CN107956046B - 一种阻水透气无纺布及其加工工艺 - Google Patents

一种阻水透气无纺布及其加工工艺 Download PDF

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CN107956046B
CN107956046B CN201711416602.5A CN201711416602A CN107956046B CN 107956046 B CN107956046 B CN 107956046B CN 201711416602 A CN201711416602 A CN 201711416602A CN 107956046 B CN107956046 B CN 107956046B
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姚启明
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Abstract

本发明公开了一种阻水透气无纺布,由以下重量份原料制备而成:聚丙烯50‑60份、聚酯纤维10‑15份、醋酸丁酸纤维素酯10‑15份、马林酸树脂8‑10份、改性聚乙烯醇8‑10份、饱和芥酸酰胺3‑5份、抗氧剂3‑5份、纳米Ti7Rh4Ir2B8团簇0.5‑1份;加工工艺如下:(1)熔融共混;(2)纺丝;(3)牵伸成网;(4)粘合;(5)低温烘干;(6)压延、切边、卷绕、包装。本发明采用聚丙烯为基料,伍以科学配比的配料,加工制得的无纺布能保证高强度以及韧性,具有较高的防水性能和透气性能;同时,本发明以改性聚乙烯醇作为粘合剂,该粘合剂透气、粘合性能高,能够增强无纺布的透气性和韧性。

Description

一种阻水透气无纺布及其加工工艺
技术领域
本发明属于无纺布加工技术领域,具体地,涉及一种阻水透气无纺布及其加工工艺。
背景技术
无纺布又称非织造布,与传统的织造布相比具有工艺流程短、生产速率快,产量高、成本低、用途广等优势。随着技术的不断发展,无纺布的种类以及用途也越来越多样化。如多采用聚丙烯(pp材质)粒料为原料,经高温熔融、喷丝、铺纲、热压卷取连续一步法生产而成。因具有布的外观和某些性能而称其为布。
现有无纺布在使用过程中,大都存在结构强度低,称重量小等缺点,作为承重袋使用受到很大的限制。而且无纺布本身不阻水,易吸湿或不防水,对其内盛放的物品起不到阻水防护的作用。现有部分无纺布袋,通过在外表面涂覆防水胶来实现防水的功能,但同时也牺牲了无纺布本身所具有的透气性特点。
发明内容
针对上述背景技术中现有技术的不足,本发明提供了一种阻水透气无纺布及其加工工艺。
本发明的目的可以通过以下技术方案实现:
一种阻水透气无纺布,由以下重量份原料制备而成:聚丙烯50-60份、聚酯纤维10-15份、醋酸丁酸纤维素酯10-15份、马林酸树脂8-10份、改性聚乙烯醇8-10份、饱和芥酸酰胺3-5份、抗氧剂3-5份、纳米Ti7Rh4Ir2B8团簇0.5-1份;
所述阻水透气无纺布由如下步骤加工而成:
(1)熔融共混:聚丙烯、聚酯纤维、醋酸丁酸纤维素酯、马林酸树脂、饱和芥酸酰胺、抗氧剂、纳米Ti7Rh4Ir2B8团簇按照配方进行配比送入螺杆挤压机中,原料通过螺杆挤压机的螺杆进行输送和混合,同时加热升温至150-165℃,使得物料之间充分混合、熔融并形成熔体;
(2)纺丝:熔体进入纺丝箱体,设置纺丝箱体的温度为190-210℃,纺丝箱体对熔体进行分配,使熔体均匀地沿无纺布的幅宽分布,随后熔体经喷丝板挤出成丝;
(3)牵伸成网:利用风机产生的高速冷空气流实现对熔体细流的牵伸,使熔体细流成为高度取向的纤维,并受到下抽风的吸力,铺在网帘上,在下抽风负压作用下,纺丝系统的牵伸气流被抽走,而纤维网则留在成网机的网帘上形成单层的无纺布纤维网;
(4)粘合:将改性聚乙烯醇加入喷涂装置料筒,通过喷涂工艺将粘合剂均匀的喷到两层无纺布纤维网之间,上下振动无纺布纤维网,使粘合剂快速均匀的渗透到无纺布纤维网中;
(5)低温烘干:将振动处理后的无纺布纤维网进入烘箱进行烘干,烘箱温度40-50℃,无纺布纤维网通过烘箱速度为15-20m/min;
(6)加工:将制得的无纺布压延、切边、卷绕、包装。
所述改性聚乙烯醇的制备方法为:将纤维素纳米晶、羧甲基纤维素、聚乙烯醇加入反应釜中,于120℃搅拌反应0.8-1h,冷却至80-85℃,加入新癸酸缩水甘油脂,继续搅拌反应0.4-0.6h,加入氨乙基哌嗪和三乙醇胺,充分混合均匀,制得改性聚乙烯醇。
所述抗氧剂为二烷基二硫代氨基甲酸钼、亚磷酸三丁酯或二烷基二苯胺。
一种阻水透气无纺布的加工工艺,包括如下步骤:
(1)熔融共混:聚丙烯、聚酯纤维、醋酸丁酸纤维素酯、马林酸树脂、饱和芥酸酰胺、抗氧剂、纳米Ti7Rh4Ir2B8团簇按照配方进行配比送入螺杆挤压机中,原料通过螺杆挤压机的螺杆进行输送和混合,同时加热升温至150-165℃,使得物料之间充分混合、熔融并形成熔体;
(2)纺丝:熔体进入纺丝箱体,设置纺丝箱体的温度为190-210℃,纺丝箱体对熔体进行分配,使熔体均匀地沿无纺布的幅宽分布,随后熔体经喷丝板挤出成丝;
(3)牵伸成网:利用风机产生的高速冷空气流实现对熔体细流的牵伸,使熔体细流成为高度取向的纤维,并受到下抽风的吸力,铺在网帘上,在下抽风负压作用下,纺丝系统的牵伸气流被抽走,而纤维网则留在成网机的网帘上形成单层的无纺布纤维网;
(4)粘合:将改性聚乙烯醇加入喷涂装置料筒,通过喷涂工艺将粘合剂均匀的喷到两层无纺布纤维网之间,上下振动无纺布纤维网,使粘合剂快速均匀的渗透到无纺布纤维网中;
(5)低温烘干:将振动处理后的无纺布纤维网进入烘箱进行烘干,烘箱温度40-50℃,无纺布纤维网通过烘箱速度为15-20m/min;
(6)加工:将制得的无纺布压延、切边、卷绕、包装。
所述步骤(1)螺杆挤压机一到六区的温度为:一区165℃、二区175℃、三区185℃、四区195℃、五区205℃、六区215℃。
本发明的有益效果:
本发明采用聚丙烯为基料,伍以科学配比的配料,加工制得的无纺布在保证强度以及韧性要求的基础上,具有较高的防水性能和透气性能;同时,本发明以改性聚乙烯醇作为无纺布的粘合剂,该粘合剂透气、粘合性能高,能够增强无纺布的透气性和韧性;本发明的加工工艺简单,对生产设备的要求不高,适宜大规模生产。
具体实施方式
下面将结合实施例对本发明的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例,都属于本发明保护的范围。
一种阻水透气无纺布,由以下重量份原料制备而成:聚丙烯50-60份、聚酯纤维10-15份、醋酸丁酸纤维素酯10-15份、马林酸树脂8-10份、改性聚乙烯醇8-10份、饱和芥酸酰胺3-5份、抗氧剂3-5份、纳米Ti7Rh4Ir2B8团簇0.5-1份;
醋酸丁酸纤维素酯耐紫外光、耐寒、柔韧,能够增强无纺布的柔韧性和抗老化性;
改性聚乙烯醇的制备方法为:将纤维素纳米晶、羧甲基纤维素、聚乙烯醇加入反应釜中,于120℃搅拌反应0.8-1h,冷却至80-85℃,加入新癸酸缩水甘油脂,继续搅拌反应0.4-0.6h,加入氨乙基哌嗪和三乙醇胺,充分混合均匀,制得改性聚乙烯醇;其中,纤维素纳米晶、羧甲基纤维素、聚乙烯醇、新癸酸缩水甘油脂、氨乙基哌嗪、三乙醇胺的质量之比为1:0.8-1.2:6-9:0.1-0.3:0.05-0.1:0.05-0.1;
改性聚乙烯醇的粘合性能显著提升,可以较好的满足较大温度区间的性能要求;
抗氧剂为二烷基二硫代氨基甲酸钼、亚磷酸三丁酯或二烷基二苯胺;
所述阻水透气无纺布的加工工艺,包括如下步骤:
(1)熔融共混:聚丙烯、聚酯纤维、醋酸丁酸纤维素酯、马林酸树脂、饱和芥酸酰胺、抗氧剂按照配方进行配比送入螺杆挤压机中,原料通过螺杆挤压机的螺杆进行输送和混合,同时加热升温至150-165℃,使得物料之间充分混合、熔融并形成熔体;
螺杆挤压机一到六区的温度为:一区165℃、二区175℃、三区185℃、四区195℃、五区205℃、六区215℃;
(2)纺丝:熔体进入纺丝箱体,设置纺丝箱体的温度为190-210℃,纺丝箱体对熔体进行分配,使熔体均匀地沿无纺布的幅宽分布,随后熔体经喷丝板挤出成丝;
(3)牵伸成网:利用风机产生的高速冷空气流实现对熔体细流的牵伸,使熔体细流成为高度取向的纤维,并受到下抽风的吸力,铺在网帘上,在下抽风负压作用下,纺丝系统的牵伸气流被抽走,而纤维网则留在成网机的网帘上形成单层的无纺布纤维网;
(4)粘合:将改性聚乙烯醇加入喷涂装置料筒,通过喷涂工艺将粘合剂均匀的喷到两层无纺布纤维网之间,上下振动无纺布纤维网,使粘合剂快速均匀的渗透到无纺布纤维网中;
(5)低温烘干:将振动处理后的无纺布纤维网进入烘箱进行烘干,烘箱温度40-50℃,无纺布纤维网通过烘箱速度为15-20m/min;
(6)加工:将制得的无纺布压延、切边、卷绕、包装。
以上公开的本发明优选实施例只是用于帮助阐述本发明。优选实施例并没有详尽叙述所有的细节,也不限制该发明仅为所述的具体实施方式。显然,根据本说明书的内容,可作很多的修改和变化。本说明书选取并具体描述这些实施例,是为了更好地解释本发明的原理和实际应用,从而使所属技术领域技术人员能很好地理解和利用本发明。本发明仅受权利要求书及其全部范围和等效物的限制。

Claims (4)

1.一种阻水透气无纺布,其特征在于,由以下重量份原料制备而成:聚丙烯50-60份、聚酯纤维10-15份、醋酸丁酸纤维素酯10-15份、马林酸树脂8-10份、改性聚乙烯醇8-10份、饱和芥酸酰胺3-5份、抗氧剂3-5份、纳米Ti7Rh4Ir2B8团簇0.5-1份;
所述改性聚乙烯醇的制备方法为:将纤维素纳米晶、羧甲基纤维素、聚乙烯醇加入反应釜中,于120℃搅拌反应0.8-1h,冷却至80-85℃,加入新癸酸缩水甘油脂,继续搅拌反应0.4-0.6h,加入氨乙基哌嗪和三乙醇胺,充分混合均匀,制得改性聚乙烯醇,其中,纤维素纳米晶、羧甲基纤维素、聚乙烯醇、新癸酸缩水甘油脂、氨乙基哌嗪、三乙醇胺的质量之比为1:0.8-1.2:6-9:0.1-0.3:0.05-0.1:0.05-0.1;
所述阻水透气无纺布由如下步骤加工而成:
(1)熔融共混:聚丙烯、聚酯纤维、醋酸丁酸纤维素酯、马林酸树脂、饱和芥酸酰胺、抗氧剂、纳米Ti7Rh4Ir2B8团簇按照配方进行配比送入螺杆挤压机中,原料通过螺杆挤压机的螺杆进行输送和混合,同时加热升温至150-165℃,使得物料之间充分混合、熔融并形成熔体;
(2)纺丝:熔体进入纺丝箱体,设置纺丝箱体的温度为190-210℃,纺丝箱体对熔体进行分配,使熔体均匀地沿无纺布的幅宽分布,随后熔体经喷丝板挤出成丝;
(3)牵伸成网:利用风机产生的高速冷空气流实现对熔体细流的牵伸,使熔体细流成为高度取向的纤维,并受到下抽风的吸力,铺在网帘上,在下抽风负压作用下,纺丝系统的牵伸气流被抽走,而纤维网则留在成网机的网帘上形成单层的无纺布纤维网;
(4)粘合:将改性聚乙烯醇加入喷涂装置料筒,通过喷涂工艺将粘合剂均匀的喷到两层无纺布纤维网之间,上下振动无纺布纤维网,使粘合剂快速均匀的渗透到无纺布纤维网中;
(5)低温烘干:将振动处理后的无纺布纤维网进入烘箱进行烘干,烘箱温度40-50℃,无纺布纤维网通过烘箱速度为15-20m/min;
(6)加工:将制得的无纺布压延、切边、卷绕、包装。
2.根据权利要求1所述的一种阻水透气无纺布,其特征在于,所述抗氧剂为二烷基二硫代氨基甲酸钼、亚磷酸三丁酯或二烷基二苯胺。
3.根据权利要求1所述的一种阻水透气无纺布的加工工艺,其特征在于,包括如下步骤:
(1)熔融共混:聚丙烯、聚酯纤维、醋酸丁酸纤维素酯、马林酸树脂、饱和芥酸酰胺、抗氧剂、纳米Ti7Rh4Ir2B8团簇按照配方进行配比送入螺杆挤压机中,原料通过螺杆挤压机的螺杆进行输送和混合,同时加热升温至150-165℃,使得物料之间充分混合、熔融并形成熔体;
(2)纺丝:熔体进入纺丝箱体,设置纺丝箱体的温度为190-210℃,纺丝箱体对熔体进行分配,使熔体均匀地沿无纺布的幅宽分布,随后熔体经喷丝板挤出成丝;
(3)牵伸成网:利用风机产生的高速冷空气流实现对熔体细流的牵伸,使熔体细流成为高度取向的纤维,并受到下抽风的吸力,铺在网帘上,在下抽风负压作用下,纺丝系统的牵伸气流被抽走,而纤维网则留在成网机的网帘上形成单层的无纺布纤维网;
(4)粘合:将改性聚乙烯醇加入喷涂装置料筒,通过喷涂工艺将粘合剂均匀的喷到两层无纺布纤维网之间,上下振动无纺布纤维网,使粘合剂快速均匀的渗透到无纺布纤维网中;
(5)低温烘干:将振动处理后的无纺布纤维网进入烘箱进行烘干,烘箱温度40-50℃,无纺布纤维网通过烘箱速度为15-20m/min;
(6)加工:将制得的无纺布压延、切边、卷绕、包装。
4.根据权利要求3所述的一种阻水透气无纺布的加工工艺,其特征在于,所述步骤(1)螺杆挤压机一到六区的温度为:一区165℃、二区175℃、三区185℃、四区195℃、五区205℃、六区215℃。
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