CN116537472A - 具有无规三维结构的防水透气无纺布墙纸及其制备方法 - Google Patents
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Abstract
本发明公开了一种具有无规三维结构的防水透气的无纺布墙纸及其制备方法,涉及墙纸加工技术领域,所述具有无规三维结构的防水透气的无纺布由SMS无纺布面层、基层和胶黏剂组成,所述SMS无纺布面层由皮芯复合纤维网作为S层,PP熔喷纤维网作为M层组成。本发明的具有无规三维结构的防水透气的无纺布的制备方法为:将PET和PP经纺粘得皮芯复合纤维,皮芯复合纤维网作为S层,PP喷熔纤维层网作为M层,得SMS无纺布,再将SMS无纺布与基层经胶黏剂组合,即得具有无规三维结构的防水透气的无纺布墙纸。本发明制得的无纺布墙纸具有良好的防水透气性能,且表面布面形成了不规则的凸起,具有一定的立体感。
Description
技术领域
本发明涉及墙纸加工技术领域,具体涉及一种具有无规三维结构的防水透气的无纺布墙纸及其制备方法。
背景技术
现有技术中,壁纸主要有塑料壁纸、纯纸壁纸和无纺布壁纸三种,其中,塑料墙纸虽然美观,粘贴方便,但塑料墙纸属于软质聚氯乙烯塑料制品,在其生产过程中会加入塑料增塑剂、稳定剂、抗老化剂等物质,在黏贴后,便会释放有胶的湿气和色素中的物质,这些助剂中的部分物质会对人体带来一定的危险;纯纸壁纸的原材料是原生木浆或回收物,经打浆成型制得的,此类壁纸因其原料为纸面材料,因此,不耐水、不耐擦洗,施工难度高,操作不易,容易有接缝;无纺布墙纸的柔韧性很强,易于施工,零甲醛,延展性好,收缩性小纹理美观、具有保型性好,强力高的优点。
但墙纸的使用环境多种多样,当在潮湿环境中时,纯纸壁纸容易受潮、强力降低,而塑料墙纸容易出现鼓包、脱落、墙体发霉的情况,因此亟需一种防水透气的材料既能解决墙体发霉、墙纸鼓包脱落,还能起到防水的功能,保护墙面免受外来水份的侵蚀。
发明内容
针对上述现有技术,本发明的目的是提供一种具有无规三维结构的防水透气无纺布墙纸及其制备方法,该无纺布墙纸具有较强的防水性、良好的透气性和高效隔离的性能,既能够有效的阻隔水份的渗透还能将墙体内部的水汽及时的散发出去,且布面形成了不规则的凸起,具有一定的立体感。
为实现上述目的,本发明采用如下技术方案:
本发明的第一方面,提供了一种具有无规三维结构的防水透气无纺布墙纸。所述具有无规三维结构的防水透气无纺布墙纸从上而下依次包括SMS无纺布面层、胶黏剂层和基层;
所述SMS无纺布面层中的S层由皮芯复合纤维制成,M层由PP纤维制成。
优选的,SMS无纺布面层的克重为70~180g/m2。
优选的,所述皮芯复合纤维的纤维细度为10~20μm,PP纤维的纤维细度为1~5μm。
优选的,所述皮芯复合纤维的皮层的原料为PP,皮芯复合纤维的芯层的原料为PET。
进一步优选的,所述皮芯复合纤维中,PP的重量占比为10~40%,余量为PET。
优选的,所述基层为玻璃纤维纸或无纺布。
优选的,所述胶黏剂层为水性丙烯酸、含氟丙烯酸、羟基硅油或乙烯酯中的一种或多种。
本发明的第二方面,提供了一种具有无规三维结构的防水透气无纺布墙纸的制备方法,包括以下步骤:
(1)将PET切片干燥后经螺杆熔融挤出,得芯层熔体,将PP切片与PP抗老化母粒混匀后经螺杆熔融挤出,得皮层熔体,将皮层熔体和芯层熔体经计量、纺丝、冷却、牵伸和铺网,得皮芯复合纤维网;
(2)将PP熔喷切片经螺杆熔融挤压、熔喷、热风牵伸和铺网,得PP熔喷纤维网;
(3)以步骤(1)制得的皮芯复合纤维网为上层和下层,以PP熔喷纤维网为中间层,经热定型、热收缩、卷绕,得到SMS无纺布面层;
(4)将步骤(3)制得的SMS无纺布面层与基层经胶黏剂复合,即得具有无规三维结构的防水透气无纺布墙纸。
优选的,步骤(1)中,PET切片的干燥温度为140~170℃,干燥后PET切片的螺杆熔融温度为270~300℃。
优选的,步骤(1)中,混合后的PP切片与PP抗老化母粒的螺杆熔融温度为160~240℃。
优选的,步骤(1)中,纺丝中模头温度为270~280℃。
优选的,步骤(1)中,牵伸压力为0.15~0.3MPa。
优选的,步骤(2)中,螺杆熔融温度为190~245℃。
优选的,步骤(2)中,熔喷中模头温度为230~260℃。
优选的,步骤(2)中,所述热风牵伸中,热风温度为200~240℃,热风压力为0.03~0.07MPa。
优选的,步骤(3)中,热定型温度为130~155℃。
优选的,步骤(3)中,热收缩的处理为:将热定型后的无纺布进行第一热风加热、常温风冷却降温,第二热风加热和常温风冷却降温。
进一步优选的,所述第一热风温度为150~160℃;第二热风温度为160~170℃。
本发明的有益效果:
1.本发明采用SMS无纺布作为无纺布墙纸的面层,SMS无纺布是由纺粘和熔喷两种工艺相结合而生产的,把纺粘无纺布的强力高、耐磨的性能和熔喷无纺布的高屏蔽、防水性能集中到一种材料上,形成一种具有较强的防水性、良好的透气性和高效隔离的性能的无纺布。
所述SMS无纺布作为墙纸的面层,既能够有效的阻隔水份的渗透还能将墙体内部的水汽及时的散发出去。具体的,SMS无纺布中的S层采用皮芯复合纤维,皮层原料为PP,芯层原料为PET,PET可增加无纺布面层的强度和硬挺度,使得无纺布墙纸具有良好的保型性,PP原料具有拒水性能,作为皮层使得无纺布墙纸面层具有防水性能,另外,PP/PET双组份纤维有利于S层和M层进行热粘合,保证SMS无纺布面层的稳定性。同时,PP作为M层,也起到了防水性能。
2.在无纺布墙纸制备过程中,SMS无纺布面层经两道热风进行热收缩后,其布面形成了不规则的凸起,具有一定的立体感,有别于市面在售的无纺布墙纸,纹理美观、新颖。
具体实施方式
应该指出,以下详细说明都是例示性的,旨在对本申请提供进一步的说明。除非另有指明,本文使用的所有技术和科学术语具有与本申请所属技术领域的普通技术人员通常理解的相同含义。
为了使得本领域技术人员能够更加清楚地了解本申请的技术方案,以下将结合具体的实施例详细说明本申请的技术方案。
本发明实施例中所用的试验材料均为本领域常规的试验材料,均可通过商业渠道购买得到。
实施例1:具有无规三维结构的防水透气无纺布墙纸的制备
(1)采用IV值0.65、熔点260℃的PET切片作为芯层原料,于160℃下干燥后,经螺杆挤压机于285℃的螺杆熔融温度下熔融挤压,得芯层熔体,采用熔指38g/10min、熔点168℃的PP切片作为皮层原料,将皮层原料与PP抗老化母粒混匀后,经螺杆挤压机于215℃的螺杆熔融温度下熔融挤压,得皮层熔体;
将芯层熔体和皮层熔体经计量、纺丝、侧冷风冷却、牵伸和铺网,得皮芯复合纤维网,其中,纺丝模头温度为270℃,牵伸压力为0.15MPa,所述皮芯复合纤维网的纤维细度为10μm,PP的重量占比为25%;
(2)将熔指1500g/10min、熔点168℃的熔喷PP切片经螺杆挤压机于214℃的螺杆熔融温度下熔融挤压,将熔融后的喷熔PP切片经管道至230℃的熔喷模头中进行喷丝,热风牵伸和铺网,得PP熔喷纤维网;
其中,热风牵伸中,热风温度为200℃,热风压力为0.03MPa,PP熔喷纤维网中的PP纤维的纤维细度为4μm;
(3)以步骤(1)制得的皮芯复合纤维网为上层和下层,以PP熔喷纤维网为中间层,经130℃下热定型、热收缩、卷绕,得到具有无规三维结构的SMS无纺布,所述具有无规三维结构的SMS无纺布的克重为70g/m2;
所述热收缩的处理为:将热定型后的无纺布于150℃下第一热风加热、常温风冷却降温,于160℃下第二热风加热和常温风冷却降温;
(4)将步骤(3)制得的具有无规三维结构的SMS无纺布与玻璃纤维纸用水性丙烯酸复合,即得具有无规三维结构的防水透气无纺布墙纸。
实施例2
(1)采用IV值0.65、熔点260℃的PET切片作为芯层原料,于170℃下干燥后,经螺杆挤压机于300℃的螺杆熔融温度下熔融挤压,得芯层熔体,采用熔指38g/10min、熔点168℃的PP切片作为皮层原料,将皮层原料与PP抗老化母粒混匀后,经螺杆挤压机于240℃的螺杆熔融温度下熔融挤压,得皮层熔体;
将芯层熔体和皮层熔体经计量、纺丝、侧冷风冷却、牵伸和铺网,得皮芯复合纤维网,其中,纺丝模头温度为280℃,牵伸压力为0.3MPa,所述皮芯复合纤维网的纤维细度为20μm,PP的重量占比为40%;
(2)将熔指1500g/10min、熔点168℃的熔喷PP切片经螺杆挤压机于190℃的螺杆熔融温度下熔融挤压,将熔融后的喷熔PP切片经管道至260℃的熔喷模头中进行喷丝,热风牵伸和铺网,得PP熔喷纤维网;
其中,热风牵伸中,热风温度为240℃,热风压力为0.07MPa,PP熔喷纤维网中的PP纤维的纤维细度为5μm;
(3)以步骤(1)制得的皮芯复合纤维网为上层和下层,以PP熔喷纤维网为中间层,经155℃下热定型、热收缩、卷绕,得到具有无规三维结构的SMS无纺布,所述具有无规三维结构的SMS无纺布的克重为180g/m2;所述热收缩的处理为:将热定型后的无纺布于160℃下第一热风加热、常温风冷却降温,于170℃下第二热风加热和常温风冷却降温;
(4)将步骤(3)制得的具有无规三维结构的SMS无纺布与玻璃纤维纸用水性丙烯酸复合,即得具有无规三维结构的防水透气无纺布墙纸。
实施例3
(1)采用IV值0.65、熔点260℃的PET切片作为芯层原料,于140℃下干燥后,经螺杆挤压机于270℃的螺杆熔融温度下熔融挤压,得芯层熔体,采用熔指38g/10min、熔点168℃的PP切片作为皮层原料,将皮层原料与PP抗老化母粒混匀后,经螺杆挤压机于160℃的螺杆熔融温度下熔融挤压,得皮层熔体;
将芯层熔体和皮层熔体经计量、纺丝、侧冷风冷却、牵伸和铺网,得皮芯复合纤维网,其中,纺丝模头温度为275℃,牵伸压力为0.2MPa,所述皮芯复合纤维网的纤维细度为15μm,PP的重量占比为25%;
(2)将熔指1500g/10min、熔点168℃的熔喷PP切片经螺杆挤压机于245℃的螺杆熔融温度下熔融挤压,将熔融后的喷熔PP切片经管道至245℃的熔喷模头中进行喷丝,热风牵伸和铺网,得PP熔喷纤维网;
其中,热风牵伸中,热风温度为250℃,热风压力为0.05MPa,PP熔喷纤维网中的PP纤维的纤维细度为1μm;
(3)以步骤(1)制得的皮芯复合纤维网为上层和下层,以PP熔喷纤维网为中间层,经143℃下热定型、热收缩、卷绕,得到具有无规三维结构的SMS无纺布,所述具有无规三维结构的SMS无纺布的克重为105g/m2;所述热收缩的处理为:将热定型后的无纺布于155℃下第一热风加热、常温风冷却降温,于165℃下第二热风加热和常温风冷却降温;
(4)将步骤(3)制得的具有无规三维结构的SMS无纺布与玻璃纤维纸用水性丙烯酸复合,即得具有无规三维结构的防水透气无纺布墙纸。
对比例1
(1)采用IV值0.65、熔点260℃的PET切片于170℃下干燥后,经螺杆挤压机于300℃的螺杆熔融温度下熔融挤压,经计量、纺丝、侧冷风冷却、牵伸和铺网,得PET纤维网,其中,纺丝模头温度为280℃,牵伸压力为0.3MPa;
(2)将熔指1500g/10min、熔点168℃的熔喷PP切片经螺杆挤压机于190℃的螺杆熔融温度下熔融挤压,将熔融后的喷熔PP切片经管道至260℃的熔喷模头中进行喷丝,热风牵伸和铺网,得PP熔喷纤维网;
其中,热风牵伸中,热风温度为240℃,热风压力为0.07MPa,PP熔喷纤维网中的PP纤维的纤维细度为5μm;
(3)将步骤(1)制得的PET纤维网为上层和下层,以PP熔喷纤维网为中间层,经155℃下热定型、热收缩、卷绕,得到SMS无纺布,所述SMS无纺布;
所述热收缩的处理为:将热定型后的无纺布于160℃下第一热风加热、常温风冷却降温,于170℃下第二热风加热和常温风冷却降温;
(4)将步骤(3)制得的SMS无纺布与玻璃纤维纸用水性丙烯酸复合,即得具有无规三维结构的防水透气无纺布墙纸。
对比例2
(1)采用熔指38g/10min、熔点168℃的PP切片和PP抗老化母粒混匀后,经螺杆挤压机于240℃的螺杆熔融温度下熔融挤压,经计量、纺丝、侧冷风冷却、牵伸和铺网,得PP纤维网,其中,纺丝模头温度为280℃,牵伸压力为0.3MPa,
(2)将熔指1500g/10min、熔点168℃的熔喷PP切片经螺杆挤压机于190℃的螺杆熔融温度下熔融挤压,将熔融后的喷熔PP切片经管道至260℃的熔喷模头中进行喷丝,热风牵伸和铺网,得PP熔喷纤维网;
其中,热风牵伸中,热风温度为240℃,热风压力为0.07MPa,PP熔喷纤维网中的PP纤维的纤维细度为5μm;
(3)以步骤(1)制得的PP纤维网为上层和下层,以PP熔喷纤维网为中间层,经155℃下热定型、热收缩、卷绕,得到SMS无纺布;
所述热收缩的处理为:将热定型后的无纺布于160℃下第一热风加热、常温风冷却降温,于170℃下第二热风加热和常温风冷却降温;
(4)将步骤(3)制得的SMS无纺布与玻璃纤维纸用水性丙烯酸复合,即得具有无规三维结构的防水透气无纺布墙纸
对比例3
(1)采用IV值0.65、熔点260℃的PET切片作为芯层原料,于170℃下干燥后,经螺杆挤压机于300℃的螺杆熔融温度下熔融挤压,得芯层熔体,采用熔指38g/10min、熔点168℃的PP切片作为皮层原料,将皮层原料与PP抗老化母粒混匀后,经螺杆挤压机于240℃的螺杆熔融温度下熔融挤压,得皮层熔体;
将芯层熔体和皮层熔体经计量、纺丝、侧冷风冷却、牵伸和铺网,得皮芯复合纤维网,其中,纺丝模头温度为280℃,牵伸压力为0.3MPa,所述皮芯复合纤维网的纤维细度为20μm,克重为30g,PP的重量占比为40%;
(2)皮芯复合纤维网经155℃下热定型、热收缩、卷绕,得到无纺布
(3)将步骤(2)制得的无纺布与玻璃纤维纸用水性丙烯酸复合,即得无纺布墙纸。
试验例1:防水测试
将实施例1~3的无纺布墙纸与对比例1~3中的无纺布墙纸进行性能测试,根据GB/T328.10标准进行防水性测试,根据GB/T 24218.1-2018标准进行透气量测试,结果如表1所示。
表1防水性测试结果
组别 | 防水性(mm) | 透气量(mm/s) |
实施例1 | 1690 | 146 |
实施例2 | 1830 | 223 |
实施例3 | 1760 | 195 |
对比例1 | 640 | 126 |
对比例2 | 1040 | 92 |
对比例3 | 15 | 110 |
由表1可知,实施例1~3制得的具有无规三维结构的防水透气无纺布墙纸的防水性最高可到1830mm,透气量可达223mm/s,远高于对比例1~3的无纺布墙纸的防水性和透气性,由此可见,采用PP切片作为皮层原料,PET作为芯层原料,制得的具有皮芯结构的PP/PET双组分复合纤维网,将具有皮芯结构的PP/PET双组分复合纤维网作为上层和底层与M层PP结合制得的SMS无纺布具有优异的防水性能。
试验例2:花纹凸起测试
将实施例1~3的无纺布墙纸与对比例1~3中的无纺布墙纸测量其花纹凸起高低进行花纹凸起测试,检测结果如表2所示。
表2花纹凸起测试结果
组别 | 凸起高度cm |
实施例1 | 0.6 |
实施例2 | 0.8 |
实施例3 | 1.5 |
对比例1 | 0 |
对比例2 | 0 |
对比例3 | 0.4 |
由表2可以看出,实施例1~3的凸起高度远高于对比例1~4的墙纸凸起高度,由此可见,本申请制得的具有无规三维结构的防水透气无纺布墙纸的凸起高度最高可达1.5cm,凸起明显,外形美观。
以上所述仅为本申请的优选实施例而已,并不用于限制本申请,对于本领域的技术人员来说,本申请可以有各种更改和变化。凡在本申请的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本申请的保护范围之内。
Claims (10)
1.一种具有无规三维结构的防水透气无纺布墙纸,其特征在于,所述具有无规三维结构的防水透气无纺布墙纸从上而下依次设有SMS无纺布面层、胶黏剂层和基层;
所述SMS无纺布面层中的S层由皮芯复合纤维制成,M层由PP纤维制成;
所述皮芯复合纤维的皮层的原料为PP,皮芯复合纤维的芯层的原料为PET。
2.如权利要求1所述的具有无规三维结构的防水透气无纺布墙纸,其特征在于,所述SMS无纺布面层的克重为70~180g/m2。
3.如权利要求1所述的具有无规三维结构的防水透气无纺布墙纸,其特征在于,皮芯复合纤维的纤维细度为10~20μm,PP纤维的纤维细度为1~5μm。
4.如权利要求1所述的具有无规三维结构的防水透气无纺布墙纸,其特征在于,所述皮芯复合纤维中,PP的重量占比为10~40%,余量为PET。
5.如权利要求1所述的具有无规三维结构的防水透气无纺布墙纸,其特征在于,所述基层为玻璃纤维纸或无纺布;
所述胶黏剂层为水性丙烯酸、含氟丙烯酸、羟基硅油或乙烯酯中的一种或多种。
6.权利要求1~5任一项所述的具有无规三维结构的防水透气无纺布墙纸的制备方法,其特征在于,包括以下步骤:
(1)将PET切片干燥后经螺杆熔融挤出,得芯层熔体,PP切片与PP抗老化母粒混匀后经螺杆熔融挤出,得皮层熔体,将皮层熔体和芯层熔体经计量、纺丝、冷却、牵伸和铺网,得皮芯复合纤维网;
(2)将PP熔喷切片经螺杆熔融挤压、熔喷、热风牵伸和铺网,得PP熔喷纤维网;
(3)以步骤(1)制得的皮芯复合纤维网为上层和下层,以步骤(2)制得的PP熔喷纤维网为中间层,经热定型、热收缩、卷绕,得到SMS无纺布面层;
(4)将步骤(3)制得的SMS无纺布面层与基层经胶黏剂复合,即得具有无规三维结构的防水透气无纺布墙纸。
7.如权利要求6所述的具有无规三维结构的防水透气无纺布墙纸的制备方法,其特征在于,步骤(1)中,PET切片的干燥温度为140~170℃,干燥后PET切片的螺杆熔融温度为270~300℃;
混合后的PP切片与PP抗老化母粒的螺杆熔融温度为160~240℃。
8.如权利要求6所述的具有无规三维结构的防水透气无纺布墙纸的制备方法,其特征在于,步骤(1)中,纺丝中模头温度为270~280℃,牵伸压力为0.15~0.3MPa。
9.如权利要求6所述的具有无规三维结构的防水透气无纺布墙纸的制备方法,其特征在于,步骤(2)中,螺杆熔融温度为190~245℃;
熔喷中模头温度为230~260℃;
热风温度为200~240℃,热风压力为0.03~0.07MPa。
10.如权利要求6所述的具有无规三维结构的防水透气无纺布墙纸的制备方法,其特征在于,步骤(3)中,热定型温度为130~155℃;
热收缩的处理为:将热定型后的无纺布进行第一热风加热、常温风冷却降温,第二热风加热和常温风冷却降温;
所述第一热风温度为150~160℃;第二热风温度为160~170℃。
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