CN104742480B - 一种防水透湿tpu面料的制备方法 - Google Patents

一种防水透湿tpu面料的制备方法 Download PDF

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CN104742480B
CN104742480B CN201510183972.3A CN201510183972A CN104742480B CN 104742480 B CN104742480 B CN 104742480B CN 201510183972 A CN201510183972 A CN 201510183972A CN 104742480 B CN104742480 B CN 104742480B
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徐咏春
陈小健
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Guangdong yuqilu Plastic Technology Co.,Ltd.
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    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
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    • B32B27/00Layered products comprising a layer of synthetic resin
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    • B32B37/153Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
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Abstract

本发明公开了一种防水透湿TPU面料的制备方法,其包括以下步骤:按重量份计,取TPU颗粒80~90份、改性纳米碳酸钙5~15份、EVA 5~10份均匀混合;将混合后的物料加入双螺杆挤出机中熔融挤出;用切粒机造粒;取基布用涂层机上胶;将上胶后的基布在流延机上在线流延贴合薄膜。本发明的防水透湿TPU面料具有透湿性能好、加工性能及力学性能好的优点。

Description

一种防水透湿TPU面料的制备方法
技术领域
本发明涉及面料的制备方法,具体涉及一种防水透湿TPU面料的制备方法,可广泛用服装材料、鞋材。
背景技术
近年来,防水透湿织物作为户外运动服饰所采用的高性能面料,得到蓬勃发展。最早的防水透湿织物是一种细号低捻度纯棉纱高密织物,经纬纱之间的微孔比较大,能提供高度透湿的结构,一旦润湿,棉纤维膨胀,迫使孔隙缩小,从而具有防水性。随后出现了聚氯乙烯、聚氨酯等涂层剂,其涂层厚度一般大于60g/m2,这种涂层织物防水性很好但不透气;使用聚丙烯酸酯、亲水性聚氨酯等亲水涂层剂,可以使织物具有较好的透湿性,但涂层剂吸水后,机械强度下降,防水性和牢度变差。1969年美国研制成了具有较好的防水性、优越的透湿和防风且耐湿、吸湿后不增重、易洗涤等多种优良性能的薄膜,这种材料是以聚四氟乙烯树脂为原料,经拉伸形成的微孔薄膜。随着PTFE薄膜的出现,利用PTFE薄膜与织物进行层压复合制得防水透湿压织物也被成功研制。由于PTFE薄膜是依靠微孔实现透湿功能的,多孔的结构容易使表面在洗涤或干活时受油污、汗液、洗涤剂和表面活性剂的沾污。继多微孔PTFE复合织物问世后,亲水型防水透湿织物也推出了市场。亲水型透水透湿织物是利用热塑性聚氨酯的特殊分子结构,由亲水性的基团将水分子逐一递出去,达到高透湿性的目的。这类聚氨酯薄膜大多采用聚醚型,具有耐水解性好、低温性能好和放霉菌性能好等特性。由于它不具有微孔结构,雨水风雪不能渗入,防水性能好。然而,TPU的耐热性能差,高湿下容易软化,强度不高,加工性能不理想。因此,如何提高TPU薄膜的耐热性及强度,提高加工性能,从而制备出高性价比的防水透湿TPU面料成为研究的热点。
发明内容
本发明的目的在于克服上述现有技术的缺陷,提供一种防水透湿TPU面料的制备方法,该方法先制作出耐热性好且强度、加工性能高的TPU薄膜,再层压出防水透湿性高的面料。
为实现上述目的,本发明采用如下技术方案:
一种防水透湿TPU面料的制备方法,其包括以下步骤:
(1)按重量份计,取TPU颗粒80~90份、改性纳米碳酸钙5~15份、EVA 5~10份均匀混合;
(2)将步骤(1)混合后的物料加入双螺杆挤出机中熔融挤出;
(3)用切粒机造粒;
(4)取基布用涂层机上胶;
(5)将上胶后的基布在流延机上在线流延贴合薄膜。
优选地,所述改性纳米碳酸钙为硼酸酯偶联剂改性纳米碳酸钙。
优选地,所述改性纳米碳酸钙是采用机械共混的方法在高速混合机中加入纳米碳酸钙和硼酸酯偶联剂,搅拌速度为1000~1500r/min,搅拌时间为5~10min,纳米碳酸钙与硼酸酯偶联剂的质量比为100:(1~2)。
优选地,步骤(5)采用的胶水为PU胶水。
优选地,步骤(2)双螺杆挤出的加料口温度为140~150℃,一区温度为160~170℃、二区温度为170~180℃、三区温度为190~195℃、四区温度为190~195℃,机头温度为185~190℃。
优选地,造粒后的物粒先在干燥箱中干燥。
优选地,干燥温度为85℃,干燥时间为2小时。
优选地,所述基布为涤纶布、无纺布、棉布、尼龙、网布。
与现有技术相比,本发明的有益效果是:
本发明的纳米碳采用硼酸酯偶联剂改性纳米碳酸钙后,纳米碳酸钙与TPU颗粒的相溶性好,再加上EVA材料的引入进一步提升了无机材料与有机材料的相溶性,形成稳定有机-无机相溶体系,高含量的纳米碳酸钙和EVA能够改善TPU颗粒在耐热性能上及强度、加工性能上的不足,大大提高了成薄的耐热性及加工性能,而且降低了薄膜的成本,成为高性价比的防水透湿面料的优质原料。
本发明的防水透湿TPU面料具有透湿性能好、加工性能及力学性能好的优点。
具体实施方式
下面通过具体实施例子对本发明做进一步详细介绍。
实施例1
一种防水透湿TPU面料的制备方法,其包括以下步骤:
(1)按重量份计,取TPU颗粒85份、改性纳米碳酸钙10份、EVA 5份均匀混合;
(2)将步骤(1)混合后的物料加入双螺杆挤出机中熔融挤出,双螺杆挤出的加料口温度为140~150℃,一区温度为160~170℃、二区温度为170~180℃、三区温度为190~195℃、四区温度为190~195℃,机头温度为185~190℃。
(3)用切粒机造粒;
(4)造粒后的物粒先在干燥箱中干燥,干燥温度为85℃,干燥时间为2小时;
(5)取基布用涂层机上胶,所述基布为涤纶布、无纺布、棉布、尼龙、网布中的一种,采用的胶水为PU胶水;
(6)将上胶后的基布在流延机上在线流延贴合薄膜。
实施例2
一种防水透湿TPU面料的制备方法,其包括以下步骤:
(1)按重量份计,取TPU颗粒90份、改性纳米碳酸钙15份、EVA 10份均匀混合;
(2)将步骤(1)混合后的物料加入双螺杆挤出机中熔融挤出,双螺杆挤出的加料口温度为140~150℃,一区温度为160~170℃、二区温度为170~180℃、三区温度为190~195℃、四区温度为190~195℃,机头温度为185~190℃。
(3)用切粒机造粒;
(4)造粒后的物粒先在干燥箱中干燥,干燥温度为85℃,干燥时间为2小时;
(5)取基布用涂层机上胶,所述基布为涤纶布、无纺布、棉布、尼龙、网布中的一种,采用的胶水为PU胶水;
(6)将上胶后的基布在流延机上在线流延贴合薄膜。
实施例3
一种防水透湿TPU面料的制备方法,其包括以下步骤:
(1)按重量份计,取TPU颗粒80份、改性纳米碳酸钙10份、EVA 5份均匀混合;
(2)将步骤(1)混合后的物料加入双螺杆挤出机中熔融挤出,双螺杆挤出的加料口温度为140~150℃,一区温度为160~170℃、二区温度为170~180℃、三区温度为190~195℃、四区温度为190~195℃,机头温度为185~190℃。
(3)用切粒机造粒;
(4)造粒后的物粒先在干燥箱中干燥,干燥温度为85℃,干燥时间为2小时;
(5)取基布用涂层机上胶,所述基布为涤纶布、无纺布、棉布、尼龙、网布中的一种,采用的胶水为PU胶水;
(6)将上胶后的基布在流延机上在线流延贴合薄膜。
实施例4薄膜性能测试
取实施例1至3流延机制成的薄膜,使用透湿性测试仪,按GB/T 1037-1988标准测量薄膜的透湿量,烘箱温度控制在38℃,每隔1小时取出称量,当达到稳定透湿后,连续称量三次,取平均值。实验结果:3个样品的透湿量均在5800g/m2/24h。
使用织物静水压实验仪,按GB/T 4744-1997标准测量薄膜的耐静水压值。实验结果:3样品的透湿量均在10000mmH2O以上。
使用万能材料试验机,按GB/T 528-1998标准测量薄膜力学性能,测试时温度为23℃,夹头间距64mm,上下夹头以500mm/min速率分离。实验结果:3个样品断裂伸长率达460%以上,拉伸强度达35Mpa,撕裂强度达到110KN/M。
根据上述说明书的揭示和教导,本发明所属领域的技术人员还可以对上述实施方式进行变更和修改。因此,本发明并不局限于上面揭示和描述的具体实施方式,对本发明的一些修改和变更也应当落入本发明的权利要求的保护范围内。此外,尽管本说明书中使用了一些特定的术语,但这些术语只是为了方便说明,并不对本发明构成任何限制。

Claims (6)

1.一种防水透湿TPU面料的制备方法,其特征在于包括以下步骤:
(1)按重量份计,TPU颗粒80~90份、改性纳米碳酸钙5~15份、EVA 5~10份均匀混合;所述改性纳米碳酸钙为硼酸酯偶联剂改性纳米碳酸钙;
(2)将步骤(1)混合后的物料加入双螺杆挤出机中熔融挤出;
(3)用切粒机造粒;
(4)取基布用涂层机上胶;
(5)将上胶后的基布在流延机上在线流延贴合薄膜;所述改性纳米碳酸钙是采用机械共混的方法在高速混合机中加入纳米碳酸钙和硼酸酯偶联剂,搅拌速度为1000~1500r/min,搅拌时间为5~10min,纳米碳酸钙与硼酸酯偶联剂的质量比为100:(1~2)。
2.如权利要求1所述的防水透湿TPU面料的制备方法,其特征在于:步骤(4)采用的胶水为PU胶水。
3.如权利要求1所述的防水透湿TPU面料的制备方法,其特征在于:步骤(2)双螺杆挤出的加料口温度为140~150℃,一区温度为160~170℃、二区温度为170~180℃、三区温度为190~195℃、四区温度为190~195℃,机头温度为185~190℃。
4.如权利要求1所述的防水透湿TPU面料的制备方法,其特征在于:造粒后的物粒先在干燥箱中干燥。
5.如权利要求4所述的防水透湿TPU面料的制备方法,其特征在于:干燥温度为85℃,干燥时间为2小时。
6.如权利要求1所述的防水透湿TPU面料的制备方法,其特征在于:所述基布为涤纶布、无纺布、棉布、尼龙或网布中的一种。
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CN109624422B (zh) * 2018-11-05 2021-04-20 安徽安利材料科技股份有限公司 一种tpu高低温膜复合网布及其制备方法
CN109397806B (zh) * 2018-11-12 2019-06-04 浙江鸿圣纺织科技有限公司 一种窗帘卷帘用复合布料及其制备方法
CN109762503B (zh) * 2018-12-13 2021-05-14 广东盈通新材料有限公司 用于热封胶带的tpu粘接层、包括该tpu粘接层的三层热封胶带及其制备方法和应用
CN111139657A (zh) * 2019-12-05 2020-05-12 苏州羽燕新材料科技有限公司 一种tpu微孔防水透湿织物及其制备方法
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