JP3950980B2 - 発泡体の製造方法 - Google Patents
発泡体の製造方法 Download PDFInfo
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- JP3950980B2 JP3950980B2 JP2006542328A JP2006542328A JP3950980B2 JP 3950980 B2 JP3950980 B2 JP 3950980B2 JP 2006542328 A JP2006542328 A JP 2006542328A JP 2006542328 A JP2006542328 A JP 2006542328A JP 3950980 B2 JP3950980 B2 JP 3950980B2
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- resin
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- foamed
- particles
- flame retardant
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/22—After-treatment of expandable particles; Forming foamed products
- C08J9/224—Surface treatment
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/22—After-treatment of expandable particles; Forming foamed products
- C08J9/228—Forming foamed products
- C08J9/232—Forming foamed products by sintering expandable particles
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/06—Polystyrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2325/02—Homopolymers or copolymers of hydrocarbons
- C08J2325/04—Homopolymers or copolymers of styrene
- C08J2325/06—Polystyrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2461/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
原料には、すでに発泡剤の含浸などによる前処理がされ発泡剤を含有したポリスチレンビーズを原粒ビーズとして用いる。この原粒ビーズとしては、0.2mm以上1.0mm以下程度の直径である原径を有する市販のポリスチレンビーズの原粒である。
上述の原粒ビーズを目的の製品に応じて、所定の比率、例えば5倍から90倍程度あるいは20倍から100倍程度(好ましくは90倍)に予備発泡させて予備発泡済ビーズとする。すなわち、後述する被覆工程に先立って原粒ビーズを予備発泡させる。そして、予備発泡済ビーズは、製品化の安定性を維持するために、12時間から24時間程度(好ましくは20時間程度)熟成放置させて完成させた後に使用する。また、この予備発泡済ビーズは、できるだけ1週間以内に後述する成形工程にて消費させて、この予備発泡済ビーズ内の残存ガスの拡散によって大きな影響が出ないうちに使い切ってしまうとよい。
上述の多数の予備発泡済ビーズ中に、熱硬化性樹脂、硼素系無機化合物および難燃性無機化合物のそれぞれを、1:1あるいはそれぞれを単独として混合する。このとき、これら多数の予備発泡済ビーズにて製造される発泡スチロール製品1の難燃性の効果をより一層発揮させるためには、これら多数の予備発泡済ビーズ中に、この予備発泡済ビーズ中に混合した難燃性無機化合物に対して5質量%から20質量%程度の割合となるように難燃性材を併用して混合および攪拌して、所定の厚さの被覆層3を形成する。言い換えると、この予備発泡済ビーズに対して、熱硬化性樹脂、硼素系無機化合物および難燃性無機化合物の合計が5対1から1対5の比率となるように混合する。
上述の被覆工程にて被覆された多数の被覆予備発泡済ビーズの表面積ができるだけ大きくなるように、これら多数の被覆予備発泡済ビーズに風を当てて乾燥、すなわち風乾させながら、これら多数の被覆予備発泡済ビーズの一部を解砕させる。
上述の乾燥工程にて製造された単粒子化ビーズを、自動成形機あるいはブロック成形の金型内にエアーにて自動的に充填させる。この状態で、0.6kg/cm3から1kg/cm3程度の蒸気圧により、一般の発泡ポリスチレン樹脂(Expandable PolyStyrene:EPS)の成形方法と同じに、加熱してからバキューム冷却である真空冷却をして成形した後に脱型する。このとき、一般に発泡率の大きなものほど、加熱量および冷却時間が短縮される。
b レゾール樹脂(熱硬化性樹脂) 75PHR(予備発泡済ビーズに対し)
c フェノールスルホン酸(硬化促進剤) 7.5PHR(熱硬化性樹脂に対し)
d 硼酸(硼素系無機化合物) 30PHR(予備発泡済ビーズに対し)
e 水酸化アルミニウム(難燃性無機化合物) 30PHR(予備発泡済ビーズに対し)
f 赤リン(難燃性剤) 10PHR(硼素系無機化合物および難燃性無機化合物に対し)
b レゾール樹脂(熱硬化性樹脂) 90PHR(予備発泡済ビーズに対し)
c フェノールスルホン酸(硬化促進剤) 10PHR(熱硬化性樹脂に対し)
d 硼酸(硼素系無機化合物) 1PHR(予備発泡済ビーズに対し)
e 水酸化アルミニウム(難燃性無機化合物) 59PHR(予備発泡済ビーズに対し)
f 赤リン(難燃性剤) 15PHR(硼素系無機化合物および難燃性無機化合物に対し)
g メタノール 5PHR(熱硬化性樹脂に対し)
h アクリル樹脂エマルジョン(2.5PHRから3PHR)溶液 2PHR(予備発泡済ビーズに対し)
b レゾール樹脂(熱硬化性樹脂) 110PHR(予備発泡済ビーズに対し)
c フェノールスルホン酸(硬化促進剤) 10PHR(熱硬化性樹脂に対し)
d 硼酸(硼素系無機化合物) 35PHR(予備発泡済ビーズの35質量%)
e 水酸化アルミニウム(難燃性無機化合物) 35PHR(予備発泡済ビーズの35質量%)
f 赤リン(難燃性剤) 10PHR(硼素系無機化合物および難燃性無機化合物の7質量%)
g メタノール 5PHR(熱硬化性樹脂に対し)
h ニトリルブタジエンラバーエマルジョン3質量%水溶液 20PHR(予備発泡済ビーズに対し)
b レゾール樹脂(熱硬化性樹脂) 120PHR(予備発泡済ビーズに対し)
c トルエンスルホン酸(硬化促進剤) 9PHR(熱硬化性樹脂に対し)
d 水酸化アルミニウム(難燃性無機化合物) 80PHR(予備発泡済ビーズに対し)
e 硼酸(硼素系無機化合物) 10PHR(予備発泡済ビーズに対し)
f 雲母(難燃性無機材) 10PHR(予備発泡済ビーズに対し)
g 赤リン(難燃性剤) 5PHR(予備発泡済ビーズに対し)
b レゾール樹脂(熱硬化性樹脂) 150PHR(予備発泡済ビーズに対し)
c トルエンスルホン酸(硬化促進剤) 8.5PHR(硬化性樹脂に対し)
d 水酸化アルミニウム(難燃性無機化合物) 150PHR(予備発泡済ビーズに対し)
e 硼酸(硼素系無機化合物) 5PHR(予備発泡済ビーズに対し)
f 雲母(難燃性無機材) 20PHR(予備発泡済ビーズに対し)
g 赤リン(難燃性剤) 5PHR(予備発泡済ビーズに対し)
b レゾール樹脂(熱硬化性樹脂) 225PHR(予備発泡済ビーズに対し)
c トルエンスルホン酸(硬化促進剤) 8.5PHR(硬化性樹脂に対し)
d 水酸化アルミニウム(難燃性無機化合物) 225PHR(予備発泡済ビーズに対し)
e 硼酸(硼素系無機化合物) 10PHR(予備発泡済ビーズに対し)
f 雲母(難燃性無機材) 30PHR(予備発泡済ビーズに対し)
g 赤リン(難燃性剤) 10PHR(予備発泡済ビーズに対し)
2 粒子としての多孔性発泡樹脂粒子
3 混合層としての被覆層
Claims (2)
- 発泡によって多孔性に形成できる多数の粒子を予備発泡して多数の予備発泡済粒子とし、
これら多数の予備発泡済粒子に、難燃性無機材および熱硬化性樹脂とともに、赤リンおよびポリリン酸アンモニウムの少なくともいずれかである難燃性剤を混合してから乾燥および解砕して、これら多数の予備発泡済粒子それぞれの表面に前記難燃性無機材、熱硬化性樹脂および難燃性剤のそれぞれを含む混合層を形成し、
この混合層が表面に形成された多数の予備発泡済粒子を金型に充填し、
この金型に充填され前記混合層が表面に形成された多数の予備発泡済粒子に水蒸気を当てて本発泡させて所定の形状の発泡体を形成する発泡体の製造方法であって、
前記難燃性無機材は、難燃性無機粘度調整材で、
この難燃性無機調整材として雲母を用いる
ことを特徴とした発泡体の製造方法。 - 発泡によって多孔性に形成できる多数の粒子は、ポリスチレン樹脂粒子で、
熱硬化性樹脂は、フェノール樹脂および石炭酸樹脂の少なくともいずれか一方である
ことを特徴とした請求項1記載の発泡体の製造方法。
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US10676559B2 (en) | 2013-01-20 | 2020-06-09 | Sekisui Chemical Co., Ltd. | Flame-retardant urethane resin composition |
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