CN1621429A - Combined polyol for polyisocyanurate foam - Google Patents

Combined polyol for polyisocyanurate foam Download PDF

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Publication number
CN1621429A
CN1621429A CN200410067142.6A CN200410067142A CN1621429A CN 1621429 A CN1621429 A CN 1621429A CN 200410067142 A CN200410067142 A CN 200410067142A CN 1621429 A CN1621429 A CN 1621429A
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China
Prior art keywords
polyol
polyisocyanurate foam
foam according
combined
combined polyol
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Granted
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CN200410067142.6A
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Chinese (zh)
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CN100523040C (en
Inventor
张�杰
陆伟
唐伟源
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Covestro Deutschland AG
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Bayer China Ltd
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Abstract

The polyol composition for polyisocyanurate foam consists of: polyester polyols based on aromatic acid anhydride 40-70 wt%; polyethylene/propylene oxide polyether polyols based on fatty amine, fatty diamine or fatty polyamine 0-10 wt%; compound containing active hydrogen atom 0-25 wt%, liquid organic fire retardant 14-25 wt%, water 1-3 wt%, catalyst 2-4.5 wt%, and supplementary material and/or additives 2-5 wt%. The hard foam prepared through one-step process has homogeneous and fine cells, and has the excellent performances in electric insulation, light weight, sound isolation, chemical corrosion resistance, etc. similar to those of PUR foam as well as pressure strength, size stability, heat insulation, flame resistance, low burning smoke amount, etc. superior to PUR foam. The present invention may be used in heat insulating material and sandwiched composite material with relatively high temperature requirement.

Description

Combined polyol for polyisocyanurate foam
Technical field
What the present invention relates to is a kind of polyvalent alcohol that is used for the foam materials field, particularly a kind of combined polyol for polyisocyanurate foam.
Background technology
Since generating this method of hard polyurethane foams by organic isocyanate and combination polyol reaction in the presence of the whipping agent and being established, hard polyurethane foams (PUR) is little because of its thermal conductivity, specific tenacity is high, the characteristics of in light weight, resistance to chemical attack, has been subjected in material fields such as building, insulation, transportation, insulation more and more using and paying close attention to.But, common PUR rigid foam if for a long time under high temperature or severe cold environment yielding and ultimate compression strength can descend, range of application is restricted.And as a kind of organic polymer material, the PUR rigid foam is the same with other organism to exist incendive objective fact in flame.To relating to the flame retardant resistance of materials such as building, industry, transportation, domestic life in different use occasions, country has proposed strict standard and has implemented criterion.
" urethane foam " second edition Fang Yusheng, Zhu Lvmin etc. write, and the 458th page, have described the fire retardant research application that is applicable to hard polyurethane foams at present and mainly have been summarised as: additive flame retardant and reactive flame retardant.This two based flame retardant plays inhibition foamy combustionvelocity because of containing flame retardant resistance element phosphor and/or halogen.But the foam that contains above-mentioned two based flame retardants exists significant disadvantages, because the phosphorous or halogen element compound of volatility escapes in the fireworks, smog is rolled up and with poisonous irritant gas when promptly in a single day foam burns.Smog has reduced visibility, and delay the crowd escape the inferno, toxic gas can stimulate the people respiratory system, make the people poison, lose consciousness, and this causes personnel death's major cause just in fire failure.Improve the stability of PUR rigid foam and the problem that the flame retardant resistance technology has become scientific research personnel's growing interest.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, provide a kind of poly-isocyanurate (PIR) porous plastics with making up polyvalent alcohol.Make the low-smoke of its rigid foam that makes when possessing conventional P UR foam premium properties and have simultaneously better dimensional stability, thermotolerance, flame resistant penetrance and foam burning again concurrently.
The present invention is achieved by the following technical solutions, and weight percentages of components of the present invention is: based on the polyester polyol 40~70% of aromatic anhydride, based on aliphatic series single-, two-or the polyethylene oxide/propylene oxide polyether glycol 0~10% of polyamines, the compound 0~25% that contains reactive hydrogen atom, liquid organic fire-retardant 14~25%, moisture 1~3%, catalyzer 2~4.5%, subsidiary material and/or additive: 2~5%.
Described polyester polyol based on aromatic anhydride is to form with aromatic anhydride and polyvalent alcohol polycondensation, and aromatic anhydride comprises: Tetra hydro Phthalic anhydride, phthalic acid, m-phthalic acid or its acid anhydride, preferred Tetra hydro Phthalic anhydride.
Described polyester polyol molecular-weight average is 200~700, and functionality is 2-8.The polyvalent alcohol that is suitable for has: ethylene glycol (EG), propylene glycol (PG), glycol ether (DEG), butyleneglycol, glycerol, hexanetriol, TriMethylolPropane(TMP), tetramethylolmethane, sorbyl alcohol etc.With the alcohols that has three-functionality-degree is good, can play the intensity and the flame resistant effect that improve rigid foam.Can use less or, reduce production costs in the combination polyvalent alcohol without fire retardant.
Described single based on aliphatic series, two-or polyamines polyether glycol, be with aliphatic series single-, two-or polyamines be initiator, by with oxyalkylene hydro carbons such as oxyethane, propylene oxide, oxybutylene, oxidation dodecylene or Styrene oxide 98min., preferred propylene oxide or oxyethane, addition polymerization makes polyether glycol.
Described polyether glycol molecular-weight average is 100~300, wherein aliphatic single, two-or polyamines mainly comprise: quadrol, diethylenetriamine, thanomin, diethanolamine, trolamine, N-methyl-or N-ethyldiethanolamine, 1,3-propylene diamine, 1,3-or 1,4-butanediamine or 1,2-, 1,3-, 1,4-, 1,5-or 1, the oligopolymer of 6-hexamethylene-diamine, quadrol, the oligopolymer of quadrol comprises: diethylenetriamine, Triethylenetetramine (TETA) or penten.
Described polyether glycol preferably is that initiator and weight percent are 70~100 1,2 epoxy prapane and 0~30 oxyethane mixture addition polymerization with the quadrol.
Hydrogen atom, molecular-weight average that the described compound that contains reactive hydrogen atom refers to contain at least 2 energy and isocyanate-reactive are 60~500, the polyvalent alcohol of functionality in 3~8 scopes.Mainly comprise ethylene glycol, glycol ether, propylene glycol, glycerine, tetramethylolmethane or polyhydroxy-alcohols such as sucrose, sorbyl alcohol.
Described liquid organic fire-retardant is the organic compound that trichlorine propyl phosphate, trichloroethyl phosphate contain haloid element or phosphoric.Comprise: inferior adjacent triphenyl phosphate ester (TPP), tricresyl phosphate (1-chloro-2-sec.-propyl) ester (TCPP), triethyl phosphate (TEP).Preferred TCPP, TEP.
The described liquid organic compound that contains haloid element or phosphoric, the PIR foaming system can reach high flame resistance and low-smoke, if but can add that some are phosphorous/or halogen element, gained foamy flame retardant resistance will be better, and the amount of being fuming during burning can not rise.
Described moisture further limits its weight percent and is: 0.5~2.0%.
Described catalyzer can promote urethane and the reaction of poly-isocyanuric acid simultaneously.What be suitable for has: aminated compounds, contain the isoionic organic alkali metal salt of potassium sodium, metal organic monoacid salt, quaternary ammonium salt compound, organic basic compound.Wherein with: 2,4,6-three (dimethylamino methyl) phenol, 2-(N, the N dimethylamine ylmethyl) phenol, N, N-diethyl cyclohexylamine N, N ', N " symmetrical six piperazines of-three (dimethyl amido propyl group), N; N-dimethyl ethylenimine, N, N-dimethylethanolamine, N-methylmorpholine, N-ethylmorpholine, two (dimethyl aminoethyl) ether, trolamine, N methyldiethanol amine, Potassium ethanoate, sodium-acetate etc. are preferred.Above catalyzer can singlely use, and also can mix use, improves catalytic effect.Serve as preferred with aminated compounds and metal organic monoacid saline admixture among the present invention.
Described optional subsidiary material and/or additive refer to suds-stabilizing agent or use pigment, tinting material, antiager, softening agent or have mildew-resistant and the material of fungistatic effect, perhaps use filler, as barium sulfate, tripoli, carbon black or whitening agent.Wherein suds-stabilizing agent is the known polysiloxane compounds of some technician.
The present invention need not to change the rigid foam somatocyte fine and even that adopts the single stage method foaming to make under production unit and the process condition, has the characteristics that make its low-smoke when multiple premium propertiess such as having the insulation of conventional P UR foam, lightweight, sound insulation, resistance to chemical attack concurrently also has than the better ultimate compression strength of PUR foams, dimensional stability and thermal insulation, flame resistant penetrability and burning simultaneously in the time of these two kinds of segmented structure of carbamate and isocyanuric acid ester.Therefore PIR system porous plastics can satisfy heat-insulating material or the sandwich composite board material that temperature is had higher service requirements.System of the present invention is applicable to the adiabatic heat-insulation or the lagging material of oil tank, transition pipeline pipeline outside.
Embodiment
Provide four specific embodiments in conjunction with content of the present invention, but the present invention is not only for therewith.All marks by weight among the embodiment.
The raw material that relates among the embodiment has:
1. combination polyol blends:
The molecular weight that forms with o-2 potassium acid acid anhydride and polyvalent alcohol polycondensation is 300 polyester polyol; It with the molecular weight of quadrol initiator poly(propylene oxide)/epoxidized polyether polyvalent alcohol of 200; The compound that contains reactive hydrogen atom: glycerine; Fire retardant: trichlorine propyl phosphate (TCPP); Catalyzer: containing metal potassium or sodium ion organic monoacid salt/pair (dimethyl aminoethyl) ether=(0~0.3)/(1~4); Water; Subsidiary material and/or additive: suds-stabilizing agent.
2. with the component of the supporting reaction of aforesaid combination polyol blends: organic multiple isocyanate and whipping agent.
Organic multiple isocyanate is rough diphenylmethanediisocyanate (thick MDI).This thick MDI composition comprises 2,4 '-diphenylmethanediisocyanate (2,4 '-MDI), 4,4 '-diphenylmethanediisocyanate (4,4 '-MDI), with 2, three kinds of isomer mixtures of 2 '-MDI.The trade mark that the organic multiple isocyanate composition that uses among the present invention is produced as Bayer company is the thick MDI of 44V20L, and its NCO content is: 31.5%.
Isocyanic ester and polyvalent alcohol two composition weight are approaching in different and traditional (PUR) foaming system, and (PIR) isocyanic ester is a main raw material in the foaming system, and organic multiple isocyanate parts by weight/polyol blends parts by weight should be less than 1.7 among the present invention.
Mainly comprise as indispensable whipping agent in combination polyvalent alcohol and the different hydrogen acid ether foaming process: water, fluoro trichloromethane (F-11), dichlorotrifluoroethane (HCFC-123) or trifluorotrichloroethane lower boiling halohydrocarbon such as (HCFC-141b).A preferred trifluorotrichloroethane (HCFC-141b) cooperates combination polyol blends of the present invention and the foaming of above-mentioned organic multiple isocyanate, can obtain the foam of low heat conductivity.Foaming agents content is counted 25~45 parts for good with 100 parts of weight of combination polyol blends.
Combination polyvalent alcohol weight percent Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4
Polyester polyol based on aromatic anhydride 70 ?55 ?50 ?40
Aliphatic series is single-, two-or polyamines polyether glycol 10 ?5 ?0 ?0
The compound that contains reactive hydrogen atom 0 ?12.5 ?20 ?25
Liquid organic fire-retardant 14 ?20 ?19.5 ?25
Moisture 1.0 ?1.4 ?2.0 ?3
Catalyzer 3.0 ?2.6 ?4.5 ?2.0
Subsidiary material and/or additive 2.0 ?3.5 ?4.0 ?5.0
With combination polyvalent alcohol supporting reactive component:
Whipping agent: (HCFC-141b) ????30 ????36 ????27 ????25
Organic multiple isocyanate: 44V20L ????190 ????184 ????170 ????175
The beneficial effect that above-mentioned three embodiment can obtain and the contrast table of regular convention formula effect:
Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Regular convention formula
Nuclear core density (Kg/m 3) 38.7 ?38.1 ?38.7 ?38.5 ?36.5
Thermal conductivity (mW/mK) 19.8 ?20.3 ?21.2 ?21.3 ?21.8
During ultimate compression strength 10% stress (Mpa) Parallel and ascent direction 0.24 ?0.24 ?0.18 ?0.18 ?0.19
Vertical and ascent direction 0.23 ?0.21 ?0.16 ?0.16 ?0.15
Dimensional stability volume change (%) 48hrs,-30℃ -0.28 ?-0.20 ?-0.25 ?-0.26 ?-0.80
48hrs,100℃ +0.79 ?+0.65 ?+0.70 ?+0.72 ?3.17
Rate of closed hole (%) 97.34 ?98.62 ?96.47 ?96.53 ?95.43
Water-intake rate (100cm 2/g) 1.90 ?1.87 ?2.62 ?2.63 ?2.82
Oxygen index (%) 28.0 ?27.4 ?27.0 ?26.9 ?<26

Claims (10)

1, a kind of combined polyol for polyisocyanurate foam, it is characterized in that weight percentages of components is: based on the polyester polyol 40~70% of aromatic anhydride, single based on aliphatic series, two-or the polyethylene oxide/propylene oxide polyether glycol 0~10% of polyamines, the compound 0~25% that contains reactive hydrogen atom, liquid organic fire-retardant 14~25%, moisture 1~3%, catalyzer 2~4.5%, subsidiary material and/or additive: 2~5%.
2, combined polyol for polyisocyanurate foam according to claim 1, it is characterized in that, described polyester polyol based on aromatic anhydride is with Tetra hydro Phthalic anhydride, phthalic acid, m-phthalic acid or its acid anhydride, the polyester polyol that forms with polyol condensating.
3, combined polyol for polyisocyanurate foam according to claim 2 is characterized in that, described polyester polyol molecular-weight average is 200~700, and functionality is 2-8; Described polyvalent alcohol is: ethylene glycol, propylene glycol, glycol ether, butyleneglycol, glycerol, hexanetriol, TriMethylolPropane(TMP), tetramethylolmethane, sorbyl alcohol.
4, combined polyol for polyisocyanurate foam according to claim 1, it is characterized in that, described polyether glycol be single with aliphatic series, two-or polyamines be initiator by being with weight percent: 70~100 1,2 epoxy prapane and weight percent are: it is 100~300 polyether glycol that 0~30 oxyethane mixture addition polymerization makes molecular-weight average.
5, combined polyol for polyisocyanurate foam according to claim 4, it is characterized in that, described aliphatic series is single, two-or polyamines comprise: quadrol, diethylenetriamine, thanomin, diethanolamine, trolamine, N-methyl-or N-ethyldiethanolamine, 1,3-propylene diamine, 1,3-or 1,4-butanediamine or 1,2-, 1,3-, 1,4-, 1,5-or 1, the oligopolymer of 6-hexamethylene-diamine, quadrol.
6, combined polyol for polyisocyanurate foam according to claim 1, it is characterized in that the described compound that contains reactive hydrogen atom should contain the hydrogen atom of 2 energy and isocyanate reaction at least, molecular weight is 60~500, the polyvalent alcohol of functionality in 3~8 scopes.
7, combined polyol for polyisocyanurate foam according to claim 1 is characterized in that, described liquid organic fire-retardant is the organic compound that trichlorine propyl phosphate, trichloroethyl phosphate contain haloid element or phosphoric.
8, combined polyol for polyisocyanurate foam according to claim 1 is characterized in that, described moisture further limits its weight percent and is: 0.5~2.0%.
9, combined polyol for polyisocyanurate foam according to claim 1, it is characterized in that, described catalyzer is the mixture of amines catalyst and metal organic monoacid saline catalyst, comprising: aminated compounds, contain the isoionic organic alkali metal salt of potassium sodium, metal organic monoacid salt, quaternary ammonium salt compound, organic basic compound.
10, combined polyol for polyisocyanurate foam according to claim 1, it is characterized in that, described subsidiary material and/or additive are meant suds-stabilizing agent, use paraffin or Fatty Alcohol(C12-C14 and C12-C18) or dimethyl polysiloxane, oxidation inhibitor or anti-aging agent, pigment or tinting material, softening agent and have mildew-resistant and the material of fungistatic effect, perhaps use filler, as barium sulfate, tripoli, carbon black or whitening agent.
CNB2004100671426A 2004-10-14 2004-10-14 Combined polyol for polyisocyanurate foam Expired - Fee Related CN100523040C (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102276778A (en) * 2011-06-15 2011-12-14 上海大唐盛隆制冷科技有限公司 Fire-retardant polyurethane hard foam material and preparation method thereof
CN105246934A (en) * 2013-06-07 2016-01-13 科思创德国股份公司 Elastic rigid foam having improved temperature stability
CN106167541A (en) * 2016-08-01 2016-11-30 山东诺威新材料有限公司 Continuous way produces PIR bulk bubble combined polyether and its preparation method and application
CN106750211A (en) * 2016-12-16 2017-05-31 上海华峰材料科技研究院(有限合伙) Good aromatic polyester polyol and preparation method thereof with pentamethylene compatibility
CN107299692A (en) * 2017-08-28 2017-10-27 天津市奇才防水材料有限公司 A kind of water-proof heat-preserving integrated plate
CN111253548A (en) * 2020-01-22 2020-06-09 黎明化工研究设计院有限责任公司 Sound-absorbing polyurethane hard foam composite material for vehicle

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102276778A (en) * 2011-06-15 2011-12-14 上海大唐盛隆制冷科技有限公司 Fire-retardant polyurethane hard foam material and preparation method thereof
CN105246934A (en) * 2013-06-07 2016-01-13 科思创德国股份公司 Elastic rigid foam having improved temperature stability
CN106167541A (en) * 2016-08-01 2016-11-30 山东诺威新材料有限公司 Continuous way produces PIR bulk bubble combined polyether and its preparation method and application
CN106167541B (en) * 2016-08-01 2019-03-15 山东一诺威新材料有限公司 Continous way produces PIR bulk bubble combined polyether and its preparation method and application
CN106750211A (en) * 2016-12-16 2017-05-31 上海华峰材料科技研究院(有限合伙) Good aromatic polyester polyol and preparation method thereof with pentamethylene compatibility
CN107299692A (en) * 2017-08-28 2017-10-27 天津市奇才防水材料有限公司 A kind of water-proof heat-preserving integrated plate
CN111253548A (en) * 2020-01-22 2020-06-09 黎明化工研究设计院有限责任公司 Sound-absorbing polyurethane hard foam composite material for vehicle

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