模内层压产品层间结合强度研究
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摘要
针对模内层压产品层压材料与塑料基材容易剥离脱落的问题,基于界面机械互锁理论和扩散理论,研究了模内层压产品层间界面的形成机理,分析了层间结合强度的主要影响因素。通过工艺实验和正交设计,分别研究了塑料基材和注射工艺参数对产品层间结合强度的影响规律。结果表明,塑料基材对产品层间结合强度有很大的影响,相对于聚碳酸酯(PC),PC/丙烯腈–丁二烯–苯乙烯塑料,聚丙烯作基材时与聚氯乙烯人造革的模内层压产品层间结合强度最高;注射工艺参数对产品层间结合强度影响程度的顺序为:料筒温度>注射压力>注射速度>模具温度,其中料筒温度和注射压力对层间结合强度的影响非常显著,注射速度和模具温度对层间结合强度的影响不明显。
In view of the problem that the laminate material and plastic substrate of the in-mold laminate are easy to peel off,based on the interface mechanical interlock theory and diffusion theory,the formation mechanism of the interlayer interface was studied,and the main influencing factors of the interlayer bonding strength were analyzed. Through the process experiment and orthogonal design,the effects of plastic substrate and injection process parameters on the bond strength between the layers were reasearched. The results showed that the plastic substrate has a great influence on the bond strength between the layers.When polypropylene was used as the substrate,the bonding strength between the layers of the in-mold laminated product of PVC artificial leather was the highest than PC and PC/acrylonitrile-butadiene-styrene plastic. And the injection process parameters also had different effects on the bond strength between the layers. The order of influence was :barrel temperature >injection pressure>injection speed >mold temperature,in which the influence of barrel temperature and injection pressure on interlayer bonding strength was very significant,but the influence of injection speed and mold temperature on interlayer bonding strength was not obvious.
In view of the problem that the laminate material and plastic substrate of the in-mold laminate are easy to peel off,based on the interface mechanical interlock theory and diffusion theory,the formation mechanism of the interlayer interface was studied,and the main influencing factors of the interlayer bonding strength were analyzed. Through the process experiment and orthogonal design,the effects of plastic substrate and injection process parameters on the bond strength between the layers were reasearched. The results showed that the plastic substrate has a great influence on the bond strength between the layers.When polypropylene was used as the substrate,the bonding strength between the layers of the in-mold laminated product of PVC artificial leather was the highest than PC and PC/acrylonitrile-butadiene-styrene plastic. And the injection process parameters also had different effects on the bond strength between the layers. The order of influence was :barrel temperature >injection pressure>injection speed >mold temperature,in which the influence of barrel temperature and injection pressure on interlayer bonding strength was very significant,but the influence of injection speed and mold temperature on interlayer bonding strength was not obvious.
引文
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[2]汪智勇,周华民,蔡考群,等.模内层压技术在汽车工业中的应用[J].模具制造,2010,10(10):52-56.Wang Zhiyong,Zhou Huamin,Cai Kaoqun,et al.Application of in-mold lamination technology in the automotive industry[J].Die&Mould Manufacture,2010,10(10):52-56.
[3]苏占伟,孟正华,王辉,等.装饰薄膜对模内嵌膜产品力学性能的影响规律[J].工程塑料应用,2018,46(10):51-56.Su Zhanwei,Meng Zhenghua,Wang Hui,et al.Effect of decorative film on mechanical properties of in-mold film products[J].Engineering Plastics Application,2018,46(10):51-56.
[4]赵维,齐暑华.硅丙树脂/丙烯酸柱撑LDH纳米复合材料界面研究[J].工程塑料应用,2013,41(6):29-32.Zhao Wei,Qi Shuhua.Study on interface of organosiliconacrylic resin/AA-LDHs nanocomposite[J].Engineering Plastics Application,2013,41(6):29-32.
[5]卢仁杰,韩冰,李锦春.GF增强PLA复合材料的界面设计及性能研究[J].工程塑料应用,2010,38(4):25-30.Lu Renjie,Han Bing,Li Jinchun.Design and reseacrh on interface of PLA/GF comoisite[J].Engineering Plastics Application,2010,38(4):25-30.
[6]程平,扈艳红,黄诚,等.碳纤维不同表面处理及其对聚三唑基复合材料界面性能的影响[J].工程塑料应用,2013,41(3):5-10.Cheng Ping,Hu Yanhong,Huang Cheng,et al.Different surface treatments of carbon fibers and their effects on interfacial performance of polytriazole composite[J].Engineering Plastics Application,2013,41(3):73-76.
[7]董超亮,王耀先,周洁鹏,等.芳纶纤维增强树脂基复合材料的界面粘结性能研究[J].工程塑料应用,2012,40(3):73-76.Dong Chaoliang,Wang Yaoxian,Zhou Jiepeng,et al.Interfacial bond property of aramid fibers reinforced polymer matrix composites[J].Engineering Plastics Application,2012,40(3):73-76.
[8]张志坚,陈绮丽,张婧婧,等.双物料注射成型试样界面粘接强度的测试[J].工程塑料应用,2012,40(12):85-88.Zhang Zhijian,Chen Qili,Zhang Jingjing,et al.Interfacial bond strength test of two-material injection molding sample[J].Engineering Plastics Application,2012,40(12):85-88.
[9]Xu L R,Sengupta S,Kuai H.An experimental and numerical investigation of adhesive bonding strengths of polymer materials[J].International Journal of Adhesion&Adhesives,2004,24(6):455-460.
[10]Needleman A,Rosakis A J.The effect of bond strength and loading rate on the conditions governing the attainment of intersonic crack growth along interfaces[J].Journal of the Mechanics&Physics of Solids,1999,47(12):2 411-2 449.
[11]Xu L R,Rosakis A J.Impact failure characteristics in sandwich structures.Part II:Effects of impact speed and interfacial strength[J].International Journal of Solids&Structures,2002,39(16):4 237-4 248.
[12]Green L W,Ottoson J M,García C,et al.Diffusion theory and knowledge dissemination,utilization,and integration in public health[J].Annual Review of Public Health,2014,30(30):151.
[13]Yamaguchi S,Leong Y W,Tsujii T,et al.Effect of crystallization and interface formation mechanism on mechanical properties of film-insert injection-molded poly(propylene)(PP)film/PP substrate[J].Journal of Applied Polymer Science,2010,98(1):294-301.
[14]Jin Y K,Kim S Y,Song Y S,et al.Relationship between the crystallization behavior and the warpage of film-insert-molded parts[M]/The origin and development of the differences between the leaderships of CPSU and ourselves.Beijing:Foreign Languages Press,2011:1 539-1 546.
[15]Wang Z Y,Yue C Y,Roy S.Strength development and diffusion in symmetric and asymmetric pairs of amorphous COCs in the vicinity of Tg:A new modified temperature-pressure dependent model[J].Polymer,2012,53(9):1 932-1 938.