CN114193869B - 一种功能性墙布及其制备方法 - Google Patents
一种功能性墙布及其制备方法 Download PDFInfo
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Abstract
本发明公开了一种功能性墙布及其制备方法,包括制备聚丙烯酰胺改性HDPE树脂、制备改性HDPE树脂、制备改性HDPE树脂薄膜以及制备功能性墙布4个步骤,HDPE树脂具有良好的耐磨性、电绝缘性、韧性及耐寒性,但其耐老化和力学性能差,聚丙烯酰胺具有强度高的特点,将其接枝在HDPE树脂上,可以较好改善HDPE树脂的力学强度,端乙烯基聚二甲基硅氧烷具有良好的耐候、耐老化和抗紫外线性能,将其接枝在HDPE树脂上,能够明显提高HDPE树脂的耐候和耐老化性能,并且与聚丙烯酰胺协同作用,共同提高HDPE树脂的力学强度。
Description
技术领域
本发明涉及墙布技术领域,具体涉及一种功能性墙布及其制备方法。
背景技术
墙布是一种可以糊裱于室内墙面的纤维类材料,可以起到装饰墙面、保护墙体等作用。而且墙布材料由于具有强力高、施工时不易破裂,可以进行大幅宽生产、使用无接缝和视觉舒适、触感柔和、少许隔音、高度透气、亲和性佳等优点,因此近年来越来越受到消费者的青睐。
墙布表面为纺织材料,墙布表面具备简单的吸湿、透气、抗菌功能,然而随着人们生活水平和生活质量的提高,这些已经不能够满足人们高生活品质所需,亟待对墙布的性能进行改进。
发明内容
针对现有技术的不足,本发明的目的在于提供一种功能性墙布及其制备方法,解决现有的墙布力学性能以及耐老化性能不佳的技术问题。
为了实现上述目的,本发明采取如下技术方案:
一种功能性墙布,包括底层面料、中间层和表层面料,所述中间层为改性HDPE树脂薄膜,所述改性HDPE树脂薄膜的制备方法,包括如下步骤:
(1)将HDPE树脂均匀分散在去离子水中,加入丙烯酰胺单体,超声分散均匀,然后向溶液中通入氮气除去混合液中的氧气,密封后送入钴60辐照室辐射,辐照完毕后,将反应产物进行过滤,洗涤,干燥,即得到聚丙烯酰胺改性HDPE树脂;
(2)聚丙烯酰胺改性HDPE树脂经辐照源辐照后,与端乙烯基聚二甲基硅氧烷和乙烯基辅助接枝单体熔融挤出,得到改性HDPE树脂;
(3)将改性HDPE树脂、纳米二氧化钛、纳米碳酸钙混合均匀后,挤压流延成膜,即得到改性HDPE树脂薄膜。
优选的,步骤(1)中,所述HDPE树脂、去离子水和丙烯酰胺单体的质量比为1-5:60-100:2-6。
优选的,步骤(1)中,辐照剂量为10-30kGy;辐照剂量率为0.2-2kGy/h。
优选的,步骤(2)中,聚丙烯酰胺改性HDPE树脂、端乙烯基聚二甲基硅氧烷和乙烯基辅助接枝单体的质量比为80-100:20-40:3-8。
优选的,步骤(2)中,所述乙烯基辅助接枝单体为苯乙烯。
优选的,步骤(2)中,熔融挤出温度为180-230℃。
优选的,步骤(3)中,所述改性HDPE树脂、纳米二氧化钛和纳米碳酸钙的质量比为60-100:5-10:3-6。
本发明还提供上述功能性墙布的制备方法,包括如下步骤:将表层面料、改性HDPE树脂薄膜和底层面料按顺序依次层叠放置后,通过复合机中的引布带送入到热压辊中,得到复合布料,再将复合布料通过引布带送入冷却辊中进行冷却,即得到功能性墙布。
优选的,热压辊的温度为130-150℃,压力为5-8kPa。
优选的,冷却辊的冷却温度为20-25℃。
优选的,所述表层面料材质为涤纶、锦纶、腈纶中的一种或多种。
优选的,所述底层面料材质为涤纶、锦纶、腈纶中的一种或多种。
与现有技术相比,本发明具有如下有益效果:
(1)在高能射线的作用下,HDPE树脂和丙烯酰胺单体可以产生大量的自由基,发生聚合反应和交联反应,进而得到聚丙烯酰胺改性HDPE树脂;然后以聚丙烯酰胺改性HDPE树脂为基体,端乙烯基聚二甲基硅氧烷为接枝体,先将基体进行辐照处理,并在乙烯基辅助接枝单体的配合下,将端乙烯基聚二甲基硅氧烷接枝在HDPE树脂上,得到改性HDPE树脂。
(2)HDPE树脂具有良好的耐磨性、电绝缘性、韧性及耐寒性,但其耐老化和力学性能差,聚丙烯酰胺具有强度高的特点,将其接枝在HDPE树脂上,可以较好改善HDPE树脂的力学强度,端乙烯基聚二甲基硅氧烷具有良好的耐候、耐老化和抗紫外线性能,将其接枝在HDPE树脂上,能够明显提高HDPE树脂的耐候和耐老化性能,并且与聚丙烯酰胺协同作用,共同提高HDPE树脂的力学强度。
具体实施方式
以下通过具体较佳实施例对本发明作进一步详细说明,但本发明并不仅限于以下的实施例。
需要说明的是,无特殊说明外,本发明中涉及到的化学试剂均通过商业渠道购买。
本实施例中所采用的HDPE树脂购自东莞市嘉嘉塑料原料有限公司,型号:5000S;
所采用的纳米二氧化钛的粒径为30-60nm;所采用的纳米碳酸钙的粒径为20-50nm。
实施例1
一种功能性墙布的制备方法,包括如下步骤:
(1)制备聚丙烯酰胺改性HDPE树脂:将10gHDPE树脂均匀分散在1000g去离子水中,加入12g丙烯酰胺单体,超声分散均匀,然后向溶液中通入氮气除去混合液中的氧气,密封后送入钴60辐照室辐射,其中辐照剂量为10kGy,辐照剂量率为0.2kGy/h,辐照完毕后,将反应产物进行过滤,洗涤,干燥,即得到聚丙烯酰胺改性HDPE树脂;
(2)制备改性HDPE树脂:将10g聚丙烯酰胺改性HDPE树脂送入钴60辐照室辐射,其中辐照剂量为30kGy,辐照剂量率为0.5kGy/h,然后与4g端乙烯基聚二甲基硅氧烷和0.5g乙烯基辅助接枝单体熔融挤出,得到改性HDPE树脂;
(3)制备改性HDPE树脂薄膜:将80g改性HDPE树脂、5g纳米二氧化钛、4g纳米碳酸钙混合均匀后,挤压流延成膜,即得到改性HDPE树脂薄膜;
(4)制备功能性墙布:将材质为涤纶的表层面料、改性HDPE树脂薄膜和材质为涤纶的底层面料按顺序依次层叠放置后,通过复合机中的引布带送入到热压辊中,热压辊的温度为135℃,压力为6kPa,得到复合布料,再将复合布料通过引布带送入冷却辊中进行冷却,冷却温度为25℃,即得到功能性墙布。
实施例2
一种功能性墙布的制备方法,包括如下步骤:
(1)制备聚丙烯酰胺改性HDPE树脂:将15gHDPE树脂均匀分散在1000g去离子水中,加入20g丙烯酰胺单体,超声分散均匀,然后向溶液中通入氮气除去混合液中的氧气,密封后送入钴60辐照室辐射,其中辐照剂量为30kGy,辐照剂量率为0.5kGy/h,辐照完毕后,将反应产物进行过滤,洗涤,干燥,即得到聚丙烯酰胺改性HDPE树脂;
(2)制备改性HDPE树脂:将20g聚丙烯酰胺改性HDPE树脂送入钴60辐照室辐射,其中辐照剂量为30kGy,辐照剂量率为0.5kGy/h,然后与8g端乙烯基聚二甲基硅氧烷和2g乙烯基辅助接枝单体熔融挤出,得到改性HDPE树脂;
(3)制备改性HDPE树脂薄膜:将80g改性HDPE树脂、8g纳米二氧化钛、5g纳米碳酸钙混合均匀后,挤压流延成膜,即得到改性HDPE树脂薄膜;
(4)制备功能性墙布:将材质为涤纶的表层面料、改性HDPE树脂薄膜和材质为涤纶的底层面料按顺序依次层叠放置后,通过复合机中的引布带送入到热压辊中,热压辊的温度为130℃,压力为6kPa,得到复合布料,再将复合布料通过引布带送入冷却辊中进行冷却,冷却温度为25℃,即得到功能性墙布。
实施例3
一种功能性墙布的制备方法,包括如下步骤:
(1)制备聚丙烯酰胺改性HDPE树脂:将15gHDPE树脂均匀分散在1000g去离子水中,加入25g丙烯酰胺单体,超声分散均匀,然后向溶液中通入氮气除去混合液中的氧气,密封后送入钴60辐照室辐射,其中辐照剂量为30kGy,辐照剂量率为0.6kGy/h,辐照完毕后,将反应产物进行过滤,洗涤,干燥,即得到聚丙烯酰胺改性HDPE树脂;
(2)制备改性HDPE树脂:将20g聚丙烯酰胺改性HDPE树脂送入钴60辐照室辐射,其中辐照剂量为30kGy,辐照剂量率为0.5kGy/h,然后与5g端乙烯基聚二甲基硅氧烷和2g乙烯基辅助接枝单体熔融挤出,得到改性HDPE树脂;
(3)制备改性HDPE树脂薄膜:将90g改性HDPE树脂、8g纳米二氧化钛、6g纳米碳酸钙混合均匀后,挤压流延成膜,即得到改性HDPE树脂薄膜;
(4)制备功能性墙布:将材质为涤纶的表层面料、改性HDPE树脂薄膜和材质为涤纶的底层面料按顺序依次层叠放置后,通过复合机中的引布带送入到热压辊中,热压辊的温度为135℃,压力为6kPa,得到复合布料,再将复合布料通过引布带送入冷却辊中进行冷却,冷却温度为20℃,即得到功能性墙布。
实施例4
一种功能性墙布的制备方法,包括如下步骤:
(1)制备聚丙烯酰胺改性HDPE树脂:将15gHDPE树脂均匀分散在1000g去离子水中,加入30g丙烯酰胺单体,超声分散均匀,然后向溶液中通入氮气除去混合液中的氧气,密封后送入钴60辐照室辐射,其中辐照剂量为30kGy,辐照剂量率为0.6kGy/h,辐照完毕后,将反应产物进行过滤,洗涤,干燥,即得到聚丙烯酰胺改性HDPE树脂;
(2)制备改性HDPE树脂:将20g聚丙烯酰胺改性HDPE树脂送入钴60辐照室辐射,其中辐照剂量为30kGy,辐照剂量率为0.5kGy/h,然后与6g端乙烯基聚二甲基硅氧烷和2g乙烯基辅助接枝单体熔融挤出,得到改性HDPE树脂;
(3)制备改性HDPE树脂薄膜:将100g改性HDPE树脂、10g纳米二氧化钛、5g纳米碳酸钙混合均匀后,挤压流延成膜,即得到改性HDPE树脂薄膜;
(4)制备功能性墙布:将材质为涤纶的表层面料、改性HDPE树脂薄膜和材质为涤纶的底层面料按顺序依次层叠放置后,通过复合机中的引布带送入到热压辊中,热压辊的温度为135℃,压力为6kPa,得到复合布料,再将复合布料通过引布带送入冷却辊中进行冷却,冷却温度为25℃,即得到功能性墙布。
对比例1
一种功能性墙布的制备方法,包括如下步骤:
(1)制备HDPE树脂薄膜:将80g HDPE树脂、8g纳米二氧化钛、5g纳米碳酸钙混合均匀后,挤压流延成膜,即得到HDPE树脂薄膜;
(2)制备功能性墙布:将材质为涤纶的表层面料、HDPE树脂薄膜和材质为涤纶的底层面料按顺序依次层叠放置后,通过复合机中的引布带送入到热压辊中,热压辊的温度为130℃,压力为6kPa,得到复合布料,再将复合布料通过引布带送入冷却辊中进行冷却,冷却温度为25℃,即得到功能性墙布。
将实施例1-4和对比例1所制备的墙布进行性能测试,具体测试方法如下:
防水性能测试:参照GB/T 4744-2013静水压法进行测试;
拉伸强度:参照GB/T1040.1-2018标准进行测试;
屈服强度:参照GB/T1040.1-2018标准进行测试;
冲击强度:参照GB/T1043.2-2018标准进行测试;
耐老化性能:在紫外光下老化2000h,测试拉伸强度保持率;
测试结果如下表所示:
从表中可以看出,本实施例所制备的墙布具有良好的防水性能,其拉伸强度、屈服强度和冲击强度均有明显提高,在紫外光下老化后,仍能保持良好的拉伸强度,耐老化性能大幅提高。
最后需要说明的是:以上实施例不以任何形式限制本发明。对本领域技术人员来说,在本发明基础上,可以对其作一些修改和改进。因此,凡在不偏离本发明精神的基础上所做的任何修改或改进,均属于本发明要求保护的范围之内。
Claims (4)
1.一种功能性墙布,包括底层面料、中间层和表层面料,其特征在于,所述中间层为改性HDPE树脂薄膜,所述改性HDPE树脂薄膜的制备方法,包括如下步骤:
(1)将HDPE树脂均匀分散在去离子水中,加入丙烯酰胺单体,超声分散均匀,然后向溶液中通入氮气除去混合液中的氧气,密封后送入钴60辐照室辐射,辐照完毕后,将反应产物进行过滤,洗涤,干燥,即得到聚丙烯酰胺改性HDPE树脂;
(2)聚丙烯酰胺改性HDPE树脂经辐照源辐照后,与端乙烯基聚二甲基硅氧烷和乙烯基辅助接枝单体熔融挤出,得到改性HDPE树脂;
(3)将改性HDPE树脂、纳米二氧化钛、纳米碳酸钙混合均匀后,挤压流延成膜,即得到改性HDPE树脂薄膜;
步骤(1)中,所述HDPE树脂、去离子水和丙烯酰胺单体的质量比为1-5:60-100:2-6;
步骤(2)中,聚丙烯酰胺改性HDPE树脂、端乙烯基聚二甲基硅氧烷和乙烯基辅助接枝单体的质量比为80-100:20-40:3-8,所述乙烯基辅助接枝单体为苯乙烯;
步骤(3)中,所述改性HDPE树脂、纳米二氧化钛和纳米碳酸钙的质量比为60-100:5-10:3-6;
步骤(1)中,辐照剂量为10-30kGy;辐照剂量率为0.2-2kGy/h;
步骤(2)中,熔融挤出温度为180-230℃。
2.一种如权利要求1所述功能性墙布的制备方法,其特征在于,包括如下步骤:将表层面料、改性HDPE树脂薄膜和底层面料按顺序依次层叠放置后,通过复合机中的引布带送入到热压辊中,得到复合布料,再将复合布料通过引布带送入冷却辊中进行冷却,即得到功能性墙布。
3.根据权利要求2所述功能性墙布的制备方法,其特征在于,热压辊的温度为130-150℃,压力为5-8kPa。
4.根据权利要求2所述功能性墙布的制备方法,其特征在于,冷却辊的冷却温度为20-25℃。
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