Verification study on the performance of binder-less insulation panel made of wood shavings for wooden frame houses

木结构房屋刨花无粘结剂保温板性能验证研究

基本信息

批准号：
18580160
负责人：
SEKINO Noboru
金额：
$ 2.33万
依托单位：
Iwate University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18580160/
关键词：
wood shavings insulation panel heat storage capacity fire safety thermal conductivity thermal diffusivity vapor condensation vaporization energy 木質小片断熱材 ISO加熱曲線準耐火構造燃焼挙動炭化層燃焼生成水分

项目摘要

The insulation panels developed in this study are composed of wood shavings compressed into a mat with a density of 110 kg/m^3 without any binder. This mat is lapped with plastic film that works as a damp proof course. In this research, fire safety and thermal insulation capacity were investigated. Fire tests conducted with a full-scale-thick wooden frame wall revealed that the test wall filled with our insulation panels had a higher heat shielding performance than the walls filled with fiber-glass. This is because charring of wood shavings generates water and some of it remains near the rear surface of our panels due to an existence of plastic film, and consequently, the water consumes vaporization energy and resulted in keeping a temperature lower than around 100 ℃. The heat shielding performance was found to have a quality equivalent to the 60-minute quasi-fireproof performance stipulated in the Building Standard Law of Japan.Although thermal conductivity of our panel is greater than that of fiber glass, thermal diffusivity measured at 25℃ ranged from 0.4 to 0.5 mm^2/s and are about half the value of fiber-glass due to higher heat capacity. Thermal insulation capacity tests conducted with a one-story experimental house revealed that the cyclic change of room temperature in both winter and summer was smaller than when fiber-glass insulators were used. This is because the heat storage capacity of wood shavings higher than fiber-glass. Furthermore, no vapor condensation was recognized on the lower temperature surface of our panel even when temperature difference of 20℃ rose between panel surfaces in winter.

本研究开发的隔热板由木屑压缩成密度为 110 kg/m^3 的垫子组成，该垫子上覆盖有塑料薄膜，在本研究中起到防潮作用。对全尺寸厚木框架墙进行的安全性和隔热能力调查显示，填充我们的隔热板的测试墙比填充玻璃纤维的墙具有更高的隔热性能，这是因为烧焦。木头的剃须时会产生水，由于塑料膜的存在，其中一些水会残留在我们面板的背面附近，因此，水会消耗蒸发能，导致温度保持在 100°C 左右，从而发现了隔热性能。具有相当于日本建筑标准法规定的60分钟准防火性能的质量。虽然我们的面板的导热率大于玻璃纤维，但在25℃下测得的热扩散率范围为0.4 至 0.5 mm^2/s，由于热容量较高，约为玻璃纤维值的一半。在一层实验房屋中进行的隔热能力测试表明，冬季和夏季室温的循环变化是明显的。比使用玻璃纤维绝缘体时小，这是因为木屑的蓄热能力高于玻璃纤维，此外，即使温差为 20℃，我们的面板的较低温度表面也没有出现蒸汽凝结。冬天在面板表面之间上升。