TWI710596B - 一種樹脂組合物、包含其的預浸料以及層壓板和印刷電路板 - Google Patents
一種樹脂組合物、包含其的預浸料以及層壓板和印刷電路板 Download PDFInfo
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Abstract
本發明提供了一種樹脂組合物以及包含其的預浸料、層壓板和印刷電路板。該樹脂組合物包含:48-54重量份的無鹵環氧樹脂;16-31重量份的由式(I)表示的化合物,其中n為2-15,Ac表示乙醯基;和15-32重量份的氰酸酯樹脂。採用該樹脂組合物製成的預浸料、層壓板和印刷電路板具有低熱膨脹係數。
Description
本發明屬於印刷電路板技術領域,具體涉及一種樹脂組合物和包含其的預浸料以及層壓板和印刷電路板。
近年來,資訊通訊設備變得具有更高性能、更多功能並且可以在網路中工作。為了高速傳輸及處理大容量資訊,操作信號趨向於高頻化。同時,為了滿足各類電子產品的發展要求,電路板向著更多層、更高佈線密度的方向發展。這就要求基板材料不僅具有良好的介電常數和介質損耗因數來滿足信號高頻傳輸的需要,而且要求其具有良好的耐熱性來滿足多層印刷電路板可靠性的需求。特別地,基板材料需要有儘量低的熱膨脹係數。
樹脂預浸料常在印刷電路板中作為基板材料。為此,已經開發了一些樹脂組合物,其中採用氰酸酯和活性酯作為複合固化劑固化聯苯型酚醛環氧樹脂、亞芳烷基環氧樹脂或萘酚環氧樹脂。不過,上述樹脂組合物的熱膨脹係數(CTE)仍有待提高。
在一個方面,本發明提供一種樹脂組合物,其特徵在於,所述樹脂組合物包含:
無鹵環氧樹脂:48-54重量份;
由式(I)表示的化合物:16-31重量份,(I)
其中n為2-15,Ac表示乙醯基;和
氰酸酯樹脂:15-32重量份。
可選地,所述無鹵環氧樹脂選自由以下各項組成的組:聯苯酚醛環氧樹脂、DCPD型酚醛環氧樹脂、亞烷基酚醛環氧樹脂、雙酚A型酚醛環氧樹脂、雙酚AP型環氧樹脂、雙酚TMC型環氧樹脂、和它們的組合。
可選地,所述樹脂組合物包含16-22重量份的所述由式(I)表示的化合物,25-32重量份的所述氰酸酯樹脂。
可選地,所述氰酸酯樹脂選自由以下各項組成的組:雙酚A型氰酸酯樹脂、雙酚F型氰酸酯樹脂、雙環戊二烯型氰酸酯樹脂、苯酚酚醛型氰酸酯樹脂、和它們的組合。
可選地,所述樹脂組合物還包括固化促進劑。
可選地,所述樹脂組合物還包括無鹵阻燃劑。
可選地,所述樹脂組合物還包含填料。
在另一個方面,本發明提供一種預浸料,所述預浸料是通過對增強材料浸漬或塗佈根據上述樹脂組合物並將其半固化得到的。
在另一個方面,本發明提供一種層壓板,其包含至少一張如上述的預浸料。
在另一個方面,本發明提供一種印刷電路板,其包含至少一張如上所述的預浸料或層壓板。
本發明的目的在於提供一種樹脂組合物。使用該樹脂組合物製備的預浸料、層壓板和印刷電路板,具有低熱膨脹係數。
本發明的發明人出人意料地發現,使用由式(I)表示的化合物代替活性酯樹脂與氰酸酯一起作為複合固化劑,與無鹵環氧樹脂組合,可以得到具有低的熱膨脹係數的環氧樹脂體系。
本發明利用上述三種必要組分之間的相互配合以及相互協同促進作用,得到了如上的樹脂組合物。採用該樹脂組合物製成的預浸料、層壓板以及印刷電路板,具有低熱膨脹係數。
無鹵環氧樹脂成分中是不含鹵素的環氧樹脂。本發明對無鹵環氧樹脂的種類沒有特別的限定。
無鹵環氧樹脂的量為48-54重量份,例如48重量份、49重量份、50重量份、51重量份、53重量份或54重量份。
優選地,所述無鹵環氧樹脂選自由以下各項組成的組:聯苯酚醛環氧樹脂、DCPD型酚醛環氧樹脂、亞烷基酚醛環氧樹脂、雙酚A型酚醛環氧樹脂、雙酚AP型環氧樹脂、雙酚TMC型環氧樹脂、和它們的組合。這些無鹵環氧樹脂的優點在於具有低的熱膨脹係數。
優選地,由式(I)表示的化合物可以為16-22重量份,例如16重量份、18重量份、20重量份或22重量份;所述氰酸酯樹脂可以為25-32重量份,例如25重量份、26重量份、28重量份、30重量份或32重量份。選用以上組分可以很好地降低無鹵環氧樹脂組合物的熱膨脹係數。
由式(I)表示的化合物的聚合度n為2-15,n可以為例如3、7、11或15。在本發明中,組合物中由式(I)表示的化合物中n可以不為整數,其表示由式(I)表示的化合物的平均聚合度。例如,當組合物中的由式(I)表示的化合物中的一半數量具有3個重複單元且另一半數量具有4個重複單元時,可以認為n=3.5。當平均聚合度小於2時,組合物固化後熱學性能差。而當平均聚合度大於15時,組合物的浸潤性差,影響層壓板或印刷電路板的性能。式(I)表示的化合物的數均分子量相應地為約1300至7800。
優選地,所述氰酸酯樹脂選自由以下各項組成的組:雙酚A型氰酸酯樹脂、雙酚F型氰酸酯樹脂、雙環戊二烯型氰酸酯樹脂、苯酚酚醛型氰酸酯樹脂、和它們的組合。選用這些氰酸酯樹脂的優點在於具有更低的熱膨脹係數。
優選地,所述樹脂組合物還可進一步包括固化促進劑,其使樹脂固化並加快樹脂固化速度。以無鹵環氧樹脂、由式(I)表示的化合物和氰酸酯樹脂的總量為100重量份計,所述固化促進劑的量為0.05-1重量份,例如0.08重量份、0.1重量份、0.15重量份、0.2重量份、0.25重量份、0.3重量份、0.35重量份、0.4重量份、0.45重量份、0.5重量份、0.55重量、0.60重量份、0.65重量份、0.7重量份、0.75重量份、0.8重量份、0.85重量份、0.9重量份或0.95重量份。
優選地,所述固化促進劑選自由以下各項組成的組:異辛酸鋅、4-二甲氨基吡啶、2-甲基咪唑、2-乙基4-甲基咪唑、2-苯基咪唑、和它們的組合。
優選地,如有需要,所述環氧樹脂組合物還包括阻燃劑,使環氧樹脂樹脂組合物具有阻燃特性,符合UL 94 V-0要求。對視需要而添加的阻燃劑並無特別限定。優選地,該阻燃劑為無鹵阻燃劑。
阻燃劑的量根據固化產物達到UL 94 V-0級別要求而定,並無特別的限定。優選地,以無鹵環氧樹脂、由式(I)表示的化合物和氰酸酯樹脂的總量為100重量份計,所述阻燃劑的量為5-50重量份,例如5重量份、10重量份、15重量份、25重量份、30重量份、35重量份、40重量份或45重量份。
優選地,所述無鹵阻燃劑選自由以下各項組成的組:三(2,6-二甲基苯基)膦、10-(2,5-二羥基苯基)-9,10-二氫-9-氧雜-10-膦菲-10-氧化物、2,6-二(2,6-二甲基苯基)膦基苯、10-苯基-9,10-二氫-9-氧雜-10-膦菲-10-氧化物、苯氧基膦腈化合物、硼酸鋅、氮磷系膨脹型、有機聚合物無鹵阻燃劑、含磷酚醛樹脂、和它們的組合。
優選地,如有需要,所述樹脂組合物還包含填料,所述填料為有機填料和/或無機填料,其主要用來調整環氧樹脂組合物的一些物性效果,如進一步降低熱膨脹係數(CTE)、降低吸水率和提高熱導率等。
填料的添加量並無特別限定。優選地,以無鹵環氧樹脂、由式(I)表示的化合物和氰酸酯樹脂的總量為100重量份計,所述填料的量為100重量份以下,優選50重量份以下。所述填料的量例如為0.5重量份、1重量份、5重量份、10重量份、15重量份、20重量份、25重量份、30重量份、35重量份、40重量份、45重量份、50重量份、55重量份、60重量份、65重量份、70重量份、75重量份、80重量份、85重量份、90重量份或95重量份。
優選地,所述無機填料選自由以下各項組成的組:熔融二氧化矽、結晶型二氧化矽、球型二氧化矽、空心二氧化矽、氫氧化鋁、氧化鋁、滑石粉、氮化鋁、氮化硼、碳化矽、硫酸鋇、鈦酸鋇、鈦酸鍶、碳酸鈣、矽酸鈣、雲母、玻璃纖維粉、和它們的組合。它們的組合例如熔融二氧化矽和結晶型二氧化矽的混合物,球型二氧化矽和空心二氧化矽的混合物,氫氧化鋁和氧化鋁的混合物,滑石粉和氮化鋁的混合物,氮化硼和碳化矽的混合物,硫酸鋇和鈦酸鋇的混合物,鈦酸鍶和碳酸鈣的混合物,矽酸鈣、雲母和玻璃纖維粉的混合物,熔融二氧化矽、結晶型二氧化矽和球型二氧化矽的混合物,空心二氧化矽、氫氧化鋁和氧化鋁的混合物,滑石粉、氮化鋁和氮化硼的混合物,碳化矽、硫酸鋇和鈦酸鋇的混合物,鈦酸鍶、碳酸鈣、矽酸鈣、雲母和玻璃纖維粉的混合物。
優選地,所述有機填料選自由以下各項組成的組:聚四氟乙烯粉末、聚苯硫醚、聚醚碸粉末、和它們的組合。它們的組合例如聚四氟乙烯粉末和聚苯硫醚的混合物,聚醚碸粉末和聚四氟乙烯粉末的混合物,聚苯硫醚和聚醚碸粉末的混合物,聚四氟乙烯粉末、聚苯硫醚和聚醚碸粉末的混合物。
優選地,所述填料為二氧化矽,填料的粒徑中度值為0.1-15μm,優選填料的粒徑中度值為0.1-10μm。
本發明所述的“包含”,意指其除所述組分外,還可以包含其他組分,這些其他組分賦予所述樹脂組合物不同的特性。除此之外,本發明所述的“包含”,還可以替換為封閉式的“為”或“由……組成”。
例如,所述樹脂組合物還可以含有各種添加劑,作為具體例,可以舉出抗氧劑、熱穩定劑、抗靜電劑、紫外線吸收劑、顏料、著色劑或潤滑劑等。這些各種添加劑可以單獨使用,也可以兩種或者兩種以上混合使用。
本發明的樹脂組合物的常規製作方法是:取一容器,先將固體組分放入,然後加入溶劑,攪拌直至完全溶解後,再加入液體樹脂、填料、阻燃劑和固化促進劑,繼續攪拌均勻即可,最後用溶劑調整液體固含量至60%-80%而製成膠液。
本發明的目的之二在於提供一種預浸料,其包含增強材料及通過含浸乾燥後附著其上的如上所述的環氧樹脂組合物。
示例性的增強材料如無紡織物和/或其他織物,例如天然纖維、有機合成纖維以及無機纖維。
使用該膠液含浸增強材料如玻璃布等織物或有機織物,將含浸好的增強材料在155-170℃的烘箱中加熱乾燥5-10分鐘即可得到預浸料。
本發明的目的之三在於提供一種層壓板,其包含至少一張如上所述的預浸料。
本發明的目的之四在於提供一種印刷電路板,其包含至少一張如上所述的預浸料或層壓板。
本發明利用上述三種必要組分之間的相互配合以及相互協同促進作用,得到了如上的樹脂組合物。採用該樹脂組合物製成的預浸料、層壓板以及印刷電路板,具有低熱膨脹係數。
下面通過具體實施例來進一步說明本發明的技術方案。
根據上述所製成的樹脂組合物覆金屬箔層壓板,測試其熱膨脹係數,如下述實施例加以詳細說明與描述,其中有機樹脂的重量份按有機固形物重量份計。
本發明實施例中所用列舉的材料具體如下:
KES-7695M75:含有DCPD結構的環氧樹脂(得自KOLON)。
NC-3000H:聯苯型酚醛環氧樹脂(得自日本化藥)。
E15-152T:由式(I)表示的化合物(得自ICL),其中n為約3.0。
HM1100:膦酸酯聚合物(得自FRX Polymers公司)。
HPC-8000-65T:活性酯樹脂(得自日本DIC)。
CE01PS:雙酚A型氰酸酯樹脂(得自揚州天啟)。
PT60S:酚醛型氰酸酯樹脂(得自LONZA)。
DMAP:固化促進劑,4-二甲氨基吡啶(得自廣榮化學)。
異辛酸鋅:固化促進劑(得自阿法埃莎)。
熱膨脹係數(CTE)的測試方法如下:根據熱機械分析儀(TMA),按照IPC-TM-650 2.4.24.6所規定的TMA方法進行測定。
實施例1
取一容器,加入54重量份的環氧樹脂KES-7695M75和31重量份的由式(I)表示的化合物E15-152T,加入適量的甲基乙基酮(MEK)和二甲基甲醯胺(DMF)攪拌至完全溶解,隨後加入15重量份的氰酸酯樹脂CE01PS、提前溶解好的固化促進劑DMAP和異辛酸鋅,繼續攪拌均勻,最後用溶劑調整液體固含量至70%,從而製成膠液。用玻璃纖維布浸漬上述膠液,並控制至適當厚度,然後烘乾除去溶劑得到預浸料。使用6張所製得的預浸料相互疊合,在其兩側分別壓覆一張銅箔,放進熱壓機中固化製成所述的環氧樹脂覆銅箔層壓板。物性數據如表1所示。
實施列2-7
製作工藝和實施例1相同,配方組成及其物性指標如表1所示。
比較例1-7
製作工藝與實施例1相同,配方組成及其物性指標如表1所示。
註:表中皆以固體組分重量份計。
實施例1-7相比於比較例1-3,其各組分含量均在本發明限定的範圍內,特定含量比例的環氧樹脂、氰酸酯與由式(I)表示的化合物具有協同作用,具有更優的熱膨脹係數。實施例4-7的組分含量均在本發明優選的範圍內,相比於其他實施例具有更低的熱膨脹係數。
比較例4-7不使用具有式(I)表示的化合物,也能實現固化和阻燃的作用,但其熱膨脹係數最高可達到3.7%。
因此,本發明的樹脂組合物提供了具有低熱膨脹係數的包含氰酸酯的環氧樹脂。相應地,本發明的預浸料、層壓板和印刷電路板也具有低熱膨脹係數。
顯然,本領域的技術人員可以對本發明實施例進行各種改動和變型而不脫離本發明的精神和範圍。這樣,倘若本發明的這些修改和變型屬於本發明申請專利範圍及其等同技術的範圍之內,則本發明也意圖包含這些改動和變型在內。
Claims (9)
- 如請求項1所述的樹脂組合物,其中所述無鹵環氧樹脂選自由以下各項組成的組:聯苯酚醛環氧樹脂、DCPD型酚醛環氧樹脂、亞烷基酚醛環氧樹脂、雙酚A型酚醛環氧樹脂、雙酚AP型環氧樹脂、雙酚TMC型環氧樹脂、和它們的組合。
- 如請求項1所述的樹脂組合物,其中所述樹脂組合物包含16-22重量份的所述由式(I)表示的化合物,25-32重量份的所述氰酸酯樹脂。
- 如請求項1所述的樹脂組合物,所述樹脂組合物還包括固化促進劑。
- 如請求項1所述的樹脂組合物,所述樹脂組合物還包括無鹵阻燃劑。
- 如請求項1所述的樹脂組合物,所述樹脂組合物還包含填料。
- 一種預浸料,所述預浸料是通過對增強材料浸漬或塗佈根據請求項1所述的樹脂組合物並將其半固化得到的。
- 一種層壓板,所述層壓板包含至少一張如請求項7所述的預浸料。
- 一種印刷電路板,所述印刷電路板包含:至少一張如請求項7所述的預浸料,或至少一張如請求項8所述的層壓板。
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JP6808945B2 (ja) * | 2016-02-19 | 2021-01-06 | 昭和電工マテリアルズ株式会社 | 多層プリント配線板用の接着フィルム |
CN108164685B (zh) * | 2016-12-07 | 2019-08-27 | 广东生益科技股份有限公司 | 一种热固性树脂组合物 |
CN108864410B (zh) * | 2017-05-08 | 2021-05-11 | 广东生益科技股份有限公司 | 含有tcpd结构的环氧树脂、环氧树脂组合物、预浸料、层压板和印刷电路板 |
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2019
- 2019-03-18 CN CN201910205606.1A patent/CN110016206B/zh active Active
- 2019-04-08 US US17/437,564 patent/US20220135788A1/en active Pending
- 2019-04-08 FI FIEP19920384.5T patent/FI3943548T3/fi active
- 2019-04-08 EP EP19920384.5A patent/EP3943548B1/en active Active
- 2019-04-08 KR KR1020217028463A patent/KR102623336B1/ko active IP Right Grant
- 2019-04-08 JP JP2021552166A patent/JP7270057B2/ja active Active
- 2019-04-08 WO PCT/CN2019/081744 patent/WO2020186572A1/zh unknown
- 2019-06-06 TW TW108119832A patent/TWI710596B/zh active
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Publication number | Priority date | Publication date | Assignee | Title |
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TW201816006A (zh) * | 2016-08-11 | 2018-05-01 | 美商Icl Ip美國股份有限公司 | 可固化環氧組成物 |
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US20220135788A1 (en) | 2022-05-05 |
EP3943548A4 (en) | 2023-01-04 |
CN110016206B (zh) | 2020-10-27 |
WO2020186572A1 (zh) | 2020-09-24 |
TW201936777A (zh) | 2019-09-16 |
FI3943548T3 (fi) | 2024-02-21 |
CN110016206A (zh) | 2019-07-16 |
JP2022522845A (ja) | 2022-04-20 |
JP7270057B2 (ja) | 2023-05-09 |
EP3943548B1 (en) | 2024-01-10 |
KR102623336B1 (ko) | 2024-01-09 |
KR20210125053A (ko) | 2021-10-15 |
EP3943548A1 (en) | 2022-01-26 |
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