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相关概念视频

Bioplastics01:27

Bioplastics

70
Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
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关于用于基于FDM的加工过程的 pistachio shell填充的PLA复合材料的研究.

S Rashia Begum1, B Aditya Devan1, S Kavya1

  • 1Department of Mechanical Engineering, College of Engineering, Anna University, Guindy, Chennai, 600025, Tamilnadu, India.

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这项研究开发了用于3D打印的聚乳酸 (PLA) /豆颗粒 (PSP) 复合材料. 4wt%的复合材料显示出最佳的机械性能平衡和增强的可加工性.

关键词:
通过3D打印打印3D打印.接触角度的接触角度是什么发光线的发光线是非常重要的.这就是为什么PLA PLA PLA.皮斯塔奇 (Pistachio) 是一个品种.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 聚合物科学 聚合物科学
  • 添加剂制造 添加剂制造 添加剂制造

背景情况:

  • 开发用于化沉积建模 (FDM) 的可持续复合纤维对于环保增材制造至关重要.
  • 聚乳酸 (PLA) 是一种流行的生物降解聚合物,但其机械性能可以通过天然填充剂来增强.
  • 豆颗粒 (PSP) 提供了一个潜在的低成本,可再生的填充剂来源.

研究的目的:

  • 开发和表征聚乳酸 (PLA) / 核桃颗粒 (PSP) 复合纤维用于沉积建模 (FDM).
  • 调查和西兰处理对PSP的影响及其对PLA矩阵的影响.
  • 优化PSP内容以提高机械性能,可处理性和整体性能.

主要方法:

  • 复合纤维使用单螺丝挤出机制造复合纤维.
  • pistachio 贝颗粒经过和处理以改善填充剂-矩阵粘附.
  • 福利埃变换红外光谱 (FTIR),X射线衍射 (XRD),扫描电子显微镜 (SEM) 和机械测试被采用.

主要成果:

  • 化学处理改变了PSP的表面,去除了木质素/血纤,形成了西洛键.
  • 虽然拉力,压力和强度略有下降,但拉力模量和矩阵刚度有所改善.
  • 4wt%的PSP复合材料表现出最高的抗拉强度 (49.81MPa) 和融化流量指数 (12.80g/10分钟),表明最佳的分散性和可加工性.
  • 由于填料负载较高,6%的复合材料显示出最大的压力 (43.06 MPa) 和屈曲强度 (58.06 MPa).
  • 硬度和抗冲击能力随PSP含量增加,但湿度下降.

结论:

  • 和西兰处理有效地提高了PSP和PLA矩阵之间的兼容性.
  • 4%重%的PLA/PSP复合材料为FDM应用提供了机械性能和优越加工能力的有希望的平衡.
  • 使用经过处理的核桃树颗粒为创建可持续和功能性的复合材料提供了一个可行的途径.