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挤塑板带表皮和不带表皮是什么意思

文章来源:https://www.sdjnxps.com/作者:震辉保温材料 发布时间: 2021-07-30
挤塑板是以PS也就是聚苯乙烯颗粒是通过高温融合再加入一些添加剂挤出成型,生产出来的轻质板材。挤塑板分为代表皮和不带表皮。那么,挤塑聚苯板带表皮和不带表皮是什么意思?
Extruded board is a kind of lightweight board made of PS, that is, polystyrene particles, which are extruded by high-temperature fusion and adding some additives. Extruded board is divided into representative skin and non skin. So, what does extruded polystyrene board mean with or without skin?
一般常压发泡挤出都有表皮,硬度要稍大一些,如果是真空发泡,表皮与内部基本一致;不带表皮,是指根据需要,特别是外墙保温,因为常压发泡的挤塑板外表皮比较硬,影响粘结,所以通过处理,刨掉表皮,增加表面积,利于粘结。带表皮与不带表皮的保温性能是有区别的,带表皮的导热系数0.03不带表皮0.033,所以在节能验算、性能检测时取值是有区别的。
Generally, normal pressure foaming extrusion has skin, and the hardness should be slightly larger. If it is vacuum foaming, the skin is basically the same as the interior; Without skin means that according to the needs, especially the external wall insulation, because the external skin of the extruded board foamed under normal pressure is relatively hard, which affects the bonding, so through treatment, the skin is planed off to increase the surface area, which is conducive to bonding. The thermal insulation performance with and without skin is different. The thermal conductivity with skin is 0.03 and without skin is 0.033. Therefore, there are differences in the value of energy-saving calculation and performance testing.
济南挤塑板销售
先从挤塑板生产原理说起,挤塑板是经特殊工艺连续挤出发泡成型的材料,其表面形成的硬膜均匀平整,内部完全闭孔发泡连续均匀,呈蜂窝状结构。
Starting from the production principle of extruded board, extruded board is a material that is continuously extruded and foamed by special process. The hard film formed on its surface is uniform and flat, and the internal closed cell foaming is continuous and uniform, presenting a honeycomb structure.
其实,非去皮挤塑板在0.2至0.5mm厚度的表皮结构中充斥着挤压过度的变形微缩泡孔,其短期热阻高于内部完全闭孔的连体泡孔结构的热阻,但这层表皮积蓄了大量的应力,在应用期应力释放过程中会导致表皮内泡孔部分破壁现象,其热阻也会随之下降,还有一个后果是导致应用期缩尺、翘曲等多种形变,它的实测导热系数以及抗压强度在短期内会“虚高”。
In fact, the non peeled extruded board is full of extruded deformed micro pores in the skin structure with a thickness of 0.2 to 0.5mm, and its short-term thermal resistance is higher than that of the conjoined bubble structure with completely closed pores inside. However, this layer of skin accumulates a lot of stress, which will lead to partial wall breaking of bubbles in the skin during the stress release process during the application period, and its thermal resistance will also decrease. Another consequence is that it will lead to various deformation such as scaling and warping during the application period, Its measured thermal conductivity and compressive strength will be "falsely high" in the short term.
济南挤塑板销售人员认为去皮挤塑板在去皮后应力释放可以达到80%以上,故此后期形变较小,其导热系数及抗压强度会在较长时期内稳定。可见,在建筑外墙外保温工程上应该应用不易变形的“去皮挤塑板”为好。非去皮挤塑板只能用于非形变危害区域内。
Jinan extruded board salesperson believes that the stress release of peeled extruded board can reach more than 80% after peeling, so the later deformation is small, and its thermal conductivity and compressive strength will be stable for a long time. It can be seen that it is better to apply the non deformable "peeled extruded board" in the external insulation engineering of the building exterior wall. Non peeled extruded boards can only be used in non deformation hazard areas.
以上就是关于挤塑板带表皮和不带表皮的介绍,希望对大家了解挤塑板有所帮助。如果大家还有关于挤塑板选型和相关知识需要了解的话,建议您关注我们的网站https://www.sdjnxps.com咨询。
The above is about the introduction of extruded board with skin and without skin. I hope it will be helpful for you to understand extruded board. If you still need to know about the type selection and related knowledge of Extruded Boards, we suggest you pay attention to our website https://www.sdjnxps.com consulting service