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粉和纸板增强结构对绝缘纤维泡复合材料的影响
Gregory M Glenn1, Gustavo H D Tonoli2, Luiz E Silva2
1United States Department of Agriculture, Agricultural Research Service, Western Regional Research Center, Bioproducts Research Unit, 800 Buchanan Street, Albany, CA 94710, USA.
Polymers
|April 13, 2024
概括
通过开发环保包装,这项研究创造了用纸板增强的可生物降解纤维素纤维泡. 这些新型复合材料的机械强度与扩展聚乙烯 (EPS) 泡相提并论或更高,是可持续的替代品.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续的包装 包装是可持续的
- 生物复合材料是一种生物复合材料.
背景情况:
- 广泛用于内部包装的一次性塑料泡,由于垃圾填埋堆积而面临环境审查.
- 现有的纤维纤维泡提供绝缘,但缺乏传统塑料泡的机械强度.
- 需要生物降解和可回收的替代品,以石油为基础的包装泡.
研究的目的:
- 开发低密度,机械强度和可生物降解的泡复合材料,作为塑料包装的替代品.
- 研究粉粘合剂和纸板增强剂对纤维素纤维泡的性能的影响.
- 评估新型泡复合材料的机械性能和生物降解性.
主要方法:
- 压缩成型用于制造含有和没有粉 (FF+S) 的纤维素纤维泡 (FF),并用纸板元素 (角形,圆柱形,网格) 加固.
- 测量了机械性能,包括屈曲强度,模量,压缩强度和性.
- 进行呼吸计测试以评估纤维泡的生物降解性.
主要成果:
- 纤维素纤维泡显示出显著的生物降解性 (46天内矿化37-49%).
- 添加粉和纸板增强剂显著提高了机械强度,复合材料的曲和压缩强度与EPS泡相当或更高.
- 泡复合材料的密度低 (33.164.9 kg/m3) 和导热率低 (0.0390.049 W/mk).
结论:
- 用纸板增强的粉结合纤维素纤维泡是EPS泡包装的一个有希望的可生物降解的替代品.
- 这些复合材料提供了可调节的绝缘,机械强度和生物降解性的平衡.
- 开发的材料与现有的纸张回收流相兼容,提高了它们的环境可行性.
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