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Updated: May 10, 2025

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Fabrication and Design of Wood-Based High-Performance Composites
Published on: November 9, 2019
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湿热处理改善圆形竹子的尺寸稳定性和视觉外观
Tong Tang1,2, Changhua Fang2, Zhen Sui1
1School of Art & Design, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
Polymers
|April 28, 2025
概括
湿热处理通过减少裂纹和增强尺寸稳定性来改善竹子的干燥. 这个过程优化了相对湿度,持续时间和温度,以获得更好的竹子质量.
科学领域:
- 材料科学 材料科学 材料科学
- 木材科学 木材科学 木材科学
- 生物材料工程 生物材料工程
背景情况:
- 新砍伐的竹茎在干燥过程中容易发生裂,这是由于内在的生长压力和湿度梯度.
- 裂纹和尺寸不稳定性对竹子在各种应用中的质量和可用性产生负面影响.
- 开发有效的预处理方法对于提高竹子的干燥性能和长期稳定性至关重要.
研究的目的:
- 调查湿热处理在缓解裂纹和改善新砍伐的竹茎尺寸稳定的有效性.
- 优化湿热处理的参数,包括温度,相对湿度和持续时间,以改善竹子的干燥.
- 评估湿热处理对竹子表面特征和胀行为的影响.
主要方法:
- 在大气压下对新砍伐的竹茎进行湿热处理.
- 使用直角L9 (34) 实验设计优化处理参数 (温度,相对湿度,持续时间).
- 评估表面颜色均性,皮质和层完整性,干燥后的尺寸稳定性 (膨胀率) 和水分/水的吸收.
主要成果:
- 湿热处理导致了更均的表面颜色,并减少了在干燥的竹子上的皮状和层的脱落.
- 相对湿度被确定为影响尺寸稳定的最重要因素,其次是治疗持续时间;温度的影响较小.
- 与未经处理的竹子相比,最佳的处理条件 (95%RH,95°C,3小时) 将胀率降低了53.72% (吸收水分) 和62.76% (吸收水分).
- 在不同的高热处理条件下,没有观察到表面颜色的显著变化.
结论:
- 湿热处理是一种有前途的技术,可以提高新砍伐的竹茎的干燥质量和尺寸稳定性.
- 优化湿热条件,特别是高相对湿度和适当的持续时间,是减少竹子胀和裂的关键.
- 这种预处理方法为提高竹子性能和扩大竹子作为可持续材料的应用提供了可行的解决方案.
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