CN111531989A - 一种高阻燃型建筑用防水透气膜 - Google Patents
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Abstract
本发明公开了一种高阻燃型建筑用防水透气膜,包括防水透气膜，防水透气膜上设有透气层，阻燃层A，多孔透气芯，过滤层，阻燃层B，多孔透气层，防水透气膜上的透气层为圆孔透气层，阻燃层A采用阻燃PP透气膜和低克重聚丙烯阻燃无纺布，多孔透气芯采用管道通孔式设计，多孔透气芯采用聚丙烯材料，过滤层内部采用漏斗状通孔设计，对通过的气体进行过滤，同时又能阻挡水的通过，阻燃层B为石棉网层，失眠网层采用棱形网格状设计，本发明设计合理，使薄膜具有透气的同时又能防水，而且，该膜具有很好的耐火性，具有很好的阻燃特点。
Description
技术领域
本发明涉及高阻燃型建筑用防水透气膜技术领域，具体为一种高阻燃型建筑用防水透气膜。
背景技术
目前，国内幕墙结构外保温材料多采用岩棉和玻璃棉等产品，岩棉、玻璃棉在幕墙外保温系统应用中存在在防水透气的问题。通常的做法是岩棉、玻璃棉的两面粘贴铝箔，用锚栓固定在墙上，这样造成保温层及墙体不透气，容易在保温层与墙体间结露，室内排出的湿气又很容易通过板缝进入保温层内，潮湿状态下的岩棉、玻璃棉的导热系数会大幅上升，强度也会大幅下降，并可能会分解崩溃。如果岩棉、玻璃棉不粘贴铝箔保护，其透气性较好，在空气层气流的长期作用下表面细小纤维会飘落，造成通风层的堵塞。因此，应用于幕墙外保温系统的岩棉、玻璃棉的表面需有一层保护膜，这层膜必须防水透气，并有一定的护拉强度。防水透气膜是铺在建筑围护结构保温层之外的一层薄膜，通过对围护结构保温层的包覆，加强建筑的气密性、水密性，同时又令围护结构及室内潮气得以排出，从而达到节能，提高建筑耐久性，保证室内空气质量的作用。
传统的防水透气膜常选用PU膜。PU是Polyurethane的缩写，中文名为聚氨基甲酸酯简称聚氨酯。PU是聚氨酯，PU膜即为聚氨酯薄膜，是一种无毒无害的环保材料，对人体皮肤无任何伤害，并广泛应用于服装面料、医疗卫生、皮革等领域。其弹性佳，轻度高，同时在防水性上虽厚度极薄(0.012-0.035㎜)却有其他材料无法比拟之物性表现(可承受水压在10000㎜水柱以上，15000㎜)。
但是当PU膜表面承受水压在15000㎜水柱以上时，PU膜就可能会出现漏水的情况，因此使得其使用局限性较大，不能在要承受水压在15000㎜水柱以上的环境中使用，对服装、鞋子、口罩生产产业防水效果带来不便因此，需要一种防水透气膜。
发明内容
本发明的目的在于提供一种使薄膜具有透气的同时又能防水，而且，该膜具有很好的耐火性，具有很好的阻燃特点的高阻燃型建筑用防水透气膜，以解决上述背景技术中提出的问题。
为实现上述目的，本发明提供如下技术方案：一种高阻燃型建筑用防水透气膜,包括防水透气膜，所述防水透气膜上设有透气层，阻燃层A，多孔透气芯，过滤层，阻燃层B，多孔透气层，所述透气层，阻燃层A，多孔透气芯，过滤层，阻燃层B，多孔透气层为一体结构。
优选的，所述透气层为圆孔透气层，透气层上均匀设有六边形透气孔，所述透气层的内部设有尼龙加强筋。
优选的，所述阻燃层A采用阻燃PP透气膜和低克重聚丙烯阻燃无纺布。
优选的，所述多孔透气芯采用聚丙烯材料。
优选的，所述过滤层内部采用漏斗状设计。
优选的，所述阻燃层B为石棉网层，阻燃层B内部采用石棉网织造成平行四边形网。
优选的，一种高阻燃型建筑用防水透气膜，其制备方法包括以下步骤：
A、根据设定的重量份配备原料，先将聚丙烯，调节剂和增塑剂搅拌混合，混合均匀后，再加入消泡剂和防老剂继续搅拌混合，形成混合物料，接着将第一混合物放入加入双螺杆挤出机中挤出，得到塑料粒子；料筒温度为180℃-235℃；
B、将塑料粒子于240-270℃进行挤出流延制成厚度3-20S的塑料膜；
C、塑料膜在双向拉伸机上进行5-6倍面积拉伸，制成防水透气膜，并在制备的薄膜两侧表面添加石棉网层以及阻燃PP透气膜和低克重聚丙烯阻燃无纺布。
与现有技术相比，本发明的有益效果是：
(1)阻燃层A采用阻燃PP透气膜和低克重聚丙烯阻燃无纺布，无纺布具有良好的阻燃性，同时具有质量轻的优点；
(2)阻燃层B内部采用石棉网织造成平行四边形网，使塑料薄膜具有良好的阻燃性能；
(3)本发明设计合理，使薄膜具有透气的同时又能防水，而且，该膜具有很好的耐火性，具有很好的阻燃特点。
附图说明
图1为本发明防水透气膜结构示意图；
图2为本发明防水透气膜截面图；
图3为本发明透气层结构示意图；
图4为本发明阻燃层A结构示意图；
图5为本发明多孔透气芯结构示意图；
图6为本发明过滤层结构示意图。
图中：1、防水透气膜；2、透气层；3、阻燃层A；4、多孔透气芯；5、过滤层；6、阻燃层B；7、多孔透气层。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参阅图1-6,本发明提供一种技术方案：一种高阻燃型建筑用防水透气膜,包括防水透气膜1，其特征在于：所述防水透气膜1上设有透气层2，阻燃层A3，多孔透气芯4，过滤层5，阻燃层B6，多孔透气层7，透气层2，阻燃层A3，多孔透气芯4，过滤层5，阻燃层B7，多孔透气层7为一体结构。
透气层2为圆孔透气层，透气层2上均匀设有六边形透气孔，透气层2的内部设有尼龙加强筋，阻燃层A3采用阻燃PP透气膜和低克重聚丙烯阻燃无纺布，无纺布具有良好的阻燃性，同时具有质量轻的优点，多孔透气芯4采用聚丙烯材料，过滤层5内部采用漏斗状设计，阻燃层B6为石棉网层，阻燃层B6内部采用石棉网织造成平行四边形网，使塑料薄膜具有良好的阻燃性能。
制备方法：根据设定的重量份配备原料，先将聚丙烯，调节剂和增塑剂搅拌混合，混合均匀后，再加入消泡剂和防老剂继续搅拌混合，形成混合物料，接着将第一混合物放入加入双螺杆挤出机中挤出，得到塑料粒子；料筒温度为180℃-235℃，将塑料粒子于240-270℃进行挤出流延制成厚度3-20S的塑料膜，塑料膜在双向拉伸机上进行5-6倍面积拉伸，制成防水透气膜，并在制备的薄膜两侧表面添加石棉网层以及阻燃PP透气膜和低克重聚丙烯阻燃无纺布。
本发明设计合理，使薄膜具有透气的同时又能防水，而且，该膜具有很好的耐火性，具有很好的阻燃特点。
一种高阻燃型建筑用防水透气膜，其制备方法包括以下步骤：
A、根据设定的重量份配备原料，先将聚丙烯，调节剂和增塑剂搅拌混合，混合均匀后，再加入消泡剂和防老剂继续搅拌混合，形成混合物料，接着将第一混合物放入加入双螺杆挤出机中挤出，得到塑料粒子；料筒温度为180℃-235℃；
B、将塑料粒子于240-270℃进行挤出流延制成厚度3-20S的塑料膜；
C、塑料膜在双向拉伸机上进行5-6倍面积拉伸，制成防水透气膜，并在制备的薄膜两侧表面添加石棉网层以及阻燃PP透气膜和低克重聚丙烯阻燃无纺布。
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。
Claims (7)
1.一种高阻燃型建筑用防水透气膜,包括防水透气膜(1)，其特征在于：所述防水透气膜(1)上设有透气层(2)，阻燃层A(3)，多孔透气芯(4)，过滤层(5)，阻燃层B(6)，多孔透气层(7)，所述透气层(2)，阻燃层A(3)，多孔透气芯(4)，过滤层(5)，阻燃层B(7)，多孔透气层(7)为一体结构。
2.根据权利要求1所述的一种高阻燃型建筑用防水透气膜，其特征在于：所述透气层(2)为圆孔透气层，透气层(2)上均匀设有六边形透气孔，所述透气层(2)的内部设有尼龙加强筋。
3.根据权利要求1所述的一种高阻燃型建筑用防水透气膜，其特征在于：所述阻燃层A(3)采用阻燃PP透气膜和低克重聚丙烯阻燃无纺布。
4.根据权利要求1所述的一种高阻燃型建筑用防水透气膜，其特征在于：所述多孔透气芯(4)采用聚丙烯材料。
5.根据权利要求1所述的一种高阻燃型建筑用防水透气膜，其特征在于：所述过滤层(5)内部采用漏斗状设计。
6.根据权利要求1所述的一种高阻燃型建筑用防水透气膜，其特征在于：所述阻燃层B(6)为石棉网层，阻燃层B(6)内部采用石棉网织造成平行四边形网。
7.实现权利要求1所述的一种高阻燃型建筑用防水透气膜，其制备方法包括以下步骤：
A、根据设定的重量份配备原料，先将聚丙烯，调节剂和增塑剂搅拌混合，混合均匀后，再加入消泡剂和防老剂继续搅拌混合，形成混合物料，接着将第一混合物放入加入双螺杆挤出机中挤出，得到塑料粒子；料筒温度为180℃-235℃；
B、将塑料粒子于240-270℃进行挤出流延制成厚度3-20S的塑料膜；
C、塑料膜在双向拉伸机上进行5-6倍面积拉伸，制成防水透气膜，并在制备的薄膜两侧表面添加石棉网层以及阻燃PP透气膜和低克重聚丙烯阻燃无纺布。
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