CN112177181A - 一种建筑用真空绝热板 - Google Patents
一种建筑用真空绝热板 Download PDFInfo
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Abstract
本发明公开了一种既能够减少真空绝热应用过程冷热桥效应又可以加强了真空绝热板表面防护的建筑用真空绝热板。该建筑用真空绝热板，包括芯材、阻气袋，所述芯材设置在阻气袋内且阻气袋抽真空密封，所述阻气袋外表面设置有防护层，所述防护层由增稠剂、瓷砖专用背覆胶、疏水剂、水、50‑200目的闭孔珍珠岩按照一定比例的重量份数混合后搅拌均匀，并涂覆于阻气袋表面，烘干得到，本发明所述的防护层主要由具有保温功能的珍珠岩层构成，使得防护层具有保温功能，可以大大减少建筑用真空绝热应用过程冷热桥效应，同时也加强了对真空绝热板表面的防护。适合在建筑材料领域推广运用。
Description
技术领域
本发明属于建筑材料领域，具体涉及一种建筑用真空绝热板。
背景技术
众所周知的：真空绝热板是真空保温材料的一种，是目前世界上最先进的高效保温材料，广泛用于保温绝热，如家用冰箱、深冷冰柜、电热水器、冷冻箱、冷藏集装箱、建筑墙体保温等。
真空绝热板主要由芯材、吸附剂、阻气袋、防护层组成，制作方法：把芯材、吸附剂放入阻隔阻气袋中，抽真空并封口。其保温原理：芯材具有低导热特性；抽真空降低空气对流；阻隔防护袋使用的多层复合阻隔膜，能有效阻挡真空绝热板外部水、气的渗透。真空绝热板采用的防护层普遍采用玻璃纤维布，它具有一定的防穿刺、耐磨功能，且能增加与水泥的附着力，缺点是此建筑用真空绝热板生产过程不良率较高，因玻纤布纤维较粗较长，对真空设备污染较大，更重要的是在上墙施工过程中，板与板之间的缝隙会产生冷热桥效应，如果处理不好会大大地降低墙面保温效果。
发明内容
本发明所要解决的技术问题是提供一种既能够减少真空绝热应用过程冷热桥效应又可以加强了真空绝热板表面防护的建筑用真空绝热板。
本发明解决其技术问题所采用的技术方案为：该建筑用真空绝热板，包括芯材、阻气袋，所述芯材设置在阻气袋内且阻气袋抽真空密封，所述阻气袋外表面设置有防护层，所述防护层采用如下方法得到：首先，将增稠剂、瓷砖专用背覆胶、疏水剂、水、50-200目的闭孔珍珠岩按照以下重量份数混合后搅拌均匀，50-200目的闭孔珍珠岩40-60份、增稠剂5-6份、瓷砖专用背覆胶10-20份、疏水剂5-10份、水30-40份，将搅拌均匀的混合物料涂覆于阻气袋表面，厚度约为3-5mm，然后放入50-60℃的环境中烘干即可得到防护层。
进一步的是，所述芯材采用如下方法制成：首先，将玻璃纤维原棉经500-600℃高温热压形成块状玻璃纤维板材，块状玻璃纤维板材的密度为150-250KG/m3，真空压缩率≤10％，将块状玻璃纤维板材裁剪后得到芯材。
进一步的是，所述芯材采用如下方法制成：将超细SiO2粉末与玻璃纤维混合均匀后利用模具压缩成型形成块状玻璃纤维板材，块状玻璃纤维板材的密度为150-250KG/m3，真空压缩率≤10％，将块状玻璃纤维板材裁剪后得到芯材。
进一步的是，所述芯材表面嵌设有吸附剂。
进一步的是，所述吸附剂由活性氧化钙、钡锂合金、催化剂中的任意一种或两种、三种混合而成。
进一步的是，所述阻气袋由尼龙薄膜层、聚对苯二甲酸乙二醇酯树脂薄膜层、流延聚丙烯薄膜层、乙烯/乙烯醇共聚物薄膜层、铝箔膜层中的至少两个膜层与聚乙烯层复合成，且聚乙烯层为内层。
进一步的是，所述增稠剂为羟丙基甲基纤维素。
本发明的有益效果在于：该建筑用真空绝热板的防护层由增稠剂、瓷砖专用背覆胶、疏水剂、水、50-200目的闭孔珍珠岩按照一定比例的重量份数混合后搅拌均匀，并涂覆于阻气袋表面，烘干得到，本发明所述的防护层主要由具有保温功能的珍珠岩层构成，使得防护层具有保温功能，可以大大减少建筑用真空绝热应用过程冷热桥效应，同时也加强了对真空绝热板表面的防护。
附图说明
图1为本发明所述建筑用真空绝热板结构示意图；
图中标记说明：芯材1、吸附剂2、阻气袋3、防护层4。
具体实施方式
下面结合附图对本发明的具体实施方式作进一步的说明。
如图1所示，本发明所述的建筑用真空绝热板，包括芯材1、阻气袋3，所述芯材1设置在阻气袋3内且阻气袋3抽真空密封，所述阻气袋3外表面设置有防护层4，所述防护层4采用如下方法得到：首先，将增稠剂、瓷砖专用背覆胶、疏水剂、水、50-200目的闭孔珍珠岩按照以下重量份数混合后搅拌均匀，50-200目的闭孔珍珠岩40-60份、增稠剂5-6份、瓷砖专用背覆胶10-20份、疏水剂5-10份、水30-40份，将搅拌均匀的混合物料涂覆于阻气袋表面，厚度约为3-5mm，然后放入50-60℃的环境中烘干即可得到防护层。
该建筑用真空绝热板的防护层4由增稠剂、瓷砖专用背覆胶、疏水剂、水、50-200目的闭孔珍珠岩按照一定比例的重量份数混合后搅拌均匀，并涂覆于阻气袋表面，烘干得到，本发明所述的防护层4主要由具有保温功能的珍珠岩层构成，使得防护层4具有保温功能，可以大大减少建筑用真空绝热应用过程冷热桥效应，同时也加强了对真空绝热板表面的防护。
在上述实施方式中，所述芯材3可以采用如下方法制成：首先，将玻璃纤维原棉经500-600℃高温热压形成块状玻璃纤维板材，块状玻璃纤维板材的密度为150-250KG/m3，真空压缩率≤10％，将块状玻璃纤维板材裁剪后得到芯材3。也可以采用如下方法制成：将超细SiO2粉末与玻璃纤维混合均匀后利用模具压缩成型形成块状玻璃纤维板材，块状玻璃纤维板材的密度为150-250KG/m3，真空压缩率≤10％，将块状玻璃纤维板材裁剪后得到芯材3。这两种方法得到的芯材3真空压缩率均≤10％，在大气状态下不膨胀，有效避免了真空绝热板鼓胀的问题，可以大大减小真空绝热板的安全隐患。
为了避免阻气袋3密封后内部具有少量气体和水分，所述芯材1表面嵌设有吸附剂2。
进一步的是，所述吸附剂2由活性氧化钙、钡锂合金、催化剂中的任意一种或两种、三种混合而成。
阻气袋3具有阻气阻湿作用，为了保证阻气阻湿的效果，所述阻气袋3由尼龙薄膜层、聚对苯二甲酸乙二醇酯树脂薄膜层、流延聚丙烯薄膜层、乙烯/乙烯醇共聚物薄膜层、铝箔膜层中的至少两个膜层与聚乙烯层复合成，且聚乙烯层为内层。
所述增稠剂可以是现有的各种增稠剂，作为优选的，所述增稠剂为羟丙基甲基纤维素。
Claims (7)
1.一种建筑用真空绝热板，包括芯材(1)、阻气袋(3)，所述芯材(1)设置在阻气袋(3)内且阻气袋(3)抽真空密封，所述阻气袋(3)外表面设置有防护层(4)，其特征在于：所述防护层(4)采用如下方法得到：首先，将增稠剂、瓷砖专用背覆胶、疏水剂、水、50-200目的闭孔珍珠岩按照以下重量份数混合后搅拌均匀，50-200目的闭孔珍珠岩40-60份、增稠剂5-6份、瓷砖专用背覆胶10-20份、疏水剂5-10份、水30-40份，将搅拌均匀的混合物料涂覆于阻气袋(3)表面，厚度约为3-5mm，然后放入50-60℃的环境中烘干即可得到防护层(4)。
2.如权利要求1所述的芯膜一体化的建筑用真空绝热板，其特征在于：所述芯材(1)采用如下方法制成：首先，将玻璃纤维原棉经500-600℃高温热压形成块状玻璃纤维板材，块状玻璃纤维板材的密度为150-250KG/m3，真空压缩率≤10％，将块状玻璃纤维板材裁剪后得到芯材(1)。
3.如权利要求1所述的芯膜一体化的建筑用真空绝热板，其特征在于：所述芯材(1)采用如下方法制成：将超细SiO2粉末与玻璃纤维混合均匀后利用模具压缩成型形成块状玻璃纤维板材，块状玻璃纤维板材的密度为150-250KG/m3，真空压缩率≤10％，将块状玻璃纤维板材裁剪后得到芯材(1)。
4.如权利要求1所述的芯膜一体化的建筑用真空绝热板，其特征在于：所述芯材(1)表面嵌设有吸附剂(2)。
5.如权利要求4所述的芯膜一体化的建筑用真空绝热板，其特征在于：所述吸附剂(2)由活性氧化钙、钡锂合金、催化剂中的任意一种或两种、三种混合而成。
6.如权利要求5所述的芯膜一体化的建筑用真空绝热板，其特征在于：所述阻气袋(3)由尼龙薄膜层、聚对苯二甲酸乙二醇酯树脂薄膜层、流延聚丙烯薄膜层、乙烯/乙烯醇共聚物薄膜层、铝箔膜层中的至少两个膜层与聚乙烯层复合成，且聚乙烯层为内层。
7.如权利要求6所述的芯膜一体化的建筑用真空绝热板，其特征在于：所述增稠剂为羟丙基甲基纤维素。
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