中国塑料 ›› 2025, Vol. 39 ›› Issue (12): 51-55.DOI: 10.19491/j.issn.1001-9278.2025.12.009

• 材料与性能 • 上一篇    下一篇

车用再生聚酰胺6开发与应用

董国超1(), 徐亮2, 黄艳灵1, 吕玲芳1, 陈世盛1, 杜慧2, 刘涛2   

  1. 1.浙江吉利远程新能源商用车集团有限公司,杭州 311228
    2.南京聚隆科技股份有限公司,南京 210061
  • 收稿日期:2024-12-27 出版日期:2025-12-26 发布日期:2025-12-22
  • 作者简介:董国超(1987-),男,工程师/硕士,从事车用材料研究与开发,Guochao.Dong@geely.com

Development and application of recycled polyamide 6 for automotive components

DONG Guochao1(), XU Liang2, HUANG Yanling1, LYU Lingfang1, CHEN Shisheng1, DU Hui2, LIU Tao2   

  1. 1.Zhejiang Geely Farizon New Energy Commercial Vehicle Groud Co Ltd,Hangzhou 311228,China
    2.Nanjing Julong Science and Technology Co Ltd,Nanjing 210061,China
  • Received:2024-12-27 Online:2025-12-26 Published:2025-12-22

摘要:

在新料聚酰胺(VPA6)中加入一定比例的消费后聚酰胺(PCR⁃PA6),制得一系列不同再生含量的聚酰胺(PA6)改性材料,进而研究不同添加比例对材料拉伸、弯曲、冲击和热性能的影响规律。结果表明,随着再生比例的提高,再生材料各项相关性能呈现下降趋势;当PCR⁃PA6占比不超过20 %时(质量分数,下同),再生材料的强度和塑性保持率均在90 %以上,可以满足车用塑料技术要求;选用PCR⁃PA6占比为20 %的再生材料作为原材料,用于导流罩支架开发,经测试满足零件低温冲击、高低温交变、光老化等技术要求;通过7 500 km装车综合路试,外观和结构良好,满足使用寿命要求。

关键词: 汽车, 聚酰胺, 力学性能, 再生材料, 导流罩支架

Abstract:

In this study, a series of recycled polyamide 6 (PA6) materials was developed by blending virgin PA6 (V⁃PA6) with varying proportions of post⁃consumer recycled PA6 (PCR⁃PA6). The mechanical properties (tensile, flexural, impact) and thermal stability of the blends were systematically investigated as a function of the PCR⁃PA6 content. Results indicated a gradual decline in these properties with increasing PCR⁃PA6 loading. However, when the PCR⁃PA6 content was lower than 20 wt%, the blends retained more than 90 % of their strength and plasticity, meeting the performance criteria for automotive plastics. To validate practical application, a deflector bracket was successfully injection⁃molded using the 20 wt% PCR⁃PA6 formulation. The component passed critical automotive qualification tests, including low⁃temperature impact resistance, thermal cycling, and light aging. Furthermore, a 7 500 km loaded road test confirmed the bracket's durability, with no observable changes in appearance or structure, demonstrating a service life compatible with vehicle requirements.

Key words: automobile, polycaprolactam, mechanical property, recycled material, deflector bracket

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