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毕节防腐木厂家分析开裂原因及改善方法;

发布日期:2018-01-15 作者:毕节防腐木厂家 点击:

毕节防腐木厂家分析开裂原因及改善方法;

毕节防腐木厂家

Bijie anticorrosion wood manufacturers analyze the causes of cracking and the methods of improvement.


     实际生活中,我们的生活水平明显提高,在我们的身边出现了许多毕节防腐木,它的应用范围非常广泛。据毕节防腐木厂家865棋牌APP所了解,毕节防腐木材由于它的天然性和舒适性,很适合用于在建筑的外部景观中,实用,自然美观。但是木材肯定会有开裂的现象。防腐木开裂原因是:木材在大气中会天然枯燥,外表的水分蒸腾得很快,含水率首先将低,外表开始干缩。可是其实内层的含水率仍是很高,没有发生干缩,这样,外层要缩短,如果内层不缩短就产生了外部受拉、内部所受压的内应力,当拉应力超越木材的抗拉强度极限时,木材的安排就会受到破坏,产生开裂。

In real life, our living standard has been improved obviously. There are many Bijie antiseptic wood around us. It has a wide range of application. According to the understanding of Bijie antiseptic wood manufacturer, Bijie anticorrosive wood is suitable for building exterior landscape because of its natural and comfort. It is practical, natural and beautiful. But there will be a crack in the wood. The reason for the cracking of the anticorrosion wood is that the wood will be naturally dry in the atmosphere, the moisture of the exterior is rapidly evaporated, the moisture content will be low and the appearance begins to shrink. But in fact, the inner moisture content is very high, no shrinkage occurs, so that the outer layer should be shortened if the inner layer is not produced by shortening the external stress, internal pressure, tensile stress ultimate tensile strength than wood, wood arrangements would be destroyed, cracking.


    含水率的改变是木材开裂最主要的原因,木材在室内运用的时分,因为现已枯燥到了平衡含水率,室内的含水率也相对安稳,因而呈现开裂状况会很少。而木材于室外运用时,受天气的影响极大,尤其在雨水丰厚的南边,如果长时间的阴雨天气之后马上呈现暴晒,木材表里含水率相差大且改变快,长时间这样循环,就会加快木材开裂。别的,大尺度的木材更简单开裂,因为大尺度木材内部更难枯燥,且干缩湿胀的各向异性在大尺度木材中更显着。

The change of moisture content is the main reason for wood cracking. When wood is used indoors, because it has been dry to the equilibrium moisture content and the indoor water content is relatively stable, the cracking will be very few. When wood is used outdoors, it will be greatly affected by the weather. Especially in the south of the rainwater, if it is exposed to sunshine after a long time of rainy weather, it will accelerate the wood cracking if there is a big difference between the inside and outside moisture content of the wood and the change is fast. In addition, large scale wood is easier to crack, because the interior of large scale wood is more difficult and dry, and the anisotropy of dry shrinkage and swelling is more significant in large scale wood.


    毕节防腐木改进的办法依据木材开裂的原因来看,坚持木材含水率的相对安稳和削减木材的内应力是削减木材开裂的途径。因为室外运用木材环境改变大,环境含水率无法控制,只能削减木材与水的实践触摸。如在木材外表涂刷涂料,削减木材与水分的触摸;别的可用防水剂处理木材,降低木材的吸水性。别的,在安稳的环境下,对木材进行枯燥,在枯燥过程中缓慢开释木材的一些内应力,在必定程度上也可削减开裂。因为木材是一种天然的生物资料,每根木材都有其不同的性质,因而无法经过工艺到达彻底一致。木材的开裂、变形等性质是其作为一种生物资料的固有特点之一。

According to the reasons of wood cracking, the way to improve wood preservation in Bijie is to stick to the relative stability of wood moisture content and reduce the internal stress of wood, which is the way to reduce wood cracking. Because the outdoor use of wood environment is big, the water content of the environment can not be controlled, it can only reduce the practical touch of wood and water. Such as paint paint on the surface of wood, reduce the touch of wood and water; other waterproofing agents can be used to treat wood, reducing the water absorbability of wood. In addition, in a stable environment, it is boring for wood, slow releasing some internal stresses in wood and reducing cracking in a certain extent. Because wood is a natural biological data, each wood has its different properties, so it can not be completely consistent through the process. The properties of wood cracking and deformation are one of the inherent characteristics of the wood as a biological data.


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