CN105925078A - 一种led灯散热涂料 - Google Patents
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Abstract
本发明公开了一种LED灯散热涂料,其特征在于:包含如下重量份的各组分:成膜材料100份,导热硅脂50~80份,导热填料30~50份,挥发性有机溶剂300~500份,增塑剂10~30份,耐候剂2~6份,着色剂2~5份和表面活性剂3~8份。本发明提供的一种LED灯散热涂料,稳定性好,不易褪色,使用寿命长,散热性能强,可见光、近红外光和热红外光反射率高。
Description
技术领域
本发明涉及一种LED灯散热涂料,属于高分子材料技术领域。
背景技术
随着近些年来LED技术作为新一代照明技术受到了广泛关注,LED功率加大,散热问题也就越来越被人重视。LED的光衰或其寿命是直接和其结温有关,散热不好结温就高,寿命就短。
LED发热的原因是因为所加入的电能并没有全部转化为光能,而是一部分转化成为热能。LED的光效目前只有100lm/W,其电光转换效率大约只有20~30%左右。也就是说大约70%的电能都变成了热能。
LED芯片的热容量很小,一点点热量的积累就会使得芯片的结温迅速提高,如果长时期工作在高温的状态,它的寿命就会很快缩短。然而这些热量要能够真正引导出芯片到达外部空气,要经过很多途径。具体来说,LED芯片所产生的热,从它的金属散热块出来,先经过焊料到铝基板的PCB,再通过导热胶才到铝散热器。所以LED灯具的散热实际上包括导热和散热两个部分。
表面辐射散热处理灯壳表面做辐射散热处理,简单的就是涂抹散热涂料,可以将热量用辐射方式带离灯壳表面,可以很好地起到散热的效果。
但是目前的散热涂料存在散热效果差,可见光、近红外光和热红外光反射率低,稳定性差等问题。
发明内容
本发明解决的技术问题是,提供一种散热效果好,稳定性好的LED灯散热涂料。
为解决上述技术问题,本发明采用的技术方案为:
一种LED灯散热涂料,包含如下重量份的各组分:成膜材料100份,导热硅脂50~80份,导热填料30~50份,挥发性有机溶剂300~500份,增塑剂10~30份,耐候剂2~6份,着色剂2~5份和表面活性剂3~8份。
所述耐候剂包括紫外线吸收剂、吸波材料和热稳定剂。
所述紫外线吸收剂、吸波材料和热稳定剂的重量比为1:(0.3~0.8):(3.5~4.5)。
所述吸波材料包括多晶铁纤维吸收材料;所述紫外线吸收剂包括水杨酸酯类化合物;所述热稳定剂包括受阻酚类化合物。
所述成膜材料包括聚乙烯醇缩甲乙醛、聚乙烯醇缩甲丁醛、聚乙烯醇、火棉胶、玉米朊、羧甲基纤维素钠和聚乙烯吡咯烷酮中的一种或几种。
所述导热填料包括碳纤维、铜粉和铝粉中的一种或几种。
所述挥发性有机溶剂包括乙醇、丙酮和乙醚中的一种或几种。
所述增塑剂包括邻苯二甲酸二丁酯、甘油、丙二醇、山梨醇和甘露醇中的一种或几种。
所述着色剂包括色素。
所述表面活性剂包括聚山梨醇-80、十二烷基硫酸钠和豆磷脂中的一种或几种。
本发明提供的一种LED灯散热涂料,耐候剂的设置,使本发明稳定性好,不易褪色,使用寿命长;导热硅脂和导热填料的设置,使本发明散热性能强,可见光、近红外光和热红外光反射率高;导热填料包括碳纤维、铜粉和铝粉中的一种或几种的设置,使本发明对光线的发散性能好,涂布后的LED灯无眩光;色素的设置,使本发明的LED灯可根据需要设置各种颜色,美观性好;多晶铁纤维吸收材料的设置,使本发明为红外辐射体,既增加了杂质能级,提高了红外辐射系数,又保持了相应的热稳定性和耐热性。
具体实施方式
结合以下具体实施例,对本发明作进一步的详细说明,以下实例仅是说明性的,本发明的保护内容不局限于此。
实施例
1
:
一种LED灯散热涂料,包含如下重量份的各组分:成膜材料100份,导热硅脂50份,导热填料30份,挥发性有机溶剂300份,增塑剂10份,耐候剂2份,着色剂2份和表面活性剂3份。
所述耐候剂包括紫外线吸收剂、吸波材料和热稳定剂。
所述紫外线吸收剂、吸波材料和热稳定剂的重量比为1:0.3:3.5。
所述吸波材料包括多晶铁纤维吸收材料;所述紫外线吸收剂包括水杨酸酯类化合物;所述热稳定剂包括受阻酚类化合物。
所述成膜材料包括聚乙烯醇缩甲乙醛、聚乙烯醇缩甲丁醛、聚乙烯醇、火棉胶、玉米朊、羧甲基纤维素钠和聚乙烯吡咯烷酮中的一种或几种。
所述导热填料包括碳纤维、铜粉和铝粉中的一种或几种。
所述挥发性有机溶剂包括乙醇、丙酮和乙醚中的一种或几种。
所述增塑剂包括邻苯二甲酸二丁酯、甘油、丙二醇、山梨醇和甘露醇中的一种或几种。
所述着色剂包括色素。
所述表面活性剂包括聚山梨醇-80、十二烷基硫酸钠和豆磷脂中的一种或几种。
本实施例制备的LED灯散热涂料,涂布成膜后厚度为1.5mm,并且达到高散热、高亮度和高平均性的国家标准。
实施例
2
:
一种LED灯散热涂料,包含如下重量份的各组分:成膜材料100份,导热硅脂80份,导热填料50份,挥发性有机溶剂500份,增塑剂30份,耐候剂6份,着色剂5份和表面活性剂8份。
所述耐候剂包括紫外线吸收剂、吸波材料和热稳定剂。
所述紫外线吸收剂、吸波材料和热稳定剂的重量比为1:0.8:4.5。
所述吸波材料包括多晶铁纤维吸收材料;所述紫外线吸收剂包括水杨酸酯类化合物;所述热稳定剂包括受阻酚类化合物。
所述成膜材料包括聚乙烯醇缩甲乙醛、聚乙烯醇缩甲丁醛、聚乙烯醇、火棉胶、玉米朊、羧甲基纤维素钠和聚乙烯吡咯烷酮中的一种或几种。
所述导热填料包括碳纤维、铜粉和铝粉中的一种或几种。
所述挥发性有机溶剂包括乙醇、丙酮和乙醚中的一种或几种。
所述增塑剂包括邻苯二甲酸二丁酯、甘油、丙二醇、山梨醇和甘露醇中的一种或几种。
所述着色剂包括色素。
所述表面活性剂包括聚山梨醇-80、十二烷基硫酸钠和豆磷脂中的一种或几种。
本实施例制备的LED灯散热涂料,厚度为2.2mm,并且达到高散热、高亮度和高平均性的国家标准。
实施例
3
:
一种LED灯散热涂料,包含如下重量份的各组分:成膜材料100份,导热硅脂60份,导热填料40份,挥发性有机溶剂400份,增塑剂20份,耐候剂4份,着色剂3份和表面活性剂5份。
所述耐候剂包括紫外线吸收剂、吸波材料和热稳定剂。
所述紫外线吸收剂、吸波材料和热稳定剂的重量比为1:0.4:4。
所述吸波材料包括多晶铁纤维吸收材料;所述紫外线吸收剂包括水杨酸酯类化合物;所述热稳定剂包括受阻酚类化合物。
所述成膜材料包括聚乙烯醇缩甲乙醛、聚乙烯醇缩甲丁醛、聚乙烯醇、火棉胶、玉米朊、羧甲基纤维素钠和聚乙烯吡咯烷酮中的一种或几种。
所述导热填料包括碳纤维、铜粉和铝粉中的一种或几种。
所述挥发性有机溶剂包括乙醇、丙酮和乙醚中的一种或几种。
所述增塑剂包括邻苯二甲酸二丁酯、甘油、丙二醇、山梨醇和甘露醇中的一种或几种。
所述着色剂包括色素。
所述表面活性剂包括聚山梨醇-80、十二烷基硫酸钠和豆磷脂中的一种或几种。
本实施例制备的薄型LED灯导光板,厚度为1.8mm,并且达到高散热、高亮度和高平均性的国家标准。
以上所述仅是本发明的优选实施方式,应当指出:对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。
Claims (10)
1.一种LED灯散热涂料,其特征在于:包含如下重量份的各组分:成膜材料100份,导热硅脂50~80份,导热填料30~50份,挥发性有机溶剂300~500份,增塑剂10~30份,耐候剂2~6份,着色剂2~5份和表面活性剂3~8份。
2.根据权利要求1所述的一种LED灯散热涂料,其特征在于:所述耐候剂包括紫外线吸收剂、吸波材料和热稳定剂。
3.根据权利要求2所述的一种LED灯散热涂料,其特征在于:所述紫外线吸收剂、吸波材料和热稳定剂的重量比为1:(0.3~0.8):(3.5~4.5)。
4.根据权利要求2或3所述的一种LED灯散热涂料,其特征在于:所述吸波材料包括多晶铁纤维吸收材料;所述紫外线吸收剂包括水杨酸酯类化合物;所述热稳定剂包括受阻酚类化合物。
5.根据权利要求1所述的一种LED灯散热涂料,其特征在于:所述成膜材料包括聚乙烯醇缩甲乙醛、聚乙烯醇缩甲丁醛、聚乙烯醇、火棉胶、玉米朊、羧甲基纤维素钠和聚乙烯吡咯烷酮中的一种或几种。
6.根据权利要求1所述的一种LED灯散热涂料,其特征在于:所述导热填料包括碳纤维、铜粉和铝粉中的一种或几种。
7.根据权利要求1所述的一种LED灯散热涂料,其特征在于:所述挥发性有机溶剂包括乙醇、丙酮和乙醚中的一种或几种。
8.根据权利要求1所述的一种LED灯散热涂料,其特征在于:所述增塑剂包括邻苯二甲酸二丁酯、甘油、丙二醇、山梨醇和甘露醇中的一种或几种。
9.根据权利要求1所述的一种LED灯散热涂料,其特征在于:所述着色剂包括色素。
10.根据权利要求1所述的一种LED灯散热涂料,其特征在于:所述表面活性剂包括聚山梨醇-80、十二烷基硫酸钠和豆磷脂中的一种或几种。
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