JP2001151983A - Phenolic resin molding material and molded pulley prepared therefrom - Google Patents
Phenolic resin molding material and molded pulley prepared therefromInfo
- Publication number
- JP2001151983A JP2001151983A JP33127399A JP33127399A JP2001151983A JP 2001151983 A JP2001151983 A JP 2001151983A JP 33127399 A JP33127399 A JP 33127399A JP 33127399 A JP33127399 A JP 33127399A JP 2001151983 A JP2001151983 A JP 2001151983A
- Authority
- JP
- Japan
- Prior art keywords
- molding material
- phenolic resin
- resin molding
- organic filler
- pulley
- 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
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- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明はフェノール樹脂成形
材料に関し、特に自動車のエンジン部品等に用いられる
樹脂製プーリーの製造に適す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 more particularly to a phenolic resin molding material suitable for manufacturing resin pulleys used for automobile engine parts and the like.
【0002】[0002]
【従来の技術】従来、プーリー類は金属製のものが主で
あったが、近年の自動車部品の小型軽量化及び低コスト
化にともなって樹脂化が進んでいる。樹脂製プーリーは
通常金属製のボスの外側に環状のプーリー成形品(樹脂
製プーリー本体)が嵌め込まれた構造を有しており、プ
ーリー成形品としては、フェノール樹脂にガラス繊維等
の無機繊維を配合したフェノール樹脂成形材料からなる
ものが多く使用されている。2. Description of the Related Art Conventionally, pulleys are mainly made of metal. However, with the recent reduction in size and weight of automobile parts and reduction in cost, the use of resin is progressing. A resin pulley usually has a structure in which an annular pulley molded product (resin pulley body) is fitted to the outside of a metal boss. As the pulley molded product, phenolic resin is made of inorganic fiber such as glass fiber. A material composed of a blended phenolic resin molding material is often used.
【0003】[0003]
【発明が解決しようとする課題】上記のガラス繊維等の
無機繊維を配合したフェノール樹脂成形材料からなるプ
ーリー成形品は、砂埃等のダスト環境下での使用では表
面の摩耗が激しく耐用性に劣るという問題、及びベルト
等の相手剤材を摩耗させ易いという問題があった。A pulley molded product made of a phenolic resin molding material containing the above-mentioned inorganic fiber such as glass fiber has a severe surface wear when used in a dusty environment such as dust and is inferior in durability. And the problem that the partner material such as a belt is easily worn.
【0004】本発明は、上記の問題点を解決することを
目的としてなされたものであり、耐摩耗性が良好であっ
て、且つベルト攻撃性が小さいプーリー成形品が得られ
るフェノール樹脂成形材料を提供すること、及びその成
形材料を用いたプーリー成形品を提供することを目的と
するものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a phenolic resin molding material capable of obtaining a pulley molded product having good wear resistance and low belt attack. It is an object of the present invention to provide a pulley molded product using the molding material.
【0005】[0005]
【課題を解決するための手段】請求項1に係る発明のフ
ェノール樹脂成形材料は、フェノール樹脂と、無機繊維
を含有してなるフェノール樹脂成形材料において、フェ
ノール樹脂成形材料の全量に対し、メラミン樹脂の硬化
物からなる有機充填材を5〜25重量%含有しているこ
とを特徴とするフェノール樹脂成形材料である。The phenolic resin molding material according to the first aspect of the present invention is a phenolic resin molding material containing a phenolic resin and an inorganic fiber. A phenolic resin molding material containing 5 to 25% by weight of an organic filler composed of a cured product of the above.
【0006】請求項1に係る発明のフェノール樹脂成形
材料には、メラミン樹脂の硬化物からなる有機充填材を
含有していて、そのベースであるメラミン樹脂は、各種
の樹脂の中では硬度が最も高いレベルにあることから、
成形品の表面状態の改質作用がある。The phenolic resin molding material according to the first aspect of the present invention contains an organic filler composed of a cured melamine resin, and the melamine resin as a base thereof has the highest hardness among various resins. Being at a high level,
It has the effect of modifying the surface state of the molded article.
【0007】請求項2に係る発明のフェノール樹脂成形
材料は、メラミン樹脂の硬化物からなる有機充填材が、
メラミン樹脂成形材料の成形工程で生じたロス材を粉砕
した粉体である請求項1記載のフェノール樹脂成形材料
である。メラミン樹脂成形材料の成形工程で生じたロス
材としては、カル、ランナー、成形不良品等があるが、
通常これらは廃棄処理されるものなので、このロス材を
原料として使用することは、資源の有効活用に寄与す
る。The phenolic resin molding material of the invention according to claim 2 is characterized in that an organic filler comprising a cured product of melamine resin comprises:
The phenolic resin molding material according to claim 1, which is a powder obtained by pulverizing a loss material generated in a molding step of the melamine resin molding material. As the loss material generated in the molding process of the melamine resin molding material, there are culls, runners, defective molding products, etc.
Since these are usually disposed of, the use of this lost material as a raw material contributes to effective utilization of resources.
【0008】請求項3に係る発明のフェノール樹脂成形
材料は、メラミン樹脂の硬化物からなる有機充填材の粒
径が100μm以下である請求項1記載のフェノール樹
脂成形材料である。有機充填材の粒径が100μm以下
であると、材料混練時の分散性が良好となる。[0008] The phenolic resin molding material of the invention according to claim 3 is the phenolic resin molding material according to claim 1, wherein the particle size of the organic filler composed of a cured melamine resin is 100 µm or less. When the particle size of the organic filler is 100 μm or less, the dispersibility during kneading of the materials is improved.
【0009】請求項4に係る発明のプーリー成形品は、
請求項1乃至請求項3の何れかに記載のフェノール樹脂
成形材料を加熱プレスにより成形加工して得られるプー
リー成形品である。According to a fourth aspect of the present invention, there is provided a pulley molded product,
A pulley molded product obtained by molding the phenolic resin molding material according to any one of claims 1 to 3 by a hot press.
【0010】[0010]
【発明の実施の形態】以下、本発明の実施の形態を説明
する。Embodiments of the present invention will be described below.
【0011】本発明のフェノール樹脂成形材料で使用す
るフェノール樹脂としては、ノボラック型、レゾール型
のいずれでもよく、このフェノール樹脂と共に必要に応
じて、硬化剤、ワックス、着色剤等を添加することがで
きる。The phenolic resin used in the phenolic resin molding material of the present invention may be either a novolak type or a resol type, and a curing agent, a wax, a coloring agent and the like may be added together with the phenolic resin, if necessary. it can.
【0012】本発明のフェノール樹脂成形材料で使用す
る無機繊維としてはガラス繊維を使用することができる
が、ガラス繊維の他にカーボン繊維等を使用することも
できる。無機繊維の含有割合については、フェノール樹
脂成形材料の全量に対し、25〜60重量%含有するこ
とが好ましく、25重量%未満では得られる成形品の強
度が低くなり、60重量%を超えるとベルト等の相手材
に対する攻撃性が大きくなるので好ましくない。As the inorganic fibers used in the phenolic resin molding material of the present invention, glass fibers can be used, but carbon fibers and the like can also be used in addition to glass fibers. As for the content ratio of the inorganic fiber, the content is preferably 25 to 60% by weight based on the total amount of the phenolic resin molding material. If the content is less than 25% by weight, the strength of the obtained molded product is low. However, it is not preferable because aggression against the partner material becomes large.
【0013】本発明のフェノール樹脂成形材料では、メ
ラミン樹脂の硬化物からなる有機充填材を、フェノール
樹脂成形材料の全量に対し、5〜25重量%含有する。
ここでいうメラミン樹脂の硬化物とは、その硬化物中に
メラミン樹脂成分を50重量%を超えて含有しているも
のを指していて、メラミン樹脂成分のみの硬化物であっ
てもよく、またパルプ等の充填材を含むメラミン樹脂組
成物の硬化物であってもよい。The phenolic resin molding material of the present invention contains 5 to 25% by weight of an organic filler composed of a cured melamine resin, based on the total amount of the phenolic resin molding material.
The cured product of the melamine resin as used herein refers to a cured product containing more than 50% by weight of the melamine resin component, and may be a cured product of only the melamine resin component, It may be a cured product of a melamine resin composition containing a filler such as pulp.
【0014】このメラミン樹脂の硬化物からなる有機充
填材として、メラミン樹脂成形材料の成形工程で生じた
カル、ランナー、成形不良品等のロス材を粉砕した粉体
を使用すると、従来このロス材は廃棄処分されていたも
のなので、資源の有効活用に寄与することになる。As an organic filler composed of a cured product of the melamine resin, a powder obtained by pulverizing a loss material such as a cal, a runner, and a defective product generated in a molding process of a melamine resin molding material is conventionally used. Has been disposed of, which contributes to the effective use of resources.
【0015】そして、メラミン樹脂の硬化物からなる有
機充填材の含有割合については、フェノール樹脂成形材
料の全量に対し5重量%未満であると、成形品の表面状
態の改質作用が乏しくなって耐摩耗性の改善効果が不十
分となり、25重量%を超える場合には、その改善効果
が飽和することから、5〜25重量%の範囲に限定して
いる。If the content of the organic filler composed of a cured melamine resin is less than 5% by weight with respect to the total amount of the phenolic resin molding material, the effect of modifying the surface condition of the molded product is poor. If the effect of improving wear resistance is insufficient and exceeds 25% by weight, the effect of improvement is saturated, so the range is limited to 5 to 25% by weight.
【0016】このメラミン樹脂の硬化物からなる有機充
填材のベースであるメラミン樹脂は、各種の樹脂の中で
は硬度が最も高いレベルにあり、成形品の表面状態の改
質作用があるが、この有機充填材の代わりに、メラミン
樹脂よりもっと硬度の高いシリカ粉末等の無機充填材を
使用してプーリー成形品とした場合には、成形品の表面
硬度は高くなるが、摩耗時に成形品表面から分離した無
機充填材が摺動面に介在し、研磨材として働いて成形品
表面及びベルト等の相手材を攻撃してしまうため、成形
品の耐摩耗性が悪化してしまう。一方、メラミン樹脂の
硬化物からなる有機充填材は、シリカ粉末等の無機充填
材に比べれば硬度が低く、摩耗時に成形品表面から分離
し、摺動面に介在した場合においても、研磨材として働
くことはなく、成形品表面及びベルト等の相手材への攻
撃性は非常に低い。従って、メラミン樹脂の硬化物から
なる有機充填材を使用した場合には、成形品の耐摩耗性
を損なうことはない。そして、プーリー成形品の場合、
砂埃等の摩耗原因となる物質は主にシリカ系の物質であ
り、この砂埃等が無機繊維の間の樹脂部を選択的に摩耗
させるため、無機繊維が露出してしまい、その結果ベル
ト等の相手材を攻撃する性質が顕著になるが、本発明の
場合には、無機繊維間の樹脂部の耐摩耗性が有機充填材
の作用によって向上するので、砂埃等による摩耗で無機
繊維が露出することが防止され、その結果ベルト等の相
手材を攻撃する性質が低下する。The melamine resin, which is the base of the organic filler composed of a cured product of the melamine resin, has the highest hardness among various resins and has a function of modifying the surface condition of a molded article. When an inorganic filler such as silica powder having a higher hardness than the melamine resin is used instead of the organic filler to make a pulley molded product, the surface hardness of the molded product increases, but the surface of the molded product during abrasion increases. Since the separated inorganic filler intervenes on the sliding surface and acts as an abrasive to attack the surface of the molded product and a mating material such as a belt, the wear resistance of the molded product is deteriorated. On the other hand, an organic filler made of a cured melamine resin has a lower hardness than an inorganic filler such as silica powder, separates from the surface of a molded product when worn, and is used as an abrasive even when interposed on a sliding surface. It does not work and has very low aggressiveness on the surface of the molded product and on the opponent material such as a belt. Therefore, when an organic filler made of a cured product of a melamine resin is used, the wear resistance of a molded product is not impaired. And in the case of a pulley molded product,
Substances that cause wear such as dust are mainly silica-based substances, and the dust and the like selectively wear the resin portion between the inorganic fibers, so that the inorganic fibers are exposed, and as a result, belts and the like are consequently exposed. Although the property of attacking the opponent material becomes remarkable, in the case of the present invention, the abrasion resistance of the resin portion between the inorganic fibers is improved by the action of the organic filler, so that the inorganic fibers are exposed by abrasion due to dust and the like. As a result, the property of attacking a partner material such as a belt is reduced.
【0017】本発明で使用するメラミン樹脂の硬化物か
らなる有機充填材の粒径は100μm以下であると、材
料混練時の分散性が良好となるので好ましい。なお、粒
径の下限については、特に制限はなく、耐摩耗性を損な
わない範囲で選択することができる。It is preferable that the particle size of the organic filler composed of a cured product of the melamine resin used in the present invention is 100 μm or less, since the dispersibility during kneading of the materials becomes good. The lower limit of the particle size is not particularly limited, and can be selected within a range that does not impair the wear resistance.
【0018】また、本発明のフェノール樹脂成形材料に
は、エラストマーを配合することにより、成形品のヤン
グ率を低下させて、耐熱衝撃性を向上させることも可能
である。Further, by blending an elastomer with the phenolic resin molding material of the present invention, it is possible to lower the Young's modulus of the molded article and improve the thermal shock resistance.
【0019】本発明のプーリー成形品は、上記の本発明
のフェノール樹脂成形材料を加熱プレスにより成形加工
して得られるプーリー成形品であり、成形方法について
は直圧成形法等を採用することができる。本発明のプー
リー成形品は無機繊維と共にメラミン樹脂の硬化物から
なる有機充填材を含有させている成形材料を用いて製造
されるので、耐摩耗性が良好であって、且つベルト攻撃
性が小さいプーリー成形品となる。The pulley molded product of the present invention is a pulley molded product obtained by molding the above-mentioned phenolic resin molding material of the present invention by a hot press, and the molding method may be a direct pressure molding method or the like. it can. Since the molded product of the pulley of the present invention is manufactured using a molding material containing an organic filler composed of a cured product of a melamine resin together with inorganic fibers, it has good wear resistance and low belt attack. It becomes a pulley molded product.
【0020】[0020]
【実施例】以下本発明を実施例によって具体的に説明す
る。The present invention will be described below in detail with reference to examples.
【0021】表1、表2に示す配合組成の配合物を均一
に混合した(1分間)後、2軸混練機を用いて、温度:
90〜100℃、混練時間:3分間の条件で加熱混練
し、次いで冷却固化し、粉砕し、造粒してフェノール樹
脂成形材料を得た。After uniformly blending the blends having the blend compositions shown in Tables 1 and 2 (for 1 minute), using a twin-screw kneader, the temperature was:
The mixture was heated and kneaded under conditions of 90 to 100 ° C. and kneading time: 3 minutes, then solidified by cooling, pulverized, and granulated to obtain a phenol resin molding material.
【0022】得られた成形材料を直圧成形して、耐摩耗
性試験用成形品及びベルト攻撃性試験用成形品を得た。
得られた各成形品について、耐摩耗性試験及びベルト攻
撃性試験を下記の測定条件で行い、その結果を表1、表
2に示した。The obtained molding material was subjected to direct pressure molding to obtain a molded product for a wear resistance test and a molded product for a belt attack test.
For each of the obtained molded products, a wear resistance test and a belt attack test were performed under the following measurement conditions, and the results are shown in Tables 1 and 2.
【0023】耐摩耗性試験:JIS規格K6735(テ
ーパー摩耗試験)に基づき、摩耗輪の種類:CS−1
7、テストピース回転速度:60rpmの条件で、10
00回転後の成形品摩耗量(mg)を測定する。Abrasion resistance test: Based on JIS K6735 (taper abrasion test), type of worn wheel: CS-1
7, test piece rotation speed: 10 under the condition of 60 rpm
The wear amount (mg) of the molded article after 00 rotation is measured.
【0024】ベルト攻撃性試験:耐摩耗性試験用成形品
として、100φ×3mmの円盤状の成形品を作製し、
この成形品を60rpmで回転させ、その外周面にベル
トを荷重2kgにて押さえた状態にて、24時間試験を
行い、ベルトの摩耗量(mg)を測定する。Belt aggression test: As a molded product for abrasion resistance test, a disk-shaped molded product of 100φ × 3 mm was prepared.
The molded product is rotated at 60 rpm, and a test is performed for 24 hours in a state where the belt is pressed against the outer peripheral surface thereof with a load of 2 kg, and the abrasion amount (mg) of the belt is measured.
【0025】表1及び表2に示した原材料については次
のものを使用した。フェノール樹脂はフェノールノボラ
ック樹脂(分子量2000〜4000)を使用し、ガラ
ス繊維は平均繊維径:13μm、繊維長:3mmのもの
を使用し、シリカは平均粒径が5μmの球状シリカを使
用し、有機充填材Aはメラミン樹脂成形材料(メラミン
樹脂成分70重量%、パルプ成分30重量%)の成形工
程で生じたカル及びランナーを粉砕した平均粒径約30
μmの粉体(120メッシュ以下であり、最大長さ10
0μm以下を満足)を使用し、有機充填材Bはメラミン
樹脂成分のみの硬化物である日産化学工業社製の平均粒
径約40μmメラミンフィラー(最大長さ100μm以
下)を使用し、硬化剤としてはヘキサメチレンテトラミ
ンを使用した。The following materials were used for the raw materials shown in Tables 1 and 2. Phenol resin is a phenol novolak resin (molecular weight: 2,000 to 4,000), glass fiber is an average fiber diameter: 13 μm, fiber length: 3 mm, and silica is spherical silica having an average particle diameter of 5 μm. Filler A has an average particle diameter of about 30 obtained by pulverizing cal and runner produced in a molding process of a melamine resin molding material (melamine resin component 70% by weight, pulp component 30% by weight).
μm powder (120 mesh or less, maximum length 10
0 μm or less), and the organic filler B is a cured product of only the melamine resin component. The average particle size of about 40 μm melamine filler (maximum length 100 μm or less) manufactured by Nissan Chemical Industries, Ltd. is used. Used hexamethylenetetramine.
【0026】[0026]
【表1】 [Table 1]
【0027】[0027]
【表2】 [Table 2]
【0028】表2に示す比較例1のように、フェノール
樹脂とガラス繊維を主原材料とする成形材料や、比較例
2のようにフェノール樹脂、ガラス繊維及び球状シリカ
を主原材料とする成形材料を用いた成形品では、耐摩耗
性、ベルト攻撃性の両特性が共に大きい結果となってい
る。これに対し、メラミン樹脂の硬化物からなる有機充
填材をガラス繊維と共に含有させている実施例1〜5の
成形材料を用いた成形品は、比較例1、2の結果に比
べ、耐摩耗性、ベルト攻撃性の両特性が良好になってい
ることが確認された。As shown in Comparative Example 1 shown in Table 2, a molding material containing phenol resin and glass fiber as main raw materials and a molding material containing phenol resin, glass fiber and spherical silica as main raw materials as in Comparative Example 2 were used. In the molded article used, both the abrasion resistance and the belt aggressiveness are both large. On the other hand, the molded articles using the molding materials of Examples 1 to 5, in which the organic filler composed of the cured product of the melamine resin is contained together with the glass fiber, have higher abrasion resistance than the results of Comparative Examples 1 and 2. It was confirmed that both characteristics of the belt aggressiveness were good.
【0029】[0029]
【発明の効果】請求項1〜請求項3に係る発明のフェノ
ール樹脂成形材料には、メラミン樹脂の硬化物からなる
有機充填材を特定の配合割合で含有しているので、耐摩
耗性が良好であって、且つベルト攻撃性が小さいプーリ
ー成形品が得られるフェノール樹脂成形材料となる。The phenolic resin molding material according to any one of the first to third aspects of the present invention contains an organic filler composed of a cured product of a melamine resin at a specific compounding ratio, so that the abrasion resistance is good. And a phenolic resin molding material from which a pulley molded article having low belt attack is obtained.
【0030】請求項2に係る発明のフェノール樹脂成形
材料は、耐摩耗性が良好であって、且つベルト攻撃性が
小さいプーリー成形品が得られるフェノール樹脂成形材
料となると共に、ロス材を原料として使用するので、資
源の有効活用に寄与する。The phenolic resin molding material according to the second aspect of the present invention is a phenolic resin molding material having good abrasion resistance and a low pulley molded product with low belt attack. Since it is used, it contributes to effective use of resources.
【0031】請求項3に係る発明のフェノール樹脂成形
材料は、耐摩耗性が良好であって、且つベルト攻撃性が
小さいプーリー成形品が得られるフェノール樹脂成形材
料となると共に材料混練時の分散性が良好となるので成
形品の品質が安定する。The phenolic resin molding material according to the third aspect of the present invention is a phenolic resin molding material having a good abrasion resistance and a small pulley molded article having a low belt attack, and a dispersibility during kneading of the materials. And the quality of the molded article is stabilized.
【0032】請求項4に係る発明のプーリー成形品は、
耐摩耗性が良好であって、且つベルト攻撃性が小さいプ
ーリー成形品となる。The molded product of the pulley of the invention according to claim 4 is:
A pulley molded product having good wear resistance and low belt attack is obtained.
Claims (4)
なるフェノール樹脂成形材料において、フェノール樹脂
成形材料の全量に対し、メラミン樹脂の硬化物からなる
有機充填材を5〜25重量%含有していることを特徴と
するフェノール樹脂成形材料。1. A phenolic resin molding material comprising a phenolic resin and inorganic fibers, wherein the organic filler comprising a cured melamine resin is contained in an amount of 5 to 25% by weight based on the total amount of the phenolic resin molding material. A phenolic resin molding material.
材が、メラミン樹脂成形材料の成形工程で生じたロス材
を粉砕した粉体である請求項1記載のフェノール樹脂成
形材料。2. The phenolic resin molding material according to claim 1, wherein the organic filler composed of a cured product of the melamine resin is a powder obtained by crushing a loss material generated in a molding step of the melamine resin molding material.
材の粒径が100μm以下である請求項1記載のフェノ
ール樹脂成形材料。3. The phenolic resin molding material according to claim 1, wherein the organic filler composed of a cured melamine resin has a particle size of 100 μm or less.
フェノール樹脂成形材料を加熱プレスにより成形加工し
て得られるプーリー成形品。4. A pulley molding obtained by molding the phenolic resin molding material according to claim 1 by a hot press.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP33127399A JP2001151983A (en) | 1999-11-22 | 1999-11-22 | Phenolic resin molding material and molded pulley prepared therefrom |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP33127399A JP2001151983A (en) | 1999-11-22 | 1999-11-22 | Phenolic resin molding material and molded pulley prepared therefrom |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2001151983A true JP2001151983A (en) | 2001-06-05 |
Family
ID=18241856
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP33127399A Pending JP2001151983A (en) | 1999-11-22 | 1999-11-22 | Phenolic resin molding material and molded pulley prepared therefrom |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2001151983A (en) |
-
1999
- 1999-11-22 JP JP33127399A patent/JP2001151983A/en active Pending
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