PA6/PPS基激光直接成型材料的制备与性能  

Preparation and properties of laser direct structuring materials based on PA6/PPS

作　　者：于志省[1] 李应成[1] 白瑜[1] 王洪学 YU Zhixing;LI Yingcheng;BAI Yu;WANG Hongxue(R&D Division for Synthetic Polymers,Sinopec Shanghai Research Institute of Petrochemical Technology,Shanghai 20120&China)

机构地区：[1]中国石油化工股份有限公司上海石油化工研究院合成材料研究所,上海201208

出　　处：《精细化工》2022年第4期706-711,共6页Fine Chemicals

基　　金：中国石油化工股份有限公司资助项目(218024-9)。

摘　　要：以聚酰胺6(PA6)、聚苯硫醚(PPS)及其复合材料为基材制备了系列激光直接成型(LDS)材料LDS-PA6、LDS-PPS、LDS-PA6/PPS以及长玻璃纤维(LGF)增强LDS材料LDS-PA6/PPS/LGF。采用TGA、热变形测定仪、摆锤冲击仪和材料试验机评价了材料的性能;采用光学显微镜、SEM、百格测试、盐雾实验考察了激光活化区域、化学镀层形貌及其可靠性。结果表明,LDS-PA6/PPS的热性能、耐吸水性、弯曲强度及模量均介于LDS-PPS和LDS-PA6之间,LGF的引入可使LDS-PA6/PPS的初始热分解温度提高20℃,热变形温度、弯曲模量相比LDS-PA6/PPS分别提升62%、102%。提高激光能量和频率、降低扫描速度、缩小涂色间距可以增强激光脉冲叠加作用,并有效粗化材料表面,有利于后续选择性化学镀过程中铜粒子的附着、沉积。优选的激光活化工艺条件为:能量10W、频率70kHz、扫描速度2500mm/s、涂色间距25μm。LDS材料铜镀层镀铜颗粒均匀,粒径约为40μm,镀层表面平整,与基体之间粘结力高,电阻<1.0Ω,导电性能优良。A series of laser direct structuring(LDS) materials including LDS-PA6, LDS-PPS,LDS-PA6/PPS, and long glass fiber(LGF) reinforced LDS material(LDS-PA6/PPS/LGF) were prepared based on polyamide 6(PA6), polyphenylene sulfide(PPS) and their composites. The properties of the materials were characterized by TGA, thermal deformation tester, pendulum impact tester and material testing machine. The morphologies of regions after laser activation and layers after selective plating, and the reliability of plating layer were evaluated by optical microscope, SEM, crosscut tape and salt spray test.The results revealed that the thermal properties, water absorption resistance, flexural strength and modulus of LDS-PA6/PPS were between those of LDS-PPS and LDS-PA6. The introduction of LGF made the initial thermal decomposition temperature of LDS-PA6/PPS increased by 20 ℃. While the heat deflection temperature and flexural modulus of LDS-PA6/PPS/LGF were improved by 62% and 102% compared with those of LDS-PA6/PPS, respectively. It was found that increasing the laser energy and frequency,decreasing the scanning speed and hatch distance could enhance the superposition of laser pulse and effectively coarsen the surface of materials, which eventually contributed to the adhesion and deposition of copper particles during the subsequent selective plating process. The optimum laser activation process conditions were as follows: laser energy of 10 W, frequency of 70 kHz, scanning speed of 2500 mm/s and hatch distance of 25 μm. The copper coating of the LDS materials had uniform copper particles(particle size of approximately 40 μm), smooth surface and excellent electrical conductivity, the adhesion between the coating and the substrate was high, the resistance was less than 1.0 Ω.

关 键 词：激光直接成型 聚酰胺6 聚苯硫醚 激光活化 选择性化学镀 功能材料 

分 类 号：TQ327.8[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]