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CN112194881A - 一种带有嵌入铜块的双面线路板的制作方法 - Google Patents

一种带有嵌入铜块的双面线路板的制作方法 Download PDF

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CN112194881A
CN112194881A CN202011073239.3A CN202011073239A CN112194881A CN 112194881 A CN112194881 A CN 112194881A CN 202011073239 A CN202011073239 A CN 202011073239A CN 112194881 A CN112194881 A CN 112194881A
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付鹏
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Abstract

本发明公开一种带有嵌入铜块的双面线路板的制作方法,包括有以下步骤:(1)将组分A、组分B、组分C、组分D、组分E、组分F、组分G、组分H、组分I、组分J和组分K依次加入装有机溶剂的容器中搅拌溶解、分散,以配制成树脂组合物胶水;各组分的质量份如下:组分A:55‑60份,组分B:32‑40份,组分C:35‑45份,组分D:15‑18份,组分E:35‑40份,组分F:20‑35份;应用本发明的配方所获得树脂组合物,并配合采用本发明方法制得的线路板具有优异的耐热性、更低的介电常数和介质损耗因数,更好的阻燃性及弯曲强度,更低的吸水率,适用于5G通讯领域,并且铜块不易脱落,使用寿命更长。

Description

一种带有嵌入铜块的双面线路板的制作方法
技术领域
本发明涉及线路板领域技术,尤其是指一种带有嵌入铜块的双面线路板的制作方法。
背景技术
随着电子工业的发展,电子产品体积越来越小,功率密度越来越大,散热问题显得尤为重要。为解决电路板散热问题,一般采用在电路板上埋入铜块,通过数控铣床方式在铜块上制作控深盲槽,将发热元器件直接贴装到铜块盲槽内的方式,热量通过铜块传导出去,满足散热的需求。
目前带嵌入铜块的线路板其上的铜块容易脱落,使用寿命短,并且目前的线路板普遍难以满足高频高速领域线路板对耐热性、力学性能、加工性、电性能方面的高要求,无法适用于5G通讯领域。因此,有必要研究一种方案以解决上述问题。
发明内容
有鉴于此,本发明针对现有技术存在之缺失,其主要目的是提供一种带有嵌入铜块的双面线路板的制作方法,其能有效解决现有之线路板上的铜块容易脱落并且难以满足高频高速领域线路板对耐热性、力学性能、加工性、电性能方面的高要求的问题。
为实现上述目的,本发明采用如下之技术方案:
一种带有嵌入铜块的双面线路板的制作方法,包括有以下步骤:
(1)将组分A、组分B、组分C、组分D、组分E、组分F、组分G、组分H、组分I、组分J和组分K依次加入装有机溶剂的容器中搅拌溶解、分散,以配制成树脂组合物胶水;各组分的质量份如下:组分A:55-60份,组分B:32-40份,组分C:35-45份,组分D:15-18份,组分E:35-40份,组分F:20-35份,组分G:80-100份,组分H:3-5份;组分I:20-30份,组分J:20-15份,组分K:150-200份,其中,
所述组分A的结构式为:
Figure BDA0002715880610000021
式一中R为含有2个碳原子的烷基结构,R1为含有6-8个碳原子的苯基机构,n为2或3;
所述组份B的结构式为:
Figure BDA0002715880610000022
所述组份C的结构式为:
Figure BDA0002715880610000031
式二中n为5-8的整数;
所述组份D的结构式为:
Figure BDA0002715880610000032
式三中m为2-3的整数;
所述组份E的结构式为:
Figure BDA0002715880610000033
式二中n为2-5的整数;
所述组份F为改性聚苯醚树脂,改性聚苯醚树脂的末端活性基团为烯丙基、乙烯基或苯乙烯基,重均分子量为2000-4000;所述组份G为固化剂;所述组分H为促进剂;所述组分I为有机阻燃剂;所述组分J为交联剂;所述组分K为填料;
(2)将玻纤布浸渍上述树脂组合物胶水中,然后在烘箱中烘干,制成半固化状态的粘结片;
(3)将粘结片按设定的张数叠料,并在双面覆以铜箔,形成半成品,然后,在半成品上开设嵌置槽,嵌置槽贯穿半成品的上下表面;
(4)取铜块,并在铜块的外周侧面开设环形卡槽,然后将铜块嵌入嵌置槽中;
(5)然后对嵌入铜块的半成品进行加热加压固化,在加热加压的过程中,物料自动填充之环形卡槽中,使得嵌入的铜块稳固结合固定,从而得到带有嵌入铜块的双面线路板。
优选的,所述有机溶剂为丙酮、丁酮、环己酮、二甲基甲酰胺、丙二醇甲醚、丙二醇甲醚醋酸酯中的一种或几种混合物。
优选的,所述组份G为酚类固化剂、胺类固化剂、酸类或酸酐固化剂、氰酸酯类中的一种或多种。
优选的,所述组分H为2-甲基咪唑、2-乙基-4-甲基咪唑、2-甲基-4-苯基咪唑中的一种或两种以上的混合物。
优选的,所述组分I为十溴二苯乙烷、十溴二苯醚、溴化聚苯乙烯、乙撑双四溴邻苯二甲酰亚胺和氰尿酸三聚氰胺中的至少一种。
优选的,所述组分J为苯乙烯、二乙烯苯、甲基丙烯酸甲酯和丁二烯中的至少一种。
本发明与现有技术相比具有明显的优点和有益效果,具体而言,由上述技术方案可知:
应用本发明的配方所获得树脂组合物,并配合采用本发明方法制得的线路板具有优异的耐热性、更低的介电常数和介质损耗因数,更好的阻燃性及弯曲强度,更低的吸水率,适用于5G通讯领域,并且铜块不易脱落,使用寿命更长。
为更清楚地阐述本发明的结构特征和功效,下面结合附图与具体实施例来对本发明进行详细说明:
附图说明
图1是本发明之较佳实施例的结构示意图。
附图标识说明:
11、粘结片 12、铜箔
101、嵌置槽 20、铜块
21、环形卡槽
具体实施方式
本发明揭示了一种带有嵌入铜块的双面线路板的制作方法,包括有以下步骤:
(1)将组分A、组分B、组分C、组分D、组分E、组分F、组分G、组分H、组分I、组分J和组分K依次加入装有机溶剂的容器中搅拌溶解、分散,以配制成树脂组合物胶水;各组分的质量份如下:组分A:55-60份,组分B:32-40份,组分C:35-45份,组分D:15-18份,组分E:35-40份,组分F:20-35份,组分G:80-100份,组分H:3-5份;组分I:20-30份,组分J:20-15份,组分K:150-200份,其中,
所述组分A的结构式为:
Figure BDA0002715880610000061
式一中R为含有2个碳原子的烷基结构,R1为含有6-8个碳原子的苯基机构,n为2或3;
所述组份B的结构式为:
Figure BDA0002715880610000062
所述组份C的结构式为:
Figure BDA0002715880610000063
Figure BDA0002715880610000071
式二中n为5-8的整数;
所述组份D的结构式为:
Figure BDA0002715880610000072
式三中m为2-3的整数;
所述组份E的结构式为:
Figure BDA0002715880610000073
式二中n为2-5的整数;
所述组份F为改性聚苯醚树脂,改性聚苯醚树脂的末端活性基团为烯丙基、乙烯基或苯乙烯基,重均分子量为2000-4000;所述组份G为固化剂;所述组分H为促进剂;所述组分I为有机阻燃剂;所述组分J为交联剂;所述组分K为填料。所述有机溶剂为丙酮、丁酮、环己酮、二甲基甲酰胺、丙二醇甲醚、丙二醇甲醚醋酸酯中的一种或几种混合物。所述组份G为酚类固化剂、胺类固化剂、酸类或酸酐固化剂、氰酸酯类中的一种或多种,所述组分H为2-甲基咪唑、2-乙基-4-甲基咪唑、2-甲基-4-苯基咪唑中的一种或两种以上的混合物,所述组分I为十溴二苯乙烷、十溴二苯醚、溴化聚苯乙烯、乙撑双四溴邻苯二甲酰亚胺和氰尿酸三聚氰胺中的至少一种,所述组分J为苯乙烯、二乙烯苯、甲基丙烯酸甲酯和丁二烯中的至少一种。所述有机溶剂为丙酮、丁酮、环己酮、二甲基甲酰胺、丙二醇甲醚、丙二醇甲醚醋酸酯中的一种或几种混合物。
(2)将玻纤布浸渍上述树脂组合物胶水中,然后在烘箱中烘干,制成半固化状态的粘结片。
(3)将粘结片11按设定的张数叠料,并在双面覆以铜箔12,形成半成品,然后,在半成品上开设嵌置槽101,嵌置槽101贯穿半成品的上下表面。
(4)取铜块20,并在铜块20的外周侧面开设环形卡槽21,然后将铜块20嵌入嵌置槽101中,环形卡槽21为沿铜块20轴向间隔排布的多个。
(5)然后对嵌入铜块20的半成品进行加热加压固化,在加热加压的过程中,物料自动填充之环形卡槽21中,使得嵌入的铜块20稳固结合固定,从而得到带有嵌入铜块20的双面线路板。
下面以多个实施例对本发明做进一步详细说明,如下表1所示:
表1:各实施例的配方
Figure BDA0002715880610000081
Figure BDA0002715880610000091
采用实施例1-6配方制备的树脂组合物制作线路板,线路板的性能测试数据见下表2:
表2:各实施例测试性能
Figure BDA0002715880610000092
Figure BDA0002715880610000101
测试方法:
1、玻璃化温度Tg,采用动态机械分析法(DMA)。
2、热分解温度(Td),按照IPC-TM-650中2.4.26所规定的方法进行测定。
3、介电常数,按照IPC-TM-650中2.5.5.9使用平板法,测定1GHz下的介电常数。
4、介质损耗因数角正切,按照IPC-TM-650中2.5.5.9使用平板法,测定1GHz下的介质损耗因数角正切。
5、阻燃性,参照UL94测定标准。
6、剥离强度,按照IPC-TM-650中2.4.8所规定的方法中“热应力”的实验条件,测试金属盖层的剥离强度。
7、热分层时间T-288,按照IPC-TM-650中2.4.24.1所规定的方法进行测定。
8、吸水率,按照IPC-TM-650中2.6.2.1所规定的方法进行测定。
从上表2可见,应用本发明的实施例所获得树脂组合物制得的线路板具有优异的耐热性、更低的介电常数和介质损耗因数,更好的阻燃性及弯曲强度,更低的吸水率。
以上结合具体实施例描述了本发明的技术原理。这些描述只是为了解释本发明的原理,而不能以任何方式解释为对本发明保护范围的限制。基于此处的解释,本领域的技术人员不需要付出创造性的劳动即可联想到本发明的其它具体实施方式,这些方式都将落入本发明的保护范围之内。

Claims (6)

1.一种带有嵌入铜块的双面线路板的制作方法,其特征在于:包括有以下步骤:
(1)将组分A、组分B、组分C、组分D、组分E、组分F、组分G、组分H、组分I、组分J和组分K依次加入装有机溶剂的容器中搅拌溶解、分散,以配制成树脂组合物胶水;各组分的质量份如下:组分A:55-60份,组分B:32-40份,组分C:35-45份,组分D:15-18份,组分E:35-40份,组分F:20-35份,组分G:80-100份,组分H:3-5份;组分I:20-30份,组分J:20-15份,组分K:150-200份,其中,
所述组分A的结构式为:
Figure FDA0002715880600000011
式一中R为含有2个碳原子的烷基结构,R1为含有6-8个碳原子的苯基机构,n为2或3;
所述组份B的结构式为:
Figure FDA0002715880600000021
所述组份C的结构式为:
Figure FDA0002715880600000022
式二中n为5-8的整数;
所述组份D的结构式为:
Figure FDA0002715880600000023
式三中m为2-3的整数;
所述组份E的结构式为:
Figure FDA0002715880600000031
式二中n为2-5的整数;
所述组份F为改性聚苯醚树脂,改性聚苯醚树脂的末端活性基团为烯丙基、乙烯基或苯乙烯基,重均分子量为2000-4000;所述组份G为固化剂;所述组分H为促进剂;所述组分I为有机阻燃剂;所述组分J为交联剂;所述组分K为填料;
(2)将玻纤布浸渍上述树脂组合物胶水中,然后在烘箱中烘干,制成半固化状态的粘结片;
(3)将粘结片按设定的张数叠料,并在双面覆以铜箔,形成半成品,然后,在半成品上开设嵌置槽,嵌置槽贯穿半成品的上下表面;
(4)取铜块,并在铜块的外周侧面开设环形卡槽,然后将铜块嵌入嵌置槽中;
(5)然后对嵌入铜块的半成品进行加热加压固化,在加热加压的过程中,物料自动填充之环形卡槽中,使得嵌入的铜块稳固结合固定,从而得到带有嵌入铜块的双面线路板。
2.如权利要求1所述的一种带有嵌入铜块的双面线路板的制作方法,其特征在于:所述有机溶剂为丙酮、丁酮、环己酮、二甲基甲酰胺、丙二醇甲醚、丙二醇甲醚醋酸酯中的一种或几种混合物。
3.如权利要求1所述的一种带有嵌入铜块的双面线路板的制作方法,其特征在于:所述组份G为酚类固化剂、胺类固化剂、酸类或酸酐固化剂、氰酸酯类中的一种或多种。
4.如权利要求1所述的一种带有嵌入铜块的双面线路板的制作方法,其特征在于:所述组分H为2-甲基咪唑、2-乙基-4-甲基咪唑、2-甲基-4-苯基咪唑中的一种或两种以上的混合物。
5.如权利要求1所述的一种带有嵌入铜块的双面线路板的制作方法,其特征在于:所述组分I为十溴二苯乙烷、十溴二苯醚、溴化聚苯乙烯、乙撑双四溴邻苯二甲酰亚胺和氰尿酸三聚氰胺中的至少一种。
6.如权利要求1所述的一种带有嵌入铜块的双面线路板的制作方法,其特征在于:所述组分J为苯乙烯、二乙烯苯、甲基丙烯酸甲酯和丁二烯中的至少一种。
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