JPS63130646A - Production of expandable synthetic thermoplastic resin - Google Patents
Production of expandable synthetic thermoplastic resinInfo
- Publication number
- JPS63130646A JPS63130646A JP27846186A JP27846186A JPS63130646A JP S63130646 A JPS63130646 A JP S63130646A JP 27846186 A JP27846186 A JP 27846186A JP 27846186 A JP27846186 A JP 27846186A JP S63130646 A JPS63130646 A JP S63130646A
- Authority
- JP
- Japan
- Prior art keywords
- resin particles
- thermoplastic resin
- mixer
- temp
- treatment agent
- 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
- 229920005992 thermoplastic resin Polymers 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000002245 particle Substances 0.000 claims abstract description 47
- 229920005989 resin Polymers 0.000 claims abstract description 23
- 239000011347 resin Substances 0.000 claims abstract description 23
- 238000000465 moulding Methods 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 238000005187 foaming Methods 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 239000012756 surface treatment agent Substances 0.000 claims description 18
- 239000000843 powder Substances 0.000 abstract description 12
- 239000003795 chemical substances by application Substances 0.000 abstract description 9
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 abstract description 6
- 239000004604 Blowing Agent Substances 0.000 abstract description 3
- 239000001294 propane Substances 0.000 abstract description 3
- 239000001273 butane Substances 0.000 abstract description 2
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 abstract description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 abstract description 2
- 229920000193 polymethacrylate Polymers 0.000 abstract description 2
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 abstract 3
- 150000001732 carboxylic acid derivatives Chemical class 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 229920006248 expandable polystyrene Polymers 0.000 description 4
- 230000004927 fusion Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- -1 butane dichlorofluoromethane Chemical compound 0.000 description 2
- 150000001735 carboxylic acids Chemical class 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 150000008431 aliphatic amides Chemical class 0.000 description 1
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000008173 hydrogenated soybean oil Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 238000009700 powder processing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- UFTFJSFQGQCHQW-UHFFFAOYSA-N triformin Chemical compound O=COCC(OC=O)COC=O UFTFJSFQGQCHQW-UHFFFAOYSA-N 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は発泡性熱可塑性樹脂粒子の表面に表面処理剤、
特に成形サイクル促進剤を施した発泡性熱可塑性樹脂粒
子の製造方法に関する。Detailed Description of the Invention (Industrial Application Field) The present invention provides a surface treatment agent,
In particular, the present invention relates to a method for producing expandable thermoplastic resin particles treated with a molding cycle accelerator.
（従来の技術）
発泡性熱可塑性樹脂粒子は、蒸気等の加熱媒体により加
熱されて、予備発泡した予備発泡粒子とされ１次いでこ
の予備発泡粒子を所定の型窩内に充填し、続いて該粒子
を蒸気等により加熱膨張させて互に融着させることによ
り所定の熱可塑性樹脂発泡体が得られる。(Prior Art) Expandable thermoplastic resin particles are heated with a heating medium such as steam to form pre-expanded particles, and then the pre-expanded particles are filled into a predetermined mold cavity, and then A predetermined thermoplastic resin foam can be obtained by heating and expanding the particles using steam or the like and fusing them together.
そして、予備発泡粒子同志が予備発泡時に互に結合する
ことを防止するために、ステアリン酸亜鉛や脂肪族カル
ボン酸アミド等の集塊化防止剤を発泡性熱可塑性樹脂粒
子に被覆処理することは知られている。同様に、加熱成
形時、型窩内に充填された予備発泡粒子の加熱による融
着を促進するために脂肪族アミン、脂肪族アミド等の融
着促進剤を、発泡性樹脂粒子に被覆処理することも知ら
れている。更には、成形時間、特に冷却時間を短縮させ
るためにカルボン酸アミドや高級脂肪族トリグリセライ
ド等の成形サイクル促進剤を発泡性樹脂粒子の表面に被
覆すること等も知ら九でいる。In order to prevent the pre-expanded particles from bonding to each other during pre-expanding, the expandable thermoplastic resin particles are coated with an agglomeration inhibitor such as zinc stearate or aliphatic carboxylic acid amide. Are known. Similarly, during heat molding, the expandable resin particles are coated with a fusion promoter such as an aliphatic amine or an aliphatic amide in order to promote fusion due to heating of the pre-expanded particles filled in the mold cavity. It is also known that Furthermore, it is also known to coat the surface of expandable resin particles with a molding cycle accelerator such as carboxylic acid amide or higher aliphatic triglyceride in order to shorten molding time, especially cooling time.
従来、発泡性樹脂粒子に、上記の如き表面処理剤を被覆
する場合、ダブルコーン型ミキサーやナツタ−型ミキサ
ー等の比較的エネルギーの小さい混合機を使用して処理
することが行なわれている。Conventionally, when foamable resin particles are coated with a surface treatment agent such as the one described above, the treatment is carried out using a relatively low-energy mixer such as a double cone mixer or a Knutter mixer.
かかる従来法によると発泡性樹脂粒子と表面処理剤との
付着力が弱いために発泡性樹脂粒子を予備発泡工程等に
輸送ホースで退位すると、前記処理材が輸送ホースの内
壁に付着したり、或は排気口より飛散する等の薬剤粉末
剥離のトラブルを生ずる欠点があった。According to such conventional methods, the adhesion between the foamable resin particles and the surface treatment agent is weak, so when the foamable resin particles are removed by a transportation hose during a pre-foaming step, etc., the treatment material may adhere to the inner wall of the transportation hose, or Alternatively, there is a drawback that troubles such as chemical powder peeling off, such as scattering from the exhaust port, occur.
かかる従来の欠点を解消するために、低エネルギー混合
機で粉末剥離トラブルを防止するまで処理することが考
えられるが、このような方法は非常に長い処理時間を必
要とし、実用的ではない。In order to overcome these conventional drawbacks, it is conceivable to process the powder using a low-energy mixer until the problem of powder peeling is prevented, but such a method requires a very long processing time and is not practical.
また剥離防止のために高エネルギー混合機により前記処
理剤を被覆することも試みたが、高エネルギー混合機を
使用すると槽内の温度が上昇し、発泡性熱可塑性樹脂粒
子の発泡が開始してしまい、品質劣化を生ずる欠点が認
められた。We also tried coating the treatment agent with a high-energy mixer to prevent peeling, but using a high-energy mixer raised the temperature inside the tank and caused the foamable thermoplastic resin particles to start foaming. It was found that there were defects that resulted in poor quality.
（解決すべき問題点）
本発明者らは上記の粉末剥離トラブル等の欠点を生じる
ことなく、発泡性熱可塑性樹脂粒子に効果的に粉末を添
加する方法について種々検討した結果、高エネルギー混
合機により、発泡性熱可塑性樹脂粒子と粉末とを低温を
保ちながら高速で短時間混合すると前記の剥離トラブル
を回避できることを見出し本発明を完成するに至ったも
ので、本発明の目的は発泡性熱可塑性樹脂粒子に表面処
理剤を効果的に被覆処理する方法を提供するにある。(Problems to be Solved) The present inventors have conducted various studies on a method for effectively adding powder to expandable thermoplastic resin particles without causing drawbacks such as the above-mentioned powder peeling troubles, and have found that a high-energy mixer discovered that the above-mentioned peeling trouble could be avoided by mixing expandable thermoplastic resin particles and powder at high speed for a short period of time while keeping the temperature low, and the present invention was completed. An object of the present invention is to provide a method for effectively coating plastic resin particles with a surface treatment agent.
（問題点を解決するための手段）
すなわち１本発明は高エネルギー混合機に発泡性熱可塑
性樹脂粒子と表面処理剤とを所定の割合で装入し、該混
合機により上記発泡性樹脂粒子の発泡が生起する温度以
下に保ちつつ高速で攪拌混合することにより、表面に前
記表面処理剤が被覆された発泡性熱可塑性樹脂粒子の製
造方法である。(Means for Solving the Problems) That is, 1 the present invention charges expandable thermoplastic resin particles and a surface treatment agent in a predetermined ratio into a high-energy mixer, and uses the mixer to mix the expandable resin particles. This is a method for producing expandable thermoplastic resin particles whose surfaces are coated with the surface treatment agent by stirring and mixing at high speed while maintaining the temperature below the temperature at which foaming occurs.
しかして１本発明における表面処理剤とは先に述べた集
塊化防止剤、融着促進剤、成形サイクル促進剤等発泡性
熱可塑性樹脂粒子の表面上に被覆されて発泡性熱可塑性
樹脂粒子の特性を改善する処理剤を云うのであるが、特
に、表面処理剤として成形サイクル促進剤を使用した場
合にはその効果は顕著である。ところで、本発明におけ
る高エネルギー混合機とは周速２０ｍ／ｓ以上、好まし
くは３０ｍ／ｓ以上の高速度回転攪拌羽根を有する混合
機であって１例えばヘンシェルミキサー、スーパーミキ
サー等の容器固定式高速流動型混合機を指すのである。Therefore, 1. The surface treatment agent in the present invention refers to the above-mentioned agglomeration inhibitor, fusion promoter, molding cycle accelerator, etc., which is coated on the surface of the expandable thermoplastic resin particles. This refers to a treatment agent that improves the properties of the surface treatment agent, and the effect is particularly remarkable when a molding cycle accelerator is used as the surface treatment agent. By the way, the high-energy mixer in the present invention is a mixer having high-speed rotating stirring blades with a circumferential speed of 20 m/s or more, preferably 30 m/s or more, such as a container-fixed high-speed mixer such as a Henschel mixer or a super mixer. This refers to a fluidized mixer.
このような高速度回転攪拌羽根を有する混合機に発泡性
熱可塑性樹脂と表面処理剤とを装入し、高速で攪拌する
と、強力な剪断力の作用を受けて樹脂粒子表面に処理剤
が強固に付着し、前記粉末剥離等のトラブルのない表面
処理剤が被覆された発泡性粒子が得られる。When a foamable thermoplastic resin and a surface treatment agent are charged into a mixer equipped with such a high-speed rotating stirring blade and stirred at high speed, the treatment agent becomes firmly attached to the surface of the resin particles due to the action of a strong shearing force. It is possible to obtain expandable particles coated with a surface treatment agent that adheres to the powder and does not cause problems such as powder peeling.
しかして、本発明で使用される発泡性熱可塑性樹脂粒子
とはポリスチレン樹脂、ポリメタアクリレ°−ト樹脂、
ポリエチレン樹脂等の単独あるいは混合された熱可塑性
樹脂粒子にプロパン、ブタンジクロロフルオロメタン等
の発泡剤を圧入した粒径０．２〜２．５ｍｍ程度のもの
であって、これらは未発泡状態にある。また、添加され
る表面処理剤としては発泡性樹脂の品質を向上するもの
ならば何れでもよく１例えば成形時間を短縮する効果の
あるカルボン酸アミドや脂肪酸エステル等の成形サイク
ル促進剤が本発明において最も効果が顕著である。Therefore, the expandable thermoplastic resin particles used in the present invention include polystyrene resin, polymethacrylate resin,
These are particles of thermoplastic resin, such as polyethylene resin, singly or mixed, with a blowing agent such as propane or butane dichlorofluoromethane pressed into them, and have a particle size of approximately 0.2 to 2.5 mm, and are in an unfoamed state. . In addition, any surface treatment agent that can be added may be used as long as it improves the quality of the foamable resin.For example, molding cycle accelerators such as carboxylic acid amides and fatty acid esters that have the effect of shortening molding time are used in the present invention. The effect is most noticeable.
本発明の方法における攪拌時間は高エネルギー混合機の
攪拌羽根の回転数に関係するのであるが、通常１０〜３
０秒の範囲が好ましく、３０秒以上の攪拌では発泡性粒
子が発泡するおそれが生ずるばかりでなく１表面処理剤
が樹脂粒子の内部にまで浸透し、表面処理剤添加の所期
の目的を達成することが出来なくなり、また、１０秒以
下では発泡性粒子の表面に処理材が充分に付着しない。The stirring time in the method of the present invention is related to the rotation speed of the stirring blade of the high-energy mixer, and is usually 10 to 3
A range of 0 seconds is preferable; stirring for 30 seconds or more not only poses a risk of foaming of the expandable particles, but also allows the surface treatment agent to penetrate into the interior of the resin particles, achieving the intended purpose of adding the surface treatment agent. Furthermore, if the time is shorter than 10 seconds, the treatment material will not adhere sufficiently to the surface of the expandable particles.
また、攪拌槽内の温度は発泡性樹脂粒子の発泡が生起す
る温度以下である６０℃以下、更に好ましくは４５℃以
下に保つことが好ましい。Further, the temperature in the stirring tank is preferably kept at 60° C. or lower, which is the temperature at which foaming of the expandable resin particles occurs, more preferably at 45° C. or lower.
次に実施例をもって本発明の詳細を述べる。Next, the present invention will be described in detail with reference to Examples.
実施例
発泡剤（プロパンとブタンとの混合物）を含有した発泡
性ポリスチレン樹脂粒子７ｋｇを２０Ｑのヘンシェルミ
キサー（三片三池加工機製）に入れ、成形時間短縮効果
のある大豆硬化油１７．５ｇｒを入れ周速３軸／Ｓで羽
根を第１表に示した回転時間の間回転させて発泡性ポリ
スチレン樹脂粒子を得た。Example 7 kg of expandable polystyrene resin particles containing a blowing agent (a mixture of propane and butane) were placed in a 20Q Henschel mixer (manufactured by Mikata Miike Koki), and 17.5 g of hydrogenated soybean oil, which has the effect of shortening molding time, was added. The blade was rotated at a circumferential speed of 3 axes/S for the rotation time shown in Table 1 to obtain expandable polystyrene resin particles.
これらの発泡性ポリスチレン樹脂粒子をそれぞれ各１ｋ
ｇをサンプルとして採取し、そのサンプルを１ｍ高さか
らアクリル板上に落下衝突させてその時剥離する粉末の
量を測定した。一方、残りの発泡性ポリスチレン樹脂粒
子を予備発泡して成形し、成形時間を測定した。1k each of these expandable polystyrene resin particles
g was taken as a sample, the sample was dropped from a height of 1 m onto an acrylic plate, and the amount of powder exfoliated at that time was measured. On the other hand, the remaining expandable polystyrene resin particles were pre-foamed and molded, and the molding time was measured.
その結果を第１表に示す。The results are shown in Table 1.
第１表
回転時間 剥離度合 成形時間
２７０秒 ０．０１２ ｇｒ ２０２秒１８０ Ｎ
Ｏ，０１３ＩＩ ２０２ Ｎ１２０ Ｔ
ｌ Ｏ，０１６ＩＩ ２０１ ｌｌ９０１
１ Ｏ，０１４ｎ ２１９ ｌｌ６０ Ｉ
Ｉ Ｏ，０１５＃ １９５ Ｎ３０ ＃
０．０２０１１ １８５ ＃ｔｏ ＩＩ
Ｏ，０２８＃ １８０１１尚、従来の方法す
なはちダブルコーンミキサーで薬剤を同量ブレンドした
ものの剥離度合は０．０５２ｇｒでなおかつ成形時間は
１８７秒であった。Table 1 Rotation time Peeling degree Molding time 270 seconds 0.012 gr 202 seconds 180 N
O,013II 202 N120T
l O,016II 201 ll901
1 O,014n 219 ll60 I
IO,015# 195 N30#
0.02011 185 #to II
O, 028 # 18011 In addition, when using the conventional method, in which the same amount of chemicals were blended using a double cone mixer, the degree of peeling was 0.052 gr and the molding time was 187 seconds.
（効果）
以上述べたように本発明は高エネルギー混合機を使用し
て発泡性熱可塑性合成樹脂粒子と表面処理剤、特に該樹
脂粒子の成形サイクルを短縮させる処理剤とを発泡が生
起する温度以下に保ちつつ高速で攪拌混合することによ
り樹脂粒子表面に前記粉末処理剤が強固に付着し、従来
の粉末剥離トラブルを回避出来ると共に処理剤本来の特
性が損なわれることのない良好な性質を有する発泡性樹
脂粒子体が得られる等の効果を奏するのである。(Effects) As described above, the present invention uses a high-energy mixer to mix expandable thermoplastic synthetic resin particles and a surface treatment agent, particularly a treatment agent that shortens the molding cycle of the resin particles, at a temperature at which foaming occurs. By stirring and mixing at high speed while maintaining the following, the powder processing agent firmly adheres to the surface of the resin particles, avoiding the conventional powder peeling problem and having good properties that do not impair the original properties of the processing agent. This produces effects such as obtaining expandable resin particles.
Claims (1)
面処理剤とを所定の割合で装入し、該混合機により上記
発泡性樹脂粒子の発泡が生起する温度以下に保ちつつ高
速で攪拌混合することにより、表面に前記表面処理剤が
被覆された発泡性熱可塑性樹脂粒子の製造方法。 ２、表面処理剤が成形サイクル促進剤である特許請求の
範囲第１項記載の発泡性熱可塑性樹脂粒子の製造方法。[Claims] 1. A high-energy mixer is charged with foamable thermoplastic resin particles and a surface treatment agent at a predetermined ratio, and the mixer lowers the temperature to a temperature below which foaming of the foamable resin particles occurs. A method for producing expandable thermoplastic resin particles whose surfaces are coated with the surface treatment agent by stirring and mixing at high speed while maintaining the temperature. 2. The method for producing expandable thermoplastic resin particles according to claim 1, wherein the surface treatment agent is a molding cycle accelerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27846186A JPS63130646A (en) | 1986-11-21 | 1986-11-21 | Production of expandable synthetic thermoplastic resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27846186A JPS63130646A (en) | 1986-11-21 | 1986-11-21 | Production of expandable synthetic thermoplastic resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63130646A true JPS63130646A (en) | 1988-06-02 |
Family
ID=17597651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27846186A Pending JPS63130646A (en) | 1986-11-21 | 1986-11-21 | Production of expandable synthetic thermoplastic resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63130646A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002062882A1 (en) * | 2001-02-08 | 2002-08-15 | Basf Aktiengesellschaft | Expandable polyolefin particles |
-
1986
- 1986-11-21 JP JP27846186A patent/JPS63130646A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002062882A1 (en) * | 2001-02-08 | 2002-08-15 | Basf Aktiengesellschaft | Expandable polyolefin particles |
| KR100837979B1 (en) * | 2001-02-08 | 2008-06-13 | 바스프 에스이 | Expandable Polyolefin Particles |
| CZ300732B6 (en) * | 2001-02-08 | 2009-07-29 | Basf Aktiengesellschaft | Expandable polyolefin particles |
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