CN107746697A - 基于cob光源用于制备白色基板的胶液及胶液的制备方法 - Google Patents
基于cob光源用于制备白色基板的胶液及胶液的制备方法 Download PDFInfo
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Abstract
本发明公开一种基于COB光源用于制备白色基板的胶液及胶液的制备方法,基于COB光源用于制备白色基板的胶液,其特征在于包括以下组分:双酚A型二氰酸酯树脂30~50重量份、双环戊二烯环氧树脂40~50重量份、E型环氧树脂10~30重量份、二甲基甲酰胺100重量份、二胺基二苯砜20~30重量份、乙酰丙酮合钴0.1重量份、金红石型钛白粉50~70重量份、氧化铝粉30~50重量份以及硅烷偶联剂3~10重量份。该胶液具有高耐热、高Tg、低CTE的特点,利用该胶液制备的白色基板品质较好。
Description
技术领域
本发明属于覆铜箔层压板技术领域,尤其涉及COB光源封装用白色覆铜箔层压板制备、制备中所采用的胶液以及胶液的制备方法。
背景技术
COB光源(Chip On Board)是将LED芯片直接贴在高反光率的镜面金属基板上的高光效集成面光源技术,是一种高功率集成面光源。由于其具有可靠性高,无死灯,无斑块、发光均匀而被照明电子产品青睐。COB光源基板制作,是将一双面PCB板经过开窗开孔,然后热压于镜面铝板上,然后将发光晶片直接贴于窗口内的镜面铝之上,镜面铝起至散热、反光之作用,PCB板为电晶片电路传输。基于芯片封装及COB较高的工作温度的要求,PCB基板必须具有高玻璃转化点温度(Tg)、高耐热以及极低的热膨胀系数性能,而且必须具有高反光率之特性。
常规的覆铜板系列中,玻璃纤维布增强的FR-4为主流材料,其玻璃转化点温度(Tg)为140℃,但因其Tg较低不能满足COB正常工作温度的要求;高Tg的FR-4基板,虽然具有较高的Tg,但膨胀系数较大,在COB封装过程以及COB发光过程中的高热作用下,都会发生尺寸稳定的衰减。这些不良因素的影响,最终都会影响COB光源的可靠性。
发明内容
本发明的第一发明目的在于提供一种适用于制备COB封装基板的高耐热、高Tg、低CTE的胶液。
本发明采用的技术方案如下:基于COB光源需求用于制备白色基板的胶液包括以下组分:双酚A型二氰酸酯树脂30~50重量份、双环戊二烯环氧树脂40~50重量份、E型环氧树脂10~30重量份、二甲基甲酰胺100重量份、二胺基二苯砜20~30重量份、乙酰丙酮合钴0.1重量份、金红石型钛白粉50~70重量份、氧化铝粉30~50重量份以及硅烷偶联剂3~10重量份。
进一步的,双酚A型二氰酸酯树脂30重量份、双环戊二烯环氧树脂40重量份、E型环氧树脂30重量份、二甲基甲酰胺100重量份、二胺基二苯砜30重量份、乙酰丙酮合钴0.1重量份、金红石型钛白粉50重量份、氧化铝粉50重量份以及硅烷偶联剂5重量份。
进一步的,双酚A型二氰酸酯树脂50重量份、双环戊二烯环氧树脂40重量份、E型环氧树脂10重量份、二甲基甲酰胺100重量份、二胺基二苯砜30重量份、乙酰丙酮合钴0.1重量份、金红石型钛白粉70重量份、氧化铝粉30重量份以及硅烷偶联剂5重量份。
进一步的,双酚A型二氰酸酯树脂40重量份、双环戊二烯环氧树脂45重量份、E型环氧树脂15重量份、二甲基甲酰胺100重量份、二胺基二苯砜25重量份、乙酰丙酮合钴0.1重量份、金红石型钛白粉70重量份、氧化铝粉30重量份以及硅烷偶联剂10重量份。
进一步的,所述金红石型钛白粉大小为0.5μm;所述氧化铝粉为5μm。
本发明的第二发明目的在于提供胶液的制备方法。
1)加入二甲基甲酰胺溶剂,常温常压下,搅拌状态下加入固化剂二胺基二苯砜,溶解至透明;
2)加入双环戊二烯环氧树脂、E型环氧树脂,常温常压下,搅拌溶解至目测透亮清澈,目测无悬浮树脂微团;引入双环类环状环氧树脂:双环环氧树脂如酯环环氧树脂不但具有高的环氧值性能,同时具有稳定的化学结构,在该复合体系中,与氰酸脂、常规E型环氧交联反应,形成高交联密度的聚合结构;由于双环环氧树脂经过固化之后,形成大量的醚键,所以改良了该聚合物的粘接性能及韧性。
3)加入双酚A型二氰酸酯树脂,常温常压下搅拌均匀;氰酸酯树脂具有高的耐热性能,以之与环氧树脂配伍,交联固化之后形成一个相互接枝嵌段的高分子互穿网络结构。
4)加入用二甲基甲酰胺溶解好的乙酰丙酮合钴,调节胶液的胶化时间为200~260s/170~171℃;采用耐热性好的芳香胺固化剂体系,提高了其耐热性能。
5)加入硅烷偶联剂,搅拌30~60min;该复合树脂固化体系具有高Tg性能、高耐热性能,因此,也具备了低的热膨胀系数CTE性能。
6)加入金红石型钛白粉、氧化铝粉,高速搅拌至混合均匀。超细钛白粉起增白做用,提高白度,同时也具有阻光作用;导热粉起到提高板材的导热系数作用,使COB光源发出的热量快速散出。无机填料具有低的CTE性能,因此,钛白粉、导热粉体材料的引入,也赋予了板材的低CTE性能。
本发明的第三发明目的在于提供采用胶液制备用于COB装配的白色基板。
1)把2116玻璃布放置于立式涂胶机上涂胶,然后放入烘箱中烘烤,烘箱温度180~200℃,烘焙时间1~3min,形成半固化片;
2)控制半固化片的胶化时间维持80~120s/170~171℃;半固化片树脂含量维持56±5%;
3)按工艺厚度要求叠合相应张数的半固化片,然后覆上电解铜箔,于热压机中压制;控制热压机压制温度190~200℃/3h,压力30~40kg/cm2,最后形成白色基板。
COB封装白色基板用覆铜板,是引入酯环环氧,交联密度高而且树脂刚性结构稳定性好,再与氰酸酯类树脂高密度交联,形成耐高温的稳定化学结构。因此,白色基板Tg大于200℃,X、Y膨胀系数为6~12ppm/℃,Z轴膨胀系数小于45ppm/℃,使白色基板具有高耐热、高Tg、低CTE的特点。
具体实施方式
本说明书中公开的所有特征,或公开的所有方法或过程中的步骤,除了互相排斥的特征和/或步骤以外,均可以以任何方式组合。
本说明书(包括任何附加权利要求、摘要)中公开的任一特征,除非特别叙述,均可被其他等效或具有类似目的的替代特征加以替换。即,除非特别叙述,每个特征只是一系列等效或类似特征中的一个例子而已。
基于COB光源用于制备白色基板的胶液包括以下组分:双酚A型二氰酸酯树脂30~50重量份、双环戊二烯环氧树脂40~50重量份、E型环氧树脂10~30重量份、二甲基甲酰胺100重量份、二胺基二苯砜20~30重量份、乙酰丙酮合钴0.1重量份、金红石型钛白粉50~70重量份、氧化铝粉30~50重量份以及硅烷偶联剂3~10重量份。
所述金红石型钛白粉大小为0.5μm;所述氧化铝粉为5μm。
采用该配方能制出高耐热、高Tg、低CTE的基板的胶液。该胶液的制备过程如下:
1)加入二甲基甲酰胺溶剂,常温常压下,搅拌状态下加入固化剂二胺基二苯砜,溶解至透明;
2)加入双环戊二烯环氧树脂、E型环氧树脂,常温常压下,搅拌溶解至目测透亮清澈,目测无悬浮树脂微团;引入双环类环状环氧树脂:双环环氧树脂如酯环环氧树脂不但具有高的环氧值性能,同时具有稳定的化学结构,在该复合体系中,与氰酸脂、常规E型环氧交联反应,形成高交联密度的聚合结构;由于双环环氧树脂经过固化之后,形成大量的醚键,所以改良了该聚合物的粘接性能及韧性。
3)加入双酚A型二氰酸酯树脂,常温常压下搅拌均匀;氰酸酯树脂具有高的耐热性能,以之与环氧树脂配伍,交联固化之后形成一个相互接枝嵌段的高分子互穿网络结构。
4)加入用二甲基甲酰胺溶解好的乙酰丙酮合钴,调节胶液的胶化时间为200~260s/170~171℃;采用耐热性好的芳香胺固化剂体系,提高了其耐热性能。
5)加入硅烷偶联剂,搅拌30~60min;该复合树脂固化体系具有高Tg性能、高耐热性能,因此,也具备了低的热膨胀系数CTE性能。
6)加入金红石型钛白粉、氧化铝粉,高速搅拌至混合均匀。超细钛白粉起增白做用,提高白度,同时也具有阻光作用;导热粉起到提高板材的导热系数作用,使COB光源发出的热量快速散出。无机填料具有低的CTE性能,因此,钛白粉、导热粉体材料的引入,也赋予了板材的低CTE性能。
利用上述胶液制备用于COB光源技术的白色基板,其制备过程如下:
1)把2116玻璃布放置于立式涂胶机上涂胶,然后放入烘箱中烘烤,烘箱温度180~200℃,烘焙时间1~3min,形成半固化片;
3)控制半固化片的胶化时间维持80~120s/170~171℃;半固化片树脂含量维持56±5%;
4)按工艺厚度要求叠合相应张数的半固化片,然后覆上电解铜箔,于热压机中压制;控制热压机压制温度190~200℃/3h,压力30~40kg/cm2,最后形成白色基板。
实施例1
胶液配比:
按照上述胶液制备方法、玻璃布涂胶工艺、覆铜板压制工艺制作,白色基板特性性能指标如下:
实施例2
胶液配比:
材料名称 | 份数 |
双酚A型二氰酸酯树脂 | 50 |
双环戊二烯环氧树脂 | 40 |
E型环氧树脂 | 10 |
二甲基甲酰胺 | 100 |
二胺基二苯砜 | 30 |
乙酰丙酮合钴 | 0.1 |
金红石型钛白粉(0.5μm) | 70 |
氧化铝粉(5μm) | 30 |
硅烷偶联剂KH560 | 5 |
按照上述胶液制备方法、玻璃布涂胶工艺、覆铜板压制工艺制作,白色基板特性性能指标如下:
实施例3
胶液配比:
材料名称 | 份数 |
双酚A型二氰酸酯树脂 | 40 |
双环戊二烯环氧树脂 | 45 |
E型环氧树脂 | 15 |
二甲基甲酰胺 | 100 |
二胺基二苯砜 | 25 |
乙酰丙酮合钴 | 0.1 |
金红石型钛白粉(0.5μm) | 70 |
氧化铝粉(5μm) | 30 |
硅烷偶联剂KH560 | 10 |
按照上述胶液制备方法、玻璃布涂胶工艺、覆铜板压制工艺制作,白色基板特性性能指标如下:
综上,实例1、实例2、实例3,均达到专利技术设计的要求,综合评估,实例3制作工艺性较好,便于工艺控制。
所述胶液还存在以下配比:
一、双酚A型二氰酸酯树脂30重量份、双环戊二烯环氧树脂40重量份、E型环氧树脂10重量份、二甲基甲酰胺100重量份、二胺基二苯砜20重量份、乙酰丙酮合钴0.1重量份、金红石型钛白粉50重量份、氧化铝粉30重量份以及硅烷偶联剂3重量份。
二、双酚A型二氰酸酯树脂50重量份、双环戊二烯环氧树脂50重量份、E型环氧树脂30重量份、二甲基甲酰胺100重量份、二胺基二苯砜30重量份、乙酰丙酮合钴0.1重量份、金红石型钛白粉70重量份、氧化铝粉50重量份以及硅烷偶联剂10重量份。
三,双酚A型二氰酸酯树脂40重量份、双环戊二烯环氧树脂45重量份、E型环氧树脂20重量份、二甲基甲酰胺100重量份、二胺基二苯砜25重量份、乙酰丙酮合钴0.1重量份、金红石型钛白粉60重量份、氧化铝粉40重量份以及硅烷偶联剂7重量份。
以上实施例仅为充分公开而非限制本发明,凡基于本发明的创作主旨、未经创造性劳动的等效技术特征的替换,应当视为本申请揭露的范围。
Claims (7)
1.基于COB光源用于制备白色基板的胶液,其特征在于包括以下组分:双酚A型二氰酸酯树脂30~50重量份、双环戊二烯环氧树脂40~50重量份、E型环氧树脂10~30重量份、二甲基甲酰胺100重量份、二胺基二苯砜20~30重量份、乙酰丙酮合钴0.1重量份、金红石型钛白粉50~70重量份、氧化铝粉30~50重量份以及硅烷偶联剂3~10重量份。
2.如权利要求1所述的胶液,其特征在于包括以下组分:双酚A型二氰酸酯树脂30重量份、双环戊二烯环氧树脂40重量份、E型环氧树脂30重量份、二甲基甲酰胺100重量份、二胺基二苯砜30重量份、乙酰丙酮合钴0.1重量份、金红石型钛白粉50重量份、氧化铝粉50重量份以及硅烷偶联剂5重量份。
3.如权利要求1所述的胶液,其特征在于:双酚A型二氰酸酯树脂50重量份、双环戊二烯环氧树脂40重量份、E型环氧树脂10重量份、二甲基甲酰胺100重量份、二胺基二苯砜30重量份、乙酰丙酮合钴0.1重量份、金红石型钛白粉70重量份、氧化铝粉30重量份以及硅烷偶联剂5重量份。
4.如权利要求1所述的胶液,其特征在于:双酚A型二氰酸酯树脂40重量份、双环戊二烯环氧树脂45重量份、E型环氧树脂15重量份、二甲基甲酰胺100重量份、二胺基二苯砜25重量份、乙酰丙酮合钴0.1重量份、金红石型钛白粉70重量份、氧化铝粉30重量份以及硅烷偶联剂10重量份。
5.如权利要求1-4任意一项所述的胶液,其特征在于:所述金红石型钛白粉大小为0.5μm;所述氧化铝粉为5μm。
6.如权利要求1-4任意一项所述胶液的制备方法,其特征在于包括步骤:
1)加入二甲基甲酰胺溶剂,常温常压下,搅拌状态下加入固化剂二胺基二苯砜,溶解至透明;
2)加入双环戊二烯环氧树脂、E型环氧树脂,常温常压下,搅拌溶解至目测透亮清澈,目测无悬浮树脂微团;
3)加入双酚A型二氰酸酯树脂,常温常压下搅拌均匀;
4)加入用二甲基甲酰胺溶解好的乙酰丙酮合钴,调节胶液的胶化时间为200~260s/170~171℃;
5)加入硅烷偶联剂,搅拌30~60min;
6)加入金红石型钛白粉、氧化铝粉,高速搅拌至混合均匀。
7.如权利要求1-4任意一项所述白色基板的制备方法,其特征在于包括步骤:1)把2116玻璃布放置于立式涂胶机上涂胶,然后放入烘箱中烘烤,烘箱温度180~200℃,烘焙时间1~3min,形成半固化片;
2)控制半固化片的胶化时间维持80~120s/170~171℃;半固化片树脂含量维持56±5%;
3)按工艺厚度要求叠合相应张数的半固化片,然后覆上电解铜箔,于热压机中压制;控制热压机压制温度190~200℃/3h,压力30~40kg/cm2,最后形成白色基板。
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