JPH04290739A - Laminated plate and manufacture thereof - Google Patents
Laminated plate and manufacture thereofInfo
- Publication number
- JPH04290739A JPH04290739A JP5526191A JP5526191A JPH04290739A JP H04290739 A JPH04290739 A JP H04290739A JP 5526191 A JP5526191 A JP 5526191A JP 5526191 A JP5526191 A JP 5526191A JP H04290739 A JPH04290739 A JP H04290739A
- Authority
- JP
- Japan
- Prior art keywords
- glass fiber
- nonwoven fabric
- fiber nonwoven
- resin
- laminate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 50
- 239000003365 glass fiber Substances 0.000 claims abstract description 47
- 239000011347 resin Substances 0.000 claims abstract description 39
- 229920005989 resin Polymers 0.000 claims abstract description 39
- 239000003822 epoxy resin Substances 0.000 claims abstract description 11
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 11
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 10
- 239000012792 core layer Substances 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 230000009477 glass transition Effects 0.000 claims abstract description 6
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 239000011256 inorganic filler Substances 0.000 claims description 31
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 31
- 230000000717 retained effect Effects 0.000 claims description 15
- 239000006185 dispersion Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 239000011521 glass Substances 0.000 claims description 8
- 229920013820 alkyl cellulose Polymers 0.000 claims description 7
- 239000002344 surface layer Substances 0.000 claims description 4
- 239000010410 layer Substances 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 3
- 239000002759 woven fabric Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 238000003475 lamination Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 15
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 abstract description 12
- 239000000203 mixture Substances 0.000 abstract description 4
- 229930185605 Bisphenol Natural products 0.000 abstract description 2
- 239000001856 Ethyl cellulose Substances 0.000 abstract description 2
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 abstract description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 abstract description 2
- 229920001249 ethyl cellulose Polymers 0.000 abstract description 2
- 235000019325 ethyl cellulose Nutrition 0.000 abstract description 2
- 229920003986 novolac Polymers 0.000 abstract 2
- 239000005011 phenolic resin Substances 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 9
- 239000002966 varnish Substances 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 239000011889 copper foil Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、プリント配線板等の絶
縁基板として適した積層板およびその製造法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminate suitable as an insulating substrate such as a printed wiring board and a method for manufacturing the same.
【０００２】0002
【従来の技術】ガラス繊維不織布を基材とする積層板は
、この基材にエポキシ樹脂などを含浸して、積層成形し
て得られ、打ち抜き加工性がよく、電気絶縁用途に使用
されている。従来用いられているガラス繊維不織布は、
ガラス短繊維を水中に分散させ抄紙機で抄造する湿式法
で製造されたものが殆どである。ガラス繊維自体では、
互いに絡み合う性質がなく熱融着させるのも困難である
ため、バインダを用いて繊維同士を結着している。
バインダとしては、アクリル酸樹脂、酢酸ビニル樹脂、
エポキシ樹脂などが用いられ、これらバインダを、抄造
したガラス繊維不織布にスプレーする。また、ガラス繊
維不織布に含浸させる熱硬化性樹脂としては、ガラス転
移温度（Ｔｇ）が８０〜１３０℃のものが使用されてい
る。[Prior Art] Laminated boards based on glass fiber nonwoven fabric are obtained by impregnating this base material with epoxy resin, etc., and laminating and molding them.They have good punching workability and are used for electrical insulation purposes. . The conventionally used glass fiber nonwoven fabric is
Most of them are manufactured by a wet method in which short glass fibers are dispersed in water and then made using a paper machine. The glass fiber itself
Since fibers do not have the property of intertwining with each other and it is difficult to heat-seal them, a binder is used to bind the fibers together. As a binder, acrylic acid resin, vinyl acetate resin,
An epoxy resin or the like is used, and these binders are sprayed onto the glass fiber nonwoven fabric made from paper. Further, as the thermosetting resin to be impregnated into the glass fiber nonwoven fabric, one having a glass transition temperature (Tg) of 80 to 130°C is used.
【０００３】0003
【発明が解決しようとする課題】ガラス繊維不織布は、
空隙が多く密度のバラツキも大きいので、これに樹脂を
含浸した場合、空隙部が樹脂リッチとなり、樹脂リッチ
となる部分も、前記密度のバラツキに起因して不均一に
分布する。積層板は、加熱処理を受けると樹脂が収縮し
、一方、基材は、その収縮を抑制する働きをする。しか
し、ガラス繊維不織布基材は、加熱処理によりバインダ
樹脂が軟化し強度が低下してしまうので、樹脂の収縮を
十分に抑制できず、しかも、樹脂リッチとなる部分が不
均一に分布しているので、熱収縮の程度も場所によって
異なり、積層板のそりや寸法変化が大きくなる。本発明
が解決しようとするは、使用する基材の一部ないし全部
がガラス繊維不織布である積層板において、そりや寸法
変化小さくすることである。[Problem to be solved by the invention] Glass fiber nonwoven fabric is
Since there are many voids and variations in density are large, when this is impregnated with resin, the voids become rich in resin, and the resin-rich portions are also distributed non-uniformly due to the variation in density. When the laminate is subjected to heat treatment, the resin shrinks, and the base material functions to suppress the shrinkage. However, with glass fiber nonwoven fabric base materials, heat treatment softens the binder resin and reduces the strength, so resin shrinkage cannot be sufficiently suppressed, and moreover, resin-rich areas are unevenly distributed. Therefore, the degree of thermal shrinkage varies depending on the location, resulting in large warpage and dimensional changes in the laminate. The object of the present invention is to reduce warpage and dimensional changes in a laminate in which part or all of the base material is made of glass fiber nonwoven fabric.
【０００４】0004
【課題を解決するための手段】本発明に係る積層板は、
ガラス繊維不織布を基材とし、これに熱硬化性樹脂を含
浸して重ね加熱加圧成形したものにおいて、ガラス繊維
不織布がアルキルセルロースを含む無機充填材をガラス
繊維不織布に保持させてその量を５０重量％以上とした
ものであり、硬化した樹脂のガラス転移温度（Ｔｇ）が
、１５０℃以上であることを特徴とする。積層板の基材
の層構成は、前記のガラス繊維不織布を芯層とし、表面
層に通常用いられているガラス繊維織布を配置するもの
であってもよい。[Means for Solving the Problems] The laminate according to the present invention includes:
A glass fiber nonwoven fabric is used as a base material, which is impregnated with a thermosetting resin and then layered and heated and pressure molded. % by weight or more, and the cured resin has a glass transition temperature (Tg) of 150° C. or more. The layer structure of the base material of the laminate may be such that the above-mentioned glass fiber nonwoven fabric is used as a core layer and a commonly used glass fiber woven fabric is arranged as a surface layer.
【０００５】また、前記の積層板の製造方法、特に、無
機充填材をガラス繊維不織布に保持させる方法は、次の
方法がよい。まず、アルキルセルロースとエポキシ樹脂
を有機溶媒に溶解して無機充填材を分散させた液を用意
する。この分散液にガラス繊維不織布を浸漬し乾燥する
方法である。[0005] Furthermore, the method for manufacturing the above-mentioned laminate, particularly the method for retaining the inorganic filler in the glass fiber nonwoven fabric, is preferably the following method. First, a liquid is prepared in which alkyl cellulose and epoxy resin are dissolved in an organic solvent and an inorganic filler is dispersed therein. This is a method in which a glass fiber nonwoven fabric is immersed in this dispersion and then dried.
【０００６】[0006]
【作用】本発明に使用しているガラス繊維不織布は、無
機充填材を多量に保持させていることにより、従来のガ
ラス繊維不織布にみられた空隙が少なくなり、密度が均
一になる。アルキルセルロースは、セルロースの水酸基
（−ＯＨ）を、アルキル基（−ＣｎＨ２ｎ＋１）に置換
したもので、その被膜形成能力により、ガラス繊維不織
布に保持させた無機充填材が脱落するのを防止する作用
をもっている。また、耐湿性に優れ熱時の軟化温度も高
いので（エチルセルロースは１５０〜１６０℃）、高温
においても無機充填材をガラス繊維不織布に確実に保持
させ、熱間強度を高めることができる。従って、上記ガ
ラス繊維不織布を基材とした積層板は、ガラス繊維不織
布の空隙が無機充填材で埋められており、ガラス繊維不
織布の熱間強度も大きいことから、加熱処理による樹脂
の収縮を抑えることができ、そりや寸法変化が抑制され
る。さらに、Ｔｇ１５０℃以上の樹脂を使用しているこ
とにより、積層板の熱間強度の保持率が高くなり、Ｔｇ
温度前後の熱処理を積層板に施しても、変形や歪みが少
なくなる。これらの相乗効果により、積層板の反り、寸
法変化の抑制が極めて顕著になるのである。ガラス繊維
不織布に保持させる無機充填材は、その量が少ないと積
層板のそりや寸法変化を抑えることができない。[Operation] The glass fiber nonwoven fabric used in the present invention retains a large amount of inorganic filler, thereby reducing the voids found in conventional glass fiber nonwoven fabrics and making the density uniform. Alkylcellulose is a cellulose in which the hydroxyl group (-OH) is replaced with an alkyl group (-CnH2n+1), and its film-forming ability prevents the inorganic filler held in the glass fiber nonwoven fabric from falling off. There is. Furthermore, since it has excellent moisture resistance and a high softening temperature when heated (150 to 160° C. for ethyl cellulose), the inorganic filler can be reliably retained in the glass fiber nonwoven fabric even at high temperatures, and hot strength can be increased. Therefore, in the laminate using the glass fiber nonwoven fabric as a base material, the voids in the glass fiber nonwoven fabric are filled with an inorganic filler, and the hot strength of the glass fiber nonwoven fabric is high, so the shrinkage of the resin due to heat treatment is suppressed. This reduces warping and dimensional changes. Furthermore, by using a resin with a Tg of 150°C or higher, the hot strength retention rate of the laminate is increased, and the Tg
Even if the laminate is subjected to heat treatment before and after the temperature, deformation and distortion will be reduced. Due to these synergistic effects, warpage and dimensional changes in the laminate are significantly suppressed. If the amount of inorganic filler retained in the glass fiber nonwoven fabric is small, warping and dimensional changes of the laminate cannot be suppressed.
【０００７】上記のように、本発明に係る積層板は、ガ
ラス繊維不織布自体に多量の無機充填材を脱落すること
なく保持させたものである。無機充填材を多量に含む積
層板とするときには、このように基材には多量の無機充
填材を保持させず、基材に含浸させる樹脂ワニス中に無
機充填材を配合しておいたり、基材と樹脂ワニスの両方
に無機充填材を入れておいて、見かけ上本発明に係る積
層板と同量の無機充填材を含む積層板とすることもでき
る。As described above, the laminate according to the present invention has a large amount of inorganic filler retained in the glass fiber nonwoven fabric itself without falling off. When making a laminate containing a large amount of inorganic filler, it is preferable to mix the inorganic filler into the resin varnish that is impregnated into the base material, or to mix the inorganic filler into the resin varnish that is impregnated into the base material. It is also possible to add an inorganic filler to both the material and the resin varnish, so that the laminate appears to contain the same amount of inorganic filler as the laminate according to the present invention.
【０００８】しかし、樹脂ワニス中に無機充填材を配合
してガラス繊維不織布基材に含浸しても、その空隙には
樹脂が選択的に埋まり、空隙が無機充填材で埋まること
はない。無機充填材は基材の表面近くに偏在することに
なるので、積層板のそりや寸法変化を抑える効果は小さ
い。また、後者のように、ガラス繊維不織布基材に十分
な量の無機充填材を保持させておかず、樹脂ワニス中に
配合した無機充填材で補う場合も同様である。However, even if an inorganic filler is blended into a resin varnish and impregnated into a glass fiber nonwoven fabric base material, the resin selectively fills the voids, and the voids are not filled with the inorganic filler. Since the inorganic filler is unevenly distributed near the surface of the base material, the effect of suppressing warpage and dimensional changes of the laminate is small. Furthermore, as in the latter case, the same applies when a sufficient amount of inorganic filler is not retained in the glass fiber nonwoven fabric base material and the inorganic filler is supplemented with an inorganic filler blended into the resin varnish.
【０００９】[0009]
【実施例】ガラス繊維不織布に無機充填材を保持させる
には、次のような方法を用いるとよい。アルキルセルロ
ースとエポキシ樹脂を有機溶媒に溶解し、これに無機充
填材を分散させる。この分散液にガラス繊維不織布を浸
漬し、乾燥する方法である。アルキルセルロースは、分
散液の中で無機充填材の沈降を防止する作用ももってい
る。アルキルセルロースは、無機充填材の重量に対して
、０．５〜２％程度の量で用いるとき、積層板のそりの
抑制、寸法安定性とも良好な結果が得られる。エポキシ
樹脂は、必ずしも必要ではないが、無機充填材の重量に
対して、１５％以下の量で使用すれば、ガラス繊維不織
布に保持させた無機充填材の脱落が一層少なくなり、取
扱いが容易となる。[Example] The following method may be used to retain an inorganic filler in a glass fiber nonwoven fabric. The alkyl cellulose and epoxy resin are dissolved in an organic solvent, and the inorganic filler is dispersed therein. This is a method in which a glass fiber nonwoven fabric is immersed in this dispersion and then dried. Alkyl cellulose also has the effect of preventing sedimentation of the inorganic filler in the dispersion. When alkyl cellulose is used in an amount of about 0.5 to 2% based on the weight of the inorganic filler, good results can be obtained in suppressing warpage and dimensional stability of the laminate. Although the epoxy resin is not necessarily required, if it is used in an amount of 15% or less based on the weight of the inorganic filler, the inorganic filler retained in the glass fiber nonwoven fabric will be less likely to fall off, making it easier to handle. Become.
【００１０】ガラス繊維不織布に保持させる無機充填材
の量は、多いほどよいが、９２〜９３重量％を越えると
、保持させるための作業性が極端に悪くなり、これ以上
の量では実質上保持させることができなくなる。使用す
る無機充填材は、水酸化アルミニウム、タルク、酸化マ
グネシウム、二酸化ケイ素等である。The larger the amount of inorganic filler retained in the glass fiber nonwoven fabric, the better; however, if it exceeds 92 to 93% by weight, the workability for retaining it becomes extremely poor, and if the amount exceeds this, it will not be retained substantially. I will not be able to do it. Inorganic fillers used include aluminum hydroxide, talc, magnesium oxide, silicon dioxide, and the like.
【００１１】実施例１
ガラス繊維不織布（坪量：５３ｇ／ｍ２，バインダ：エ
ポキシ樹脂，付着量１０〜１１重量％）を、表１に示す
配合（重量部）の分散液１に浸漬し乾燥して、水酸化ア
ルミニウムの保持量を５０重量％とした。さらに、表２
に示す配合（重量部）のワニス１を含浸乾燥してプリプ
レグ（水酸化アルミニウムを除いた樹脂含有量９２重量
％）とし、これを所定枚数重ね、両表面には銅箔を載置
して、温度１６０℃、圧力１００Ｋｇ／ｃｍ２の条件で
６０分間加熱加圧成形して、１．６ｍｍ厚さの銅張り積
層板とした。尚、表２において、硬化樹脂のＴｇは、樹
脂配合物だけを１６０℃−６時間で硬化後、そのＴｇを
ＴＭＡ法で測定したものである。Example 1 A glass fiber nonwoven fabric (basis weight: 53 g/m2, binder: epoxy resin, adhesion amount 10-11% by weight) was immersed in Dispersion 1 having the formulation (parts by weight) shown in Table 1 and dried. The amount of aluminum hydroxide retained was set at 50% by weight. Furthermore, Table 2
A prepreg (resin content excluding aluminum hydroxide of 92% by weight) is obtained by impregnating and drying varnish 1 with the formulation (parts by weight) shown in (parts by weight), and a predetermined number of sheets are stacked, copper foil is placed on both surfaces, The product was heated and pressed for 60 minutes at a temperature of 160° C. and a pressure of 100 kg/cm 2 to obtain a copper-clad laminate with a thickness of 1.6 mm. In Table 2, the Tg of the cured resin is measured by the TMA method after curing only the resin compound at 160° C. for 6 hours.
【００１２】0012
【表１】[Table 1]
【００１３】[0013]
【表２】[Table 2]
【００１４】実施例２
表１に示す分散液１を使用し、ガラス不織布への水酸化
アルミニウムの保持量を７５重量％とした以外は、実施
例１と同様にして１．６ｍｍ厚さの銅張り積層板とした
。Example 2 A copper plate having a thickness of 1.6 mm was prepared in the same manner as in Example 1, except that dispersion 1 shown in Table 1 was used and the amount of aluminum hydroxide retained on the glass nonwoven fabric was 75% by weight. It was made into a stretched laminate.
【００１５】実施例３
表１に示す分散液１を使用し、ガラス不織布への水酸化
アルミニウムの保持量を９１重量％とした以外は、実施
例１と同様にして１．６ｍｍ厚さの銅張り積層板とした
。Example 3 A copper plate having a thickness of 1.6 mm was prepared in the same manner as in Example 1, except that dispersion 1 shown in Table 1 was used and the amount of aluminum hydroxide retained on the glass nonwoven fabric was 91% by weight. It was made into a stretched laminate.
【００１６】実施例４
表１に示す分散液２を使用し、ガラス不織布への水酸化
アルミニウムの保持量を９０重量％とした以外は、実施
例１と同様にして１．６ｍｍ厚さの銅張り積層板とした
。Example 4 A 1.6 mm thick copper plate was prepared in the same manner as in Example 1, except that dispersion 2 shown in Table 1 was used and the amount of aluminum hydroxide retained on the glass nonwoven fabric was 90% by weight. It was made into a stretched laminate.
【００１７】実施例５
表１に示す分散液３を使用し、ガラス不織布への水酸化
アルミニウムの保持量を７５重量％とした以外は、実施
例１と同様にして１．６ｍｍ厚さの銅張り積層板とした
。Example 5 A copper plate having a thickness of 1.6 mm was prepared in the same manner as in Example 1, except that dispersion 3 shown in Table 1 was used and the amount of aluminum hydroxide retained on the glass nonwoven fabric was 75% by weight. It was made into a stretched laminate.
【００１８】実施例６
表１に示す分散液３を使用し、ガラス不織布への水酸化
アルミニウムの保持量を９０重量％とした以外は、実施
例１と同様にして１．６ｍｍ厚さの銅張り積層板とした
。Example 6 A copper plate having a thickness of 1.6 mm was prepared in the same manner as in Example 1, except that dispersion 3 shown in Table 1 was used and the amount of aluminum hydroxide retained on the glass nonwoven fabric was 90% by weight. It was made into a stretched laminate.
【００１９】実施例７
実施例２で使用したプリプレグを所定枚数重ねて芯層に
し、両表面層にはビスフェノール型エポキシ樹脂を含浸
乾燥して得たガラス繊維織布プリプレグを１枚使用し、
さらに銅箔を重ねて、以下実施例１と同様にして１．６
ｍｍ厚さの銅張り積層板とした。Example 7 A predetermined number of prepregs used in Example 2 were stacked to form a core layer, and one glass fiber woven prepreg obtained by impregnating and drying a bisphenol type epoxy resin was used for both surface layers.
Further, overlap the copper foil and proceed as in Example 1 to obtain 1.6
It was made into a copper-clad laminate with a thickness of mm.
【００２０】実施例８
実施例３で使用したプリプレグを所定枚数重ねて芯層に
し、以下実施例７と同様にして１．６ｍｍ厚さの銅張り
積層板とした。Example 8 A predetermined number of prepregs used in Example 3 were stacked to form a core layer, and the same procedure as in Example 7 was carried out to prepare a copper-clad laminate having a thickness of 1.6 mm.
【００２１】比較例１
表１に示す分散液２を使用し、ガラス不織布への水酸化
アルミニウムの保持量を４５重量％とした以外は、実施
例１と同様にして１．６ｍｍ厚さの銅張り積層板とした
。Comparative Example 1 A copper plate having a thickness of 1.6 mm was prepared in the same manner as in Example 1, except that dispersion 2 shown in Table 1 was used and the amount of aluminum hydroxide retained on the glass nonwoven fabric was 45% by weight. It was made into a stretched laminate.
【００２２】比較例２
表１に示す分散液１を使用してガラス不織布への水酸化
アルミニウムの保持量を９０重量％とし、表２に示すワ
ニス２を使用した以外は、実施例１と同様にして１．６
ｍｍ厚さの銅張り積層板とした。Comparative Example 2 Same as Example 1 except that dispersion 1 shown in Table 1 was used to hold aluminum hydroxide in the glass nonwoven fabric at 90% by weight, and varnish 2 shown in Table 2 was used. to 1.6
It was made into a copper-clad laminate with a thickness of mm.
【００２３】比較例３
比較例２で使用したプリプレグを所定枚数重ねて芯層に
し、以下実施例７と同様にして１．６ｍｍ厚さの銅張り
積層板とした。Comparative Example 3 A predetermined number of prepregs used in Comparative Example 2 were stacked to form a core layer, and the same procedure as in Example 7 was carried out to prepare a copper-clad laminate having a thickness of 1.6 mm.
【００２４】従来例１
実施例１で使用したガラス繊維不織布に、表３に示す配
合（重量部）のワニス３を含浸乾燥してプリプレグ（水
酸化アルミニウムを除いた樹脂含有量９２重量％）とし
、以下、実施例１と同様にして１．６ｍｍ厚さの銅張り
積層板とした。Conventional Example 1 The glass fiber nonwoven fabric used in Example 1 was impregnated with varnish 3 having the composition (parts by weight) shown in Table 3 and dried to form a prepreg (resin content 92% by weight excluding aluminum hydroxide). Hereinafter, in the same manner as in Example 1, a copper-clad laminate having a thickness of 1.6 mm was prepared.
【００２５】[0025]
【表３】[Table 3]
【００２６】上記実施例、比較例、従来例の各積層板の
特性を表４、表５に示す。Tables 4 and 5 show the characteristics of the laminates of the above examples, comparative examples, and conventional examples.
【００２７】[0027]
【表４】[Table 4]
【００２８】[0028]
【表５】[Table 5]
【００２９】表４および表５における寸法変化率および
そりの測定は、次の通りとした。寸法変化：Ｅ−０．５
／１５０加熱処理前後の変化率を測定。そり：２００×
２００ｍｍの試験片の銅箔をエッチングにより全面除去
し、Ｅ−０．５／１５０加熱処理後に定盤上に載置し、
四隅の浮き上がり量の最大値を測定。The dimensional change rate and warpage in Tables 4 and 5 were measured as follows. Dimensional change: E-0.5
/150 Measure the rate of change before and after heat treatment. Sled: 200×
The entire copper foil of a 200 mm test piece was removed by etching, and after E-0.5/150 heat treatment, it was placed on a surface plate.
Measure the maximum amount of lift at the four corners.
【００３０】また、実施例４で使用した水酸化アルミニ
ウム保持ガラス繊維不織布に、Ｔｇの異なる樹脂を含浸
乾燥してプリプレグを得、これら各プリプレグを重ねて
加熱加圧成形した積層板のそりを図１に示す。これから
、樹脂のＴｇを１５０℃以上とすることにより、そりが
著しく小さくなることが分かる。In addition, prepregs were obtained by impregnating and drying the aluminum hydroxide-retaining glass fiber nonwoven fabric used in Example 4 with resins of different Tg, and the warping of a laminate made by stacking these prepregs and molding them under heat and pressure is shown in the figure. Shown in 1. From this, it can be seen that by setting the Tg of the resin to 150° C. or higher, the warpage becomes significantly smaller.
【００３１】[0031]
【発明の効果】表４および表５、ならびに図１から明か
なように、アルキルセルロースを含み無機充填材を多量
に保持させたガラス繊維不織布を基材とし、これにＴｇ
が１５０℃以上の熱硬化性樹脂を含浸して成形した積層
板は、ガラス繊維不織布の空隙が無機充填材で埋められ
ていることにより樹脂リッチとならないので加熱処理を
したときの樹脂の収縮が小さい。しかも、基材の熱間強
度が大きいことならびに高Ｔｇ樹脂を使用することによ
る積層板の熱間強度の保持率が高くなり、そりや寸法変
化の小さい積層板とすることができる。また、ガラス繊
維不織布を芯層とし、表面層としてガラス繊維織布を組
合せた積層板は、積層板のそり、寸法変化を一層小さく
できる。Effects of the Invention As is clear from Tables 4 and 5 and FIG.
A laminate made by impregnating thermosetting resin with a temperature of 150°C or higher does not become resin-rich because the voids in the glass fiber nonwoven fabric are filled with an inorganic filler, so the resin shrinks when heat treated. small. Moreover, the high hot strength of the base material and the use of a high Tg resin increase the hot strength retention rate of the laminate, making it possible to produce a laminate with little warpage or dimensional change. Furthermore, a laminate in which a glass fiber nonwoven fabric is used as a core layer and a glass fiber woven fabric is used as a surface layer can further reduce warpage and dimensional changes of the laminate.
【図１】熱硬化性樹脂のＴｇと積層板のそりの関係を示
す曲線図である。FIG. 1 is a curve diagram showing the relationship between Tg of a thermosetting resin and warpage of a laminate.
Claims (3)
を重ねて加熱加圧成形した積層板において、ガラス繊維
不織布が、アルキルセルロースを含む無機充填材をガラ
ス繊維不織布に保持させてその量を５０重量％以上とし
たものであり、硬化した樹脂のガラス転移温度（Ｔｇ）
が、１５０℃以上であることを特徴とする積層板。Claim 1: A laminate in which glass fiber nonwoven fabrics impregnated with a thermosetting resin are laminated and molded under heat and pressure. 50% by weight or more, and the glass transition temperature (Tg) of the cured resin
is 150°C or higher.
の層を芯層にし、熱硬化性樹脂を含浸したガラス繊維織
布の層を表面層にして加熱加圧成形した積層板において
、ガラス繊維不織布が、アルキルセルロースを含む無機
充填材をガラス繊維不織布に保持させてその量を５０重
量％以上としたものであり、硬化した樹脂のガラス転移
温度（Ｔｇ）が、１５０℃以上であることを特徴とする
積層板。[Claim 2] A laminate formed by heating and pressure forming a layer of glass fiber non-woven fabric impregnated with a thermosetting resin as a core layer and a layer of glass fiber woven fabric impregnated with a thermosetting resin as a surface layer. The fibrous nonwoven fabric is one in which an inorganic filler containing alkyl cellulose is held in a glass fiber nonwoven fabric in an amount of 50% by weight or more, and the glass transition temperature (Tg) of the cured resin is 150°C or more. A laminate board featuring:
溶媒に溶解して無機充填材を分散させた液を用意し、こ
の分散液にガラス繊維不織布を浸漬し乾燥して、ガラス
繊維不織布に保持させた無機充填材の含有量を５０重量
％以上とし、このガラス不織布に、硬化した樹脂のガラ
ス転移温度（Ｔｇ）が１５０℃以上である熱硬化性樹脂
を含浸して得たプリプレグを全部ないし一部として積層
成形することを特徴とする積層板の製造法。Claim 3: A liquid in which an alkyl cellulose and an epoxy resin are dissolved in an organic solvent and an inorganic filler is dispersed therein is prepared, and a glass fiber nonwoven fabric is immersed in this dispersion and dried to be retained in the glass fiber nonwoven fabric. The content of the inorganic filler is 50% by weight or more, and all or part of the prepreg obtained by impregnating this glass nonwoven fabric with a thermosetting resin whose cured resin has a glass transition temperature (Tg) of 150 ° C. or higher. A method for manufacturing a laminate, characterized by lamination molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5526191A JPH04290739A (en) | 1991-03-20 | 1991-03-20 | Laminated plate and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5526191A JPH04290739A (en) | 1991-03-20 | 1991-03-20 | Laminated plate and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04290739A true JPH04290739A (en) | 1992-10-15 |
Family
ID=12993656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5526191A Pending JPH04290739A (en) | 1991-03-20 | 1991-03-20 | Laminated plate and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04290739A (en) |
-
1991
- 1991-03-20 JP JP5526191A patent/JPH04290739A/en active Pending
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