成核剂和PA66对可激光焊接PA6T/6I增强复合材料性能的影响
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摘要
采用双螺杆挤出机制备基于聚对苯二甲酰己二胺共聚物(PA6T/6I)的可激光焊接的增强复合材料,考察了成核剂及少量尼龙66 (PA66)对复合材料的激光透过性、热稳定性、力学和流动性能的影响。结果表明,成核剂使复合材料的透光率降低,而PA66可使复合材料的透光率显著提高;两者对复合材料的热稳定性及力学性能无明显影响; PA66可使材料的流动性得到提高。
The poly( terephthaloyl hexanediamine) based glass fiber reinforced composites for laser welding applications were prepared by twin-screw extruder and the influence of the nucleating agent and a small amount of PA66 on transmission properties, thermo stabilities, mechanical properties and flowing property of composites were studied. The results show that the nucleating agent could decrease the light transmittance of the composite and the small amount of PA66 could increase its light transmittance obviously.These two additives have slight influence on thermal and mechanical properties of the composite. PA66 could improve the flowability of composite.
The poly( terephthaloyl hexanediamine) based glass fiber reinforced composites for laser welding applications were prepared by twin-screw extruder and the influence of the nucleating agent and a small amount of PA66 on transmission properties, thermo stabilities, mechanical properties and flowing property of composites were studied. The results show that the nucleating agent could decrease the light transmittance of the composite and the small amount of PA66 could increase its light transmittance obviously.These two additives have slight influence on thermal and mechanical properties of the composite. PA66 could improve the flowability of composite.
引文
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[2]乔丹·罗泰泽尔.塑料连接技术:设计师和工程师手册[M].北京:化学工业出版社,2006.
[3]CHEN M,ZAK G,BATES P J.Effect of carbon black on light transmission in laser welding of thermoplastics[J].JMater Process Technol,2011,211(1):43-47.
[4]MAMUSCHKIN V,ROESNER A,ADEN M.Laser transmission welding of white thermoplastics with adapted wavelengths[J].Phys Procedia,2013,41:172-179.
[5]KAGAN V,BRAY R,CHAMBERS A.Forward to better understanding of optical characterization and development of colored polyamides for the infra-red/laser welding:Part I-efficiency of polyamides for infra-red welding[J].J Reinf Plast Compos,2003,22(7):593-602.
[6]KAGAN V A,BRAY R G,KUHN W P.Laser transmission welding of semi-crystalline thermoplastics-Part I:optical characterization of nylon based plastics[J].J Reinf Plast Compos,2002,21(12):1101-1122.
[7]刘辉,张敏敏,秦舒浩,等.POE和自制成核剂协同增透增韧PP的研究[J].塑料工业,2011,39(5):42-45.
[8]王小斌.尼龙6的增韧增透改性及性能研究[D].广州:华南理工大学,2016.
[9]彭治汉,施祖培.塑料工业手册:聚酰胺[M].北京:化学工业出版社,2001.
[10]MATSUNAGA T,SATO Y,GODA K.On a major cause of strength improvement in a ramie/PA composite with low fiber contents[J].Adv Ind Eng Polym Res,2018,1(1):93-98.
[11]KAGAN V A.Moisture effects on mechanical performance of laser-welded polyamide[J].J Reinf Plast Compos,2005,24(11):1213-1223.
[12]张传辉,麦堪成,曹民,等.高温尼龙研究进展[J].工程塑料应用,2012,40(11):95-100.