CN110435254B - 一种高耐热、高cti的cem-3覆铜板的制备方法 - Google Patents

一种高耐热、高cti的cem-3覆铜板的制备方法 Download PDF

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CN110435254B
CN110435254B CN201910808235.6A CN201910808235A CN110435254B CN 110435254 B CN110435254 B CN 110435254B CN 201910808235 A CN201910808235 A CN 201910808235A CN 110435254 B CN110435254 B CN 110435254B
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bisphenol
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杨永亮
郑宝林
陈长浩
栾好帅
王丽亚
王彦
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SHANDONG JINBAO ELECTRONICS CO Ltd
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Abstract

本发明属于覆铜板生产技术领域,涉及一种高耐热、高CTI的CEM‑3覆铜板的制备方法。本发明制得的覆铜板板材的耐热性能够达到288℃、100s以上浮焊不分层、不起泡,耐热性有明显提高;CTI达到600V;阻燃达到FV0级;导热率达到0.8W/m·K;且使用低成本的填料,成本低廉,可以用于一般LED灯具的生产。

Description

一种高耐热、高CTI的CEM-3覆铜板的制备方法
技术领域
本发明涉及一种覆铜板,尤其涉及一种高耐热、高CTI的CEM-3覆铜板的制备方法,属于覆铜板生产技术领域。
背景技术
随着LED照明的普及,产品利润空间不断被挤压,各LED照明生产商急需一款成本低廉、加工性能良好、生产效率高的CCL产品。CEM-3以其优异的加工性能(相较于铝基板)、较低的成本(相较于FR-4)、较高的耐热性(相较于CEM-1)、良好的导热性能成为LED生产提高效率、降低成本的最优选择。
市场上现有的能够满足以上性能的产品,其成本普遍偏高,且大都使用氢氧化铝作为阻燃填料,导致产品耐热性较差。
发明内容
本发明针对上述现有技术存在的不足,提供一种高耐热、高CTI的CEM-3覆铜板的制备方法。
本发明解决上述技术问题的技术方案如下:一种高耐热、高CTI的CEM-3覆铜板的制备方法,步骤如下:
(1)表料半固化片胶液的制备:将30-40份环氧树脂A、3-7份潜伏性固化剂A、30-40份填料A、2-5份三氧化二锑和30-35份溶剂A混合,搅拌均匀;
(2)里料半固化片胶液的制备:将25-35份环氧树脂B、2-5份潜伏性固化剂B、40-50份填料B、3-5份三氧化二锑和25-30份溶剂B混合,搅拌均匀;
(3)将电子级玻纤布浸渍在步骤(1)制得的胶液中,在130-170℃条件下烘干,控制含胶量为43±2%,流动度为10±4%,制得高CTI表料半固化片;
(4)将电子级玻璃纸或玻璃毡浸渍在步骤(2)制得的胶液中,在130-160℃条件下烘干,控制含胶量为80±10%,流动度为12±4%,制得高耐热里料半固化片;
(5)取若干张步骤(4)制得的高耐热里料半固化片叠加在一起,在单面或双面各覆有一张步骤(3)所得的高CTI表料半固化片,最后在高CTI表料半固化片上覆有一张铜箔,在160-180℃、30-50kgf/cm2条件下热压90-150min,制得高耐热、高CTI的CEM-3覆铜板。
在上述技术方案的基础上,本发明还可以做如下改进。
进一步,步骤(1)中所述环氧树脂A为双酚A型环氧树脂、异氰酸酯改性环氧树脂、四酚基乙烷四缩水甘油醚环氧树脂、双环戊二烯环氧树脂或双酚A型溴化环氧树脂中的一种或两种以上混合;其中,双酚A型环氧树脂、双酚A型溴化环氧树脂的环氧当量为400-500g/eq;
步骤(1)中所述潜伏性固化剂A为DICY或DDS;
步骤(1)中所述填料A为经过硅烷偶联剂改性处理过的氢氧化镁、滑石粉或二氧化硅中的一种或两种以上混合,粒度为1-15μm;
步骤(1)中所述三氧化二锑的粒度为0.3-0.9μm;
步骤(1)中所述的溶剂A为丙酮、丁酮、丙二醇甲醚、DMF或甲苯中的一种或两种以上混合。
进一步,步骤(2)中所述环氧树脂B为双酚A型环氧树脂、异氰酸酯改性环氧树脂、四酚基乙烷四缩水甘油醚环氧树脂、双环戊二烯环氧树脂或双酚A型溴化环氧树脂中的一种或两种以上混合;其中,双酚A型环氧树脂、双酚A型溴化环氧树脂的环氧当量为400-500g/eq;
步骤(2)中所述潜伏性固化剂B为DICY或DDS;
步骤(2)中所述填料B为经过硅烷偶联剂改性处理过的氢氧化镁、滑石粉或二氧化硅中的一种或两种以上混合,粒度为1-15μm;
步骤(2)中所述三氧化二锑的粒度为0.3-0.9μm;
步骤(2)中所述的溶剂B为丙酮、丁酮、丙二醇甲醚、DMF或甲苯中的一种或两种以上混合。
更进一步,所述的硅烷偶联剂为KH-550或KH-560。
进一步,所述的含胶量是指浸胶用树脂乳液纯固体占浸胶料片重量的百分比;所述的流动度是指浸胶用树脂乳液在30MPa、170±2℃下流出的重量占浸胶用树脂乳液总重量的百分比。
本发明的有益效果是:
1、本发明选用三氧化二锑作为阻燃助剂,成功解决阻燃问题,从而为填料的选择提供了更加宽广的范围,为成本的降低打好基础;填料表面活性剂的应用,可提高树脂体系中填料的含量,降低成本的同时保证了产品较好的导热性能。
2、本发明制得的覆铜板板材的耐热性能够达到288℃、100s以上浮焊不分层、不起泡,耐热性有明显提高;CTI达到600V;阻燃达到FV0级;导热率达到0.8W/m·K;且使用低成本的填料,成本低廉,可以用于一般LED灯具的生产。
具体实施方式
以下结合实例对本发明的原理和特征进行描述,所举实例只用于解释本发明,并非用于限定本发明的范围。
实施例1
一种高耐热、高CTI的CEM-3覆铜板的制备方法,步骤如下:
(1)表料半固化片胶液的制备:将25份双酚A型环氧树脂、5份双酚A型溴化环氧树脂、2份四酚基乙烷四缩水甘油醚环氧树脂、3份双氰胺、25份硅烷偶联剂改性氢氧化镁、5份硅烷偶联剂改性滑石粉、2.5份三氧化二锑和33份DMF混合,搅拌均匀;
(2)里料半固化片胶液的制备:将23份双酚A型溴化环氧树脂、3份四酚基乙烷四缩水甘油醚环氧树脂、3份双氰胺、37份硅烷偶联剂改性氢氧化镁、5份硅烷偶联剂改性滑石粉、3份三氧化二锑、20份DFM和10份丙酮混合,搅拌均匀;
(3)将电子级玻纤布浸渍在步骤(1)制得的胶液中,在170℃条件下烘干,控制含胶量为43%,流动度为10%,制得高CTI表料半固化片;
(4)将电子级玻璃纸或玻璃毡浸渍在步骤(2)制得的胶液中,在150℃条件下烘干,控制含胶量为80%,流动度为14%,制得高耐热里料半固化片;
(5)取一张步骤(4)制得的高耐热里料半固化片,在单面覆有一张步骤(3)所得的高CTI表料半固化片,最后在高CTI表料半固化片上覆有一张铜箔,在170℃、40kgf/cm2条件下热压90min,制得高耐热、高CTI的CEM-3覆铜板。
实施例2
一种高耐热、高CTI的CEM-3覆铜板的制备方法,步骤如下:
(1)表料半固化片胶液的制备:将20份双酚A型环氧树脂、10份双酚A型溴化环氧树脂、2份异氰酸酯改性环氧树脂、3份双氰胺、20份硅烷偶联剂改性氢氧化镁、5份硅烷偶联剂改性滑石粉、5份硅烷偶联剂改性二氧化硅、2份三氧化二锑和33份DMF混合,搅拌均匀;
(2)里料半固化片胶液的制备:将20份双酚A型溴化环氧树脂、2份四酚基乙烷四缩水甘油醚环氧树脂、3份异氰酸酯改性环氧树脂、5份双氰胺、30份硅烷偶联剂改性氢氧化镁、5份硅烷偶联剂改性滑石粉、7.5份硅烷偶联剂改性二氧化硅、4份三氧化二锑、10份DFM、10份丙酮和10份丙二醇甲醚混合,搅拌均匀;
(3)将电子级玻纤布浸渍在步骤(1)制得的胶液中,在170℃条件下烘干,控制含胶量为43%,流动度为10%,制得高CTI表料半固化片;
(4)将电子级玻璃纸或玻璃毡浸渍在步骤(2)制得的胶液中,在150℃条件下烘干,控制含胶量为80%,流动度为13%,制得高耐热里料半固化片;
(5)取两张步骤(4)制得的高耐热里料半固化片叠加在一起,在双面各覆有一张步骤(3)所得的高CTI表料半固化片,最后在高CTI表料半固化片上覆有一张铜箔,在170℃、40kgf/cm2条件下热压90min,制得高耐热、高CTI的CEM-3覆铜板。
对比例1
一种覆铜板的制备方法,步骤如下:
(1)表料半固化片胶液的制备:将20份双酚A型环氧树脂、10份双酚A型溴化环氧树脂、2份异氰酸酯改性环氧树脂、3份双氰胺、20份氢氧化镁、5份滑石粉、5份二氧化硅、2份氢氧化铝和33份DMF混合,搅拌均匀;
(2)里料半固化片胶液的制备:将20份双酚A型溴化环氧树脂、2份四酚基乙烷四缩水甘油醚环氧树脂、3份异氰酸酯改性环氧树脂、5份双氰胺、30份氢氧化镁、5份滑石粉、7.5份二氧化硅、4份三氧化二锑、10份DFM、10份丙酮和10份丙二醇甲醚混合,搅拌均匀;
(3)将电子级玻纤布浸渍在步骤(1)制得的胶液中,在170℃条件下烘干,控制含胶量为43%,流动度为10%,制得高CTI表料半固化片;
(4)将电子级玻璃纸或玻璃毡浸渍在步骤(2)制得的胶液中,在150℃条件下烘干,控制含胶量为80%,流动度为13%,制得高耐热里料半固化片;
(5)取两张步骤(4)制得的高耐热里料半固化片叠加在一起,在双面各覆有一张步骤(3)所得的高CTI表料半固化片,最后在高CTI表料半固化片上覆有一张铜箔,在170℃、40kgf/cm2条件下热压90min,制得高耐热、高CTI的CEM-3覆铜板
表1为实施例1和实施例2所得样品的各项性能对照表。
表1
序号 指标名称 单位 实施例1 实施例2 对比例1
1 剥离强度 N/mm 1.73 1.77 1.80
2 耐浸焊/288℃ S 130 120 60
3 CTI V 600 600 350
4 阻燃 FV0 FV0 FV0 FV0
5 导热率 W/M.K 0.8 0.77 0.75
6 单位面积成本 元/㎡ 87 88 100
由表1可以看出,本发明制得覆铜板的耐热性、导热性、CTI、阻燃性等满足LED灯板的基本需求,且耐热性高于一般产品的60-70s;同时成本比同类产品(100元/㎡)低10%之多。
以上所述仅为本发明的较佳实施例,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (4)

1.一种高耐热、高CTI的CEM-3覆铜板的制备方法,其特征在于,步骤如下:
(1)表料半固化片胶液的制备:将30-40份环氧树脂A、3-7份潜伏性固化剂A、30-40份填料A、2-5份三氧化二锑和30-35份溶剂A混合,搅拌均匀;
(2)里料半固化片胶液的制备:将25-35份环氧树脂B、2-5份潜伏性固化剂B、40-50份填料B、3-5份三氧化二锑和25-30份溶剂B混合,搅拌均匀;
(3)将电子级玻纤布浸渍在步骤(1)制得的胶液中,在130-170℃条件下烘干,控制含胶量为43±2%,流动度为10±4%,制得高CTI表料半固化片;
(4)将电子级玻璃纸或玻璃毡浸渍在步骤(2)制得的胶液中,在130-160℃条件下烘干,控制含胶量为80±10%,流动度为12±4%,制得高耐热里料半固化片;
(5)取若干张步骤(4)制得的高耐热里料半固化片叠加在一起,在单面或双面各覆有一张步骤(3)所得的高CTI表料半固化片,最后在高CTI表料半固化片上覆有一张铜箔,在160-180℃、30-50kgf/cm2条件下热压90-150min,制得高耐热、高CTI的CEM-3覆铜板;
步骤(1)中所述填料A为经过硅烷偶联剂改性处理过的氢氧化镁、滑石粉和二氧化硅中的一种或两种以上混合,粒度为1-15μm;
步骤(2)中所述填料B为经过硅烷偶联剂改性处理过的氢氧化镁、滑石粉和二氧化硅中的一种或两种以上混合,粒度为1-15μm;
步骤(1)中所述环氧树脂A为双酚A型环氧树脂、异氰酸酯改性环氧树脂、四酚基乙烷四缩水甘油醚环氧树脂、双环戊二烯环氧树脂和双酚A型溴化环氧树脂中的一种或两种以上混合;其中,双酚A型环氧树脂、双酚A型溴化环氧树脂的环氧当量为400-500g/eq;
步骤(2)中所述环氧树脂B为双酚A型环氧树脂、异氰酸酯改性环氧树脂、四酚基乙烷四缩水甘油醚环氧树脂、双环戊二烯环氧树脂和双酚A型溴化环氧树脂中的一种或两种以上混合;其中,双酚A型环氧树脂、双酚A型溴化环氧树脂的环氧当量为400-500g/eq;
所述的含胶量是指浸胶用树脂乳液纯固体占浸胶料片重量的百分比;所述的流动度是指浸胶用树脂乳液在30MPa、170±2℃下流出的重量占浸胶用树脂乳液总重量的百分比。
2.根据权利要求1所述的制备方法,其特征在于,步骤(1)中所述潜伏性固化剂A为DICY或DDS;
步骤(1)中所述三氧化二锑的粒度为0.3-0.9μm;
步骤(1)中所述的溶剂A为丙酮、丁酮、丙二醇甲醚、DMF和甲苯中的一种或两种以上混合。
3.根据权利要求1所述的制备方法,其特征在于,步骤(2)中所述潜伏性固化剂B为DICY或DDS;
步骤(2)中所述三氧化二锑的粒度为0.3-0.9μm;
步骤(2)中所述的溶剂B为丙酮、丁酮、丙二醇甲醚、DMF和甲苯中的一种或两种以上混合。
4.根据权利要求2或3所述的制备方法,其特征在于,所述的硅烷偶联剂为KH-550或KH-560。
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