JPH0313304A - Pelletizing method of thermoplastic resin - Google Patents
Pelletizing method of thermoplastic resinInfo
- Publication number
- JPH0313304A JPH0313304A JP1148478A JP14847889A JPH0313304A JP H0313304 A JPH0313304 A JP H0313304A JP 1148478 A JP1148478 A JP 1148478A JP 14847889 A JP14847889 A JP 14847889A JP H0313304 A JPH0313304 A JP H0313304A
- Authority
- JP
- Japan
- Prior art keywords
- thermoplastic resin
- fine powder
- bulk density
- powder
- molded product
- 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
- 238000000034 method Methods 0.000 title claims abstract description 28
- 229920005992 thermoplastic resin Polymers 0.000 title claims description 25
- 238000005453 pelletization Methods 0.000 title description 2
- 239000000843 powder Substances 0.000 claims abstract description 29
- 239000002245 particle Substances 0.000 claims abstract description 11
- 238000000748 compression moulding Methods 0.000 claims description 15
- 230000009477 glass transition Effects 0.000 claims description 13
- 238000002844 melting Methods 0.000 claims description 12
- 230000008018 melting Effects 0.000 claims description 12
- 238000005469 granulation Methods 0.000 claims description 6
- 230000003179 granulation Effects 0.000 claims description 6
- 238000004513 sizing Methods 0.000 claims description 2
- 239000008188 pellet Substances 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 8
- 238000000465 moulding Methods 0.000 abstract description 8
- 238000001746 injection moulding Methods 0.000 abstract description 6
- KEQXNNJHMWSZHK-UHFFFAOYSA-L 1,3,2,4$l^{2}-dioxathiaplumbetane 2,2-dioxide Chemical compound [Pb+2].[O-]S([O-])(=O)=O KEQXNNJHMWSZHK-UHFFFAOYSA-L 0.000 abstract 1
- 230000004927 fusion Effects 0.000 abstract 1
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 14
- 239000008187 granular material Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000004040 coloring Methods 0.000 description 5
- 239000000945 filler Substances 0.000 description 5
- 238000007906 compression Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 239000004962 Polyamide-imide Substances 0.000 description 2
- 239000004695 Polyether sulfone Substances 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 229920001643 poly(ether ketone) Polymers 0.000 description 2
- 229920002312 polyamide-imide Polymers 0.000 description 2
- 229920006393 polyether sulfone Polymers 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- CYSGHNMQYZDMIA-UHFFFAOYSA-N 1,3-Dimethyl-2-imidazolidinon Chemical compound CN1CCN(C)C1=O CYSGHNMQYZDMIA-UHFFFAOYSA-N 0.000 description 1
- OHDYZVVLNPXKDX-UHFFFAOYSA-N 2,3-dichlorobenzonitrile Chemical compound ClC1=CC=CC(C#N)=C1Cl OHDYZVVLNPXKDX-UHFFFAOYSA-N 0.000 description 1
- YMHOBZXQZVXHBM-UHFFFAOYSA-N 2,5-dimethoxy-4-bromophenethylamine Chemical compound COC1=CC(CCN)=C(OC)C=C1Br YMHOBZXQZVXHBM-UHFFFAOYSA-N 0.000 description 1
- WXNZTHHGJRFXKQ-UHFFFAOYSA-N 4-chlorophenol Chemical compound OC1=CC=C(Cl)C=C1 WXNZTHHGJRFXKQ-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 241000545067 Venus Species 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- -1 alkali metal salt Chemical class 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001002 functional polymer Polymers 0.000 description 1
- 239000012210 heat-resistant fiber Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000012643 polycondensation polymerization Methods 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/04—Making granules by dividing preformed material in the form of plates or sheets
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は熱可塑性樹脂の新規な造粒方法に関するもので
ある。さらに詳しくいえば、本発明は、ガラス転移点８
０″Ｃ以上の熱可塑性樹脂微粉末を熱劣化をもたらすこ
となく、かつ低エネルギー消費量でもって、嵩密度が高
く、ハンドリングが容易である上、着色の少ない粒子に
効率よく造粒する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a novel method for granulating thermoplastic resins. More specifically, the present invention has a glass transition point of 8
This invention relates to a method for efficiently granulating thermoplastic resin fine powder of 0"C or higher into particles that have high bulk density, are easy to handle, and have little coloring, without causing thermal deterioration and with low energy consumption. It is something.
［従来の技術１
近年、機能性高分子材料として、耐熱性及び機械特性な
どに優れたエンジニアリングプラスチック、例えばポリ
フェニレンスルフィド、ポリエーテルエーテルケトン、
ポリエーテルスルホン、ポリアミドイミド、ポリエーテ
ルケトン、ポリシアノアリールエーテルなどが注目され
、実用化されはじめている。[Prior art 1] In recent years, engineering plastics with excellent heat resistance and mechanical properties, such as polyphenylene sulfide, polyether ether ketone, etc., have been used as functional polymer materials.
Polyether sulfone, polyamideimide, polyether ketone, polycyanoaryl ether, etc. are attracting attention and are beginning to be put into practical use.
ところで、熱可塑性樹脂の成形においては、通常エクス
トルーダーなどにより大きな熱エネルギーを加えて、熱
可塑性樹脂を溶融押出してべレットを造粒し、このペレ
ットを射出成形機・や押出成形機などにより所望形状に
成形する方法が用いられている。By the way, in the molding of thermoplastic resins, a large amount of heat energy is usually applied using an extruder, etc. to melt and extrude the thermoplastic resin to form pellets, and these pellets are then molded into desired shapes using an injection molding machine or an extrusion molding machine. A method of molding it into a shape is used.
しかしながら、このようなエクストルーダーなどを用い
て造粒する方法においては、エネルギー消費量が例えば
１〜５ＫＷＨ／＆ｇと大きく、かつエクストルーダーに
供給するポリマー粉末の嵩密度が小さいと供給速度が小
さくなり；熱履歴を受けやすくなるという欠点がある。However, in the method of granulation using such an extruder, the energy consumption is large, for example, 1 to 5 KWH/&g, and the supply rate becomes low if the bulk density of the polymer powder supplied to the extruder is low. ; It has the disadvantage of being susceptible to thermal history.
特に前記エンジニアリングプラスチックのようにガラス
転移点が８０℃以上のポリマーを用いる場合、溶融押出
しに通常２５０°Ｃ以上の高温を必要とするため、その
嵩密度が小さいと熱による劣化を免れず、得られるペレ
ットに着色などをもたらし、高品質の成形品が得られに
くいという問題が生じる。In particular, when using a polymer with a glass transition point of 80°C or higher, such as the aforementioned engineering plastics, a high temperature of 250°C or higher is usually required for melt extrusion. This causes problems such as coloring of the pellets, making it difficult to obtain high-quality molded products.
〔発明が解決しようとする課題］
本発明は、このような事情のもとで、ガラス転移点が８
０°Ｃ以上の嵩密度の小さな熱可塑性樹脂微粉末を、熱
劣化をもたらすことなく、かつ低エネルギー消費量でも
って、嵩密度が高く、ノ＼ンドリングが容易である上、
着色の少ない粒子に効率よく造粒する方法を提供するこ
とを目的としてなされたものである。[Problem to be solved by the invention] Under these circumstances, the present invention solves the problem of glass transition point of 8.
Thermoplastic resin fine powder with a small bulk density of 0°C or more can be produced without thermal deterioration and with low energy consumption, has a high bulk density, and is easy to knead.
This was done for the purpose of providing a method for efficiently granulating particles with little coloring.
〔課題を解決するための手段］
本発明者らは前記目的を達成するために鋭意研究を重ね
た結果、ガラス転移点が８０℃以上の熱可塑性樹脂微粉
末を融解させることなく圧縮成形するか、又はこの圧縮
成形後、成形物を解砕するか、あるいは前記のように圧
縮成形したのち、成形物を解砕し、次いで分級若しくは
整粒することにより、その目的を達成しうろことを見い
出し、この知見に基づいて本発明を完成するに至った。[Means for Solving the Problems] As a result of extensive research to achieve the above object, the present inventors have found that it is possible to compression mold a thermoplastic resin fine powder with a glass transition point of 80° C. or higher without melting it. , or after compression molding, crush the molded product, or after compression molding as described above, crush the molded product, and then classify or size it to find out how to achieve the purpose. Based on this knowledge, the present invention was completed.
すなわち、本発明は、８０℃以上のガラス転移点を有す
る熱可塑性樹脂微粉末を融解させることなく圧縮成形す
ること、場合によりこの圧縮成形後成形物を解砕するか
又は解砕後分級若しくは整粒することを特徴とする熱可
塑性樹脂の造粒方法を提供するものである。That is, the present invention involves compression molding thermoplastic resin fine powder having a glass transition point of 80° C. or higher without melting it, and optionally crushing the molded product after compression molding, or classifying or sorting it after crushing. The present invention provides a method for granulating a thermoplastic resin, which is characterized in that it is granulated.
以下、本発明の詳細な説明する。The present invention will be explained in detail below.
本発明方法においては、ポリマーとして８０℃以上のガ
ラス転移点を有する熱可塑性“樹脂が用いられる。この
ような熱可塑性樹脂としては、例えばポリフェニレンス
ルフィド［結晶性、融点２９０°Ｃ１ガラス転移温度８
８°０、熱変形温度（１８、６ｋｇ／ｃｍ″荷重による
、以下同様）、２６０ ℃以上（ガラス繊維入り）］、
ポリエーテルエーテルケトン（結晶性、融点３３４℃、
ガラス転移点１４３°Ｃ１熱変形温度１５２°Ｃ）、ポ
リエーテルスルホン（非品性、熱変形温度１９９〜２０
３℃）、ポリアミドイミド（非品性、ガラス転移点２７
０°Ｃ以上、熱変形温度２７４℃）、ポリエーテルケト
ン（結晶性又は非晶性、融点３４０℃）、ポリシアノア
リールエーテル（結晶性又は非品性、融点３４０°Ｃ、
ガラス転移点１４５℃、熱変形温度１６５°Ｃ）などが
挙げられるが、これらの熱可塑性樹脂の中で重縮合系の
ものが好ましく、特にポリシアノアリールエーテルにつ
いて有効である。In the method of the present invention, a thermoplastic resin having a glass transition point of 80°C or higher is used as the polymer. Examples of such thermoplastic resin include polyphenylene sulfide [crystalline, melting point 290°C, glass transition temperature 8
8°0, heat deformation temperature (18.6kg/cm'' load, the same applies hereinafter), 260°C or higher (with glass fiber)],
Polyetheretherketone (crystalline, melting point 334℃,
Glass transition point: 143°C, heat distortion temperature: 152°C), polyether sulfone (non-quality, heat distortion temperature: 199-20°C)
3℃), polyamideimide (non-quality, glass transition point 27
0°C or higher, heat distortion temperature 274°C), polyether ketone (crystalline or amorphous, melting point 340°C), polycyanoaryl ether (crystalline or non-crystalline, melting point 340°C,
Among these thermoplastic resins, polycondensation type resins are preferred, and are particularly effective for polycyanoaryl ether.
本発明方法においては、これらの熱可塑性樹脂は微粉末
状で用いられるが、この微粉末としては、平均粒径が１
０〜１００μｍで、嵩密度が０．２ｇ／ｃｍ３以下のも
のが有利に適用できる。また、前記熱可塑性樹脂の製造
方法については特に制限はなく、従来公知の方法で製造
されたものを使用することができる。In the method of the present invention, these thermoplastic resins are used in the form of fine powder, and this fine powder has an average particle size of 1
Those having a diameter of 0 to 100 μm and a bulk density of 0.2 g/cm 3 or less can be advantageously applied. Furthermore, there are no particular limitations on the method for producing the thermoplastic resin, and those produced by conventionally known methods can be used.
例えば、本発明において好適に用いられるポリシアノア
リールエーテルは、Ｎ−メチルピロリドンやジメチルイ
ミダゾリジノンなどの溶媒中において、ジハロゲノベン
ゾニトリルとレゾルシノールとアルカリ金属塩とを、好
ましくは１４０〜３５０°Ｃの範囲の温度で、縮重合さ
せたのち、水又はアルコールで処理するといっｔ；方法
により製造することができる（特開昭６２−２２３２２
６号公報）。このようにして得られＩ；ポリシアノアリ
ールエーテルの微粉末は、通常平均粒径が１０〜１００
μｍ程度で、嵩密度が０．１〜０．２９７ｃｍ”と小さ
い。For example, the polycyanoarylether suitably used in the present invention is prepared by mixing dihalogenobenzonitrile, resorcinol, and an alkali metal salt in a solvent such as N-methylpyrrolidone or dimethylimidazolidinone, preferably at 140 to 350°C. It can be produced by the method of condensation polymerization at a temperature in the range of , followed by treatment with water or alcohol.
Publication No. 6). The fine powder of polycyanoaryl ether obtained in this way usually has an average particle size of 10 to 100.
It has a small bulk density of 0.1 to 0.297 cm".
このような嵩密度の小さな微粉末は、容積式で粉体供給
する機器では効率が極めて悪く、またそのまま成形しよ
うとすると、成形機のスクリューにうまく巻き込まれず
、良好な成形が不可能であり、たとえ成形できたとして
も、ガス抜けが悪く、平滑な表面を有する成形品は得ら
れない。したがって、一般にエクストルーダーなどによ
り溶融押出してベレットに造粒し、成形に供しているが
、この場合通常２５０°Ｃ以上の高温を必要とし、かつ
嵩密度が小さいｔ；め供給速度が遅く、該ペレットは熱
履歴を受は着色を免れないという問題が生じる。Fine powder with such a small bulk density is extremely inefficient in volumetric powder feeding equipment, and if you try to mold it as it is, it will not be caught properly in the screw of the molding machine, making it impossible to mold it well. Even if molding is possible, gas release is poor and a molded product with a smooth surface cannot be obtained. Therefore, it is generally melt-extruded using an extruder or the like, granulated into pellets, and then used for molding. However, in this case, a high temperature of 250°C or higher is usually required, and the supply speed is slow due to the low bulk density. A problem arises in that the pellets undergo coloration due to thermal history.
本発明方法は、このような問題を解決するためになされ
たもので、前記熱可塑性樹脂微粉末を融解させることな
く圧縮成形したのち、場合によりこの成形物を解砕する
か又は解砕後分級若しくは整粒することにより、嵩密度
の高い造粒物を得ることを特徴とするものである。The method of the present invention was developed to solve such problems, and after compression molding the thermoplastic resin fine powder without melting, the molded product is optionally crushed or classified after crushing. Alternatively, it is characterized by obtaining granules with high bulk density by sizing.
本発明における圧縮成形においては、プレス圧力は、通
常１０〜２００ ｋｇ／ｃｍ”、好ましくは５０〜．
ｌ ＯＯｋｇ／ ｃｒｙ”の範囲で選ばれる。このプレ
ス圧力がｌｏｋｇ／ｃｔｓ２未満では固まらないおそれ
があるし、２００ｋｇ／ｃがを超えると圧縮成形機が重
厚になり好ましくない。一方温度は、通常常温ないし２
００°Ｃ１好ましくは常温ないし１００℃の範囲で選ば
れる。この温度が２００℃を超えると粘りが出て、ロー
ラなどに巻きつく傾向が生じ、好ましくないし、また常
温より低い温度で圧縮成形してもなんらメリットはない
。さらに圧縮成形時間については特に制限はなく、適当
な時間を選ぶことができる。In the compression molding of the present invention, the press pressure is usually 10 to 200 kg/cm", preferably 50 to 200 kg/cm".
lOOkg/cry".If the press pressure is less than 200kg/cts2, it may not solidify, and if it exceeds 200kg/c, the compression molding machine will become heavy, which is undesirable.On the other hand, the temperature is usually room temperature. or 2
00°C1 is preferably selected from room temperature to 100°C. If this temperature exceeds 200°C, it becomes sticky and tends to wrap around rollers, which is not desirable, and there is no advantage to compression molding at a temperature lower than room temperature. Further, there is no particular restriction on the compression molding time, and an appropriate time can be selected.
本発明においては、このようにして圧縮成形して得られ
た成形物を場合により解砕する処置がとられる。この際
、解砕物の平均粒径が、通常０．５〜２０ｍｍ、好まし
くは１〜１１０１ＩＩの範囲になるように解砕すること
が望ましい。この平均粒径が０ 、５ ｍｍ未満では粉
じんが発生するおそれがあるし、２０！ＩＩｌ＋を超え
るとフィラーなどとの混合が困難となり好ましくない。In the present invention, the molded product thus obtained by compression molding is optionally crushed. At this time, it is desirable to crush the crushed material so that the average particle size of the crushed material is usually in the range of 0.5 to 20 mm, preferably in the range of 1 to 1101 II. If this average particle size is less than 0.5 mm, there is a risk of dust generation; If it exceeds IIl+, it becomes difficult to mix with fillers and the like, which is not preferable.
本発明においては、該成形物を解砕後、さらに場合によ
り分級若しくは整粒処置がとられる。この際、円形の振
動篩やその他一般の篩などを用いることができる。特に
、シート状又は紐状に圧縮成形したのち、解砕後、分級
若しくは整粒することが望ましい。・該シート状の成形
物としては、厚みが０．５〜１０ｍｍ１好ましくは１．
５〜５ｍｍ程度のものが有利であり、あまり薄すぎると
処理能力が低下するし、また厚すぎると崩れやすくなり
好ましくない。さらにシートを折り曲げｔ；波板状のも
のであってもよい。In the present invention, after the molded product is crushed, it is further subjected to classification or granulation treatment depending on the case. At this time, a circular vibrating sieve or other general sieve can be used. In particular, it is desirable to compress the material into a sheet or string, crush it, and then classify or size it. - The sheet-like molded product has a thickness of 0.5 to 10 mm, preferably 1.
A thickness of about 5 to 5 mm is advantageous; if it is too thin, the processing capacity will be reduced, and if it is too thick, it will tend to crumble, which is undesirable. Furthermore, the sheet may be bent to form a corrugated sheet.
一方、紐状成形物としては、太さが０．５〜１０ｍｍ、
好ましくは１．５〜５ｍＴｎ程度のものが有利であり、
あまり細すぎると処理能力が低下するし、まｔ；太すぎ
ると崩れやすくなり好ましくない。On the other hand, as a string-like molded product, the thickness is 0.5 to 10 mm,
Preferably, about 1.5 to 5 mTn is advantageous,
If it is too thin, the processing capacity will decrease, and if it is too thick, it will tend to crumble, which is undesirable.
本発明においては、このようにして熱可塑性樹脂微粉末
を造粒する際に、所望に応じ、各種添加剤や充填材を添
加することができる。この場合、これらの添加成分は該
樹脂微粉末と共に不融解圧縮成形機に供給することが望
ましい。In the present invention, when granulating the thermoplastic resin fine powder in this manner, various additives and fillers can be added as desired. In this case, it is desirable that these additional components be supplied to the non-melting compression molding machine together with the fine resin powder.
該添加剤としては、例えばカーボンブラック、酸化チタ
ン、その他の無機着色剤、タルクなどの増核剤などが挙
げられ、充填材としては、例えばガラス繊維、炭素繊維
、ステンレスなどの細線、炭化ケイ素などのウィスカー
類や粒状体、アラミド繊維などの有機耐熱繊維などが挙
げられる。Examples of such additives include carbon black, titanium oxide, other inorganic colorants, and nucleating agents such as talc. Examples of fillers include glass fibers, carbon fibers, fine wires such as stainless steel, and silicon carbide. Examples include whiskers, granules, and organic heat-resistant fibers such as aramid fibers.
本発明方法における不融解圧縮成形方式としては、例え
ば（１）バッチ式で、シリンダー内に熱可塑性樹脂粉体
を入れ、油圧によりピストンを用いて圧縮する方式、（
２）Ｍ類製造方法のように、スクリューフィーダーでグ
イから高圧で連続的に押出す方式、（３）回転ロールに
該樹脂粉体をはさみ込んでシート状や波形状にしたのち
、これを解砕機などにより、所定の大きさにカットする
か、又は直接粒状にする方式などを用いることができる
。これらの方式の中で、前記（１）の方式は、量産性の
点から不利であるものの、確実性の点では有利であり、
また、（２）の方法は、処理能力は大きいが、圧縮力が
小さいため、バインダーを添加する必要があって、不純
物の混入を嫌うものには不適である。一方、（３）の方
式は、圧縮力が強い上、処理能力も大きく最適である。Examples of the non-melting compression molding method in the method of the present invention include (1) a batch method in which thermoplastic resin powder is placed in a cylinder and compressed using a piston under hydraulic pressure;
2) Continuous extrusion at high pressure from a goo using a screw feeder, as in the M-class production method; (3) The resin powder is sandwiched between rotating rolls to form a sheet or wave shape, and then released. It can be cut into a predetermined size using a crusher or the like, or it can be directly granulated. Among these methods, method (1) is disadvantageous in terms of mass production, but is advantageous in terms of reliability.
In addition, method (2) has a large processing capacity, but has a small compression force, so it is necessary to add a binder, and it is not suitable for those that do not want to be contaminated with impurities. On the other hand, method (3) has a strong compression force and a large processing capacity, making it optimal.
次に、本発明の実施態様の好適な１例を添付図面に従っ
て説明すると、第１図は本発明方法を実施するための装
置の１例の概略図であって、スクリユーフィーダー２を
備えたホッパー１に、所望に応じて用いられる添加剤や
充填材を含有する熱可塑性樹脂粉体を供給する。該樹脂
粉体はスクリューフィーダー２によりプレスロール３に
送うれ、シート状や紐状に圧縮成形されたのち、解砕機
４によって解砕され、この解砕物はスクリーン５によっ
て整粒されながら系外へ排出される。なお、プレスロー
ル３に凹部を設けて、解砕機を経ずに直接粒状物を得る
ことができる。Next, a preferred example of the embodiment of the present invention will be described with reference to the accompanying drawings. FIG. A thermoplastic resin powder containing additives and fillers used as desired is supplied to the hopper 1 . The resin powder is sent to a press roll 3 by a screw feeder 2, compressed into a sheet or string, and then crushed by a crusher 4, and this crushed material is sized by a screen 5 and sent out of the system. It is discharged. Note that by providing a concave portion in the press roll 3, it is possible to directly obtain granules without passing through a crusher.
このようにして得られた造粒物の嵩密度は、ＪＩＳ
Ｋ−６７２１の方法による測定で、通常０．３〜０ 、
７ ｇ／ ｃｍ’の範囲にあることが望ましい。The bulk density of the granules obtained in this way is determined by JIS
Measured by the method of K-6721, usually 0.3 to 0,
It is desirable that it be in the range of 7 g/cm'.
この高密度が０．３ｇ／ｃｒ１３未満では崩れやすいし
、０．７９／Ｃ２″を超えると圧縮に要する動力が大き
くなり好ましくない。また、該造粒物の平均粒径は０．
５〜２０ｍ５＋１好ましくは１〜１０肩層の範囲にある
ことが望ましい。この粒径が０ 、５ ｓｒｓ未満では
粉じんが発生しやすいし、２０ｍ肩を超えるとフィラー
などとの混合が困難となり好ましくない。If this high density is less than 0.3 g/cr13, it will easily collapse, and if it exceeds 0.79/c2'', the power required for compression will be large, which is undesirable.
It is desirable to be in the range of 5 to 20 m5+1, preferably 1 to 10 shoulder layers. If the particle size is less than 0.5 srs, dust is likely to be generated, and if it exceeds 20 m, it becomes difficult to mix with fillers, etc., which is not preferable.
前記造粒物は、射出成形や押出成形など従来慣用されて
いる成形法により、着色の少ない品質の良好な成形品を
与えることができる。The granules can be molded into good quality molded products with little coloration by conventionally used molding methods such as injection molding and extrusion molding.
［実施例］
次に、実施例により本発明をさらに詳細に説明するが、
本発明はこれらの例によってなんら限定されるものでは
ない。[Example] Next, the present invention will be explained in more detail with reference to Examples.
The present invention is not limited in any way by these examples.
製造例１
２００１のステンレス製重合槽に、レゾルシノール６０
ｍａｌｌ、ジクロロベンゾニトリル６０ｍｏａ。Production Example 1 Resorcinol 60 was added to a 2001 stainless steel polymerization tank.
mall, dichlorobenzonitrile 60 moa.
炭酸ナトリウム６６ｍｏ！及びＮ−メチルピロリドン７
０１１を仕込み、重合させた。次いで、精製後、直空乾
燥してポリシアノアリールエーテルのパウダーを得た。Sodium carbonate 66mo! and N-methylpyrrolidone 7
011 was charged and polymerized. After purification, the product was then dried in direct air to obtain a polycyanoaryl ether powder.
得られた重合体のｐ−クロロフェノールを溶媒とする０
、２９７ｄａ濃度の溶液の６０℃における還元粘度［ｙ
−＊／ ｃ ］ は１．０５ ｄｉ／９であった。ま
た、このものの粉体物性は、疎嵩密度０．１５９ｇ／ｃ
ｒｓ”、固め嵩密度０ 、２０４２７ｃｍ３、平均嵩密
度０．１８２ｙ／Ｃｍ”、動的嵩密度０．１６９９／Ｃ
Ｐ、安息角４５度であつｔ；。The obtained polymer was prepared using p-chlorophenol as a solvent.
, reduced viscosity [y
-*/c] was 1.05 di/9. In addition, the powder physical properties of this material are that the loose bulk density is 0.159 g/c
rs", solidified bulk density 0, 20427cm3, average bulk density 0.182y/Cm", dynamic bulk density 0.1699/C
P, the angle of repose is 45 degrees and t;.
実施例１
製造例１で得たポリシアノアリールエーテルのパウダー
を、火爆鉄工（株）製、Ｃ−１０１１（ロール径２５０
ＩＩＩｒｍ、ロール巾５０ｍｍ５ ロール種フラット
タイプ）を用いて、シート状に成形したのち、このシー
トを同社製、ハンマーミル（スクリーン口開き１０ｍｍ
ｄ）で解砕し、造粒物を得ｔ；。Example 1 The polycyanoaryl ether powder obtained in Production Example 1 was prepared using C-1011 (roll diameter 250
IIIrm, roll width 50 mm 5 roll type flat type), this sheet is formed into a sheet shape, and then this sheet is processed by the company's hammer mill (screen opening 10 mm).
d) to obtain a granulated product.
第１表に造粒条件と能力、造粒物性状を示す。Table 1 shows the granulation conditions, capacity, and properties of the granules.
（以下余白）
前把造粒物を東芝機械（株）製ＩＰ−４ＳＰを用いて、
シリンダー温度３５０℃、金星温度２００℃で射出成形
したところ、乳白色の成形体が得られｔ；。(Left below) The pre-compacted granules were prepared using IP-4SP manufactured by Toshiba Machine Co., Ltd.
When injection molding was carried out at a cylinder temperature of 350°C and a Venus temperature of 200°C, a milky white molded product was obtained.
比較例１
製造例１で得たポリシアノアリールエーテルのパウダー
を、池貝製作所製只軸押出機ＰＣＭ−３０で溶融押出し
てペレットを作成したのち、実施例１と同様にして東芝
ｌ１ｌｌ！械（株）製射出成形機Ｉ Ｐ−４ＳＰを用い
、射出成形を行つたところ、成形体は茶褐色を呈してい
た。また、ペレタイズに要したエネルギーは２．３ＫＷ
Ｈ／＆ｇであった。Comparative Example 1 The polycyanoaryl ether powder obtained in Production Example 1 was melt-extruded using a single-screw extruder PCM-30 manufactured by Ikegai Seisakusho to create pellets, and the pellets were then processed in the same manner as in Example 1 to produce Toshiba l1ll! When injection molding was performed using an injection molding machine IP-4SP manufactured by Machinery Co., Ltd., the molded product had a brownish color. Also, the energy required for pelletizing was 2.3KW.
It was H/&g.
［発明の効果］
本発明によると、ガラス転移点８０°Ｃ以上の熱可塑性
樹脂微粉末を、熱劣化をもたらすことな（、かつ低エネ
ルギー消費量でもって、嵩密度が高く、ハンドリングが
容易である上、着色の少ない粒子に効率よく造粒するこ
とができる。この造粒物は、着色の少ない品質の良好な
成形品を与えることができ、例えば電子・電気製品や自
動車などの部品の成形材料として好適に用いられる。[Effects of the Invention] According to the present invention, thermoplastic resin fine powder with a glass transition point of 80°C or higher can be produced without causing thermal deterioration (and with low energy consumption, high bulk density, and easy handling). Moreover, it is possible to efficiently granulate particles with less coloring.This granulated product can give molded products of good quality with less coloring, for example, molding parts of electronic/electrical products and automobiles. Suitable for use as a material.
第１図は本発明方法を実施するための装置の１例の概略
図であって、図中符号１はホッパー ２はスクリューフ
ィーダー ３はプレスロール、４は解砕機、５はスクリ
ーンである。FIG. 1 is a schematic diagram of an example of an apparatus for carrying out the method of the present invention, in which reference numeral 1 is a hopper, 2 is a screw feeder, 3 is a press roll, 4 is a crusher, and 5 is a screen.
Claims (1)
粉末を融解させることなく圧縮成形することを特徴とす
る熱可塑性樹脂の造粒方法。 ２ ８０℃以上のガラス転移点を有する熱可塑性樹脂微
粉末を融解させることなく圧縮成形したのち、この成形
物を解砕することを特徴とする熱可塑性樹脂の造粒方法
。 ３ ８０℃以上のガラス転移点を有する熱可塑性樹脂微
粉末を融解させることなく圧縮成形したのち、この成形
物を解砕し、次いで分級若しくは整粒することを特徴と
する熱可塑性樹脂の造粒方法。 ４ 成形物がシート状又は紐状のものである請求項３記
載の造粒方法。 ５ 微粉末が平均粒径１０〜２００μｍ、嵩密度０．２
ｇ／ｃｍ＾３以下のものである請求項１、２、３又は４
記載の造粒方法。[Claims] 1. A method for granulating a thermoplastic resin, which comprises compression molding a fine thermoplastic resin powder having a glass transition point of 80° C. or higher without melting it. 2. A method for granulating a thermoplastic resin, which comprises compression molding a thermoplastic resin fine powder having a glass transition point of 80° C. or higher without melting it, and then crushing the molded product. 3. Granulation of a thermoplastic resin, characterized by compression molding a thermoplastic resin fine powder having a glass transition point of 80° C. or higher without melting, crushing the molded product, and then classifying or sizing the molded product. Method. 4. The granulation method according to claim 3, wherein the molded product is sheet-like or string-like. 5 Fine powder has an average particle size of 10 to 200 μm and a bulk density of 0.2
Claim 1, 2, 3 or 4, wherein the amount is less than g/cm^3.
Granulation method as described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1148478A JPH0313304A (en) | 1989-06-13 | 1989-06-13 | Pelletizing method of thermoplastic resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1148478A JPH0313304A (en) | 1989-06-13 | 1989-06-13 | Pelletizing method of thermoplastic resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0313304A true JPH0313304A (en) | 1991-01-22 |
Family
ID=15453655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1148478A Pending JPH0313304A (en) | 1989-06-13 | 1989-06-13 | Pelletizing method of thermoplastic resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0313304A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1120436A1 (en) * | 1999-05-24 | 2001-08-01 | Hosokawa Micron Corporation | Method for forming granule of thermoplastic resin |
| EP1215234A1 (en) * | 2000-12-12 | 2002-06-19 | SàD-West-Chemie Gmbh | Process for the preparation of curable molding compositions for use in commutators and slip ring bodies |
| WO2002070220A1 (en) * | 2001-03-06 | 2002-09-12 | Idemitsu Petrochemical Co., Ltd. | Process for producing granular styrene resin and molded article |
| WO2002094529A1 (en) * | 2001-05-24 | 2002-11-28 | Toray Industries, Inc. | Tablet, process for producing the same, and molded article obtained therefrom |
| JP2003041128A (en) * | 2001-05-24 | 2003-02-13 | Toray Ind Inc | Tablet type resin composition, method for producing the same and molded product obtained from the same |
| JP2014117919A (en) * | 2012-12-19 | 2014-06-30 | Nippon Zeon Co Ltd | Resin composition and utilization of the same |
| JPWO2015060242A1 (en) * | 2013-10-24 | 2017-03-09 | 日本ゼオン株式会社 | Fiber comprising alicyclic structure-containing polymer and method for producing the same |
-
1989
- 1989-06-13 JP JP1148478A patent/JPH0313304A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1120436A1 (en) * | 1999-05-24 | 2001-08-01 | Hosokawa Micron Corporation | Method for forming granule of thermoplastic resin |
| EP1120436A4 (en) * | 1999-05-24 | 2003-02-19 | Hosokawa Micron Kk | Method for forming granule of thermoplastic resin |
| EP1215234A1 (en) * | 2000-12-12 | 2002-06-19 | SàD-West-Chemie Gmbh | Process for the preparation of curable molding compositions for use in commutators and slip ring bodies |
| WO2002070220A1 (en) * | 2001-03-06 | 2002-09-12 | Idemitsu Petrochemical Co., Ltd. | Process for producing granular styrene resin and molded article |
| JPWO2002070220A1 (en) * | 2001-03-06 | 2004-07-02 | 出光石油化学株式会社 | Method for producing styrene resin particles and molded article |
| WO2002094529A1 (en) * | 2001-05-24 | 2002-11-28 | Toray Industries, Inc. | Tablet, process for producing the same, and molded article obtained therefrom |
| JP2003041128A (en) * | 2001-05-24 | 2003-02-13 | Toray Ind Inc | Tablet type resin composition, method for producing the same and molded product obtained from the same |
| US7514144B2 (en) | 2001-05-24 | 2009-04-07 | Toray Industries, Inc. | Tablet, process for producing the same, and molded article obtained therefrom |
| JP2014117919A (en) * | 2012-12-19 | 2014-06-30 | Nippon Zeon Co Ltd | Resin composition and utilization of the same |
| JPWO2015060242A1 (en) * | 2013-10-24 | 2017-03-09 | 日本ゼオン株式会社 | Fiber comprising alicyclic structure-containing polymer and method for producing the same |
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