JPS63222815A - Manufacture of polyurethane foam - Google Patents
Manufacture of polyurethane foamInfo
- Publication number
- JPS63222815A JPS63222815A JP62057414A JP5741487A JPS63222815A JP S63222815 A JPS63222815 A JP S63222815A JP 62057414 A JP62057414 A JP 62057414A JP 5741487 A JP5741487 A JP 5741487A JP S63222815 A JPS63222815 A JP S63222815A
- Authority
- JP
- Japan
- Prior art keywords
- foaming
- polyurethane foam
- pressure
- chamber
- stock solution
- 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
- 229920005830 Polyurethane Foam Polymers 0.000 title claims abstract description 23
- 239000011496 polyurethane foam Substances 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 238000005187 foaming Methods 0.000 claims abstract description 43
- 239000011550 stock solution Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000006260 foam Substances 0.000 claims abstract description 6
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 229920002635 polyurethane Polymers 0.000 claims abstract description 4
- 239000004814 polyurethane Substances 0.000 claims abstract description 4
- 239000012948 isocyanate Substances 0.000 claims description 5
- 150000002513 isocyanates Chemical class 0.000 claims description 5
- 229920005862 polyol Polymers 0.000 claims description 5
- 150000003077 polyols Chemical class 0.000 claims description 5
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 2
- 239000004604 Blowing Agent Substances 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- 239000003054 catalyst Substances 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims description 2
- 239000003063 flame retardant Substances 0.000 claims description 2
- 239000003381 stabilizer Substances 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 239000012974 tin catalyst Substances 0.000 claims description 2
- 239000000049 pigment Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 12
- 238000006116 polymerization reaction Methods 0.000 abstract description 6
- 150000001336 alkenes Chemical class 0.000 abstract 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- 230000006837 decompression Effects 0.000 description 6
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012975 dibutyltin dilaurate Substances 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000005108 dry cleaning Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000004620 low density foam Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の技術分野］
本発明はポリウレタンフォームの製造方法に関し、特に
火災やフレオンガスによる環境汚染等の恐れのないポリ
ウレタンフォームを得る方法に関わる。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for producing polyurethane foam, and more particularly to a method for obtaining polyurethane foam without fear of fire or environmental pollution due to Freon gas.
［従来の技術と問題点］
周知の如く、ポリウレタンフォームは断熱性に優れてい
る為、重合反応熱が内部にこもり、反応熱は高くなれば
なる程この反応熱によりいわゆるスコーチ（焼けによる
変色）が大きくなる。[Prior art and problems] As is well known, polyurethane foam has excellent heat insulation properties, so the heat of polymerization reaction is trapped inside, and the higher the reaction heat, the more this reaction heat causes so-called scorch (discoloration due to burning). becomes larger.
ところで、ウレタンフオームの反応はポリオールのＯＨ
基とイソシアネートのＮＧＯ基、及びＨ２Ｏの０ｆ−Ｉ
ＩとイソシアネートのＮＣ０Ｉとの反応であるが、発泡
反応はＨ２Ｏとイソシアネートの反応によるＣＯ２ガス
のためであり、発泡倍率を上げるためには（換言すれば
、低密度フオームを得るためには）Ｈ２Ｏの量を多くす
る必要がある。従って、必然的に８２０と反応させるイ
ソシアネートの量も多くなるため重合反応熱は著しく高
くなり、火災発生の危険がある。このため、Ｈ２Ｏの添
加量はポリオール１００ｗｔ％に対し略５ｗｔ％程度が
限界である。勿論この場合でも反応熱によるスコーチは
大小の程度の差はあるが、発生する事が多く、発泡助剤
としてフレオン１１などの低沸点溶剤が併用される。By the way, the reaction of urethane foam is the OH of polyol.
group and NGO group of isocyanate, and Of-I of H2O
The foaming reaction is due to CO2 gas due to the reaction between H2O and isocyanate, and in order to increase the foaming ratio (in other words, to obtain a low density foam), H2O It is necessary to increase the amount of Therefore, the amount of isocyanate reacted with 820 will inevitably increase, and the heat of the polymerization reaction will become extremely high, creating a risk of fire. Therefore, the limit for the amount of H2O added is approximately 5 wt% relative to 100 wt% of the polyol. Of course, even in this case, scorch due to reaction heat is often generated, although there are differences in magnitude, and a low boiling point solvent such as Freon 11 is used as a foaming aid.
しかし、低沸点溶剤は単に反応熱によりガス化して発泡
すると、外部に揮散する。そして、このフレオンガスは
半導体等の部品洗浄、ウレタン形成時、ドライクリーニ
ング等の際使用されており、地球のオゾン層の周囲を囲
むように層を形成して地球からの放射熱を放出しない為
、大気の濃度を年々的３℃づつ上昇させているという報
告報告が発表されており、近年大きな環境問題となって
いる。However, when the low boiling point solvent simply gasifies and foams due to the heat of reaction, it evaporates to the outside. This Freon gas is used for cleaning parts such as semiconductors, forming urethane, dry cleaning, etc. It forms a layer surrounding the earth's ozone layer and does not emit radiant heat from the earth. It has become a major environmental problem in recent years, with reports showing that the atmospheric concentration is increasing by 3 degrees Celsius every year.
本発明は上記事情に鑑みてなされたもので、反応熱を高
くすることに起因するスコーチ現象の発生及び発泡倍率
を上げることに起因する火災の発生を防止するとともに
、フレオンによる環境汚染のないポリウレタンフォーム
の製造方法を提供することを目的とする。The present invention has been made in view of the above circumstances, and is designed to prevent the occurrence of scorch phenomenon caused by increasing the heat of reaction and the occurrence of fires caused by increasing the expansion ratio. The purpose of the present invention is to provide a method for manufacturing foam.
［問題点を解決するための手段］
本発明は、ポリオール、有機イソシアネート、発泡剤、
アミン触媒、錫触媒、整泡剤、＊ａ、充填剤、難燃剤等
を適宜組合わせてポリウレタン発泡原液を調整し、該発
泡原液を混合撹拌した後連続して走行する溝型コンベア
上に吐出して発泡させてポリウレタンフォルムを製造す
る方法において、少なくとも前記発泡原液の吐出から発
泡完了までを減圧雰囲気下で行なうことを要旨とする。[Means for solving the problems] The present invention provides a polyol, an organic isocyanate, a blowing agent,
A polyurethane foaming stock solution is prepared by appropriately combining an amine catalyst, a tin catalyst, a foam stabilizer, *a, a filler, a flame retardant, etc., and the foaming stock solution is mixed and stirred and then discharged onto a continuously running groove-type conveyor. In the method for producing polyurethane foam by foaming, the gist is that at least the process from discharging the foaming stock solution to the completion of foaming is performed under a reduced pressure atmosphere.
本発明において、少なくとも発泡原液の吐出から発泡完
了までを減圧雰囲気中でポリウレタンフォームの形成を
行なう手段の一つとしては、例えば発泡原液が流し込ま
れる凹型コンベア、前記コンベアの側部に取付けられサ
イドフェンス、コンベアの底部に載置される底紙、横紙
、ミキシングヘッド及び発泡原液を放出するノズル等の
発泡装置一式を減圧室内に設置する方法等が挙げられる
。In the present invention, one of the means for forming polyurethane foam in a reduced pressure atmosphere at least from the discharge of the foaming stock solution to the completion of foaming is, for example, a concave conveyor into which the foaming stock solution is poured, and a side fence attached to the side of the conveyor. , a method in which a complete set of foaming devices such as a bottom paper, horizontal paper, a mixing head, and a nozzle for discharging a foaming stock solution placed on the bottom of a conveyor is installed in a vacuum chamber.
本発明において、減圧処理は特に５０〜５００ｍｍＨＯ
の範囲で行なうのが好ましい。ここで、圧力が５０ｍｍ
Ｈｏより小さいと発泡により生ずる重合反応熱を十分外
部へ取出すことができず、本願の目的を果たすことがで
きない。一方、圧力が５００ｒｎｍＨａより大きいと、
真空度が高すぎて発泡バランスがくずれ、均一な特性を
もったポリウレタンフォームが得られない。また、減圧
している時間は、目的のポリウレタンフォームの密度、
特性によって適宜窓める。勿論発泡時に各種の平坦化装
置等を使用すれば、スケアラブが得られる。In the present invention, the reduced pressure treatment is particularly performed at 50 to 500 mm HO.
It is preferable to carry out the test within the range of . Here, the pressure is 50mm
If it is smaller than Ho, the heat of polymerization reaction generated by foaming cannot be sufficiently extracted to the outside, and the purpose of the present invention cannot be achieved. On the other hand, if the pressure is greater than 500rnmHa,
If the degree of vacuum is too high, the foaming balance will be disrupted, making it impossible to obtain polyurethane foam with uniform properties. In addition, the time of decompression depends on the density of the desired polyurethane foam,
Window as appropriate depending on characteristics. Of course, a square rub can be obtained by using various flattening devices during foaming.
本発明において、上記減圧室の幅及び長さはポリウレタ
ンフォームスラブの長尺、短尺により適宜設定すれば良
いが、一般的に長尺スラブを製造する場合は幅１〜２．
５ｍ、長さ３０〜８０ｍ程度で良い。In the present invention, the width and length of the decompression chamber may be set as appropriate depending on the long or short length of the polyurethane foam slab, but generally when manufacturing a long slab, the width is 1 to 2.
5m and a length of about 30 to 80m.
［作用］
本発明では、少なくとも前記発泡原液の吐出から発泡完
了までを減圧雰囲気下で行なうことを特徴とし、反応熱
を＾くすることに起因するスコーチ現象の発生及び発泡
倍率を上げることに起因する火災の発生を防止するとと
もに、フレオンによる環境汚染の問題も解消できる。[Function] The present invention is characterized in that at least the process from the discharge of the foaming stock solution to the completion of foaming is carried out under a reduced pressure atmosphere, thereby preventing the occurrence of scorch phenomenon caused by reducing the heat of reaction and increasing the foaming ratio. In addition to preventing the occurrence of fires, the problem of environmental pollution caused by freon can also be solved.
本発明において、ポリウレタンフォームの製造の際は、
減圧室内を目的の圧力まで減圧してから発泡原液を溝型
コンベア上に連続して吐出する。In the present invention, when producing polyurethane foam,
After reducing the pressure in the vacuum chamber to the target pressure, the foaming stock solution is continuously discharged onto a groove-shaped conveyor.
また、ポリウレタンフォームの重合反応による発泡ガス
（ＣＯ２）が連続して発生する為減圧室内の圧力が著し
く変化（高くなる）する時は、減圧弁により同じに減圧
する。Furthermore, when the pressure in the vacuum chamber changes significantly (increases) due to continuous generation of foaming gas (CO2) due to the polymerization reaction of polyurethane foam, the pressure is reduced to the same level using a pressure reducing valve.
［実施例］ 以下、本発明の一実施例を図を参照して説明する。[Example] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
ポリエーテルポリオール（分子１３０００．２官能）
１００重量部
８２０ ４．５重量部ノルマルエ
ヂルモノホリン ０．３重量部トリエチレンジアミン
０．０６重量部ジブチルチンジラウレート ０．
１２重１部シリコーン油 １，２重量部
トリレンジイソシアネート ５７．０１１部上記配合処
方からなるポリウレタン発泡原液を調整し、該発泡原液
を混合撹拌した後、下記のように連続式でポリウレタン
フォームを製造した。Polyether polyol (molecule 13000.2 functional) 100 parts by weight 820 4.5 parts by weight Normal edyl monophorin 0.3 parts by weight Triethylenediamine 0.06 parts by weight Dibutyltin dilaurate 0.
12 parts by weight Silicone oil 1.2 parts by weight Tolylene diisocyanate 57.011 parts A polyurethane foaming stock solution having the above formulation was prepared, and after mixing and stirring the foaming stock solution, polyurethane foam was produced in a continuous manner as shown below. did.
即ち、図に示す如く、溝型コンベア（コンベアベルト２
．サイドフェンス３等からなる）１、ノズル４、横紙５
、底紙６等の発泡装置一式を吸気弁７．減圧弁（脱気）
８を有した減圧室９内に設置した状態で、予め２００１
１Ｈｇに減圧した減圧室９内に設置しである溝型コンベ
ア上に連続的に吐出した。次に、発泡終了後そのまま５
分間保持し、空気を減圧室９内に入れて常圧にしてポリ
ウレタンフォームを製造した。なお、減圧室９内の溝型
コンベア１よりポリウレタンフォームを取出して一日放
置した後にカットして物理的特性を調べたところ、密度
１３．８Ｋａ／ｍ３ 、硬さ７゜１ＫＯ／：ｒｌＳ−引
張り強さ０．５２Ｋｏ／ｃ驕２、伸び１０２％となった
。That is, as shown in the figure, a groove type conveyor (conveyor belt 2
．． Consists of side fence 3, etc.) 1, nozzle 4, horizontal paper 5
, a complete foaming device such as the bottom paper 6 is inserted into the intake valve 7. Pressure reducing valve (deaeration)
2001 in advance while installed in a decompression chamber 9 having a
The mixture was continuously discharged onto a groove-type conveyor installed in a vacuum chamber 9 whose pressure was reduced to 1 Hg. Next, after completing the foaming process, continue for 5 minutes.
After holding for a minute, air was introduced into the vacuum chamber 9 to bring the pressure to normal pressure, producing polyurethane foam. The polyurethane foam was taken out from the groove conveyor 1 in the decompression chamber 9, left for one day, then cut and examined for its physical properties. It was found to have a density of 13.8 Ka/m3 and a hardness of 7°1KO/:rlS-tensile. The strength was 0.52 Ko/c2 and the elongation was 102%.
しかして、本発明によれば、発泡終了後一定時間減圧室
９内でポリウレタンフォームの減圧を行なう為、以下に
列挙する効果を有する。According to the present invention, since the polyurethane foam is depressurized within the decompression chamber 9 for a certain period of time after the completion of foaming, the following effects can be obtained.
（イ）発泡時に生じる重合反応熱が内部にこもらず、そ
の一部が外部に拡散されて引きだされるため、従来の様
にスコーチ現象や火災が発生することを防止できる。(a) Since the polymerization reaction heat generated during foaming is not trapped inside, but a portion of it is diffused and drawn out, it is possible to prevent the scorch phenomenon and fire from occurring as in the past.
（ロ）また、反応熱が外部に引出される際、全体に均一
に拡散されるため、熱が部分的に高くなることかなく、
一様な特性を有したポリウレタンフォームを得ることが
できる。(b) Also, when the reaction heat is extracted to the outside, it is uniformly diffused throughout the body, so the heat does not become high in some areas.
Polyurethane foams with uniform properties can be obtained.
（ハ）更に、減圧により従来のように発泡助剤としての
フレオンを用いることなく、発泡密度の高いポリウレタ
ンフォームを得ることができる。(c) Furthermore, by reducing the pressure, a polyurethane foam with a high foaming density can be obtained without using Freon as a foaming aid as in the conventional method.
従って、従来化じたフレオンの放出に起因する環境問題
を解決できる。Therefore, the environmental problems caused by conventional freon emissions can be solved.
なお、上記実施例では、溝型コンベア、ノズルなどの発
泡装置一式を減圧室内に設置して減圧を行なう場合につ
いて述べたが、これに限らず、少なくとも発泡原液の吐
出から発泡完了までを減圧雰囲気中で行なえば良い。In the above embodiment, a case was described in which a set of foaming devices such as a groove conveyor and a nozzle were installed in a vacuum chamber to reduce the pressure, but this is not the only option. It's better to do it inside.
［発明の効果］
以上詳述した如く本発明によれば、反応熱を高くするこ
とに起因するスコーチ現象の発生及び発泡倍率を、上げ
ることに起因する火災の発生を防止するとともに、フレ
オンによる環境汚染のないポリウレタンフォームの製造
方法を提供できる。[Effects of the Invention] As detailed above, according to the present invention, the occurrence of the scorch phenomenon caused by increasing the reaction heat and the occurrence of fire caused by increasing the foaming ratio can be prevented, and the environment caused by Freon can be prevented. A method for producing polyurethane foam without contamination can be provided.
図は、本発明の一実施例に係るポリウレタンフォームの
製造方法の説明図である。
１・・・溝型コンベア、２・・・コンベアベルト、３・
・・サイドフェンス、４・・・ノズル、５・・・横紙、
６・・・底紙、７・・・吸気弁、８・・・減圧弁、９・
・・減圧室。The figure is an explanatory diagram of a method for manufacturing polyurethane foam according to an embodiment of the present invention. 1...Groove conveyor, 2...Conveyor belt, 3.
...Side fence, 4...Nozzle, 5...Horizontal paper,
6... Bottom paper, 7... Intake valve, 8... Pressure reducing valve, 9...
...Decompression chamber.
Claims (1)
、錫触媒、整泡剤、顔料、充填剤、難燃剤等を適宜組合
わせてポリウレタン発泡原液とし、該発泡原液を混合撹
拌した後連続して走行する溝型コンベア上に吐出して発
泡させてポリウレタンフォームを製造する方法において
、少なくとも前記発泡原液の吐出から発泡完了までを減
圧雰囲気下で行なうことを特徴とするポリウレタンフォ
ームの製造方法。Polyol, organic isocyanate, blowing agent, amine catalyst, tin catalyst, foam stabilizer, pigment, filler, flame retardant, etc. are appropriately combined to form a polyurethane foaming stock solution, and after mixing and stirring the foaming stock solution, a groove that runs continuously. A method for producing polyurethane foam by discharging it onto a mold conveyor and foaming, the method comprising at least performing the steps from discharging the foaming stock solution to completion of foaming under a reduced pressure atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62057414A JPS63222815A (en) | 1987-03-12 | 1987-03-12 | Manufacture of polyurethane foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62057414A JPS63222815A (en) | 1987-03-12 | 1987-03-12 | Manufacture of polyurethane foam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63222815A true JPS63222815A (en) | 1988-09-16 |
Family
ID=13054989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62057414A Pending JPS63222815A (en) | 1987-03-12 | 1987-03-12 | Manufacture of polyurethane foam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63222815A (en) |
-
1987
- 1987-03-12 JP JP62057414A patent/JPS63222815A/en active Pending
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