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珍珠花板材水斑的解决方法
发布时间:2010-09-29 15:12点击次数:66

水斑、湿痕形成原因一是水分自珍珠花板材表面进入,这种现象并不严重,一般经日光照射后很快便可消失。其二是自背面渗透而至珍珠花板材表面,珍珠花板材背面填有水泥砂浆时,由于水泥中含有1~2%的氢氧化纳(NaOH),氢氧化钠对水分的吸附性很强,与潮湿空气中的二氧化碳接触后产生苏打,当有水份渗入时,苏打可吸附大量的水,造成背面水泥砂浆终年不干,并随着温湿度的变化,呈现范围不同的水斑湿痕。

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