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Evaluation of self-thermally treated wood plastic composites from wood bark and rapeseed oil-based binder
Construction and Building Materials ( IF 7.4 ) Pub Date : 2020-03-31 , DOI: 10.1016/j.conbuildmat.2020.118842
Agnė Kairytė , Arūnas Kremensas , Giedrius Balčiūnas , Ieva Matulaitienė , Sylwia Członka , Natalia Sienkiewicz

In order to construct sustainable and approachable buildings it is necessary to develop efficient building materials (thermal insulation, structural and sound-absorbing) with lower environmental impact, especially regarding the carbon footprint. Therefore, this study examines a wood-plastic composite (WPC) from wood bark particles and rapeseed oil-based binding material. The advantage of this WPC is sufficient thermal insulation and self-bearing properties for structural application. Additionally, thermal treatment or loading conditions during production are not required, which is energy and cost-efficient. WPCs were produced from different ratios of binding material and wood bark particles, 0.70, 0.75, 0.80, 0.85, 0.90, 0.95 and 1.0. The highest strength characteristics are found with the WPC-0.85 samples, however, water resistance properties such as water absorption and thickness swelling after 28 days of immersion are only reasonable. The WPC obtained at 0.85 binding material/wood bark particles ratio is characterised by density – 357 kg/m3, thermal conductivity – 0.0706 W/(m·K), compressive strength – 1.8 MPa, bending strength – 1.2 MPa, tensile strength – 0.23 MPa, water absorption by total immersion – 38.2 vol% and thickness swelling – 2.5%.



中文翻译:

由木树皮和菜籽油基粘合剂自热处理木塑复合材料的评估

为了建造可持续发展的平易近人的建筑,必须开发对环境影响较小的高效建筑材料(隔热,结构和吸音),尤其是在碳足迹方面。因此,这项研究检查了由木树皮颗粒和菜籽油基粘合材料制成的木塑复合材料(WPC)。这种WPC的优点是对于结构应用具有足够的隔热和自承重性能。另外,在生产过程中不需要热处理或装载条件,这是节能且具有成本效益的。WPC由不同比例的粘合材料和木树皮颗粒制成,分别为0.70、0.75、0.80、0.85、0.90、0.95和1.0。WPC-0.85样品具有最高的强度特性,但是,浸泡28天后的吸水性和厚度膨胀等耐水性特性才是合理的。以0.85的粘合材料/木树皮颗粒比获得的WPC的特征在于密度– 357 kg / m3,导热率– 0.0706 W /(m·K),抗压强度– 1.8 MPa,弯曲强度– 1.2 MPa,抗张强度– 0.23 MPa,全浸水吸收– 38.2体积%,厚度溶胀– 2.5%。

更新日期:2020-04-01
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