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相关概念视频

Porosity in Cement Paste01:18

Porosity in Cement Paste

117
The porosity of concrete is a measure of the void spaces within its structure. These spaces impact its strength and durability significantly. When water and cement interact, a chemical reaction called hydration creates a semi-solid paste. This paste includes combined water, making up approximately 23% of the cement's dry mass, and gel water, which fills minuscule voids known as gel pores, accounting for about 28% of the cement gel volume.
The balance of water to cement in the mix is...
117

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软木粉残留物通过粘合剂喷射加工.

Sara P Magalhães da Silva1,2,3, Iara Castro1,2,3, José M Oliveira1,2,3

  • 1EMaRT Group-Emerging: Materials, Research, Technology, University of Aveiro, Aveiro, Portugal.

3D printing and additive manufacturing
|October 3, 2024
PubMed
概括

研究人员使用粘合剂喷射开发了3D打印的软木材料. 一个自闭柜后处理步骤显著改善了颗粒粘附性,并使复杂的设计成为可能,增强了软木的粘附性.

关键词:
通过3D打印打印3D打印.添加剂制造 添加剂制造 添加剂制造粘合剂喷射 粘合剂喷射软木塞是什么?软木塞是什么?天然物质,自然材料.粉末 粉末 粉末 粉末

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科学领域:

  • 材料科学 材料科学 材料科学
  • 增材制造 增材制造 增材制造
  • 可持续材料 可持续材料

背景情况:

  • 粘合剂喷射 (3DP) 是一种有前途的增材制造技术,用于创建复杂的几何形状.
  • 软木是一种可持续的轻质材料,由于其颗粒特性和对水基结合剂的低亲和力,因此在3DP中存在挑战.
  • 提高颗粒粘附性和可打印性对于扩大3DP中的软木软木的应用至关重要.

研究的目的:

  • 开发和研究适用于粘合剂喷射工艺的软木制剂配方.
  • 为了提高3D打印的软木件件的粘附性和机械性能.
  • 探索3DP软木棉组件改进的自闭体后处理的潜力.

主要方法:

  • 分析了两组不同颗粒大小分布的软木粉的包装能力.
  • 添加了水友性添加剂,以提高粘合剂亲和力.
  • 零件是使用粘合剂喷射制造的,其次是自闭柜后加工步骤.
  • 进行了形态,机械和富里埃变换红外线 (FTIR) 分析.

主要成果:

  • 与较细的分布相比,粗软木粉具有更高的包装能力.
  • 自闭柜后处理显著改善了3DP部件的软木颗粒粘附性.
  • 自闭体处理影响了软木的多糖和亚糖分,增强了机械性能.
  • 取得了复杂的软木设计的成功打印.

结论:

  • 粘合剂喷射,结合自闭槽后处理,是生产高性能3D打印软木棉部件的可行方法.
  • 这种方法可以创建复杂的软木制品,同时保持可取的自然特性,如轻度和柔软度.
  • 这项研究为软木在设计和制造中的可持续和创新的应用开辟了新的途径.