JPH02129218A - Preparation of slippery polyacetal resin composition and molded item thereof - Google Patents
Preparation of slippery polyacetal resin composition and molded item thereofInfo
- Publication number
- JPH02129218A JPH02129218A JP28416288A JP28416288A JPH02129218A JP H02129218 A JPH02129218 A JP H02129218A JP 28416288 A JP28416288 A JP 28416288A JP 28416288 A JP28416288 A JP 28416288A JP H02129218 A JPH02129218 A JP H02129218A
- Authority
- JP
- Japan
- Prior art keywords
- polyacetal resin
- amino acid
- weight
- acid powder
- parts
- 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
- 229920006324 polyoxymethylene Polymers 0.000 title claims abstract description 26
- 229930182556 Polyacetal Natural products 0.000 title claims abstract description 22
- 239000011342 resin composition Substances 0.000 title claims description 6
- 150000001413 amino acids Chemical class 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 21
- 229920005989 resin Polymers 0.000 claims abstract description 19
- 239000011347 resin Substances 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 229920005672 polyolefin resin Polymers 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000004898 kneading Methods 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 7
- 239000004472 Lysine Substances 0.000 abstract description 3
- 238000000354 decomposition reaction Methods 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 229920000098 polyolefin Polymers 0.000 abstract description 2
- 238000013329 compounding Methods 0.000 abstract 1
- 235000001014 amino acid Nutrition 0.000 description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- KDXKERNSBIXSRK-YFKPBYRVSA-N L-lysine Chemical compound NCCCC[C@H](N)C(O)=O KDXKERNSBIXSRK-YFKPBYRVSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229920004943 Delrin® Polymers 0.000 description 1
- 235000019766 L-Lysine Nutrition 0.000 description 1
- 239000005639 Lauric acid Substances 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
（技術分野）
本発明は、ポリアセタール樹脂を基材とする摺動性樹脂
組成物及びその成形品の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a sliding resin composition using a polyacetal resin as a base material and a method for producing a molded article thereof.
（従来技術及びその問題点）
ポリアセタール樹脂に固体潤滑剤としてグラファイトを
配合して摺動性組成物を得ることは知られている。特公
昭５７−９３９３号公報には、ポリアセタール樹脂にポ
リエチレンとグラファイトを配合した組成物が記載され
ている。(Prior Art and its Problems) It is known to obtain a slidable composition by blending graphite as a solid lubricant with polyacetal resin. Japanese Patent Publication No. 57-9393 describes a composition in which polyethylene and graphite are blended with a polyacetal resin.
しかし、ポリアセタール樹脂にグラファイトを配合した
組成物においては、熱安定性に劣る。配向により特性値
に方向性が出る等の問題があり、未だ満足し得るもので
はない。However, compositions in which graphite is blended with polyacetal resin have poor thermal stability. There are problems such as directionality in characteristic values due to orientation, and this is not yet satisfactory.
（発明の課題）
本発明は、従来の摺動性ポリアセタール樹脂組成物に見
られる前記問題点を解決することをその課題とする。(Problem of the Invention) An object of the present invention is to solve the above-mentioned problems found in conventional slidable polyacetal resin compositions.
（課題を解決するための手段）
本発明者らは、前記課題を解決するために鋭意研究を重
ねた結果、鱗片状アミノ酸粉末を固体潤滑剤としてポリ
アセタール樹脂に配合することによってその課題を解決
し得ることを見出し、本発明を完成するに到った。(Means for Solving the Problems) As a result of extensive research in order to solve the above problems, the present inventors have solved the problems by blending flaky amino acid powder into polyacetal resin as a solid lubricant. The present invention was completed based on the discovery that the present invention can be obtained.
即ち１本発明によれば、ポリアセタール樹脂に対し、鱗
片状アミノ酸粉末を配合したことを特徴とする摺動性ポ
リアセタール樹脂組成物が提供される。また、その樹脂
組成物を原料とした成形品の製造方法が提供される。That is, according to one aspect of the present invention, there is provided a sliding polyacetal resin composition characterized in that a flaky amino acid powder is blended into a polyacetal resin. Further, a method for manufacturing a molded article using the resin composition as a raw material is provided.
本発明で固体潤滑剤として用いる鱗片状アミノ酸粉末（
以下、単にアミノ酸粉末とも言う）としては１分解温度
１９０℃以上のものであれば任意のものが用いられる。Flaky amino acid powder used as a solid lubricant in the present invention (
Any amino acid powder can be used as long as it has a decomposition temperature of 190° C. or higher (hereinafter also simply referred to as amino acid powder).
このようなものとしては、例えば、天然アミノ酸である
Ｌ−リジンとラウリン酸より得られるＮ９−ラウロイル
−し−リジンが挙げられる。Examples of such compounds include, for example, N9-lauroyl-cys-lysine obtained from the natural amino acids L-lysine and lauric acid.
また、その平均粒径は５〜３０−１好ましくは１０〜２
０−である、アミノ酸粉末の配合割合は、ポリアセター
ル樹脂１００重量部に対し、 １−２０重量部、好まし
くは１．５〜１５重量部の割合である。In addition, the average particle size is 5 to 30-1, preferably 10 to 2
The blending ratio of the 0-amino acid powder is 1-20 parts by weight, preferably 1.5-15 parts by weight, based on 100 parts by weight of the polyacetal resin.
また、このアミノ酸粉末は、ポリオレフィン系樹脂と併
用するのが好ましい、ポリオレフィン系樹脂としては、
ポリエチレンの他、その酢酸ビニル等の他のモノマーと
の共重合体あるいは脂肪酸とのグラフト重合体等が用い
られる。ポリオレフィン系樹脂の配合割合は、ポリアセ
タール樹脂１００重量部に対し１．５〜２５重量部、好
ましくは２〜１５重量部の割合である。また、アミノ酸
粉末１００重量部に対し４０〜４００重量部、好ましく
は７０〜２４０重量部の割合である。In addition, it is preferable to use this amino acid powder in combination with a polyolefin resin.
In addition to polyethylene, copolymers thereof with other monomers such as vinyl acetate or graft polymers with fatty acids are used. The blending ratio of the polyolefin resin is 1.5 to 25 parts by weight, preferably 2 to 15 parts by weight, per 100 parts by weight of the polyacetal resin. Further, the proportion is 40 to 400 parts by weight, preferably 70 to 240 parts by weight, per 100 parts by weight of the amino acid powder.
ポリアセタール樹脂にアミノ酸粉末とポリオレフィン系
樹脂を配合する場合、アミノ酸粉末とポリオレフィン系
樹脂とを溶融混合し、冷却固形化した固形化物として配
合するのが好ましい、固形化物はペレット状である他、
その粉砕化物であることができる。アミノ酸粉末をこの
ようなポリオレフィン系樹脂との固形化物としてポリア
セタール樹脂に配合する時には、アミノ酸粉末はポリオ
レフィン系樹脂を介してポリアセタール樹脂に混合分散
されることになるので、成形安定性が向上するとともに
、アミノ酸粉末の摩擦界面への必要以上の露出が抑制さ
れるので、アミノ酸粉末による潤滑効果の持続時間が長
くなる。When blending amino acid powder and polyolefin resin with polyacetal resin, it is preferable to blend the amino acid powder and polyolefin resin as a solidified product by melt-mixing and cooling, and the solidified product is in the form of pellets.
It can be a pulverized product thereof. When the amino acid powder is blended with the polyacetal resin as a solidified product with such a polyolefin resin, the amino acid powder is mixed and dispersed in the polyacetal resin via the polyolefin resin, so molding stability is improved, and Since unnecessary exposure of the amino acid powder to the friction interface is suppressed, the duration of the lubricating effect of the amino acid powder is extended.
本発明の組成物から成形品を得るには、前記各配合成分
を溶融混合し、この混合物を押出成形又は射出成形すれ
ばよい、成形品の形状としては。In order to obtain a molded article from the composition of the present invention, the above-mentioned components may be melt-mixed, and this mixture may be extrusion molded or injection molded.
シート状や棒状の他、円板状、リング状等の各種の形状
とすることができる。また、シート状物は、これを打抜
き加工することにより、各種形状の成形品とすることが
できる。好ましい成形品は、ポリエチレン系樹脂とアミ
ノ酸粉末との溶融混合物の冷却固形化物をポリアセター
ル樹脂に配合したものを成形原料として用いることによ
り得ることができる。In addition to a sheet shape and a rod shape, it can be made into various shapes such as a disk shape and a ring shape. Moreover, the sheet-like material can be made into molded products of various shapes by punching it. A preferred molded article can be obtained by using as a molding raw material a cooled solidified product of a molten mixture of a polyethylene resin and an amino acid powder mixed with a polyacetal resin.
（発明の効果）
本発明の組成物から得られる成形品は、固体潤滑剤とし
て用いたアミノ酸粉末の潤滑作用により非常に摺動性（
滑り性）のよいもので、各種摺動部材として用いること
ができる。(Effects of the Invention) Molded articles obtained from the composition of the present invention have excellent sliding properties (
It has good sliding properties and can be used as various sliding members.
（実施例） 次に本発明を実施例によりさらに詳細に説明する。(Example) Next, the present invention will be explained in more detail with reference to Examples.
実施例１
ポリアセタール樹脂（デルリンＬＯＯＮＣＩＯ，ＡＳＴ
Ｍ Ｄ−１５０５による密度：１．４２ｇ／ｃｅ、 Ａ
ＳＴＭ Ｄ−１２３８によるメルトインデックス（ＭＩ
） ： １．Ｏｇ／１０分、ＡＳＴＭ Ｄ−７５９によ
る融点：１７５℃、デュポン社製）（以下、ＰＯＭと略
記する）を基材樹脂として用い、また、鱗片状アミノ酸
粉末（平均粒径：１０〜２０．）（Ｎε−ラウロイル−
し−リジン、商品名：アミホープＬＬ、味の素社Ｉｔ）
（以下、アミホープＬＬと略記する）４０重量部とポリ
オレフィン系樹脂（接着性ポリオレフィン：アトマーＮ
Ｒ−１０６、＾ＳＴＭＤ−１５０５による密度：０．９
３ｇ／ｃｃ、 ＡＳＴＭ Ｄ−７５９による融点１２０
℃、粒径：３０メツシユパス、三井石油化学工業製）（
以下アトマーと略記する）６０重量部からなる溶融混合
物の冷却固形化物（ペレット状、粒径：２＋ａｍ）を潤
滑付与材として用いた。Example 1 Polyacetal resin (Delrin LOONCIO, AST
Density according to MD-1505: 1.42g/ce, A
Melt index (MI
): 1. Og/10 minutes, melting point according to ASTM D-759: 175°C, manufactured by DuPont (hereinafter abbreviated as POM) was used as the base resin, and scaly amino acid powder (average particle size: 10-20. (Nε-Lauroyl-
Lysine, product name: Amihope LL, Ajinomoto Co., Ltd.)
(hereinafter abbreviated as Amihope LL) and polyolefin resin (adhesive polyolefin: Atmer N
R-106, ^STMD-1505 density: 0.9
3g/cc, melting point 120 according to ASTM D-759
°C, particle size: 30 mesh pass, manufactured by Mitsui Petrochemical Industries) (
A cooled solidified product (pellet form, particle size: 2+am) of a molten mixture consisting of 60 parts by weight (hereinafter abbreviated as atomer) was used as a lubrication imparting material.
この潤滑付与材１０重量部をＰＯＭ９０重量部に配合し
、シート金型をセットした押出機でローター温度１７８
℃、ヘッド温度１８０℃の条件でシート状に押し出し、
冷却ロール（トップロール温度１２０℃、センターロー
ル温度１３０℃）で冷却し、厚さ０．４ｍｍ、幅３０ｍ
ｍのシートとした。この押出成形においては、１時間後
も安定してシートを製造することが出来た。10 parts by weight of this lubrication imparting material was blended with 90 parts by weight of POM, and the rotor temperature was 178° using an extruder equipped with a sheet mold.
℃, head temperature 180℃, extruded into a sheet shape,
Cooled with cooling rolls (top roll temperature 120°C, center roll temperature 130°C), thickness 0.4 mm, width 30 m.
It was made into a sheet of m. In this extrusion molding, the sheet could be stably manufactured even after one hour.
比較例Ｉ
ＰＯＭ９０重量部、アトマー６重量部及びアミホープＬ
Ｌ４重量部を同時に溶融混合し、実施例と同様にしてシ
ート化した。シートは徐々に着色が激しくなり１５分後
に分解により製造が出来なくなった。Comparative Example I 90 parts by weight of POM, 6 parts by weight of Atomer and Amihope L
4 parts by weight of L4 were simultaneously melt-mixed and formed into a sheet in the same manner as in the example. The sheet gradually became more intensely colored, and after 15 minutes it could no longer be manufactured due to decomposition.
比較例２
ＰＯＭ９０重量部とグラファイト（平均粒径約１０ｐｍ
）４重量部とアトマー６重量部の溶融混合物の冷却固形
化物（ペレット状、粒径： ２ｍｍ）を１０重量部添加
混合し実施例１と同じようにしてシートを製造した。Comparative Example 2 90 parts by weight of POM and graphite (average particle size of about 10 pm)
A sheet was produced in the same manner as in Example 1 by adding and mixing 10 parts by weight of a cooled solidified product (pellets, particle size: 2 mm) of a molten mixture of 4 parts by weight of ) and 6 parts by weight of attomer.
次に、前記で得た各シートから得たサンプルシート片（
縦５０Ｉ１ｍ、横５０ｍｍ、厚さ０．４＋ｗ＋＊）と、
Ｓ−４５Ｃ製リングを、荷重１ｋｇ／ａ＃、速度０．５
Ｍ／秒の条件で。Next, sample sheet pieces obtained from each sheet obtained above (
Height: 50I1m, Width: 50mm, Thickness: 0.4+w+*)
S-45C ring, load 1kg/a#, speed 0.5
Under the condition of M/sec.
摩擦摩耗試験機（オリエンチック社製、モデルＥＦＭ−
ｍ−Ｅ）により試験し、摩擦試験開始から１０分後及び
５０分後における摩擦係数を測定した。その結果を表−
１に示す。Friction and wear tester (manufactured by Orientic, model EFM-
m-E), and the friction coefficients were measured 10 minutes and 50 minutes after the start of the friction test. Table the results.
Shown in 1.
表−１Table-1
Claims (3)
を配合したことを特徴とする摺動性ポリアセタール樹脂
組成物。(1) A sliding polyacetal resin composition characterized by blending flaky amino acid powder with a polyacetal resin.
物の形でポリアセタール樹脂に配合する請求項１の組成
物。(2) The composition according to claim 1, wherein the amino acid powder is blended with the polyacetal resin in the form of a mixture with a polyolefin resin.
アミノ酸粉末２０〜７０重量％との溶融混合物の冷却固
形化物を、ポリアセタール樹脂１００重量部に対し、５
〜３０重量部の割合で配合し、溶融混練し、成形するこ
とを特徴とする摺動性成形品の製造方法。(3) Cool and solidify a molten mixture of 30 to 80% by weight of polyolefin resin and 20 to 70% by weight of flaky amino acid powder to 100 parts by weight of polyacetal resin,
A method for producing a slidable molded article, which comprises blending in a proportion of ~30 parts by weight, melt-kneading, and molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28416288A JPH02129218A (en) | 1988-11-10 | 1988-11-10 | Preparation of slippery polyacetal resin composition and molded item thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28416288A JPH02129218A (en) | 1988-11-10 | 1988-11-10 | Preparation of slippery polyacetal resin composition and molded item thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02129218A true JPH02129218A (en) | 1990-05-17 |
Family
ID=17674986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28416288A Pending JPH02129218A (en) | 1988-11-10 | 1988-11-10 | Preparation of slippery polyacetal resin composition and molded item thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02129218A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009101028A1 (en) | 2008-02-13 | 2009-08-20 | Basf Se | Coated polyoxymethylenes |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50106882A (en) * | 1973-12-28 | 1975-08-22 |
-
1988
- 1988-11-10 JP JP28416288A patent/JPH02129218A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50106882A (en) * | 1973-12-28 | 1975-08-22 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009101028A1 (en) | 2008-02-13 | 2009-08-20 | Basf Se | Coated polyoxymethylenes |
| JP2011511872A (en) * | 2008-02-13 | 2011-04-14 | ビーエーエスエフ ソシエタス・ヨーロピア | Coated polyoxymethylene |
| US8426023B2 (en) | 2008-02-13 | 2013-04-23 | Basf Se | Coated polyoxymethylenes comprising a formaldehyde scavenger comprising a lysine compound |
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