屋面防水涂层可以通过反射太阳能量而降低屋面的温度,延缓涂层下方屋面材料的降解,并为屋面提供具有长期功能的气候老化阻隔层;在屋面防水涂料的施工过程中,可能会产生一些质量问题。以下是针对这些问题所提出的一些探讨。
The roof waterproof coating can reduce the temperature of the roof by
reflecting the solar energy, delay the degradation of the roof material
under the coating, and provide the roof with a long-term climate aging
barrier; In the construction process of roof waterproof coating, there
may be some quality problems. The following are some discussions on
these problems.
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缩孔:缩孔是在涂层表面形成的一种小碗状缺陷。缩孔通常很小,直径和铅笔差不多或者更小,碗状底部的涂层会非常薄,而其边缘可能会略厚一些。缩孔对涂层质量是十分有害的,紫外光容易透过较薄的涂层降解下方的屋面材料;缩孔区域的涂层拉伸强度减小会导致涂层的早期失效。
Shrinkage cavity: shrinkage cavity is a small bowl shaped defect formed
on the surface of coating. The shrinkage cavity is usually very small,
about the diameter of a pencil or smaller. The coating on the bottom of
the bowl is very thin, and the edge may be slightly thicker. Shrinkage
cavity is very harmful to the quality of coating. Ultraviolet light can
easily degrade the roof material under the thin coating; The decrease of
the tensile strength of the coating in the shrinkage area will lead to
the early failure of the coating.
鱼眼:鱼眼是一种在涂层表面非常小而没有破损的水泡,这些水泡顶部通常非常薄又透明,底部可能出现一个很小的空间。
Fish eye: fish eye is a kind of blister which is very small and
undamaged on the coating surface. The top of these blisters is usually
very thin and transparent, and there may be a small space at the bottom.