JPH0823002B2 - Thermosetting adhesive - Google Patents
Thermosetting adhesiveInfo
- Publication number
- JPH0823002B2 JPH0823002B2 JP60296768A JP29676885A JPH0823002B2 JP H0823002 B2 JPH0823002 B2 JP H0823002B2 JP 60296768 A JP60296768 A JP 60296768A JP 29676885 A JP29676885 A JP 29676885A JP H0823002 B2 JPH0823002 B2 JP H0823002B2
- Authority
- JP
- Japan
- Prior art keywords
- adhesive
- calcium carbonate
- talc
- composition
- filler
- 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.)
- Expired - Lifetime
Links
Landscapes
- Adhesives Or Adhesive Processes (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は電気または電子各種部品の接着に用いられる
熱硬化性接着剤に関するものである。Description: TECHNICAL FIELD The present invention relates to a thermosetting adhesive used for bonding various electric or electronic parts.
従来の技術 一般に各種熱硬化性樹脂，注型材および接着剤など
は、その目的に応じて作業性の改善やそれぞれの機能を
満たすため、更には低コスト化などのため各種充填剤が
添加されている。例えば、熱伝導性を高めるにはベリリ
ア粉末を添加し、熱膨脹係数値を下げるため大量の炭酸
カルシウムやシリカ粉末を添加している。そして、これ
らは熱硬化性接着剤として要求される特性を満たさなけ
ればならない。2. Description of the Related Art Generally, various thermosetting resins, casting materials, adhesives, etc. are added with various fillers for improving workability and satisfying their functions according to the purpose, and further for cost reduction. There is. For example, beryllia powder is added to increase the thermal conductivity, and a large amount of calcium carbonate or silica powder is added to decrease the coefficient of thermal expansion. And, these must satisfy the properties required as a thermosetting adhesive.
近年、電気，電子部品の精密化の要求は厳しく、部品
の機能にかかわる精密接着剤において特にこれらの充填
剤の配合組成が技術的に詳細に研究，設定され、厳密な
管理が必要になってきている。In recent years, the demand for precision of electric and electronic parts is strict, and in the case of precision adhesives related to the function of parts, especially the compounding composition of these fillers has been studied and set technically in detail, and strict control is required. ing.
発明が解決しようとする問題点 電気および電子部品用熱硬化性接着剤として、要求さ
れる基本的な特性の中には粘度，チキソトロピック係
数，剪断接着力，衝撃接着力，熱変形温度，熱膨脹係
数，耐クラック性などがある。これらの特性は総合的に
性状や接着現象での判断が必要であり、特に精密接着剤
は塗布作業性が良好で加熱硬化時の流れが適当であり、
硬化後の完成部品にタレやダレの発生がなく、また特殊
な目的として硬化後の電子部品の修理再生が可能な性質
を有することなどが要求されるが、現在のところこれら
すべての条件を満足する熱硬化性接着剤はない。Problems to be Solved by the Invention Among thermosetting adhesives for electric and electronic parts, basic properties required are viscosity, thixotropic coefficient, shear adhesive force, impact adhesive force, thermal deformation temperature, thermal expansion. Coefficient, crack resistance, etc. These properties require comprehensive judgment based on properties and adhesion phenomena, especially precision adhesives have good coating workability and a suitable flow during heat curing,
Although it is required that the finished parts after curing do not cause sagging or sagging, and that the special purpose is to have the property of being able to repair and regenerate electronic parts after curing, at present, all of these conditions are satisfied. There is no thermosetting adhesive that does.
そこで、本発明は加熱硬化によるタレやダレの発生が
なく、また硬化後の修理再生が可能である熱硬化性接着
剤を提供することを目的とする。Therefore, an object of the present invention is to provide a thermosetting adhesive that does not cause sagging or sagging due to heat curing and can be repaired and regenerated after curing.
問題点を解決するための手段 上記したような諸特性を満足させるため、本発明の熱
硬化性接着剤は、主剤と硬化剤と充填剤とを含有し、前
記充填剤は前記熱硬化性接着剤の組成の51〜55％で、か
つ、前記充填剤は炭酸カルシウムとタルクとを有すると
ともに、前記炭酸カルシウムと前記タルクの総量に対し
て前記炭酸カルシウムが30〜50％とである構成とした。Means for Solving the Problems In order to satisfy the above-mentioned various characteristics, the thermosetting adhesive of the present invention contains a main agent, a curing agent, and a filler, and the filler is the thermosetting adhesive. The composition is 51 to 55% of the composition of the agent, and the filler has calcium carbonate and talc, and the calcium carbonate is 30 to 50% with respect to the total amount of the calcium carbonate and the talc. .
作用 充填剤の量を熱硬化性接着剤の組成の51〜55％で、か
つ、充填剤は炭酸カルシウムとタルクとを有するととも
に、炭酸カルシウムとタルクの総量に対して炭酸カルシ
ウムが30〜50％とである構成としたことによって、熱硬
化によるタレやダレの発生がなく、また硬化後接着した
電子部品の修理再生が可能となった。Action The amount of the filler is 51 to 55% of the composition of the thermosetting adhesive, and the filler has calcium carbonate and talc, and the total amount of calcium carbonate and talc is 30 to 50% of calcium carbonate. By adopting the configuration as described above, there is no occurrence of sagging or sagging due to heat curing, and it is possible to repair and regenerate electronic components bonded after curing.
実 施 例 熱硬化性接着剤の塗布や熱硬化におけるタレやダレの
発生を解決するため、先ず各種充填剤の中で炭酸カルシ
ウムとタルク（滑石）の各粉末のそれぞれの性質に注目
し、その挙動の特徴を明らかにした。In order to solve the occurrence of sagging or sagging during the application or thermosetting of thermosetting adhesives, we first focused on the respective properties of each powder of calcium carbonate and talc (talc) among various fillers, and The characteristics of the behavior were clarified.
炭酸カルシウム粉末は熱硬化性樹脂の充填剤として、
特にエポキシ樹脂や各種硬化剤とのヌレ性が良く多量の
添加が可能であり、特殊な使用法では樹脂量の２〜３倍
の添加も可能とされ、このような組成物では熱膨脹係数
の値を非常に小さな値にすることが可能で、特殊な用途
に供せられる。また、炭酸カルシウム粉末は形状が不定
形粒状で通常その単一の添加樹脂組成物ではチキソ性が
低く、塗布作業から加熱硬化過程での接着剤の流れ性に
組成に工夫が必要と考えられる。Calcium carbonate powder as a filler of thermosetting resin,
In particular, it has good wetting properties with epoxy resins and various curing agents and can be added in a large amount. In a special usage, it is possible to add 2 to 3 times the resin amount. In such a composition, the value of the coefficient of thermal expansion is Can be made to be a very small value, and can be used for special purposes. Further, the calcium carbonate powder has an irregular shape and usually has low thixotropy with a single added resin composition, and it is considered that composition of the composition is required for the flowability of the adhesive from the coating operation to the heat curing process.
一方、充填剤としてのタルク粉末は粒形か鱗片状の特
殊の形状であり、樹脂に添加することによってチキソ性
が高くなるほどダレ止め効果が期待される。また、タル
ク粉末は硬度が小さいのでこれら硬化物の熱変形温度と
かかわる上記再生の点で有利と考えられる。On the other hand, talc powder as a filler has a special shape such as a particle shape or a scale shape, and when it is added to a resin, the anti-sagging effect is expected as the thixotropy becomes higher. Further, since the talc powder has a low hardness, it is considered to be advantageous in the above-mentioned regeneration related to the heat distortion temperature of these cured products.
そこで、熱硬化性精密接着剤として要求される中温エ
ポキシ樹脂接着剤の樹脂分100部，中温硬化剤90部に対
し、炭酸カルシウム粉末各部数をそれぞれ添加した各組
成物の粘度，衝撃接着力，熱膨脹係数などの測定評価を
行った。そして、通常の塗布作業での適正粘度の組成範
囲を定めた。その結果、炭酸カルシウム粉末のみの適正
重量添加は200〜230部の範囲であった。この添加量が20
0部を下回った場合、粘度が低く接着塗布量の保持がで
きず、塗布時のダレが起こる。また、その230部を上回
った場合、粘度が高く塗布作業が困難であった。Therefore, 100 parts of the resin component of the medium-temperature epoxy resin adhesive required as a thermosetting precision adhesive, 90 parts of the medium-temperature curing agent, the viscosity of each composition in which each part of each calcium carbonate powder is added, the impact adhesive strength, The thermal expansion coefficient and other measurements were evaluated. Then, the composition range of the proper viscosity in the usual coating operation was determined. As a result, the proper weight addition of calcium carbonate powder was in the range of 200 to 230 parts. This addition amount is 20
If it is less than 0 part, the viscosity is low and the amount of adhesive coating cannot be maintained, resulting in sagging during coating. Further, when it exceeds 230 parts, the viscosity is high and the coating work is difficult.
ところで、更にこれらの炭酸カルシウム粉末添加量20
0〜230部の範囲組成物を、予め設定した硬化条件で熱硬
化処理した結果、タレが発生した。そこで、上記のエポ
キシ樹脂100部，中温硬化剤90部に対し、充填剤230部を
添加した組成に関し、その充填剤炭酸カルシウム粉末の
一部分または全部を充填剤タルク粉末で置き換えて調整
した各組成物の粘度をＢ型粘度計を用い、回転数2rpmと
20rpmの条件で測定した。これらの各組成物に二つの測
定粘度より、それぞれ算出したチキソトロピック係数の
値を第１図に示す。この第１図の結果から、明らかなよ
うに充填剤タルクの置換量の増量に伴いチキソ性の上
昇，ダレ止めが認められた。By the way, the addition amount of these calcium carbonate powders is 20
Sagging occurred as a result of thermosetting the composition in the range of 0 to 230 parts under preset curing conditions. Therefore, regarding the composition in which 230 parts of the filler is added to 100 parts of the above epoxy resin and 90 parts of the medium-temperature curing agent, each composition prepared by replacing part or all of the filler calcium carbonate powder with the filler talc powder Using a B-type viscometer, the viscosity of 2 rpm
It was measured under the condition of 20 rpm. The value of the thixotropic coefficient calculated for each of these compositions from the two measured viscosities is shown in FIG. From the results shown in FIG. 1, it is apparent that the thixotropy increased and the sagging was stopped with the increase of the substitution amount of the filler talc.
次に、加熱硬化を行ったこれら各組成物の外観上の判
定結果および衝撃接着強度，熱膨脹係数各測定結果を第
２図に示した。Next, FIG. 2 shows the results of appearance determination and the results of measurement of impact adhesive strength and thermal expansion coefficient of each of these compositions which were heat-cured.
第２図に示すように、充填剤タルク添加置換比率50〜
70％の範囲が精密接着剤として適正な組成領域と認めら
れた。この場合、70％を上回る組成物は塗布作業性が困
難で、加熱硬化により樹脂が流れにくくなり、接着力が
低下する。また、50％を下回る組成物は加熱硬化により
タレが発生し、精密接着剤として外観を著しく損なう結
果となった。また、この適正組成範囲の組成硬化物の衝
撃接着力および熱膨張係数の各値は精密接着剤として要
求された値を満足するものである。As shown in FIG. 2, the replacement ratio of the filler talc is 50-
The range of 70% was recognized as a proper composition region as a precision adhesive. In this case, if the composition exceeds 70%, the coating workability is difficult, and it becomes difficult for the resin to flow due to heat curing, and the adhesive strength is reduced. Further, the composition of less than 50% caused sagging due to heat curing, resulting in a markedly impaired appearance as a precision adhesive. Further, the respective values of the impact adhesive strength and the thermal expansion coefficient of the composition cured product in the proper composition range satisfy the values required for the precision adhesive.
以上の説明のように、本発明は塗布作業性や精密接着
性に優れた中温硬化型接着組成物を提供しようとするも
のである。以下、本発明の実施例を示す。As described above, the present invention is intended to provide a medium-temperature curable adhesive composition having excellent coating workability and precision adhesiveness. Examples of the present invention will be shown below.
先ず、エポキシ樹脂（例えば、東都化成:YD−128）40
kgを混合撹拌用ボールに秤取する。これに炭酸カルシウ
ム粉末（例えば、白石工業（株）製 P,50）20kg,次いで
タルク（滑石：例えば、林田工業（株）製 タルク−
Ｓ）24kgを正確に秤する。そして、これを専用混合撹拌
機にセットし、回転速度40rpmで５分間予備混合撹拌を
行ったのち、回転速度90rpmで更に25分間本撹拌を行っ
たものを接着剤主材Ａとする。First, epoxy resin (for example, Toto Kasei: YD-128) 40
Weigh kg into a mixing and stirring ball. 20 kg of calcium carbonate powder (for example, P, 50 manufactured by Shiraishi Industry Co., Ltd.), and then talc (talc: for example, Talc manufactured by Hayashida Industry Co., Ltd.)
S) Accurately weigh 24 kg. Then, this is set in a dedicated mixing stirrer, premixed and stirred at a rotation speed of 40 rpm for 5 minutes, and then subjected to main stirring at a rotation speed of 90 rpm for another 25 minutes, which is referred to as an adhesive main material A.
次いで、中温型硬化材ポリアミド（例えば、東都化成
（株）製）25.5kgを別の専用混合撹拌用ボールに秤取す
る。これに炭酸カルシウム（前述品）粉末18.0kg,次い
でタルク（前述品）16.5kg,更に着色材0.6kgをそれぞれ
正確に秤取し、主材Ａと同一混合撹拌方法，条件にて混
合撹拌し、接着剤硬化材Ｂとする。Next, 25.5 kg of a medium temperature type curing material polyamide (for example, manufactured by Tohto Kasei Co., Ltd.) is weighed into another dedicated mixing and stirring ball. Accurately weigh 18.0 kg of calcium carbonate (previous product) powder, then 16.5 kg of talc (previous product), and 0.6 kg of coloring material, and mix and stir under the same mixing and stirring method and conditions as the main material A. Adhesive curing material B.
これらの接着剤主材Ａと硬化材Ｂとの重量混合比が1:
1になるように秤取、自動撹拌機で十分に混合し、精密
接着剤として使用に供する。本接着剤の加熱硬化条件は
は80±５℃,45±５分である。これらの精密接着剤の物
製値および加熱硬化物の特性値を一般市販品と対比して
第１表に示す。The weight mixing ratio of the adhesive main material A and the curing material B is 1:
Weigh it out to 1 and mix it well with an automatic stirrer before using it as a precision adhesive. The heat curing conditions of this adhesive are 80 ± 5 ° C. and 45 ± 5 minutes. Table 1 shows product values of these precision adhesives and characteristic values of heat-cured products in comparison with general commercial products.
第１表で明らかなように本実施例の中温熱硬化性接着
材は熱膨脹係数（65×10-6/℃），衝撃接着力（15kg c
m），剪断接着力（126kg/cm2），熱変形温度（79℃）な
ど、優れた接着特性を示した。 As is clear from Table 1, the medium temperature thermosetting adhesive of this example has a coefficient of thermal expansion (65 × 10 −6 / ° C.) and an impact adhesive strength (15 kg c).
m), shear adhesive strength (126 kg / cm 2 ) and heat distortion temperature (79 ℃).
発明の効果 以上の説明にて明らかとなったように本発明の熱硬化
性接着材は中温熱硬化樹脂中の充填剤の量を熱硬化性接
着剤の組成の51〜55％で、かつ、充填剤の炭酸カルシウ
ムとタルクの添加量比率を炭酸カルシウムが30〜50％と
タルクが50〜70％の範囲で変えることにより、接着剤の
粘度およびチキソ性など接着剤の初期物性の制御がで
き、また中温加熱硬化条件で精密接着の要求性能を満た
すものであり、電気，電子部品の精密接着剤として大い
に利用されうるものである。また、熱変形温度も低いた
め熱処理による接着部分の再生も可能であるという効果
を有する。EFFECT OF THE INVENTION As is clear from the above description, the thermosetting adhesive of the present invention has the amount of the filler in the medium temperature thermosetting resin of 51 to 55% of the composition of the thermosetting adhesive, and The initial physical properties of the adhesive such as the viscosity and thixotropy of the adhesive can be controlled by changing the addition ratio of calcium carbonate to talc of the filler within the range of 30 to 50% calcium carbonate and 50 to 70% talc. In addition, it satisfies the required performance of precision bonding under medium temperature heating and curing conditions, and can be greatly utilized as a precision adhesive for electric and electronic parts. Further, since the heat distortion temperature is low, there is an effect that the bonded portion can be regenerated by heat treatment.
第１図は、本発明の熱硬化性接着剤の一実施例における
炭酸カルシウムとタルクとの組成比と、チキソトロピッ
ク係数との関係を示す特性曲線図、第２図は、動実施例
における炭酸カルシウムとタルクとの組成比と、熱硬化
後の衝撃接着強度並びに熱膨脹係数との関係を示す特性
曲線図である。FIG. 1 is a characteristic curve diagram showing the relationship between the thixotropic coefficient and the composition ratio of calcium carbonate and talc in one example of the thermosetting adhesive of the present invention, and FIG. It is a characteristic curve figure which shows the relationship of the composition ratio of calcium and talc, the impact bond strength after thermosetting, and a thermal expansion coefficient.
Claims (1)
し、電気または電子各種部品の接着に用いられる熱硬化
性接着剤であって、前記充填剤は前記熱硬化性接着剤の
組成の51〜55％で、かつ、前記充填剤は炭酸カルシウム
とタルクとを有するとともに、前記炭酸カルシウムと前
記タルクの総量に対して前記炭酸カルシウムが30〜50％
とであることを特徴とする熱硬化性接着剤。1. A thermosetting adhesive containing an epoxy resin, a curing agent, and a filler, which is used for bonding various electrical or electronic parts, wherein the filler is a composition of the thermosetting adhesive. 51-55%, and the filler has calcium carbonate and talc, and the calcium carbonate is 30-50% with respect to the total amount of the calcium carbonate and the talc.
And a thermosetting adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60296768A JPH0823002B2 (en) | 1985-12-27 | 1985-12-27 | Thermosetting adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60296768A JPH0823002B2 (en) | 1985-12-27 | 1985-12-27 | Thermosetting adhesive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62153372A JPS62153372A (en) | 1987-07-08 |
| JPH0823002B2 true JPH0823002B2 (en) | 1996-03-06 |
Family
ID=17837872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60296768A Expired - Lifetime JPH0823002B2 (en) | 1985-12-27 | 1985-12-27 | Thermosetting adhesive |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0823002B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI713650B (en) * | 2015-12-14 | 2020-12-21 | 日商迪睿合股份有限公司 | Thermosetting adhesive sheet and manufacturing method of semiconductor device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4629069B2 (en) * | 2007-06-04 | 2011-02-09 | アイカ工業株式会社 | Acid release epoxy resin adhesive composition |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59172570A (en) * | 1983-03-20 | 1984-09-29 | Ashimori Ind Co Ltd | Adhesive for use in lining water pipe |
| JPS6079029A (en) * | 1983-10-07 | 1985-05-04 | Toshiba Chem Corp | Thermosetting resin composition |
-
1985
- 1985-12-27 JP JP60296768A patent/JPH0823002B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI713650B (en) * | 2015-12-14 | 2020-12-21 | 日商迪睿合股份有限公司 | Thermosetting adhesive sheet and manufacturing method of semiconductor device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62153372A (en) | 1987-07-08 |
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