JPH073074A - Injection molding resin composition and resin molding - Google Patents
Injection molding resin composition and resin moldingInfo
- Publication number
- JPH073074A JPH073074A JP5172297A JP17229793A JPH073074A JP H073074 A JPH073074 A JP H073074A JP 5172297 A JP5172297 A JP 5172297A JP 17229793 A JP17229793 A JP 17229793A JP H073074 A JPH073074 A JP H073074A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- lubricating oil
- spherical silica
- silica gel
- injection molding
- 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.)
- Granted
Links
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、射出成形用樹脂組成物
および樹脂成形体に関するものである。TECHNICAL FIELD The present invention relates to a resin composition for injection molding and a resin molding.
【０００２】[0002]
【従来の技術】樹脂の摺動特性を向上させる方法、すな
わち摩擦係数並びに摩擦摩耗量を低減させる方法とし
て、樹脂中に潤滑油を混入することは知られている。し
かし、溶解ないし溶融した樹脂は一般に粘度が比較的高
く、潤滑油を樹脂中に均一に分散させることはかなり困
難である。2. Description of the Related Art As a method of improving the sliding characteristics of a resin, that is, a method of reducing a friction coefficient and a friction wear amount, it is known to mix a lubricating oil into a resin. However, the dissolved or melted resin generally has a relatively high viscosity, and it is quite difficult to uniformly disperse the lubricating oil in the resin.
【０００３】潤滑油は粘度が低いため、樹脂の粘度を極
端に小さくすると、潤滑油と樹脂とを混合したとき比重
や表面張力の差によって潤滑油は極在してしまい均一に
樹脂中に分散できない。また樹脂の粘度が高すぎても、
潤滑油の均一な分散を阻害する。このため従来において
は、潤滑油をタルクや金属粉末に塗布し、これを樹脂と
混合することにより樹脂中に均一に分散させる方法が採
られていた。Since lubricating oil has a low viscosity, if the viscosity of the resin is made extremely small, the lubricating oil will be extremely dispersed due to the difference in specific gravity and surface tension when the lubricating oil and the resin are mixed, and the resin will be uniformly dispersed in the resin. Can not. If the resin viscosity is too high,
Prevents uniform dispersion of lubricating oil. For this reason, conventionally, a method has been adopted in which lubricating oil is applied to talc or metal powder, and this is mixed with a resin so as to be uniformly dispersed in the resin.
【０００４】しかしこのような方法では、潤滑油を多量
に樹脂中に均一分散させかつ潤滑油を長期間にわたって
安定的に樹脂表面に滲み出させることは困難であった。
このため、潤滑油切れにより長期間の使用ができなかっ
た。また、このような樹脂を射出成形する際には、潤滑
油が成形品表面に多量に析出し成形性を阻害するという
課題もあった。However, with such a method, it was difficult to uniformly disperse a large amount of the lubricating oil in the resin and stably exude the lubricating oil onto the resin surface for a long period of time.
For this reason, it could not be used for a long time due to running out of lubricating oil. Further, when such a resin is injection-molded, there is a problem that a large amount of lubricating oil is deposited on the surface of the molded product and hinders the moldability.
【０００５】[0005]
【発明が解決しようとする課題】本発明はかかる欠点を
排除し、潤滑油を熱可塑性樹脂中に均一に分散させ、か
つ射出成形の際にも潤滑油が成形品表面に析出しにくい
樹脂組成物を得ることを目的とする。DISCLOSURE OF THE INVENTION The present invention eliminates such drawbacks, a lubricating oil is uniformly dispersed in a thermoplastic resin, and a lubricating oil is less likely to deposit on the surface of a molded product even during injection molding. The purpose is to get things.
【０００６】[0006]
【課題を解決するための手段】本発明は、潤滑油を含浸
した平均粒子直径１〜２０μｍの球状シリカゲルおよび
熱可塑性樹脂からなる組成物であって、球状シリカゲル
と潤滑油の合計量に対して潤滑油が１〜９０重量％、熱
可塑性樹脂および上記潤滑油を含浸した球状シリカゲル
の合計量に対して上記潤滑油を含浸した球状シリカゲル
が０．０１〜８０重量％である射出成形用樹脂組成物を
提供するものである。The present invention relates to a composition comprising spherical silica gel having an average particle diameter of 1 to 20 μm impregnated with a lubricating oil and a thermoplastic resin, the composition being based on the total amount of the spherical silica gel and the lubricating oil. Resin composition for injection molding, wherein the lubricating oil is 1 to 90% by weight, and the spherical silica gel impregnated with the lubricating oil is 0.01 to 80% by weight based on the total amount of the thermoplastic resin and the spherical silica gel impregnated with the lubricating oil. It is to provide things.
【０００７】熱可塑性樹脂としては、特に限定されるこ
となく種々のものを使用することができる。例えば、ポ
リエチレン樹脂、ポリプロピレン樹脂、ポリスチレン樹
脂、ＡＢＳ樹脂、ＡＳ樹脂、アクリル系樹脂、塩化ビニ
ル樹脂、各種ポリアミド樹脂、ポリオキシメチレン樹
脂、ポリカーボネート樹脂、変性ポリフェニレンエーテ
ル樹脂、ポリエチレンテレフタレート樹脂、ポリブチレ
ンテレフタレート樹脂、ポリエーテルニトリル樹脂、ポ
リビニルアセテート樹脂、ポリ塩化ビニリデン樹脂、ポ
リサルホン樹脂、ポリエーテルサルホン樹脂、ポリフェ
ニレンサルファイド樹脂、ポリアリレート樹脂、ポリア
ミドイミド樹脂、ポリエーテルイミド樹脂、ポリイミド
樹脂、ポリエーテルエーテルケトン樹脂、各種液晶樹
脂、テトラフルオロエチレン／パーフルオロアルキルビ
ニルエーテル共重合体樹脂、ポリクロロトリフルオロエ
チレン樹脂、ポリフッ化ビニリデン樹脂、ポリフッ化ビ
ニル樹脂、エチレン／テトラフルオロエチレン共重合体
樹脂、エチレン／クロロトリフルオロエチレン共重合体
樹脂およびこれらの共重合体が使用できる。The thermoplastic resin is not particularly limited, and various kinds can be used. For example, polyethylene resin, polypropylene resin, polystyrene resin, ABS resin, AS resin, acrylic resin, vinyl chloride resin, various polyamide resins, polyoxymethylene resins, polycarbonate resins, modified polyphenylene ether resins, polyethylene terephthalate resins, polybutylene terephthalate resins. , Polyether nitrile resin, polyvinyl acetate resin, polyvinylidene chloride resin, polysulfone resin, polyether sulfone resin, polyphenylene sulfide resin, polyarylate resin, polyamide imide resin, polyether imide resin, polyimide resin, polyether ether ketone resin, Various liquid crystal resins, tetrafluoroethylene / perfluoroalkyl vinyl ether copolymer resins, polychlorotrifluoroethylene resins Polyvinylidene fluoride resins, polyvinyl fluoride resins, ethylene / tetrafluoroethylene copolymer resin, an ethylene / chlorotrifluoroethylene copolymer resins and copolymers can be used.
【０００８】そしてこれらの熱可塑性樹脂のうち、特に
ＡＢＳ樹脂、ポリアミド樹脂、ポリカーボネート樹脂、
変性ポリフェニレンエーテル樹脂、ポリエチレンテレフ
タレート樹脂、ポリブチレンテレフタレート樹脂、ポリ
エーテルニトリル樹脂、ポリフェニレンサルファイド樹
脂、ポリエーテルイミド樹脂、ポリイミド樹脂、ポリエ
ーテルエーテルケトン樹脂は射出成形に適しているので
好ましい。Among these thermoplastic resins, particularly ABS resin, polyamide resin, polycarbonate resin,
Modified polyphenylene ether resin, polyethylene terephthalate resin, polybutylene terephthalate resin, polyether nitrile resin, polyphenylene sulfide resin, polyetherimide resin, polyimide resin, and polyether ether ketone resin are preferable because they are suitable for injection molding.
【０００９】潤滑油としては、シリコーンオイル、エス
テルオイルを使用することが好ましい。シリコーンオイ
ルとしては、例えばジメチル系シリコンオイル、メチル
フェニル系シリコーンオイル、フルオロシリコーンオイ
ル、アミン変性シリコーンオイル、アルキルアリル変性
シリコーンオイルが使用できる。エステルオイルとして
は、例えばネオペンチルポリオール脂肪酸エステル（ヒ
ンダードエステル）、コンプレックスエステルが使用で
きる。As the lubricating oil, it is preferable to use silicone oil or ester oil. As the silicone oil, for example, dimethyl-based silicone oil, methylphenyl-based silicone oil, fluorosilicone oil, amine-modified silicone oil, and alkylallyl-modified silicone oil can be used. As the ester oil, for example, neopentyl polyol fatty acid ester (hindered ester) and complex ester can be used.
【００１０】本発明の射出成形用樹脂組成物において、
潤滑油は球状シリカゲルに含浸された状態にある。球状
シリカゲルは、平均粒子直径が１〜２０μｍの範囲にあ
ることが必要である。平均粒子直径が１μｍに満たない
場合は、凝集しやすく熱可塑性樹脂に均一に分散するこ
とが困難であるので不適当である。平均粒子直径が２０
μｍを超える場合は、射出成形が困難になるので不適当
である。球状シリカゲル粒子において、短径に対する長
径の比が１．１以下の粒子が９０重量％含まれるものが
好ましい。In the resin composition for injection molding of the present invention,
The lubricating oil is impregnated into spherical silica gel. The spherical silica gel needs to have an average particle diameter in the range of 1 to 20 μm. If the average particle diameter is less than 1 μm, it is not suitable because it easily aggregates and it is difficult to uniformly disperse it in the thermoplastic resin. Average particle diameter is 20
If it exceeds μm, injection molding becomes difficult, which is not suitable. The spherical silica gel particles preferably include 90% by weight of particles having a ratio of major axis to minor axis of 1.1 or less.
【００１１】球状シリカゲルは、特に次のような物性を
有するものが好ましい。 平均粒子径 ３〜１２μｍ 非晶質二酸化ケイ素純度 ９９．９重量％以上 細孔容積 ０．９ｍｌ／ｇ以上 平均細孔半径 ３０Å以上 比表面積 ３００ｍ2 ／ｇ以上 吸油量 １５０ｍｌ／１００ｇ以上The spherical silica gel preferably has the following physical properties. Average particle size 3-12 μm Amorphous silicon dioxide purity 99.9% by weight or more Pore volume 0.9 ml / g or more Average pore radius 30 Å or more Specific surface area 300 m 2 / g or more Oil absorption 150 ml / 100 g or more
【００１２】球状シリカにおける潤滑油の含浸量は、潤
滑油と球状シリカゲルの合計量に対し１〜９０重量％で
ある。より好ましい含浸量は、１０〜８０重量％であ
る。潤滑油は、そのままの原液または溶剤に溶解させた
溶液として、球状シリカゲルに含浸させる。溶液の場合
の潤滑油の濃度は、１〜９０重量％程度が好ましい。具
体的には、潤滑油の原液または溶液に、球状シリカゲル
を浸漬して潤滑油を浸透させ保持させる。この浸漬工程
は、一度のみならず、数度にわたって行うこともでき
る。The impregnated amount of the lubricating oil in the spherical silica is 1 to 90% by weight based on the total amount of the lubricating oil and the spherical silica gel. A more preferable impregnation amount is 10 to 80% by weight. The lubricating oil is impregnated into the spherical silica gel as a stock solution as it is or as a solution dissolved in a solvent. The concentration of the lubricating oil in the case of a solution is preferably about 1 to 90% by weight. Specifically, spherical silica gel is dipped in a stock solution or solution of lubricating oil to allow the lubricating oil to permeate and hold it. This dipping step can be performed not only once but also several times.
【００１３】熱可塑性樹脂と潤滑油を含浸した球状シリ
カゲルの混合割合は、熱可塑性樹脂および潤滑油を含浸
した球状シリカゲルの合計量に対して上記潤滑油を含浸
した球状シリカゲルが０．０１〜８０重量％である。潤
滑油を含浸した球状シリカゲルの混合割合が０．０１重
量％に満たない場合には、潤滑油添加の効果が発現せ
ず、摺動特性が向上しないので不適当である。逆に、潤
滑油を含浸した球状シリカゲルの混合割合が８０重量％
を超える場合には、樹脂の容積に対して球状シリカゲル
の容積が大幅に上回り、実際の混練が困難となるので不
適当である。潤滑油を含浸した球状シリカゲルの混合割
合のさらに望ましい混合割合は、１〜７０重量％であ
る。The mixing ratio of the spherical silica gel impregnated with the thermoplastic resin and the lubricating oil is 0.01 to 80 for the spherical silica gel impregnated with the lubricating oil with respect to the total amount of the spherical silica gel impregnated with the thermoplastic resin and the lubricating oil. % By weight. When the mixing ratio of the spherical silica gel impregnated with the lubricating oil is less than 0.01% by weight, the effect of adding the lubricating oil is not exhibited and the sliding characteristics are not improved, which is not suitable. On the contrary, the mixing ratio of spherical silica gel impregnated with lubricating oil is 80% by weight.
If it exceeds, the volume of the spherical silica gel greatly exceeds the volume of the resin, and actual kneading becomes difficult, which is not suitable. A more desirable mixing ratio of the spherical silica gel impregnated with the lubricating oil is 1 to 70% by weight.
【００１４】本発明の射出成形用樹脂組成物は、熱可塑
性樹脂に潤滑油を含浸した球状シリカを配合したもので
あるが、さらに、例えば繊維状強化材、潤滑油を含浸し
た球状シリカ以外の充填材を単独もしくはそれらを併用
して配合し組成物を形成することが可能である。この場
合、熱可塑性樹脂および潤滑油を含浸した球状シリカの
混合物１００重量部に対し、潤滑油を含浸した球状シリ
カゲル以外の充填材および補強用繊維から選ばれる１種
以上を合計１〜３００重量部配合するのが好ましい。The resin composition for injection molding of the present invention comprises a thermoplastic resin mixed with spherical silica impregnated with a lubricating oil. Further, for example, a fibrous reinforcing material, a spherical silica impregnated with a lubricating oil other than It is possible to form the composition by mixing the fillers alone or in combination of them. In this case, a total of 1 to 300 parts by weight of one or more kinds selected from fillers and reinforcing fibers other than spherical silica gel impregnated with lubricating oil is added to 100 parts by weight of a mixture of spherical silica impregnated with a thermoplastic resin and lubricating oil. It is preferable to mix them.
【００１５】繊維状強化材としては、ガラス、カーボ
ン、チタン酸カリウム、アスベスト、炭化ケイ素、窒化
ケイ素、またはメタケイ酸カルシウム等の無機繊維、ア
ラミド繊維等の有機繊維等を使用できる。As the fibrous reinforcing material, inorganic fibers such as glass, carbon, potassium titanate, asbestos, silicon carbide, silicon nitride or calcium metasilicate, organic fibers such as aramid fibers and the like can be used.
【００１６】潤滑油を含浸した球状シリカ以外の充填材
としては、酸化チタン、三酸化アンチモン、クレー、ベ
ントナイト、セリサイト、ゼオライト、石膏、タルク、
マイカ、カオリン、カーボンブラック、二硫化モリブデ
ン、石英粉、ガラスビーズ、ガラスバルーン、ガラスフ
レーク等が使用できる。あるいは亜鉛、アルミニウム、
銅、マグネシウム、カルシウム、鉄等の金属粉末やそれ
らの酸化物、炭酸化物あるいは水酸化物の粉末等を使用
することもできる。Fillers other than spherical silica impregnated with lubricating oil include titanium oxide, antimony trioxide, clay, bentonite, sericite, zeolite, gypsum, talc,
Mica, kaolin, carbon black, molybdenum disulfide, quartz powder, glass beads, glass balloons, glass flakes and the like can be used. Or zinc, aluminum,
It is also possible to use metal powders of copper, magnesium, calcium, iron or the like, or powders of oxides, carbonates or hydroxides thereof.
【００１７】さらに、臭素系等の難燃剤、熱安定剤、紫
外線吸収剤等の添加材、あるいは、分散剤や着色剤等を
配合することも可能である。Further, it is possible to add a flame retardant such as bromine, a heat stabilizer, an additive such as an ultraviolet absorber, or a dispersant or a coloring agent.
【００１８】本発明の射出成形用樹脂組成物は、混練の
後、射出成形を施すことにより樹脂成形品を得ることが
できる。射出成形用樹脂組成物は、適宜ペレット化して
おくこともできる。The resin composition for injection molding of the present invention can be kneaded and then injection molded to obtain a resin molded article. The resin composition for injection molding may be pelletized as appropriate.
【００１９】[0019]
実施例１ 球状シリカゲル（平均粒子直径３μｍ、細孔容積１．８
ｍｌ／ｇ、平均細孔半径５６０Å、比表面積８００ｍ2
／ｇ）１ｋｇを１００℃で２時間乾燥した後、ジメチル
シリコーンオイル（粘度１００ｃｐ）３０００ｍｌ中に
浸漬し、３００ｍｌ／１００ｇの割合で含浸させた。Example 1 Spherical silica gel (average particle diameter 3 μm, pore volume 1.8)
ml / g, average pore radius 560Å, specific surface area 800 m 2
1 g / g) was dried at 100 ° C. for 2 hours, then immersed in 3000 ml of dimethyl silicone oil (viscosity 100 cp) and impregnated at a rate of 300 ml / 100 g.
【００２０】この潤滑油を含浸させた球状シリカゲル５
００ｇ、ガラス繊維（直径１３μｍ、長さ３ｍｍ）４０
００ｇ、ポリフェニレンサルファイド樹脂５５００ｇの
混合物を、３２０℃に保持された同方向回転二軸混練押
出機で混練押出し、空冷後ペレタイザーで直径３ｍｍ、
長さ３ｍｍの円柱状に切ってペレット状の成形材料を得
た。このペレットを１４０℃で４時間乾燥後、３２０℃
に保持された射出成形機に投入し、保圧１０００ｋｇ／
ｃｍ2 で幅１２．５ｍｍ、長さ２００ｍｍ、厚さ３ｍｍ
の物性測定用の試験片並びに内径１９．９ｍｍ、外径２
５．６ｍｍ、高さ１４．５ｍｍの摺動特性測定用の環状
試験片を射出成形した。成形品を観察したところ、表面
は極めて平滑であり潤滑油の表面への多量の析出もなく
良好な状態であった。Spherical silica gel 5 impregnated with this lubricating oil
00g, glass fiber (diameter 13μm, length 3mm) 40
A mixture of 00 g and 5500 g of polyphenylene sulfide resin was kneaded and extruded by a co-rotating twin-screw kneading extruder held at 320 ° C., and after air cooling, a diameter of 3 mm was obtained by a pelletizer.
A pellet-shaped molding material was obtained by cutting into a cylindrical shape having a length of 3 mm. After drying these pellets at 140 ℃ for 4 hours, 320 ℃
Was put into the injection molding machine held at
cm 2 width 12.5 mm, length 200 mm, thickness 3 mm
Test piece for measuring physical properties, inner diameter 19.9 mm, outer diameter 2
An annular test piece of 5.6 mm in height and 14.5 mm in height for measuring sliding characteristics was injection-molded. Observation of the molded product revealed that the surface was extremely smooth and was in a good state without a large amount of precipitation of the lubricating oil on the surface.
【００２１】これらの試験片で測定した物性は、以下の
通りである。 引張強度 １５００ｋｇ／ｃｍ2 曲げ強度 ２１００ｋｇ／ｃｍ2 曲げ弾性率 １４００００ｋｇ／ｃｍ2 表面粗さ（Ｒz ） ５μｍThe physical properties measured by these test pieces are as follows. Tensile strength 1500 kg / cm 2 Bending strength 2100 kg / cm 2 Bending elastic modulus 140000 kg / cm 2 Surface roughness (R z ) 5 μm
【００２２】また荷重３ｋｇ／ｃｍ2 、周速５０ｃｍ／
ｓ、相手材Ｓ４５Ｃで２４時間並びに１００時間で行っ
た摺動試験の結果は、以下の通りである。 （２４時間後） 摩擦係数 ０．２ 摩擦摩耗量 ０．００９ｍｍ3 ／ｋｇ・ｋｍ （１００時間後） 摩擦係数 ０．２１ 摩擦摩耗量 ０．０１１ｍｍ3 ／ｋｇ・ｋｍA load of 3 kg / cm 2 and a peripheral speed of 50 cm /
The results of the sliding test conducted for 24 hours and 100 hours with the mating material S45C are as follows. (After 24 hours) Friction coefficient 0.2 Friction and wear amount 0.009 mm 3 / kg ・ km (After 100 hours) Friction coefficient 0.21 Friction and wear amount 0.011 mm 3 / kg ・ km
【００２３】実施例２ 球状シリカゲル（平均粒子直径５μｍ、細孔容積１．８
ｍｌ／ｇ、平均細孔半径５６０Å、比表面積８００ｍ2
／ｇ）１ｋｇを１００℃で２時間乾燥した後、ジメチル
シリコーンオイル（粘度１０００ｃｐ）３０００ｍｌに
浸漬し潤滑油を３００ｍｌ／１００ｇの割合で含浸させ
た。Example 2 Spherical silica gel (average particle diameter 5 μm, pore volume 1.8)
ml / g, average pore radius 560Å, specific surface area 800 m 2
1 g / g) was dried at 100 ° C. for 2 hours and then immersed in 3000 ml of dimethyl silicone oil (viscosity 1000 cp) to impregnate the lubricating oil at a rate of 300 ml / 100 g.
【００２４】この潤滑油を含浸させた球状シリカゲル４
５０ｇとピッチ系カーボン繊維（直径６μｍ、長さ６ｍ
ｍ）２０００ｇ、マイカ４５５０ｇおよびポリフェニレ
ンサルファイド樹脂３０００ｇとを３２０℃に保持され
た同方向回転二軸混練押出機で混練押出し、空冷後ペレ
タイザーで直径３ｍｍ、長さ３ｍｍの円柱状に切ってペ
レット状の成形材料を得た。このペレットを１４０℃で
４時間乾燥後３２０℃に保持された射出成形機に投入
し、保圧１０００ｋｇ／ｃｍ2 で幅１２．５ｍｍ、長さ
２００ｍｍ、厚さ３ｍｍの物性測定用の試験片並びに内
径１９．９ｍｍ、外径２５．６ｍｍ、高さ１４．５ｍｍ
の摺動特性測定用の環状試験片を射出成形した。成形品
を観察したところ、表面は極めて平滑であり潤滑油の表
面への多量の析出もなく良好な状態であった。Spherical silica gel 4 impregnated with this lubricating oil
50g and pitch-based carbon fiber (diameter 6μm, length 6m
m) 2000 g, mica 4550 g, and polyphenylene sulfide resin 3000 g were kneaded and extruded by a co-rotating twin-screw kneading extruder held at 320 ° C., and after air cooling, pelletized by cutting into a columnar shape having a diameter of 3 mm and a length of 3 mm. A molding material was obtained. The pellets were dried at 140 ° C. for 4 hours and then put into an injection molding machine kept at 320 ° C., a test piece for measuring physical properties having a width of 12.5 mm, a length of 200 mm and a thickness of 3 mm at a holding pressure of 1000 kg / cm 2 and Inner diameter 19.9 mm, outer diameter 25.6 mm, height 14.5 mm
An annular test piece for measuring the sliding characteristics of was injection molded. Observation of the molded product revealed that the surface was extremely smooth and was in a good state without a large amount of precipitation of the lubricating oil on the surface.
【００２５】これらの試験片で測定した物性は、以下の
通りである。 引張強度 ７００ｋｇ／ｃｍ2 曲げ強度 １２００ｋｇ／ｃｍ2 曲げ弾性率 ２７５０００ｋｇ／ｃｍ2 表面粗さ（Ｒz ） １０μｍThe physical properties measured by these test pieces are as follows. Tensile strength 700 kg / cm 2 Bending strength 1200 kg / cm 2 Bending elastic modulus 275000 kg / cm 2 Surface roughness (R z ) 10 μm
【００２６】また荷重３ｋｇ／ｃｍ2 、周速５０ｃｍ／
ｓ、相手材Ｓ４５Ｃで２４時間並びに１００時間で行っ
た摺動試験の結果は、以下の通りである。 （２４時間後） 摩擦係数 ０．１８ 摩擦摩耗量 ０．００８ｍｍ3 ／ｋｇ・ｋｍ （１００時間後） 摩擦係数 ０．１９ 摩擦摩耗量 ０．００９ｍｍ3 ／ｋｇ・ｋｍA load of 3 kg / cm 2 and a peripheral speed of 50 cm /
The results of the sliding test conducted for 24 hours and 100 hours with the mating material S45C are as follows. (After 24 hours) Friction coefficient 0.18 Friction and wear amount 0.008 mm 3 / kg · km (After 100 hours) Friction coefficient 0.19 Friction and wear amount 0.009 mm 3 / kg · km
【００２７】比較例 マイカ９０００ｇとタルク３００ｇをブレンダーに仕込
み溶剤で１０重量％に希釈したジメチルシリコーンオイ
ル（粘度１０００ｃｐ）６０００ｇを加え５分間混合し
たのち８０℃で１２時間乾燥した。Comparative Example 9000 g of mica and 300 g of talc were placed in a blender, 6000 g of dimethyl silicone oil (viscosity 1000 cp) diluted to 10% by weight with a solvent was added, and the mixture was mixed for 5 minutes and dried at 80 ° C. for 12 hours.
【００２８】かかる混合物５０００ｇとピッチ系カーボ
ン繊維（直径６μｍ、長さ６ｍｍ）２０００ｇおよびポ
リフェニレンサルファイド樹脂３０００ｇとを３２０℃
に保持された同方向回転二軸混練押出機で混練押出し、
空冷後ペレタイザーで直径３ｍｍ、長さ３ｍｍの円柱状
に切ってペレット状の成形材料を得た。このペレットを
１４０℃で４時間乾燥後３２０℃に保持された射出成形
機に投入し、保圧１０００ｋｇ／ｃｍ2 で幅１２．５ｍ
ｍ、長さ２００ｍｍ、厚さ３ｍｍの物性測定用の試験片
並びに内径１９．９ｍｍ、外径２５．６ｍｍ、高さ１
４．５ｍｍの摺動特性測定用の環状試験片を射出成形し
た。成形品を観察したところ、表面の平滑性は無く潤滑
油の表面への多量の析出が確認された。5000 g of such a mixture, 2000 g of pitch-based carbon fiber (diameter 6 μm, length 6 mm) and 3000 g of polyphenylene sulfide resin were heated at 320 ° C.
Kneading and extruding with a co-rotating twin-screw kneading extruder held in
After air cooling, it was cut into a cylindrical shape having a diameter of 3 mm and a length of 3 mm with a pelletizer to obtain a pellet-shaped molding material. The pellets were dried at 140 ° C. for 4 hours and then put into an injection molding machine maintained at 320 ° C., a holding pressure of 1000 kg / cm 2 and a width of 12.5 m.
m, length 200 mm, thickness 3 mm, test piece for measuring physical properties, inner diameter 19.9 mm, outer diameter 25.6 mm, height 1
A 4.5 mm annular test piece for measuring sliding characteristics was injection molded. Observation of the molded product confirmed that there was no surface smoothness and that a large amount of the lubricating oil was deposited on the surface.
【００２９】これらの試験片で測定した物性は、以下の
通りである。 引張強度 ７１０ｋｇ／ｃｍ2 曲げ強度 １０００ｋｇ／ｃｍ2 曲げ弾性率 ２５００００ｋｇ／ｃｍ2 表面粗さ（Ｒz ） ５０μｍThe physical properties measured by these test pieces are as follows. Tensile strength 710 kg / cm 2 Bending strength 1000 kg / cm 2 Bending elastic modulus 250,000 kg / cm 2 Surface roughness (R z ) 50 μm
【００３０】また荷重３ｋｇ／ｃｍ2 、周速５０ｃｍ／
ｓ、相手材Ｓ４５Ｃで２４時間並びに１００時間で行っ
た摺動試験の結果は、以下の通りである。 （２４時間後） 摩擦係数 ０．２１ 摩擦摩耗量 ０．０１１ｍｍ3 ／ｋｇ・ｋｍ （１００時間後） 摩擦係数 ０．４５（５０時間経過後摩擦係数上昇） 摩擦摩耗量 ０．０８９ｍｍ3 ／ｋｇ・ｋｍA load of 3 kg / cm 2 and a peripheral speed of 50 cm /
The results of the sliding test conducted for 24 hours and 100 hours with the mating material S45C are as follows. (After 24 hours) Friction coefficient 0.21 Friction and wear amount 0.011 mm 3 / kg ・ km (After 100 hours) Friction coefficient 0.45 (Friction coefficient increase after 50 hours) Friction and wear amount 0.089 mm 3 / kg ・km
【００３１】[0031]
【発明の効果】本発明の射出成形用樹脂組成物は、熱可
塑性樹脂に潤滑油を混ぜ込む際に、容易に潤滑油を均一
に樹脂中に分散させることが可能である。このため、射
出成形によって成形品を得たとき、その表面に潤滑油が
多量に析出し成形品の表面の平滑性が阻害されず、成形
性にも優れる。この組成物から得られる樹脂成形体は、
摩擦係数並びに摩擦摩耗量が小さく、かつその性状が長
期間安定的に維持される。この樹脂成形体は、機械部
品、例えば、軸受け等に好適に用いることができる。INDUSTRIAL APPLICABILITY The resin composition for injection molding of the present invention can easily and uniformly disperse the lubricating oil in the resin when the lubricating oil is mixed with the thermoplastic resin. Therefore, when a molded product is obtained by injection molding, a large amount of lubricating oil is deposited on the surface of the molded product, the smoothness of the surface of the molded product is not impaired, and the moldability is excellent. The resin molding obtained from this composition,
The coefficient of friction and the amount of friction and wear are small, and their properties are stably maintained for a long period of time. This resin molded body can be suitably used for machine parts such as bearings.
Claims (3)
ｍの球状シリカゲルおよび熱可塑性樹脂からなる組成物
であって、球状シリカゲルと潤滑油の合計量に対して潤
滑油が１〜９０重量％、熱可塑性樹脂および上記潤滑油
を含浸した球状シリカゲルの合計量に対して上記潤滑油
を含浸した球状シリカゲルが０．０１〜８０重量％であ
る射出成形用樹脂組成物。1. An average particle diameter of 1 to 20 .mu.
m spherical silica gel and a thermoplastic resin, wherein the total amount of the spherical silica gel and the lubricating oil is 1 to 90% by weight of the lubricating oil, and the total of the spherical silica gel impregnated with the thermoplastic resin and the lubricating oil. A resin composition for injection molding, wherein the spherical silica gel impregnated with the lubricating oil is 0.01 to 80% by weight based on the amount.
量部に対し、潤滑油を含浸した球状シリカゲル以外の充
填材および補強用繊維から選ばれる１種以上を合計１〜
３００重量部配合した射出成形用樹脂組成物。2. A total of 1 to more than one kind selected from fillers and reinforcing fibers other than spherical silica gel impregnated with lubricating oil, per 100 parts by weight of the resin composition for injection molding according to claim 1.
An injection molding resin composition containing 300 parts by weight.
組成物を、射出成形してなる樹脂成形体。3. A resin molded body obtained by injection molding the resin composition for injection molding according to claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17229793A JP3356332B2 (en) | 1993-06-18 | 1993-06-18 | Injection molding resin composition and resin molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17229793A JP3356332B2 (en) | 1993-06-18 | 1993-06-18 | Injection molding resin composition and resin molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH073074A true JPH073074A (en) | 1995-01-06 |
| JP3356332B2 JP3356332B2 (en) | 2002-12-16 |
Family
ID=15939320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17229793A Expired - Fee Related JP3356332B2 (en) | 1993-06-18 | 1993-06-18 | Injection molding resin composition and resin molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3356332B2 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10338781A (en) * | 1997-06-11 | 1998-12-22 | Daicel Chem Ind Ltd | Styrene-based resin composition and formed material thereof |
| JP2007298092A (en) * | 2006-04-28 | 2007-11-15 | Ntn Corp | Driving wheel bearing device |
| JP2008521969A (en) * | 2004-11-24 | 2008-06-26 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | Thermoplastic resin composition containing mesoporous powder absorbed with lubricating oil |
| JP2008163203A (en) * | 2006-12-28 | 2008-07-17 | Ntn Corp | Electrically conductive sliding material composition |
| JP2009036380A (en) * | 2008-10-27 | 2009-02-19 | Ntn Corp | Oil-containing sliding material and sliding bearing |
| JP2010032059A (en) * | 2001-12-12 | 2010-02-12 | Ntn Corp | High precision sliding bearing |
| JP2013196002A (en) * | 2012-03-22 | 2013-09-30 | Xerox Corp | Delivery apparatus |
| WO2016093309A1 (en) * | 2014-12-12 | 2016-06-16 | Dic株式会社 | Polyarylene sulfide resin composition, molded article, composite molded article, and method for producing composite molded article |
| JP2019099604A (en) * | 2017-11-29 | 2019-06-24 | ミネベアミツミ株式会社 | Resin composition, slide member and production method of slide member |
-
1993
- 1993-06-18 JP JP17229793A patent/JP3356332B2/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10338781A (en) * | 1997-06-11 | 1998-12-22 | Daicel Chem Ind Ltd | Styrene-based resin composition and formed material thereof |
| JP2010032059A (en) * | 2001-12-12 | 2010-02-12 | Ntn Corp | High precision sliding bearing |
| JP2008521969A (en) * | 2004-11-24 | 2008-06-26 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | Thermoplastic resin composition containing mesoporous powder absorbed with lubricating oil |
| JP2007298092A (en) * | 2006-04-28 | 2007-11-15 | Ntn Corp | Driving wheel bearing device |
| JP2008163203A (en) * | 2006-12-28 | 2008-07-17 | Ntn Corp | Electrically conductive sliding material composition |
| JP2009036380A (en) * | 2008-10-27 | 2009-02-19 | Ntn Corp | Oil-containing sliding material and sliding bearing |
| JP2013196002A (en) * | 2012-03-22 | 2013-09-30 | Xerox Corp | Delivery apparatus |
| WO2016093309A1 (en) * | 2014-12-12 | 2016-06-16 | Dic株式会社 | Polyarylene sulfide resin composition, molded article, composite molded article, and method for producing composite molded article |
| JPWO2016093309A1 (en) * | 2014-12-12 | 2017-10-12 | Dic株式会社 | Polyarylene sulfide resin composition, molded product, composite molded product, and method for producing composite molded product |
| JP2020037708A (en) * | 2014-12-12 | 2020-03-12 | Dic株式会社 | Polyarylene sulfide resin composition, molding, composite molding and method for producing composite molding |
| JP2019099604A (en) * | 2017-11-29 | 2019-06-24 | ミネベアミツミ株式会社 | Resin composition, slide member and production method of slide member |
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| Publication number | Publication date |
|---|---|
| JP3356332B2 (en) | 2002-12-16 |
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