CN105755844B - 合成革用光固化贝斯的制备方法 - Google Patents

合成革用光固化贝斯的制备方法 Download PDF

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CN105755844B
CN105755844B CN201610263325.8A CN201610263325A CN105755844B CN 105755844 B CN105755844 B CN 105755844B CN 201610263325 A CN201610263325 A CN 201610263325A CN 105755844 B CN105755844 B CN 105755844B
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陈新
吴彦勋
赵莉莉
陈健
吴锦京
杨明华
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Abstract

本发明公开了合成革贝斯用光固化多孔膜的制备方法,其制备方法是在100份聚氨酯丙烯酸酯光固化树脂中加入1份的2‑羟基‑4‑(2‑羟乙氧基)‑2‑甲基苯丙酮和2‑羟基‑2‑甲基‑1‑苯基‑1‑丙酮的混合光引发剂、1.5份司盘80和吐温80的混合非离子乳化剂,在超声和高速搅拌条件下入加20‑60份饱和盐水溶液,形成稳定的油包水乳液,将其涂覆于预先整理的无纺布上,在紫外灯下进行固化成膜,然后在烘箱中烘干,发泡,得合成革用光固化多孔膜贝斯。

Description

合成革用光固化贝斯的制备方法
技术领域
本发明涉及一种合成革用光固化贝斯,属于皮革塑料制品领域。
技术背景
合成革是一种聚氨酯软制品,传统的湿法聚氨酯合成革的生产方法是将聚氨酯湿法树脂中加入DMF溶剂及其它填料、助剂制成混合液,经过真空机脱泡后,浸渍或涂覆于基布上,然后放入与溶剂(DMF)具有亲和性,而与聚氨酯树脂不亲和的水中,溶剂(DMF)被水置换,聚氨酯树脂逐渐凝固,从而形成多孔性皮膜,即微孔聚氨酯粒面层。这种方法中亲水溶剂大量溶于水中,因此在合成革生产中带来了严重的水污染。光固化技术是一种低能耗、环保涂层技术,通过对油包水涂层进行光固化成型,利用水的体积效应、热膨胀效应和发泡剂的发泡效应最终获得合成革用光固化多孔膜贝斯。
发明内容
本发明所要解决的技术问题是:提供一种制备方便且节能环保的合成革用光固化贝斯的制备方法。
本发明采用的技术方案是:一种合成革用光固化贝斯的制备方法,其特征在于依次包括以下步骤:(1)光固化油包水乳液的制备:
在装有高速电动剪切机、恒压漏斗、超声振动棒的分散釜中,加入聚氨酯丙烯酸酯光固化树脂100份,2-羟基-4-(2-羟乙氧基)-2-甲基苯丙酮和2-羟基-2-甲基-1-苯基-1-丙酮的混合光引发剂1份,司盘80和吐温80的混合非离子乳化剂1.5份,在室温25℃,剪切速率1300r/min,超声棒功率2000W的条件下,通过恒压漏斗分别滴加20-60份的饱和盐水溶液,1小时滴加完全,形成稳定的油包水的乳液;
(2)将上步制备的油包水乳液涂覆于预先处理的无纺布上,涂层厚度为10~50微米,在室温25℃条件下,采用紫外光源对油包水乳液进行固化处理20-100秒钟,然后将固化膜在三级烘箱中进行烘干,发泡,得合成革用光固化多孔膜贝斯。
2. 如权利要求1所述合成革用光固化多孔膜贝斯的制备方法,其特征在于制备光固化多孔膜的聚氨酯丙烯酸酯树脂的粘度为1000-2000mPa·S-1,聚氨酯丙烯酸酯树脂光固化后的100%拉伸强度为20-50MPa。
作为优选方案:所述混合光引发剂包括光引发剂2959和光引发剂1173,且它们的混合比例为1:1。
作为优选方案:司盘80和吐温80的混合非离子乳化剂的混合比例为1:0.5。
作为优选方案:饱和盐水溶液为饱和氯化钠水溶液或饱和碳酸氢钠水溶液。
作为优选方案:饱和盐水溶液加入量为20-60份。
作为优选方案:涂层的厚度为10~50微米。
与现有技术相比,本发明的优点是:
(1)本发明利用聚氨酯丙烯酸光固化树脂与盐水溶液的油包水乳液制备合成革多孔膜贝斯,在制备的过程主要挥发物为水和二氧化碳,与传统合成革贝斯的DMF湿法凝固相比,无DMF等溶剂排放。
(2)本发明利用聚氨酯丙烯酸光固化树脂与盐水溶液的油包水乳液制备合成革多孔膜贝斯,在油包水体系光固化后,在干燥过程,利用的水的体积效应,热膨胀和化合物的分解气体膨胀,形成多孔膜,具有独特的创造性,其形成的泡孔为闭孔型,泡孔均匀细密。
(3)本发明利用聚氨酯丙烯酸光固化树脂与盐水溶液的油包水乳液制备合成革多孔膜贝斯,由于存在紫外光固化定型,其泡孔主要为闭孔,且泡孔均匀细密,与传统的DMF湿法凝固贝斯相比,其耐高温压花,花纹的保型定型以及剥离强度性能更为优异。
具体实施方式
下面通过实施例对本发明进行具体描述。有必要在此指出的是本实施例只用于对本发明进行进一步说明,不能理解为对本发明保护范围的限制,该领域的技术熟练人员可以根据上述发明的内容作出一些非本质的改进和调整。
另外,还值得说明的是,以下各实施例除特殊说明外所用份数均为重量份。
实施例1:
(1)光固化油包水乳液的制备
在装有高速电动剪切机、恒压漏斗、超声振动棒的分散釜中,加入聚氨酯丙烯酸酯光固化树脂100份,巴斯夫IRGACURE 2959光引发剂0.5份和巴斯夫IRGACURE 1173光引发剂0.5份,非离子乳化剂(司盘-80)1份和非离子乳化剂(吐温-80)0.5份,在室温下(25℃),剪切速率为1300r/min,超声棒功率为2000W,通过恒压漏斗分别滴加20份的饱和氯化钠水溶液,1小时滴加完全,形成稳定的油包水的乳液。
(2)将上述制备的油包水乳液涂覆与预先处理的无纺布上,涂层厚度为10微米,在室温下(25℃),采用紫外光源对油包水乳液进行固化处理20秒钟,然后将固化膜在三级烘箱中130℃进行烘干,得合成革光固化多孔膜贝斯。
实施例2:
(1)光固化油包水乳液的制备
在装有高速电动剪切机、恒压漏斗、超声振动棒的分散釜中,加入聚氨酯丙烯酸酯光固化树脂100份,巴斯夫IRGACURE 2959光引发剂0.5份和巴斯夫IRGACURE 1173光引发剂0.5份,非离子乳化剂(司盘-80)1份和非离子乳化剂(吐温-80)0.5份,在室温下(25℃),剪切速率为1300r/min,超声棒功率为2000W,通过恒压漏斗分别滴加40份的饱和碳酸氢钠水溶液,1小时滴加完全,形成稳定的油包水的乳液。
(2)将上述制备的油包水乳液涂覆与预先处理的无纺布上,涂层厚度为20微米,在室温下(25℃),采用紫外光源对油包水乳液进行固化处理30秒钟,然后将固化膜在三级烘箱中130℃进行烘干,发泡,得合成革光固化多孔膜贝斯。
实施例3:
(1)光固化油包水乳液的制备
在装有高速电动剪切机、恒压漏斗、超声振动棒的分散釜中,加入聚氨酯丙烯酸酯光固化树脂100份,巴斯夫IRGACURE 2959光引发剂0.5份和巴斯夫IRGACURE 1173光引发剂0.5份,非离子乳化剂(司盘-80)1份和非离子乳化剂(吐温-80)0.5份,在室温下(25℃),剪切速率为1300r/min,超声棒功率为2000W,通过恒压漏斗分别滴40份的饱和碳酸氢钠水溶液,1小时滴加完全,形成稳定的油包水的乳液。
(2)将上述制备的油包水乳液涂覆与预先处理的无纺布上,涂层厚度为50微米,在室温下(25℃),采用紫外光源对油包水乳液进行固化处理30秒钟,然后将固化膜在三级烘箱中130℃进行烘干,发泡,得合成革光固化多孔膜贝斯。
实施例1、实施例2、实施例3所制备合成革光固化多孔膜贝斯:
通过上表可以看出,实施例2获得的合成革光固化多孔膜贝斯泡孔均匀、细密,耐高温压花及定型性能优异,剥离强度为28N/3cm,综合性能较优异。
(1)实施例1中添加的是20份饱和氯化钠水溶液,其水溶液的占位体积效应较小,且氯化钠在加热的过程中不会分解,不会产生膨胀性气体,故实施例中的光固化多孔膜贝斯的发泡倍率较低,造成其手感僵硬。
(2)实施例2中添加的是40份饱和碳酸氢钠水溶液,其水溶液的占位体积效应较实施例1中大,且碳酸氢钠在加热的过程中会分解,产生膨胀性气体,实施例2中的光固化多孔膜贝斯的发泡倍率为1.8,且制得的光固化多孔膜贝斯的泡孔均匀、细密,手感柔软,且耐高温压花和保型定型性能优异,剥离强度达到了28N/3cm,综合性能较好。
(3)实施例3中添加的是50份饱和氯化钠水溶液,涂层厚度为50微米,虽然实施例3中光固化多孔膜贝斯的发泡倍率发泡倍率最高,但是由于涂层厚度大,造成光固化过程中形成较多阴影区,光固化不完全,另外,分解性膨胀气体造成多孔膜的泡孔均匀度差,泡孔粗大,使得实施例3中多孔膜贝斯的耐高温压花和保型定型性能较差,剥离强度也仅为10N/3cm。

Claims (4)

1.合成革用光固化贝斯的制备方法,其特征在于依次包括以下步骤:
(1)光固化油包水乳液的制备
在装有高速电动剪切机、恒压漏斗、超声振动棒的分散釜中,加入聚氨酯丙烯酸酯光固化树脂100份,2-羟基-4-(2-羟乙氧基)-2-甲基苯丙酮和2-羟基-2-甲基-1-苯基-1-丙酮的混合光引发剂1份,司盘80和吐温80的混合非离子乳化剂1.5份,在室温25℃,剪切速率1300r/min,超声棒功率2000W的条件下,通过恒压漏斗分别滴加20-60份的饱和盐水溶液,1小时滴加完全,形成稳定的油包水的乳液;
(2)将上步制备的油包水乳液涂覆于预先处理的无纺布上,涂层厚度为10~50微米,在室温25℃条件下,采用紫外光源对油包水乳液进行固化处理20-100秒钟,然后将固化膜在三级烘箱中进行烘干,发泡,得合成革用光固化多孔膜贝斯。
2.如权利要求1所述合成革用光固化贝斯的制备方法,其特征在于制备光固化多孔膜的聚氨酯丙烯酸酯树脂的粘度为1000-2000mPa·s,聚氨酯丙烯酸酯树脂光固化后的100%拉伸强度为20-50MPa。
3.如权利要求1所述合成革用光固化贝斯的制备方法,其特征在于:司盘80和吐温80的混合非离子乳化剂的混合比例为1:0.5。
4.如权利要求1所述合成革用光固化贝斯的制备方法,其特征在于:饱和盐水溶液为饱和氯化钠水溶液或饱和碳酸氢钠水溶液。
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CN107401057A (zh) * 2017-07-31 2017-11-28 禾欣可乐丽超纤皮(嘉兴)有限公司 一种基于水性光固化聚氨酯的合成革生产方法
CN109914118B (zh) * 2019-02-19 2021-03-16 东莞市喜宝体育用品科技有限公司 一种三防飞织鞋面
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