JPS601245A - Ultra-high-molecular-weight polyethylene composition - Google Patents
Ultra-high-molecular-weight polyethylene compositionInfo
- Publication number
- JPS601245A JPS601245A JP11115283A JP11115283A JPS601245A JP S601245 A JPS601245 A JP S601245A JP 11115283 A JP11115283 A JP 11115283A JP 11115283 A JP11115283 A JP 11115283A JP S601245 A JPS601245 A JP S601245A
- Authority
- JP
- Japan
- Prior art keywords
- ultra
- weight polyethylene
- molecular weight
- molecular
- high 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.)
- Pending
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は、超高分子量ポリエチレン組成物に関する。[Detailed description of the invention] The present invention relates to ultra-high molecular weight polyethylene compositions.
分子量が100万以上の超高分子量ポリエチレンは9通
禽のポリエチレンに比べて耐摩耗性、耐衝撃性等多くの
点で優れた特性を有している。ところが、超高分子量ポ
リエチレンは溶融粘度が高いため成形性が非常に悪いと
いった欠点があり。Ultra-high molecular weight polyethylene with a molecular weight of 1,000,000 or more has superior properties in many respects, such as wear resistance and impact resistance, as compared to polyethylene of 90% polyethylene. However, ultra-high molecular weight polyethylene has a drawback of extremely poor moldability due to its high melt viscosity.
生産性の低い圧縮成形法でしか成形できないといった問
題がある。従ってシート等の薄物成形や異形成形は一段
成形では到底行えず、薄物を得るには厚物をスライスし
たり、また異形物を得るには削り出しによって行ってい
るのが現状である。There is a problem in that it can only be molded by compression molding, which has low productivity. Therefore, molding of thin objects such as sheets or irregular shapes cannot be achieved by one-step molding, and currently, thin objects are obtained by slicing thick objects, and irregularly shaped objects are obtained by cutting.
上記のような超高分子量ポリエチレンの欠点を解消する
には2粒子合着の下に1流れ性をもたせて成形時の低粘
度化を図ることが必要である。In order to eliminate the above-mentioned drawbacks of ultra-high molecular weight polyethylene, it is necessary to provide one flowability after the two-particle coalescence to lower the viscosity during molding.
これまでに超高分子量ポリエチレンに添加剤を配合して
成形性を改良することが試みられている。Attempts have been made to improve moldability by adding additives to ultra-high molecular weight polyethylene.
例えば、特開昭55.−139442号公報には熱硬化
性ポリイミド樹脂を特定量配合した超高分子量ポリエチ
レン組成物が、また、特開昭57−1’) 331 り
号公報には脂肪族化合物及び脂環族化合物の群より選ば
れる常温固形の流れ性改良剤の単独又は2種以上の混合
物を配合した超高分子量ポリエチレン組成物が提案され
ている。しかし。For example, Japanese Patent Application Publication No. 1983. JP-A-139442 discloses an ultra-high molecular weight polyethylene composition containing a specific amount of thermosetting polyimide resin, and JP-A-57-1') 331 discloses a group of aliphatic compounds and alicyclic compounds. Ultra-high molecular weight polyethylene compositions have been proposed in which one or a mixture of two or more selected flow improvers that are solid at room temperature are blended. but.
いずれの組成物も満足な低粘度化を得るに致っておらず
、従って効率のよい押出成形は望めない。None of the compositions has been able to achieve a satisfactory viscosity reduction, and therefore efficient extrusion cannot be expected.
本発明は、薄物でも異形物でも物性を損なうことなく容
易に成形することのできる超高分子量ポリエチレン組成
物を提供することを目的と]−る。An object of the present invention is to provide an ultra-high molecular weight polyethylene composition that can be easily molded into thin or irregularly shaped objects without impairing their physical properties.
本発明の要旨は9分子量100万以上の超高分子量ポリ
エチレンに芳香環化合物、芳香環化合物誘導体、及びそ
れらのハロゲン化合物の群よりなる化合物のうち少なく
とも1種類と脂肪族のC,1〜C32カルボン酸塩とが
配されてなる。[11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 ultra-high molecular weight polyethylene with a molecular weight of 1 million or more, at least one compound selected from the group consisting of aromatic ring compounds, aromatic ring compound derivatives, and their halogen compounds, and an aliphatic C,1-C32 carbon. It is arranged with an acid salt. [11 High molecular weight polyethylene compositions]
本発明に用いる芳香環化合物としては1例えばエチルベ
ンゼン、n−ヘキシルベンゼン、シクロヘキシルベンゼ
ン、n−ブチルヘンゼン、C3,5−トリエチルベンゼ
ン、メシチレン(C(+13 (CI+、 )3)、イ
ソデュレン(Ct112 (CH2)+) (以上液体
)。Examples of aromatic ring compounds used in the present invention include ethylbenzene, n-hexylbenzene, cyclohexylbenzene, n-butylhenzene, C3,5-triethylbenzene, mesitylene (C(+13 (CI+, )3), isodurene (Ct112 (CH2)) +) (more than liquid).
、デュレン(C4H3(CH3)+) 、ペンタメチル
ベンゼン、ヘキサメチルベンゼン、ヘキサメチルベンゼ
ン、(以上固体)等が挙げられる。, durene (C4H3(CH3)+), pentamethylbenzene, hexamethylbenzene, hexamethylbenzene (all solids), and the like.
また、芳香環化合物誘導体としては9例えば。Examples of aromatic ring compound derivatives include 9.
ナフタレンやインデン等が挙げられる。Examples include naphthalene and indene.
上記各化合物のハロゲン化合物としては1例えば、クロ
ルトルエン、2〜クロルパラキシレン(以上液体)、パ
ラジク口ルヘンゼン、ジクロロナフタレン(以上固体)
等が挙げられる。The halogen compounds for each of the above compounds include 1, for example, chlorotoluene, 2 to chloroparaxylene (liquid), parasitic ruhenzene, dichloronaphthalene (solid)
etc.
そして、上記各化合物の群よりなる化合物のうち少なく
とも1種類を超高分子皇ポリエチし・ンに配するわりで
あるが、その割合は2例えば、超高分子量ポリエチレン
100重量部に対して5〜70車p部が好ましい。これ
ら各化合物は粘度低下剤としての役割がある。At least one compound from each group of the above-mentioned compounds is added to the ultra-high molecular weight polyethylene in a ratio of 2 to 5, for example, to 100 parts by weight of ultra-high molecular weight polyethylene. 70 car p part is preferred. Each of these compounds plays a role as a viscosity reducing agent.
また2本発明に用いる脂肪族のカルボン酸塩としては、
熱履歴に対する活性の持続性がよいC+z〜Cnのもの
が好ましく2例えば、ステアリン酸カルシウムやモンク
ン酸カルシウム等が挙げられる。配合割合としては9例
えば、超高分子量ポリエチレン100重量部に対して0
.1〜20重h[部が好ましい。この塩は滑性調整剤と
しての働きがある。In addition, two aliphatic carboxylic acid salts used in the present invention include:
Preferably, those having C+z to Cn have good sustainability of activity against heat history. Examples thereof include calcium stearate and calcium monocinate. The blending ratio is 9, for example, 0 to 100 parts by weight of ultra-high molecular weight polyethylene.
.. 1 to 20 parts by weight is preferred. This salt acts as a slipperiness regulator.
上記各添加剤の配合は、超高分子量ボリコ、チレンの結
晶融点近傍(約140℃)で加熱含浸さゼることにより
行うことが望ましい。これは、超高分子量ポリエチレン
の結晶間の隙間が、結晶融点近傍で最も多くなり、この
状態のときに最もよく添加剤が超高分子量ポリエチレン
に入るためである。It is desirable that the above-mentioned additives be blended by heating and impregnating the ultra-high molecular weight polycarbonate at a temperature close to the crystal melting point of tyrene (approximately 140° C.). This is because the gaps between the crystals of ultra-high molecular weight polyethylene are greatest near the crystal melting point, and it is in this state that the additive most often enters the ultra-high molecular weight polyethylene.
本発明超高分子量ポリエチレン組成物は、粘度低下剤と
して、芳香環化合物、芳香環化合物誘導体、及びそれら
のハロゲン化合物の群よりなる化合物のうち少なくとも
1種類を用いているため。The ultra-high molecular weight polyethylene composition of the present invention uses at least one compound selected from the group consisting of aromatic ring compounds, aromatic ring compound derivatives, and their halogen compounds as a viscosity reducing agent.
溶融粘度が従来の組成物に比べ大幅に低下している。従
って、超高分子量ポリエチレンの粒子合着性が格段に向
上し流れ性が良いため、押出成形が可能となり生産速度
を向上することができ−る。また、上記粘度低下剤と共
に滑性調整剤として脂肪族のC12〜C3λカルボン酸
塩を用いているため。The melt viscosity is significantly lower than that of conventional compositions. Therefore, since the particle cohesiveness of ultra-high molecular weight polyethylene is significantly improved and its flowability is good, extrusion molding becomes possible and production speed can be improved. In addition, an aliphatic C12-C3λ carboxylic acid salt is used as a lubricity modifier together with the viscosity reducing agent.
臨界剪断速度が大幅に向上し、押出成形安定性に優れて
いるうえ、薄物、異形物を問わず種々の形状の成形品を
成形物の本来の物性を損なうことなく押出成形すること
ができる。The critical shear rate is greatly improved, the extrusion molding stability is excellent, and molded products of various shapes, whether thin or irregularly shaped, can be extruded without impairing the original physical properties of the molded product.
次に本発明の実施例を示す。Next, examples of the present invention will be shown.
〔実施例1〕
分子量200万以上の超高分子量ポリエチレン100i
(i部と、シクロヘキシルヘンセフ20重量部とモンク
ン酸カルシウム2重量部とをヘンシェルミキザーで14
0℃にて攪拌コンパウンドした組成物を用いてシートの
押出を行った。[Example 1] Ultra-high molecular weight polyethylene 100i with a molecular weight of 2 million or more
(I part, 20 parts by weight of cyclohexyl hensef, and 2 parts by weight of calcium moncitate were mixed in a Henschel mixer for 14 hours.
A sheet was extruded using a composition stirred and compounded at 0°C.
押出機は9011!I−軸押出機を用い、ダイは幅が1
000mm、厚みが2111+のシートダイを用いた。The extruder is 9011! Using an I-axis extruder, the die has a width of 1
A sheet die having a diameter of 000 mm and a thickness of 2111+ was used.
成形条件及び結果を第1表に示す。尚、比較例は添加剤
を全く配合していない超高分子量ポリエチレンである。The molding conditions and results are shown in Table 1. The comparative example is ultra-high molecular weight polyethylene containing no additives.
第1表
〔実施例2〕
〔実施例1〕と同様の条件で第2表に示す配合割合の組
成物を押出した。Table 1 [Example 2] Compositions having the blending ratios shown in Table 2 were extruded under the same conditions as in [Example 1].
第2表
成形条件及び結果を第3表に示す。尚、比較例は添加剤
を全く配合していない超高分子量ポリエチレンである。Table 2 Molding conditions and results are shown in Table 3. The comparative example is ultra-high molecular weight polyethylene containing no additives.
第3表
*は現行の圧縮成形における成形品を用いた結果である
。Table 3* shows the results using molded products in the current compression molding process.
第1表から明らかなように2本発明組成物の押出成形品
と従来め圧縮成形品との間には、物性についての著しい
相違は認められない。即ち2本発明組成物は、超高分子
量ポリエチレンがもつ耐摩耗性に優れ′ζいるといった
本質的な物性を損なわないものである。また、第2表か
ら分るように耐衝撃性においても本発明組成物は優れて
いるものである。As is clear from Table 1, there is no significant difference in physical properties between the extrusion molded products of the two compositions of the present invention and the conventional compression molded products. That is, the composition of the present invention does not impair the essential physical properties of ultra-high molecular weight polyethylene, such as excellent wear resistance. Furthermore, as can be seen from Table 2, the compositions of the present invention are also excellent in impact resistance.
出願人 積水化学工業株式会社 代表者 胚沼 基利Applicant: Sekisui Chemical Co., Ltd. Representative: Mototoshi Ugenuma
Claims (1)
香環化合物、芳香環化合物誘導体、及びそれらのハロゲ
ン化合物の群よりなる化合物のうち少なくとも1種類と
脂肪族のC+l −C32カルボン酸塩とが配されてな
る超高分子量ポリエチレン組成物。1) At least one compound selected from the group consisting of aromatic ring compounds, aromatic ring compound derivatives, and their halogen compounds and an aliphatic C+l-C32 carboxylate are arranged on ultra-high molecular weight polyethylene having a molecular weight of 1 million or more. Ultra-high molecular weight polyethylene composition.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11115283A JPS601245A (en) | 1983-06-20 | 1983-06-20 | Ultra-high-molecular-weight polyethylene composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11115283A JPS601245A (en) | 1983-06-20 | 1983-06-20 | Ultra-high-molecular-weight polyethylene composition |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS601245A true JPS601245A (en) | 1985-01-07 |
Family
ID=14553775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11115283A Pending JPS601245A (en) | 1983-06-20 | 1983-06-20 | Ultra-high-molecular-weight polyethylene composition |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS601245A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6279126A (en) * | 1985-09-30 | 1987-04-11 | Nitto Seiko Co Ltd | Unaligned parts rejecting device in parts feeder |
JPH01281211A (en) * | 1987-10-26 | 1989-11-13 | Nitto Seiko Co Ltd | Excluding device for not-arranged parts in part feeding device |
EP0549268A2 (en) * | 1991-12-17 | 1993-06-30 | Mitsubishi Gas Chemical Company, Inc. | Resin composition of polyphenylene ether and polyamide |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59232123A (en) * | 1983-06-16 | 1984-12-26 | Agency Of Ind Science & Technol | Production of solution of super-molecular weight polyethylene |
-
1983
- 1983-06-20 JP JP11115283A patent/JPS601245A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59232123A (en) * | 1983-06-16 | 1984-12-26 | Agency Of Ind Science & Technol | Production of solution of super-molecular weight polyethylene |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6279126A (en) * | 1985-09-30 | 1987-04-11 | Nitto Seiko Co Ltd | Unaligned parts rejecting device in parts feeder |
JPH01281211A (en) * | 1987-10-26 | 1989-11-13 | Nitto Seiko Co Ltd | Excluding device for not-arranged parts in part feeding device |
JPH0567540B2 (en) * | 1987-10-26 | 1993-09-27 | Nitto Seiko Kk | |
EP0549268A2 (en) * | 1991-12-17 | 1993-06-30 | Mitsubishi Gas Chemical Company, Inc. | Resin composition of polyphenylene ether and polyamide |
US5328945A (en) * | 1991-12-17 | 1994-07-12 | Mitsubishi Gas Chemical Company, Inc. | Resin composition of polyphenylene ether and polyamide |
EP0549268A3 (en) * | 1991-12-17 | 1995-05-17 | Mitsubishi Gas Chemical Co |
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