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使用劣质挤塑板会有哪些危害?
作者:admin 来源:本站 发布时间:2019-03-12 11:34:38 浏览次数:104
XPS挤塑板广泛应用于建筑物屋面保温、钢结构屋面、建筑物墙体保温、建筑物地面保湿、广场地面、地面冻胀控制、中央空调通风管道等。生活中,使用劣质挤塑板可能会有哪些危害呢?
XPS Extrusion board is widely used in building roof insulation, steel structure roof, building wall insulation, building floor moisture, square floor, ground frost heave control, central air conditioning ventilation pipeline and so on. What harm may the use of inferior extrusion boards do in life?
1、有很多劣质的挤塑板都是由回收塑料制造的,回收塑料的来源包括了:塑料饭盒,蛋糕盒,电视机外壳,洋垃圾等等。 塑料的回收再造,本身是有利于环境。但由于目前国内塑料回收企业水平低,绝大多数企业都还停留在小作坊状态。跟本没有能力分别出哪些塑料是有毒,不可回收再造的。大量充斥着重金属、有毒的聚氯乙烯。回收料在地暖高温下会释放出大量不明有害气体,不仅难闻,还会对人的眼睛和呼吸道黏膜产生强烈的刺激作用,轻者可引起头痛、恶心、过敏等症状,重者则可导致人的肝和神经系统的损伤,对人体健康危害非常大。
1. Many inferior extruded boards are made of recycled plastics. The sources of recycled plastics include plastic lunch boxes, cake boxes, TV shells, foreign garbage and so on. The recycling of plastics is beneficial to the environment. However, due to the low level of domestic plastic recycling enterprises, most of them are still in the small workshop state. There is no ability to distinguish which plastics are toxic and not recyclable. A large number of heavy metal, toxic polyvinyl chloride. Recycled materials will release a large number of unknown harmful gases under warm and high temperature, which not only smells bad, but also has a strong stimulating effect on human eyes and respiratory mucosa. Light ones can cause headache, nausea, allergies and other symptoms. Heavy ones can cause damage to human liver and nervous system, which is very harmful to human health.

2、使用劣质的挤塑板就容易造成地面沉降,开裂。回收再造过程,需将聚苯乙烯重新高温熔化,这会导致大量分子链断裂,结果就是挤塑板强度大幅降低。很多小厂为了降低成本,尽量的降低挤塑板密度,也直接导致了挤塑板抗压性过低,达不到国家规定的使用标准。

2. It is easy to cause land subsidence and cracking by using inferior extrusion board. In the recycling process, polystyrene needs to be melted at high temperature again, which will lead to a large number of molecular chain breakage, resulting in a significant reduction in the strength of the extruded sheet. In order to reduce the cost and reduce the density of the extruded sheet, many small factories have directly led to the low compressive strength of the extruded sheet, which can not meet the national standards.
3、挤塑板保温隔热效果差,失去了原本保温隔热的基本作用。衡量绝热材料绝热效果的主要指标为导热系数。导热系数越低,绝热效果越好。而劣质挤塑板的导热系数低保温效果差,不仅浪费了资金,而且还没有到达预想的效果。
3. The thermal insulation effect of extruded board is poor, and it loses the basic function of thermal insulation. The thermal conductivity is the main index to measure the insulation effect of insulation materials. The lower the thermal conductivity, the better the insulation effect. However, the low thermal conductivity and poor thermal insulation effect of inferior extruded panels not only wastes money, but also fails to achieve the desired effect.
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