研究Al2O3微粒对木材废弃物OSB的影响:关于物理,机械和耐久性性能的研究
Wanley Eduardo Lopes Junior1, Matheus Roberto Cabral2, André Luis Christoforo3
1Graduate Program in Materials Science and Engineering, Faculty of Animal Science and Food Engineering, Campus Pirassununga, University of São Paulo, Pirassununga, 13635-900, SP, Brazil.
Polymers
|June 28, 2023
概括
将氧化 (Al2O3) 微粒添加到由木和麻油树脂制成的定向链板 (OSB) 中,可以提高其耐用性. 在加速衰老后,增强的OSB显示出减少胀和更好的内部结合.
科学领域:
- 材料科学 材料科学 材料科学
- 木材复合材料 木材复合材料
- 纳米技术 纳米技术
背景情况:
- 建筑行业寻求使用副产品和先进技术的可持续材料.
- 微粒由于其较大的表面积而增强了材料的性能.
- 面向螺纹板 (OSB) 是工程木制产品,有可能包含新型添加剂.
研究的目的:
- 研究氧化 (Al2O3) 微粒对木 OSB 物理,机械和耐久性质的影响.
- 评估这些复合材料在加速老化条件下的性能.
- 确定最佳的Al2O3含量,以提高OSB的特性.
主要方法:
- 实验室规模生产OSB,使用剩余的木丝和麻油基聚氨树脂.
- 将不同百分比 (1-3%) 的Al2O3微粒纳入树脂粘合剂中.
- 根据EN-300:2002标准对物理和机械性能进行评估.
- 通过加速老化测试来评估耐用性.
主要成果:
- 与对照样本相比,含有2%Al2O3的OSB在加速老化后的厚度胀明显较低.
- 通过添加Al2O3微粒来增强OSB的内部粘合强度.
- 加入Al2O3对木OSB的微观结构和整体性能产生了积极的影响.
结论:
- 氧化微粒有效地提高了木 OSB 的耐用性和机械完整性.
- 添加2%的Al2O3代表了开发先进建筑材料的有希望的配方.
- 这项研究强调了利用微粒技术提高可持续木材复合材料产品性能的潜力.
更多相关视频
相关概念视频
Wood Products
112
Wood products encompass a broad range of materials crafted from wood strands, veneers, lumber, and even waste wood-like shreds, designed for both structural and nonstructural purposes. Various specialized wood products have been developed to enhance strength, durability, and versatility in building applications.
Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...
Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...
112
Wood Panel Products
96
Wood panel products are essential materials used in construction for applications such as flooring, siding, and roofing, typically available in standard dimensions of 4 feet by 8 feet, with thicknesses varying from one-quarter of an inch to one and one-eighth inches. Among the most common types of wood panels is plywood, which is produced by gluing multiple layers of thin wood veneers under pressure. The grain of the outer veneers runs lengthwise, while the grains of the interior layers run...
96
Seasoning of Wood
132
Seasoning of wood is a crucial process aimed at reducing and stabilizing the moisture content within the wood to prevent future shrinkage, structural damage, or aesthetic issues once the wood is used in construction. Wood naturally swells when it absorbs moisture and contracts as it dries.
Achieving equilibrium moisture content is the goal of seasoning; this is the point where the wood's moisture content stabilizes to align with the moisture levels of the surrounding environment. Proper...
Achieving equilibrium moisture content is the goal of seasoning; this is the point where the wood's moisture content stabilizes to align with the moisture levels of the surrounding environment. Proper...
132
Structural Properties and Dimensions of Lumber
129
Wood's structural properties derive from fibers aligned along the tree's length, contributing significantly to its mechanical strength. Wood exhibits up to twenty times greater tensile strength along these fibers compared to across them, and generally shows better performance under compression than tension. The length of fibers varies, with hardwoods having fibers around one twenty-fifth inch long and softwoods ranging from one-eighth to one-third inch.
The strength characteristics of...
The strength characteristics of...
129
Introduction to Wood
276
Wood, derived from trees, is a versatile and widely used construction material. Trees feature a trunk surrounded by a protective layer of dead bark. Beneath this outer layer lies the living bark, followed by the cambium, and then the sapwood which transitions into heartwood as it matures. At the center of the trunk is the pith. The age of a tree can be discerned by examining its growth rings, which are concentric bands visible in the trunk's cross-section.
The structural integrity of the...
The structural integrity of the...
276
Wood Surfacing
120
Wood surfacing is a critical finishing process designed to smoothen the wood surface, enhance its dimensional accuracy, and make handling safer. This process compensates for potential shrinkage during the seasoning phase by marginally increasing the wood dimensions before surfacing. It also helps correct some distortions that may occur as the wood dries.
The equipment used in the surfacing process is a plane equipped with rotating blades. This tool efficiently smoothens the wood surface and can...
The equipment used in the surfacing process is a plane equipped with rotating blades. This tool efficiently smoothens the wood surface and can...
120


