CN112695541A - 一种防水透湿水性聚氨酯环保涂层帐篷织物 - Google Patents
一种防水透湿水性聚氨酯环保涂层帐篷织物 Download PDFInfo
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Abstract
本发明涉及一种防水透湿水性聚氨酯环保涂层帐篷织物，基胚经过退浆染色定型之后，采用多次重复涂层的方式，其中涂层整理步骤如下：（1）聚醚多元醇PU第一次底涂；（2）聚醚多元醇PU第二次底涂；（3）聚醚多元醇PU面涂，选用固含量50%左右的亲水性聚氨酯树脂，100份亲水性聚氨酯树脂中添加3份密胺架桥机、2份密胺促进剂和6份耐磨滑爽剂，涂层厚度控制在30‑35μm，每平米用胶量控制在100‑105g/㎡。在涂层整理过程中，选用亲水性聚醚多元醇聚氨酯作为底胶和面胶，其上的亲水基团可作为桥梁，使水分子依靠氢键或者其他作用力沿着亲水基团按“吸附‑扩散‑解吸附”的顺序从高湿度侧传递到低湿度侧，具有优异的透湿透气性。
Description
技术领域
本发明涉及一种帐篷织物，尤其涉及一种防水透湿水性聚氨酯环保涂层帐篷织物。
背景技术
随着现代社会城镇化程度的提高以及人们对健康的注重；户外运动逐渐成为了多数人周末以及节假日首先选择的运动方式，帐篷也成为户外运动装备中的主流。
帐篷，是撑在地上遮蔽风雨﹑日光并供临时居住的棚子。多用帆布做成，连同支撑用的东西，可随时拆下转移。因此帐篷的质量由帐篷织物和支撑用的骨架来体现。
帐篷织物的防水透湿研究在国外非常流行，国内虽然已有企业开展相关研究，但使用较多的是PVC涂层，虽然防水性好，但透湿性较差且不耐低温。
发明内容
本发明提供一种防水透湿水性聚氨酯环保涂层帐篷织物，选用亲水性聚醚多元醇聚氨酯作为底胶和面胶，其上的亲水基团可作为桥梁，使水分子依靠氢键或者其他作用力沿着亲水基团按“吸附-扩散-解吸附”的顺序从高湿度侧传递到低湿度侧，具有优异的透湿透气性；水性聚胺酯树脂重复三次涂层，布面的防水性能(静水压指标)可达到30kPa以上。
本发明的具体技术方案为：一种防水透湿水性聚氨酯环保涂层帐篷织物，基胚经过退浆染色定型之后，采用多次重复涂层的方式，其中涂层整理步骤如下：
(1)聚醚多元醇PU第一次底涂，亲水性聚醚多元醇聚氨酯树脂中添加粉状紫外线屏蔽剂、密胺架桥剂和密胺促进剂，涂层厚度控制在25-30μm，每平米用胶量控制在95-100g/㎡；
(2)聚醚多元醇PU第二次底涂，亲水性聚醚多元醇聚氨酯树脂中添加密胺架桥剂和密胺促进剂，涂层厚度控制在20-25μm，每平米用胶量控制在95-100g/㎡；
(3)聚醚多元醇PU面涂，选用固含量50％左右的亲水性聚氨酯树脂，100份亲水性聚氨酯树脂中添加3份密胺架桥机、2份密胺促进剂和6份耐磨滑爽剂，涂层厚度控制在30-35μm，每平米用胶量控制在100-105g/㎡。
在涂层整理过程中，选用亲水性聚醚多元醇聚氨酯作为底胶和面胶，其上的亲水基团可作为桥梁，使水分子依靠氢键或者其他作用力沿着亲水基团按“吸附-扩散-解吸附”的顺序从高湿度侧传递到低湿度侧，具有优异的透湿透气性，其透湿量高达2000g/(m2·24h)。经过三次水性聚氨酯树脂重复涂层，布面的防水性能(静水压指标)可达到30kPa以上，防水性能提升明显，可以有效避免帐篷面料使用过程中折叠后防水性能下降的问题。选用亲水性聚醚多元醇聚氨酯,利用水代替有机溶剂，可与多种基团反应,与其它多种水性树脂混合程度较好，可通过与其它树脂混合来改进性能,降低生产成本，实现无毒无污染、节能减排的绿色生产。
进一步优选，基胚选用涤纶长丝平纹布，经纬丝规格均为75D/36F，经纬密度要达到192条/英尺以上，将该胚布进行缝头处理。
进一步优选，基胚经过退浆染色之后进行定型防水处理，定型机烘箱温度设定210℃，烘箱停留时间30秒，同时添加氟碳防水剂CPS-L 38G/L，防水处理后的沾水效果检测可达5级以上。
进一步优选，定型之后进行压光整理，采用镜面辊进行压平，控制镜面辊的表面温度为200℃左右，轧点压力控制在130kg/cm2，镜面辊压光行走速度控制50m/min。经过压光整理，使织物组织更紧密，提升涂层面光泽度。
进一步优选，聚醚多元醇PU第一次底涂时，100份亲水性聚醚多元醇聚氨酯树脂中添加0.3-0.7份粉状紫外线屏蔽剂、5份密胺架桥剂和2份密胺促进剂。底涂使用亲水性聚醚多元醇聚氨酯树脂，织物的透湿性能最好，并且同基胚的粘接牢度最佳。粉状紫外线屏蔽剂添加量控制在3-7％时，易溶解易分散且不会影响抗紫外线性能。添加粉状紫外线屏蔽剂之后，底涂层的透射率大于顶涂层的透射率，同时使得紫外线在穿过涂层的连接面时发生反射和折射，避免了更多的紫外线达到印花浆层，通过物理方法避免了单次使用中过多的紫外线接触到变色印花浆，大大提高了防水透湿水性聚氨酯环保涂层帐篷织物的使用寿命。
进一步优选，聚醚多元醇PU第二次底涂时，100份亲水性聚醚多元醇聚氨酯树脂中添加6份密胺架桥剂和3份密胺促进剂。
本发明的有益效果是：在涂层整理过程中，选用亲水性聚醚多元醇聚氨酯作为底胶和面胶，其上的亲水基团可作为桥梁，使水分子依靠氢键或者其他作用力沿着亲水基团按“吸附-扩散-解吸附”的顺序从高湿度侧传递到低湿度侧，具有优异的透湿透气性。
具体实施方式
下面通过具体实施例，对本发明作进一步的描述。
实施例：
一种防水透湿水性聚氨酯环保涂层帐篷织物，采用以下步骤制得：
一、基胚准备：
选用涤纶长丝平纹布，经纬丝规格均为75D/36F，经纬密度要达到192条/英尺以上，将该胚布进行缝头处理。
二、退浆染色：
将接好的基胚投入到溢流染色机内进行退浆并染色，对色后进行还原清洗，色牢度为4级以上。
三、定型防水：
基胚经过退浆染色之后进行定型防水处理，定型机烘箱温度设定210℃，烘箱停留时间30秒，同时添加氟碳防水剂CPS-L 38G/L，防水处理后的沾水效果检测可达5级以上。
四、压光整理：
定型之后进行压光整理，采用镜面辊进行压平，控制镜面辊的表面温度为200℃左右，轧点压力控制在130kg/cm2，镜面辊压光行走速度控制50m/min。
五、涂层整理：
(1)聚醚多元醇PU第一次底涂，亲水性聚醚多元醇聚氨酯树脂中添加粉状紫外线屏蔽剂、密胺架桥剂和密胺促进剂，涂层厚度控制在25-30μm，每平米用胶量控制在95-100g/㎡；100份亲水性聚醚多元醇聚氨酯树脂中添加0.3份粉状紫外线屏蔽剂、5份密胺架桥剂和2份密胺促进剂；
(2)聚醚多元醇PU第二次底涂，亲水性聚醚多元醇聚氨酯树脂中添加密胺架桥剂和密胺促进剂，涂层厚度控制在20-25μm，每平米用胶量控制在95-100g/㎡；100份亲水性聚醚多元醇聚氨酯树脂中添加6份密胺架桥剂和3份密胺促进剂；
(3)聚醚多元醇PU面涂，选用固含量50％左右的亲水性聚氨酯树脂，100份亲水性聚氨酯树脂中添加3份密胺架桥机、2份密胺促进剂和6份耐磨滑爽剂，涂层厚度控制在30-35μm，每平米用胶量控制在100-105g/㎡。
上述工艺制成的帐篷织物，其产品技术指标如下：
以上所述，仅是本发明的较佳实施例，并非对本发明作任何限制，凡是根据本发明技术实质对以上实施例所作的任何简单修改、变更以及等效变换，均仍属于本发明技术方案的保护范围。
Claims (6)
1.一种防水透湿水性聚氨酯环保涂层帐篷织物，其特征在于，基胚经过退浆染色定型之后，采用多次重复涂层的方式，其中涂层整理步骤如下：
（1）聚醚多元醇PU第一次底涂，亲水性聚醚多元醇聚氨酯树脂中添加粉状紫外线屏蔽剂、密胺架桥剂和密胺促进剂，涂层厚度控制在25-30μm，每平米用胶量控制在95-100g/㎡；
（2）聚醚多元醇PU第二次底涂，亲水性聚醚多元醇聚氨酯树脂中添加密胺架桥剂和密胺促进剂，涂层厚度控制在20-25μm，每平米用胶量控制在95-100g/㎡；
（3）聚醚多元醇PU面涂，选用固含量50%左右的亲水性聚氨酯树脂，100份亲水性聚氨酯树脂中添加3份密胺架桥机、2份密胺促进剂和6份耐磨滑爽剂，涂层厚度控制在30-35μm，每平米用胶量控制在100-105g/㎡。
2.根据权利要求1所述的一种防水透湿水性聚氨酯环保涂层帐篷织物，其特征在于，基胚选用涤纶长丝平纹布，经纬丝规格均为 75D/36F ，经纬密度要达到192条/英尺以上，将该胚布进行缝头处理。
3.根据权利要求1所述的一种防水透湿水性聚氨酯环保涂层帐篷织物，其特征在于，基胚经过退浆染色之后进行定型防水处理，定型机烘箱温度设定210℃，烘箱停留时间30秒，同时添加氟碳防水剂CPS-L 38G/L，防水处理后的沾水效果检测可达5级以上。
4.根据权利要求1或2或3所述的一种防水透湿水性聚氨酯环保涂层帐篷织物，其特征在于，定型之后进行压光整理，采用镜面辊进行压平，控制镜面辊的表面温度为200℃左右，轧点压力控制在130kg/cm²，镜面辊压光行走速度控制50m/min。
5.根据权利要求1所述的一种防水透湿水性聚氨酯环保涂层帐篷织物，其特征在于，聚醚多元醇PU第一次底涂时，100份亲水性聚醚多元醇聚氨酯树脂中添加0.3-0.7份粉状紫外线屏蔽剂、5份密胺架桥剂和2份密胺促进剂。
6.根据权利要求1所述的一种防水透湿水性聚氨酯环保涂层帐篷织物，其特征在于，聚醚多元醇PU第二次底涂时，100份亲水性聚醚多元醇聚氨酯树脂中添加6份密胺架桥剂和3份密胺促进剂。
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