CN109538994A - 一种散热效果好的led日光灯 - Google Patents
一种散热效果好的led日光灯 Download PDFInfo
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Abstract
本发明公开一种散热效果好的LED日光灯,包括:LED日光灯用散热外壳和封装在LED日光灯用散热外壳上的LED芯片。LED日光灯用散热外壳包括:铝合金基材与涂覆在铝合金基材表面的散热涂料。散热涂料的原料按重量份包括:有机硅改性环氧树脂55‑72,水性醇酸树脂24‑36,聚氨酯预聚体4‑12,填充补强剂20‑28,二月桂酸二丁基锡1‑1.8,乙二醇3‑9,2,4,6‑三(二甲氨基甲基)苯酚0.4‑1,稳定剂0.3‑1,流平剂0.4‑1,润滑剂1‑2,光稳定剂1‑1.8。填充补强剂包括:碳纳米管复合物等。碳纳米管复合物采用如下工艺制备:将多壁碳纳米管、椰子纤维混合,煅烧,冷却,研磨,水热反应,过滤,洗涤,干燥得到碳纳米管复合物。
Description
技术领域
本发明涉及LED技术领域,尤其涉及一种散热效果好的LED日光灯。
背景技术
LED灯具,以其高效、节能、长寿、小巧等技术特点,正在成为新一代照明市场的主力产品,而且有力地推动环保节能产业的高速发展。LED日光灯是LED灯具中使用的比较广泛的一种灯具,现有的LED日光灯均设置有散热外壳,但散热效果不佳。
发明内容
基于背景技术存在的技术问题,本发明提出了一种散热效果好的LED日光灯,使用寿命长,具有较高的热传导率,导热系数大,可在高温下长期稳定的工作,同时具有良好的机械强度和韧性,涂膜在骤冷骤热情况下不会剥落。
本发明提出的一种散热效果好的LED日光灯,包括:LED日光灯用散热外壳和封装在LED日光灯用散热外壳上的LED芯片。
优选地,LED日光灯用散热外壳包括:铝合金基材与涂覆在铝合金基材表面的散热涂料。
优选地,散热涂料的原料按重量份包括:有机硅改性环氧树脂55-72份,水性醇酸树脂24-36份,聚氨酯预聚体4-12份,填充补强剂20-28份,二月桂酸二丁基锡1-1.8份,乙二醇3-9份,2,4,6-三(二甲氨基甲基)苯酚0.4-1份,稳定剂0.3-1份,流平剂0.4-1份,润滑剂1-2份,光稳定剂1-1.8份。
优选地,填充补强剂包括:碳纳米管复合物、硼酸铝晶须、氧化铝、氧化锌。
优选地,碳纳米管复合物、硼酸铝晶须、氧化铝、氧化锌的重量比为12-25:4-10:1-4:0.4-1。
优选地,碳纳米管复合物采用如下工艺制备:将多壁碳纳米管、椰子纤维混合,煅烧,冷却至室温,研磨,加入水,水热反应,过滤,洗涤,干燥得到碳纳米管复合物。
优选地,碳纳米管复合物的制备工艺中,煅烧温度为400-500℃,煅烧时间为4-12min。
优选地,碳纳米管复合物的制备工艺中,研磨时间为4-10min,研磨速度为1200-1400r/min。
优选地,碳纳米管复合物的制备工艺中,水热反应时间为20-40h,水热反应温度为240-280℃。
优选地,碳纳米管复合物的制备工艺中,多壁碳纳米管、椰子纤维的重量比为4-16:10-18。
本发明所得散热效果好的LED日光灯的使用寿命长,具有良好的应用前景,值得推广,而且具有良好的物理性能、化学性能和施工性,具有较高的热传导率,导热系数大,可在高温下长期稳定的工作,同时具有良好的机械强度和韧性,涂膜在骤冷骤热情况下不会剥落。
多壁碳纳米管的碳原子以sp2杂化为主,同时六角型网格结构存在一定程度的弯曲,形成空间拓扑结构,其中可形成一定的sp3杂化键,即形成的化学键同时具有sp2和sp3混合杂化状态,而这些p轨道彼此交叠在碳纳米管石墨烯片层外形成高度离域化的大π键,其表面结合有大量的表面基团,如羧基等,而椰壳纤维韧性强,含有结晶化的呈螺旋状的纤维素,本发明的碳纳米管复合物通过将多壁碳纳米管、椰子纤维混合煅烧,椰壳纤维内部形成疏松多孔的结构,其分子细密多孔,而且质地坚硬,配合煅烧后多壁碳纳米管进行高速高压研磨,相互间充分分散,经过水热反应后,得到的粉体具有晶粒发育完整,粒度小,分布均匀,颗粒不易团聚,可充分分散在有机硅改性环氧树脂、水性醇酸树脂、聚氨酯预聚体中,在其中形成连续导热纤维结构,具有良好的导热效果,降温性好,可用来降低LED灯外壳的表面温度,从而达到降温的效果,而碳纳米管复合物与硼酸铝晶须、氧化铝配合,能提高涂膜的硬度,稳定涂层结构,而氧化锌和二月桂酸二丁基锡可促使形成网络状交联结构,使散热外壳的力学性能好,耐高温性能优异,而且可提高涂膜与铝合金基材的粘结力强,附着性能优异。
本发明所得LED日光灯在同样负载下温度下降10-15℃,或者在温升相同的情况下负载能力提高50%以上,而且散热外壳具有良好的机械性能,高导热性,其耐疲劳强度可达122-126MPa,弹性模量为7.12-7.4GPa,热传导率可达195-200W/(m·K)。
具体实施方式
下面,通过具体实施例对本发明的技术方案进行详细说明。
实施例1
一种散热效果好的LED日光灯,包括:LED日光灯用散热外壳和封装在LED日光灯用散热外壳上的LED芯片;LED日光灯用散热外壳包括:铝合金基材与涂覆在铝合金基材表面的散热涂料。
散热涂料的原料包括:有机硅改性环氧树脂55g,水性醇酸树脂36g,聚氨酯预聚体4g,填充补强剂28g,二月桂酸二丁基锡1g,乙二醇9g,2,4,6-三(二甲氨基甲基)苯酚0.4g,稳定剂1g,流平剂0.4g,润滑剂2g,光稳定剂1g。
填充补强剂由碳纳米管复合物、硼酸铝晶须、氧化铝、氧化锌按重量比为25:4:4:0.4组成。碳纳米管复合物采用如下工艺制备:将16g多壁碳纳米管、10g椰子纤维混合,500℃煅烧4min,空冷至室温,研磨10min,研磨速度为1200r/min,加入300g水,水热反应20h,水热反应温度为280℃,过滤,洗涤,干燥得到碳纳米管复合物。
实施例2
一种散热效果好的LED日光灯,包括:LED日光灯用散热外壳和封装在LED日光灯用散热外壳上的LED芯片;LED日光灯用散热外壳包括:铝合金基材与涂覆在铝合金基材表面的散热涂料。
散热涂料的原料包括:有机硅改性环氧树脂72g,水性醇酸树脂24g,聚氨酯预聚体12g,填充补强剂20g,二月桂酸二丁基锡1.8g,乙二醇3g,2,4,6-三(二甲氨基甲基)苯酚1g,稳定剂0.3g,流平剂1g,润滑剂1g,光稳定剂1.8g。
填充补强剂由碳纳米管复合物、硼酸铝晶须、氧化铝、氧化锌按重量比为12:10:1:1组成。碳纳米管复合物采用如下工艺制备:将4g多壁碳纳米管、18g椰子纤维混合,400℃煅烧12min,空冷至室温,研磨4min,研磨速度为1400r/min,加入200g水,水热反应40h,水热反应温度为240℃,过滤,洗涤,干燥得到碳纳米管复合物。
实施例3
一种散热效果好的LED日光灯,包括:LED日光灯用散热外壳和封装在LED日光灯用散热外壳上的LED芯片;LED日光灯用散热外壳包括:铝合金基材与涂覆在铝合金基材表面的散热涂料。
散热涂料的原料包括:有机硅改性环氧树脂60g,水性醇酸树脂33g,聚氨酯预聚体6g,填充补强剂26g,二月桂酸二丁基锡1.2g,乙二醇8g,2,4,6-三(二甲氨基甲基)苯酚0.6g,稳定剂0.8g,流平剂0.6g,润滑剂1.8g,光稳定剂1.2g。
填充补强剂由碳纳米管复合物、硼酸铝晶须、氧化铝、氧化锌按重量比为20:6:3:0.6组成。碳纳米管复合物采用如下工艺制备:将12g多壁碳纳米管、12g椰子纤维混合,470℃煅烧6min,空冷至室温,研磨8min,研磨速度为1250r/min,加入280g水,水热反应25h,水热反应温度为270℃,过滤,洗涤,干燥得到碳纳米管复合物。
实施例4
一种散热效果好的LED日光灯,包括:LED日光灯用散热外壳和封装在LED日光灯用散热外壳上的LED芯片;LED日光灯用散热外壳包括:铝合金基材与涂覆在铝合金基材表面的散热涂料。
散热涂料的原料包括:有机硅改性环氧树脂68g,水性醇酸树脂27g,聚氨酯预聚体10g,填充补强剂22g,二月桂酸二丁基锡1.6g,乙二醇4g,2,4,6-三(二甲氨基甲基)苯酚0.8g,稳定剂0.4g,流平剂0.8g,润滑剂1.2g,光稳定剂1.6g。
填充补强剂由碳纳米管复合物、硼酸铝晶须、氧化铝、氧化锌按重量比为16:8:2:0.8组成。碳纳米管复合物采用如下工艺制备:将8g多壁碳纳米管、16g椰子纤维混合,430℃煅烧10min,空冷至室温,研磨6min,研磨速度为1350r/min,加入220g水,水热反应35h,水热反应温度为250℃,过滤,洗涤,干燥得到碳纳米管复合物。
实施例5
一种散热效果好的LED日光灯,包括:LED日光灯用散热外壳和封装在LED日光灯用散热外壳上的LED芯片;LED日光灯用散热外壳包括:铝合金基材与涂覆在铝合金基材表面的散热涂料。
散热涂料的原料包括:有机硅改性环氧树脂64g,水性醇酸树脂30g,聚氨酯预聚体8g,填充补强剂24g,二月桂酸二丁基锡1.4g,乙二醇6g,2,4,6-三(二甲氨基甲基)苯酚0.7g,稳定剂0.6g,流平剂0.7g,润滑剂1.5g,光稳定剂1.4g。
填充补强剂由碳纳米管复合物、硼酸铝晶须、氧化铝、氧化锌按重量比为18:7:2.5:0.7组成。碳纳米管复合物采用如下工艺制备:将10g多壁碳纳米管、14g椰子纤维混合,450℃煅烧8min,空冷至室温,研磨7min,研磨速度为1300r/min,加入250g水,水热反应30h,水热反应温度为260℃,过滤,洗涤,干燥得到碳纳米管复合物。
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。
Claims (10)
1.一种散热效果好的LED日光灯,其特征在于,包括:LED日光灯用散热外壳和封装在LED日光灯用散热外壳上的LED芯片。
2.根据权利要求1所述散热效果好的LED日光灯,其特征在于,LED日光灯用散热外壳包括:铝合金基材与涂覆在铝合金基材表面的散热涂料。
3.根据权利要求2所述散热效果好的LED日光灯,其特征在于,散热涂料的原料按重量份包括:有机硅改性环氧树脂55-72份,水性醇酸树脂24-36份,聚氨酯预聚体4-12份,填充补强剂20-28份,二月桂酸二丁基锡1-1.8份,乙二醇3-9份,2,4,6-三(二甲氨基甲基)苯酚0.4-1份,稳定剂0.3-1份,流平剂0.4-1份,润滑剂1-2份,光稳定剂1-1.8份。
4.根据权利要求3所述散热效果好的LED日光灯,其特征在于,填充补强剂包括:碳纳米管复合物、硼酸铝晶须、氧化铝、氧化锌。
5.根据权利要求4所述散热效果好的LED日光灯,其特征在于,碳纳米管复合物、硼酸铝晶须、氧化铝、氧化锌的重量比为12-25:4-10:1-4:0.4-1。
6.根据权利要求4或5所述散热效果好的LED日光灯,其特征在于,碳纳米管复合物采用如下工艺制备:将多壁碳纳米管、椰子纤维混合,煅烧,冷却至室温,研磨,加入水,水热反应,过滤,洗涤,干燥得到碳纳米管复合物。
7.根据权利要求6所述散热效果好的LED日光灯,其特征在于,碳纳米管复合物的制备工艺中,煅烧温度为400-500℃,煅烧时间为4-12min。
8.根据权利要求6或7所述散热效果好的LED日光灯,其特征在于,碳纳米管复合物的制备工艺中,研磨时间为4-10min,研磨速度为1200-1400r/min。
9.根据权利要求6-8任一项所述散热效果好的LED日光灯,其特征在于,碳纳米管复合物的制备工艺中,水热反应时间为20-40h,水热反应温度为240-280℃。
10.根据权利要求6-9任一项所述散热效果好的LED日光灯,其特征在于,碳纳米管复合物的制备工艺中,多壁碳纳米管、椰子纤维的重量比为4-16:10-18。
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