JPH0129375B2 - - Google Patents
Info
- Publication number
- JPH0129375B2 JPH0129375B2 JP13617083A JP13617083A JPH0129375B2 JP H0129375 B2 JPH0129375 B2 JP H0129375B2 JP 13617083 A JP13617083 A JP 13617083A JP 13617083 A JP13617083 A JP 13617083A JP H0129375 B2 JPH0129375 B2 JP H0129375B2
- Authority
- JP
- Japan
- Prior art keywords
- epoxy resin
- base material
- water
- weight
- nonwoven fabric
- 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
Links
Landscapes
- Reinforced Plastic Materials (AREA)
- Laminated Bodies (AREA)
Description
本発明は、耐湿性、電気絶縁性が優れしかも安
価に得られる積層板の製造法に関する。
セルロース繊維混抄のガラス不織布基材は、ガ
ラス繊維単独の不織布に比べ安価に得られ、しか
も機械的強度が大きい。しかし、セルロース繊維
混抄ガラス不織布基材に通常のエポキシ樹脂の疎
水性樹脂を直接含浸し、乾燥後、これを積層成形
した場合、得られた積層板の耐湿性、電気絶縁性
が悪いという欠点を有していた。
本発明は、上記欠点を解決するもので、アルコ
キシ基とエポキシ基またはアミノ基とを併せ有す
るシラン化合物を添加した水溶性エポキシ樹脂の
水溶液または有機溶剤溶液を、予めセルロース繊
維混抄ガラス不織布基材に含浸乾燥した後、該含
浸基材にエポキシ樹脂を含浸、乾燥して得たプリ
プレグを積層成形するものである。
前記シラン化合物に含まれるアルコキシ基（Si
−OR）は、加水分解されてシラノール基（Si−
OH）となり、基材のガラス繊維表面と結合す
る。一方、アミノ基またはエポキシ基は、後工程
で含浸するエポキシ樹脂および前記基材処理用の
水溶性エポキシ樹脂と相溶して結合し、更に、水
溶性エポキシ樹脂は、セルロース繊維混抄ガラス
不織布基材中に含まれるセルロース繊維の内部ま
で浸透し、そのエポキシ基が後工程する含浸する
エポキシ樹脂と反応し、セルロース繊維混抄ガラ
ス不織布基材とエポキシ樹脂の緊密性を増して耐
湿性、電気絶縁性を向上させる。すなわち、セル
ロース繊維混抄ガラス不織布基材を使用したエポ
キシ樹脂積層板は、前記シラン化合物および水溶
性エポキシ樹脂を併用することによつて初めて積
層板の耐湿性、電気絶縁性を向上することができ
る。
本発明に使用されるセルロース繊維混抄ガラス
不織布基材は、クラフト、マニラ麻、みつまた等
のセルロース系パルプを一部混抄したガラス繊維
を主体とする不織布であり、通常の抄紙機にて抄
造したものである。また、シラン化合物は分子中
にアルコキシ基とアミノ基またはエポキシ基とを
併せ有するシラン化合物で第１表に示すものが適
当である。
水溶性エポキシ樹脂は、エチレングリコールジ
グリシジルエーテル、トリエチレングリコールジ
グリシジルエーテル、グリセリンジグリシジルエ
ーテル等のポリエーテル結合を持つジエポキシ化
合物が適当であり、酸、アミン類等のエポキシ樹
脂用硬化剤、酸性もしくは塩基性の硬化促進剤を
添加し、水溶性または有機溶剤溶液として使用す
る。なお、水溶性エポキシ樹脂の含浸付着量は、
乾燥後の重量で５〜20重量％が適当である。
The present invention relates to a method for producing a laminate that has excellent moisture resistance and electrical insulation properties and can be obtained at low cost. A glass nonwoven fabric base material mixed with cellulose fibers can be obtained at a lower cost than a nonwoven fabric made only of glass fibers, and has greater mechanical strength. However, when a cellulose fiber-mixed glass nonwoven fabric base material is directly impregnated with a hydrophobic resin such as an ordinary epoxy resin, and then laminated and molded after drying, the resulting laminate has the disadvantage of poor moisture resistance and electrical insulation. had. The present invention solves the above-mentioned drawbacks by applying an aqueous solution or an organic solvent solution of a water-soluble epoxy resin containing a silane compound having both an alkoxy group and an epoxy group or an amino group to a glass nonwoven fabric base material mixed with cellulose fibers in advance. After impregnation and drying, the prepreg obtained by impregnating the impregnated base material with an epoxy resin and drying is laminated and molded. The alkoxy group (Si
-OR) is hydrolyzed to form a silanol group (Si-
OH) and bond to the glass fiber surface of the base material. On the other hand, the amino group or epoxy group is compatible with and bonded to the epoxy resin to be impregnated in the subsequent process and the water-soluble epoxy resin for treating the base material, and furthermore, the water-soluble epoxy resin is bonded to the base material of the cellulose fiber-mixed glass nonwoven fabric. It penetrates into the inside of the cellulose fibers contained therein, and its epoxy groups react with the impregnated epoxy resin in the subsequent process, increasing the tightness between the cellulose fiber-mixed glass nonwoven fabric base material and the epoxy resin, resulting in moisture resistance and electrical insulation properties. Improve. That is, an epoxy resin laminate using a glass nonwoven fabric base material mixed with cellulose fibers can improve its moisture resistance and electrical insulation only by using the silane compound and a water-soluble epoxy resin together. The cellulose fiber-mixed glass nonwoven fabric base material used in the present invention is a nonwoven fabric mainly made of glass fibers partially mixed with cellulose pulp such as kraft, manila hemp, and mitsumata, and is made using an ordinary paper machine. be. Suitable silane compounds include those shown in Table 1 having both an alkoxy group and an amino group or an epoxy group in the molecule. Suitable water-soluble epoxy resins are diepoxy compounds having polyether bonds such as ethylene glycol diglycidyl ether, triethylene glycol diglycidyl ether, and glycerin diglycidyl ether, and curing agents for epoxy resins such as acids and amines, and acidic Alternatively, a basic curing accelerator may be added and used as a water-soluble or organic solvent solution. In addition, the amount of water-soluble epoxy resin impregnated is:
A suitable amount is 5 to 20% by weight after drying.
【表】
次に本発明の実施例について述べる。
実施例
重量比で（ガラス／マニラ麻）＝90／10の混抄
紙基材に水溶性エポキシ樹脂を付着量が12重量％
となるよう含浸し乾燥した。水溶性エポキシ樹脂
は、シヨウダイン80MF（商品名、共栄社油脂化
学工業(株)製）50重量部に、ジシアンジアミド
（DICY）２重量部、ベンジルジメチルアミノ
（BDMA）0.3重量部、シラン化合物（KBM−
403）１重量を添加配合したものである。
次に、上記含浸基材にエポキシ樹脂を総付着量
60重量％となるよう含浸し乾燥してプリプレグを
得た。このエポキシ樹脂は、エポン1045（商品名、
油化シエルエポキシ(株)製）100重量部にDICY4重
量部、BDMA0.5重量部を添加配合したものであ
る。
上記プリプレグを積層し、温度170℃、圧力80
Kg／cm2で30分間加熱加圧成形した。
従来例
実施例と同様の基材に水溶性エポキシ樹脂を含
浸せず、直接実施例と同様のエポキシ樹脂を含
浸、乾燥してプリプレグを得、これを実施例と同
条件で加熱加圧成形した。
実施例、従来例で得た積層板の特性をJIS−Ｃ
−6481に準拠して測定した結果を第２表に示す。[Table] Next, examples of the present invention will be described. Example: 12% by weight of water-soluble epoxy resin attached to a mixed paper base material with a weight ratio of (glass/manila hemp) = 90/10
It was impregnated and dried. The water-soluble epoxy resin was composed of 50 parts by weight of Syodyne 80MF (trade name, manufactured by Kyoeisha Yushi Kagaku Kogyo Co., Ltd.), 2 parts by weight of dicyandiamide (DICY), 0.3 parts by weight of benzyldimethylamino (BDMA), and a silane compound (KBM-
403) 1 weight by weight. Next, apply the total amount of epoxy resin to the above impregnated base material.
It was impregnated to a concentration of 60% by weight and dried to obtain a prepreg. This epoxy resin is Epon 1045 (trade name,
4 parts by weight of DICY and 0.5 parts by weight of BDMA were added to 100 parts by weight (manufactured by Yuka Ciel Epoxy Co., Ltd.). The above prepregs are laminated at a temperature of 170℃ and a pressure of 80℃.
Heat and pressure molding was carried out for 30 minutes at Kg/cm 2 . Conventional Example The same base material as in the example was not impregnated with the water-soluble epoxy resin, but was directly impregnated with the same epoxy resin as in the example, dried to obtain a prepreg, and this was molded under heat and pressure under the same conditions as in the example. . The characteristics of the laminates obtained in the example and conventional example were determined by JIS-C.
Table 2 shows the results measured in accordance with -6481.
【表】
第２表からわかるように、本発明によつて得ら
れた積層板は、従来のものに比べ吸湿による電気
抵抗の劣化が小さく、吸水率が小さいことから電
気絶縁性及び耐湿性において極めて優れたもので
ある点、その工業的価値は甚大である。[Table] As can be seen from Table 2, the laminate obtained by the present invention has less deterioration in electrical resistance due to moisture absorption than conventional laminates, and has low water absorption, so it has good electrical insulation and moisture resistance. It is extremely excellent, and its industrial value is enormous.
Claims (1)
を併せ有するシラン化合物を添加した水溶性エポ
キシ樹脂をセルロース繊維混抄ガラス不織布基材
に含浸乾燥し、次いで該含浸基材にエポキシ樹脂
を含浸乾燥して得たプリプレグを積層成形するこ
とを特徴とする積層板の製造法。1 Obtained by impregnating and drying a cellulose fiber-mixed glass nonwoven fabric base material with a water-soluble epoxy resin to which a silane compound having both an alkoxy group and an epoxy group or an amino group was added, and then impregnating and drying the epoxy resin into the impregnated base material. A method for manufacturing a laminate, characterized by laminating and molding prepreg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13617083A JPS6028434A (en) | 1983-07-26 | 1983-07-26 | Preparation of laminate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13617083A JPS6028434A (en) | 1983-07-26 | 1983-07-26 | Preparation of laminate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6028434A JPS6028434A (en) | 1985-02-13 |
| JPH0129375B2 true JPH0129375B2 (en) | 1989-06-09 |
Family
ID=15168956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13617083A Granted JPS6028434A (en) | 1983-07-26 | 1983-07-26 | Preparation of laminate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6028434A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61296199A (en) * | 1985-06-20 | 1986-12-26 | 山陽国策パルプ株式会社 | Raw paper form electric insulating laminate board |
| JPH02127593A (en) * | 1988-11-07 | 1990-05-16 | Sanyo Kokusaku Pulp Co Ltd | Laminate base paper and production thereof |
| JP4489391B2 (en) * | 2003-08-06 | 2010-06-23 | 学校法人同志社 | Method for producing natural fiber reinforced polymer composite material |
| JP2011246592A (en) * | 2010-05-26 | 2011-12-08 | Panasonic Electric Works Co Ltd | Molding material and molding |
-
1983
- 1983-07-26 JP JP13617083A patent/JPS6028434A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6028434A (en) | 1985-02-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4559264A (en) | Synthetic mica products | |
| JPH01141925A (en) | Improved composite material using para-oriented aramide fiber sheet as base material | |
| JP7680961B2 (en) | Layered high porosity material | |
| DE1494381A1 (en) | Heat bonding resins for the manufacture of composite articles | |
| JPS6028434A (en) | Preparation of laminate | |
| EP0182589A3 (en) | Compatible polyimide resin blends, process for their preparation and their use | |
| CN119974134A (en) | A preparation process of plywood with waterproof and flame retardant properties | |
| KR102290676B1 (en) | Aqueous binder composition and fibrous materials using the same | |
| US2664377A (en) | Method of impregnating and laminating fibrous materials with lignin | |
| US4043954A (en) | Compositions and laminates made therefrom | |
| EP0049128A1 (en) | Insulated electrical coil | |
| JPH0218689B2 (en) | ||
| SU878081A1 (en) | Electrically insulated tape and method for making same | |
| JPS6021696B2 (en) | Manufacturing method of laminates | |
| RU2003119948A (en) | METHOD FOR MANUFACTURING FABRIC INTERLAYS FOR FORMED ARTICLES WITH BINDING ON THE BASIS OF SYNTHETIC RESIN, AND ALSO THE IMPROVING AGENT FOR SUCH FABRIC INTERFACES | |
| JPS5929604B2 (en) | Manufacturing method of laminates | |
| JPS5971332A (en) | Resin-impregnated laminated paper board and its manufacture | |
| JPS6237483B2 (en) | ||
| US3923725A (en) | Method for forming epoxy resin products | |
| JPS6026706B2 (en) | Epoxy resin copper clad laminate | |
| JPH02185403A (en) | Improved organic board | |
| JPH07216112A (en) | Preparation of aramid fiber-based laminated sheet | |
| JPS58104928A (en) | Preparation of laminated board | |
| GB732260A (en) | Improvements in and relating to resin-impregnated mica paper insulation | |
| CN115179382A (en) | Moisture-proof furniture and manufacturing process thereof |