【成功案例】更轻更有效的无线电通信设备屏蔽方案——新型导电塑料注塑外壳替代传统金属外壳
美国PARKER CHOMERICS(派克固美丽)公司是全球领先的屏蔽材料供应商之一,该公司历史悠久、技术领先,提供的新型产品在市场中取得了巨大的成功。本文介绍的就是一个该公司生产的新型导电塑料替代金属冲压外壳的应用实例,是一种更轻、更有效的外壳屏蔽解决方案。
图1 导电塑料注塑外壳的实物图
该项目是由一家无线电通信设备制造商提出的,主要目的是希望寻求一种轻型的金属外壳替代方案,并且能够降低维护难度。当然,基本的EMI屏蔽性能仍需要保证,要求在PCB和显示屏之间做到40dB以上屏蔽效能(频率小于1.9GHz)。另外,还要求成本尽量低,订购周期尽量短。
派克固美丽在充分考虑了客户的需求后,推荐了PREMIERTM A240-HTHF导电塑料作为解决方案,采用注塑工艺制作屏蔽外壳,实物如图1中所示。A240型属于高性能导电塑料系列,屏蔽效能超过了85dB,远高于客户要求的40dB。HTHF指的是耐高温和混合填料,最高适用温度85℃,填料为镀镍石墨粉和镀镍碳纤维混合型,能够进一步增强电气性能。
图2 导电塑料颗粒和注塑外壳
从工艺角度看,导电塑料可以采用注塑工艺,一次成型,与金属件相比,不需要机加工、电镀、喷漆、镀膜等等复杂的二次工艺,可以节省50%左右的工艺成本。而且,塑料注塑外壳在结构设计上,也比金属件更加简单方便,能够实现很多金属件做不到的结构。
派克固美丽在这个项目上的解决方案,可以说是非常成功的。PREMIERTM A240-HTHF导电塑料制成的外壳产品,不仅在性能上远高于客户要求,在价格方面也远远低于客户的预期价格。这说明,在电磁屏蔽材料的领域中,派克固美丽公司的优势,是全面领先于竞争对手的,也是超过客户预期的。
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描述- Parker is the global leader in motion and control technologies, providing precision-engineered solutions for a wide variety of mobile, industrial and aerospace markets. Parker can be found on and around everything that moves.
型号- CHO-SHIELD 571,52-01-2001-0000,50-30-0584-0029,CHO-LUBE 4220,52-01-0571-0000,50-10-1086-0000,52-03-2056-0000,CHO-BOND 2165,CHO-SHIELD 608,CHO-BOND 1077,596,52-00-2002-0000,52-00-2003-0000,51-02-4669-0000,50-33-1038-0000,50-01-0584-0208,50-00-1091-0000,CHO-SHIELD 604,72-00002,72-00005,CHO-BOND 1075,52-03-2044-0000,50-05-0580-0208,50-02-1030-1000,4220,50-01-1030-0000,2044,2040,52-01-2002-0000,50-00-0584-0208,52-00-2001-0000,54-01-4220-0000,CHO-SHIELD 4994,CHO-SHIELD 2056,CHO-SHIELD 596,50-01-2165-0000,2056,52-01-0579-0000,50-01-1085-0000,52-01-0604-0000,50-04-2165-0000,52-01-0596-0000,52-04-4994-1000,52-03-0610-0000,CHO-SHIELD 2044,50-01-1075-0000,50-10-0584-0029,52-00-2002-1000,50-02-1038-0000,CHO-SHIELD 4900,50-02-1075-1000,50-00-1029-0000,50-01-1091-0000,CHO-SHIELD 2040,CHO-SHIELD 579,4994,50-00-0584-0029,CHO-SHIELD 610,CHO-SHIELD 576,72-08116,CHO-BOND 584-208,52-04-2002-0000,CHO-BOND 580-208,CHO-BOND 360-20,CHO-BOND 1029,52-01-0576-0000,CHO-LUBE E117,50-02-1038-1000,50-01-0580-0208,CHO-BOND 1035,52-04-0608-0000,51-05-4669-0000,TECKNIT 8116,50-03-0584-0029,50-02-1077-0000,CHO-BOND 4669,CHO-BOND 1038,52-04-2001-0000,50-02-1016-0000,CHO-BOND 1030,52-00-2001-1000,CHO-BOND 4660,51-00-1035-0000,2001,CHO-BOND 1019,50-00-0360-0020,50-02-0584-0029,52-03-4994-1000,50-01-1121-0000,52-00-2003-1000,604,CHO-SHIELD 1091,608,50-02-1075-0000,50-31-1038-0000,TECKNIT 0005,51-01-1035-000,TECKNIT 0002,50-04-1086-0000,50-01-1077-0000,50-01-1029-0000,51-02-4660-0000,50-02-1030-0000,571,51-05-4660-0000,576,610,CHO-BOND 1016,2003,50-01-1038-0000,54-01-E117-0200,2002,51-00-1035-1000,50-01-0584-0029,50-02-2165-0000,CHO-SHIELD 2002,52-00-0596-0000,CHO-SHIELD 2003,54-02-4220-0000,CHO-SHIELD 2001,50-01-1019-0000,52-01-2003-0000,50-01-1016-0000,CHO-BOND 1121,50-01-0360-0020,52-03-2040-0000,52-04-2003-0000,50-01-1086-0000,52-02-4900-0000,CHO-BOND 584-29,CHO-BOND 1085,CHO-BOND 1086
PREMIER™ PBT-250-FR ELECTRICALLY CONDUCTIVE FLAME RETARDANT (FR) POLYBUTYLENE TEREPHTHALATE (PBT) PLASTIC
型号- PBT-250-FR,PREMIER™ PBT-250-FR,PREMIER PBT-250-FR
【经验】电动汽车电池性能最大化的五种方法
只有选择经过验证,可靠,高质量的产品才能实现电动汽车电池的有效热管理和EMI屏蔽,才能最大限度地提高性能。本文针对电动汽车电池热管理和EMI保护,推荐Parker Chomerics旗下EMI屏蔽材料方案。
设计经验 发布时间 : 2019-03-31
Key Facts About Parker FY2019
型号- CHO-FORM 5550,SOFT SHIELD 4850,CHO-FORM 5552,CHO-BOND® 584-29,THERM-A-GAP GEL,CHO-FORM 5538,CHO-MUTE 9025,CHO-MUTE 9005,SOFT-SHIELD 3700,SOFT-SHIELD 4800,CHO-BOND® 1075,CHO-BOND® 580-208,SOFT-SHIELD 4850,CHO-FORM® 5528,CHO-SEAL 2557,CHO-SEAL 2532,SOFT-SHIELD 3500,CHO-BOND® 1038,CHO-SEAL 2542
【选型】固美丽热固化有机硅系统导电胶用于ADAS屏蔽,屏蔽效能65db以上,性能和成本兼顾
ADAS里目前最有效的方案是金属外壳缝隙之间点胶,实现整体连通屏蔽,防止其他外部信号干扰,FIP导电胶的好处是省去模具费用,针对不同公差的外壳可以起到很好的弥补公差的作用具有很高的工艺灵活性。Parker chomerics(固美丽)的CHOFORM 5550是单组分,热固化有机硅系统导电胶,需要在150°℃(302℉)下至少固化30分钟。
器件选型 发布时间 : 2023-05-29
电子商城
服务
加工尺寸范围2~15英寸,产品有效加工尺寸:半断加工:2MM*600MM*900MM;全断加工:30MM*1600MM*2500MM;
最小起订量: 1000pcs 提交需求>
使用FloTHERM和Smart CFD软件,提供前期热仿真模拟、结构设计调整建议、中期样品测试和后期生产供应的一站式服务,热仿真技术团队专业指导。
实验室地址: 深圳 提交需求>
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