JPH0641545B2 - Polypropylene composition - Google Patents
Polypropylene compositionInfo
- Publication number
- JPH0641545B2 JPH0641545B2 JP63319369A JP31936988A JPH0641545B2 JP H0641545 B2 JPH0641545 B2 JP H0641545B2 JP 63319369 A JP63319369 A JP 63319369A JP 31936988 A JP31936988 A JP 31936988A JP H0641545 B2 JPH0641545 B2 JP H0641545B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- polypropylene
- composition
- acid amide
- 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.)
- Expired - Fee Related
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Gears, Cams (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は摩擦摩耗特性に優れたポリプロピレン組成物に
関する。詳しくは射出成形用ポリプロピレン組成物に関
する。TECHNICAL FIELD The present invention relates to a polypropylene composition having excellent friction and wear characteristics. Specifically, it relates to a polypropylene composition for injection molding.
ポリプロピレン樹脂は、その優れた剛性、加工性、耐熱
性、機械的特性等により機械、電気・電子分野等におい
て、種々の成形品、特に射出成形品に適用されている。
しかし、自己潤滑性に劣るため、高荷重、高速度で摺動
する部品に適用した場合、容易に焼き付いてしまうとい
う欠点を有していた。このような問題点を解決する手段
として、フッソ樹脂や二硫化モリブデン等を添加する方
法が一般的に行なわれている。しかし、かかる組成物は
摩擦摩耗特性、特にJIS K7218により測定し得る限界Ｐ
Ｖ値の改良効果が十分でなく、一層の改良が望まれてい
た。BACKGROUND ART Polypropylene resin is applied to various molded products, particularly injection molded products, in the fields of machinery, electric / electronics, etc. due to its excellent rigidity, processability, heat resistance, mechanical properties and the like.
However, since it is inferior in self-lubricating property, it has a drawback that it is easily seized when applied to a component that slides at a high load and a high speed. As a means for solving such a problem, a method of adding a fluorine resin, molybdenum disulfide or the like is generally performed. However, such a composition has a frictional wear property, particularly a limit P that can be measured according to JIS K7218.
The effect of improving the V value is not sufficient, and further improvement has been desired.
本発明者等は、上記問題を解決すべく鋭意検討した。そ
の結果、ポリプロピレンに特定の化合物を添加すること
により、摩擦摩耗特性、特に限界ＰＶ値の優れたポリプ
ロピレン組成物が得られることを見出し、本発明を提案
するに至った。即ち、本発明はポリプロピレン １００
重量部と、下記式(1) RCONHR′ (1) （但し、ＲおよびＲ′は、夫々炭素数が１０〜３０の同
種または異種の脂肪族炭化水素基である）で示されるＮ
−置換脂肪酸アマイド 0.5〜10重量部よりなることを
特徴とする射出成形用ポリプロピレン組成物である。The present inventors diligently studied to solve the above problems. As a result, they have found that by adding a specific compound to polypropylene, it is possible to obtain a polypropylene composition having excellent friction and wear characteristics, particularly a limiting PV value, and have proposed the present invention. That is, the present invention relates to polypropylene 100
Parts by weight and N represented by the following formula (1) RCONHR '(1) (wherein R and R'are the same or different aliphatic hydrocarbon groups having 10 to 30 carbon atoms)
A polypropylene composition for injection molding, comprising 0.5 to 10 parts by weight of a substituted fatty acid amide.
本発明においては、特にRCONHR′（但しＲ及びＲ′は前
記のとおり）で表される脂肪酸アミドを用いることが必
須である。従来フィルムの滑り性を改良する目的で多く
の種類の脂肪酸アミドが滑剤として提案されている。し
かしながら、フィルムの滑り性と本発明の摩擦摩耗特性
とは全く異なる物性であり、フィルムの滑り性とは何等
の関連性もないものである。In the present invention, it is essential to use a fatty acid amide represented by RCONHR '(where R and R'are as described above). Conventionally, many kinds of fatty acid amides have been proposed as lubricants for the purpose of improving the slipperiness of films. However, the slidability of the film and the friction and wear characteristics of the present invention are completely different physical properties and have no relation to the slidability of the film.
本発明において、ポリプロピレンとしては、プロピレン
の単独重合体、５０モル％以上のプロピレンとエチレ
ン、ブテン−１等のプロピレン以外のα−オレフィンと
のブロック共重合体、ランダム共重合体、グラフト共重
合体等の共重合体及びこれらの混合物等が用いられる。In the present invention, as the polypropylene, a homopolymer of propylene, a block copolymer of 50 mol% or more of propylene and an α-olefin other than propylene such as ethylene and butene-1, a random copolymer, a graft copolymer. Etc. and copolymers thereof and the like are used.
前記一般式(1)のＲ及びＲ′で示される脂肪族炭化水素
基は、それぞれ炭素数が１０〜３０、好ましくは１５〜
２５の範囲内であることが重要である。即ち、Ｒ及び
Ｒ′で示される脂肪族炭化水素基の炭素数が３０を越え
る場合には摩擦摩耗特性の改良効果が十分でなく、本発
明の目的を達成できない。また、１０未満ではブリード
による製品外観の不良が発生するばかりでなく、剛性等
の機械物性が低下し、好ましくない。The aliphatic hydrocarbon groups represented by R and R'in the general formula (1) each have 10 to 30 carbon atoms, preferably 15 to 30 carbon atoms.
It is important to be in the range of 25. That is, when the number of carbon atoms of the aliphatic hydrocarbon group represented by R and R'exceeds 30, the effect of improving the friction and wear characteristics is insufficient and the object of the present invention cannot be achieved. On the other hand, if it is less than 10, not only is the appearance of the product deteriorated due to bleeding, but mechanical properties such as rigidity are deteriorated, which is not preferable.
このような脂肪族炭化水素基としては、ウンデシル基、
トリデシル基、ペンタデシル基、ヘンイコシル基、ヘプ
タデシル基などのアルキル基、９−オクタデセニル基等
のアルケニル基などが挙げられる。As such an aliphatic hydrocarbon group, an undecyl group,
Examples thereof include an alkyl group such as a tridecyl group, a pentadecyl group, a henicosyl group, and a heptadecyl group, an alkenyl group such as a 9-octadecenyl group, and the like.
Ｎ−置換脂肪酸アマイドの添加量は、ポリプロピレン１
００重量部に対して0.5〜１０重量部、好ましくは１〜
７重量部である。添加量が0.5重量部未満では摩擦摩耗
特性の改良効果が十分でなく、１０重量部を越える場合
にはブリードの問題の外、剛性等の機械物性が低下し好
ましくない。The amount of N-substituted fatty acid amide added is polypropylene 1
0.5 to 10 parts by weight, preferably 1 to 100 parts by weight
7 parts by weight. If the addition amount is less than 0.5 parts by weight, the effect of improving the friction and wear characteristics is not sufficient, and if it exceeds 10 parts by weight, mechanical properties such as rigidity are deteriorated in addition to the problem of bleeding, which is not preferable.
本発明においては、上記のＮ−置換脂肪酸アマイドに加
えてポリブテン−１をポリプロピレン１００重量部に対
して１〜４０重量部、好ましくは５〜３０重量部の範囲
で添加することが、得られるポリプロピレン組成物を摺
動材料として使用したときの消音特性が改良されるため
に好ましい。ポリブテン−１としては、ブテン−１の単
独重合体又はブテン−１が７０モル％以上の共重合体が
用いられる。In the present invention, in addition to the above N-substituted fatty acid amide, polybutene-1 is added in an amount of 1 to 40 parts by weight, preferably 5 to 30 parts by weight, based on 100 parts by weight of polypropylene. It is preferable because the silencing property is improved when the composition is used as a sliding material. As the polybutene-1, a homopolymer of butene-1 or a copolymer of butene-1 of 70 mol% or more is used.
また、本発明においては、前記のＮ−置換脂肪酸アマイ
ドに加えて、平均分子量が100,000以上のオルガノポリ
シロキサンをポリプロピレン１００重量部に対して0.5
〜２０重量部、好ましくは２〜１０重量部の範囲で添加
することが、得られるポリプロピレン組成物の摩擦摩耗
特性をさらに向上させることができるために好ましい。
上記のオルガノポリシロキサンの平均分子量は、得られ
るポリプロピレン組成物の摩擦摩耗特性の向上の観点か
ら、200,000〜1,000,000の範囲であることが好ましい。In addition, in the present invention, in addition to the N-substituted fatty acid amide, an organopolysiloxane having an average molecular weight of 100,000 or more is added in an amount of 0.5 to 100 parts by weight of polypropylene.
-20 parts by weight, preferably 2 to 10 parts by weight is preferable in order to further improve the friction and wear characteristics of the obtained polypropylene composition.
The average molecular weight of the above organopolysiloxane is preferably in the range of 200,000 to 1,000,000 from the viewpoint of improving the friction and wear characteristics of the polypropylene composition obtained.
本発明で使用されるオルガノポリシロキサンの種類は、
公知のものが何ら制限なく使用される。例えば、ジメチ
ルポリシロキサン、ジエチルポリシロキサン、メチルエ
チルポリシロキサン、及びジフェニルポリシロキサン等
を挙げることができる。The type of organopolysiloxane used in the present invention is
Known ones are used without any limitation. For example, dimethyl polysiloxane, diethyl polysiloxane, methyl ethyl polysiloxane, diphenyl polysiloxane, etc. can be mentioned.
尚、本発明の組成物には、発明の効果を損なわない範囲
で、適宜各種の添加剤を配合することができる。具体的
には、酸化防止剤、光安定剤、帯電防止剤、滑剤、顔
料、核剤、充填剤、難燃剤等があげられる。In addition, various additives can be appropriately added to the composition of the present invention as long as the effects of the present invention are not impaired. Specific examples include antioxidants, light stabilizers, antistatic agents, lubricants, pigments, nucleating agents, fillers, flame retardants and the like.
以上の説明より理解されるごとく、本発明のポリプロピ
レン組成物は、耐摩耗性に優れており、ギヤ、カム等の
摺動部品に有用な組成物である。As can be understood from the above description, the polypropylene composition of the present invention has excellent wear resistance and is useful for sliding parts such as gears and cams.
以下、本発明を具体的に説明するため、実施例を示す
が、本発明はこれらの実施例に限定されるものではな
い。Examples are shown below for specifically explaining the present invention, but the present invention is not limited to these examples.
実施例１ メルトフローインデックス２０ｇ／１０minのプロピレ
ンの単独重合体１００重量部に、オレイルステアリン酸
アマイド（前記一般式(1)中のＲ及びＲ′が夫々炭素数
１７のアルキル基及び炭素数１７のアルケニル基であ
る。）を表−１の割合で添加した組成物を作った。この
組成物を原料にして、１５０ton射出成形機で外径25.6m
m、内径20.0mm、高さ1.5mmの摩耗試験片を作成した。摩
耗試験は鈴木式摩擦摩耗試験機を使用し、ＪＩＳ Ｋ７
２１８に従い相手材料Ｓ４５Ｃで摩擦速度及び荷重を変
えて摩擦摩耗試験を行い、焼き付きが発生しない限界Ｐ
Ｖ値を測定した。また、機械物性として曲げ弾性率の測
定を行い、同時に試験片の外観を目視で観察した。結果
を表−１に示した。Example 1 100 parts by weight of a propylene homopolymer having a melt flow index of 20 g / 10 min was mixed with oleylstearic acid amide (wherein R and R'in the general formula (1) each represent an alkyl group having 17 carbon atoms and a carbon number of 17). An alkenyl group) was added in the ratio shown in Table 1 to prepare a composition. Using this composition as a raw material, the outer diameter is 25.6 m on a 150 ton injection molding machine.
A wear test piece with m, inner diameter 20.0 mm, and height 1.5 mm was prepared. For the abrasion test, a Suzuki type friction and abrasion tester was used, and JIS K7
In accordance with 218, a frictional wear test is performed by changing the friction speed and the load on the mating material S45C, and the limit P at which seizure does not occur
The V value was measured. Further, the flexural modulus was measured as a mechanical property, and at the same time, the appearance of the test piece was visually observed. The results are shown in Table-1.
実施例２ メルトフローインデックス１０ｇ／１０minのプロピレ
ンの単独重合体１００重量部に、RCONHR′のＲ及びＲ′
の炭素数が表−２に示されるようなＮ−置換脂肪酸アマ
イド及び比較のためにベヘニン酸アミドとヘキサメチレ
ンビスエルカ酸アミドを各を５重量部添加した組成物を
作った。以下、実施例１と同様な方法で限界ＰＶ値、機
械物性、外観の測定を行った。結果を表−２に示した。 Example 2 100 parts by weight of a propylene homopolymer having a melt flow index of 10 g / 10 min was mixed with R and R'of RCONHR '.
A composition was prepared by adding 5 parts by weight of each of N-substituted fatty acid amides having carbon numbers of 2 to 5 and behenic acid amide and hexamethylenebiserucic acid amide for comparison. Hereinafter, the limiting PV value, mechanical properties, and appearance were measured in the same manner as in Example 1. The results are shown in Table-2.
実施例３ メルトフローインデックス１０ｇ／１０minのプロピレ
ンの単独重合体１００重量部にステアリルエルカ酸アマ
イドを５重量部、分子量４５万のジメチルポリシロキサ
ンを表−３の割合で添加した組成物を作り、実施例１と
同様な方法で摩擦摩耗試験を行った。結果を表−３に示
す。 Example 3 A composition was prepared in which 5 parts by weight of stearyl erucic acid amide and 5 parts by weight of dimethylpolysiloxane having a molecular weight of 450,000 were added to 100 parts by weight of a propylene homopolymer having a melt flow index of 10 g / 10 min, and the composition was prepared. A friction and wear test was conducted in the same manner as in Example 1. The results are shown in Table-3.
実施例４ メルトフローインデックス１０ｇ／１０minのプロピレ
ンの単独重合体１００重量部にオレイル−ステアリン酸
アマイド及びブテン−１の単独重合体を表−４の割合で
添加した組成物を作った。この組成物を原料にして、実
施例１と同様な方法で摩耗試験片を作成し、同一条件で
摩擦摩耗試験を行った。さらに１００×１００×2.0ｔ
の試験片を作成し、振動減衰法（技報堂「騒音対策ハン
ドブック」）で強制振動時における損失係数の測定を行
った。 Example 4 A composition was prepared by adding 100 parts by weight of a homopolymer of propylene having a melt flow index of 10 g / 10 min with a homopolymer of oleyl-stearic acid amide and butene-1 in a ratio shown in Table 4. Using this composition as a raw material, a wear test piece was prepared in the same manner as in Example 1, and a friction wear test was conducted under the same conditions. Further 100 × 100 × 2.0t
The test piece was prepared and the loss factor during forced vibration was measured by the vibration damping method (Gihodo "Noise Countermeasure Handbook").
比較例 メルトフローインデックス２０ｇ／１０minのプロピレ
ンの単独重合体１００重量部にステアリン酸アミドを５
重量部加えた組成物について、実施例１と全く同様にし
て摩耗試験を行なった。その結果、限界ＰＶ値は１７０
kg／cm・Ｓ、曲げ弾性率は10,000kg／cm2、外観は不良
であった。 Comparative Example 5 Stearic acid amide was added to 100 parts by weight of a propylene homopolymer having a melt flow index of 20 g / 10 min.
An abrasion test was conducted on the composition added by weight in the same manner as in Example 1. As a result, the limit PV value is 170
kg / cm · S, flexural modulus was 10,000 kg / cm 2 , and appearance was poor.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０８Ｌ 23:20 83:04） ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 5 Identification code Office reference number FI technical display area C08L 23:20 83:04)
Claims (3)
は異種の脂肪族炭化水素基である。） で示されるＮ−置換脂肪酸アマイド 0.5〜10重量部 よりなる射出成形用ポリプロピレン組成物。(A) 100 parts by weight of polypropylene (b) The following formula RCONHR '(wherein R and R'are the same or different aliphatic hydrocarbon groups each having 10 to 30 carbon atoms). A polypropylene composition for injection molding comprising 0.5 to 10 parts by weight of the indicated N-substituted fatty acid amide.
は異種の脂肪族炭化水素基である。） で示されるＮ−置換脂肪酸アマイド 0.5〜10重量部 (c)ポリブテン−１ １〜40重量部 よりなる射出成形用ポリプロピレン組成物。2. (a) 100 parts by weight of polypropylene (b) The following formula RCONHR '(wherein R and R'are the same or different aliphatic hydrocarbon groups each having 10 to 30 carbon atoms). A polypropylene composition for injection molding, which comprises 0.5 to 10 parts by weight of the indicated N-substituted fatty acid amide (c) polybutene-11 to 40 parts by weight.
は異種の脂肪族炭化水素基である。） で示されるＮ−置換脂肪酸アマイド 0.5〜10重量部 (c)平均分子量100,000以上のオルガノポリシロキサン
0.5〜20重量部 よりなる射出成形用ポリプロピレン組成物。3. (a) 100 parts by weight of polypropylene (b) The following formula RCONHR '(wherein R and R'are the same or different aliphatic hydrocarbon groups each having 10 to 30 carbon atoms). Shown N-substituted fatty acid amide 0.5 to 10 parts by weight (c) Organopolysiloxane having an average molecular weight of 100,000 or more
A polypropylene composition for injection molding comprising 0.5 to 20 parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63319369A JPH0641545B2 (en) | 1988-12-20 | 1988-12-20 | Polypropylene composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63319369A JPH0641545B2 (en) | 1988-12-20 | 1988-12-20 | Polypropylene composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02166141A JPH02166141A (en) | 1990-06-26 |
| JPH0641545B2 true JPH0641545B2 (en) | 1994-06-01 |
Family
ID=18109380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63319369A Expired - Fee Related JPH0641545B2 (en) | 1988-12-20 | 1988-12-20 | Polypropylene composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0641545B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08228855A (en) * | 1995-02-28 | 1996-09-10 | Sukemasa Nakamoto | Kitchenette to be easily transported and assembled |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2516283B2 (en) * | 1991-03-27 | 1996-07-24 | 株式会社トクヤマ | Method for producing polypropylene resin molded product |
| JP5890740B2 (en) * | 2012-04-25 | 2016-03-22 | 出光ライオンコンポジット株式会社 | Polypropylene resin composition |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6185458A (en) * | 1984-10-04 | 1986-05-01 | Mitsubishi Petrochem Co Ltd | Propylene copolymer laminated film |
| JP2613375B2 (en) * | 1986-06-11 | 1997-05-28 | 住友化学工業株式会社 | Polypropylene stretched film |
-
1988
- 1988-12-20 JP JP63319369A patent/JPH0641545B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08228855A (en) * | 1995-02-28 | 1996-09-10 | Sukemasa Nakamoto | Kitchenette to be easily transported and assembled |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02166141A (en) | 1990-06-26 |
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| LAPS | Cancellation because of no payment of annual fees |