JPS60252645A - Ultra-high molecular weight polyethylene composition - Google Patents
Ultra-high molecular weight polyethylene compositionInfo
- Publication number
- JPS60252645A JPS60252645A JP11009484A JP11009484A JPS60252645A JP S60252645 A JPS60252645 A JP S60252645A JP 11009484 A JP11009484 A JP 11009484A JP 11009484 A JP11009484 A JP 11009484A JP S60252645 A JPS60252645 A JP S60252645A
- Authority
- JP
- Japan
- Prior art keywords
- molecular weight
- ultra
- high molecular
- weight polyethylene
- average molecular
- 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
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は超高分子量ポリエチレンのもつ耐摩耗性などを
維持しつつ流れ性を付与し成形を容易にした超高分子量
ポリエチレン組成物に関す、る。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an ultra-high molecular weight polyethylene composition that maintains the wear resistance of ultra-high molecular weight polyethylene while imparting flowability and facilitating molding. .
超高分子量ポリエチレンはその平均分子量が高分子量ポ
リエチレンは高硬度を有し、耐摩耗性に優れている。し
かし、分子間凝集力が９ｉＩりために流れ性が悪く、成
形が非常に困難なので、一般にｄ、加圧高温下で成型が
行なわれているが特殊な形状のｓｋｉを必要とする場合
にＵ％切削による加工が行なわれているため製品が安価
に供給されない。叉上記の加圧プレス決に加えて、クム
押出や１軸、２軸の特殊装置による押出成形も誠みられ
ているが生産性が悪くコスト的にはプレス切削方式と同
程度となシ実用性に乏しい。特ｒＭ昭５１−９０３６０
！公報にけ混練・成形過程におけるスクリューが開示さ
れている。しかし、この開示技術によっても、樹脂の流
れ性が木質的に改善されることはなく、成形機での溶！
ｍｓｌ脂の流動性が依然として悪−ために少量ずつゆっ
くりとしか成形することができず生産性が悪くコスト高
と彦る。そのうえ、この樹脂の成形には、上記の加圧プ
レス法や押出法と同様に２４０〜２５０℃の高温が必要
であるため樹脂の熱分解が起こり分子量が低下するので
耐摩耗性が低下する。さら忙＃開ｗＢ５８−５９２４３
号公報には脂肪族環式炭化水素重合体を３０％＃Ｉ後添
加して成形を容易にした例が開示されている。添加物に
より樹脂が希釈されて流れ性がやや改善されるもののな
お充分ではないため、この方式による成形は押出成形機
など特定の成形装置にしか適用されえないし、超高分子
量ポリエチレン自体の濃度が薄くなるため、耐薬品性、
耐摩耗性が低下する。Ultra-high molecular weight polyethylene has a high average molecular weight, and high molecular weight polyethylene has high hardness and excellent wear resistance. However, since the intermolecular cohesive force is 9iI, the flowability is poor and molding is extremely difficult, so molding is generally performed under pressure and high temperature, but when a special shape of ski is required, U Since processing is performed by % cutting, products cannot be supplied at low prices. In addition to the above-mentioned pressure press method, extrusion molding using comb extrusion and special single- or double-screw equipment is also being considered, but the productivity is poor and the cost is about the same as the press cutting method. lacking in sex. Special rM Showa 51-90360
! The publication discloses a screw used in the kneading and forming process. However, even with this disclosed technology, the flowability of the resin is not improved in terms of wood quality, and the melting in the molding machine is difficult.
Since the fluidity of msl fat is still poor, it can only be molded slowly in small quantities, resulting in poor productivity and high costs. Furthermore, molding of this resin requires a high temperature of 240 to 250° C., similar to the above-mentioned pressure pressing method or extrusion method, which causes thermal decomposition of the resin, resulting in a decrease in molecular weight and a decrease in wear resistance. Sara busy #open wB58-59243
The publication discloses an example in which 30% of an aliphatic cyclic hydrocarbon polymer was added after #I to facilitate molding. Although the resin is diluted by the additive and the flowability is slightly improved, it is still not sufficient, so molding using this method can only be applied to specific molding equipment such as extrusion molding machines, and the concentration of the ultra-high molecular weight polyethylene itself is Due to its thinness, chemical resistance,
Wear resistance decreases.
本発明の目的は、超高分子量ポリエチレンの耐摩耗性・
耐薬品性を低下させることなく流れ性を本たせて歇形易
容とした超高分子量ポリエチレン組成物を提供すること
にある。The purpose of the present invention is to improve the wear resistance and
An object of the present invention is to provide an ultra-high molecular weight polyethylene composition which has improved flowability and is easily molded without reducing chemical resistance.
本発明の要旨は、平均分子量１００万以上の超高分子量
ポリエチレン１００重量部と、スチレンオリゴマー３〜
１０重量部と、炭化水素系ワックス又は脂肪酸金属石け
んα５〜５重量部よりなる超高分子量ポリエチレン組成
物に存する。The gist of the present invention is to combine 100 parts by weight of ultra-high molecular weight polyethylene with an average molecular weight of 1 million or more, and 3 to 3 parts of styrene oligomer.
10 parts by weight, and 5 to 5 parts by weight of hydrocarbon wax or fatty acid metal soap α.
本発明で使用されるスチレンオリゴマーはスチレンの低
重合体であって、平均分子量が３００〜５０００のもの
が好適に使用され、平均分子量１００万以上の超高分子
量ポリエチレン１゜０重量部に対し３〜ｌＯ重量部添加
される。The styrene oligomer used in the present invention is a styrene low polymer with an average molecular weight of 300 to 5,000. ~lO parts by weight are added.
本発明で使用されるワックスは炭化水素系のものであっ
て、たとえば／＜ラフインワックス、マイクロワックス
、ポリエチレンワックス等があげられ、融点が１００〜
１２０℃のものが好適に使用される。The wax used in the present invention is a hydrocarbon type wax, such as rough-in wax, micro wax, polyethylene wax, etc., and has a melting point of 100 to 100.
A temperature of 120° C. is preferably used.
又脂肪族金属石けんとしては、たとえばステアリン酸、
モンタン酸などの有機カルボン酸のマクネシクム、カル
シタム、ストロンチウム、パリクム、亜鉛、カドミクム
、鉛などの金属の塩があげられる。Examples of aliphatic metal soaps include stearic acid,
Examples include salts of organic carboxylic acids such as montanic acid, calcium, strontium, paricum, and metals such as zinc, cadmicum, and lead.
上記炭化水素系ワックス又は脂肪族金属石けんは超高分
子量ボリエ牛しン１００１１ｉ量部に対し、０．５〜５
重量部添加されるのであり、好ましくｔ−ｔｉ〜３重景
部である。The above-mentioned hydrocarbon wax or aliphatic metal soap is 0.5 to 5 parts by weight based on the amount of ultra-high molecular weight Borie beef essence 10011i.
It is added in an amount of t-ti to 3 parts by weight.
本発明の超高分子量ポリエチレン組成物の構歇は上述の
通りであり、平均分子量１００万以上の超高分子量ポリ
エチレンにスチレンオリゴマーと炭化水素系ワックス又
は脂肪族金属石けんが添加されているので、超高分子量
ポリエチレンのもつ耐摩耗性などのすぐれた性質を損な
うことなく流れ性を向上させることができその結果成形
を容易に行々うことができる。このため成形品の生産性
が向上し、低価格で成形品を供給することができる。The structure of the ultra-high molecular weight polyethylene composition of the present invention is as described above, and since styrene oligomer and hydrocarbon wax or aliphatic metal soap are added to ultra-high molecular weight polyethylene with an average molecular weight of 1 million or more, The flowability can be improved without impairing the excellent properties of high molecular weight polyethylene such as abrasion resistance, and as a result, molding can be performed easily. Therefore, the productivity of molded products is improved, and molded products can be supplied at low prices.
次に本発明の詳細な説明する。 Next, the present invention will be explained in detail.
０のスチレンオリゴマー（エクソンケミカル社製、ピコ
ラスチック３００）及び炭化水素系ワックス（三片石油
化学社製、ハイワックス２２０ＭＰ）よりなり、第１表
に示した組成の配合物をスパーミキサーに供給し、常温
〜８０℃の範囲で１５分間混合して混合物を得た。得ら
れた混合物を直径４０国の２軸押出機（Ｌ／Ｄ２６゜６
）に供給し、幅１５側、厚さＬＯａ＋のシートを得た。A mixture of 0 styrene oligomer (manufactured by Exxon Chemical Co., Ltd., Picolastic 300) and a hydrocarbon wax (manufactured by Mikata Petrochemical Co., Ltd., Hiwax 220MP) and having the composition shown in Table 1 was supplied to a spar mixer. , and mixed for 15 minutes at room temperature to 80°C to obtain a mixture. The resulting mixture was transferred to a twin-screw extruder with a diameter of 40mm (L/D 26°6
) to obtain a sheet with a width of 15 and a thickness of LOa+.
押出機のスクリュー先端部を２６０℃に設定し押出し速
度（押出口の線速度）を測定した。又得られたシートの
耐摩耗性を測定し、結果を第１表に示した。耐摩耗性は
厚さＬＯｗｍｓ巾５ ａｍ 、長さ７備の試料シートに
ノズルから噴射する１００メツシユの鋳物砂を垂直に３
分間あて、シート１００ｙあたりの摩耗量を測定した０
第１表
実施例４〜６、比較例４〜７
°平均分子量６００万の超高分子量ポリエチレン、平均
分子量３００．１０００及び５０００のスチレンオリゴ
ー−（エクソンケミカル社製、ピコラスチック３００．
１０００及び５０００）及びステアリン酸カルシクムよ
りなり、第２表に示した組成の配合物を用い、実施例１
で行ったと同様にして混合物を得、押出機で押出した。The tip of the screw of the extruder was set at 260° C., and the extrusion speed (linear speed of the extrusion port) was measured. The abrasion resistance of the obtained sheet was also measured and the results are shown in Table 1. Abrasion resistance was measured by spraying 100 meshes of foundry sand vertically from a nozzle onto a sample sheet with a thickness of LOwms width of 5 am and a length of 7 mm.
Table 1 Examples 4 to 6, Comparative Examples 4 to 7 Ultra high molecular weight polyethylene with an average molecular weight of 6 million, styrene oligo with an average molecular weight of 300, 1000 and 5000. (Picolastic 300, manufactured by Exxon Chemical Company.
1000 and 5000) and calcium stearate and having the composition shown in Table 2, Example 1
A mixture was obtained and extruded in an extruder in the same manner as in .
押出し速度と摩耗量を測定しｖＪ２表に示した。The extrusion speed and amount of wear were measured and shown in table vJ2.
第２表 特許出願人 積水化学工業株式会社 代表者 藤 沼 基 利Table 2 patent applicant Sekisui Chemical Co., Ltd. Representative: Mototoshi Fujinuma
Claims (1)
１００重量部と、スチレンオリゴマ−３〜ｌＯ重量部と
、炭化水素系ワックス又は脂肪酸金属石けんａ５〜５重
量部よりなる超高分子量ポリエチレン組成物。1. An ultra-high molecular weight polyethylene composition consisting of 100 parts by weight of ultra-high molecular weight polyethylene having an average molecular weight of 1 million or more, 3 to 10 parts by weight of styrene oligomer, and 5 to 5 parts by weight of hydrocarbon wax or fatty acid metal soap A.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11009484A JPS60252645A (en) | 1984-05-30 | 1984-05-30 | Ultra-high molecular weight polyethylene composition |
| CA000464500A CA1247772A (en) | 1983-10-07 | 1984-10-02 | Ultrahigh-molecular-weight polyethylene composition |
| DE8484111981T DE3479811D1 (en) | 1983-10-07 | 1984-10-05 | Ultrahigh-molecular-weight polyethylene composition |
| EP84111981A EP0146704B1 (en) | 1983-10-07 | 1984-10-05 | Ultrahigh-molecular-weight polyethylene composition |
| US07/377,158 US4952625A (en) | 1983-10-07 | 1989-07-10 | Process for improving the flowability of ultrahigh-molecular-weight polyethylene composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11009484A JPS60252645A (en) | 1984-05-30 | 1984-05-30 | Ultra-high molecular weight polyethylene composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60252645A true JPS60252645A (en) | 1985-12-13 |
| JPH0422177B2 JPH0422177B2 (en) | 1992-04-15 |
Family
ID=14526873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11009484A Granted JPS60252645A (en) | 1983-10-07 | 1984-05-30 | Ultra-high molecular weight polyethylene composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60252645A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7214764B2 (en) | 2003-06-30 | 2007-05-08 | Depuy Products, Inc. | Free radical quench process for irradiated ultrahigh molecular weight polyethylene |
| US7335697B2 (en) | 2004-12-23 | 2008-02-26 | Depuy Products, Inc. | Polymer composition comprising cross-linked polyethylene and methods for making the same |
| US7683133B2 (en) | 2006-08-25 | 2010-03-23 | Depuy Products, Inc. | Bearing material of medical implant and methods for making it |
| US7812098B2 (en) | 2006-03-31 | 2010-10-12 | Depuy Products, Inc. | Bearing material of medical implant having reduced wear rate and method for reducing wear rate |
| US8343230B2 (en) | 2005-09-22 | 2013-01-01 | Depuy Products, Inc. | Orthopaedic bearing material |
-
1984
- 1984-05-30 JP JP11009484A patent/JPS60252645A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7214764B2 (en) | 2003-06-30 | 2007-05-08 | Depuy Products, Inc. | Free radical quench process for irradiated ultrahigh molecular weight polyethylene |
| US7335697B2 (en) | 2004-12-23 | 2008-02-26 | Depuy Products, Inc. | Polymer composition comprising cross-linked polyethylene and methods for making the same |
| US8343230B2 (en) | 2005-09-22 | 2013-01-01 | Depuy Products, Inc. | Orthopaedic bearing material |
| US7812098B2 (en) | 2006-03-31 | 2010-10-12 | Depuy Products, Inc. | Bearing material of medical implant having reduced wear rate and method for reducing wear rate |
| US7683133B2 (en) | 2006-08-25 | 2010-03-23 | Depuy Products, Inc. | Bearing material of medical implant and methods for making it |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0422177B2 (en) | 1992-04-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2953541A (en) | Composition of polyethylene and a copolymer of ethylene and ethyl acrylate | |
| CN106854338A (en) | A kind of high rigidity scratch-resistant ABS material and preparation method thereof | |
| JPS60252645A (en) | Ultra-high molecular weight polyethylene composition | |
| EP1787956A1 (en) | Article for film formation, method for film formation, and release agent | |
| CN110862646B (en) | Antibacterial ABS composite material for automotive interior parts and preparation method thereof | |
| DE1170632B (en) | Process for the production of molded articles and laminates based on phthalic acid diallyl esters | |
| EP0079964B1 (en) | Thermoplastic resin products having pearl-like luster | |
| CN105949625A (en) | Polypropylene composite material with spraying-free and high-rigidity metal texture effect and preparation method thereof | |
| US4952625A (en) | Process for improving the flowability of ultrahigh-molecular-weight polyethylene composition | |
| DE4413058A1 (en) | Polypropylene molding compounds | |
| US4221829A (en) | Method for preparing a granular thermosetting novolak resin molding composition | |
| JPS60245656A (en) | Ultra-high-molecular-weight polyethylene composition | |
| DE3247918A1 (en) | Fertiliser sticks comprising plant nutrients and poly-N-vinyl-2-pyrrolidone-containing copolymers | |
| JP3010932B2 (en) | Solid drawing material | |
| JP3023480B2 (en) | Solid drawing material | |
| JPS6317973A (en) | Colorant composition | |
| JPH0465464A (en) | Polyamide-based resin composition for molding | |
| CN1031240A (en) | Long-term odoriferous plastics and manufacture method | |
| KR920005544B1 (en) | Releasing agent and method of producing thereof | |
| JPH02299610A (en) | Resin-made chopstick | |
| CN116535806B (en) | ABS material with low acrylonitrile content and preparation method and application thereof | |
| DE19700528A1 (en) | Molding compounds and process for the production of metallic-looking ceramic moldings | |
| JPS6296550A (en) | Ultra-high-molecular-weight polyethylene composition | |
| JPS601245A (en) | Ultra-high-molecular-weight polyethylene composition | |
| SU364635A1 (en) | POLYMERIC COMPOSITION BASED ON POLYETHYLENE |