CN105400444B - 高强度低温热熔胶的制备方法 - Google Patents

高强度低温热熔胶的制备方法 Download PDF

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CN105400444B
CN105400444B CN201510904390.XA CN201510904390A CN105400444B CN 105400444 B CN105400444 B CN 105400444B CN 201510904390 A CN201510904390 A CN 201510904390A CN 105400444 B CN105400444 B CN 105400444B
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傅陆军
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Abstract

本发明涉及一种高强度低温热熔胶的制备方法,所述制备方法按如下步骤进行:(1)将高强度水刺无纺布经过浸胶槽里乳液树脂浸渍后压轧,使其乳液树脂含量与高强度水刺无纺布质量比为1:3‑5,经过烘箱高压上下穿孔,175‑185℃高温高压烘干拉幅定型,冷却定型;(2)在成型片材正反面,通过螺杆挤出机将聚氨酯TPU经130‑150℃高温熔融混练均匀流延成片材分别与其正反面通过流延热压成型,同时在TPU流延胶片上分别复合一层高强度方格布,同时多层热压贴合定型,再经冷却定型;高强度低温热熔胶解决了现有技术的低温热熔胶在户外鞋、登山鞋、军靴等应用过程中产生的抗冲击力、抗压强度、防穿刺、耐低温不足的物性缺陷,具有较高的实用性价值。

Description

高强度低温热熔胶的制备方法
技术领域
本发明涉及一种高强度低温热熔胶的制备方法。
背景技术
低温热熔胶片弹性极高,刚性极佳,曲挠极强,前后包实定型后立体效果更加极优,无毒无味,不会产生污染,容易操作定型,做成成品鞋后不易变形,显示线条流畅,穿着舒适弹性极佳,形保持持久,无需刷胶水,粘结性好,操作极为便利,且可以重复利用,产品绿色环保.边角料可以回收再利用.是一种环保型材料,替代传统的材料.目前鞋材市场上低温热熔胶片,可以用于各类鞋子定型中底及汽车内饰、箱包、手袋、文具、玩具、皮具、家具等领域。
现有技术的缺点:现有传统的低温热熔胶片不适合用于劳保鞋,户外鞋,登山鞋,军靴等做主跟包头,其硬度、强度及抗冲击力,防穿刺等性能仍远远达不到制鞋标准要求,且其密度较高、材料较重,价格较贵、且在恶烈的低温环境下容易产生主跟包头断裂。
发明内容
本发明的目的在于解决现有技术的不足,提供一种高强度低温热熔胶的制备方法。
本发明解决其技术问题所采用的技术方案是:
高强度低温热熔胶的制备方法,所述制备方法按如下步骤进行:
(1)将高强度水刺无纺布经过浸胶槽里乳液树脂浸渍后压轧,使其乳液树脂含量与高强度水刺无纺布质量比为1:3-5,经过烘箱高压上下穿孔,175-185℃高温高压烘干拉幅定型,冷却定型;
(2)在成型片材正反面,通过螺杆挤出机将聚氨酯TPU经130-150℃高温熔融混练均匀流延成片材分别与其正反面通过流延热压成型,同时在TPU流延胶片上分别复合一层高强度方格布,同时多层热压贴合定型,再经冷却定型;
所述高强度水刺无纺布为聚酯大化纤,经高压水刺而制成厚度为0.8-1.5MM的高密度水刺无纺布;
所述乳液树脂为48%固含量苯丙乳液,玻璃化温度为80℃,pH值为7-8;
所述聚氨酯TPU为流延级热可塑性聚氨脂树脂,流动开始温度为60℃,熔融指数为10±5,硬度为97±2,固化速度为5min;
所述方格布为聚酯涤纶纱线经过经编机编织而成。
优选的,所述制备方法按如下步骤进行:
(1)将高强度水刺无纺布经过浸胶槽里乳液树脂浸渍后压轧,使其乳液树脂含量与高强度水刺无纺布质量比为1:3-5,经过烘箱高压上下穿孔,175-185℃高温高压烘干拉幅定型,冷却定型;
(2)在成型片材正反面,通过螺杆挤出机将聚氨酯TPU经130-150℃高温熔融混练均匀流延成片材分别与其正反面通过流延热压成型,同时在TPU流延胶片上分别复合一层高强度方格布,同时多层热压贴合定型,再经冷却定型。
优选的,所述乳液树脂每100重量份还添加有1-2重量份的有机膨润土,将有机膨润土加入乳液树脂中,常温充分搅拌均匀,形成稳定的分散体系备用。
本发明的有益效果是:
(1)本发明的高强度低温热熔采用高强度补强材料,结合新工艺生产,无毒无味,绿色环保,对环境不产生污染;
(2)高强度低温热熔比传统的低温胶密度大大降低,重量减轻,做出来的鞋子穿着更加轻便舒适;
(3)高强度低温热熔胶物性大大提升,且仍具有低温热熔胶优越的操作性;
(4)高强度低温热熔胶在恶烈的环境下(-15℃),其耐低温曲折性能极强,极端低温下不易断裂,定型效果极佳,形保持率持久;
(5)本发明的高强度低温热熔胶具有极高的抗冲击力,抗压强度,防穿刺性能,弹性极佳,刚性极强,形保持率提高1-2倍;
(6)高强度低温热熔胶解决了现有技术的低温热熔胶在户外鞋、登山鞋、军靴等应用过程中产生的抗冲击力、抗压强度、防穿刺、耐低温不足的物性缺陷,具有较高的实用性价值。
具体实施方式
下面通过具体实施例,对本发明的技术方案作进一步的具体说明。
实施例1:
高强度低温热熔胶的制备方法,所述制备方法按如下步骤进行:
(1)将高强度水刺无纺布经过浸胶槽里乳液树脂浸渍后压轧,使其乳液树脂含量与高强度水刺无纺布质量比为1:3,经过烘箱高压上下穿孔,175℃高温高压烘干拉幅定型,冷却定型;
(2)在成型片材正反面,通过螺杆挤出机将聚氨酯TPU经130℃高温熔融混练均匀流延成片材分别与其正反面通过流延热压成型,同时在TPU流延胶片上分别复合一层高强度方格布,同时多层热压贴合定型,再经冷却定型;
所述高强度水刺无纺布为聚酯大化纤,经高压水刺而制成厚度为0.8MM的高密度水刺无纺布;
所述乳液树脂为48%固含量苯丙乳液,玻璃化温度为80℃,pH值为7-8;
所述聚氨酯TPU为流延级热可塑性聚氨脂树脂,流动开始温度为60℃,熔融指数为10±5,硬度为97±2,固化速度为5min;
所述方格布为聚酯涤纶纱线经过经编机编织而成。
实施例2
高强度低温热熔胶的制备方法,所述制备方法按如下步骤进行:
(1)将高强度水刺无纺布经过浸胶槽里乳液树脂浸渍后压轧,使其乳液树脂含量与高强度水刺无纺布质量比为1:5,经过烘箱高压上下穿孔185℃高温高压烘干拉幅定型,冷却定型;
(2)在成型片材正反面,通过螺杆挤出机将聚氨酯TPU经150℃高温熔融混练均匀流延成片材分别与其正反面通过流延热压成型,同时在TPU流延胶片上分别复合一层高强度方格布,同时多层热压贴合定型,再经冷却定型;
所述高强度水刺无纺布为聚酯大化纤,经高压水刺而制成厚度为1.5MM的高密度水刺无纺布;
所述乳液树脂为48%固含量苯丙乳液,玻璃化温度为80℃,pH值为7-8,所述乳液树脂每100重量份还添加有1重量份的有机膨润土,将有机膨润土加入乳液树脂中,常温充分搅拌均匀,形成稳定的分散体系备用;
所述聚氨酯TPU为流延级热可塑性聚氨脂树脂,流动开始温度为60℃,熔融指数为10±5,硬度为97±2,固化速度为5min;
所述方格布为聚酯涤纶纱线经过经编机编织而成。
实施例3
高强度低温热熔胶的制备方法,所述纤维化纤维板的制备工艺如下:
(1)将负离子/硅藻泥复合材料30重量份,去离子水20重量份,充分搅拌均匀,然后再加入50重量份乳液树脂,混合搅拌30min,使其制成的浆料充分混合均匀,再将无纺布经浸胶槽净轧后经过180℃烘干拉幅定型,然后冷却定型获得透水气型半成品材料;
(2)将0.6MM的水刺无纺布经过防水乳液树脂处理后浸轧,乳液树脂质量含量与水刺无纺布质量之比为1:4,再经过烘箱高压上下穿孔,180℃高温烘干拉幅定型,然后冷却定型获得防水半成品材料;
(3)透水气型半成品材料与防水半成品材料通过聚氨酯热熔网膜经过高温高压把两种材料对贴成型,获得单向透水气型纤维化纤维板。
所述高强度水刺无纺布为聚酯大化纤,经高压水刺而制成厚度为1.5MM的高密度水刺无纺布;
所述乳液树脂为48%固含量苯丙乳液,玻璃化温度为80℃,pH值为7-8,所述乳液树脂每100重量份还添加有2重量份的有机膨润土,将有机膨润土加入乳液树脂中,常温充分搅拌均匀,形成稳定的分散体系备用;
所述聚氨酯TPU为流延级热可塑性聚氨脂树脂,流动开始温度为60℃,熔融指数为10±5,硬度为97±2,固化速度为5min;
所述方格布为聚酯涤纶纱线经过经编机编织而成。
实施例1-3制备得到的高强度低温热熔胶适合用于劳保鞋,户外鞋,登山鞋,军靴等做主跟包头,其硬度、强度及抗冲击力,防穿刺等性能优良,且在恶烈的低温环境下也不容易产生主跟包头断裂,尤其是实施例2和3的高强度低温热熔胶由于添加了有机膨润土,其硬度、强度及抗冲击力及防穿刺综合性能比现有技术提高10-15%,比实施例1的提高5-8%,具有极大的使用价值。
以上所述的实施例只是本发明的一种较佳的方案,并非对本发明作任何形式上的限制,在不超出权利要求所记载的技术方案的前提下还有其它的变体及改型。

Claims (2)

1.高强度低温热熔胶的制备方法,其特征在于:所述制备方法按如下步骤进行:
(1)将高强度水刺无纺布经过浸胶槽里乳液树脂浸渍后压轧,使其乳液树脂含量与高强度水刺无纺布质量比为1:3-5,经过烘箱高压上下穿孔,175-185℃高温高压烘干拉幅定型,冷却定型;
(2)在成型片材正反面,通过螺杆挤出机将聚氨酯TPU经130-150℃高温熔融混练均匀流延成片材分别与其正反面通过流延热压成型,同时在TPU流延胶片上分别复合一层高强度方格布,同时多层热压贴合定型,再经冷却定型;
所述高强度水刺无纺布为聚酯大化纤,经高压水刺而制成厚度为0.8-1.5mm的高密度水刺无纺布;
所述乳液树脂为48%固含量苯丙乳液,玻璃化温度为80℃,pH值为7-8;
所述聚氨酯TPU为流延级热可塑性聚氨酯 树脂,流动开始温度为60℃,熔融指数为10±5,硬度为97±2,固化速度为5min;
所述方格布为聚酯涤纶纱线经过经编机编织而成。
2.根据权利要求1所述的高强度低温热熔胶的制备方法,其特征在于:所述乳液树脂每100重量份还添加有1-2重量份的有机膨润土,将有机膨润土加入乳液树脂中,常温充分搅拌均匀,形成稳定的分散体系备用。
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