不同发泡剂对微发泡PP复合材料发泡及表面质量的影响
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摘要
以化学发泡为主线,通过注塑成型技术制备不同发泡剂的微发泡聚丙烯(Polypropylene,PP)复合材料,研究了PP材料中添加AC母粒(Azodicarbonamide,AC)、AC粉和微球母粒3种不同发泡剂对微发泡PP材料发泡质量和表面质量的影响。结果表明:不同特性的发泡剂添加到PP材料中进行发泡后,对发泡质量有较明显的影响; PP材料中添加AC母粒发泡质量最好,泡孔平均直径较小,为35. 8μm,泡孔个数较多,泡孔尺寸分布均匀。表面质量也存在明显的影响,PP材料中添加微球母粒(Na HCO3母粒)后,表面无明显的气痕和凹坑,表面光泽度最大,表面质量较理想。综合发泡质量和表面质量的影响因素,微球母粒适合于微发泡聚丙烯制品的发泡。
The micro-foamed polypropylene( PP) composites with different foaming agents were prepared by chemical foam injection molding technology. The effects of different foaming agents on the foaming quality and surface quality of micro-foamed PP materials were studied. The results showed that the foaming agent with different characteristics had a significant effect on the foaming quality of microfoamed PP composites. The PP masterbatch had the best foaming quality and the average cell diameter with 35. 8 μm. The surface quality also had obvious influence by adding different foaming agents. Micro-foamed PP composites of adding the microsphere masterbatch were no obvious gas marks and pits on the surface. The surface gloss was the largest,and the surface quality was ideal. According to the factors affecting the foaming quality and surface quality,the microsphere masterbatch was suitable for micro-foamed polypropylene products.
The micro-foamed polypropylene( PP) composites with different foaming agents were prepared by chemical foam injection molding technology. The effects of different foaming agents on the foaming quality and surface quality of micro-foamed PP materials were studied. The results showed that the foaming agent with different characteristics had a significant effect on the foaming quality of microfoamed PP composites. The PP masterbatch had the best foaming quality and the average cell diameter with 35. 8 μm. The surface quality also had obvious influence by adding different foaming agents. Micro-foamed PP composites of adding the microsphere masterbatch were no obvious gas marks and pits on the surface. The surface gloss was the largest,and the surface quality was ideal. According to the factors affecting the foaming quality and surface quality,the microsphere masterbatch was suitable for micro-foamed polypropylene products.
引文
[1]ZHOU Y H,GONG W,HE L.Application of a novel organic nucleating agent:Cucurbit[6]uril to improve polypropylene injection foaming behavior and their physical properties[J].Journal of Applied Polymer Science,2017,135(1):24538-24546.
[2]GONG W,YU J,FU Hu,et al.Strengthening and toughening mechanisms for polypropylene/glass fiber composite foams under three-phase coexistence[J].Polimery,2015,60(7-8):457-461.
[3]CHA S W,YOON J D.The relationship of mold temperatures and swirl marks on the surface of microcellular plastics[J].Polymer-Plastics Technology and Engineering,2005,44(5):795-803.
[4]ZHANG L,ZHAO G,DONG G,et al.Bubble morphological evolution and surface defect formation mechanism in the microcellular foam injection molding process[J].RSCAdvances,2015,5(86):70032-70050.
[5]CHEN S C,LIAO W H,CHIEN R D.Structure and mechanical properties of polystyrene foams made through microcellular injection molding via control mechanisms of gas counter pressure and mold temperature[J].International Communications in Heat&Mass Transfer,2012,39(8):1125-1131.
[6]CHEN S C,HSU P S,LIN Y W.Establishment of gas counter pressure technology and its application to improve the surface quality of microcellular injection molded parts[J].International Polymer Processing Journal of the Polymer Processing Society,2011,26(3):275-282.
[7]CHEN S C,HSU P S,HWANG S S.The effects of gas counter pressure and mold temperature variation on the surface quality and morphology of the microcellular polystyrene foams[J].Journal of Applied Polymer Science,2013,127(6):4769-4776.
[8]SHAAYEGAN V.A new insight into foaming mechanisms in injection molding via a novel visualization mold[J].Express Polymer Letters,2016,10(6):462-469.
[9]WANG G,ZHAO G,WANG X.Experimental research on the effects of cavity surface temperature on surface appearance properties of the moulded part in rapid heat cycle moulding process[J].The International Journal of Advanced Manufacturing Technology,2013,68(5):1293-1310.
[10]CHEN S C,LIN Y W,CHIEN R D,et al.Variable mold temperature to improve surface quality of microcellular injection molded parts using induction heating technology[J].Advances in Polymer Technology,2010,27(4):224-232.
[11]LEE J,TURNG L.Improving surface quality of microcellular injection molded parts through mold surface temperature manipulation with thin film insulation[J].Polymer Engineering&Science,2010,50(7):1281-1289.
[12]PENG J,TURNG L S,PENG X F.A new microcellular injection molding process for polycarbonate using water as the physical blowing agent[J].Polymer Engineering&Science,2012,52(7):1464-1473.
[13]王昌银,段焕德,张纯,等.纤维对微发泡聚丙烯复合材料发泡行为的影响[J].高分子材料科学与工程,2016,32(1):131-136.
[14]梅泽敏,何力,王伟,等.PP材料发泡行为及表面质量[J].工程塑料应用,2017,45(4):59-63.
[15]陈晓松,高炜斌,刘日鑫,等.可膨胀微球发泡剂制备EP-DM海绵的研究[J].橡胶工业,2011,58(2):101-104.
[2]GONG W,YU J,FU Hu,et al.Strengthening and toughening mechanisms for polypropylene/glass fiber composite foams under three-phase coexistence[J].Polimery,2015,60(7-8):457-461.
[3]CHA S W,YOON J D.The relationship of mold temperatures and swirl marks on the surface of microcellular plastics[J].Polymer-Plastics Technology and Engineering,2005,44(5):795-803.
[4]ZHANG L,ZHAO G,DONG G,et al.Bubble morphological evolution and surface defect formation mechanism in the microcellular foam injection molding process[J].RSCAdvances,2015,5(86):70032-70050.
[5]CHEN S C,LIAO W H,CHIEN R D.Structure and mechanical properties of polystyrene foams made through microcellular injection molding via control mechanisms of gas counter pressure and mold temperature[J].International Communications in Heat&Mass Transfer,2012,39(8):1125-1131.
[6]CHEN S C,HSU P S,LIN Y W.Establishment of gas counter pressure technology and its application to improve the surface quality of microcellular injection molded parts[J].International Polymer Processing Journal of the Polymer Processing Society,2011,26(3):275-282.
[7]CHEN S C,HSU P S,HWANG S S.The effects of gas counter pressure and mold temperature variation on the surface quality and morphology of the microcellular polystyrene foams[J].Journal of Applied Polymer Science,2013,127(6):4769-4776.
[8]SHAAYEGAN V.A new insight into foaming mechanisms in injection molding via a novel visualization mold[J].Express Polymer Letters,2016,10(6):462-469.
[9]WANG G,ZHAO G,WANG X.Experimental research on the effects of cavity surface temperature on surface appearance properties of the moulded part in rapid heat cycle moulding process[J].The International Journal of Advanced Manufacturing Technology,2013,68(5):1293-1310.
[10]CHEN S C,LIN Y W,CHIEN R D,et al.Variable mold temperature to improve surface quality of microcellular injection molded parts using induction heating technology[J].Advances in Polymer Technology,2010,27(4):224-232.
[11]LEE J,TURNG L.Improving surface quality of microcellular injection molded parts through mold surface temperature manipulation with thin film insulation[J].Polymer Engineering&Science,2010,50(7):1281-1289.
[12]PENG J,TURNG L S,PENG X F.A new microcellular injection molding process for polycarbonate using water as the physical blowing agent[J].Polymer Engineering&Science,2012,52(7):1464-1473.
[13]王昌银,段焕德,张纯,等.纤维对微发泡聚丙烯复合材料发泡行为的影响[J].高分子材料科学与工程,2016,32(1):131-136.
[14]梅泽敏,何力,王伟,等.PP材料发泡行为及表面质量[J].工程塑料应用,2017,45(4):59-63.
[15]陈晓松,高炜斌,刘日鑫,等.可膨胀微球发泡剂制备EP-DM海绵的研究[J].橡胶工业,2011,58(2):101-104.
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