CN114434904A - 一种环氧树脂覆铜板及其制备方法 - Google Patents
一种环氧树脂覆铜板及其制备方法 Download PDFInfo
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Abstract
本发明涉及覆铜板技术领域,具体涉及一种环氧树脂覆铜板及其制备方法;包括半固化片,半固化片的两面均复合有铜箔,半固化片由玻璃纤维布侵入改性环氧树脂胶水中并通过烘箱预处理制得;本发明通过在环氧树脂溶液中加入导热填料,由于导热填料具有优异的导热性,混入环氧树脂溶液后,对环氧树脂溶液进行修改,使得环氧树脂溶液具有导热功能,同时,通过制备聚合物,形成微孔囊结构,制得阻燃剂,将阻燃剂作为环氧树脂覆铜板的材料,对环氧树脂覆铜板的耐热性和工作温度具有促进作用,进而提升了阻燃性,进而使得制备的环氧树脂覆铜板还具有良好的阻燃性,使得所制备的环氧树脂覆铜板的品质得到有效地提高与改善。
Description
技术领域
本发明涉及覆铜板技术领域,具体涉及一种环氧树脂覆铜板及其制备方法。
背景技术
随着科学技术的不断发展,人民的生活水平逐渐提高,对电子产品的需求量逐渐增大,同时也能发现电子产品的更新换代也越来越快,在各个行业,为了未来的发展均离不开电子行业,电子产品的应用将越来越广泛,电子信息产业逐渐进入了快速发展的黄金时期。覆铜板作为印制电路板和电子产品的基础,也将保持较快的发展。
在中国专利申请号为CN202110774947.8的专利文件中公开了《一种导热双面覆铜板及其制备方法》,在说明书中记载有“包括步骤:(1)于载体层表面制备导电铜层,载体层包括基材层及剥离层;(2)载体层及导电铜层形成供料卷;(3)提供热压装置、第一放卷装置、第二放卷装置、第一收卷装置、第二收卷装置和烘干装置,将导热胶液送入第一放卷装置传送的供料卷表面,经烘干装置干燥后与第二放卷装置传送的供料卷贴合,使得两供料卷及位于两者间的导热胶液共同进入两热压装置之间,经热压后形成绝缘层,制得覆铜板。该工艺避免薄铜受拉而易断裂的情形,实现具备导热性优良的覆铜板的制备,且制备过程中实现铜箔较薄且可提高生产效率和良率”,上述专利文件所制备的覆铜板虽然具有一定的导热的效果,但是其效果不佳,同时,其缺少良好的阻燃性能,影响了所制备的覆铜板的性能及质量。
综上所述,研发一种环氧树脂覆铜板及其制备方法,仍是覆铜板技术领域中急需解决的关键问题。
发明内容
针对现有技术所存在的上述缺点,本发明在于提供一种环氧树脂覆铜板及其制备方法,本发明通过在环氧树脂溶液中加入导热填料,由于导热填料具有优异的导热性,混入环氧树脂溶液后,对环氧树脂溶液进行修改,使得环氧树脂溶液具有导热功能,同时,通过制备聚合物,形成微孔囊结构,制得阻燃剂,将阻燃剂作为环氧树脂覆铜板的材料,对环氧树脂覆铜板的耐热性和工作温度具有促进作用,进而提升了阻燃性,进而使得制备的环氧树脂覆铜板还具有良好的阻燃性。
为实现上述目的,本发明提供了如下技术方案:
一种环氧树脂覆铜板,包括半固化片,所述半固化片的两面均复合有铜箔,所述半固化片由玻璃纤维布侵入改性环氧树脂胶水中并通过烘箱预处理制得。
通过采用上述技术方案:本发明半固化片由玻璃纤维布侵入改性环氧树脂胶水中并通过烘箱预处理制得,使得制备后的环氧树脂覆铜板,具有良好的导热性能和阻燃性能,使得所制备的环氧树脂覆铜板的品质得到有效地提高与改善。
本发明还提供了一种环氧树脂覆铜板的制备方法,包括以下步骤:
S1、制备改性环氧树脂胶水;
S2、将玻璃纤维布侵入到改性环氧树脂胶水中,取出玻璃纤维布置于烘箱中,在120-130℃的条件下干燥3-5min,获得半固化片;
S3、在半固化片的两面覆上铜箔,使用热压机压合成型,制得环氧树脂覆铜板。
通过采用上述技术方案:本发明通过对环氧树脂胶水进行改性,改性后的环氧树脂胶水在使用后,能够使得环氧树脂覆铜板,具有良好的导热性能和阻燃性能。
本发明进一步的设置为:在所述步骤S1中,制备改性环氧树脂胶水,包括以下步骤:
S101、将环氧树脂溶液加入搅拌机中,并向搅拌机中加入导热填料,在转速为1100-1200r/min的条件下,搅拌25-30min;
S102、向S101中的搅拌机加入阻燃剂、二氨基二苯砜以及三氟化硼三乙基膦,在转速为1500-2000r/min的条件下,搅拌20-30min,制得改性环氧树脂胶水。
通过采用上述技术方案:本发明通过在环氧树脂溶液中加入导热填料,由于导热填料具有优异的导热性,能够使得环氧树脂溶液具有导热性,同时,通过加入阻燃剂,能够使得环氧树脂胶水具有阻燃性,加入的二氨基二苯砜以及三氟化硼三乙基膦,起到固化剂和促进剂的作用。
本发明进一步的设置为:在所述步骤S101中,环氧树脂溶液的制备方法为:
将环氧树脂放入烧杯中;向烧杯中加入丙酮;待环氧树脂完全溶解后,加入双氰胺,在转速为800-1000r/min的条件下,搅拌10-12min,制得环氧树脂溶液。
通过采用上述技术方案:本发明通过加入丙酮,使得环氧树脂完全溶解,再加入双氰胺,制得环氧树脂溶液。
本发明进一步的设置为:在所述步骤S101中,所述导热填料为六方氮化硼、氧化镁和氧化铝的混合物。
通过采用上述技术方案:本发明添加的导热填料,能够改善制备的环氧树脂覆铜板的导热性。
本发明进一步的设置为:在所述步骤S102中,所述制备阻燃剂的方法为:
取六苯氧环三磷腈和乳化剂放入乙醇溶液中,在80-90℃的条件下搅拌20min,获得混合液;调节混合液的pH值为4-5;向调整pH值后的混合液中加入甲基丙烯酸甲酯,并加入交联剂,在75-80℃的条件下聚合4-5h,获得聚合物;将聚合物用水和乙醇洗涤5-8次,然后真空干燥48h,制得阻燃剂。
通过采用上述技术方案:本发明通过制备聚合物,形成微孔囊结构,制得阻燃剂,将阻燃剂作为环氧树脂覆铜板的材料,对环氧树脂覆铜板的耐热性和工作温度具有促进作用,进而提升了阻燃性。
本发明进一步的设置为:所述乳化剂为十二烷基苯磺酸钠、脂肪酸皂和十二烷基硫酸钠中的任意一种。
通过采用上述技术方案:本发明的乳化剂,使得六苯氧环三磷腈能够分散,然后在交联剂的作用下,与甲基丙烯酸甲酯充分交联,形成阻燃剂。
本发明进一步的设置为:所述交联剂为乙二醇二甲基丙烯酸酯。
通过采用上述技术方案:本发明通过交联剂将分散后的六苯氧环三磷腈与甲基丙烯酸甲酯充分交联。
本发明进一步的设置为:在所述步骤S3中,所述压合机压合成型分为四个阶段,其中第一阶段的参数为恒温80℃,热压时间为40min,压力为5Mpa,第二阶段的参数为以2℃/min的速度升温,在温度为180℃时停止升温,热压20min,压力为15Mpa,第三阶段的参数为恒温180℃,热压20min,压力为20Mpa,第四阶段的参数为以4℃/min的深度降温,冷却至室温停止降温,压力为25Mpa。
通过采用上述技术方案:本发明在不同的阶段,对压合机采用不同的参数,以便制备出优异的环氧树脂覆铜板。
有益效果
采用本发明提供的技术方案,与已知的公有技术相比,具有如下有益效果:
本发明通过在环氧树脂溶液中加入导热填料,由于导热填料具有优异的导热性,混入环氧树脂溶液后,对环氧树脂溶液进行修改,使得环氧树脂溶液具有导热功能,同时,通过制备聚合物,形成微孔囊结构,制得阻燃剂,将阻燃剂作为环氧树脂覆铜板的材料,对环氧树脂覆铜板的耐热性和工作温度具有促进作用,进而提升了阻燃性,进而使得制备的环氧树脂覆铜板还具有良好的阻燃性,使得所制备的环氧树脂覆铜板的品质得到有效地提高与改善。
附图说明
图1为一种环氧树脂覆铜板的立体图;
图2为一种环氧树脂覆铜板的制备方法的流程图。
图中标记说明:
10、半固化片;20、铜箔。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,下面将对本发明实施例中的技术方案进行清楚、完整地描述。显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
下面结合实施例对本发明作进一步的描述。
实施例1
请参照图1所示,一种环氧树脂覆铜板,包括半固化片10,半固化片10的两面均复合有铜箔20,半固化片10由玻璃纤维布侵入改性环氧树脂胶水中并通过烘箱预处理制得。
请参照图2所示,本发明还提供了一种环氧树脂覆铜板的制备方法,包括以下步骤:
步骤一、制备改性环氧树脂胶水。
制备改性环氧树脂胶水,包括以下步骤:
101)、将环氧树脂溶液加入搅拌机中,并向搅拌机中加入导热填料,在转速为1100r/min的条件下,搅拌25min。
102)、向步骤101)中的搅拌机加入阻燃剂、二氨基二苯砜以及三氟化硼三乙基膦,在转速为1500r/min的条件下,搅拌20min,制得改性环氧树脂胶水。
环氧树脂溶液的制备方法为:
将环氧树脂放入烧杯中;向烧杯中加入丙酮;待环氧树脂完全溶解后,加入双氰胺,在转速为800r/min的条件下,搅拌10min,制得环氧树脂溶液。
导热填料为六方氮化硼、氧化镁和氧化铝的混合物。
制备阻燃剂的方法为:
取六苯氧环三磷腈和乳化剂放入乙醇溶液中,在80℃的条件下搅拌20min,获得混合液;调节混合液的pH值为4;向调整pH值后的混合液中加入甲基丙烯酸甲酯,并加入交联剂,在75℃的条件下聚合4h,获得聚合物;将聚合物用水和乙醇洗涤5次,然后真空干燥48h,制得阻燃剂。
乳化剂为十二烷基苯磺酸钠。
交联剂为乙二醇二甲基丙烯酸酯。
步骤二、将玻璃纤维布侵入到改性环氧树脂胶水中,取出玻璃纤维布置于烘箱中,在120℃的条件下干燥3min,获得半固化片10。
步骤三、在半固化片10的两面覆上铜箔20,使用热压机压合成型,制得环氧树脂覆铜板。
压合机压合成型分为四个阶段,其中第一阶段的参数为恒温80℃,热压时间为40min,压力为5Mpa,第二阶段的参数为以2℃/min的速度升温,在温度为180℃时停止升温,热压20min,压力为15Mpa,第三阶段的参数为恒温180℃,热压20min,压力为20Mpa,第四阶段的参数为以4℃/min的深度降温,冷却至室温停止降温,压力为25Mpa。
实施例2
本实施例所提供的一种环氧树脂覆铜板及其制备方法大致和实施例1相同,其主要区别在于:
在步骤101)中,在转速为1150r/min的条件下,搅拌27min;
在步骤102)中,在转速为1700r/min的条件下,搅拌25min,制得改性环氧树脂胶水;
在环氧树脂溶液的制备方法中:在转速为900r/min的条件下,搅拌11min;
在制备阻燃剂的方法中:在85℃的条件下搅拌20min,获得混合液,调节混合液的pH值为5;在77℃的条件下聚合5h,获得聚合物,将聚合物用水和乙醇洗涤6次,然后真空干燥48h,制得阻燃剂。
乳化剂为脂肪酸皂;
实施例3
本实施例所提供的一种环氧树脂覆铜板及其制备方法大致和实施例1相同,其主要区别在于:
在步骤101)中,在转速为1200r/min的条件下,搅拌30min;
在步骤102)中,在转速为2000r/min的条件下,搅拌30min,制得改性环氧树脂胶水;
在环氧树脂溶液的制备方法中:在转速为1000r/min的条件下,搅拌12min;
在制备阻燃剂的方法中:在90℃的条件下搅拌20min,获得混合液,调节混合液的pH值为5;在80℃的条件下聚合5h,获得聚合物,将聚合物用水和乙醇洗涤8次,然后真空干燥48h,制得阻燃剂。
乳化剂为十二烷基硫酸钠;
性能测试
取实施例1-3和背景技术中专利申请号为CN202110774947.8的专利所制备的覆铜板作为对比例,并对所制备出的覆铜板的相关性能进行检测,其检测方法如下:
1、按照检测标准GB/T 36476-2018分别对上述各覆铜板的导热性能进行检测,将所得测试结果记录于表1;
表1 覆铜板的导热性能检测表
测试项目 | 导热率(W/(m·k)) |
实施例1 | 3.45 |
实施例2 | 3.47 |
实施例3 | 3.41 |
对比例 | 2.87 |
2、按照检测标准GB/T 4723-1992分别对上述各覆铜板的阻燃性能进行检测,将所得测试结果记录于表2;
表2 覆铜板的阻燃性能检测表
测试项目 | 阻燃性 |
实施例1 | 达到UL94V0级 |
实施例2 | 达到UL94V0级 |
实施例3 | 达到UL94V0级 |
对比例 | 达不到UL94V0级 |
通过分析上述各表中的相关数据可知,通过本发明所制备的覆铜板不仅具有良好的导热性能,而且还具有良好的阻燃性能。由此表明本发明提供的一种环氧树脂覆铜板及其制备方法具有更广阔的市场前景,更适宜推广。
本发明通过在环氧树脂溶液中加入导热填料,由于导热填料具有优异的导热性,混入环氧树脂溶液后,对环氧树脂溶液进行修改,使得环氧树脂溶液具有导热功能,同时,通过制备聚合物,形成微孔囊结构,制得阻燃剂,将阻燃剂作为环氧树脂覆铜板的材料,对环氧树脂覆铜板的耐热性和工作温度具有促进作用,进而提升了阻燃性,进而使得制备的环氧树脂覆铜板还具有良好的阻燃性,使得所制备的环氧树脂覆铜板的品质得到有效地提高与改善。
以上实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不会使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。
Claims (9)
1.一种环氧树脂覆铜板,其特征在于,包括半固化片,所述半固化片的两面均复合有铜箔,所述半固化片由玻璃纤维布侵入改性环氧树脂胶水中并通过烘箱预处理制得。
2.一种环氧树脂覆铜板的制备方法,其特征在于,使用了根据权利要求1所述的一种环氧树脂覆铜板,包括以下步骤:
S1、制备改性环氧树脂胶水;
S2、将玻璃纤维布侵入到改性环氧树脂胶水中,取出玻璃纤维布置于烘箱中,在120-130℃的条件下干燥3-5min,获得半固化片;
S3、在半固化片的两面覆上铜箔,使用热压机压合成型,制得环氧树脂覆铜板。
3.根据权利要求2所述的一种环氧树脂覆铜板的制备方法,其特征在于,在所述步骤S1中,制备改性环氧树脂胶水,包括以下步骤:
S101、将环氧树脂溶液加入搅拌机中,并向搅拌机中加入导热填料,在转速为1100-1200r/min的条件下,搅拌25-30min;
S102、向S101中的搅拌机加入阻燃剂、二氨基二苯砜以及三氟化硼三乙基膦,在转速为1500-2000r/min的条件下,搅拌20-30min,制得改性环氧树脂胶水。
4.根据权利要求3所述的一种环氧树脂覆铜板的制备方法,其特征在于,在所述步骤S101中,环氧树脂溶液的制备方法为:
将环氧树脂放入烧杯中;向烧杯中加入丙酮;待环氧树脂完全溶解后,加入双氰胺,在转速为800-1000r/min的条件下,搅拌10-12min,制得环氧树脂溶液。
5.根据权利要求3所述的一种环氧树脂覆铜板的制备方法,其特征在于,在所述步骤S101中,所述导热填料为六方氮化硼、氧化镁和氧化铝的混合物。
6.根据权利要求3所述的一种环氧树脂覆铜板的制备方法,其特征在于,在所述步骤S102中,所述制备阻燃剂的方法为:
取六苯氧环三磷腈和乳化剂放入乙醇溶液中,在80-90℃的条件下搅拌20min,获得混合液;调节混合液的pH值为4-5;向调整pH值后的混合液中加入甲基丙烯酸甲酯,并加入交联剂,在75-80℃的条件下聚合4-5h,获得聚合物;将聚合物用水和乙醇洗涤5-8次,然后真空干燥48h,制得阻燃剂。
7.根据权利要求6所述的一种环氧树脂覆铜板的制备方法,其特征在于,所述乳化剂为十二烷基苯磺酸钠、脂肪酸皂和十二烷基硫酸钠中的任意一种。
8.根据权利要求6所述的一种环氧树脂覆铜板的制备方法,其特征在于,所述交联剂为乙二醇二甲基丙烯酸酯。
9.根据权利要求2所述的一种环氧树脂覆铜板的制备方法,其特征在于,在所述步骤S3中,所述压合机压合成型分为四个阶段,其中第一阶段的参数为恒温80℃,热压时间为40min,压力为5Mpa,第二阶段的参数为以2℃/min的速度升温,在温度为180℃时停止升温,热压20min,压力为15Mpa,第三阶段的参数为恒温180℃,热压20min,压力为20Mpa,第四阶段的参数为以4℃/min的深度降温,冷却至室温停止降温,压力为25Mpa。
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CN105082669A (zh) * | 2015-09-23 | 2015-11-25 | 李会录 | 一种环氧玻纤布覆铜板的生产方法 |
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CN116766712B (zh) * | 2023-06-20 | 2024-01-02 | 江苏耀鸿电子有限公司 | 一种基于环氧树脂的ic封装基板及其加工工艺 |
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