JPH02263849A - Polyolefin molded product - Google Patents
Polyolefin molded productInfo
- Publication number
- JPH02263849A JPH02263849A JP1085076A JP8507689A JPH02263849A JP H02263849 A JPH02263849 A JP H02263849A JP 1085076 A JP1085076 A JP 1085076A JP 8507689 A JP8507689 A JP 8507689A JP H02263849 A JPH02263849 A JP H02263849A
- Authority
- JP
- Japan
- Prior art keywords
- polyolefin
- liquid crystal
- molded product
- component
- molded
- 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
- 229920000098 polyolefin Polymers 0.000 title claims abstract description 28
- 229920000642 polymer Polymers 0.000 claims abstract description 7
- 230000001747 exhibiting effect Effects 0.000 claims abstract description 5
- 229920000106 Liquid crystal polymer Polymers 0.000 abstract description 19
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 abstract description 19
- 229920001577 copolymer Polymers 0.000 abstract description 10
- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 abstract description 6
- -1 polyethylene terephthalate Polymers 0.000 abstract description 5
- 206010061592 cardiac fibrillation Diseases 0.000 abstract description 3
- 230000002600 fibrillogenic effect Effects 0.000 abstract description 3
- 229920001230 polyarylate Polymers 0.000 abstract description 2
- 229940090248 4-hydroxybenzoic acid Drugs 0.000 abstract 2
- KAUQJMHLAFIZDU-UHFFFAOYSA-N 6-Hydroxy-2-naphthoic acid Chemical compound C1=C(O)C=CC2=CC(C(=O)O)=CC=C21 KAUQJMHLAFIZDU-UHFFFAOYSA-N 0.000 abstract 1
- 229920000139 polyethylene terephthalate Polymers 0.000 abstract 1
- 239000005020 polyethylene terephthalate Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 6
- 125000003118 aryl group Chemical group 0.000 description 5
- 239000002253 acid Substances 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000012784 inorganic fiber Substances 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 229920000515 polycarbonate Polymers 0.000 description 3
- 239000004417 polycarbonate Substances 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 229920003232 aliphatic polyester Polymers 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 150000003949 imides Chemical class 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000011256 inorganic filler Substances 0.000 description 2
- 229910003475 inorganic filler Inorganic materials 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920000343 polyazomethine Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- XKZQKPRCPNGNFR-UHFFFAOYSA-N 2-(3-hydroxyphenyl)phenol Chemical compound OC1=CC=CC(C=2C(=CC=CC=2)O)=C1 XKZQKPRCPNGNFR-UHFFFAOYSA-N 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 241000276457 Gadidae Species 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000000113 differential scanning calorimetry Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001179 medium density polyethylene Polymers 0.000 description 1
- 239000004701 medium-density polyethylene Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002959 polymer blend Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は熱膨張率が小さく、機械的物性及び成形加工性
の優れたポリオレフィン成形体に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a polyolefin molded article having a small coefficient of thermal expansion and excellent mechanical properties and moldability.
ポリオレフィンは耐水性、耐薬品性、耐衝撃性、耐摩耗
性、電気絶縁性、溶融ｔｌＬ＃性、熱安定性等に優れ、
剛性や耐ストレスククック性のパクンスもよく、日用品
、フィルム、コンテナ、容器、電気機器部品等あらゆる
分野で広く使用されている。Polyolefin has excellent water resistance, chemical resistance, impact resistance, abrasion resistance, electrical insulation, melting TIL# property, thermal stability, etc.
It has good rigidity and stress resistance, and is widely used in various fields such as daily necessities, films, containers, containers, and electrical equipment parts.
しかし、ポリオレフィンは線膨張係数が大きく、温度変
化の激しい条件下や高温領域で使用すると熱変形するこ
とがあり、又力学物性も低下するので、パイプのような
長尺の成形体−ζ応用するのは困麹であった。However, polyolefin has a large coefficient of linear expansion and may be thermally deformed when used under conditions of rapid temperature changes or in high-temperature areas, and its mechanical properties also deteriorate, so it is not suitable for long molded objects such as pipes. It was a hard koji.
上記欠点を改良する方法としては、無機繊維。Inorganic fibers are a method to improve the above drawbacks.
無機充填剤等を添加することが考えられるが、ポリオレ
フィンと無機繊維や無機充填剤との接着性が悪く、押出
機等で溶融混練すると無機繊維が破断されてしまい成形
体の線膨張係数や力学物性があまり改良されない。又、
ポリオレフィンと金属やＦＲＰを積層することも考えら
れるが、ポリオレフィンと金属やＦＲＰとの接着は困麹
であり、積層体は重い、加工性の自由度が小さい１層間
剥離がすぐに発生するという欠点があった。It is possible to add inorganic fillers, etc., but the adhesion between polyolefin and inorganic fibers and inorganic fillers is poor, and when melt-kneaded using an extruder, the inorganic fibers are broken and the linear expansion coefficient and mechanics of the molded product are affected. Physical properties are not improved much. or,
Laminating polyolefin and metal or FRP can be considered, but adhesion between polyolefin and metal or FRP is difficult, the laminate is heavy, and there is little flexibility in workability, and delamination between layers occurs quickly. was there.
本発明の目的は、上記欠点に龜み、線膨張率が低減され
、機械的物性の優れたポリオレフィン成形体を提供する
ことにある。An object of the present invention is to overcome the above-mentioned drawbacks and provide a polyolefin molded article with a reduced coefficient of linear expansion and excellent mechanical properties.
本発明で使用されるポリオレフィンは、エチレン系炭化
水素のポリマーであって、たとえば高密度ポリエチレン
、中密度ポリエチレン、低密度ポリエチレン、線状低密
度ポリエチレン、ポリフロピレン、エチレン−プロピレ
ン共重合体等があげられ、その重量平均分子量は１万〜
５０万が好ましい。The polyolefin used in the present invention is an ethylene hydrocarbon polymer, such as high-density polyethylene, medium-density polyethylene, low-density polyethylene, linear low-density polyethylene, polypropylene, ethylene-propylene copolymer, etc. , its weight average molecular weight is 10,000~
500,000 is preferable.
本発明で使用される異方性溶融形態を示す重合体（以下
、液晶ポリマーと略す）としては、芳香族−脂肪族ポリ
エステル、完全芳香族ポリエステル、芳香族ポリアゾメ
チン、ポリイミドエステルなどが挙げられ、これらのう
ち異方性溶融形態を示す化合物が選択される。芳査族−
脂肪族ポリエステルとしては、例えばポリエチレンテレ
ツタレートとノ曵うヒドロキシ安息香酸との共重合体が
ある。完全芳香族ポリエステルとしては、例えば／（、
ラヒドロキシ安息香酸と６−ヒドロキシ−２−す７トエ
酸との共重合体基または／屹フヒドロキシ安息香峻、テ
レフタル酸および６−ヒドロキシ−２−す７トールの共
重合体がある。芳香族ポリアゾメチンとしては、例えば
ポリにトリロー２−メチル−１，４−７二二レン二トロ
エチリテンー１．４−７二二レンエチリデン）がある。Examples of the polymer exhibiting an anisotropic melt morphology (hereinafter abbreviated as liquid crystal polymer) used in the present invention include aromatic-aliphatic polyester, fully aromatic polyester, aromatic polyazomethine, polyimide ester, etc. Among these, compounds exhibiting an anisotropic melt morphology are selected. aromatic family
Examples of aliphatic polyesters include copolymers of polyethylene terestalate and hydroxybenzoic acid. Examples of fully aromatic polyesters include /(,
There are copolymers of hydroxybenzoic acid and 6-hydroxy-2-7toic acid, or copolymers of terephthalic acid and 6-hydroxy-2-7tolic acid. Examples of the aromatic polyazomethine include poly(trilo-2-methyl-1,4-72-2-2-2-2-2-2-2-2-2-2-methyl-1,4-7-2-2-2-2-2-2-ethylidene).
ポリイミドエステルとしては、例えば２．６−す７クリ
ンジカルボン酸、テレ７゛タル酸および４（４′−ヒド
ロキシックルイミド）フェノールの共重合体、またはジ
フェノールと４−（４’−ヒドロキシックルイミド）安
息香酸との共重合体がある。Examples of the polyimide ester include a copolymer of 2,6-7-chloro dicarboxylic acid, ter-7-thalic acid and 4(4'-hydroxylic imide)phenol, or a copolymer of diphenol and 4-(4'-hydroxylic imide). ) There is a copolymer with benzoic acid.
これらの共重合体が液晶ポリマーであることを判別する
ーζは、液晶ポリマーが溶融状態で光学的異方性を示す
ことを利用するとよい。光学的異方性は、通常の偏光Ｉ
ＩＩ歓鏡を用いることによって確龜しうる。例えば、偏
光顕微鏡の加熱ステージ上１ｃ１ｍ以下の厚さに調整さ
れた試験片を置き、嵐素雰囲気下で２℃／ｓａの昇温速
度で加熱してゆく。この状態で偏光顕微鏡の偏光子を厘
交させ、４０倍または１００倍の倍率で観察することに
より容易に確認することができる。このような方法では
、これら共重合体が液晶相に転移する温度も同時に測定
し得る。この転移温度は示差走査熱量測定（ＤＳＣ）に
よっても測定可能である。To determine whether these copolymers are liquid crystal polymers, the fact that liquid crystal polymers exhibit optical anisotropy in a molten state may be used. Optical anisotropy is normal polarization I
It can be confirmed by using II Kankyo. For example, a test piece adjusted to a thickness of 1 cm or less is placed on a heating stage of a polarizing microscope, and heated at a temperature increase rate of 2° C./sa in an atmosphere of atomized light. This can be easily confirmed by crossing the polarizers of a polarizing microscope in this state and observing at 40x or 100x magnification. In such a method, the temperature at which these copolymers transition to a liquid crystal phase can also be measured at the same time. This transition temperature can also be measured by differential scanning calorimetry (DSC).
上記液晶ポリマーとじては、ポリオレフィンの溶融温度
から該ポリオレフィンの熱分解温度までの輻度範曲で異
方性溶融形態を示す重合体が好適に使用される。なぜな
ら、本発明の成形法が用いられるためである。このよう
な方法において、成形体を構成するポリオレフィンと液
晶ポリマーとのうちのいずれか一方がｍｍ状態に達して
いない場合、あるいは一方が熱分解を起こすような場合
には、得られた成形体の物理的特性が低下するため好ま
しくない。一般１ｃ。As the liquid crystal polymer, a polymer exhibiting an anisotropic melt morphology in a gradient range from the melting temperature of the polyolefin to the thermal decomposition temperature of the polyolefin is preferably used. This is because the molding method of the present invention is used. In such a method, if either the polyolefin or the liquid crystal polymer constituting the molded product has not reached the mm state, or if one of them causes thermal decomposition, the resulting molded product may be damaged. This is not preferred because the physical properties deteriorate. General 1c.
ポリオレフィンの好ましい成形温度は１５０〜３２０℃
とされているので、このような湿度範囲内で成形可能な
液晶ポリマーを選ぶことが好ましい。The preferred molding temperature for polyolefin is 150-320°C
Therefore, it is preferable to select a liquid crystal polymer that can be molded within this humidity range.
本発明の成形体は上記ポリオレフィン６０〜の線膨張率
を低減させる効果が低下し、多くなると線膨張率は一定
となり、液６ポリマーのフィグリルを微細化Ｌ ｓｔ
＜ くなるので液晶ポリマーの含有量は５〜３０重量％
が好ましい。The molded article of the present invention is less effective in reducing the coefficient of linear expansion of the polyolefins 60 to 60, and as the coefficient increases, the coefficient of linear expansion becomes constant, and the fibril of the liquid 6 polymer is refined L st
＜ Therefore, the content of liquid crystal polymer is 5 to 30% by weight.
is preferred.
又、液晶ポリマーは平均直径２０μｍ以下であって、（
長さ／ｌ［径）の平均値が１０以上であるフィグリル形
態をとってポリオレフィン中に均一に分敵されている。In addition, the liquid crystal polymer has an average diameter of 20 μm or less, and (
It takes the form of a figurine with an average value of length/l [diameter] of 10 or more and is uniformly divided into polyolefins.
成形物の熱＊＊率を低下させるためにはフィグリルの直
径は細り、（長さ／ｉ！径）の平均値は大きいほど好ま
しいので平均直径は２０μｍ以下％（長さ／ＩＩ径）の
平均値は１０以上１ζ限定されるのであり、（＊さ／Ｉ
Ｎ径）の平均値は１００以上が好ましい。又、フィグリ
ルは均一に分散されていればよいが、−軸配向している
とその方向への線＊＊亭はより小さく、機械的物性は一
層向上したものとなる。In order to reduce the heat rate of the molded product, the diameter of the figurine should be thinner, and the larger the average value of (length/i!diameter), the better, so the average diameter should be 20 μm or less% (length/II diameter). The value is limited to 1ζ or more, and (*sa/I
The average value of N diameter) is preferably 100 or more. Moreover, although it is sufficient that the figurines are uniformly dispersed, if they are oriented along the -axis, the lines in that direction will be smaller and the mechanical properties will be further improved.
本発明の成形体は一般的に溶融成形によって製造される
。このような製造方法としてはポリオレフィンと液晶ポ
リイーのポリマーブレンドの溶融物を成形する任意の成
形方法があげられる。たとえばポリオレフィンと液晶ポ
リマーを溶融・混練し、引き続いて押出成形、グロー成
形、射出成形、カレンダー成形などにより成形される。The molded article of the present invention is generally produced by melt molding. Such a manufacturing method includes any method of molding a melt of a polymer blend of polyolefin and liquid crystal polyethylene. For example, a polyolefin and a liquid crystal polymer are melted and kneaded, and then molded by extrusion molding, glow molding, injection molding, calender molding, or the like.
あるいは上記混線物をベレットや粉末状とした後、これ
らを用いて、上Ｕ！、成形加工が行われる。Alternatively, after making the above-mentioned mixed material into a pellet or powder form, use these to create the upper U! , the molding process is performed.
このような成形時において、液晶ポリマーは、溶融状態
で伸長流動や剪断流動を受けることにより容易にフィグ
リル形態を形成し１しかも実質的にその長袖が互いに平
行に配列する場合が多い。このようなフィグリルの配向
は、成形体の線膨張率を低減させるのに効果的である。During such molding, the liquid crystal polymer easily forms a figurine shape by being subjected to elongation flow or shear flow in a molten state, and its long sleeves are often arranged substantially parallel to each other. Such fibril orientation is effective in reducing the coefficient of linear expansion of the molded article.
従って、液晶ポリマーのフィグリル化を促進させ、フィ
グリルの配向度を高める手段を用いることが有用である
。例えば、押出し成形では、成形機にスタティックミル
を直列−ζ配置すること、および比較的長さ／直径比の
大きい成形ダイスを使用することが効果的である。これ
は、押出し機中で充分に分散した組成物がスタティック
ミル内を通過する際憂ζ、液晶状態にある液晶ポリマー
に対して効率的Ｉ【伸長流動や剪断流動を付加させるた
めである。同じ理由で押出し機のヘッド部分に比較的小
径の通路を有するグレーカーを設けたり、目開き径ｌ■
以下のメツシュを設けてもよい。また、成形体が冷却固
化するまでに１軸または２軸方向に延伸させると、液晶
ポリマーのフィグリル化が著しくなるため、極めて有効
である。射出成形においては、金型内での樹脂の剪断速
度を大きくすること（例えば、射出速度を上げること、
金型内クリアランポリオレフィン中に液晶ポリマーの長
繊維が均一に分１１ｋしているため、ポリオレフィンの
みからなる成形体と比較して小さい線膨張率を示す。Therefore, it is useful to use a means for promoting fibrillation of the liquid crystal polymer and increasing the degree of orientation of the fibrils. For example, in extrusion molding, it is effective to arrange a static mill in series-ζ in a molding machine and to use a molding die with a relatively large length/diameter ratio. This is because when the composition sufficiently dispersed in the extruder passes through the static mill, efficient extensional flow or shear flow is applied to the liquid crystal polymer in the liquid crystal state. For the same reason, a gray car with a relatively small diameter passage is installed in the head of the extruder, and a gray car with a hole opening diameter of l
The following mesh may be provided. Furthermore, stretching in one or two axes until the molded body is cooled and solidified is extremely effective because fibrillation of the liquid crystal polymer becomes significant. In injection molding, increasing the shear rate of the resin within the mold (e.g. increasing the injection speed,
Since the long fibers of the liquid crystal polymer are uniformly distributed in the clear run polyolefin in the mold, it exhibits a smaller coefficient of linear expansion than a molded product made only of polyolefin.
しかも、該成形体は改善された機械的特性を有する。な
ぜなら、液晶ポリマーは、その長繊維がポリイー分子の
最も高い配向状態にあるため、より大きい弾性率とより
小さい線膨張率とを併せ持ち、液晶ポリマーを含有する
成形体の線膨張率を低減するのに特に効果的であると考
えられるからである。Moreover, the molded bodies have improved mechanical properties. This is because liquid crystal polymers have long fibers in the highest orientation state of polyE molecules, so they have both a higher elastic modulus and a lower coefficient of linear expansion, which reduces the coefficient of linear expansion of molded bodies containing liquid crystal polymers. This is because it is considered to be particularly effective.
尚、本発明の成形体にはポリオレフィンの成形体を製造
する際に一般に添加されている熱安定剤、滑剤１着色剤
、充填剤、紫外線吸収剤等が添加されてもよい。In addition, heat stabilizers, lubricants, colorants, fillers, ultraviolet absorbers, etc., which are generally added when producing polyolefin molded products, may be added to the molded product of the present invention.
さらに、必要に応じてボリアリレート、ポリカーボネー
ト、及びポリアクリレートのうち一種類の４１１脂を添
加してもよい。上記ｓ４詣は、ポリオレフィンと液晶ポ
リマーの相溶性を向上させる効果を有しており、成形体
は緻密で、表面が平滑で機械的物性が向上するので、成
形体中１〜２０重量％添加されるのが好ましく、より好
ましくは３〜１０重量％である。Furthermore, if necessary, one type of 411 fat among polyarylate, polycarbonate, and polyacrylate may be added. The above s4 has the effect of improving the compatibility between polyolefin and liquid crystal polymer, and the molded product is dense and has a smooth surface, improving mechanical properties, so it is added in an amount of 1 to 20% by weight in the molded product. It is preferably 3 to 10% by weight, more preferably 3 to 10% by weight.
本発明の成形体は、シート状、棒状、フィルム状、パイ
プ状、繊維状、塊状など所望の形状に成形される。The molded article of the present invention is molded into a desired shape such as a sheet, rod, film, pipe, fiber, or block.
〔実施例〕 次に本発明の詳細な説明する。〔Example〕 Next, the present invention will be explained in detail.
実施例１〜４、比較例１，２
第１表に示した所定量の高密・度ポリエチレン（旭化成
社製サンチックＨＤ−８８７０）、ポリエステル系液晶
ポリマー（ポリプラスチックス社製、ベクトラＡ９５０
）及びポリカーボネート（帝人化成社製、）曵ンライト
Ｌ−１２２５）を充分に乾燥した後、二輪混練押出＠＋
ζ供給し、樹脂温度２９０℃で離融混線し、約３ｓｍ径
のストランドとして押出し、ベレタイデーで長さ約４鱈
に切断してベレットを得た。Examples 1 to 4, Comparative Examples 1 and 2 Predetermined amounts of high-density polyethylene (Santic HD-8870 manufactured by Asahi Kasei Corporation) and polyester liquid crystal polymer (Vectra A950 manufactured by Polyplastics Corporation) shown in Table 1 were used.
) and polycarbonate (manufactured by Teijin Kasei Co., Ltd.) and polycarbonate (manufactured by Teijin Kasei Co., Ltd.), after thoroughly drying them, two-wheel kneading extrusion@+
ζ was supplied, melted and mixed at a resin temperature of 290° C., extruded as a strand with a diameter of about 3 sm, and cut into lengths of about 4 cods using a pelletizer to obtain pellets.
得られたベレットを２５嘘単軸押出機に供給し、ロール
で引取りながらシートを押出した。The obtained pellet was fed to a 25 mm single screw extruder, and a sheet was extruded while being taken up by a roll.
押出機の加熱筒の最加熱部温度は２９０℃、成形ダイス
の温度は２６０℃、゛スクリュー回転数は４Ｏｒｐｍ、
金型口の寸法は３閤×５０１であった。又、押出機の押
出方向の延長線上と水槽をＲｆｆｉ！Ｌ、水冷した。The temperature of the hottest part of the heating cylinder of the extruder is 290°C, the temperature of the molding die is 260°C, the screw rotation speed is 4 Orpm,
The dimensions of the mold mouth were 3 loaves x 501 mm. Also, connect the extension line of the extruder in the extrusion direction and the water tank to Rffi! L, water cooled.
得られたシートの延伸比を下式で求めて第１表に示た。The stretching ratio of the obtained sheet was determined using the following formula and is shown in Table 1.
シートの破断面を電子顕微鏡（１０００倍）観察するこ
とによりフィグリルの平均直径を求め、シートを溶剤で
溶解して、フィグリルを偏光顕微鏡で観察することによ
り、フィグリルの平均長さを求め、両者から（長さ／ｉ
ｌ径）の値を計算し、得られた値を第１表に示した。The average diameter of the figurines was determined by observing the fractured surface of the sheet with an electron microscope (1000x magnification), and the average length of the figurines was determined by dissolving the sheet with a solvent and observing the figurines with a polarizing microscope. (length/i
The values obtained are shown in Table 1.
又、得られたシートの線膨張率（ＡＳＴＭＤ６９６に準
拠）、引張強度と破断伸び（ＡＳＴＭＤ６３８に準！１
６）及び曲げ弾性率（ＡＳＴＭＤ７９０）を測定し、結
果を第１表に示した。In addition, the coefficient of linear expansion (according to ASTM D696), tensile strength and elongation at break (according to ASTM D638!1) of the obtained sheet
6) and flexural modulus (ASTMD790) were measured, and the results are shown in Table 1.
（以下余白）
〔発明の効果〕
本発明のポリオレフィン成形体の構成は上述の通りであ
り、線膨張率が小さく、熱変形がおこりにクク、機械的
物性がすぐれ、表面性もすぐれている。(The following is a blank space) [Effects of the Invention] The structure of the polyolefin molded article of the present invention is as described above, and it has a small coefficient of linear expansion, resistance to thermal deformation, excellent mechanical properties, and excellent surface properties.
従って、本発明の成形体は・竜イブ、樋、窓枠、デツキ
材フィルム等の用途に好適に使用できる。Therefore, the molded article of the present invention can be suitably used for applications such as bridges, gutters, window frames, and decking films.
Claims (1)
を示す重合体４０〜３重量％からなり、該重合体が平均
直径２０μｍ以下であって、（長さ／直径）の平均値が
１０以上であるフィグリル形態をとりながらポリオレフ
ィン中に均一に分散されていることを特徴とするポリオ
レフィン成形体。1. Consisting of 60-97% by weight of polyolefin and 40-3% by weight of a polymer exhibiting an anisotropic melt morphology, the polymer has an average diameter of 20 μm or less and an average value of (length/diameter) of 10 or more 1. A polyolefin molded article characterized in that it is uniformly dispersed in a polyolefin while taking the form of a figurine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1085076A JPH02263849A (en) | 1989-04-03 | 1989-04-03 | Polyolefin molded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1085076A JPH02263849A (en) | 1989-04-03 | 1989-04-03 | Polyolefin molded product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02263849A true JPH02263849A (en) | 1990-10-26 |
Family
ID=13848530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1085076A Pending JPH02263849A (en) | 1989-04-03 | 1989-04-03 | Polyolefin molded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02263849A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04189856A (en) * | 1990-11-21 | 1992-07-08 | Polyplastics Co | Polyolefinic resin composition and molded article thereof |
| JP2002003617A (en) * | 2000-06-20 | 2002-01-09 | Taisei Kako Co Ltd | Resin molded product and manufacturing method for the same |
| JP2018135486A (en) * | 2017-02-23 | 2018-08-30 | 上野製薬株式会社 | Polyethylene resin composition |
| WO2022030581A1 (en) * | 2020-08-06 | 2022-02-10 | 住友電気工業株式会社 | Optical cable |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6436635A (en) * | 1987-07-31 | 1989-02-07 | Sekisui Chemical Co Ltd | Ultra high molecular weight polyethylene composition |
| JPH0284466A (en) * | 1988-05-02 | 1990-03-26 | Himont It Srl | Thermally non-compatible polymer composition |
-
1989
- 1989-04-03 JP JP1085076A patent/JPH02263849A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6436635A (en) * | 1987-07-31 | 1989-02-07 | Sekisui Chemical Co Ltd | Ultra high molecular weight polyethylene composition |
| JPH0284466A (en) * | 1988-05-02 | 1990-03-26 | Himont It Srl | Thermally non-compatible polymer composition |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04189856A (en) * | 1990-11-21 | 1992-07-08 | Polyplastics Co | Polyolefinic resin composition and molded article thereof |
| JP2002003617A (en) * | 2000-06-20 | 2002-01-09 | Taisei Kako Co Ltd | Resin molded product and manufacturing method for the same |
| JP2018135486A (en) * | 2017-02-23 | 2018-08-30 | 上野製薬株式会社 | Polyethylene resin composition |
| WO2022030581A1 (en) * | 2020-08-06 | 2022-02-10 | 住友電気工業株式会社 | Optical cable |
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