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    • 13. 发明授权
    • Aqueous phase pore sealing agent imroving PCB coating oxidation-resistant and corrosion-resistant properties and method for using same
    • 水相孔密封剂可以使PCB涂层具有抗氧化和耐腐蚀性能和使用方法
    • US09441115B2
    • 2016-09-13
    • US14358026
    • 2011-11-14
    • Xiaoming WuYong LuHong LiuYinfeng WuQianyuan Liu
    • Xiaoming WuYong LuHong LiuYinfeng WuQianyuan Liu
    • C09D5/08C23C22/60C23C22/68H05K3/28
    • C09D5/086C23C22/60C23C22/68H05K3/282H05K2203/0786H05K2203/0793
    • The present invention relates to a water-based pore sealing agent enhancing PCB coating anti-oxidation and anti-corrosion properties, consisting of, by weight, 4-12 parts of a corrosion inhibitor, 15-25 parts of a mixed surfactants system, 10-20 parts of an ion chelating agent, 6-15 parts of a pH regulator, 20-40 parts of a builder, and the rest being purified water. When used to perform pore sealing on a PCB, the water-based pore sealing agent is diluted with purified water first to be diluted 10-100 times, preferably, 100/8-100/3 times. The pH value is 7-11, and is preferably 7.5-9.5. The surface tension is 18-28 dyn/cm. The pore sealing treatment uses a immersion process, and preferably ultrasonic waves are added at the same time to assist in cleaning the pores. For the pore sealing treatment, the temperature is 20-60° C., and the time is 60-150 seconds. After pore sealing, the temperature for drying the coated piece is 80-150° C., and the time is 60-120 seconds. The PCB treated with the water-based pore sealing agent of the present invention undergoes the neutral salt spray test, the nitric acid vapor test, the mixed gas test, and the sulfur dioxide and bonding tensile strength test, and the results have indicated that the anti-oxidation and anti-corrosion properties of the coating thereof are significantly enhanced.
    • 本发明涉及一种提高PCB涂层抗氧化和抗腐蚀性能的水性密封剂,由重量比为4-12份的缓蚀剂组成,15-25份混合表面活性剂体系,10 -20份离子螯合剂,6-15份pH调节剂,20-40份助洗剂,其余为纯化水。 当用于在PCB上进行孔密封时,首先用净化水稀释水基密封剂以稀释10-100倍,优选为100 / 8-100 / 3倍。 pH值为7-11,优选为7.5-9.5。 表面张力为18-28dyn / cm。 孔密封处理使用浸渍法,优选同时加入超声波以辅助清洁毛孔。 对于孔密封处理,温度为20-60℃,时间为60-150秒。 孔密封后,涂层的干燥温度为80-150℃,时间为60-120秒。 用本发明的水性密封剂处理的PCB经过中性盐雾试验,硝酸蒸汽试验,混合气体试验,二氧化硫和接合拉伸强度试验,结果表明, 其涂层的抗氧化和抗腐蚀性能显着提高。
    • 14. 发明申请
    • AQUEOUS PHASE PORE SEALING AGENT IMROVING PCB COATING OXIDATION- RESISTANT AND CORROSION-RESISTANT PROPERTIES AND METHOD FOR USING SAME
    • 水性相位密封剂代用PCB涂层耐氧化和耐腐蚀性能及使用方法
    • US20140314967A1
    • 2014-10-23
    • US14358026
    • 2011-11-14
    • Xiaoming WuYong LuHong LiuYinfeng WuQianyuan Liu
    • Xiaoming WuYong LuHong LiuYinfeng WuQianyuan Liu
    • H05K3/28C09D5/08
    • C09D5/086C23C22/60C23C22/68H05K3/282H05K2203/0786H05K2203/0793
    • The present invention relates to a water-based pore sealing agent enhancing PCB coating anti-oxidation and anti-corrosion properties, consisting of, by weight, 4-12 parts of a corrosion inhibitor, 15-25 parts of a mixed surfactants system, 10-20 parts of an ion chelating agent, 6-15 parts of a pH regulator, 20-40 parts of a builder, and the rest being purified water. When used to perform pore sealing on a PCB, the water-based pore sealing agent is diluted with purified water first to be diluted 10-100 times, preferably, 100/8-100/3 times. The pH value is 7-11, and is preferably 7.5-9.5. The surface tension is 18-28 dyn/cm. The pore sealing treatment uses a immersion process, and preferably ultrasonic waves are added at the same time to assist in cleaning the pores. For the pore sealing treatment, the temperature is 20-60° C., and the time is 60-150 seconds. After pore sealing, the temperature for drying the coated piece is 80-150° C., and the time is 60-120 seconds. The PCB treated with the water-based pore sealing agent of the present invention undergoes the neutral salt spray test, the nitric acid vapor test, the mixed gas test, and the sulfur dioxide and bonding tensile strength test, and the results have indicated that the anti-oxidation and anti-corrosion properties of the coating thereof are significantly enhanced.
    • 本发明涉及一种提高PCB涂层抗氧化和抗腐蚀性能的水性密封剂,由重量比为4-12份的缓蚀剂组成,15-25份混合表面活性剂体系,10 -20份离子螯合剂,6-15份pH调节剂,20-40份助洗剂,其余为纯化水。 当用于在PCB上进行孔密封时,首先用净化水稀释水基密封剂以稀释10-100倍,优选为100 / 8-100 / 3倍。 pH值为7-11,优选为7.5-9.5。 表面张力为18-28dyn / cm。 孔密封处理使用浸渍法,优选同时加入超声波以辅助清洁毛孔。 对于孔密封处理,温度为20-60℃,时间为60-150秒。 孔密封后,涂层的干燥温度为80-150℃,时间为60-120秒。 用本发明的水性密封剂处理的PCB经过中性盐雾试验,硝酸蒸汽试验,混合气体试验,二氧化硫和接合拉伸强度试验,结果表明, 其涂层的抗氧化和抗腐蚀性能显着提高。
    • 18. 发明申请
    • LED driving device and control method
    • LED驱动装置及控制方法
    • US20150022100A1
    • 2015-01-22
    • US13811907
    • 2012-03-30
    • Hong ZhangXiaobin GuXiaoming WuLaijian ChenWei ChengHanniu Gong
    • Hong ZhangXiaobin GuXiaoming WuLaijian ChenWei ChengHanniu Gong
    • H05B33/08
    • H05B33/0815H05B33/0827H05B33/083H05B33/0851Y02B20/346
    • The invention is provided with an LED driving device and the control method. The driving device includes power converter, microprocessor and LED circuit. Wherein the power converter includes impulse transformer and switch control circuit. Primary winding at input side of the impulse transformer connects with rectifier filter circuit by the switch control circuit. Secondary winding at output side and auxiliary winding connect with power end of the microprocessor by constant voltage control switch. Output end of the microprocessor connects with LED circuit. The LED driving device and the control method provided by this invention collects on/off signal of mechanical lamp by using switch control circuit. Light is adjusted by LED circuit driven by the microprocessor, and thus heat elimination effect is improved, power consumption is lowered and brightness is enhanced.
    • 本发明提供一种LED驱动装置及其控制方法。 驱动装置包括电源转换器,微处理器和LED电路。 其中功率转换器包括脉冲变压器和开关控制电路。 脉冲变压器输入侧的初级绕组由开关控制电路与整流滤波电路连接。 输出侧次级绕组和辅助绕组通过恒压控制开关连接微处理器的电源端。 微处理器的输出端与LED电路连接。 本发明提供的LED驱动装置和控制方法通过使用开关控制电路来收集机械灯的开启/关闭信号。 光由微处理器驱动的LED电路调节,从而提高了散热效果,降低了功耗,提高了亮度。