JP6516115B1 - 溶解性・非溶解性粒子含有硬化性樹脂組成物 - Google Patents
溶解性・非溶解性粒子含有硬化性樹脂組成物 Download PDFInfo
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- JP6516115B1 JP6516115B1 JP2018106491A JP2018106491A JP6516115B1 JP 6516115 B1 JP6516115 B1 JP 6516115B1 JP 2018106491 A JP2018106491 A JP 2018106491A JP 2018106491 A JP2018106491 A JP 2018106491A JP 6516115 B1 JP6516115 B1 JP 6516115B1
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- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 description 1
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Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Manufacturing Of Printed Wiring (AREA)
Abstract
Description
溶解性粒子が、炭酸カルシウム、亜硫酸カルシウム、炭酸マグネシウム、及び水酸化マグネシウムの各粒子から成る群より選択される1種以上の酸溶解性粒子、並びに/又はゴム、アクリル樹脂、及びウレタン樹脂の各粒子から成る群より選択される1種以上の酸化剤溶解性粒子であり、
非溶解性粒子が、シリカ、シリコン、アルミナ、窒化アルミ、バライト、及びケイ酸ガラス粉末の各粒子から成る群より選択される1種以上の粒子であることを特徴とする、メッキをする工程を含むプリント配線板の製造方法に用いられる硬化性樹脂組成物、を提供する。
工程A)プリント配線基板上に、本願第1発明又は第2発明の硬化性樹脂組成物から成る樹脂層を積層する工程
工程B)積層した樹脂層を完全硬化する工程
工程C)完全硬化樹脂層を表面研磨する工程
工程D)表面研磨した完全硬化樹脂層を酸性溶液及び/又は酸化剤溶液にて粗化する工程
工程E)メッキをする工程
酸非溶解性粒子としては、無機化合物[ケイ素化合物{シリカ(溶融シリカ、結晶性シリカ等)、シリコン}、アルミニウム化合物{アルミナ(酸化アルミニウム)、窒化アルミ}、バリウム化合物{バライト(硫酸バリウム)}、ケイ酸ガラス粉末]粒子の1種以上である。好ましくは、球状シリカ、球状アルミナ、バライト、ケイ酸ガラス粉末である。
酸化剤溶液としては、上記溶解性粒子において、例示したものが挙げられる。
酸化剤非溶解性粒子としては、酸非溶解性粒子において例示したものの1種以上である。好ましくは、球状シリカ、球状アルミナ、バライトである。
層厚は、例えば10〜100μmである。
<インクの調製>
・調製実施例2〜8、10〜18、調製比較例1〜11、調製参考例1、9
表1、2に示す配合組成に従い、各配合成分を均一に混合し、インク(各調製実施例2〜8、10〜18、調製比較例1〜11、調製参考例1、9)を調製した。
・製造実施例2〜8、10〜18、製造比較例1〜11、製造参考例1、9
プリント配線基板(15cm×15cm×1.6mm)上に、インク(各調製実施例2〜8、10〜18、調製比較例1〜11、調製参考例1、9)をステンレススクリーン(100Mesh)印刷(12×12cm)した。
1.膨潤処理:膨潤剤(メルテックス社製、商標「メルプレートMLB−6001」、2質量%NaOH水溶液)に浸漬(70℃、5分間)させて、塗膜を膨潤させる。
3.酸化処理:酸化剤溶液(メルテックス社製、商標「エンプレートMLB−497」、6質量%過マンガン酸カリウム溶液)に浸漬(80℃、15分間)させて、膨潤した塗膜を酸化分解する。
5.中和処理:酸性溶液(メルテックス社製、商標「エンプレートMLB‐790」、3質量%硫酸ヒドロキシルアミン水溶液)に浸漬(60℃、5分間)させて中和し、過マンガン酸等を除去する。
6.充分に水洗する。
次いで、乾燥機を用い、アニール処理(150℃、60分)を行った。
・粗化後の算術平均粗さ(Ra)及び最大山高さ(Rz)
上記プリント配線板の製造において、粗化後、粗面のRa及びRzを、レーザー顕微鏡(×1000倍)により測定した。
製造したプリント配線板の銅メッキ塗膜に、1cm幅の切り込みを入れ、一端を保持し90°の角度を保ち、50mm/分の速度で引き剥がした時の平均強度を測定した。
製造したプリント配線板を、放置(23℃、60%RH、24時間)した後、半田槽に浸漬(260℃、20秒間)した。
製造したプリント配線板を、放置(23℃、60%RH、24時間)した後、温度サイクル(−40〜150℃×1000サイクル)を行った。
上記プリント配線板の製造と同様にして、無電解銅メッキ迄(まで)の工程を行った。
次いで、メッキレジストを、3%水酸化ナトリウム水溶液にて、溶解・除去した。
次いで、アニール処理(150℃、60分間)を行った。
プリント配線基板としてテフロン板(厚さ5mm)を用い、研磨後の塗膜厚さが約20μmである以外は、上記プリント配線板の製造と同様にして、研磨迄の工程を行った。このプリント配線基板を、TMA試料とした。
*1)架橋密度低下に因る。
*2)銅メッキが、浮いた。
*3)塗膜内部に、クラックが発生した。
*4)アニール処理において、銅メッキの膨れが発生したため、測定・評価できず。
*5)塗膜の粗面に、大きな凹みが生じた。そのため、エッチング後でも、不要な銅メッキが、その窪みに残存した。
2 回路幅
3 残存した銅メッキ
4 プリント配線基板
5 樹脂層
6 表層上部
7 溶解性粒子
8 表層下部
9 非溶解性粒子
10 中・底層部
Claims (5)
- エポキシ樹脂100質量部に対し、硬化剤4〜16質量部、平均粒径2〜3μmの溶解性粒子30〜180質量部、平均粒径12〜18μmの非溶解性粒子30〜150質量部を含有する硬化性樹脂組成物であって、
溶解性粒子が、炭酸カルシウム、亜硫酸カルシウム、炭酸マグネシウム、及び水酸化マグネシウムの各粒子から成る群より選択される1種以上の酸溶解性粒子、並びに/又はゴム、アクリル樹脂、及びウレタン樹脂の各粒子から成る群より選択される1種以上の酸化剤溶解性粒子であり、
非溶解性粒子が、シリカ、シリコン、アルミナ、窒化アルミ、バライト、及びケイ酸ガラス粉末の各粒子から成る群より選択される1種以上の粒子であることを特徴とする、メッキをする工程を含むプリント配線板の製造方法に用いられる硬化性樹脂組成物。 - 溶解性粒子の平均粒径が2〜2.5μmであり、非溶解性粒子の平均粒径が13〜15μmである、ことを特徴とする請求項1に記載の硬化性樹脂組成物。
- 下記工程A〜Eを含む、ことを特徴とするプリント配線板の製造方法。
工程A)プリント配線基板上に、請求項1又は2に記載の硬化性樹脂組成物から成る樹脂層を積層する工程
工程B)積層した樹脂層を完全硬化する工程
工程C)完全硬化樹脂層を表面研磨する工程
工程D)表面研磨した完全硬化樹脂層を酸性溶液及び/又は酸化剤溶液にて粗化する工程
工程E)メッキをする工程 - 請求項3に記載のプリント配線板の製造方法に用いられる、請求項1又は2に記載の硬化性樹脂組成物。
- 請求項1、2、又は4の何れかに記載の硬化性樹脂組成物から成る硬化樹脂層、及びメッキ層を有し、硬化樹脂層の少なくとも片面が酸性溶液及び/又は酸化剤溶液にて粗化されており、この粗面上にメッキ層が積層されている、ことを特徴とするプリント配線板。
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