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相关概念视频

Wood Surfacing01:14

Wood Surfacing

317
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...
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Wood Products01:21

Wood Products

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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...
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Softwoods and Hardwoods01:28

Softwoods and Hardwoods

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Softwoods and hardwoods, derived from different types of trees, are distinguished by their leaf structures and cellular compositions, each serving unique purposes in construction and manufacturing. Softwoods come from cone-bearing trees with needle-like leaves and are predominantly composed of longitudinal cells called tracheids and a smaller proportion of radial cells known as rays. Due to their cellular structure, softwoods are commonly used in construction for structural frames, sheathing,...
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Wood Panel Products01:18

Wood Panel Products

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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...
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Manufacture of Concrete Masonry Units01:27

Manufacture of Concrete Masonry Units

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The process of manufacturing concrete masonry units begins by mixing stiff concrete composed of Portland cement, aggregates, and water. This mixture is then poured into metal molds. To ensure the concrete settles uniformly and to avoid separation of its components, the mixture in the molds is subjected to vibration. Shortly after, the still-wet blocks are removed from the molds and placed on racks.
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In wood construction, fasteners are essential for securing components together, with the connection strength largely dependent on the direct bearing between members. Various types of fasteners are employed, each suited to specific applications and structural requirements.
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一个高效的,低成本的表面激活向多功能木制造业.

Kun Zhang1, Xiaozhen Liu2, Xueqin Fan1

  • 1Key Laboratory of Bio-based Material Science & Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, China.

ACS nano
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PubMed
概括

一种新的紫外线辅助过氧化 (H2O2) 表面激活方法简化了木材的功能化,以实现可持续的应用. 这种高效的工艺增强了木材的性能,如耐火性和防,为成本和环境带来了好处.

关键词:
功能化的功能化.浸处理 浸处理照相辅助的氧化方式表面激活的激活方式木材纳米修饰木材的纳米修饰

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科学领域:

  • 材料科学 材料科学 材料科学
  • 可持续化学 可持续化学
  • 木材科学 木材科学 木材科学

背景情况:

  • 传统的木材改造方法往往很复杂,阻碍了实际应用.
  • 可持续发展目标需要高效和环保的木材功能化技术.

研究的目的:

  • 为多功能木制造开发一种简单,高效,低成本的表面激活方法.
  • 提高木材的性能,用于节能建筑,轻型车辆和水处理等应用.

主要方法:

  • 紫外线辅助过氧化 (H2O2) 处理用于木材表面的光辅助氧化.
  • 利用毛细血管力自动浸功能前体.
  • 包括氨基聚酸盐用于防火和防菌.

主要成果:

  • 氧化木材细胞壁显示氧基团增加,增强浸.
  • 用聚酸盐激活的木材显著改善了耐火性 (39%的热量释放量减少,点火时间长达1.71倍) 和防.
  • 技术经济分析显示,能源 (92.5%) 和试剂成本 (76.8%) 显著降低,市场利能力提高 (169.1%).
  • 生命周期评估显示,与传统方法相比,碳排放量减少了43%.
  • 表面激活使光和光热转换通过光和石墨浸.

结论:

  • 紫外线辅助的H2O2表面激活是一种高效,具有成本效益和可定制的方法,用于创建多功能木材材料.
  • 这种方法大大提高了木制品的低碳制造,提高了其性能和减少了对环境的影响.