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《工程塑料应用》 2021年第08期
DOI:10.3969/j.issn.1001-3539.2021.08.009
连续玻纤增强聚丙烯正交单向层合板热冲压成形工艺
郭巍1234,赵丰124,毛华杰35,闫宏旭35,邓景文35
1.武汉理工大学现代汽车零部件技术湖北省重点实验室,武汉 430070; 2.武汉理工大学汽车零部件技术湖北省协同创新中心,武汉 430070; 3.武汉理工大学先进材料制造装备与技术研究院,武汉 430070; 4.武汉理工大学汽车工程学院,武汉 430070; 5.武汉理工大学材料科学与工程学院,武汉 430070 
Hot Stamping Forming Process of Continuous Glass Fiber Reinforced Polypropylene Orthogonal Unidirectional Laminate
Guo Wei1234, Zhao Feng124, Mao Huajie35, Yan Hongxu35, Deng Jingwen35
1. Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan 430070, China; 2. Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan University of Technology, Wuhan 430070, China; 3. Institute of Advanced Materials and Manufacturing Technology, Wuhan University of Technology, Wuhan 430070, China; 4. School of Automotive Engineering, Wuhan University of Technology, Wuhan 430070, China; 5. School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China 
摘要:利用自行设计的带有加热系统的半球模具在不同的成形工艺参数下对连续玻璃纤维增强聚丙烯复合材料单向层合板进行热冲压成形实验,使用光学显微镜对实验制件的成形质量进行分析。结果表明,提高预热温度可以降低树脂黏度,从而降低成形所需冲压力,提高冲压速度增大了成形所需冲压力。在相同的冲压速度下,预热200℃时,所得制件的厚度差最小。在相同的预热温度下,当冲压速度小于200 mm/min时,随着冲压速度的增大,所得制件的厚度差值逐渐减小。冲压过程中树脂流动不平衡往往伴随着制件的成形缺陷。本实验条件下,预热温度200℃,冲压速度150 mm/min时,可得到较好成形质量的制件。 
Abstract:The hot stamping forming experiments of continuous glass fiber reinforced polypropylene orthogonal unidirectional laminates were carried out by using a self-designed hemispherical mould with heating system under different forming process parameters. The optical microscope was used to analyze the forming quality of experimental parts. The results show that increasing the preheating temperature can reduce the viscosity of the resin, thereby reducing the stamping force required for forming. Increasing the stamping speed can increase the stamping force required for forming. At the same stamping speed, the thickness difference of the forming part is the smallest when the part is preheated at 200℃. At the same preheating temperature, when the stamping speed is less than 200 mm/min, as the stamping speed increases, the thickness difference of the obtained parts gradually decreases. The unbalanced resin flow in the stamping process of the part is often accompanied by its forming defects. Under the experimental conditions, when the preheating temperature is about 200℃ and the stamping speed is about 150 mm/min, the forming quality of the parts is better. 
关键词:连续玻璃纤维增强热塑性复合材料;热冲压成形;半球模具;冲压速度 
Keywords:continuous glass fiber reinforced thermoplastic composite; hot stamping; hemispherical mould; stamping speed 
基金:国家自然科学基金青年基金项目(51605356),111项目(B17034),教育部创新团队发展计划(IRT_17R83),中央大学基础研究基金(WUT:2019III112CG),国家重点研发计划项目(2018YFB1106700) 
本文引用格式:
郭巍,赵丰,毛华杰,等.连续玻纤增强聚丙烯正交单向层合板热冲压成形工艺[J].工程塑料应用,2021,49(8):47-53.
Guo Wei,Zhao Feng,Mao Huajie,et al. Hot Stamping forming process of continuous glass fiber reinforced polypropylene orthogonal unidirectional laminate[J]. Engineering Plastics Application,2021,49(8):47-53. 

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