CN107974863A - 一种高强度瓦楞纸的制备方法 - Google Patents

一种高强度瓦楞纸的制备方法 Download PDF

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CN107974863A
CN107974863A CN201711136427.4A CN201711136427A CN107974863A CN 107974863 A CN107974863 A CN 107974863A CN 201711136427 A CN201711136427 A CN 201711136427A CN 107974863 A CN107974863 A CN 107974863A
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戴爱春
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Ningbo Endi Sanitary Ware Co Ltd
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Abstract

本发明公开了一种高强度瓦楞纸的制备方法，其在以重量计的100份原浆中加入10‑15份改性剂，其中所述改性剂按重量份包括35‑50份的聚丙烯酰胺，20‑25份石墨烯，10‑15份碳化硅，1‑5份硅藻土、1‑5份硼酸酯偶联剂；然后将抄纸浆通过造纸机进行抄造制得纸张，接着将所述纸张预热，采用施胶机将胶黏剂均匀涂抹在纸张表面，其中胶黏剂按重量份包括10‑15份醋酸乙烯酯、10‑15份三聚氰胺、5‑10份水性萜烯酚醛树脂乳液、70‑80份水。通过本发明所得到的瓦楞纸，通过在造纸原料中添加改性剂，大大增强了瓦楞纸的耐破指数和环压指数，使得本瓦楞纸具备较高的强度，提高了瓦楞纸箱的使用寿命。

Description

一种高强度瓦楞纸的制备方法
技术领域
本发明涉及造纸技术，特别是一种高强度瓦楞纸的制备方法。
背景技术
瓦楞纸板应用于运输包装领域，具有质量轻、成本低、易加工、便于储存和运输等优点，这是木材包装和金属包装所不具备的。瓦楞纸由面纸与芯纸两者裱褙而成，芯纸一般为波浪状，通过楞形等级的不同来划分其功能以及强度。作为一种优良的包装材料，瓦楞纸具有质轻、耐戳穿、防震、易加工成型等机械性能，以及良好的装潢印刷适应性，能够循环再利用，对环境无污染等优点，故受到现代社会的青睐，其使用范围越来越广，发展速度也越来越快。随着瓦楞纸的广泛应用，人们对瓦楞纸的要求也越来越高，如高强度。
发明内容
本发明的主要目的在于提供一种整体结构强度较高、更为环保的高强度瓦楞纸的制备方法。
为达到以上目的，本发明采用的技术方案为：一种高强度瓦楞纸的制备方法，包括以下步骤：
步骤一、选取造纸原料，加水进行泡浆，投入碎浆机中粉碎，使造纸原料离解为纤维，并进行过滤筛选去除粗纤维及杂质，打浆制得原浆；
步骤二、往以重量计的100份原浆中加入10-15份改性剂，充分搅拌，而后去除水分，得到含水率为10-20％的抄纸浆，其中所述改性剂按重量份包括35-50份的聚丙烯酰胺，20-25份石墨烯，10-15份碳化硅，1-5份硅藻土、1-5份硼酸酯偶联剂；
步骤三、将抄纸浆通过造纸机进行抄造制得纸张，接着将所述纸张预热，采用施胶机将胶黏剂均匀涂抹在纸张表面，其中胶黏剂按重量份包括10-15份醋酸乙烯酯、10-15份三聚氰胺、5-10份水性萜烯酚醛树脂乳液、70-80份水；
步骤四、将表面施过胶的后的瓦楞纸半成品放入烘缸内，调至温度到120℃～125℃，水份在2％～4％，放在室内静置24小时以后，再取出放在通风干燥处放置24小时，即可得到高强度瓦楞纸。
所述造纸原料按重量份包括木屑70-80份、农作物秸秆10-20份、蔗渣浆料5-15份以及玉米浆料5-10份。
所述改性剂的制备方法是先将35-50份的聚丙烯酰胺，20-25份石墨烯，10-15份碳化硅，1-5份硅藻土混合均匀，然后边搅拌边加热，加热温度是200-250℃，待冷却至100℃时放入1-5份硼酸酯偶联剂，保温30min即可。
所述胶黏剂的制备方法是将10-15份醋酸乙烯酯、10-15份三聚氰胺、5-10份水性萜烯酚醛树脂乳液、70-80份水，搅拌均匀后加热至50-60℃使各成分全部溶解，待温度自然降低至室温即可。
所述改性剂中的聚丙烯酰胺，大大增强了瓦楞纸的耐破指数和环压指数，使得本瓦楞纸具备较高的强度，提高了瓦楞纸箱的使用寿命。石墨烯和碳化硅可以提高瓦楞纸的物理强度，提高纸板整体的紧实感以及表面性质，提高纸张紧度及横向环压指数，同时增强其尺寸稳定性。硅藻土有细腻、松散、质轻、多孔、吸水性和渗透性强的性质，可以将碳化硅吸附在表面，从而达到更好的结合，硼酸酯偶联剂则用于将聚丙烯酰胺和石墨烯进行联结的作用。采用本发明的生产方法制得的瓦楞纸的各项性能和物质指标完全符合瓦楞纸的各项要求。
所述胶黏剂为水性粘合剂，其中醋酸乙烯酯和三聚氰胺则用于提高粘结强度，水性萜烯酚醛树脂乳液用于改善乳浊液中各种构成相之间的表面张力，使之形成均匀稳定的分散体系或乳浊液的物质。
所述造纸原料包括木屑、农作物秸秆、蔗渣浆料以及玉米浆料，有效的利用各行业所产生的废弃物，适应全社会倡导的节能环保以及循环经济精神，同时玉米浆料是有玉米秸秆通过高压蒸煮而得，自然环保。
本发明得到的一种高强度瓦楞纸的制备方法，其技术效果通过在造纸原料中添加改性剂，大大增强了瓦楞纸的耐破指数和环压指数，使得本瓦楞纸具备较高的强度，提高了瓦楞纸箱的使用寿命。经测试该高强度瓦楞纸的耐破强度为700-750Kpa。另外采用自主研发的胶黏剂，则使得瓦楞纸之间的粘结强度更强，进一步提高瓦楞纸的强度。
具体实施方式
以下描述用于揭露本发明以使本领域技术人员能够实现本发明。以下描述中的优选实施例只作为举例，本领域技术人员可以想到其他显而易见的变型。
实施例1：
本实施例提供的一种高强度瓦楞纸的制备方法，包括以下步骤：
步骤一、选取造纸原料，加水进行泡浆，投入碎浆机中粉碎，使造纸原料离解为纤维，并进行过滤筛选去除粗纤维及杂质，打浆制得原浆；
步骤二、往以重量计的100份原浆中加入10份改性剂，充分搅拌，而后去除水分，得到含水率为10-20％的抄纸浆，其中所述改性剂按重量份包括35份的聚丙烯酰胺，20份石墨烯，10份碳化硅，1份硅藻土、1份硼酸酯偶联剂；
步骤三、将抄纸浆通过造纸机进行抄造制得纸张，接着将所述纸张预热，采用施胶机将胶黏剂均匀涂抹在纸张表面，其中胶黏剂按重量份包括10份醋酸乙烯酯、10份三聚氰胺、5份水性萜烯酚醛树脂乳液、70份水；
步骤四、将表面施过胶的后的瓦楞纸半成品放入烘缸内，调至温度到120℃～125℃，水份在2％～4％，放在室内静置24小时以后，再取出放在通风干燥处放置24小时，即可得到高强度瓦楞纸。
所述造纸原料按重量份包括木屑70份、农作物秸秆10份、蔗渣浆料5份以及玉米浆料5份。
所述改性剂的制备方法是先将35份的聚丙烯酰胺，20份石墨烯，10-15份碳化硅，1份硅藻土混合均匀，然后边搅拌边加热，加热温度是200-250℃，待冷却至100℃时放入1份硼酸酯偶联剂，保温30min即可。
所述胶黏剂的制备方法是将10份醋酸乙烯酯、10份三聚氰胺、5份水性萜烯酚醛树脂乳液、70份水，搅拌均匀后加热至50-60℃使各成分全部溶解，待温度自然降低至室温即可。
本实施例制得的高强度瓦楞纸的耐破强度为730KPa。
实施例2：
本实施例提供的一种高强度瓦楞纸的制备方法大致与实施例1相同，其不同点在于所述改性剂按重量份包括50份的聚丙烯酰胺，25份石墨烯，15份碳化硅，5份硅藻土、5份硼酸酯偶联剂。
本实施例制得的高强度瓦楞纸的耐破强度为700KPa。
实施例3：
本实施例提供的一种高强度瓦楞纸的制备方法大致与实施例1相同，其不同点在于所述胶黏剂按重量份包括15份醋酸乙烯酯、15份三聚氰胺、10份水性萜烯酚醛树脂乳液、80份水。
本实施例制得的高强度瓦楞纸的耐破强度为750KPa。
以上显示和描述了本发明的基本原理、主要特征和本发明的优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是本发明的原理，在不脱离本发明精神和范围的前提下本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明的范围内。本发明要求的保护范围由所附的权利要求书及其等同物界定。

Claims (4)

1.一种高强度瓦楞纸的制备方法，其特征在于，包括以下步骤：
步骤一、选取造纸原料，加水进行泡浆，投入碎浆机中粉碎，使造纸原料离解为纤维，并进行过滤筛选去除粗纤维及杂质，打浆制得原浆；
步骤二、往以重量计的100份原浆中加入10-15份改性剂，充分搅拌，而后去除水分，得到含水率为10-20％的抄纸浆，其中所述改性剂按重量份包括35-50份的聚丙烯酰胺，20-25份石墨烯，10-15份碳化硅，1-5份硅藻土、1-5份硼酸酯偶联剂；
步骤三、将抄纸浆通过造纸机进行抄造制得纸张，接着将所述纸张预热，采用施胶机将胶黏剂均匀涂抹在纸张表面，其中胶黏剂按重量份包括10-15份醋酸乙烯酯、10-15份三聚氰胺、5-10份水性萜烯酚醛树脂乳液、70-80份水；
步骤四、将表面施过胶的后的瓦楞纸半成品放入烘缸内，调至温度到120℃～125℃，水份在2％～4％，放在室内静置24小时以后，再取出放在通风干燥处放置24小时，即可得到高强度瓦楞纸。
2.根据权利要求1所述的一种高强度瓦楞纸的制备方法，其特征在于：所述造纸原料按重量份包括木屑70-80份、农作物秸秆10-20份、蔗渣浆料5-15份以及玉米浆料5-10份。
3.根据权利要求1所述的一种高强度瓦楞纸的制备方法，其特征在于：所述改性剂的制备方法是先将35-50份的聚丙烯酰胺，20-25份石墨烯，10-15份碳化硅，1-5份硅藻土混合均匀，然后边搅拌边加热，加热温度是200-250℃，待冷却至100℃时放入1-5份硼酸酯偶联剂，保温30min即可。
4.根据权利要求1所述的一种高强度瓦楞纸的制备方法，其特征在于：所述胶黏剂的制备方法是将10-15份醋酸乙烯酯、10-15份三聚氰胺、5-10份水性萜烯酚醛树脂乳液、70-80份水，搅拌均匀后加热至50-60℃使各成分全部溶解，待温度自然降低至室温即可。
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