实木地板含水率、多少含水率才是地板的最佳含水率呢?
推荐回答(3个)
实木地板的含水率要适应当地的潮湿度,适应当地木材平衡含水率。好的品牌在不同地区同款地板的含水率是不相同的,而且地板一定是真空密封包装防止运输过程发生变形,在安装时一般会先提前一天打开包装放置用户家中适应家中的环境,为安装打好基础,防止因为温度,湿度等原因产生剧烈收缩膨胀。
当木地板的含水率低于或等于当地木材平衡含水率。问题不是很大,木地板会慢慢吸收水分,前提是差值不是很大,如果差值较大,前期没有适应环境,安装又比较紧,地板可能会拱起。
如果木地板含水率高于当地木材平衡含水率。木地板会慢慢释放水分,时间长了,地板容易干裂。这就是为什么北方的实木家具,实木地板更容易干裂。
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下面各地木材平衡含水率
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实木地板铺装到众多体育场馆和建筑场地,实木地板含水率多少才合适?实木地板含水率的专业知识:
1、实木地板中的水分形式
实木地板中所含的水分有三种形式,一种是存在于细胞腔与细胞间隙中的水,也就是存在于毛细管中的水,称为自由水。第二种是被细胞壁所吸收的水,称为吸附水。第三种是构成细胞组织的水,称为化学水。
2、纤维饱和点含水率
当潮湿的实木地板水分蒸发时,首先失去的是自由水,当自由水蒸发完而吸附水尚处于饱和状态时的含水率,称为纤维饱和点含水率。
纤维饱和点是实木地板性能的转折点,在纤维饱和点之上,实木地板的强度为恒量,不随含水率的变化而变化。同时实木地板也没有胀缩这种体积上的变化。当含水率降至纤维饱和点之下,也就是细胞壁中的吸附水开始蒸发时,强度随含水率下降而增加,而湿胀干缩的现象也明显呈现出来。不同的实木地板纤维饱和点含水率约在22% ~33%之间。
3、地板平衡点含水率
自然界中各地区的湿度和温度在不同的季节都有相对的稳定。实木地板长时间地处在这种相对温湿度环境中,其含水率会达到会达到一个相对的恒定。这时的含水率就称为平衡含水率(例如上海地区的年平衡含水率为15.6%%)。
实木地板的平衡含水率随它们所处环境的温度和湿度的变化而变化,当平衡含水率和环境湿度有差值时,会趋向于接近环境。这就产生了实木地板的湿胀与干缩现象,这是实木地板特有的物理现象。由此可见,控制好地板的含水率是十分重要的。不但生产中必须重视,在铺设中更应重视,不让地板受潮产生变形。
体育木地板木材置于一定的环境下,在足够长的时间后,其含水率会趋于一个平衡值,称为该环境的平衡含水率EMC。当木材含水率高于环境的平衡含水率时,木材会排湿收缩,反之会吸湿膨胀。所以说,体育木地板木材干燥要适当,并非越干越好。不同地区、不同用途,对木材含水率的要求也是不一样的。
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篮球馆木地板
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