Study on non⁃isothermal stretch forming quality of continuous glass⁃fiber⁃reinforced polypropylene laminates

doi:10.19491/j.issn.1001-9278.2021.12.010

Abstract

Abstract:

A self?designed mold was used to conduct hemispherical non?isothermal deep drawing tests for the double?layer glass?fiber?reinforced polypropylene composite unidirectional laminates. The effects of preheating temperature and drawing speed of composite unidirectional laminates on the thickness distribution and forming quality of the part were investigated through microscopic observation and other methods. The results indicated that an increase in preheating temperature resulted in the formation of the thinner laminates. The surface quality of the laminates was improved with an increase in drawing speed. The laminates presented cracks and delamination defects with a drawing speed of over 150 mm/min.

Key words: glass fiber, polypropylene, composite, laminate, hemisphere, non?isothermal deep drawing, drawing rate

CLC Number:

TQ325.1⁺4

LIU Xiaorui, ZHAO Feng, WANG Xiumei, GUO Wei, MAO Huajie, YAN Hongxu, DENG Jingwen. Study on non⁃isothermal stretch forming quality of continuous glass⁃fiber⁃reinforced polypropylene laminates[J]. China Plastics, 2021, 35(12): 58-62.

Figures/Tables 6

Fig.1. The main equipment of the experiment

Fig.2. Schematic diagram of stamping

Fig.3. Schematic diagram of the position of the thickness measurement point

Fig.4. Thickness distribution of the part and the difference of the maximum thickness of the part under different conditions

Fig.5. Topography of molded parts

Fig.6. Different defects of the molded parts

References 13

1	刘万双，魏毅，余木火.汽车轻量化用碳纤维复合材料国内外应用现状［J］.纺织导报，2016（5）：48⁃52.
	LIU W S，WEI Y，YU M H.Current situations of carbon fiber reinforced composites used for lightweighting of automobile at home and abroad［J］. China Textile Leader，2016（5）：48⁃52.
2	BUSSETTA P， CORREIA N. Numerical forming of continuous fibre reinforced composite material： A review［J］. Composites，Part A， 2018， 113：12⁃31.
3	YAO X M，GAO X Y，JIANG J J，et al. Comparison of carbon nanotubes and graphene oxide coated carbon fiber for improving the interfacial properties of carbon fiber/epoxy composites［J］. Composites，Part B， 2018，132：170⁃177.
4	刘荣杰. GFRTP板材制备及其成型性能研究［D］.秦皇岛：燕山大学，2017.
5	杨铨铨，梁基照.连续纤维增强热塑性复合材料的制备与成型［J］.塑料科技，2007（6）：34⁃40.
	YANG Q Q，LIANG J Z. Preparation and forming of continuous fiber reinforced thermoplastic plastics composites［J］. Plastics Science and Technology，2007（6）：34⁃40.
6	马宁，申国哲，张宗华，等. 高强度钢板热冲压材料性能研究及在车身设计中的应用［J］.机械工程学报，2008，44（8）：60⁃65.
	MA N，SHENG G Z，ZHANG Z H，et al. Material performance of hot⁃forming high strength steel and its application in vehicle body［J］. Journal of Mechanical Engineering，2008，44（8）：60⁃65.
7	张琦，高强，赵升吨.碳纤维复合材料板热冲压成形试验研究［J］.机械工程学报，2012，48（18）：72⁃77.
	ZHANG Q，GAO Q，ZHAO S D. Thermostamping experimental study on carbon fiber composite sheet［J］. Journal of Mechanical Engineering， 2012，48（18）：72⁃77.
8	尹红灵.热塑性碳纤维编织复合材料热压成型研究［D］.上海：上海交通大学，2016.
9	韩宾，王宏，于杨惠文，等.碳纤维增强热塑性复合材料盒形件热冲压成型研究［J］.航空制造技术，2017（16）：40⁃45.
	HAN B，WANG H，YU Y H W，et al. Hot Stamping of carbon fiber⁃reinforced thermoplastic composite boxes［J］. Aeronautical Manufacturing Technology，2017（16）：40⁃45.
10	HOU M， FRIEDRICH K. Adjustable forming of thermoplastic composites for orthopaedic applications［J］. J Mater Sci Mater Med， 1998， 9（2）：83⁃88.
11	TRUDE⁃BOUCHER D， FISA B， DENAULT J，et al. Experimental investigation of stamp forming of unconsolidated commingled e⁃glass/polypropylene fabrics［J］. Composites Science and Technology， 2006， 66（3/4）：555⁃570.
12	LEE J S， HONG S J， YU W R，et al. The effect of blank holder force on the stamp forming behavior of non⁃crimp fabric with a chain stitch［J］. Composites Science and Technology， 2007， 67（3/4）：357⁃366.
13	CHEN Q， BOISSE P， PARK C H，et al. Intra/inter⁃ply shear behaviors of continuous fiber reinforced thermoplastic composites in thermoforming processes［J］. Composite Structures， 2011， 93（7）：1 692⁃1 703.

[1]	WU Wei, HU Huanbo, SHEN Hui, ZHAO Tianyu. Dual⁃synergistic effect of 4A zeolite and Ca⁃Mg⁃Al hydrotalcite on intumescent flame retardant PP and its mechanism [J]. China Plastics, 2022, 36(7): 1-7.
[2]	YU Changyong, XIN Zhong. Effect of α/β complex nucleating agent based on hexahydrophthalate on properties of polypropylene [J]. China Plastics, 2022, 36(7): 121-128.
[3]	SONG Yinbao, YANG Jianjun, LI Chuanmin. Study on properties and manufacturing precision of PDMS/SiC functionally gradient composites [J]. China Plastics, 2022, 36(7): 30-36.
[4]	LIU Yi, SUN Wei, QU Guoxing, WANG Ye, YUAN Ning, YANG Shaolin, XU Xia, CHANG Xiaoyi, ZHANG Yufei. Structure and performance analysis of transparent polypropylene special material for thin⁃wall injection molding [J]. China Plastics, 2022, 36(7): 37-43.
[5]	YANG Xiaolong, CHEN Wenjing, LI Yongqing, YAN Xiaokun, WANG Xiulei, XIE Pengcheng, MA Xiuqing. Research progress in polymer/graphene conductive composites [J]. China Plastics, 2022, 36(6): 165-173.
[6]	SUN Wei, LIU Yi, LIAO Yunlong, CHEN Junjia. Study on influence factors for determination of ethylene content in polypropylene powder [J]. China Plastics, 2022, 36(6): 54-59.
[7]	WANG Ke, LONG Chunguang. Mechanical and tribological properties of ultra⁃high molecular weight polyethylene/sepiolite fiber composites [J]. China Plastics, 2022, 36(5): 19-23.
[8]	CHEN Sheng, LIANG Yingchao, WU Fangjuan, FANG Hui, FAN Xinfeng, CHEN Hui, WANG Yonggang. Preparation and interfacial modification of polyamide 6/bidirectional warp⁃knitted glass fiber composites [J]. China Plastics, 2022, 36(5): 24-28.
[9]	HE Hezhi, XU Li, YANG Yike. Effect of prestress on mechanical properties of PC/CF laminates [J]. China Plastics, 2022, 36(4): 1-5.
[10]	LIU Wen, SHI Wenzhao, LIU Jinshu, LU Shaofeng, ZHOU Hongjuan. Research progress in electro⁃active shape memory composite materials [J]. China Plastics, 2022, 36(4): 175-189.
[11]	RUAN Fangtao, XIA Chenglong, ZHANG Baogen, CAO Ye, LIU Zhi, XU Zhenzhen, ZHANG Jincao. Axial compressive properties of aramid⁃coated carbon⁃fiber⁃reinforced epoxy resins [J]. China Plastics, 2022, 36(4): 19-23.
[12]	PENG Bo, XIAO Yunbin, GU Jiabao, CHEN Zijun, TANG Yanhuang, ZHU Gang, XU Huanxiang. Research progress in preparation and properties of polymer/graphene composites [J]. China Plastics, 2022, 36(4): 190-197.
[13]	WANG Qingsong. Development of glass⁃fiber⁃reinforced polypropylene with high strength and low VOC [J]. China Plastics, 2022, 36(4): 30-34.
[14]	SONG Lijian, ZHANG Youchen, ZUO Xiahua, ZHANG Zhenghe, AN Ying, YANG Weimin, TAN Jing, CHENG Lisheng. Research progress on interfacial thermal transport controlled by self⁃assembled monolayers [J]. China Plastics, 2022, 36(4): 60-69.
[15]	HE Yi, ZHAO Guanghui. Research progress in repairing and reinforcement of oil and gas pipeline with composites [J]. China Plastics, 2022, 36(4): 70-82.