JPH0784016B2 - Method for producing batch-type polyurethane foam - Google Patents
Method for producing batch-type polyurethane foamInfo
- Publication number
- JPH0784016B2 JPH0784016B2 JP62057415A JP5741587A JPH0784016B2 JP H0784016 B2 JPH0784016 B2 JP H0784016B2 JP 62057415 A JP62057415 A JP 62057415A JP 5741587 A JP5741587 A JP 5741587A JP H0784016 B2 JPH0784016 B2 JP H0784016B2
- Authority
- JP
- Japan
- Prior art keywords
- foaming
- polyurethane foam
- heat
- type polyurethane
- pressure
- 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
- 229920005830 Polyurethane Foam Polymers 0.000 title claims description 16
- 239000011496 polyurethane foam Substances 0.000 title claims description 16
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000005187 foaming Methods 0.000 claims description 30
- 230000006837 decompression Effects 0.000 claims description 9
- 239000012948 isocyanate Substances 0.000 claims description 7
- 150000002513 isocyanates Chemical class 0.000 claims description 7
- 239000006260 foam Substances 0.000 claims description 6
- 229920005862 polyol Polymers 0.000 claims description 5
- 150000003077 polyols Chemical class 0.000 claims description 5
- 239000011550 stock solution Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 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
- 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
- 239000004088 foaming agent Substances 0.000 claims description 2
- 239000000049 pigment Substances 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims description 2
- 239000003381 stabilizer Substances 0.000 claims description 2
- 239000012974 tin catalyst Substances 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 description 11
- 238000003912 environmental pollution Methods 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 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
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 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 2
- ZXHZWRZAWJVPIC-UHFFFAOYSA-N 1,2-diisocyanatonaphthalene Chemical compound C1=CC=CC2=C(N=C=O)C(N=C=O)=CC=C21 ZXHZWRZAWJVPIC-UHFFFAOYSA-N 0.000 description 1
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 1
- HVCNXQOWACZAFN-UHFFFAOYSA-N 4-ethylmorpholine Chemical compound CCN1CCOCC1 HVCNXQOWACZAFN-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 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
- 239000012975 dibutyltin dilaurate Substances 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000005108 dry cleaning Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000004620 low density foam Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229920002545 silicone oil Polymers 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)
Description
【発明の詳細な説明】 ［発明の技術分野］ 本発明はバッチ式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に恐れの
ないポリウレタンフォームを得る方法に関わる。Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a method for producing a batch-type polyurethane foam, and more particularly to a method for obtaining a polyurethane foam that is free from fear of environmental pollution such as fire or 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, since polyurethane foam has excellent heat insulating properties, the heat of polymerization stays inside and the higher the heat of reaction, the more so-called scorch (discoloration due to burning). Grows larger.
ところで、ウレタンフォームの反応はポルオールのOH基
とイソシアネートのNCO基，及びH2OのOH基とイソシアネ
ートのNCO基との反応であるが、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、低密度フォームを得る
ためには）H2Oの量を多くする必要がある。従って、必
然的にH2O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。Incidentally, urethane foam reaction OH groups to NCO groups of the isocyanate of Poruoru, and is a reaction of the OH groups to NCO groups of the isocyanate of H 2 O, the foaming reaction is CO 2 gas by reaction between H 2 O and isocyanate Therefore, in order to increase the expansion ratio (in other words, to obtain a low-density foam), it is necessary to increase the amount of H 2 O. Therefore, the amount of isocyanate that reacts with H 2 O inevitably increases, and the heat of polymerization reaction becomes extremely high, which poses a risk of fire. Therefore, the amount of H 2 O added is limited to about 5 wt% with respect to 100 wt% of the polyol. Of course, even in this case, the scorch due to the heat of reaction varies in magnitude, but it often occurs, and a low boiling point solvent such as Freon 11 is used together 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、大気の温度を年々約30℃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 is simply gasified by reaction heat and foamed, it is volatilized to the outside. This Freon gas is used for cleaning parts such as semiconductors, for forming urethane, for dry cleaning, etc. Since a layer is formed to surround the ozone layer of the earth and does not emit radiant heat from the earth, A report has been published that the atmospheric temperature is increasing by about 30 ° C each year, which has become a big environmental problem in recent years.
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バッチ式ポリウレタ
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 prevents the occurrence of a scorch phenomenon caused by increasing the reaction heat and the occurrence of fire caused by increasing the expansion ratio, batch without environmental pollution by freon An object of the present invention is to provide a method for producing a polyurethane 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、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、これを混
合撹拌する工程と、この発泡原液を発泡容器内に吐出し
て発泡させる工程と、発泡完了後に減圧室にて所定時間
50mmHg以上の圧力で減圧した後常圧に戻す工程とを具備
することを要旨とする。[Means for Solving Problems] The present invention provides a polyol, an organic isocyanate, a foaming agent,
A step of mixing and stirring a polyurethane foaming stock solution by appropriately combining an amine catalyst, a tin catalyst, a foam stabilizer, a pigment, a filler, a flame retardant, etc., and a step of discharging the foaming stock solution into a foaming container for foaming. And after the foaming is completed, the decompression chamber is operated for a predetermined time
The gist is to provide a step of reducing the pressure to 50 mmHg or more and then returning to normal pressure.
本発明において、ポルオールは官能基数が２〜６官能、
分子量が400〜15000のポリエーテルポリオールが好まし
い。また、有機イソシアネートとしては、トリレンジイ
ソシアネート、4,4′ジフェニルメタンジイソシアネー
ト、ナフタレンジイソシアネート等一般に使用されてい
るものが挙げられる。In the present invention, polool has 2 to 6 functional groups,
Polyether polyols having a molecular weight of 400 to 15000 are preferred. Examples of the organic isocyanate include tolylene diisocyanate, 4,4 ′ diphenylmethane diisocyanate, naphthalene diisocyanate and the like which are commonly used.
本発明において、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、特性によって適宜定める。In the present invention, the time during which the pressure is reduced is appropriately determined depending on the density and characteristics of the target polyurethane foam.
本発明において、減圧処理は特に50〜500mmHgの範囲で
行うのが好ましい。ここで、圧力が50mmHgより小さい
と、発泡のより生ずる重合反応熱を十分外部に取出すこ
とができず、本願の目的を果たすことができない。In the present invention, the depressurization treatment is particularly preferably performed in the range of 50 to 500 mmHg. Here, if the pressure is less than 50 mmHg, the heat of polymerization reaction caused by foaming cannot be sufficiently extracted to the outside, and the object of the present application cannot be achieved.
［作用］ 本発明は、発泡原液を発泡容器内に吐出して発泡させた
後、減圧室にて所定時間減圧した後常圧に戻すバッチ式
のもので、減圧により重合反応熱が内部にこもらず全体
に拡散されると共に一部の熱はポリウレタンフォームの
外部に引出されるため、従来の如く反応熱を高くするこ
とを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。[Operation] The present invention is a batch type in which the foaming undiluted solution is discharged into the foaming container for foaming, and then decompressed in the decompression chamber for a predetermined time and then returned to normal pressure. Instead, it is diffused throughout and part of the heat is drawn to the outside of the polyurethane foam, so the scorch phenomenon is caused by increasing the reaction heat and the fire is caused by increasing the foaming ratio. It also prevents the problem of environmental pollution due to freon.
［実施例］ 以下、本発明の一実施例を図を参照して説明する。Embodiment An embodiment of the present invention will be described below with reference to the drawings.
ポリエーテルポリオール（分子量）3000,3官能） 100
重量部 H2O 6.0 重量部 ノルマルエチルモルホリン 0.5 重量部 トリエチルジアミン 0.08重量部 ジブチルチンジラウレート 0.3 重量部 シリコーン油 1.5 重量部 トリレンジイソシアネート 72.0 重量部 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、下記のようにしてポリウ
レタンフォームを製造した。Polyether polyol (molecular weight) 3000,3 functional) 100
Parts by weight H 2 O 6.0 parts by weight normal ethylmorpholine 0.5 parts by weight triethyldiamine 0.08 parts by weight dibutyltin dilaurate 0.3 parts by weight silicone oil 1.5 parts by weight tolylene diisocyanate 72.0 parts by weight
The foaming stock solution was mixed and stirred, and then a polyurethane foam was produced as follows.
即ち、第１図に示す如く、上記発泡原液を予め減圧室１
内に設置した発泡槽２内に減圧室１の導入口1a,発泡槽
２の導入口2aを通して吐出し、発泡させてポリウレタン
フォームを製造した。That is, as shown in FIG.
A polyurethane foam was manufactured by discharging the foam into a foaming tank 2 installed therein through an inlet 1a of the decompression chamber 1 and an inlet 2a of the foaming tank 2 to cause foaming.
次に、発泡完了後に減圧室１の吸気弁３を接続させた真
空ポンプ）により、減圧室１を200mmHg吸引した。この
減圧状態を15分間継続した後、空気に入れて常圧した。
次いで、減圧室１の横開き扉４を開け、コロ５を用いて
発泡槽２を外に出した後、発泡槽２からポリウレタンフ
ォームを出し一日放置した。そして、これをカットして
内部のスコーチ状態を確認したところ、スコーチはほと
んど認められなかった。また、密度は15.5Kg/m3であっ
た。なお、図中の６はは減圧弁、７は発泡槽２の扉、８
は減圧室１の上下可能は扉である。Next, after the completion of foaming, the decompression chamber 1 was sucked by 200 mmHg by a vacuum pump to which the suction valve 3 of the decompression chamber 1 was connected. After this reduced pressure state was continued for 15 minutes, it was put into air and atmospheric pressure was applied.
Next, the side opening door 4 of the decompression chamber 1 was opened, the foaming tank 2 was taken out using the roller 5, and then the polyurethane foam was taken out from the foaming tank 2 and left for one day. Then, when this was cut and the scorch state inside was confirmed, scorch was hardly observed. The density was 15.5 Kg / m 3 . In the figure, 6 is a pressure reducing valve, 7 is a foam tank 2 door, and 8
Is a door that can move the decompression chamber 1 up and down.
しかして、本発明によれば、発泡終了後、ポリウレタン
フォームを発泡槽２内に保持した状態で一定時間減圧室
１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, however, after the foaming is completed, the polyurethane foam is depressurized in the decompression chamber 1 for a certain period of time while being held in the foaming tank 2, so that 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。(B) The heat of the polymerization reaction generated during foaming does not stay inside, and a part of it is diffused outside and drawn out, so that 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がなく、
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) In addition, when the reaction heat is drawn to the outside, the heat is not evenly increased because it is uniformly diffused throughout.
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、発泡倍率の高いポリウレタ
ンフォームを得ることができる。従って、従来生じたフ
レオンの放出に起因する環境問題を解決できる。(C) Furthermore, by reducing the pressure, a polyurethane foam having a high expansion ratio can be obtained without using Freon as a foaming aid as in the conventional case. Therefore, it is possible to solve the environmental problem caused by the emission of freon which has conventionally occurred.
ちなみに、実施例の減圧処理を施さず一日放置したポリ
ウレタンフォームをカットしたところ、内部にスコーチ
が発生していた。また、この密度は15.5Kg/m3であっ
た。By the way, when the polyurethane foam that had been left for one day without being subjected to the reduced pressure treatment of the example was cut, scorch was generated inside. The density was 15.5 Kg / m 3 .
［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バッチ式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 described in detail above, according to the present invention, it is possible to prevent the occurrence of a scorch phenomenon caused by increasing reaction heat and the occurrence of fire caused by increasing a foaming ratio, and to prevent environmental pollution due to freon. It is possible to provide a method for producing a batch-type polyurethane foam that does not have any type.
図は本発明の一実施例に係るバッチ式タンフォームの製
造方法の説明図である。 １……減圧室、２……発泡槽、３……吸気弁、４……横
開き扉、５……コロ、６……減圧弁、7,8……扉。The figure is an explanatory view of a method for manufacturing a batch type tan foam according to an embodiment of the present invention. 1 ... Pressure reducing chamber, 2 ... Foaming tank, 3 ... Intake valve, 4 ... Side opening door, 5 ... Roller, 6 ... Pressure reducing valve, 7,8 ... Door.
Claims (1)
剤、アミン触媒、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、これ
を混合撹拌する工程と、この発泡原液を発泡容器内に吐
出して発泡させる工程と、発泡完了後に減圧室にて所定
時間50mmHg以上の圧力で減圧した後常圧に戻す工程とを
具備することを特徴とするバッチ式ポリウレタンフォー
ムの製造方法。1. A step of mixing and stirring a polyurethane foaming stock solution by appropriately combining a polyol, an organic isocyanate, a foaming agent, an amine catalyst, a tin catalyst, a foam stabilizer, a pigment, a filler, a flame retardant and the like, and mixing and stirring the same. A batch-type polyurethane foam characterized by comprising a step of discharging a raw foaming solution into a foaming container for foaming, and a step of decompressing at a pressure of 50 mmHg or more for a predetermined time in a decompression chamber after completing the foaming and then returning to normal pressure. Manufacturing method.
Priority Applications (12)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62057415A JPH0784016B2 (en) | 1987-03-12 | 1987-03-12 | Method for producing batch-type polyurethane foam |
| CA000541369A CA1290895C (en) | 1986-12-25 | 1987-07-06 | Method and an apparatus for producing polyurethane foam |
| US07/070,774 US4988271A (en) | 1986-12-25 | 1987-07-07 | Apparatus for producing polyurethane foam |
| AU75357/87A AU608520B2 (en) | 1986-12-25 | 1987-07-08 | A method and an apparatus for producing polyurethane foam |
| TR52187A TR23638A (en) | 1986-12-25 | 1987-07-10 | A PROCEDURE AND DEVICE FOR POLIUERETAN KOEPUEK STABLE |
| SU874202955A RU1797573C (en) | 1987-03-12 | 1987-07-10 | Method for manufacture of plates from low-density polyurethane foam |
| KR1019870007469A KR910000312B1 (en) | 1986-12-15 | 1987-07-11 | Method and apparatus for producing polyurethane foam |
| EG40887A EG18673A (en) | 1986-12-25 | 1987-07-12 | A batch type foaming apparatus for producing urethane foam slab. T |
| CN87104799A CN1020560C (en) | 1986-12-25 | 1987-07-13 | Method and apparatus for producing low density polyurethane foam |
| AT87110096T ATE81065T1 (en) | 1986-12-25 | 1987-07-13 | METHOD AND DEVICE FOR PRODUCTION OF POLYURETHANE FOAM. |
| EP87110096A EP0273099B1 (en) | 1986-12-25 | 1987-07-13 | A method and an apparatus for producing polyurethane foam |
| DE8787110096T DE3782019T2 (en) | 1986-12-25 | 1987-07-13 | METHOD AND DEVICE FOR PRODUCING POLYURETHANE FOAM. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62057415A JPH0784016B2 (en) | 1987-03-12 | 1987-03-12 | Method for producing batch-type polyurethane foam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63222818A JPS63222818A (en) | 1988-09-16 |
| JPH0784016B2 true JPH0784016B2 (en) | 1995-09-13 |
Family
ID=13055019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62057415A Expired - Lifetime JPH0784016B2 (en) | 1986-12-15 | 1987-03-12 | Method for producing batch-type polyurethane foam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0784016B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112142939B (en) * | 2020-10-21 | 2022-06-10 | 惠彩材料科技(苏州)有限公司 | Mixed foaming method of polyurethane |
-
1987
- 1987-03-12 JP JP62057415A patent/JPH0784016B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63222818A (en) | 1988-09-16 |
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