JPS63125537A - Production of antistatic expandable resin particle - Google Patents
Production of antistatic expandable resin particleInfo
- Publication number
- JPS63125537A JPS63125537A JP27202386A JP27202386A JPS63125537A JP S63125537 A JPS63125537 A JP S63125537A JP 27202386 A JP27202386 A JP 27202386A JP 27202386 A JP27202386 A JP 27202386A JP S63125537 A JPS63125537 A JP S63125537A
- Authority
- JP
- Japan
- Prior art keywords
- resin particles
- antistatic agent
- antistatic
- agent
- mixers
- 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.)
- Granted
Links
- 239000002245 particle Substances 0.000 title claims abstract description 47
- 229920005989 resin Polymers 0.000 title claims abstract description 32
- 239000011347 resin Substances 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 239000002216 antistatic agent Substances 0.000 claims abstract description 38
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 7
- 239000000057 synthetic resin Substances 0.000 claims abstract description 7
- 239000002344 surface layer Substances 0.000 claims abstract description 6
- 239000012736 aqueous medium Substances 0.000 claims abstract description 4
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 3
- 239000004088 foaming agent Substances 0.000 claims description 4
- 239000003112 inhibitor Substances 0.000 claims description 2
- 229920005992 thermoplastic resin Polymers 0.000 abstract description 13
- 239000004604 Blowing Agent Substances 0.000 abstract description 10
- 238000002156 mixing Methods 0.000 abstract description 8
- 239000000843 powder Substances 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 abstract description 4
- 125000000129 anionic group Chemical group 0.000 abstract description 2
- 125000002091 cationic group Chemical group 0.000 abstract description 2
- 238000010008 shearing Methods 0.000 abstract 3
- 238000013019 agitation Methods 0.000 abstract 2
- 150000001875 compounds Chemical class 0.000 abstract 1
- 230000003179 granulation Effects 0.000 abstract 1
- 238000005469 granulation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 19
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000006260 foam Substances 0.000 description 6
- 238000005187 foaming Methods 0.000 description 5
- 238000004898 kneading Methods 0.000 description 5
- 238000003756 stirring Methods 0.000 description 4
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 3
- 239000007900 aqueous suspension Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920005990 polystyrene resin Polymers 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 150000002484 inorganic compounds Chemical class 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000375 suspending agent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- LNAZSHAWQACDHT-XIYTZBAFSA-N (2r,3r,4s,5r,6s)-4,5-dimethoxy-2-(methoxymethyl)-3-[(2s,3r,4s,5r,6r)-3,4,5-trimethoxy-6-(methoxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6r)-4,5,6-trimethoxy-2-(methoxymethyl)oxan-3-yl]oxyoxane Chemical compound CO[C@@H]1[C@@H](OC)[C@H](OC)[C@@H](COC)O[C@H]1O[C@H]1[C@H](OC)[C@@H](OC)[C@H](O[C@H]2[C@@H]([C@@H](OC)[C@H](OC)O[C@@H]2COC)OC)O[C@@H]1COC LNAZSHAWQACDHT-XIYTZBAFSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 239000004338 Dichlorodifluoromethane Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- JUNWLZAGQLJVLR-UHFFFAOYSA-J calcium diphosphate Chemical compound [Ca+2].[Ca+2].[O-]P([O-])(=O)OP([O-])([O-])=O JUNWLZAGQLJVLR-UHFFFAOYSA-J 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 229940043256 calcium pyrophosphate Drugs 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- NEHMKBQYUWJMIP-NJFSPNSNSA-N chloro(114C)methane Chemical compound [14CH3]Cl NEHMKBQYUWJMIP-NJFSPNSNSA-N 0.000 description 1
- HRYZWHHZPQKTII-UHFFFAOYSA-N chloroethane Chemical compound CCCl HRYZWHHZPQKTII-UHFFFAOYSA-N 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 235000019821 dicalcium diphosphate Nutrition 0.000 description 1
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 description 1
- 235000019404 dichlorodifluoromethane Nutrition 0.000 description 1
- XZTWHWHGBBCSMX-UHFFFAOYSA-J dimagnesium;phosphonato phosphate Chemical compound [Mg+2].[Mg+2].[O-]P([O-])(=O)OP([O-])([O-])=O XZTWHWHGBBCSMX-UHFFFAOYSA-J 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229960003750 ethyl chloride Drugs 0.000 description 1
- 229920006248 expandable polystyrene Polymers 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010097 foam moulding Methods 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- DMEGYFMYUHOHGS-UHFFFAOYSA-N heptamethylene Natural products C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- QWTDNUCVQCZILF-UHFFFAOYSA-N iso-pentane Natural products CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- GVALZJMUIHGIMD-UHFFFAOYSA-H magnesium phosphate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 description 1
- 239000004137 magnesium phosphate Substances 0.000 description 1
- 229910000157 magnesium phosphate Inorganic materials 0.000 description 1
- 229960002261 magnesium phosphate Drugs 0.000 description 1
- 235000010994 magnesium phosphates Nutrition 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 1
- 229940029284 trichlorofluoromethane Drugs 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は帯電防止能を有する発泡性樹脂粒子の製造方法
に関する
（従来の技術及び解決すべき問題点）
発泡体に帯電防止能を賦与する手段として最も通常の方
法は発泡体を帯電防止剤溶液中に浸漬したり或は帯電防
止剤溶液を噴霧したりする等の手段によって発泡体表面
に帯電防止層を形成する方法である。しかしながら、こ
の方法は発泡成形体を製造後に施すため容積の大なる発
泡体を処理するという不便さと共に成形メーカーの工程
数が増加するという欠点があった。この欠点を改善する
ため発泡体を成形する以前の段階で帯電防止能を付与す
る必要がある。すなわち、帯電防止剤を重合時に添加す
る方法、重合後樹脂段階で樹脂に練り込む方法（練り込
み法）、又は樹脂に発泡剤を圧入反応時に添加する方法
（反応時添加法）、或は発泡剤圧入後、得られた発泡性
熱可塑性樹脂粒子に添加ブレンドする方法（ブレンド法
）等がある６しかして、これらの方法のうち、練込み方
法は帯電防止剤を押出機で混練、ペレット状に切断して
いるため球状にならず、したがって金型充填に悪い影響
を与え、また成形物の機械的強度も低下する。Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a method for producing foamable resin particles having antistatic ability (prior art and problems to be solved) Imparting antistatic ability to a foam The most common method is to form an antistatic layer on the surface of the foam by immersing the foam in an antistatic agent solution or spraying the antistatic agent solution. However, since this method is applied after the foamed molded product is manufactured, it has the disadvantage that it is inconvenient to treat a large volume of foamed product and the number of steps for the molding manufacturer increases. In order to improve this drawback, it is necessary to impart antistatic properties to the foam before it is molded. That is, a method of adding an antistatic agent during polymerization, a method of kneading it into the resin at the resin stage after polymerization (kneading method), a method of adding a blowing agent to the resin during the press-in reaction (addition method during reaction), or foaming. After press-injecting the antistatic agent, there is a method of adding it to the obtained expandable thermoplastic resin particles (blending method).6 Among these methods, the kneading method involves kneading the antistatic agent in an extruder and forming it into pellets. Since it is cut into a spherical shape, it does not have a spherical shape, which adversely affects mold filling and also reduces the mechanical strength of the molded product.
ブレンド方゛法は発泡性樹脂粒子の表面と帯電防止剤と
の結合が弱く、予備発泡時、発泡性樹脂粒子を発泡機内
に退位ホースで送る際にホース内に’＃ＦＷ１防止剤が
付着し退位操作に障害を与え、また、発泡剤を圧入反応
時に添加する反応添加方法では帯電防止剤が樹脂の分散
系を懐したリボリマーに吸収されず、添加効率が悪く、
良好な帯電防止性能を有する発泡性樹脂粒子が得にくい
という欠点がある。In the blending method, the bond between the surface of the foamable resin particles and the antistatic agent is weak, and during pre-foaming, when the foamable resin particles are fed into the foaming machine with the ablation hose, the #FW1 inhibitor may adhere to the inside of the hose. In addition, in the reactive addition method in which the blowing agent is added during the injection reaction, the antistatic agent is not absorbed into the ribolimer containing the resin dispersion system, resulting in poor addition efficiency.
There is a drawback that it is difficult to obtain expandable resin particles having good antistatic performance.
他方、近時樹脂に高剪断力を与えながら顔料を混合した
樹脂の着色方法があるが、未だ発泡性樹脂に帯電防止剤
を添加する際に高剪断力を与えることは行なわれていな
い。On the other hand, there has recently been a method for coloring a resin by mixing pigments while applying a high shear force to the resin, but it has not yet been carried out to apply a high shear force when adding an antistatic agent to a foamable resin.
ところで、本発明者は上記の欠点を改良するため高剪断
力を利用して帯電防止剤を発泡性樹脂に添加、攪拌、混
合したところ、樹脂と帯電防止剤との結合力は極めてつ
よく１発泡性樹脂粒子送粒の際の帯電防止剤の脱落が改
良され帯電防止剤の添加効率が向上すると共に成形段階
での発泡粒の重填性をも改良できることを見つけ、本発
明を完成した。By the way, in order to improve the above-mentioned drawbacks, the present inventor added, stirred, and mixed an antistatic agent to a foamable resin using high shear force, and the bonding force between the resin and the antistatic agent was extremely strong, resulting in one foaming. The present invention has been completed based on the discovery that the dropping of the antistatic agent during feeding of the plastic particles can be improved, the efficiency of adding the antistatic agent can be improved, and the loading properties of the foamed beads at the molding stage can also be improved.
（問題点を解決するための手段）
すなわち、本発明は熱可塑性合成樹脂粒子に帯電防止剤
を添加し高剪断力のもとに両者を攪拌混合し、該樹脂粒
子の表面層が軟化した状態で該樹脂粒子の表面に帯電防
止剤を付着せしめて帯電防止剤含有合成樹脂粒子とし、
しかるのち、該帯電防止剤含有合成樹脂に水性媒体中で
発泡剤を含浸させることを特徴とする帯電防止能を有す
る発泡性樹脂粒子の製造方法である６
本発明において用いられる帯電防止剤は、カチオン系、
アニオン系、ノニオン系、両性系いずれでも良く、又、
液状、粉状いずれも可能であるが、液体は粘性のないも
の、粉体は、微粉状のものが望ましい。粘性のある場合
や粒度の大きい粉体の場合はアルコール等の溶剤に溶解
して用いても良い、また、本発明の方法において用いら
れる熱可塑性樹脂粒子としては、ポリスチレンの他、ポ
リエチレンやポリプロピレンなどのポリオレフィン類や
、ポリメチルメタクリレートなどのメタクリル酸エステ
ルの重合体、又は、これらの共重合体などがある。そし
て、本発明ではこれらの帯電防止剤と熱可塑性樹脂粒子
とを高剪断力のも、とに攪拌混合するのであるが、高剪
断力のもとに攪拌混合する手段としては周速２０ｍ／ｓ
以上の回転速度の攪拌羽根を有するミキサーで両者を攪
拌混合するのであり、かかるミキサーの好適な例として
は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がある。このような高剪断力の
もとに攪拌混合することにより熱可塑性樹脂粒子の表面
層が軟化状態になり、その状態で帯電防止剤が樹脂粒子
の表面層に付着するのである。(Means for Solving the Problems) That is, the present invention adds an antistatic agent to thermoplastic synthetic resin particles and stirs and mixes both under high shear force, so that the surface layer of the resin particles is softened. An antistatic agent is attached to the surface of the resin particles to obtain antistatic agent-containing synthetic resin particles,
Thereafter, the antistatic agent used in the present invention is a method for producing expandable resin particles having antistatic ability, which comprises impregnating the antistatic agent-containing synthetic resin with a foaming agent in an aqueous medium. cationic,
It may be anionic, nonionic, or amphoteric, and
Both liquid and powder forms are possible, but liquids are preferably non-viscous, and powders are preferably fine powders. If the powder is viscous or has a large particle size, it may be used by dissolving it in a solvent such as alcohol.Also, the thermoplastic resin particles used in the method of the present invention include polyethylene, polypropylene, etc. in addition to polystyrene. Examples include polyolefins, polymers of methacrylic acid esters such as polymethyl methacrylate, and copolymers thereof. In the present invention, these antistatic agents and thermoplastic resin particles are stirred and mixed under high shear force, and the means for stirring and mixing under high shear force is at a circumferential speed of 20 m/s.
The two are stirred and mixed using a mixer having stirring blades at the above rotational speed. Preferred examples of such mixers include fixed-container high-speed fluid mixers such as Henschel mixers and super mixers. By stirring and mixing under such high shear force, the surface layer of the thermoplastic resin particles becomes softened, and in this state, the antistatic agent adheres to the surface layer of the resin particles.
上記方法により得られた？ｌＦ電防止剤を含有する熱可
塑性樹脂粒子に水性懸濁液中で添圧下に発泡剤を含浸せ
しめる。水性懸濁液に使用されるａｍ剤は、前記の帯電
防止剤を含有する熱可塑性樹脂粒子が発泡剤の含浸中に
互いに結合または合着するのを防止するために添加する
ものであって、例えば部分鹸化ポリビニルアルコール、
ポリアクリル酸塩、ポリビニルピロリドン、カルボキシ
メチルセルロース、メチルセルロース、ステアリン酸カ
ルシウム、エチレンビスステアロアミド等の有機化合物
の他５ピロリン酸マグネシウム、リン酸マグネシウム、
ＮＩ化マグネシウム、炭酸マグネシウム、ピロリン酸カ
ルシウム、リン酸カルシウム。Obtained by the above method? The thermoplastic resin particles containing the IF antistatic agent are impregnated with the blowing agent in an aqueous suspension under applied pressure. The am agent used in the aqueous suspension is added to prevent the thermoplastic resin particles containing the antistatic agent from binding or coalescing with each other during impregnation with the blowing agent, and For example, partially saponified polyvinyl alcohol,
In addition to organic compounds such as polyacrylate, polyvinylpyrrolidone, carboxymethylcellulose, methylcellulose, calcium stearate, and ethylene bisstearamide, magnesium 5-pyrophosphate, magnesium phosphate,
Magnesium nitride, magnesium carbonate, calcium pyrophosphate, calcium phosphate.
炭酸カルシウム等の水に難溶性の微粉末からなる無機化
合物を挙げることができる。本発明の方法において、懸
濁剤として無機化合物を使用する場合には、ドデシルベ
ンゼンスルホン酸ソーダの如き界面活性剤を併用するこ
とが望ましい。Examples include inorganic compounds consisting of fine powders that are poorly soluble in water, such as calcium carbonate. In the method of the present invention, when an inorganic compound is used as a suspending agent, it is desirable to use a surfactant such as sodium dodecylbenzenesulfonate.
又１本発明方法で使用される発泡剤としては、易揮発性
の発泡剤、即ち、プロパン、ｎ−ブタン、ｉ−ブタン、
ｎ−ペンタン、ｉ−ペンタン、ｎ−ヘキサン等の脂肪族
炭化水素、シクロペンタン、シクロヘキサン等の環式脂
肪族炭化水素、メチルクロライド、エチルクロライド、
ジクロロジフルオロメタン、トリクロロフルオロメタン
等のハロゲン化炭化水素を挙げることができる。これら
の発泡剤は前記帯電防止剤を含有する熱可塑性樹脂粒子
に対して一般に３〜４０重量％の割合で使用される。又
、トルエン、キシレン等の有機溶剤を少量（１〜５重量
％）併用しても良い。The blowing agents used in the method of the present invention include easily volatile blowing agents, such as propane, n-butane, i-butane,
Aliphatic hydrocarbons such as n-pentane, i-pentane, n-hexane, cycloaliphatic hydrocarbons such as cyclopentane and cyclohexane, methyl chloride, ethyl chloride,
Examples include halogenated hydrocarbons such as dichlorodifluoromethane and trichlorofluoromethane. These blowing agents are generally used in an amount of 3 to 40% by weight based on the thermoplastic resin particles containing the antistatic agent. Further, a small amount (1 to 5% by weight) of an organic solvent such as toluene or xylene may be used in combination.
発泡剤の含浸は、例えばオートクレーブ中に懸濁剤を含
有した水性懸濁液中に前記帯電防止剤を含有する熱可塑
性樹脂粒子を懸濁し、加熱して発泡剤を圧入することに
よって含浸せられ、発泡性熱可塑性樹脂粒子が得られる
。Impregnation with a blowing agent can be carried out, for example, by suspending thermoplastic resin particles containing the antistatic agent in an aqueous suspension containing a suspending agent in an autoclave, heating the mixture, and pressurizing the foaming agent. , expandable thermoplastic resin particles are obtained.
本発明の方法によって得られる発泡性熱可塑性樹脂粒子
は、これを予備発泡した後、金型の形窩内で発泡成形す
ることにより、所望の形状を有する発泡成形体とするこ
とができる。この発泡成形体の表面は帯電防止剤の作用
により良好な帯電防止性能を有している。The expandable thermoplastic resin particles obtained by the method of the present invention can be made into a foam molded article having a desired shape by pre-foaming the particles and then foam-molding them within the cavity of a mold. The surface of this foamed molded product has good antistatic performance due to the action of the antistatic agent.
次に、本発明を実施例をもって具体的に説明する。Next, the present invention will be specifically explained using examples.
実施例
ポリスチレン樹脂粒子７ｋｇ及び第４級アンモニウム塩
型の帯電防止剤７０ｇ（ポリスチレン樹脂粒子の１ｗｔ
幻をスーパーミキサー２０Ｑ（用Ｅｌｆ製作所）内に投
入し、周速２４ｍ／ ｓで該スーパーミキサーの羽根を
回転させ、流動状態および温度をチェックしながら混合
を行った。温度が樹脂の軟化点に到達する直前（１００
℃）で、回転をやめ帯電防止剤の添加されたポリスチレ
ン樹脂粒子を取り出した。Example 7 kg of polystyrene resin particles and 70 g of quaternary ammonium salt type antistatic agent (1 wt of polystyrene resin particles)
The mixture was placed in a super mixer 20Q (manufactured by Elf Seisakusho), and the blades of the super mixer were rotated at a circumferential speed of 24 m/s to perform mixing while checking the flow state and temperature. Just before the temperature reaches the softening point of the resin (100
℃), the rotation was stopped and the polystyrene resin particles to which the antistatic agent had been added were taken out.
前記方法にて得られた樹脂１００重量部を水１００重量
部、ピロリン酸マグネシュウム０．２５重量部、アルキ
ルベンゼンスルホン酸ソーダ０．９重量部、トルエン２
重量部と共に耐圧容器中に充填し、ブタン８重量部を圧
入し８０℃で４時間維持した後、冷却取出しを行なった
。得られた発泡性ポリスチレン樹脂粒子を取り出しより
７日後、５０倍に予備発泡し、翌日成形し成形体を得た
。100 parts by weight of the resin obtained by the above method were mixed with 100 parts by weight of water, 0.25 parts by weight of magnesium pyrophosphate, 0.9 parts by weight of sodium alkylbenzenesulfonate, and 2 parts by weight of toluene.
8 parts by weight of butane were press-fitted and maintained at 80° C. for 4 hours, and then cooled and taken out. Seven days after taking out the obtained expandable polystyrene resin particles, they were pre-foamed to a size of 50 times, and molded the next day to obtain a molded article.
この成形体を２３℃、５５％Ｒ）Ｉの恒温恒湿室に１昼
夜放置し、その表面固有抵抗値を測定したところ２Ｘ１
０”Ωとなり、良好な帯電防止能を持つ成形体が得られ
た。This molded body was left in a constant temperature and humidity chamber at 23°C and 55% R)I for one day and the surface resistivity was measured.
0''Ω, and a molded article with good antistatic ability was obtained.
（効果）
以上、述べたように、本発明は樹脂粒子を溶融混練する
ことなく高剪断力のもとて熱可塑性樹脂粒子と帯電防止
剤とを混合するため該樹脂粒子の表面層が軟化した状態
で該樹脂粒子の表面に帯電防止剤を付着せしめるため樹
脂粒子の形状はそのまま保たれ、成形時、発泡粒の充填
に悪影響を生ずることなく、また、帯電防止剤は適度に
表面付近に入り込んでおり、単なるブレンド法に比べ発
泡性熱可塑性樹脂粒子を逆位の際、帯電防止剤の脱落が
改良される。(Effects) As described above, the present invention mixes thermoplastic resin particles and antistatic agent under high shear force without melting and kneading the resin particles, so that the surface layer of the resin particles is softened. Since the antistatic agent is attached to the surface of the resin particles while the resin particles are in a state of confinement, the shape of the resin particles is maintained as is, and during molding, there is no adverse effect on the filling of the foam particles, and the antistatic agent penetrates appropriately near the surface. This improves the shedding of the antistatic agent when the expandable thermoplastic resin particles are inverted compared to a simple blending method.
Claims (1)
もとに両者を攪拌混合し、該樹脂粒子の表面層が軟化し
た状態で該樹脂粒子の表面に帯電防止剤を付着せしめて
帯電防止剤含有合成樹脂粒子とし、しかるのち、該帯電
防止剤含有合成樹脂に水性媒体中で発泡剤を含浸させる
ことを特徴とする帯電防止能を有する発泡剤樹脂粒子の
製造方法An antistatic agent is added to the thermoplastic synthetic resin particles, and the two are stirred and mixed under high shear force, and while the surface layer of the resin particles is softened, the antistatic agent is attached to the surface of the resin particles to prevent charging. A method for producing foaming agent resin particles having antistatic ability, which comprises forming inhibitor-containing synthetic resin particles, and then impregnating the antistatic agent-containing synthetic resin with a foaming agent in an aqueous medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61272023A JPH06860B2 (en) | 1986-11-17 | 1986-11-17 | Method for producing expandable resin particles having antistatic ability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61272023A JPH06860B2 (en) | 1986-11-17 | 1986-11-17 | Method for producing expandable resin particles having antistatic ability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63125537A true JPS63125537A (en) | 1988-05-28 |
| JPH06860B2 JPH06860B2 (en) | 1994-01-05 |
Family
ID=17508052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61272023A Expired - Lifetime JPH06860B2 (en) | 1986-11-17 | 1986-11-17 | Method for producing expandable resin particles having antistatic ability |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06860B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010144004A (en) * | 2008-12-17 | 2010-07-01 | Sekisui Plastics Co Ltd | Pre-expanded particle, method for manufacturing the same, and expansion-molded body |
| WO2010074246A1 (en) * | 2008-12-26 | 2010-07-01 | 積水化成品工業株式会社 | Pre-expanded particles, process for producing same, and molded foam |
| US7901602B2 (en) | 2003-04-04 | 2011-03-08 | Sekisui Plastics Co., Ltd. | Expandable styrene-modified olefin resin particle, pre-expanded particle, and process for producing molded foam |
| JP2015000907A (en) * | 2013-06-14 | 2015-01-05 | 旭化成ケミカルズ株式会社 | Foaming particle and foaming particle molding |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57147529A (en) * | 1981-03-09 | 1982-09-11 | Tanaka Kagaku Kenkyusho:Kk | Foaming method of foamable resin |
| JPS58201827A (en) * | 1982-05-20 | 1983-11-24 | Achilles Corp | Expandable polystyrene bead and formed article prepared therefrom |
-
1986
- 1986-11-17 JP JP61272023A patent/JPH06860B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57147529A (en) * | 1981-03-09 | 1982-09-11 | Tanaka Kagaku Kenkyusho:Kk | Foaming method of foamable resin |
| JPS58201827A (en) * | 1982-05-20 | 1983-11-24 | Achilles Corp | Expandable polystyrene bead and formed article prepared therefrom |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7901602B2 (en) | 2003-04-04 | 2011-03-08 | Sekisui Plastics Co., Ltd. | Expandable styrene-modified olefin resin particle, pre-expanded particle, and process for producing molded foam |
| JP2010144004A (en) * | 2008-12-17 | 2010-07-01 | Sekisui Plastics Co Ltd | Pre-expanded particle, method for manufacturing the same, and expansion-molded body |
| WO2010074246A1 (en) * | 2008-12-26 | 2010-07-01 | 積水化成品工業株式会社 | Pre-expanded particles, process for producing same, and molded foam |
| JP5548621B2 (en) * | 2008-12-26 | 2014-07-16 | 積水化成品工業株式会社 | Pre-expanded particles, method for producing the same, and foam molded article |
| US8796344B2 (en) | 2008-12-26 | 2014-08-05 | Sekisui Plastics Co., Ltd. | Pre-expanded particles, process for producing the same, and expanded molded article |
| JP2015000907A (en) * | 2013-06-14 | 2015-01-05 | 旭化成ケミカルズ株式会社 | Foaming particle and foaming particle molding |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06860B2 (en) | 1994-01-05 |
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