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led封装胶水品牌哪个好

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可升降学生课桌椅多少钱一张九阳煮蛋器多少钱新型背景墙装饰材料有哪些求电动卷帘门电机报价套装门代理加盟哪家好厨房怎么简单装修罗莱毛毯怎么样，一般多少钱墙面装修刷漆是刷胶好还是用墙锢好呢？方管铁艺围栏多少钱一平家装水电改造注意事项有哪些卫星电视如何安装南阳业之峰装饰怎么样盼盼防盗门换锁芯要多少钱可视楼宇对讲怎么安装请问L型楼梯斜在电视上面的情况，电视背景墙可以怎样设计 楼梯3步+10步这样拐的，求一些案例图

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led封装胶水品牌哪个好

浏览：48次 | 提问时间： 08-03 10:02

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5个答案

曾以为可以天长地久 08-03 10:02

先在LED的封装主要有lamp直插式，SMD贴片式，大功率molding或者透镜的，集成模组，COB封装等等，各种封装所用的胶水都不太一样，lamp主要是用环氧树脂，其它几个基本都用硅胶，现在也有公司在研发改性的环氧树脂增加他的散热性能和降低它的黄边性能来替换硅胶使用，因为硅胶价格比较贵而环氧比较便宜。
1.环氧树脂和硅胶的主要差别是
价格
应力
环氧树脂有应力存在，而硅胶基本无应力
而应力存在的地方会导致热的积累，很多LED失效都是热的积累造成的
2.目前市场上的环氧树脂分为以下几类
双酚A环氧树脂，氢化环氧树脂，脂环类环氧树脂等
而这些的产品的价格也是由高到低的
应用的场合也是有很大的不同
举例，双酚A的环氧树脂不能应用到蓝光产品上，但是目前为了降价大家都在乱用而忽略了品质
3。硅胶分为两类
一类是*类硅胶，折射率在1。41
一类是*基类硅胶，折射率在》1。5
而这两类硅胶的优缺点很明显
*类的优点是耐黄变和耐温性相对本籍类比较好，但是所做产品的光通量相对*基的会比较弱
因此大家在考虑点不同的情况下要谨慎选择材料，特别是胶水
大功率尤其是3W封装时不要一味的追求亮度高，所以选择高折射率的胶水，因为高折射率的胶水里面含有*基也就是*环(具体请看23楼兄弟的详解)，这种结构耐高温性能差，尤其是3W电流大热量高散热不好的话荧光胶就变黑了(请看*我发的贴子1W大功率胶体发黑)，这样的话会适得其反，光通量会下降很多，而折射率低的胶水其耐温性能和可靠性就比较好，所以这个地方胶水折射率的选择一定要慎重，可根据客户的选择来做要求亮度那就高折射率，要求可靠稳定那就低折射率的胶水，你要是散热做得好的话就用高折射率，热是最大的问题。

孤独终老 08-03 10:11

目前LED基本都采用硅胶,*道康宁比较好,但是相对价格比较贵,具体什么型号的需要根据你的产品来确定。市面上还有比较流行的厂家：*信越、*长兴等等。

复制 08-03 10:19

进口：信越，道康宁。
国内：杰果，赛德。
都是可以信赖的品牌。

呛人心 08-03 10:27

一般的呢，稍微贵点的，质量还是挺好的，希望您到实体店*一下。。。

一个人情绪病^ 08-03 10:36

国外的就有道康宁、信越的   国内的有*天宝、兆舜、等等很多了   关键是要适合的封装胶

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