CN107236257A - 一种用于汽车用覆铜板的耐CAF、高Tg、高耐热树脂组合物 - Google Patents

一种用于汽车用覆铜板的耐CAF、高Tg、高耐热树脂组合物 Download PDF

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CN107236257A
CN107236257A CN201710544594.6A CN201710544594A CN107236257A CN 107236257 A CN107236257 A CN 107236257A CN 201710544594 A CN201710544594 A CN 201710544594A CN 107236257 A CN107236257 A CN 107236257A
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caf
clad plate
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epoxy resin
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丛姣姣
方业纬
方廷亮
姜立勇
周飞
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Wuxi Hongren Electronic Materials Technology Co Ltd
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Abstract

本发明公开一种用于汽车用覆铜板的耐CAF、高Tg、高耐热树脂组合物，该组合物以固形物重量份计，包括如下组分：联苯型环氧树脂5～35份，双酚A型环氧树脂5～40份，低溴/高溴环氧树脂10～65份，MDI改性环氧树脂1～15份，酚醛树脂20～50份，重晶石10～40份，促进剂0.05～1份。本发明所制覆铜板具有高Tg、高耐热性、良好的韧性、低吸湿性、良好的耐CAF性等优良的综合性能，且达到阻燃要求，具有良好的加工性能，在新能源汽车领域电子产品生产行业具有广阔的应用前景。

Description

一种用于汽车用覆铜板的耐CAF、高Tg、高耐热树脂组合物
技术领域
本发明涉及覆铜板技术领域，具体涉及一种用于汽车用覆铜板的耐CAF、高Tg、高耐热树脂组合物。
背景技术
目前覆铜板广泛用于制造各类家用电器、电子信息产品及工业电子产品所用的印制电路板(简称PCB)，它作为印制电路板的基板材料，起着承载装联电子元器件、形成导电线路图形及在层间和线路间绝缘的三大功能，是一种重要的电子基础材料。
近二三十年来，随着电子信息技术的快速发展和汽车制造业的不断变革，汽车电子技术的应用和创新极大地推动了汽车工业的进步与发展，这间接带动了汽车电路板的市场发展。2015年，全球汽车线路板占行业总产值9％，大约53亿美元；预计到2020年，全球汽车线路板占有率将达到15％。
汽车线路板可靠性作为整车可靠性保证的一部分，要求十分严格，不仅要求供应厂家通过汽车质量管理体系QS9000认证，还要对其质量控制能力进行苛刻评估。现有汽车线路板产品多采用特殊性能覆铜板材料，要求覆铜板具有高Tg、高耐热性、低吸湿性、良好的耐CAF性能。汽车动力控制系统和制动控制系统用汽车线路板，其设计和制程要求更高的可靠性，如汽车控制系统，部分关键器件要求进行高达500～2000次高低温循环(车载装置要求200循环)，这就要求汽车用覆铜板具有高耐热性；对于汽车用PCB，其引擎部分及周边位置耐热性要求比较高，因此要求汽车用覆铜板具有高耐热性和高Tg。
在汽车用覆铜板方面，高Tg材料、耐CAF材料、高耐热材料作为应用于汽车电子产品主要特种材料，近两年逐渐成为特种PCB的研发热点和利润亮点。在国内开发相对比较缓慢，也基本无形成规模，且因技术不成熟，产品综合性能不高，使其推广和应用范围受到限制。
发明内容
针对现有技术存在的问题，本发明旨在提供一种用于汽车用覆铜板的耐CAF、高Tg、高耐热树脂组合物，为实现该技术目的，本发明采用以下技术方案：
一种用于汽车用覆铜板的耐CAF、高Tg、高耐热树脂组合物，以固形物重量份计，包括如下组分：
作为优选，该树脂组合物以固形物重量份计，包括如下组分：
作为优选，所述联苯型环氧树脂选自如(1)、(2)、(3)所示化学结构的环氧树脂的一种或几种的混合物：
更优选地，所述联苯型环氧树脂选自牌号YX4000、牌号YL612、牌号NC3000中的一种或几种的混合物。
作为优选，所述双酚A型环氧树脂环氧当量为200～450g/eq。
作为优选，所述低溴/高溴环氧树脂环氧当量为300～550g/eq，溴含量为15％～85％；所述低溴/高溴环氧树脂选自溴化双酚A型环氧树脂、溴化酚醛型环氧树脂、二溴季戊二醇型环氧树脂中的一种或几种的混合物。
作为优选，所述MDI改性环氧树脂的环氧当量为200～350g/eq。
作为优选，所述酚醛树脂为邻甲酚型酚醛树脂、线性酚醛树脂、双酚A型酚醛树脂、苯酚型酚醛树脂中的一种或几种的混合物。
作为优选，所述重晶石粒径范围为0.2～0.6μm。
作为优选，所述促进剂为2-乙基-4-甲基咪唑、2-乙基咪唑、2-苯基咪唑、2-甲基咪唑、1-苄基-2-甲基咪唑、十一烷基咪唑中的一种或几种的混合物。
本发明申请人针对传统汽车用覆铜板存在的性能缺陷，经过不断研究改进，研发出一款专用于车用覆铜板的新型树脂组合物，在该组合物中：联苯型环氧树脂在环氧树脂骨架中引入了高刚性的联苯基团，一方面可以提高其耐热性，另一方面可以减小自由体积以提高韧性和降低吸湿性，提高耐CAF性；重晶石本身耐热温度高达800℃，且不含结晶水，受热过程中不会像氢氧化铝或勃姆石等含结晶水的填料一样因脱水使覆铜板出现爆板；双酚A型环氧树脂固化物有很高的强度、粘结强度、耐腐蚀性和高Tg；低溴/高溴环氧树脂的加入可使有卤覆铜板产品耐燃性能达到UL94-V0级；MDI改性环氧树脂为异氰酸酯改性环氧树脂，可以提高覆铜板的韧性，且不影响板材的耐热性和阻燃性；酚醛树脂属于邻甲基线性且多官能团的环氧树脂，其酚醛邻位被极性基团甲基取代，分子间作用力强，玻璃化转变温度较高，耐热性优异。经性能测试证明，本发明树脂组合物中的联苯型环氧树脂、重晶石结合双酚A型环氧树脂、低溴/高溴环氧树脂、MDI改性环氧树脂、酚醛树脂，按照特定比例加以复配后协同发挥效应，所制覆铜板具有高Tg、高耐热性、良好的韧性、低吸湿性、良好的耐CAF性等优良的综合性能，且达到阻燃要求，具有良好的加工性能，在新能源汽车领域电子产品生产行业具有广阔的应用前景。
具体实施方式
下面通过实施例详细说明本发明的具体实施例，但不对本发明的权利要求做任何限定。
实施例1
本实施例耐CAF、高Tg、高耐热树脂组合物，以固形物重量份计，包括如下组份：YX4000号联苯型环氧树脂10份，双酚A型环氧树脂20份，高溴环氧树脂15份，MDI改性环氧树脂10份，双酚A型酚醛树脂30份，重晶石15份，2-苯基咪唑0.8份。
实施例2
本实施例耐CAF、高Tg、高耐热树脂组合物，以固形物重量份计，包括如下组份：YL612号联苯型环氧树脂12份，双酚A型环氧树脂18份，高溴环氧树脂18份，MDI改性环氧树脂7份，苯酚型酚醛树脂35份，重晶石10份，2-乙基-4-甲基咪唑0.2份、2-甲基咪唑0.3份。
实施例3
本实施例耐CAF、高Tg、高耐热树脂组合物，以固形物重量份计，包括如下组份：NC3000号联苯型环氧树脂8份，苯酚-对二甲苯型环氧树脂20份，苯酚型酚醛环氧树脂20份，含磷酚醛树脂25份，邻甲酚型酚醛树脂15份，重晶石12份，2-苯基咪唑、2-甲基咪唑0.5份。
对比例1
本对比例树脂组合物，以固形物重量份计，包括如下组份：双酚A型环氧树脂25份，高溴环氧树脂18份，MDI改性环氧树脂12份，苯酚型酚醛树脂30份，勃姆石15份，2-苯基咪唑0.6份。
对比例2
本对比例树脂组合物，以固形物重量份计，包括如下组份：双酚A型环氧树脂20份，高溴环氧树脂18份，MDI改性环氧树脂12份，双酚A型酚醛树脂30份，氢氧化铝20份，2-甲基咪唑0.7份。
实施例1～实施例3以及对比例1～对比例2树脂组合物各组分配比具体参见表1。
表1实施例1～实施例3以及对比例1～对比例2树脂组合物各组分配比(以固形物重量份计)
组分名称 实施例1 实施例2 实施例3 对比例1 对比例2
YX4000牌号联苯型环氧树脂 10 0 0 0 0
YL612牌号联苯型环氧树脂 0 12 0 0 0
NC3000牌号联苯型环氧树脂 0 0 5 0 0
双酚A型环氧树脂 20 18 20 25 20
高溴环氧树脂 15 18 10 18 18
低溴环氧树脂 0 0 10 0 0
MDI改性环氧树脂 10 7 8 12 12
苯酚型酚醛树脂 0 35 0 30 0
双酚A型酚醛树脂 30 0 0 0 30
邻甲酚型酚醛树脂 0 0 35 0 0
重晶石 15 10 12 0 0
促进剂 0.8 0.5 0.5 0.6 0.7
勃姆石 0 0 0 15 0
氢氧化铝 0 0 0 0 20
将上述树脂组合物分别用于制作覆铜板，制作方法包括如下步骤：
(1)室温下，按配方称取各重量组份并添加适量溶剂，搅拌使其混合均匀，得胶液；
(2)将稀释后的树脂胶液均匀涂覆在电子级玻纤布上，然后浸过胶液的玻纤布通过立式或横式含浸机，185℃烘烤4分钟，制得半固化片；
(3)将6张半固化片叠在一起，上下各覆一张铜箔，放入真空热压机中层压，层压条件为210℃、180分钟，制得覆铜板。
实施例1～实施例3以及对比例1～对比例2树脂组合物所制覆铜板性能测试结果参见表2。
表2实施例1～实施例3以及对比例对比例1～对比例2树脂组合物所制覆铜板性能测试结果
测试项目 测试条件 实施例1 实施例2 实施例3 对比例1 对比例2
Tg(℃) DSC 168 163 165 155 143
Td 5％loss(℃) TGA 365 358 361 340 323
T288(min) TMA ＞60 ＞60 ＞60 35 18
耐浸焊性(s) 288℃极限，带铜 ＞600 ＞600 ＞600 ＜300 ＜300
热冲击次数(次) 288℃/10s循环 ＞20 ＞20 ＞20 7 8
PCT吸水率(％) 105℃烘2h，120℃蒸煮2h 0.22 0.25 0.24 0.35 0.37
燃烧性(s) UL94 V-0 V-0 V-0 V-0 V-0
加工性 钻孔 良好 良好 良好 一般 一般
由表2测试数据可知，与对比例1～对比例2相比，实施例1～实施例3树脂组合物制备的覆铜板具有高Tg、高耐热性、良好的韧性、低吸湿性、良好的耐CAF性等优良的综合性能，且达到阻燃要求，具有理想的加工性能。
如无特殊说明，以上实施例和对比例所涉及各原料均为市售通用商品。
可以理解的是，以上关于本发明的具体描述，仅用于说明本发明而并非受限于本发明实施例所描述的技术方案。本领域的普通技术人员应当理解，仍然可以对本发明进行修改或等同替换，以达到相同的技术效果；只要满足使用需要，都在本发明的保护范围之内。

Claims (10)

1.一种用于汽车用覆铜板的耐CAF、高Tg、高耐热树脂组合物，其特征在于：以固形物重量份计，包括如下组分：
2.如权利要求1所述的用于汽车用覆铜板的耐CAF、高Tg、高耐热树脂组合物，其特征在于：以固形物重量份计，包括如下组分：
3.如权利要求1所述的用于汽车用覆铜板的耐CAF、高Tg、高耐热树脂组合物，其特征在于：所述联苯型环氧树脂选自如(1)、(2)、(3)所示化学结构的环氧树脂的一种或几种的混合物：
4.如权利要求3所述的用于汽车用覆铜板的耐CAF、高Tg、高耐热树脂组合物，具特征在于：所述联苯型环氧树脂选自牌号YX4000、牌号YL612、牌号NC3000中的一种或几种的混合物。
5.如权利要求1所述的用于汽车用覆铜板的耐CAF、高Tg、高耐热树脂组合物，其特征在于：所述双酚A型环氧树脂环氧当量为200～450g/eq。
6.如权利要求1所述的用于汽车用覆铜板的耐CAF、高Tg、高耐热树脂组合物，其特征在于：所述低溴/高溴环氧树脂环氧当量为300～550g/eq，溴含量为15％～85％；所述低溴/高溴环氧树脂选自溴化双酚A型环氧树脂、溴化酚醛型环氧树脂、二溴季戊二醇型环氧树脂中的一种或几种的混合物。
7.如权利要求1所述的用于汽车用覆铜板的耐CAF、高Tg、高耐热树脂组合物，其特征在于：所述MDI改性环氧树脂的环氧当量为200～350g/eq。
8.如权利要求1所述的用于汽车用覆铜板的耐CAF、高Tg、高耐热树脂组合物，其特征在于：所述酚醛树脂为邻甲酚型酚醛树脂、线性酚醛树脂、双酚A型酚醛树脂、苯酚型酚醛树脂中的一种或几种的混合物。
9.如权利要求1所述的用于汽车用覆铜板的耐CAF、高Tg、高耐热树脂组合物，其特征在于：所述重晶石粒径范围为0.2～0.6μm。
10.如权利要求1所述的用于汽车用覆铜板的耐CAF、高Tg、高耐热树脂组合物，其特征在于：所述促进剂为2-乙基-4-甲基咪唑、2-乙基咪唑、2-苯基咪唑、2-甲基咪唑、1-苄基-2-甲基咪唑、十一烷基咪唑中的一种或几种的混合物。
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CN112250997A (zh) * 2020-10-21 2021-01-22 广德龙泰电子科技有限公司 一种耐热性环氧树脂组合物、无铅中Tg覆铜板及其制备方法
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CN114957916A (zh) * 2022-05-26 2022-08-30 江苏扬农锦湖化工有限公司 一种可固化树脂体系和绝缘材料及其制备方法和应用

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