CN111497403A - 一种可降解防水阻燃的环保型包装纸板及其加工方法 - Google Patents
一种可降解防水阻燃的环保型包装纸板及其加工方法 Download PDFInfo
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Abstract
本发明提供了一种可降解防水阻燃的环保型包装纸板及其加工方法,属于包装纸板加工技术领域,该种可降解防水阻燃的环保型包装纸板从上至下依次包括防水层(1)、阻燃层(2)、瓦楞纸板层(3)及底层(4),所述防水层为可降解PE膜,所述阻燃层(2)为阻燃涂料层,所述底层(4)为加强硬纸板层。该种可降解防水阻燃的环保型包装纸板表面覆盖有可降解PE膜,可对包装纸板起到防水作用,而且该种PE膜可进行生物降解,不会污染环境,绿色环保;另外该种包装纸板涂有阻燃涂料,可起到阻燃作用,保护包装纸板内的包装物品;该种可降解防水阻燃的环保型包装纸板的加工方法简单,所需原料来源广泛,适宜工业大规模推广应用。
Description
技术领域
本发明属于包装纸板加工技术领域,具体地,涉及一种可降解防水阻燃的环保型包装纸板及其加工方法。
背景技术
由于瓦楞纸板不仅质轻,而且具有较好的机械强度,可承受一定的压力,富于弹性,缓冲作用好,主要用于制造纸箱、纸箱的夹心以及其它物品的包装材料。包装纸板可根据需要制成各种形状大小的衬垫或容器,比塑料缓冲材料要简便、快捷;受温度影响小,遮光性好,受光照不变质,一般受湿度影响也较小,但不宜在湿度较大的环境中长期使用,这会影响其强度。
包装纸板一般不能重复多次使用,包装纸板表面的塑料成分需要较长时间才能老化,会导致塑料污染,对人体及环境有着极大危害。包装纸板的主要成分是瓦楞纸板,瓦楞纸板容易燃烧,如在使用包装纸板时发生火灾,容易损坏物品,还会加大火灾的爆发。
发明内容
针对现有技术存在的不足,本发明提供一种可降解防水阻燃的环保型包装纸板及其加工方法,该种可降解防水阻燃的环保型包装纸板表面覆盖有可降解PE膜,可对包装纸板起到防水作用,而且该种PE膜可进行生物降解,不会污染环境,绿色环保;另外该种包装纸板涂有阻燃涂料,可起到阻燃作用,保护包装纸板内的包装物品;该种可降解防水阻燃的环保型包装纸板的加工方法简单,所需原料来源广泛,适宜工业大规模推广应用。
为了达到上述目的,本发明通过以下技术方案来实现:一种可降解防水阻燃的环保型包装纸板,所述包装纸板从上至下依次包括防水层、阻燃层、瓦楞纸板层及底层,所述防水层为可降解PE膜,所述阻燃层为阻燃涂料层,所述底层为加强硬纸板层。可降解PE膜可起到防水作用,而且可进行生物降解,不会污染环境;阻燃层起到阻燃作用,可保护包装物品;加强硬纸板层可加固包装纸板。
进一步地,所述可降解PE膜由如下质量配比的成分组成:PBAT 30-40份、壳聚糖20-40份及光敏剂30-40份。PBAT属于热塑性生物降解塑料,是己二酸丁二醇酯和对苯二甲酸丁二醇酯的共聚物,兼具PBA和PBT的特性,既有较好的延展性和断裂伸长率,也有较好的耐热性和冲击性能;此外,还具有优良的生物降解性。光敏剂属于一种光降解剂,可使PE膜通过光作用进行降解。
进一步地,所述光敏剂为二苯甲酮。
进一步地,所述阻燃涂料层由阻燃涂料组成,所述阻燃涂料由如下重量配比的成分组成:增稠剂10-15份、阻燃剂25-45份、乳胶10-15份、促进剂15-35份及去离子水30-45份。
进一步地,所述增稠剂由如下重量配比的成分组成:淀粉25-45份、海藻20-40份和琼脂15-35份。
进一步地,所述阻燃剂为五氧化二磷-石墨复合物,所述五氧化二磷-石墨复合物中五氧化二磷的重量占40-60%。
进一步地,所述乳胶为聚丁二烯或丁苯。
进一步地,所述促进剂由如下重量配比的成分组成:乙酰丙酮15-25份、三苯基膦35-50份及N,N-二甲基对甲基苯胺25-50份。
进一步地,所述加强硬纸板层为植物纤维层,所述植物纤维层厚度为5-8mm。植物纤维强度高,绿色环保,属于自然资源,来源广泛,价格便宜。
本发明还提供了一种可降解防水阻燃的环保型包装纸板的加工方法,包括如下加工步骤:
(1)制备可降解PE膜:取PBAT 30-40份、壳聚糖20-40份及光敏剂30-40份混合并于60-80℃条件下搅拌0.5-1小时,混合均匀后加入双杆螺杆挤出机中挤出成型即可制得可降解PE膜;
(2)制备阻燃涂料:取增稠剂10-15份、阻燃剂25-45份、乳胶10-15份加入反应釜中,再向反应釜内加入去离子水30-45份,使反应釜温度保持在40-60℃,在搅拌条件下分四次加入促进剂15-35份,每次加完间隔20分钟,搅拌2.5-4小时,即可制得阻燃涂料;
(3)将瓦楞纸板层与底层之间用聚氨酯胶黏剂粘合在一起,再在瓦楞纸板层上表面均匀涂上步骤(2)所得的阻燃涂料,然后将纸板置于35-45℃烘箱中烘烤4-6小时,取出自然冷却,再使用覆膜机将步骤(1)所得的可降解PE膜覆盖于阻燃涂料层表面,即可制得包装纸板。
有益效果:与现有技术相比,本发明具有以下优点:本发明提供的一种可降解防水阻燃的环保型包装纸板及其加工方法,该种可降解防水阻燃的环保型包装纸板表面覆盖有可降解PE膜,可对包装纸板起到防水作用,而且该种PE膜可进行生物降解,不会污染环境,绿色环保;另外该种包装纸板涂有阻燃涂料,可起到阻燃作用,保护包装纸板内的包装物品;底层为植物纤维层,植物纤维强度高,绿色环保,属于自然资源,来源广泛,价格便宜;该种可降解防水阻燃的环保型包装纸板的加工方法简单,所需原料来源广泛,适宜工业大规模推广应用。
附图说明
图1为本发明所述的一种可降解防水阻燃的环保型包装纸板结构图。
图中:1防水层、2阻燃层、3瓦楞纸板层、4底层。
具体实施方式
下面结合附图和具体实施例,进一步阐述本发明。
实施例1
如图1所示,一种可降解防水阻燃的环保型包装纸板,所述包装纸板从上至下依次包括防水层1、阻燃层2、瓦楞纸板层3及底层4,所述防水层为可降解PE膜,所述阻燃层2为阻燃涂料层,所述底层4为加强硬纸板层,所述加强硬纸板层为植物纤维层,所述植物纤维层厚度为5mm。
其中,所述可降解PE膜由如下质量配比的成分组成:PBAT 30份、壳聚糖20份及光敏剂30份,所述光敏剂为二苯甲酮。
此外,所述阻燃涂料层由阻燃涂料组成,所述阻燃涂料由如下重量配比的成分组成:增稠剂10份、阻燃剂25份、乳胶10份、促进剂15份及去离子水30份。所述增稠剂由如下重量配比的成分组成:淀粉25份、海藻20份和琼脂15份。所述阻燃剂为五氧化二磷-石墨复合物,所述五氧化二磷-石墨复合物中五氧化二磷的重量占40%。所述乳胶为聚丁二烯。所述促进剂由如下重量配比的成分组成:乙酰丙酮15份、三苯基膦35份及N,N-二甲基对甲基苯胺25份。
本实施例所述的一种可降解防水阻燃的环保型包装纸板的加工方法,包括如下加工步骤:
(1)制备可降解PE膜:取重量配比的PBAT、壳聚糖及光敏剂混合并于60℃条件下搅拌0.5小时,混合均匀后加入双杆螺杆挤出机中挤出成型即可制得可降解PE膜;
(2)制备阻燃涂料:取重量配比的增稠剂、阻燃剂、乳胶加入反应釜中,再向反应釜内加入重量配比的去离子水,使反应釜温度保持在40℃,在搅拌条件下分四次加入重量配比的促进剂,每次加完间隔20分钟,搅拌2.5小时,即可制得阻燃涂料;
(3)将瓦楞纸板层3与底层4之间用聚氨酯胶黏剂粘合在一起,再在瓦楞纸板层3上表面均匀涂上步骤(2)所得的阻燃涂料,然后将纸板置于35℃烘箱中烘烤4小时,取出自然冷却,再使用覆膜机将步骤(1)所得的可降解PE膜覆盖于阻燃涂料层表面,即可制得包装纸板。
实施例2
如图1所示,一种可降解防水阻燃的环保型包装纸板,所述包装纸板从上至下依次包括防水层1、阻燃层2、瓦楞纸板层3及底层4,所述防水层为可降解PE膜,所述阻燃层2为阻燃涂料层,所述底层4为加强硬纸板层,所述加强硬纸板层为植物纤维层,所述植物纤维层厚度为8mm。
其中,所述可降解PE膜由如下质量配比的成分组成:PBAT 40份、壳聚糖40份及光敏剂40份,所述光敏剂为二苯甲酮。
此外,所述阻燃涂料层由阻燃涂料组成,所述阻燃涂料由如下重量配比的成分组成:增稠剂15份、阻燃剂45份、乳胶15份、促进剂35份及去离子水45份。所述增稠剂由如下重量配比的成分组成:淀粉45份、海藻40份和琼脂35份。所述阻燃剂为五氧化二磷-石墨复合物,所述五氧化二磷-石墨复合物中五氧化二磷的重量占60%。所述乳胶为丁苯。所述促进剂由如下重量配比的成分组成:乙酰丙酮25份、三苯基膦50份及N,N-二甲基对甲基苯胺50份。
本实施例所述的一种可降解防水阻燃的环保型包装纸板的加工方法,包括如下加工步骤:
(1)制备可降解PE膜:取重量配比的PBAT、壳聚糖及光敏剂混合并于80℃条件下搅拌1小时,混合均匀后加入双杆螺杆挤出机中挤出成型即可制得可降解PE膜;
(2)制备阻燃涂料:取增稠剂15份、阻燃剂45份、乳胶15份加入反应釜中,再向反应釜内加入重量配比的去离子水,使反应釜温度保持在60℃,在搅拌条件下分四次加入重量配比的促进剂,每次加完间隔20分钟,搅拌4小时,即可制得阻燃涂料;
(3)将瓦楞纸板层3与底层4之间用聚氨酯胶黏剂粘合在一起,再在瓦楞纸板层3上表面均匀涂上步骤(2)所得的阻燃涂料,然后将纸板置于45℃烘箱中烘烤6小时,取出自然冷却,再使用覆膜机将步骤(1)所得的可降解PE膜覆盖于阻燃涂料层表面,即可制得包装纸板。
实施例3
如图1所示,一种可降解防水阻燃的环保型包装纸板,所述包装纸板从上至下依次包括防水层1、阻燃层2、瓦楞纸板层3及底层4,所述防水层为可降解PE膜,所述阻燃层2为阻燃涂料层,所述底层4为加强硬纸板层,所述加强硬纸板层为植物纤维层,所述植物纤维层厚度为6.5mm。
其中,所述可降解PE膜由如下质量配比的成分组成:PBAT 35份、壳聚糖30份及光敏剂35份,所述光敏剂为二苯甲酮。
此外,所述阻燃涂料层由阻燃涂料组成,所述阻燃涂料由如下重量配比的成分组成:增稠,13份、阻燃剂35份、乳胶13份、促进剂25份及去离子水37份。所述增稠剂由如下重量配比的成分组成:淀粉35份、海藻30份和琼脂25份。所述阻燃剂为五氧化二磷-石墨复合物,所述五氧化二磷-石墨复合物中五氧化二磷的重量占50%。所述乳胶为聚丁二烯。所述促进剂由如下重量配比的成分组成:乙酰丙酮20份、三苯基膦42份及N,N-二甲基对甲基苯胺37份。
本实施例所述的一种可降解防水阻燃的环保型包装纸板的加工方法,包括如下加工步骤:
(1)制备可降解PE膜:取重量配比的PBAT、壳聚糖及光敏剂混合并于70℃条件下搅拌0.8小时,混合均匀后加入双杆螺杆挤出机中挤出成型即可制得可降解PE膜;
(2)制备阻燃涂料:取重量配比的增稠剂、阻燃剂、乳胶加入反应釜中,再向反应釜内加入重量配比的去离子水,使反应釜温度保持在50℃,在搅拌条件下分四次加入重量配比的促进剂,每次加完间隔20分钟,搅拌3.3小时,即可制得阻燃涂料;
(3)将瓦楞纸板层3与底层4之间用聚氨酯胶黏剂粘合在一起,再在瓦楞纸板层3上表面均匀涂上步骤(2)所得的阻燃涂料,然后将纸板置于40℃烘箱中烘烤5小时,取出自然冷却,再使用覆膜机将步骤(1)所得的可降解PE膜覆盖于阻燃涂料层表面,即可制得包装纸板。
性能测试
为了验证本发明所述的该种可降解防水阻燃的环保型包装纸板的降解率及阻燃性能,取实施例1-3所加工的纸板进行降解测试,按照GB/T20197-2006进行试验;取实施例1-3所加工的纸板通过垂直燃烧法来评价其阻燃性能,实验结果如下表1所示。
表1性能测试结果
试验项目 | 生物降解率/% | 极限氧指数/% | 抗张强度/N/m<sup>2</sup> |
实施例1 | 89.5% | 45.5 | 78 |
实施例2 | 96.8% | 40.1 | 73 |
实施例3 | 93.3% | 43.5 | 76 |
由以上结果可知,该种包装纸板生物降解率高,绿色环保不污染环境;其阻燃性能好,在发生火灾时可保护物品;而且其抗张强度高,纸板比较牢固;采用该种加工方法得到的包装纸板各项性能好,适宜于工业大规模推广应用。
以上所述仅是本发明的几个实施方式,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,这些改进也应视为本发明的保护范围。
Claims (10)
1.一种可降解防水阻燃的环保型包装纸板,其特征在于:所述包装纸板从上至下依次包括防水层(1)、阻燃层(2)、瓦楞纸板层(3)及底层(4),所述防水层为可降解PE膜,所述阻燃层(2)为阻燃涂料层,所述底层(4)为加强硬纸板层。
2.根据权利要求1所述的一种可降解防水阻燃的环保型包装纸板,其特征在于:所述可降解PE膜由如下质量配比的成分组成:PBAT 30-40份、壳聚糖20-40份及光敏剂30-40份。
3.根据权利要求2所述的一种可降解防水阻燃的环保型包装纸板,其特征在于:所述光敏剂为二苯甲酮。
4.根据权利要求1所述的一种可降解防水阻燃的环保型包装纸板,其特征在于:所述阻燃涂料层由阻燃涂料组成,所述阻燃涂料由如下重量配比的成分组成:增稠剂10-15份、阻燃剂25-45份、乳胶10-15份、促进剂15-35份及去离子水30-45份。
5.根据权利要求4所述的一种可降解防水阻燃的环保型包装纸板,其特征在于:所述增稠剂由如下重量配比的成分组成:淀粉25-45份、海藻20-40份和琼脂15-35份。
6.根据权利要求4所述的一种可降解防水阻燃的环保型包装纸板,其特征在于:所述阻燃剂为五氧化二磷-石墨复合物,所述五氧化二磷-石墨复合物中五氧化二磷的重量占40-60 %。
7.根据权利要求4所述的一种可降解防水阻燃的环保型包装纸板,其特征在于:所述乳胶为聚丁二烯或丁苯。
8.根据权利要求4所述的一种可降解防水阻燃的环保型包装纸板,其特征在于:所述促进剂由如下重量配比的成分组成:乙酰丙酮15-25份、三苯基膦35-50份及N,N-二甲基对甲基苯胺25-50份。
9.根据权利要求1所述的一种可降解防水阻燃的环保型包装纸板,其特征在于:所述加强硬纸板层为植物纤维层,所述植物纤维层厚度为5-8 mm。
10.一种可降解防水阻燃的环保型包装纸板的加工方法,制备如权利要求4-8任一项所述的一种可降解防水阻燃的环保型包装纸板,其特征在于:包括如下加工步骤:
(1)制备可降解PE膜:取PBAT 30-40份、壳聚糖20-40份及光敏剂30-40份混合并于60-80 ℃条件下搅拌0.5-1 小时,混合均匀后加入双杆螺杆挤出机中挤出成型即可制得可降解PE膜;
(2)制备阻燃涂料:取增稠剂10-15份、阻燃剂25-45份、乳胶10-15份加入反应釜中,再向反应釜内加入去离子水30-45份,使反应釜温度保持在40-60 ℃,在搅拌条件下分四次加入促进剂15-35份,每次加完间隔20分钟,搅拌2.5-4 小时,即可制得阻燃涂料;
(3)将瓦楞纸板层(3)与底层(4)之间用聚氨酯胶黏剂粘合在一起,再在瓦楞纸板层(3)上表面均匀涂上步骤(2)所得的阻燃涂料,然后将纸板置于35-45 ℃烘箱中烘烤4-6小时,取出自然冷却,再使用覆膜机将步骤(1)所得的可降解PE膜覆盖于阻燃涂料层表面,即可制得包装纸板。
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