JPS61183346A - Production of phenolic resin molding material - Google Patents

Production of phenolic resin molding material

Info

Publication number
JPS61183346A
JPS61183346A JP2394285A JP2394285A JPS61183346A JP S61183346 A JPS61183346 A JP S61183346A JP 2394285 A JP2394285 A JP 2394285A JP 2394285 A JP2394285 A JP 2394285A JP S61183346 A JPS61183346 A JP S61183346A
Authority
JP
Japan
Prior art keywords
molding material
phenolic resin
resin molding
shielding effect
aluminum flake
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
Application number
JP2394285A
Other languages
Japanese (ja)
Inventor
Yoshiharu Ito
伊藤 吉春
Takashi Konya
紺谷 隆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP2394285A priority Critical patent/JPS61183346A/en
Publication of JPS61183346A publication Critical patent/JPS61183346A/en
Pending legal-status Critical Current

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  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE:To obtain the title resin molding material which gives electromagnetic wave-shielding moldings having an excellent shielding effect, excellent flexural strength, etc., by kneading a phenolic resin compsn. for molding material, crushing it and mixing aluminum flake therewith. CONSTITUTION:Additives such as hardener (e.g. hexamine), parting agent (e.g. stearic acid), filler (e.g. pulp or glass fiber), colorant, etc. are blended with a phenolic resin. The resulting compsn. is kneaded and crushed, and aluminum flake is added thereto. If desired, the mixture is granulated in a Henschel mixer to obtain the desired phenolic resin molding material. In this way, the aluminum flake having a good shielding effect is neither cut nor crushed and can be incorporated in the molding resin, and molding having an excellent shielding effect can be obtd.

Description

【発明の詳細な説明】[Detailed description of the invention]

〔技術分野〕 本発明は電磁波シールド用成形品を得るためのフェノー
ル樹脂成形材料の製造方法に関するものである。 〔背景技術〕 従来、電磁波シールド用成形品を得るためのフェノール
樹脂成形材料にはアルミニウム繊維や真鍮繊維等の金属
繊維を含有せしめてbたが、フェノール樹脂成形材料製
造工程での混練、混合工程で金属繊維は容易に切断、粉
砕され充分なシールド性を発揮して論なかった。
[Technical Field] The present invention relates to a method for producing a phenolic resin molding material for obtaining a molded article for electromagnetic shielding. [Background technology] Conventionally, metal fibers such as aluminum fibers and brass fibers have been contained in phenolic resin molding materials for obtaining molded products for electromagnetic shielding, but the kneading and mixing steps in the phenolic resin molding material production process The metal fibers were easily cut and crushed, and exhibited sufficient shielding properties.

【発明の目的】[Purpose of the invention]

本発明の目的とするところはシールド効果に優れた成形
品を得ることのできるフェノール樹脂成形材料の製造方
法を提供することにある。 〔発明の開示〕 本発明は成形材料用フェノール樹脂組成物を混練、粉砕
後、アルミニウムフレークを添加して混合し、更に必要
に応じてヘンシェルミキサーで造粒することを特徴とす
るフェノール樹脂成形材料の製造方法であるため、シー
ルド性のよ込アルミニウムフレークを切断、粉砕するこ
となくフェノール樹脂成形材料中に含有せしめることが
できるのでシールド効果に優れた成形品を提供すること
ができるもので、更にヘンシェルミキサーで造粒するこ
とにより、アルミニウムフレークを切断、粉砕すること
なく造粒できるので計量性を安定化せしめることもでき
るものである。以下本発明の詳細な説明する。 本発明に用いるアルミニウムフレークとしては形状、寸
法を特に限定するものではなく任意であり、添加蓋も必
要とするシールド効果により選択できるものであるが好
ましくは全量の10〜70重量%(以下単に係と記す)
添加することが望ましい。即ちto tib未満ではシ
ールド効果が小さくなる傾向にあp 、 70 %をこ
えると曲げ強度が低下する傾向にあるからである。アル
ミニウム以外の充填剤としては、綿、パルプ、木粉、ポ
リビニルアルコール繊維、ポリアミド繊維、ポリエステ
ル繊維、ポリウレタン繊維、ガラス繊維、アスベスト繊
維、ロックウール繊維等の繊維質充填剤や炭酸カルシウ
ム、水酸化ナトリウム、シリカ、炭酸ヤグネシウム、タ
ルク、クレー等の無機粉末充填剤等を必要に応じて添加
することができるものである。フェノール樹脂トしては
、フェノール、クレゾール、キシレノール等のフェノー
ル類の単独、混合物力らなるフェノール樹脂、更にはフ
ェノールと相溶性のあるナフタリン、糖蜜、エポキシ等
による変性フェノール樹脂であってもよい。上記アルミ
ニウムフレーク、フェノール樹脂以外の添加剤としては
通常用いられるヘキサミン等の硬化剤、離型剤、着色剤
、補強剤、充填剤を用いることができ、更に分散性を向
上せしめるため必要に応じてアミノシラン表面処理剤等
を用いることもできる。 かくしてアルミニウムフレーク以外の配合物をロール、
ニーター等で混練してから20Gメツシュバス程度に粉
砕後、アルミニウムフレークを添加して混合し、更に必
要に応じてヘンシェルミキサーで造粒してフェノール樹
脂成形材料を得るものである。 以下本発明を実施例にもとすいて説明する。 実施例1と2及び比較例 第1表の配合表にもとづきアルミニウムフレーク以外の
配合物をロール混練後、20Gメツシユバスに粉砕した
。比較例につhてはそのまま成形材料とし、実施例1と
2については更にアルミニウムフレークを添加して混合
し光。実施例1についてはそのまま成形材料とし、実施
例2にっ−では更にヘンシェルミキサーで造粒して成形
材料とした。 第1表 実施例3 実施例1のアルミニウムフレーク以外の配合物を150
メフシニバス、200メツシユオンにした以外は実施例
1と同様に処理して成形材料を得た。 〔発明の効果〕 実施例1乃至3と比較例のフェノール樹脂成形材料の計
量性及び得られた成形品のシールド効果、曲げ強度は第
2表で明白なように本発明によるものの性能はよく、本
発明のフェノール樹脂成形材料の製造方法の優れて込る
ことを確認した。
An object of the present invention is to provide a method for producing a phenolic resin molding material, which makes it possible to obtain molded products with excellent shielding effects. [Disclosure of the Invention] The present invention provides a phenolic resin molding material, which is characterized in that a phenolic resin composition for molding material is kneaded and pulverized, then aluminum flakes are added and mixed, and if necessary, granulated with a Henschel mixer. This manufacturing method allows the shielding aluminum flakes to be incorporated into the phenolic resin molding material without cutting or pulverizing them, making it possible to provide molded products with excellent shielding effects. By granulating the aluminum flakes with a Henschel mixer, the aluminum flakes can be granulated without cutting or pulverizing them, thereby making it possible to stabilize the meterability. The present invention will be explained in detail below. The shape and size of the aluminum flakes used in the present invention are not particularly limited and can be selected depending on the required shielding effect, but preferably 10 to 70% by weight of the total amount (hereinafter simply referred to as "related"). )
It is desirable to add. That is, if it is less than to tib, the shielding effect tends to decrease, and if it exceeds 70%, the bending strength tends to decrease. Fillers other than aluminum include fibrous fillers such as cotton, pulp, wood flour, polyvinyl alcohol fiber, polyamide fiber, polyester fiber, polyurethane fiber, glass fiber, asbestos fiber, and rock wool fiber, calcium carbonate, and sodium hydroxide. If necessary, inorganic powder fillers such as silica, yagnesium carbonate, talc, and clay can be added. The phenol resin may be a phenol resin consisting of a single phenol or a mixture of phenols such as phenol, cresol, and xylenol, or a phenol resin modified with naphthalene, molasses, epoxy, etc., which are compatible with phenol. As additives other than the aluminum flakes and phenolic resin, commonly used curing agents such as hexamine, mold release agents, colorants, reinforcing agents, and fillers can be used, and if necessary, to further improve dispersibility. An aminosilane surface treatment agent or the like may also be used. Thus, rolls of formulations other than aluminum flakes,
After kneading with a kneader or the like and pulverizing to about 20G mesh bath, aluminum flakes are added and mixed, and if necessary, the mixture is granulated with a Henschel mixer to obtain a phenolic resin molding material. The present invention will be explained below using examples. Based on the recipe of Examples 1 and 2 and Comparative Example Table 1, the ingredients other than the aluminum flakes were kneaded with rolls and then ground into a 20G mesh bath. Comparative Examples were used as molding materials as they were, and Examples 1 and 2 were further mixed with aluminum flakes. In Example 1, the material was used as a molding material, and in Example 2, it was further granulated using a Henschel mixer to obtain a molding material. Table 1 Example 3 Compounds other than the aluminum flakes of Example 1
A molding material was obtained by processing in the same manner as in Example 1 except that the mesh size was 200 mesh. [Effects of the Invention] As is clear from Table 2, the phenolic resin molding materials of Examples 1 to 3 and the comparative example had good performance in terms of the metric properties, the shielding effect, and the bending strength of the molded products according to the present invention. The advantages of the method for producing a phenolic resin molding material of the present invention were confirmed.

Claims (1)

【特許請求の範囲】[Claims] (1)成形材料用フェノール樹脂組成物を混練、粉砕後
、アルミニウムフレークを添加して混合し、更に必要に
応じてヘンシェルミキサーで造粒することを特徴とする
フェノール樹脂成形材料の製造方法。
(1) A method for producing a phenolic resin molding material, which comprises kneading and pulverizing a phenolic resin composition for molding material, adding and mixing aluminum flakes, and further granulating with a Henschel mixer if necessary.
JP2394285A 1985-02-08 1985-02-08 Production of phenolic resin molding material Pending JPS61183346A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2394285A JPS61183346A (en) 1985-02-08 1985-02-08 Production of phenolic resin molding material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2394285A JPS61183346A (en) 1985-02-08 1985-02-08 Production of phenolic resin molding material

Publications (1)

Publication Number Publication Date
JPS61183346A true JPS61183346A (en) 1986-08-16

Family

ID=12124585

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2394285A Pending JPS61183346A (en) 1985-02-08 1985-02-08 Production of phenolic resin molding material

Country Status (1)

Country Link
JP (1) JPS61183346A (en)

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