纸张在收卷过程中，能够紧密贴合，无挪动移位现象，且不会被拉断。
为实现以上目的，本发明采用的技术方案是：一种新型离型纸，包括下述重量份的组分：基材23-35份，高分子聚合物10-15份，增塑剂1.7-3.7份，防粘剂0.5-1份，润滑剂1-2份，发泡剂 0.1-0.5 份，活性剂0.7-1.5份。
优选的，所述基材包括：稻草粉20-30份，石棉粉3-5份。
优选的，所述高分子聚合物包括：聚乙烯醇5-7份，聚乳酸2-3份，聚氯乙烯3-5份。
优选的，所述增塑剂包括：羟乙基纤维素1-2份， 1 ,6-己二醇0.3-0.7份，三乙醇胺0.3-0.7份，苯甲酸0.1-0.3份。
优选的，所述防粘剂为硅油。
优选的，所述润滑剂包括：氯化石蜡0.5-1份，聚乙烯蜡0.5-1份。
优选的，所述发泡剂为偶氮二甲酰胺。
优选的，所述活性剂包括：木薯粉0.5-1份，硬脂酸0.2-0.5份。
一种新型离型纸制备方法，包括如下步骤：
1）基材制备：将稻草粉、石棉粉，分别放置冷冻室冷冻处理，冷冻温度-5-0℃，冷冻时间8-12h，然后从冷冻室取出，在3min内迅速采用粉碎机将结块的稻草粉、石棉粉粉碎，并混合均匀，晾置室温，再与碳酸锂混合，研磨，制得混合基材粉末；
2）在高速混合机中，先加入基材，升温至80-120℃，再投入活性剂和发泡剂，进行搅拌，搅拌时间15-30min；
3）将高分子聚合物、润滑剂、增塑剂加入，进行搅拌，搅拌时间15-30min，待混合均匀后，加入防粘剂，继续搅拌至均匀成混合料；将该混合料送入纸膜设备，在170-220℃条件下混合料成熔融态并由纸膜机模头充气制成纸膜，经圆轴碾压后，冷却得到离型纸。
本发明的有益效果：
（1）本发明采用稻草粉，提高离型纸的张力，采用硬脂酸增加离型纸的韧性，使其纸张在收卷过程中，能够紧密贴合，无挪动移位现象，且不会被拉断。本发明经过测试，离型纸纸张张力为400-500N（1000g），定量为180-200g/m2,现有的离型纸纸张张力一般为300-350N（1000g），定量为220-250 g/m2，因此，本发明的改进尤为显著。
（2）稻草粉为易然物质，本发明将稻草粉与石棉粉分别冷冻，再迅速粉碎，混合，是为了防止因温度过高而引起自燃。
（3）羟乙基纤维素， 1 ,6-己二醇，三乙醇胺，苯甲酸相互协同，具有增塑效果， 此外，1 ,6-己二醇与苯甲酸相互作用，能够缩短离型纸的成型时间，提高工业生产效率。
（4）本发明采用氯化石蜡，聚乙烯蜡既能起到内润滑的作用，也能起到外润滑的效果。
（5）木薯粉与硬脂酸相互作用，还能起到活性剂的作用。
具体实施方式
为了使本领域技术人员更好地理解本发明的技术方案，下面对本发明进行详细描述，本部分的描述仅是示范性和解释性，不应对本发明的保护范围有任何的限制作用。
以下是具体实施例
实施例1
一种新型离型纸，包括下述重量份的组分：基材23份，高分子聚合物10份，增塑剂1.7份，防粘剂0.5份，润滑剂1份，发泡剂 0.1 份，活性剂0.7份。
所述基材包括：稻草粉20份，石棉粉3份。
所述高分子聚合物包括：聚乙烯醇5份，聚乳酸2份，聚氯乙烯3份。
所述增塑剂包括：羟乙基纤维素1份， 1 ,6-己二醇0.3份，三乙醇胺0.3份，苯甲酸0.1份。
所述防粘剂为硅油。
所述润滑剂包括：氯化石蜡0.5份，聚乙烯蜡0.5份。
所述发泡剂为偶氮二甲酰胺。
所述活性剂包括：木薯粉0.5份，硬脂酸0.2份。
一种新型离型纸制备方法，包括如下步骤：
1）基材制备：将稻草粉、石棉粉，分别放置冷冻室冷冻处理，冷冻温度-5℃，冷冻时间8h，然后从冷冻室取出，在3min内迅速采用粉碎机将结块的稻草粉、石棉粉粉碎，并混合均匀，晾置室温，再与碳酸锂混合，研磨，制得混合基材粉末；
2）在高速混合机中，先加入基材，升温至80℃，再投入活性剂和发泡剂，进行搅拌，搅拌时间15min；
3）将高分子聚合物、润滑剂、增塑剂加入，进行搅拌，搅拌时间15-30min，待混合均匀后，加入防粘剂，继续搅拌至均匀成混合料；将该混合料送入纸膜设备，在170℃条件下混合料成熔融态并由纸膜机模头充气制成纸膜，经圆轴碾压后，冷却得到离型纸。
实施例2
一种新型离型纸，包括下述重量份的组分：基材35份，高分子聚合物15份，增塑剂3.7份，防粘剂1份，润滑剂2份，发泡剂 0.5 份，活性剂1.5份。
所述基材包括：稻草粉30份，石棉粉5份。
所述高分子聚合物包括：聚乙烯醇7份，聚乳酸3份，聚氯乙烯5份。
所述增塑剂包括：羟乙基纤维素2份， 1 ,6-己二醇0.7份，三乙醇胺0.7份，苯甲酸0.3份。
所述防粘剂为硅油。
所述润滑剂包括：氯化石蜡1份，聚乙烯蜡1份。
所述发泡剂为偶氮二甲酰胺。
所述活性剂包括：木薯粉1份，硬脂酸0.5份。
一种新型离型纸制备方法，包括如下步骤：
1）基材制备：将稻草粉、石棉粉，分别放置冷冻室冷冻处理，冷冻温度0℃，冷冻时间12h，然后从冷冻室取出，2min迅速采用粉碎机将结块的稻草粉、石棉粉粉碎，并混合均匀，晾置室温，再与碳酸锂混合，研磨，制得混合基材粉末；
2）在高速混合机中，先加入基材，升温至120℃，再投入活性剂和发泡剂，进行搅拌，搅拌时间30min；
3）将高分子聚合物、润滑剂、增塑剂加入，进行搅拌，搅拌时间30min，待混合均匀后，加入防粘剂，继续搅拌至均匀成混合料；将该混合料送入纸膜设备，在220℃条件下混合料成熔融态并由纸膜机模头充气制成纸膜，经圆轴碾压后，冷却得到离型纸。
实施例3
一种新型离型纸，包括下述重量份的组分：基材24份，高分子聚合物12份，增塑剂2.7份，防粘剂0.5-1份，润滑剂1.5份，发泡剂0.2份，活性剂1份。
所述基材包括：稻草粉25份，石棉粉4份。
所述高分子聚合物包括：聚乙烯醇6份，聚乳酸2.5份，聚氯乙烯3.5份。
所述增塑剂包括：羟乙基纤维素1.5份， 1 ,6-己二醇0.5份，三乙醇胺0.5份，苯甲酸0.2份。
所述防粘剂为硅油。
所述润滑剂包括：氯化石蜡0.7份，聚乙烯蜡0.8份。
所述发泡剂为偶氮二甲酰胺。
所述活性剂包括：木薯粉0.7份，硬脂酸0.3份。
一种新型离型纸制备方法，包括如下步骤：
1）基材制备：将稻草粉、石棉粉，分别放置冷冻室冷冻处理，冷冻温度-2℃，冷冻时间10h，然后从冷冻室取出，在3min内迅速采用粉碎机将结块的稻草粉、石棉粉粉碎，并混合均匀，晾置室温，再与碳酸锂混合，研磨，制得混合基材粉末；
2） 在高速混合机中，先加入基材，升温至100℃，再投入活性剂和发泡剂，进行搅拌，搅拌时间20min；
3）将高分子聚合物、润滑剂、增塑剂加入，进行搅拌，搅拌时间20min，待混合均匀后，加入防粘剂，继续搅拌至均匀成混合料；将该混合料送入纸膜设备，在200℃条件下混合料成熔融态并由纸膜机模头充气制成纸膜，经圆轴碾压后，冷却得到离型纸。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。
本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实例的说明只是用于帮助理解本发明的方法及其核心思想。以上所述仅是本发明的优选实施方式，应当指出，由于文字表达的有限性，而客观上存在无限的具体结构，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、润饰或变化，也可以将上述技术特征以适当的方式进行组合；这些改进润饰、变化或组合，或未经改进将发明的构思和技术方案直接应用于其它场合的，均应视为本发明的保护范围。

Claims (9)

1.一种新型离型纸，其特征在于，包括下述重量份的组分：基材23-35份，高分子聚合物10-15份，增塑剂1.7-3.7份，防粘剂0.5-1份，润滑剂1-2份，发泡剂 0.1-0.5 份，活性剂0.7-1.5份。
2.根据权利要求1所述的一种新型离型纸，其特征在于，所述基材包括：稻草粉20-30份，石棉粉3-5份。
3.根据权利要求1所述的一种新型离型纸，其特征在于，所述高分子聚合物包括：聚乙烯醇5-7份，聚乳酸2-3份，聚氯乙烯3-5份。
4.根据权利要求1所述的一种新型离型纸，其特征在于，所述增塑剂包括：羟乙基纤维素1-2份， 1 ,6-己二醇0.3-0.7份，三乙醇胺0.3-0.7份，苯甲酸0.1-0.3份。
5.根据权利要求1所述的一种新型离型纸，其特征在于，所述防粘剂为硅油。
6.根据权利要求1所述的一种新型离型纸，其特征在于，所述润滑剂包括：氯化石蜡0.5-1份，聚乙烯蜡0.5-1份。
7.根据权利要求1所述的一种新型离型纸，其特征在于，所述发泡剂为偶氮二甲酰胺。
8.根据权利要求1所述的一种新型离型纸，其特征在于，所述活性剂包括：木薯粉0.5-1份，硬脂酸0.2-0.5份。
9.如权利要求1-8所述的任意一种新型离型纸制备方法，其特征在于，包括如下步骤：
基材制备：将稻草粉、石棉粉，分别放置冷冻室冷冻处理，冷冻温度-5-0℃，冷冻时间8-12h，然后从冷冻室取出，在3min内迅速采用粉碎机将结块的稻草粉、石棉粉粉碎，并混合均匀，晾置室温，再与碳酸锂混合，研磨，制得混合基材粉末；
在高速混合机中，先加入基材，升温至80-120℃，再投入活性剂和发泡剂，进行搅拌，搅拌时间15-30min；
将高分子聚合物、润滑剂、增塑剂加入，进行搅拌，搅拌时间15-30min，待混合均匀后，加入防粘剂，继续搅拌至均匀成混合料；将该混合料送入纸膜设备，在170-220℃条件下混合料成熔融态并由纸膜机模头充气制成纸膜，经圆轴碾压后，冷却得到离型纸。
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