Evaluation of the Possibility of Using a Wood-Based Composite Material for Layered Formation of Items Considering Thermomechanical Properties

IF 0.5 4区 工程技术 Q4 CHEMISTRY, MULTIDISCIPLINARY Fibre Chemistry Pub Date : 2024-09-18 DOI:10.1007/s10692-024-10511-4
N. V. Evdokimov, A. M. Baganik, N. P. Midukov, V. S. Kurov, E. L. Akim
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Abstract

A composite material based on sawdust and a binder, which was a multicomponent synthetic polymer and thermosetting plastic, in particular, a modified epoxy resin with a hardener, was studied. The ability to use the composite material for layered preparation of items was confirmed by results of thermomechanical studies. The temperatures at which the composite material with a sawdust content up to 30% transitioned from a glassy state to a highly elastic state were determined. The temperature intervals characteristic of a plateau of the highly elastic state and the transition temperature of the multicomponent composite polymer into a viscous-flow state were determined. The results allowed the optimal content of sawdust in the composite material to be established (20-25%), which corresponded to a stronger state of the material. The results agreed with the tendency to increase the mechanical properties and change thermomechanical curves of wood-based composites shown by scientists from various countries. The novelty consisted of the established limits for the sawdust concentration in the thermosetting plastic, which was a multicomponent composite based on epoxy resin with a hardener. The practical significance of the work was associated with the production of the required temperature and time modes for 3D-printer operating on additive technology for deposition of a polymer in a liquid aggregate state.

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考虑到热力学特性,评估使用木基复合材料分层制作物品的可能性
研究了一种基于锯末和粘合剂的复合材料,这种粘合剂是一种多组分合成聚合物和热固性塑料,特别是一种带有固化剂的改性环氧树脂。热力学研究结果证实了使用这种复合材料分层制备物品的能力。确定了锯末含量高达 30% 的复合材料从玻璃态过渡到高弹性态的温度。确定了高弹性状态高原特征的温度区间以及多组分复合聚合物向粘流状态过渡的温度。结果确定了复合材料中锯屑的最佳含量(20%-25%),这与材料的强度状态相对应。这些结果与各国科学家提出的提高木基复合材料机械性能和改变其热力学曲线的趋势一致。新颖之处在于确定了热固性塑料中锯屑浓度的限制,这种塑料是一种基于环氧树脂和固化剂的多组分复合材料。这项工作的实际意义在于为采用添加剂技术沉积液态聚合体的三维打印机设定了所需的温度和时间模式。
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来源期刊
Fibre Chemistry
Fibre Chemistry 工程技术-材料科学:纺织
CiteScore
0.70
自引率
60.00%
发文量
70
审稿时长
6-12 weeks
期刊介绍: Fibre Chemistry publishes original research and review articles in the field of man-made fibre production and application. The journal offers scientific and technical articles on the following aspects: chemistry, technology, machinery and economics of man-made production; the initial monomers and polymers; the properties of man-made fibres and their processing in various industry branches (textiles, rubber, composites, etc).
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