JPS6063155A - Laminated board for electricity - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 〔技術分野〕 本発明は電子機器用、電気機器用、計算機用、産！＆機
器用に用いられる電気用積層板に関するものである。[Detailed Description of the Invention] [Technical Field] The present invention is applicable to electronic equipment, electrical equipment, computers, industrial equipment, etc. & relates to electrical laminates used for equipment.

〔背景技術〕[Background technology]

従来、■電気用積層板には基材に対する樹脂の含浸性を
向上させるためアルキルフェノール樹脂、メラミンフェ
ノール樹脂、フェノール樹脂、メラミン樹脂、エポキシ
樹脂等の低粘度、低分子量樹脂を１次含浸用や含浸性向
上涙金用に用いているが電気用積層板を加工する段階で
電気用積層板を加熱した際、反り、ネジレ、寸法変化率
が大きくなる原因となっていた＠ 〔発明の目的Ｊ 本発明の目的とするところは、電気用積層板加工時の反
り、ネジレ、寸法変化率の少ない電気用積層板を提供す
ることにある。Conventionally, for electrical laminates, low viscosity, low molecular weight resins such as alkylphenol resins, melamine phenol resins, phenol resins, melamine resins, and epoxy resins were used for primary impregnation or impregnation in order to improve the impregnation of the resin into the base material. It is used for the purpose of improving laminar properties, but when the electrical laminate is heated during processing, it causes warping, twisting, and dimensional change rate to increase. An object of the invention is to provide an electrical laminate that exhibits less warping, twisting, and dimensional change during processing of the electrical laminate.

〔発明の開示〕[Disclosure of the invention]

本発明は樹脂含浸基材を所要枚数重ね更に必要に応じて
その上面及び又は下面に金Ｊｌ？！箔を戦龜した積層体
を積層成形してなる電気用積層板に＄いて、樹脂塗膜の
硬化時歪を歪計で喫１定した時の歪が５０　ｋｇｆ　／
−以下の樹脂を用いた仁とを特徴とする電気用積層板で
、樹脂の硬化時歪をＳｏ　ｋｇｆ’／ｄ以下にすること
により樹脂の硬化歪に起因する電気用積層板加工時の反
り、ネジレ、寸法変化率を大巾に減少せしめることがで
きたもので、以下本発明の詳細な説明する。本発明に用
いる樹脂は、フェノール樹脂、クレゾール樹脂、エポキ
シ樹脂、不飽和ポリエステル樹脂、メラミン樹脂、ポリ
イミド、ポリブタジェン、ポリアミド、ポリアミドイミ
ド等の熱硬化性樹脂の単独、変佳物、混合物等が用いら
れ必要に応じて粘度調整に水、メチルアルコール、アセ
トン、シクロヘキサノン、スチレン等の溶媒を添加した
ものであるが樹脂塗膜の硬化時歪を歪計で　定した時の
歪が５９ｋｇｆ／−以下、好ましくはａｏｋｇｒ／ａＡ
以下であることが望ましい。即ち５０　ｋｇｆ’　／　
ａｄをこえると電気用積層板の加工時の反り、ネジレ、
寸法変化率が大きくなるからである。歪は黄銅薄板（厚
さ０．１１１１％ヤング率７００，０００　Ｍ　）を内
部応力耕１定用試片とし、試片片面中央部に抵抗線歪計
を貼り、その裏面に樹脂ワニスを塗装し、内部応力によ
る試片のタワミを一気的にとりだせるようにしたもので
ある。電気用積層板の基材としては、ガラス、アスベス
ト等の無械繊維やポリエステル、ポリアミド、ポリビニ
ルアルコール、アクリル等の有機合成繊維や木方帛等の
天然繊維からなる織布、不織布）マット或は紙又はこれ
らの組合せ基材等である。金属箔としては銅、ニッケル
、アルミニウム、ステンレス朗１鉄等の金属箔そのまま
或は必要に応じて表面処理や接着剤層を設けて樹脂含浸
茶杓との接着力を向上するようにしたものである。積層
成形としては油圧式多段プレス方法、連続式加圧方法、
連続式無圧方法等任意であり特に限定するものではない
。In the present invention, a required number of resin-impregnated base materials are stacked, and if necessary, gold Jl. ! An electrical laminate made by laminating and molding a laminate filled with foil has a strain of 50 kgf/1 when the resin coating is cured using a strain meter.
- An electrical laminate using the following resin, and by reducing the strain during curing of the resin to less than So kgf'/d, warpage during processing of the electrical laminate due to the curing strain of the resin is reduced. The present invention will be described in detail below. The resin used in the present invention may be a thermosetting resin such as phenol resin, cresol resin, epoxy resin, unsaturated polyester resin, melamine resin, polyimide, polybutadiene, polyamide, polyamide-imide, etc. alone, in a modified form, or in a mixture. If necessary, a solvent such as water, methyl alcohol, acetone, cyclohexanone, or styrene is added to adjust the viscosity, but the strain when the resin coating is cured using a strain meter is preferably 59 kgf/- or less. is aokgr/aA
The following is desirable. That is, 50 kgf'/
If the temperature exceeds ad, warping, twisting, and
This is because the dimensional change rate increases. Strain was measured by using a thin brass plate (thickness 0.1111% Young's modulus 700,000 M) as a specimen for internal stress plating, a resistance wire strain meter attached to the center of the specimen surface, and a resin varnish applied to the back surface. , the deflection of the specimen due to internal stress can be removed all at once. The base material for electrical laminates can be woven fabrics (mats) or non-woven fabrics (mats) made of amorphous fibers such as glass and asbestos, organic synthetic fibers such as polyester, polyamide, polyvinyl alcohol, and acrylic, and natural fibers such as wood cloth. Paper or a combination of these materials, etc. The metal foil may be made of copper, nickel, aluminum, stainless steel, etc., or it may be surface treated or provided with an adhesive layer as necessary to improve its adhesion to the resin-impregnated tea scoop. . For lamination molding, there are hydraulic multi-stage press method, continuous press method,
A continuous pressureless method is optional and is not particularly limited.

以下本発明を実施例にもとすいて説明する。The present invention will be explained below using examples.

実施例１乃至３と比較例１ クレゾール１モルに対しホルムアルデヒド１．４モルを
３７％ホルマリンで加えてからアンモニア水でｐＨ９，
５に謔整し実施例１については９５℃で３００分間反応
せ、実施例２については９５℃で４００分間反応せ、実
施例２については９５℃で４００分間反応せ、実施例３
については９５℃で４５分間反応させ、比較例１につい
ては８０Ｃで３００分間反応せ、夫々水で樹脂ｆｉ５０
重ｆｆｉ％（以下単に％と記す）に調整してクレゾール
樹脂ワニスを得た。次に黄銅薄板（厚さ０．１　ｔｅａ
　、ヤング率７００．０００製）より８０　Ｘ　１０　
ｍの帯状試片を切り出し内部応力　走用試片とした該試
片の片面中央部会こ抵抗線歪計（東洋　器株式会社製、
品番１％Ｄ　−６Ｅ−Ｂ　）を貼り、その裏面５０　Ｘ
　１０　ｔｘ　に上記クレゾール樹脂ワニスを塗装し１
５０℃で１０分間硬化させた時の歪を内部応力による試
片のタワミとして電気的にとりだした結果は第１表のよ
うであった。Examples 1 to 3 and Comparative Example 1 1.4 mol of formaldehyde was added in 37% formalin to 1 mol of cresol, and then adjusted to pH 9 with aqueous ammonia.
Example 1 was reacted at 95°C for 300 minutes, Example 2 was reacted at 95°C for 400 minutes, Example 2 was reacted at 95°C for 400 minutes, and Example 3 was reacted at 95°C for 400 minutes.
For Comparative Example 1, the reaction was performed at 95°C for 45 minutes, and for Comparative Example 1, the reaction was performed at 80°C for 300 minutes.
A cresol resin varnish was obtained by adjusting the weight to ffi% (hereinafter simply referred to as %). Next, a thin brass plate (thickness 0.1 tea)
, Young's modulus 700.000) from 80 x 10
A strip-shaped test piece of 300 m in diameter was cut out and used as a test piece for internal stress testing.
Paste product number 1%D-6E-B) and paste 50X on the back side.
10 tx was coated with the above cresol resin varnish.
Table 1 shows the results of electrically determining the strain caused by internal stress during curing at 50°C for 10 minutes.

第　１　表 次に実施例１乃至３と比較例１の樹脂ワニスを厚さ０．
２　＊、＋のクラフト紙に付着量が夫々１５％になるよ
うに１次含浸させた後、樹脂量５０％で硬化時の樹脂型
が１０　ｋｇｆ　／−のクレゾール松脂ワニスを全体付
着量か夫々５０％　になるよ・うに２次含浸させた後、
加熱乾燥して樹脂金ｔｇ：茶杓を得、次に樹脂含浸基材
６枚を重ねた上下面に接着剤付銅箔を夫々軌籠した積層
体を１６０℃、１００′Ｍで６０分間積層成形して電気
用ｙａ層板を得た。Table 1 Next, the resin varnishes of Examples 1 to 3 and Comparative Example 1 were applied to a thickness of 0.
After first impregnating 2 * and + kraft papers so that the adhesion amount is 15%, respectively, cresol pine resin varnish with a resin amount of 50% and a resin type of 10 kgf/- when cured is applied to the entire adhesion amount. After secondary impregnation to 50%,
A resin gold tg: tea scoop was obtained by heating and drying, and then a laminate of six resin-impregnated substrates stacked and adhesive-coated copper foil placed on the top and bottom surfaces, respectively, was laminated at 160°C and 100'M for 60 minutes. An electrical ya laminate was obtained.

実施例４ 実施例３の１次含浸用クレゾール樹脂ワニスを厚さ０．
２ｍのクラフト紙に付着量が５０％　になるＪうに含浸
乾燥した樹脂含浸基′＠６枚の上下面をこ接着剤付鉄箔
を夫々載置した４１１＠体を用いた以外は実施例３と同
様に処理して電気用積層板を得た実施例５ 実施例１の１次含浸用クレゾール樹脂ワニスと２次含浸
用クレゾール樹脂ワニスを等量混合した松脂ワニスの硬
化時の樹脂型は２８．７　ｋｇｆ　／−であり、該ワニ
スを厚さ０．２ｍのクラフト紙に付着量が５０％　にな
るように含浸乾燥した樹脂含浸茶杓６枚の上下面に接を
割付銀箔を夫々載置した積層体を用いた以外は実施例１
と同様に処理して電気用積層板を宥た。Example 4 The cresol resin varnish for primary impregnation of Example 3 was applied to a thickness of 0.
Example 3 except that 411@ bodies were used, each of which had adhesive-coated iron foil placed on the upper and lower surfaces of 6 sheets of resin-impregnated base resin impregnated with dried sea urchin so that the adhesion amount was 50% on 2 m of kraft paper. Example 5 An electrical laminate was obtained by processing in the same manner as in Example 5. The resin mold when cured of the pine resin varnish prepared by mixing equal amounts of the cresol resin varnish for primary impregnation and the cresol resin varnish for secondary impregnation of Example 1 was 28. .7 kgf/-, and 0.2 m thick kraft paper was impregnated with the varnish so that the adhesion amount was 50%. Six resin-impregnated tea scoops were dried, and silver foil was placed on each of the upper and lower surfaces of the resin-impregnated tea scoops. Example 1 except that a laminate was used
The electrical laminate was treated in the same manner as above.

比較例２ 比較例１の１次含浸用クレゾール樹脂ワニスを厚さくＬ
　２　＊＊＊のクラフト紙書こ付着量が５０％　になる
ように含浸乾燥した樹脂含浸基材６枚の上下面に接着剤
付銅箔を夫々載置した積層体を用いた以外は比較例１と
同様に処理して電気用積層板を得た〔発明の効果〕 実施例１乃至５と比較例１及び２の電気用積層板の反り
１ネジレ１寸法変化率は第２表に示すように本発明の電
気用積層板の性能はよく、本発明の電気用積層板の優れ
ていることを確認した。Comparative Example 2 The cresol resin varnish for primary impregnation of Comparative Example 1 was applied to a thickness of L.
Comparative Example 1 except that a laminate was used in which adhesive-coated copper foil was placed on the upper and lower surfaces of six resin-impregnated substrates that had been impregnated and dried so that the adhesion amount of 2 **** kraft paper was 50%. Electrical laminates were obtained by processing in the same manner as [Effect of the invention] The warpage, twist, and dimensional change rate of the electrical laminates of Examples 1 to 5 and Comparative Examples 1 and 2 were as shown in Table 2. The performance of the electrical laminate of the present invention was good, confirming that the electrical laminate of the present invention is superior.

第　２　表 来　寸法は５００　Ｘ　４１０　ｗｍ　ｓ　１２０℃Ｘ
　１５分処理後特許出願人 松下電工株式会社 代理人弁理士　竹　元　敏　丸 （ほか２名）2nd appearance dimensions are 500 x 410 wm s 120℃ x
After 15 minutes of processing Patent applicant Matsushita Electric Works Co., Ltd. Representative Patent attorney Toshimaru Takemoto (and 2 others)

Claims (1)

【特許請求の範囲】[Claims] （１）　樹脂含浸基材を所要枚数重ね更に必要に応じて
その上面及び又は下面に金属箔を載置°した積層体を積
層成形してなる電気用積層板において、樹脂塗膜の硬化
時歪を歪計で膚ｊ定した時の歪がｓｏ　ｋｇｆ　／ｃａ
ｌ以下の樹脂を用いたことを特徴とする電気用積層板。(1) In an electrical laminate formed by laminating and molding a laminate in which a required number of resin-impregnated substrates are laminated and metal foil is placed on the upper and/or lower surfaces as necessary, the resin coating film is strained when cured. The strain when measured with a strain meter is so kgf/ca
An electrical laminate characterized by using a resin of 1 or less.