JPH0511133B2 - - Google Patents
Info
- Publication number
- JPH0511133B2 JPH0511133B2 JP60011791A JP1179185A JPH0511133B2 JP H0511133 B2 JPH0511133 B2 JP H0511133B2 JP 60011791 A JP60011791 A JP 60011791A JP 1179185 A JP1179185 A JP 1179185A JP H0511133 B2 JPH0511133 B2 JP H0511133B2
- Authority
- JP
- Japan
- Prior art keywords
- polystyrene resin
- black
- carbon black
- foamable
- containing carbon
- 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.)
- Expired - Lifetime
Links
- 229920005990 polystyrene resin Polymers 0.000 claims description 57
- 239000006229 carbon black Substances 0.000 claims description 39
- 239000012508 resin bead Substances 0.000 claims description 28
- 229920006248 expandable polystyrene Polymers 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 238000003860 storage Methods 0.000 claims description 2
- 235000019241 carbon black Nutrition 0.000 description 36
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 14
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 10
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 9
- 239000006260 foam Substances 0.000 description 8
- 239000001273 butane Substances 0.000 description 7
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 7
- 239000001294 propane Substances 0.000 description 7
- 239000004794 expanded polystyrene Substances 0.000 description 6
- -1 methylene bisamide Chemical compound 0.000 description 6
- 239000004604 Blowing Agent Substances 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 239000004088 foaming agent Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 230000005070 ripening Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- WBIQQQGBSDOWNP-UHFFFAOYSA-N 2-dodecylbenzenesulfonic acid Chemical compound CCCCCCCCCCCCC1=CC=CC=C1S(O)(=O)=O WBIQQQGBSDOWNP-UHFFFAOYSA-N 0.000 description 1
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-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
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 229940072049 amyl acetate Drugs 0.000 description 1
- PGMYKACGEOXYJE-UHFFFAOYSA-N anhydrous amyl acetate Natural products CCCCCOC(C)=O PGMYKACGEOXYJE-UHFFFAOYSA-N 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- ZFMQKOWCDKKBIF-UHFFFAOYSA-N bis(3,5-difluorophenyl)phosphane Chemical compound FC1=CC(F)=CC(PC=2C=C(F)C=C(F)C=2)=C1 ZFMQKOWCDKKBIF-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 229940060296 dodecylbenzenesulfonic acid Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- MNWFXJYAOYHMED-UHFFFAOYSA-M heptanoate Chemical compound CCCCCCC([O-])=O MNWFXJYAOYHMED-UHFFFAOYSA-M 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- ALIFPGGMJDWMJH-UHFFFAOYSA-N n-phenyldiazenylaniline Chemical compound C=1C=CC=CC=1NN=NC1=CC=CC=C1 ALIFPGGMJDWMJH-UHFFFAOYSA-N 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 description 1
- 229940048086 sodium pyrophosphate Drugs 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 235000019818 tetrasodium diphosphate Nutrition 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- 239000006234 thermal black Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Description
【発明の詳細な説明】
〔作業上の利用分野〕
本発明は、黒色度に富み、良好な外観を有する
発泡ポリスチレン成形品をつくることができる発
泡性ポリスチレン樹脂ビーズを、その特性を低下
することなく保存する方法に関する。[Detailed Description of the Invention] [Working Field of Application] The present invention provides a method for producing expandable polystyrene resin beads that can produce expanded polystyrene molded products having a high blackness and a good appearance, by reducing the properties of the expandable polystyrene resin beads. Concerning how to save without.
カーボンブラツクまたはカーボンブラツクグラ
フトポリマーをポリスチレン樹脂とともに、押出
機において押出し、ペレツト化して、カーボンブ
ラツク含有発泡性ポリスチレン樹脂ビーズをつく
ること（特開昭58−111839号公報および特公昭58
−46255号公報）が、これまでに既に知られてい
る。これらのカーボンブラツク含有発泡性ポリス
チレン樹脂ビーズは、カーボンブラツクを含有す
るポリスチレン樹脂粒子に発泡剤（ブタンまたは
プロパンなどの発泡剤を含浸した後に、脱水およ
び乾燥して、付着水分のない状態のものにされて
いる。これらのカーボンブラツク含有黒色発泡性
ポリスチレン樹脂ビーズを、発泡ポリスチレンを
つくるために、常法にしたがつて予備発泡する
と、その内部はほぼ黒色を維持するが、その表面
は、気泡が密になるためにその白色度が増大する
ので、その成形品は黒色度の低下したものにな
り、その商品価値を低下することが多い。またこ
れらのカーボンブラツク含有発泡性ポリスチレン
樹脂ビーズは、発泡剤の含浸後に、熟成期間を長
くとらなければ、成形品の収縮を起し、それによ
つて良好な構造および形状を有する発泡ポリスチ
レン成形品をつくることができなくなることが非
常に多い。 Extruding carbon black or a carbon black graft polymer together with a polystyrene resin in an extruder and pelletizing it to produce carbon black-containing expandable polystyrene resin beads (Japanese Patent Application Laid-open No. 111839/1983 and Japanese Patent Publication No. 58/1989)
-46255) is already known. These carbon black-containing expandable polystyrene resin beads are made by impregnating carbon black-containing polystyrene resin particles with a blowing agent (such as butane or propane), then dehydrating and drying them to make them free of adhering moisture. When these carbon black-containing black expandable polystyrene resin beads are pre-foamed in a conventional manner to make expanded polystyrene, the inside remains almost black, but the surface has no air bubbles. As the density increases, its whiteness increases, resulting in molded products with reduced blackness, which often reduces its commercial value.Furthermore, these carbon black-containing expandable polystyrene resin beads are Very often, after impregnation with the agent, a long aging period is not allowed, or shrinkage of the molded article occurs, thereby making it impossible to produce expanded polystyrene molded articles with good structure and shape.
本発明者等は、外観および内部構造の良好な発
泡ポリスチレン成形品をつくるために数多くの研
究を行なつてきたが、その研究において、発泡剤
をポリスチレン樹脂ビーズに含浸した後に、脱水
および乾燥工程を経ることなく、付着水分が残存
した状態において保存したカーボンブラツク含有
発泡性ポリスチレン樹脂ビーズは、これを発泡成
形したときに、黒色度に富みまた外観および内部
構造の良好なカーボンブラツク含有発泡ポリスチ
レン成形品が得られることを見出し、この知見に
もとづいて本発明を完成した。 The present inventors have conducted numerous studies to create foamed polystyrene molded products with good external appearance and internal structure. Expandable polystyrene resin beads containing carbon black that have been stored in a state where attached moisture remains without undergoing any process will have a rich blackness and a good appearance and internal structure when foam molded. Based on this knowledge, the present invention was completed.
本発明の目的は、黒色度に富み、外観および内
部構造の良好なカーボンブラツク含有発泡ポリス
チレン成形品をつくることができるカーボンブラ
ツク含有発泡性ポリスチレン樹脂ビーズを提供す
ることにあり、詳しくは、カーボンブラツク含有
発泡性ポリスチレン樹脂ビーズの黒色度に富み、
外観および内部構造の良好なカーボンブラツク含
有発泡ポリスチレン成形品をつくることができる
特性を低下することなく、長期間保存することが
できる方法を提供することにある。
An object of the present invention is to provide carbon black-containing expandable polystyrene resin beads that can be used to produce carbon black-containing expanded polystyrene molded products that are rich in blackness and have a good appearance and internal structure. The expanded polystyrene resin beads contained are rich in blackness,
The object of the present invention is to provide a method for producing a carbon black-containing expanded polystyrene molded product having a good appearance and internal structure, which can be stored for a long period of time without deteriorating its properties.
本発明は、カーボンブラツクを含有する黒色発
泡性ポリスチレン系樹脂を少なくとも0.5％（重
量）の付着水分の存在下に保存することを特徴と
する黒色発泡性ポリスチレン系樹脂の保管方法で
ある。 The present invention is a method for storing black foamable polystyrene resin containing carbon black in the presence of at least 0.5% (by weight) of attached moisture.
本発明におけるカーボンブラツクを含有する黒
色発泡性ポリスチレン系樹脂は黒色発泡性ポリス
チレン樹脂ビーズであることができ、またカーボ
ンブラツクを含有する黒色発泡性ポリスチレン系
樹脂またはそのビーズを、製造直後に脱水、乾燥
することなく、直ちに非透水性の容器に収容する
こともできる。 The black foamable polystyrene resin containing carbon black in the present invention can be black foamable polystyrene resin beads, and the black foamable polystyrene resin containing carbon black or its beads can be dehydrated and dried immediately after production. It is also possible to immediately store it in a water-impermeable container without removing it.
本明細書におけるカーボンブラツクを含有する
黒色発泡性ポリスチレン系樹脂の付着水分は、カ
ーボンブラツクを含有する黒色発泡性ポリスチレ
ン系樹脂の内層および外層に付着する水分であつ
て、この付着水分は、カーボンブラツクを含有す
る黒色発泡性ポリスチレン系樹脂を室温（23℃）
において５分間乾燥することによつて検出するこ
とができる。
In this specification, the adhering moisture of the black foamable polystyrene resin containing carbon black is the moisture adhering to the inner layer and outer layer of the black foaming polystyrene resin containing carbon black, and this adhering moisture is the moisture that adheres to the black foamable polystyrene resin containing carbon black. Black foamable polystyrene resin containing
It can be detected by drying for 5 minutes at .
カーボンブラツクを含有する黒色発泡性ポリス
チレン系樹脂は、ポリスチレン系樹脂、カーボン
ブラツクおよび発泡剤とからなつている。 The black foamable polystyrene resin containing carbon black is composed of a polystyrene resin, carbon black, and a blowing agent.
ポリスチレン系樹脂としては、スチレン単独重
合体またはスチレンを主成分とし、スチレンと共
重合可能な他の単量体との共重合体、たとえばス
チレンとα−メチルスチレンまたはメチルメタク
リレートなどの共重合体が使用される。 Polystyrene resins include styrene homopolymers or copolymers containing styrene as the main component and other monomers that can be copolymerized with styrene, such as copolymers of styrene and α-methylstyrene or methyl methacrylate. used.
カーボンブラツクは、ポリスチレン系樹脂に配
合することのできるものであれば、いかなるもの
であつても、これを使用することができるが、ケ
ツチエンブラツク、サーマルブラツク、これらの
カーボンブラツクにたとえばスチレンなどのビニ
ル単量体をグラフト重合して得たグラフト重合カ
ーボンブラツクを使用するのが好ましい。 Any carbon black can be used as long as it can be blended with polystyrene resin, but carbon black, thermal black, and other carbon blacks such as styrene can be used. It is preferable to use graft polymerized carbon black obtained by graft polymerizing vinyl monomers.
発泡剤は、ポリスチレン系樹脂の成形において
発泡プラスチツクを形成しうるものであれば、い
かなるものであつても、これを使用することがで
きるが、分解型発泡剤、たとえばアゾジジカルボ
ンアミド、炭酸水素ナトリウム、炭酸アンモニウ
ム、酢酸アミル、酢酸ブチルまたはジアゾアミノ
ベンゼン、または揮発性発泡剤、たとえばプロパ
ン、ブタン、ペンタンまたはフロンを使用するの
が好ましい。 Any blowing agent can be used as long as it can form a foamed plastic in the molding of polystyrene resin, but decomposable blowing agents such as azodidicarbonamide, hydrogen carbonate, etc. Preference is given to using sodium, ammonium carbonate, amyl acetate, butyl acetate or diazoaminobenzene, or volatile blowing agents such as propane, butane, pentane or freon.
カーボンブラツクを含有する黒色発泡性ポリス
チレン系樹脂は、カーボンブラツクを含むポリス
チレン系樹脂発泡体の製造に使用されるものであ
つて、ポリスチレン系樹脂にカーボンブラツクお
よび発泡剤を配合するか、またはポリスチレン系
樹脂にカーボンブラツクを配合して得た配合物を
ペレツト状または粒状に成形した後、揮発性発泡
剤をこれに含浸することによつてつくられるが、
その製造過程において水性媒体を使用し、それに
よつてカーボンブラツクを含有する黒色発泡性ポ
リスチレン系樹脂が付着水分を有する場合は、こ
れを製造直後に脱水、乾燥することなく、そのま
ま非透水性の容器または袋に収容して、そのまま
保管することができる。 The black foamable polystyrene resin containing carbon black is used in the production of polystyrene resin foam containing carbon black, and is made by blending carbon black and a foaming agent with polystyrene resin, or by blending carbon black and a foaming agent with polystyrene resin. It is made by blending carbon black into a resin, molding it into a pellet or granule, and then impregnating it with a volatile foaming agent.
If an aqueous medium is used in the manufacturing process, and as a result, the black foamable polystyrene resin containing carbon black has adhering moisture, it should be placed in a non-water permeable container without being dehydrated or dried immediately after manufacturing. Alternatively, it can be stored in a bag and stored as is.
カーボンブラツクを含有する黒色発泡性ポリス
チレン系樹脂における付着水分は、少なくとも
0.5％（重量）の量であることを必要とする。付
着水分の量が0.5％（重量）よりも少ない場合は、
カーボンブラツクを含有する黒色発泡性ポリスチ
レン系樹脂を発泡成形した場合に、ポリスチレン
系樹脂発泡体の黒色度が充分でなく、また成形性
も劣化する。 The amount of moisture attached to black foamable polystyrene resin containing carbon black is at least
Requires an amount of 0.5% (by weight). If the amount of attached moisture is less than 0.5% (weight),
When a black foamable polystyrene resin containing carbon black is foam-molded, the blackness of the polystyrene resin foam is insufficient and the moldability is also deteriorated.
またカーボンブラツクを含有する黒色発泡性ポ
リスチレン系樹脂の付着水分が多量になり、たと
えば、10％（重量）を超えると、カーボンブラツ
クを含有する黒色発泡性ポリスチレン系樹脂の予
備発泡における計量誤差の生じる原因となり、ま
たは作業性が低下することもある。 In addition, if the amount of moisture attached to the black foamable polystyrene resin containing carbon black increases, for example, if it exceeds 10% (by weight), measurement errors may occur during pre-foaming of the black foamable polystyrene resin containing carbon black. This may cause the problem or reduce workability.
以下において、本発明の実施の一例および比較
例を挙げるが、本発明はこれらの例示に限定され
るものではない。 An example of implementation of the present invention and a comparative example will be given below, but the present invention is not limited to these examples.
実施例 １
５の内容積の反応釜に、５％（重量）のカー
ボンブラツクを含むポリスチレン樹脂ペレツト
（４mm×1.8mmφ）1500ｇを入れ、この反応釜に、
ドデシルベンゼンスルホン酸の0.6％水溶液2500
c.c.、メチレンビスアマイド２ｇ、ピロリン酸ナト
リウム20ｇ、硫酸マグネシウム24ｇ、トルエン16
ｇおよびジオクチルアジペート4.5ｇを入れ、攪
拌しながら、ブタン270ｇおよびプロパン30ｇを
反応釜に圧入した後、２時間の間に内容物を85℃
に昇温した。反応釜をそのままの状態で３時間30
分保温した後、内容物の温度を30℃に降下し、ブ
タンおよびプロパンの含浸したポリスチレン樹脂
ビーズを反応釜から取り出した。このポリスチレ
ン樹脂ビーズには５％（重量）の水分が付着して
いたが、脱水および乾燥することなく、そのまま
ポリスチレン容器に入れ、密封して保管した。Example 1 1500 g of polystyrene resin pellets (4 mm x 1.8 mmφ) containing 5% (by weight) of carbon black were placed in a reaction vessel with an internal volume of 5, and the reaction vessel was charged with:
0.6% aqueous solution of dodecylbenzenesulfonic acid 2500
cc, methylene bisamide 2g, sodium pyrophosphate 20g, magnesium sulfate 24g, toluene 16
g and 4.5 g of dioctyl adipate, and while stirring, 270 g of butane and 30 g of propane were press-injected into the reaction vessel, and the contents were heated to 85°C for 2 hours.
The temperature rose to . 3 hours with the reaction vessel as it is
After incubating for minutes, the temperature of the contents was lowered to 30°C, and the butane and propane impregnated polystyrene resin beads were removed from the reaction vessel. Although 5% (by weight) of water was attached to the polystyrene resin beads, they were placed in a polystyrene container as they were without being dehydrated or dried, and were stored in a sealed container.
７日後に、ポリスチレン樹脂ビーズをポリエチ
レン容器から取り出し、スチームによつて30倍
（ml／ｇ）まで予備発泡し、予備発泡品を24時間
熟成した後、スチーム加熱により成形した。得ら
れた成形品は、黒色度に富み、またその外観も良
好であつた。 After 7 days, the polystyrene resin beads were taken out from the polyethylene container and pre-foamed to 30 times the volume (ml/g) using steam. The pre-foamed product was aged for 24 hours and then molded by steam heating. The obtained molded product had a high degree of blackness and also had a good appearance.
これとは別に、30日後にポリスチレン樹脂ビー
ズをポリスチレン容器から取り出し、前記と同様
にして、成形したが、得られた成形品は、前記と
同様に、黒色度に富み、その外観も良好であつ
た。 Separately, after 30 days, the polystyrene resin beads were taken out of the polystyrene container and molded in the same manner as above, but the molded product obtained was rich in blackness and had a good appearance as well. Ta.
実施例 ２
実施例１と同様にして得たブタンおよびプロパ
ンの含浸したポリスチレン樹脂ビーズを脱水機に
よつて脱水し、1.5％（重量）の水分の付着した
ポリスチレン樹脂ビーズを得た。このポリスチレ
ン樹脂ビーズを、乾燥することなく、そのままポ
リエチレン容器に入れ、密封して保管した。Example 2 Polystyrene resin beads impregnated with butane and propane obtained in the same manner as in Example 1 were dehydrated using a dehydrator to obtain polystyrene resin beads with 1.5% (by weight) of moisture attached. The polystyrene resin beads were directly placed in a polyethylene container without being dried, and stored in a sealed container.
30日後に、ポリスチレン樹脂ビーズをポリエチ
レン容器から取り出し、それぞれ実施例１と同様
にして、成形した。得られた成形品は、いずれも
黒色度に富み、その外観も良好であつた。 After 30 days, the polystyrene resin beads were removed from the polyethylene container and molded in the same manner as in Example 1. The molded products obtained were all rich in blackness and had a good appearance.
比較例 １
実施例１と同様にして得たブタンおよびプロパ
ンの含浸したポリスチレン樹脂ビーズを脱水機に
よつて脱水した後、５℃の冷風により乾燥し、付
着水分のないポリスチレン樹脂ビーズを得た。こ
のポリスチレン樹脂ビーズをそのままポリエチレ
ン容器に入れ、密封して保管した。Comparative Example 1 Polystyrene resin beads impregnated with butane and propane obtained in the same manner as in Example 1 were dehydrated using a dehydrator, and then dried with cold air at 5° C. to obtain polystyrene resin beads free of attached moisture. The polystyrene resin beads were directly placed in a polyethylene container, sealed and stored.
７日後および30日後に、ポリスチレン樹脂ビー
ズをポリエチレン容器から取り出し、それぞれ実
施例１と同様にして、成形した。７日後に取り出
したポリスチレン樹脂ビーズは、成形時に収縮を
生じ、そのために満足に成形することができなか
つた。30日後に取り出したポリスチレン樹脂ビー
ズは、成形することはできたが、その成形品は、
発泡したポリスチレン樹脂ビーズの境界面に白色
の境界面を生じていて、黒色度の乏しいものであ
つた。このことから７日後に取り出したポリスチ
レン樹脂ビーズの成形不能は、ブタンおよびプロ
パンの含浸したポリスチレン樹脂ビーズの熟成が
充分でなかつたことによると考えられる。 After 7 and 30 days, the polystyrene resin beads were removed from the polyethylene container and molded in the same manner as in Example 1, respectively. The polystyrene resin beads taken out after 7 days shrank during molding, and therefore could not be molded satisfactorily. The polystyrene resin beads taken out after 30 days were able to be molded, but the molded product was
A white boundary surface was formed at the boundary surface of the foamed polystyrene resin beads, and the blackness was poor. From this, it is thought that the inability to mold the polystyrene resin beads taken out after 7 days was due to insufficient maturing of the polystyrene resin beads impregnated with butane and propane.
本発明によつて保管したカーボンブラツクを含
有する黒色発泡性ポリスチレン系樹脂を成形、発
泡すると、成形性がよく、また黒色度の優れたポ
リスチレン系樹脂発泡体をつくることができる。
By molding and foaming a black foamable polystyrene resin containing carbon black stored according to the present invention, a polystyrene resin foam with good moldability and excellent blackness can be produced.
これに対して、付着水分の存在しない状態にお
いて、充分に熟成する期間よりも短かい期間の保
管をカーボンブラツクを含有する黒色発泡性ポリ
スチレン系樹脂を成形、発泡すると、ポリスチレ
ン系樹脂発泡体の内部に空洞ができたり、またポ
リスチレン系樹脂発泡体中のポリスチレン系樹脂
粒の境界に白色の面を生じ、黒色度の不充分な発
泡体を生成する。 On the other hand, if black foamable polystyrene resin containing carbon black is molded and foamed and stored for a period shorter than the period required for sufficient ripening in the absence of attached moisture, the inside of the polystyrene resin foam Cavities are formed in the polystyrene resin foam, and white surfaces are formed at the boundaries of the polystyrene resin particles in the polystyrene resin foam, resulting in a foam with insufficient blackness.
したがつて本発明の保管方法によると、カーボ
ンブラツクを含有する黒色発泡性ポリスチレン系
樹脂の熟成に要する期間を短縮することができる
のである。 Therefore, according to the storage method of the present invention, it is possible to shorten the period required for ripening the black foamable polystyrene resin containing carbon black.
Claims (1)
スチレン系樹脂を少なくとも0.5％（重量）の付
着水分の存在下に保存することを特徴とする黒色
発泡性ポリスチレン系樹脂の保管方法。 ２ カーボンブラツクを含有する黒色発泡性ポリ
スチレン系樹脂が、黒色発泡性ポリスチレン樹脂
ビーズであることを特徴とする特許請求の範囲第
１項に記載の黒色発泡性ポリスチレン系樹脂の保
管方法。 ３ カーボンブラツクを含有する黒色発泡性ポリ
スチレン系樹脂を、製造直後に脱水、乾燥するこ
となく、直ちに非透水性の容器に収容することを
特徴とする特許請求の範囲第１項または第２項に
記載の黒色発泡性ポリスチレン系樹脂の保管方
法。[Scope of Claims] 1. A method for storing black foamable polystyrene resin containing carbon black, which comprises storing the black foamable polystyrene resin in the presence of at least 0.5% (by weight) of attached moisture. 2. The method for storing black foamable polystyrene resin according to claim 1, wherein the black foamable polystyrene resin containing carbon black is black foamable polystyrene resin beads. 3. According to claim 1 or 2, the black expandable polystyrene resin containing carbon black is immediately stored in a water-impermeable container without being dehydrated or dried immediately after production. Storage method for black foamable polystyrene resin described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1179185A JPS61171746A (en) | 1985-01-26 | 1985-01-26 | Method for storing expandable black polystyrene resin containing carbon black |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1179185A JPS61171746A (en) | 1985-01-26 | 1985-01-26 | Method for storing expandable black polystyrene resin containing carbon black |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61171746A JPS61171746A (en) | 1986-08-02 |
| JPH0511133B2 true JPH0511133B2 (en) | 1993-02-12 |
Family
ID=11787735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1179185A Granted JPS61171746A (en) | 1985-01-26 | 1985-01-26 | Method for storing expandable black polystyrene resin containing carbon black |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61171746A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5008715A (en) * | 1987-06-11 | 1991-04-16 | Minolta Camera Kabushiki Kaisha | Copying machine allowing manual feed of copying paper |
| CN102858860B (en) * | 2010-03-30 | 2015-09-16 | 积水化成品工业株式会社 | Freezen protective foaminess composite resin particle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58111838A (en) * | 1981-12-24 | 1983-07-04 | Hitachi Chem Co Ltd | Conductive foamable styrene resin particle and preparation of same |
| JPS59217715A (en) * | 1983-05-25 | 1984-12-07 | Achilles Corp | Production of carbon-containing polystyrene resin |
-
1985
- 1985-01-26 JP JP1179185A patent/JPS61171746A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58111838A (en) * | 1981-12-24 | 1983-07-04 | Hitachi Chem Co Ltd | Conductive foamable styrene resin particle and preparation of same |
| JPS59217715A (en) * | 1983-05-25 | 1984-12-07 | Achilles Corp | Production of carbon-containing polystyrene resin |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61171746A (en) | 1986-08-02 |
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