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Preparation and characterization of expanded perlite/wood-magnesium composites as building insulation materials
Energy and Buildings ( IF 6.7 ) Pub Date : 2020-11-25 , DOI: 10.1016/j.enbuild.2020.110637
Yunfei Lin , Xingong Li , Qinghua Huang

Installing thermal insulation material in the wall is a major means of improving building energy conservation. However, traditional building insulation materials have defects in varying degrees, including flammability, low strength, and not environment-friendly. To solve this problem, a novel thermal insulation composite composed of expanded perlite (EP)/wood-magnesium (EPWMC) was prepared by filling EP into wood-magnesium composites. The mechanical properties, frost resistance, thermal insulation performance, flame retardancy, and smoke suppression properties of these composites were characterized by scanning electron microscopy, X-ray diffraction spectroscopy, and cone calorimetry. The results revealed that, for EPWMC composites filled with 60–70 mesh EP, the modulus of rupture and elasticity and softening coefficient were all clearly increased. In addition, the thickness swelling of these materials decreased significantly. An inorganic spatial network structure was observed to be formed by the aggregation of hydration products of magnesium cement, which improved composite strength and water resistance. These positive results effectively extended the service life of EPWMC materials and broadened their scope of use in wet conditions. The observed excellent flame retardant and smoke suppression performances yield these composites as ideal building insulation materials for exterior or interior walls.



中文翻译:

膨胀珍珠岩/木镁复合材料作为建筑保温材料的制备与表征

在墙壁上安装保温材料是改善建筑节能的主要手段。然而,传统的建筑隔热材料在不同程度上具有缺陷,包括易燃性,低强度以及不环保。为了解决这个问题,通过将膨胀珍珠岩(EP)/木镁(EPWMC)填充到木镁复合物中来制备新型的隔热复合材料。通过扫描电子显微镜,X射线衍射光谱和锥形量热法对这些复合材料的机械性能,抗冻性,隔热性能,阻燃性和抑烟性能进行了表征。结果表明,对于填充60-70目EP的EPWMC复合材料,其断裂模量,弹性和软化系数均明显增加。另外,这些材料的厚度溶胀显着降低。观察到无机空间网络结构是由镁水泥水化产物的聚集形成的,从而改善了复合强度和耐水性。这些积极的结果有效地延长了EPWMC材料的使用寿命,并扩大了它们在潮湿条件下的使用范围。观察到的优异的阻燃和抑烟性能使这些复合材料成为用于外墙或内墙的理想建筑隔热材料。这些积极的结果有效地延长了EPWMC材料的使用寿命,并扩大了它们在潮湿条件下的使用范围。观察到的优异的阻燃和抑烟性能使这些复合材料成为用于外墙或内墙的理想建筑隔热材料。这些积极的结果有效地延长了EPWMC材料的使用寿命,并扩大了它们在潮湿条件下的使用范围。观察到的优异的阻燃和抑烟性能使这些复合材料成为用于外墙或内墙的理想建筑隔热材料。

更新日期:2020-11-25
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