JPH08176400A - Phenolic resin molding material - Google Patents
Phenolic resin molding materialInfo
- Publication number
- JPH08176400A JPH08176400A JP32307094A JP32307094A JPH08176400A JP H08176400 A JPH08176400 A JP H08176400A JP 32307094 A JP32307094 A JP 32307094A JP 32307094 A JP32307094 A JP 32307094A JP H08176400 A JPH08176400 A JP H08176400A
- Authority
- JP
- Japan
- Prior art keywords
- molding material
- resin molding
- phenolic resin
- phenol resin
- cured
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はフェノール樹脂成形材料
に関し、従来、廃棄されていた成形材料の硬化物を粉砕
し、これを通常の方法で得られたフェノール成形材料に
配合してなるフェノール樹脂成形材料に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a phenolic resin molding material, and a phenolic resin obtained by pulverizing a hardened material of a molding material that has been conventionally discarded and blending it with a phenolic molding material obtained by an ordinary method. It relates to a molding material.
【０００２】[0002]
【従来の技術】フェノール樹脂成形材料は、自動車、電
機、機械の構造部品あるは摺動部品等の機械部品、ある
いは食器や厨房用耐熱部品等に広く使用されている。フ
ェノール樹脂成形材料を用いて成形品を成形する場合、
成形方法によるが、例えばトランスファ成形の場合で
は、成形品の他にカル、ランナーといわれる成形材料硬
化物が発生する。この硬化物は現在廃棄されることが多
いが、場合によっては１００メッシュ以下程度に微粉砕
して、成形材料の原料の一部として、フェノール樹脂に
有機・無機充填材とともに配合され、溶融混練して使用
されている。この他、研磨材、接着剤等の増量材などへ
の使用が検討されている。2. Description of the Related Art Phenolic resin molding materials are widely used for mechanical parts such as structural parts of automobiles, electric machines and machines, sliding parts, heat-resistant parts for tableware and kitchens. When molding a molded product using a phenolic resin molding material,
Depending on the molding method, for example, in the case of transfer molding, cured products of molding material called cull and runner are generated in addition to the molded product. This cured product is often discarded at present, but in some cases it is finely pulverized to a size of 100 mesh or less, blended with a phenol resin together with an organic / inorganic filler as a part of a raw material of a molding material, and melt-kneaded. Is being used. In addition to this, use in abrasives, bulking materials such as adhesives, and the like is being studied.
【０００３】[0003]
【発明が解決しようとする課題】このように、フェノー
ル樹脂成形材料を使用して成形する過程で発生するカ
ル、ランナー等の硬化物は種々の再使用が検討され、一
部実用化されているが、現状廃棄される部分が多く、よ
り多く使用される有効な再利用法が望まれていた。本発
明は、通常の方法で得られたフェノール樹脂成形材料に
前記硬化物の粉砕物を配合することにより、通常のフェ
ノール樹脂成形材料と実質的に同一の性能を有するフェ
ノール樹脂成形材料を得たものである。このような方法
は従来では良好な特性を得ることは不可能と考えられて
いたものである。As described above, various reuses of the cured products such as cull and runner generated in the process of molding using the phenol resin molding material have been studied, and some of them have been put to practical use. However, there are many parts that are currently discarded, and an effective reuse method that is used more often has been desired. The present invention obtains a phenol resin molding material having substantially the same performance as a normal phenol resin molding material by blending the pulverized product of the cured product with the phenol resin molding material obtained by the usual method. It is a thing. It has been conventionally considered that such a method cannot obtain good characteristics.
【０００４】[0004]
【課題を解決するための手段】本発明は、フェノール樹
脂と有機充填材及び／又は無機充填材とを必須成分とし
て含有するフェノール樹脂組成物から通常の方法により
混合ないし混練し粉砕して得られたフェノール樹脂成形
材料に対して、前記フェノール樹脂成形材料と同種又は
異種のフェノール樹脂成形材料硬化物の粉砕物を混合し
てなることを特徴とするフェノール樹脂成形材料であ
る。The present invention is obtained by mixing or kneading and pulverizing a phenol resin composition containing a phenol resin and an organic filler and / or an inorganic filler as essential components by an ordinary method. The phenol resin molding material is characterized in that a pulverized product of the phenol resin molding material, which is the same kind as or different from the phenol resin molding material, or a cured product of the phenol resin molding material is mixed.
【０００５】通常フェノール樹脂成形材料は次のように
して製造される。フェノール樹脂、必要によりヘキサメ
チレンテトラミン等の硬化剤、木粉、パルプ等の有機充
填材及び／又はガラス繊維、シリカ、炭酸カルシウム、
クレー等の繊維状または粉末状無機充填材を主成分とし
て、この他、通常硬化助剤としてのアルカリ土類金属の
酸化物又は水酸化物、そして顔料、離型剤等を配合し、
ロールや一軸又は二軸押出機等の加熱混練装置、あるい
はヘンシェルミキサー等の加熱高速攪拌装置により加熱
下で混練なしい混合し、その後粉砕し所定の粒度に調整
して得られる。Usually, a phenol resin molding material is manufactured as follows. Phenolic resin, if necessary a curing agent such as hexamethylenetetramine, organic filler such as wood powder, pulp and / or glass fiber, silica, calcium carbonate,
A fibrous or powdered inorganic filler such as clay as a main component, in addition to this, usually an alkaline earth metal oxide or hydroxide as a curing aid, and a pigment, a release agent, and the like,
It can be obtained by kneading and mixing under heating with a heating and kneading device such as a roll or a single-screw or twin-screw extruder or a heating and high-speed stirring device such as a Henschel mixer, and then pulverizing and adjusting to a predetermined particle size.
【０００６】このようにして得られたフェノール樹脂成
形材料は、射出成形、トランスファ成形、圧縮成形等に
より所望の成形品に成形される。この際、射出成形で
は、成形品の他にスプルー、ランナーが発生し、トラン
スファ成形ではカル、ランナーが発生する。両者とも既
に硬化しており、そのままで再利用は不可能である。本
発明においては、このようなカル、ランナー等のフェノ
ール樹脂成形材料の硬化物を粉砕して、上記のように通
常の方法で得られたフェノール樹脂成形材料に添加し、
均一に混合する。The phenol resin molding material thus obtained is molded into a desired molded product by injection molding, transfer molding, compression molding or the like. At this time, sprue and runner are generated in addition to the molded product in injection molding, and cull and runner are generated in transfer molding. Both have already hardened and cannot be reused as they are. In the present invention, such a cal, crushed a cured product of a phenol resin molding material such as runner, and added to the phenol resin molding material obtained by the usual method as described above,
Mix evenly.
【０００７】なお、本発明において、フェノール樹脂成
形材料の硬化物（以下、成形材料硬化物という）は、射
出成形において発生するスプルー、ランナー、トランス
ファ成形において発生するカル、ランナー、及びフェノ
ール樹脂成形材料からなる各種成形品、テストピースな
どが含まれる。In the present invention, a cured product of a phenol resin molding material (hereinafter referred to as a cured molding material) is a sprue or runner generated in injection molding, a cull or runner generated in transfer molding, and a phenol resin molding material. Includes various molded products and test pieces.
【０００８】成形材料硬化物の粉砕には、カッターミ
ル、ターボミル、ハンマーミル等の通常の粉砕機が使用
できる。粉砕物の粒度は、最終的に得られるフェノール
樹脂成形材料の特性、粉砕物の取扱いの容易さ、作業環
境等の点から、通常粒径０．１〜０．５ｍｍ程度とする
のが好ましい。この粒径のものは粉砕と同時にふるい分
けして得ることができる。粒径０．１ｍｍ以下のものは
粉塵となりやすく成形材料の取扱いや作業環境を悪化さ
せるので好ましくない。一方粒径０．５ｍｍ以上では成
形品とした時その外観や特性を低下させる恐れがある。
好ましい粒径は０．２〜０．３５ｍｍである。For crushing the cured molding material, a usual crusher such as a cutter mill, a turbo mill or a hammer mill can be used. It is preferable that the particle size of the pulverized product is usually about 0.1 to 0.5 mm in view of the characteristics of the finally obtained phenol resin molding material, the ease of handling the pulverized product, the working environment, and the like. The particles having this particle size can be obtained by sieving at the same time as grinding. Those having a particle size of 0.1 mm or less are not preferable because they easily become dust and deteriorate the handling of the molding material and the working environment. On the other hand, if the particle size is 0.5 mm or more, the appearance and characteristics of the molded product may be deteriorated.
A preferred particle size is 0.2 to 0.35 mm.
【０００９】成形材料硬化物の混合割合は、最終的に得
られるフェノール樹脂成形材料の１〜１５重量％であ
る。１重量％以下でも差し支えないが、成形材料硬化物
の再利用という点からみて効率的ではない。１５重量％
以上では成形品の諸特性に対し悪い影響を与えるように
なる。特に好ましい混合割合は５〜１０重量％であり、
この範囲では成形材料硬化物を混合しないものと実質的
に同等の特性の成形材料を得ることができる。The mixing ratio of the cured molding material is 1 to 15% by weight of the finally obtained phenol resin molding material. Although 1% by weight or less is acceptable, it is not efficient in terms of reuse of a cured product of the molding material. 15% by weight
With the above, various properties of the molded product are adversely affected. A particularly preferable mixing ratio is 5 to 10% by weight,
Within this range, it is possible to obtain a molding material having substantially the same characteristics as those obtained by mixing no cured molding material.
【００１０】[0010]
【実施例】以下、本発明を実施例により具体的に説明す
る。「部」は「重量部」を示す。EXAMPLES The present invention will be specifically described below with reference to examples. "Part" indicates "part by weight".
【００１１】＜実施例１＞以下の配合にて通常の加熱ロ
ール混練によりフェノール樹脂成形材料〔Ａ〕を得た。 ノボラック型フェノール樹脂 ３５部 ヘキサメチレンテトラミン ６ ガラス繊維 ５５ 硬化助剤（ＭｇＯ） ２ その他（顔料、離型剤等） ２ このフェノール樹脂成形材料〔Ａ〕を用いてトランスフ
ァ成形した際に生じたカル、ランナーをカッターミルに
て粉砕し、ふるい分けして粒径０．２〜０．３５ｍｍの
成形材料硬化物を得た。フェノール樹脂成形材料〔Ａ〕
と成形材料硬化物とを表１に示す割合でそれぞれ混合し
てフェノール樹脂成形材料を得た。各成形材料について
トランスファ成形にてテストピースを作製し、外観の観
察及び機械的強度の測定を行い、その結果を表１に示
す。<Example 1> A phenol resin molding material [A] was obtained by the conventional heating roll kneading with the following composition. Novolac type phenolic resin 35 parts Hexamethylenetetramine 6 Glass fiber 55 Curing aid (MgO) 2 Others (pigment, mold release agent, etc.) 2 Cal generated during transfer molding using this phenolic resin molding material [A], The runner was crushed with a cutter mill and sieved to obtain a cured molding material having a particle size of 0.2 to 0.35 mm. Phenolic resin molding material [A]
And a cured molding material were mixed at a ratio shown in Table 1 to obtain a phenol resin molding material. A test piece was prepared from each molding material by transfer molding, and the appearance was observed and the mechanical strength was measured, and the results are shown in Table 1.
【００１２】[0012]
【表１】 [Table 1]
【００１３】＜実施例２＞以下の配合にて通常の加熱ロ
ール混練によりフェノール樹脂成形材料〔Ｂ〕を得た。 ノボラック型フェノール樹脂 ４５部 ヘキサメチレンテトラミン ７ 木粉 ３０ 炭酸カルシウム １２ 硬化助剤（Ｃａ（ＯＨ)2 ） ３ その他（顔料、離型剤等） ３ このフェノール樹脂成形材料〔Ｂ〕を用いて、実施例１
の場合と同様にして粒径０．２〜０．３５ｍｍの成形材
料硬化物を得た。前記フェノール樹脂成形材料〔Ｂ〕と
その成形材料硬化物とを表２に示す割合でそれぞれ混合
してフェノール樹脂成形材料を得た。以下、実施例１と
同様にして性能測定を行い、その結果を表２に示す。Example 2 A phenol resin molding material [B] was obtained by the usual heating roll kneading with the following composition. Novolac type phenolic resin 45 parts Hexamethylenetetramine 7 Wood powder 30 Calcium carbonate 12 Curing aid (Ca (OH) 2 ) 3 Others (pigment, release agent, etc.) 3 Implemented using this phenolic resin molding material [B] Example 1
A cured product of the molding material having a particle size of 0.2 to 0.35 mm was obtained in the same manner as in the above. The phenol resin molding material [B] and the cured molding material thereof were mixed at the ratios shown in Table 2 to obtain a phenol resin molding material. Hereinafter, performance measurement was performed in the same manner as in Example 1, and the results are shown in Table 2.
【００１４】[0014]
【表２】 [Table 2]
【００１５】なお、特性において、外観は目視による観
察、曲げ強さ及びシャルピー衝撃強さはＪＩＳ Ｋ ６９
１１により行った。In terms of characteristics, the appearance is visually observed, and the bending strength and the Charpy impact strength are JIS K 69.
11 was performed.
【００１６】[0016]
【発明の効果】本発明のフェノール樹脂成形材料は、成
形材料硬化物が混合されているにもかかわらず、成形材
料硬化物が混合されていないものに比較して外観上全く
同等であり、機械的特性も実質的に同等である。従っ
て、従来、多くは廃棄されていた成形材料硬化物の再利
用に大きく貢献するものである。INDUSTRIAL APPLICABILITY The phenolic resin molding material of the present invention is completely equivalent in appearance to the one in which the cured molding material is not mixed, although the cured molding material is mixed. Characteristics are substantially the same. Therefore, it greatly contributes to the reuse of cured products of molding materials that have been discarded in the past.
Claims (3)
無機充填材とを必須成分として含有するフェノール樹脂
組成物から通常の方法により混合ないし混練し粉砕して
なるフェノール樹脂成形材料に対して、前記フェノール
樹脂成形材料と同種又は異種のフェノール樹脂成形材料
硬化物の粉砕物を混合してなることを特徴とするフェノ
ール樹脂成形材料。1. A phenol resin molding material obtained by mixing or kneading and pulverizing a phenol resin composition containing a phenol resin and an organic filler and / or an inorganic filler as essential components by an ordinary method. A phenol resin molding material comprising a mixture of a phenol resin molding material and a crushed product of the same kind or different kind of a phenol resin molding material.
ｍｍである請求項１記載のフェノール樹脂成形材料。2. The particle size of the pulverized product of the cured product is 0.1 to 0.5.
The phenol resin molding material according to claim 1, which has a size of mm.
体に対して１〜１５重量％である請求項１記載のフェノ
ール樹脂成形材料。3. The phenol resin molding material according to claim 1, wherein the compounding ratio of the pulverized product of the cured product is 1 to 15% by weight based on the whole molding material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32307094A JPH08176400A (en) | 1994-12-26 | 1994-12-26 | Phenolic resin molding material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32307094A JPH08176400A (en) | 1994-12-26 | 1994-12-26 | Phenolic resin molding material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08176400A true JPH08176400A (en) | 1996-07-09 |
Family
ID=18150756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32307094A Pending JPH08176400A (en) | 1994-12-26 | 1994-12-26 | Phenolic resin molding material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08176400A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002080692A (en) * | 2000-09-06 | 2002-03-19 | Asahi Kasei Corp | Phenolic resin composition |
-
1994
- 1994-12-26 JP JP32307094A patent/JPH08176400A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002080692A (en) * | 2000-09-06 | 2002-03-19 | Asahi Kasei Corp | Phenolic resin composition |
| JP4493189B2 (en) * | 2000-09-06 | 2010-06-30 | 旭化成建材株式会社 | Phenolic resin composition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20040312 |