聚乙烯硫化基基组合物与固体填充剂用于粉末注塑成型
Dmitry V Dudka1, Azamat L Slonov2, Khasan V Musov2
1A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences (TIPS RAS), 29 Leninsky Prospekt, 119991 Moscow, Russia.
Polymers
|February 13, 2026
概括
这项研究表明,使用优化的低密度聚乙烯 (LDPE) 结合剂,对聚乙烯硫化物 (PPS) 进行粉末注塑 (PIM) 的可行性. 碳纤维增强显著提高了PIM加工的PPS组件的机械性能.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物工程 聚合物工程
- 制造业 制造技术 制造技术
背景情况:
- 粉末注塑 (PIM) 已在金属和陶方面建立,但在高性能热塑性塑料方面未得到充分利用.
- 聚乙烯硫化物 (PPS) 是一种有前途的线性芳香聚合物,适用于粉末制造.
- 开发合适的PIM原料对于扩大PPS应用至关重要.
研究的目的:
- 调查使用粉末注塑成型 (PIM) 制造聚乙烯硫化物 (PPS) 组件的可行性.
- 开发和优化基于聚乙烯 (PE) 的原料,包括PPS和各种固体填充剂.
- 评估不同填充剂对PPS PIM原料的气质和机械性能的影响.
主要方法:
- 基于PE的结合剂的配方,低密度聚乙烯 (LDPE) 和的比例各不相同.
- 将聚乙烯硫化物 (PPS) 粉末和固体填充剂 (灰,石膏,碳纤维) 纳入粘合剂系统.
- 风学分析用于评估复杂几何形状的原料可加工性.
- 优化烧结条件,以实现所需的机械性能.
- 机械性能的表征,包括弹性模量和屈曲强度.
主要成果:
- 经过修改的LDPE/抛粘合剂系统 (70:30重量%) 使PPS负载显著增加到50重量%,确保稳定的成型.
- 风学分析证实了开发的复合材料原料对复杂形状的可加工性.
- 确定了最佳的烧结条件,以满足机械性能要求.
- 碳纤维增强导致弹性模量增加33%,曲强度增加20%.
结论:
- 粉末注塑成型 (PIM) 是一种可行的技术,用于从聚乙烯硫化物 (PPS) 制造组件.
- 可实现具有高PPS含量的优化PE基原料,从而实现稳定的成型工艺.
- 碳纤维提供了有效的强化,显著提高了PIM加工的PPS复合材料的机械性能.
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