CN110644246B - 一种吸湿透气鞋里用聚氨酯合成革及其制备方法 - Google Patents

一种吸湿透气鞋里用聚氨酯合成革及其制备方法 Download PDF

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CN110644246B
CN110644246B CN201910872129.4A CN201910872129A CN110644246B CN 110644246 B CN110644246 B CN 110644246B CN 201910872129 A CN201910872129 A CN 201910872129A CN 110644246 B CN110644246 B CN 110644246B
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李道鹏
迟红梅
阮仁祥
胡健飞
陈泽
朱福俭
胡国金
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Anhui Anli Material Technology Co Ltd
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Abstract

本发明公开了一种吸湿透气鞋里用聚氨酯合成革及其制备方法，其由内至外依次由基布层、湿法聚氨酯层、透气吸湿层和防粘层构成，所述透气吸湿层由透气吸湿浆料制成，所述透气吸湿浆料由100份吸湿型聚氨酯树脂、20‑40份丁酮、0.5‑2份透气剂和15‑20份色浆按照重量份混合制成；所述吸湿型聚氨酯树脂由20‑30份TPU颗粒和60‑100份丁酮按照重量份混合制成。其采用溶解法取代取代挤塑流延法，操作简便，无需新增设备，将吸湿性的TPU颗粒经溶剂溶解后配制成浆料，进行干法涂覆，使得制得的聚氨酯合成革具有优良的透气吸湿性能、手感柔软，非常适用于高档鞋里革产品。

Description

一种吸湿透气鞋里用聚氨酯合成革及其制备方法
技术领域
本发明属于合成革技术领域，具体涉及一种吸湿透气鞋里用聚氨酯合成革及其制备方法。
背景技术
天然皮革具有优良的透湿透气性能是制鞋业最好的原材料之一，然而天然皮革产量低，且生产过程中重金属污染严重，无法大批量生产，无法满足人类日益增长需求。聚氨酯合成革是一种新型高分子材料，具有丰富多样的外观和类似真皮的手感，因此成为天然皮革最理想的替代品。
随着技术的发展，聚氨酯合成革在外观和耐用性上面已经接近甚至超过天然皮革，然而聚氨酯合成革本身材料的局限，合成革产品还存在透湿透气性较差的问题，制鞋后穿着有闷脚的现象；此外，鞋里革长期与脚汗接触更容易出现水解粉化，影响鞋子的耐用性。TPU也称热塑性聚氨酯弹性体，是一种新型聚氨酯材料，根据组成结构的不同具有多种特殊的性能，透湿型TPU材料已经在服装等产品上应用。但传统的TPU加工工艺为热挤压流延型，难以应用于传统合成革行业，例如，公开号为CN 105966027 A的中国专利公开了一种环保透气型TPU合成革及其制备方法，其制备方法中使用了挤塑流延机，传统合成革企业很少配有此类设备，因为这会无形中增加研发和设备投入，且纹路通过负压压纹工艺，该工艺稳定性差，成革幅宽低，不适合作为鞋里产品推广。
发明内容
有鉴于此，本发明有必要提供一种吸湿透气鞋里用聚氨酯合成革及其制备方法，采用溶解法取代取代挤塑流延法，操作简便，无需新增设备，将吸湿性的TPU颗粒经溶剂溶解后配制成浆料，进行干法涂覆，使得制得的聚氨酯合成革具有优良的透气吸湿性能、手感柔软，非常适用于高档鞋里革产品。
为了实现上述目的，本发明采用以下技术方案：
一种吸湿透气鞋里用聚氨酯合成革，由内至外依次由基布层、湿法聚氨酯层、透气吸湿层和防粘层构成，所述透气吸湿层由透气吸湿浆料制成，所述透气吸湿浆料由100份吸湿型聚氨酯树脂、20-40份丁酮、0.5-2份透气剂和15-20份色浆按照重量份混合制成；所述吸湿型聚氨酯树脂由20-30份TPU颗粒和60-100份丁酮按照重量份混合制成。
进一步的，所述吸湿型聚氨酯树脂的制备方法为：将20-30份TPU颗粒和60-100份丁酮于80-90℃搅拌3-6h制得。
进一步的，所述基布层为无纺布、机织布、超纤布或纬编高纺弹力布。
进一步的，所述防粘层由防粘浆料制成，所述防粘浆料由100份ST-2100、40-60份丁酮和0-10份色浆按照重量份混合制成。
本发明还提供了一种上述吸湿透气鞋里用聚氨酯合成革的制备方法，包括以下步骤：
S1、将湿法聚氨酯浆料涂覆于所述基布层上，然后依次经过凝聚、水洗、轧干、烘干、冷却、打卷得到湿法半成品贝斯；
S2、将防粘层浆料按照无间隙刮涂的方式涂覆于离型纸上，100-120℃烘干固化后制得防粘层；
S3、将透气吸湿浆料以0.15-0.20mm的间隙涂覆于所述防粘层上，80-100℃烘至半干后与所述湿法半成品贝斯贴合后，于120-140℃烘干后，冷却、剥离离型纸后得到半成品；
S4、将所述半成品揉纹得到吸湿透气鞋里用聚氨酯合成革。
进一步的，所述湿法聚氨酯浆料由100份PU树脂、20份木质素、10份碳酸钙、80份DMF、2份色浆、0.5份渗透剂和0.5份流平剂按照重量份制成。
进一步的，步骤S1中，所述湿法聚氨酯浆料以1.4mm的间隙涂覆于所述基布层上；
所述凝聚为将涂覆后的基布置于23％的DMF水溶液中凝聚；
所述烘干的温度为140℃。
进一步的，步骤S4中，所述揉纹的具体步骤为：将所述半成品置于连续揉纹机中干揉10-15min。
与现有技术相比，本发明具有以下有益效果：
本发明中的聚氨酯合成革由内至外依次由基布层、湿法聚氨酯层、透气吸湿层和防粘层。由于干法聚氨酯层为无孔的致密结构，且无法添加类似木质素的填料，因此，其不具有透气吸湿性能，导致整个合成革不具有透气吸湿的性能，而传统的TPU加工工艺为热挤压流延型，无法应用于合成革行业，因此，本发明将具有吸湿性的TPU颗粒经过溶剂溶解后配制成浆料，进行干法涂覆，使得制得的聚氨酯合成革具有优良的透气吸湿性能、手感柔软且非常适用于高档鞋里革产品。
具体实施方式
为了便于理解本发明，下面将结合具体的实施例对本发明进行更全面的描述。但是，本发明可以以许多不同的形式来实现，并不限于本文所描述的实施方式。相反地，提供这些实施方式的目的是使对本发明的公开内容理解的更加透彻全面。
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于限制本发明。
以下实施例中，采用的ST-2100为合肥安利聚氨酯有限公司生产的聚酯型聚氨酯树脂，该树脂具有触感滑爽，耐磨性优的特点；透气剂采用浙江华峰合成树脂有限公司的T01，TPU颗粒为美瑞新材料股份有限公司生产的
Figure BDA0002203159390000031
TPU。
实施例1
本实施例中聚氨酯合成革的制备步骤如下：
S1、制备湿法半成品贝斯：按照重量份取PU树脂(SW-6015，合肥安利聚氨酯有限公司)100份、木质素20份、碳酸钙10份、DMF 80份、色浆2份、渗透剂0.5份(S-11，上海日深化工有限公司)和流平剂0.5份(ACR，烟台福松化工有限公司)混合制成湿法浆料，将湿法聚氨酯浆料以1.4mm的间隙涂覆于水刺无纺布上(AL065，杭州路先非织造股份有限公司)，然后置于DMF质量分数为23％的水溶液中凝聚后，水洗、轧干，于140℃烘干，冷却、打卷得到湿法半成品贝斯；
S2、吸湿型聚氨酯树脂的制备：按照质量份称取25份美瑞新材料股份有限公司生产的
Figure BDA0002203159390000032
TPU和75份丁酮，在密闭反应釜中搅拌5小时，冷却后过滤制得吸湿型聚氨酯；
S3、制备防粘层：按照重量份称取100份ST-2100、60份丁酮MEK和3份红色浆混合制成防粘层浆料，将防粘层浆料以无间隙刮涂的方式涂覆于离型纸上，于100℃烘干固化后制得防粘层；
S4、制备透气吸湿层：按照重量份称取100份吸湿型聚氨酯树脂、40份丁酮、2份透气剂T01和15份色浆混合制成透气吸湿浆料，将透气吸湿浆料以0.15mm的间隙涂覆于防粘层上，80℃烘至半干后与步骤S1中的湿法半成品贝斯贴合后，于120℃烘干后，冷却剥离制得半成品；
S5、将半成品在连续揉纹机中干揉15分钟即得到吸湿透气聚氨酯合成革。
实施例2
S1、S2同实施例1；
S3、按照重量份称取100份ST-2100、50份丁酮MEK和3份红色浆混合制成防粘层浆料，将防粘层浆料以无间隙刮涂的方式涂覆于离型纸上，于110℃烘干固化后制得防粘层；
S4、按照重量份称取100份吸湿型聚氨酯树脂、30份丁酮、1份透气剂T01和15份色浆混合制成透气吸湿浆料，将透气吸湿浆料以0.18mm的间隙涂覆于防粘层上，90℃烘至半干后与步骤S1中的湿法半成品贝斯贴合后，于130℃烘干后，冷却剥离制得半成品；
S5、将半成品在连续揉纹机中干揉12分钟即得到吸湿透气聚氨酯合成革。
实施例3
S1、S2同实施例1；
S3、按照重量份称取100份ST-2100、40份丁酮MEK和3份红色浆混合制成防粘层浆料，将防粘层浆料以无间隙刮涂的方式涂覆于离型纸上，于120℃烘干固化后制得防粘层；
S4、按照重量份称取100份吸湿型聚氨酯树脂、20份丁酮、0.5份透气剂T01和15份色浆混合制成透气吸湿浆料，将透气吸湿浆料以0.20mm的间隙涂覆于防粘层上，100℃烘至半干后与步骤S1中的湿法半成品贝斯贴合后，于140℃烘干后，冷却剥离制得半成品；
S5、将半成品在连续揉纹机中干揉10分钟即得到吸湿透气聚氨酯合成革。
将实施例1-3中的吸湿透气聚氨酯合成革与我司常规市售水刺布鞋里革(RHDC60X-0.7)分别进行物理性质的对比，结果见表1：
表1
Figure BDA0002203159390000041
通过表1中的测试结果可以看出，采用本发明的聚氨酯合成革制成的鞋里革，与常规的水刺鞋里革相比，其软硬度、耐磨性和耐水解性相当，均比较优异，但本发明中制得的鞋里革透气量和透湿量明显优于常规的水刺鞋里革，说明本发明中的的聚氨酯合成革制成的鞋里革在保持优良的手感、耐磨性和耐水解性，其同时具有优异的吸湿透气性。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (7)

1.一种吸湿透气鞋里用聚氨酯合成革，其特征在于，由内至外依次由基布层、湿法聚氨酯层、透气吸湿层和防粘层构成，所述透气吸湿层由透气吸湿浆料制成，所述透气吸湿浆料由100份吸湿型聚氨酯树脂、20-40份丁酮、0.5-2份透气剂和15-20份色浆按照重量份混合制成；所述吸湿型聚氨酯树脂由20-30份TPU颗粒和60-100份丁酮按照重量份混合后于80-90℃搅拌3-6h制得，其中，所述TPU颗粒为Mirathane® TPU。
2.如权利要求1所述的吸湿透气鞋里用聚氨酯合成革，其特征在于，所述基布层为无纺布、机织布、超纤布或纬编高纺弹力布。
3.如权利要求1所述的吸湿透气鞋里用聚氨酯合成革，其特征在于，所述防粘层由防粘浆料制成，所述防粘浆料由100份ST-2100、40-60份丁酮和0-10份色浆按照重量份混合制成。
4.一种如权利要求1-3任一项所述的吸湿透气鞋里用聚氨酯合成革的制备方法，其特征在于，包括以下步骤：
S1、将湿法聚氨酯浆料涂覆于所述基布层上，然后依次经过凝聚、水洗、轧干、烘干、冷却、打卷得到湿法半成品贝斯；
S2、将防粘层浆料按照无间隙刮涂的方式涂覆于离型纸上，100-120℃烘干固化后制得防粘层；
S3、将透气吸湿浆料以0.15-0.20mm的间隙涂覆于所述防粘层上，80-100℃烘至半干后与所述湿法半成品贝斯贴合后，于120-140℃烘干后，冷却、剥离离型纸后得到半成品；
S4、将所述半成品揉纹得到吸湿透气鞋里用聚氨酯合成革。
5.如权利要求4所述的制备方法，其特征在于，所述湿法聚氨酯浆料由100份PU树脂、20份木质素、10份碳酸钙、80份DMF、2份色浆、0.5份渗透剂和0.5份流平剂按照重量份制成。
6.如权利要求4所述的制备方法，其特征在于，步骤S1中，所述湿法聚氨酯浆料以1.4mm的间隙涂覆于所述基布层上；
所述凝聚为将涂覆后的基布置于DMF质量分数为23%的水溶液中凝聚；
所述烘干的温度为140℃。
7.如权利要求4所述的制备方法，其特征在于，步骤S4中，所述揉纹的具体步骤为：将所述半成品置于连续揉纹机中干揉10-15min。
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