CN104497251A - Combined polyether, polyisocyanurate foam and preparation method thereof - Google Patents
Combined polyether, polyisocyanurate foam and preparation method thereof Download PDFInfo
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- CN104497251A CN104497251A CN201510024003.3A CN201510024003A CN104497251A CN 104497251 A CN104497251 A CN 104497251A CN 201510024003 A CN201510024003 A CN 201510024003A CN 104497251 A CN104497251 A CN 104497251A
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- polyester polyol
- polyisocyanurate foam
- combined polyether
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4202—Two or more polyesters of different physical or chemical nature
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
-
- 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
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
- C08J9/143—Halogen containing compounds
- C08J9/144—Halogen containing compounds containing carbon, halogen and hydrogen only
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0041—Foam properties having specified density
- C08G2110/005—< 50kg/m3
-
- 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
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
- C08J2375/06—Polyurethanes from polyesters
Abstract
The invention discloses a combined polyether, polyisocyanurate foam and a preparation method thereof. The combined polyether includes the materials of 0-4 parts of polyester polyol PS-3152, 4-10 parts of polyester polyol CF-6255, 0-2 parts of polyester polyol AK-POL-3002, 0.3-0.5 parts of foam stabilizer, 0.2-0.4 parts of catalyst, 2.5-3.5 parts of foaming agent, 0.15-0.2 parts of water and 3-4 parts of flame retardant, wherein the foaming agent is 1-chlorin-3,3,3-trifluoropropene; the preparation method of the polyisocyanurate foam includes mixing the combined polyether with the polyisocyanurate uniformly according to a mass ratio is 1:1-4-1:1.6, and pouring into a mold to be subjected to a foaming reaction for molding. The polyisocyanurate foam provided by the invention has excellent flame resistance, storage stability, size stability, compressive strength, environmental protection performance and insulating performance, and does not need an explosion-proof device during a foaming process.
Description
Technical field
The present invention relates to a kind of combined polyether, polyisocyanurate foam and preparation method thereof.
Background technology
Along with the raising day by day that building thermal insulation material requires, polyisocyanurate foam (PIR) system, because reaction is simple, can use the starting material of low cost; There is better high/low temperature dimensional stability, lower thermolytic rate, protection carbon-coating can be formed in combustion processes there is stronger flame retardant resistance; Physical strength is better than rigid urethane foam (PUR) system, production efficiency advantages of higher, in building heat preservation market gradually occupy increasing share, showing American Architecture lagging material 95% share is according to investigations PIR architecture heat preservation material, current PIR material many employings one fluorine ethylene dichloride (HCFC-141b) is as whipping agent, but according to " Montreal Agreement ", the developed countries such as the U.S. and Europe and area prohibitted the use Hydrochlorofluorocarbons blowing agent H CFC-141b before and after 2003.Chinese Government cut down the production of Hydrochlorofluorocarbons and duration of service table then, the production of Hydrochlorofluorocarbons and use are frozen in the level of 2013, and the year two thousand thirty stops production and the use of Hydrochlorofluorocarbons comprehensively.
The LBA whipping agent chemistry 1-chlorine by name that in Honeywell, Co., Ltd produces, 3,3,3 trifluoro propenes (HFO-1233zd), belong to HF hydrocarbon.LBA is colourless transparent liquid, has slight ether taste, and without flammable, LBA toxicity is low, does not have loss to affect on ozonosphere, it has been generally acknowledged that ozone-depleting value (ODP) of diving is 0; Global warming potential (GWP) is less than 5, can meet the environmental requirement of Montreal protocol and Kyoto Protocol simultaneously; Do not have combustibility, foaming process is without the need to explosion-proof equipment; Boiling point 19 DEG C, close to room temperature, easy to operate, directly can use on foaming machine; Good with polyol phase capacitive, vapor phase thermal conductivity is low, the foam heat-insulating property that foams splendid.As can be seen here, LBA can meet environmental protection and safety requirements, can meet again the service requirements of polyurethane industries among others, is the splendid substitute products of existing whipping agent.
But, in existing polyisocyanurate foam formula system, directly substituting Hydrochlorofluorocarbons whipping agent with LBA whipping agent and coordinate with conventional polyether polyvalent alcohol or polyester polyol, there is poor storage stability in obtained polyisocyanurate foam, the problems such as dimensional stability is low, and thermal conductivity is higher.Therefore, for the consideration reducing environmental pollution and the service requirements of raising isocyanurate foam, the isocyanurate foam that the performances such as exploitation a kind of stability in storage, dimensional stability, heat insulating ability, the feature of environmental protection are all excellent is needed badly.
Summary of the invention
Technical problem to be solved by this invention be to overcome adopt Hydrochlorofluorocarbons whipping agent prepare polyisocyanurate foam not environmentally, environmental pollution is serious, and adopt LBA whipping agent to prepare poly-isocyanurate to there is poor storage stability, dimensional stability is low, the defect that thermal conductivity is higher, provides a kind of combined polyether, polyisocyanurate foam and preparation method thereof.The present invention adopts flame retardant polyester polyvalent alcohol CF-6255, or polyester polyol CF-6255 and polyester polyol PS-3152, or polyester polyol PS-3152, polyester polyol CF-6255 and polyester polyol AK-POL-3002 are body material, select LBA whipping agent and specific suds-stabilizing agent SD-221 or L-6900 to prepare combined polyether, with the polyisocyanurate foam that this obtained environmental-protecting performance, stability in storage, flame retardant properties, dimensional stability, ultimate compression strength everyway are very excellent.
The invention provides a kind of combined polyether, the raw materials by weight portion meter of described combined polyether comprises following component: polyester polyol PS-3152 0-4 part, polyester polyol CF-6255 4-10 part, polyester polyol AK-POL-3002 0-2 part, suds-stabilizing agent 0.3-0.5 part, catalyzer 0.2-0.4 part, whipping agent 2.5-3.5 part, water 0.15-0.2 part and fire retardant 3-4 part; Described whipping agent is 1-chlorine, 3,3, and 3 trifluoro propenes (HFO-1233zd), described suds-stabilizing agent is SD-221 or L-6900.
Preferably, the raw materials by weight portion meter of described combined polyether comprises following component: polyester polyol PS-3152 2-4 part, polyester polyol CF-6255 4-10 part, polyester polyol AK-POL-3002 0-2 part, suds-stabilizing agent 0.3-0.5 part, catalyzer 0.2-0.4 part, whipping agent 2.5-3.5 part, water 0.15-0.2 part and fire retardant 3-4 part; Described whipping agent is 1-chlorine, 3,3, and 3 trifluoro propenes (HFO-1233zd), described suds-stabilizing agent is SD-221 or L-6900.
More preferably, the raw materials by weight portion meter of described combined polyether comprises following component: polyester polyol PS-3152 2-4 part, polyester polyol CF-6255 4-10 part, polyester polyol AK-POL-3002 1-2 part, suds-stabilizing agent 0.3-0.5 part, catalyzer 0.2-0.4 part, whipping agent 2.5-3.5 part, water 0.15-0.2 part and fire retardant 3-4 part; Described whipping agent is 1-chlorine, 3,3, and 3 trifluoro propenes (HFO-1233zd), described suds-stabilizing agent is SD-221 or L-6900.
Wherein, described polyester polyol PS-3152 is preferably provided by Nanjing, Nanjing Si Taipan Chemical Co., Ltd., and its functionality is 2, and hydroxyl value is 300-330mgKOH/g, and the viscosity at its 25 DEG C is 2000-3000mPas, and moisture is less than 0.1wt%.Described polyester polyol CF-6255 is preferably provided by Jiangsu Fu Sheng novel material company limited, and the viscosity at its 25 DEG C is 13000-23000mPas, and functionality is 2, number-average molecular weight is 450, hydroxyl value is 230-270mgKOH/g, and moisture is less than 0.1wt%, and acid number is less than 1mgKOH/g.Described polyester polyol AK-POL-3002 is preferably provided by Ai Jing Chemical Co., Ltd., and the viscosity at its 25 DEG C is 2000-3000mPas, and functionality is 2, and hydroxyl value is 300 ~ 330mgKOH/g.
Wherein, described suds-stabilizing agent SD-221 is preferably produced by the high Chemical Co., Ltd. in middle Shandong, and described suds-stabilizing agent L-6900 is preferably produced by Mitugao New Material Group company of the U.S..Described suds-stabilizing agent is preferably SD-221.
Wherein, described catalyzer is the catalyzer that this area routine uses, be generally amines catalyst or organo-metallic catalyst, it is preferably tertiary amine catalyst, be more preferably N, the composite catalyst of N '-dimethyl benzylamine and quaternary ammonium salt catalyst TMR-2, described N, the mass ratio of N '-dimethyl benzylamine and TMR-2 is preferably 1:1-2:1.
Wherein, described 1-chlorine, 3,3, the model that 3 trifluoro propenes are preferably produced for Co., Ltd in Honeywell is the 1-chlorine of LBA, 3,3,3 trifluoro propenes.
Wherein, described water is preferably deionized water.
Wherein, described fire retardant is the fire retardant that this area routine uses, being preferably one or more in tricresyl phosphate (2-chloropropyl) ester (TCPP), three (2-propyloic) phosphine (TCEP) and dimethyl methyl phosphonate (DMMP), is more preferably TCPP.
In a preferred embodiment of the present invention, the raw materials by weight portion meter of described combined polyether is made up of following component: polyester polyol PS-3152 0-4 part, polyester polyol CF-6255 4-10 part, suds-stabilizing agent 0.3-0.5 part, catalyzer 0.2-0.4 part, whipping agent 2.5-3.5 part, water 0.15-0.2 part and fire retardant 3-4 part; Described whipping agent is 1-chlorine, 3,3, and 3 trifluoro propenes (HFO-1233zd), described suds-stabilizing agent is SD-221 or L-6900.
In another preferred embodiment of the present invention, the raw materials by weight portion meter of described combined polyether is made up of following component: polyester polyol PS-3152 2-4 part, polyester polyol CF-6255 4-10 part, suds-stabilizing agent 0.3-0.5 part, catalyzer 0.2-0.4 part, whipping agent 2.5-3.5 part, water 0.15-0.2 part and fire retardant 3-4 part; Described whipping agent is 1-chlorine, 3,3, and 3 trifluoro propenes (HFO-1233zd), described suds-stabilizing agent is SD-221 or L-6900.
In the another preferred embodiment of the present invention, the raw materials by weight portion meter of described combined polyether is made up of following component: polyester polyol PS-3152 2-4 part, polyester polyol CF-6255 4-10 part, polyester polyol AK-POL-3002 1-2 part, suds-stabilizing agent 0.3-0.5 part, catalyzer 0.2-0.4 part, whipping agent 2.5-3.5 part, water 0.15-0.2 part and fire retardant 3-4 part; Described whipping agent is 1-chlorine, 3,3, and 3 trifluoro propenes (HFO-1233zd), described suds-stabilizing agent is SD-221 or L-6900.
Present invention also offers a kind of preparation method of polyisocyanurate foam, it comprises the steps:
(1) by formula, each feed composition of described combined polyether is mixed, obtain Premixed polyether for polyisocyanurate foam;
(2) by described Premixed polyether for polyisocyanurate foam and isocyanic ester in mass ratio 1:1.4-1:1.6 mix, be poured into foamable reaction in mould shaping, obtained polyisocyanurate foam.
In step (1), described is mixed into this area routine operation, and described mixing is preferably carried out in the fool proof mixing kettle of tool, more preferably carries out in stainless steel mixing kettle.The time of described mixing is preferably 0.5-1 hour.
In step (2), the mass ratio of described Premixed polyether for polyisocyanurate foam and isocyanic ester is preferably 1:1.5.
In step (2), described isocyanic ester is preferably diphenylmethanediisocyanate (MDI), is more preferably the PM200 that Yantai ten thousand China produces.
In step (2), described grinding tool is this area conventional grinding tools, is preferably box mould.
In step (2), described foaming is this area routine operation, is preferably high-pressure unit foaming.The temperature of described foaming is preferably 20-25 DEG C.
Present invention also offers the polyisocyanurate foam obtained by above-mentioned preparation method.
Present invention also offers the application of above-mentioned polyisocyanurate foam in exterior wall, oil and gas pipes and tank body field of thermal insulation.
Described polyisocyanurate foam need be cut into the required shape such as thin plate or shell by polyisocyanurate foam of the present invention when being applied to exterior wall, oil and gas pipes and tank body field of thermal insulation.
On the basis meeting this area general knowledge, above-mentioned each optimum condition, can arbitrary combination, obtains the preferred embodiments of the invention.
Agents useful for same of the present invention and raw material are all commercially.
Positive progressive effect of the present invention is:
(1) polyisocyanurate foam that the present invention obtains has excellent flame retardant properties, stability in storage, dimensional stability and ultimate compression strength.
(2) the present invention adopts brand-new forth generation whipping agent LBA (ODP value is 0, GWP value is less than 5) replace traditional HFC-141b (ODP value 0.065 used, GWP value 700), without flammable, toxicity is low, do not have loss to affect on ozonosphere, the environmental requirement of Montreal protocol and Kyoto Protocol can be met simultaneously; Do not have combustibility, foaming process is without the need to explosion-proof equipment; Easy to operate, directly can use on foaming machine; Vapor phase thermal conductivity is low, the foam heat-insulating property that foams splendid.
Embodiment
Mode below by embodiment further illustrates the present invention, but does not therefore limit the present invention among described scope of embodiments.The experimental technique of unreceipted actual conditions in the following example, conventionally and condition, or selects according to catalogue.
Raw material sources used in following embodiment are as follows:
Flame retardant polyester polyvalent alcohol CF-6255 is purchased from Jiangsu Fu Sheng novel material company limited.
Polyester polyol PS-3152 is purchased from Nanjing, Nanjing Si Taipan Chemical Co., Ltd..
Polyester polyol AK-POL-3002 is purchased from Ai Jing Chemical Co., Ltd..
Suds-stabilizing agent SD-221 is purchased from the high Chemical Co., Ltd. in middle Shandong.
Suds-stabilizing agent L-6900 is purchased from Mitugao New Material Group company of the U.S..
Urethane composite catalyst N, N '-dimethyl benzylamine and TMR-2 are purchased from air Chemical Co., Ltd..
Fire retardant TCPP is purchased from Jiangsu supernatural power gram Chemical Co., Ltd..
1-chlorine, 3,3,3 trifluoro propenes (HFO-1233zd) are purchased from Co., Ltd in Honeywell, model LBA.
Diphenylmethanediisocyanate is purchased from Yantai ten thousand China, model PM200.
In following embodiment, the testing standard of every test item is as follows:
Density Detection standard GB6343-1995;
Compressive strength examination criteria GB8813-2008;
Dimensional stability examination criteria GB8811-2008;
Thermal conductivity examination criteria GB/T10285-2008;
Oxygen index examination criteria GB/T 10707-2008.
Embodiment 1:
A preparation method for polyisocyanurate foam, it comprises the steps:
(1) by polyester polyol PS-3152 4 parts, polyester polyol CF-6255 6 parts, suds-stabilizing agent SD-221 0.4 part, catalyzer: N, N '-dimethyl benzylamine 0.25 part and TMR-2 0.15 part, whipping agent LBA 3 parts, 0.15 part, water and fire retardant TCPP 3 parts add in stainless steel mixing kettle, and stir 1 hour with the rotating speed of 500 revs/min under room temperature, namely blowing obtains Premixed polyether for polyisocyanurate foam;
(2) Premixed polyether for polyisocyanurate foam and isocyanic ester PM200 are reacted at 20 DEG C according to mass ratio 1:1.5, inject the obtained core density of mould and be about 40Kg/m
3polyisocyanurate foam lagging material.The physicals of this polyisocyanurate foam is in table 1.
Comparative example 1:
A preparation method for polyisocyanurate foam, it comprises the steps:
(1) by polyester polyol PS-3152 4 parts, polyester polyol CF-6255 6 parts, suds-stabilizing agent SD-221 0.4 part, catalyzer: N, N '-dimethyl benzylamine 0.25 part and TMR-2 0.15 part, blowing agent H CFC-141b 4 parts, 0.15 part, water and fire retardant TCPP 3 parts add in stainless steel mixing kettle, and stir 1 hour with the rotating speed of 500 revs/min under room temperature, namely blowing obtains Premixed polyether for polyisocyanurate foam;
(2) Premixed polyether for polyisocyanurate foam and isocyanic ester PM200 are reacted at 20 DEG C according to mass ratio 1:1.5, inject the obtained core density of mould and be about 40Kg/m
3polyisocyanurate foam lagging material.The physicals of this polyisocyanurate foam is in table 1.
Table 1
Embodiment 2:
A preparation method for polyisocyanurate foam, it comprises the steps:
(1) by polyester polyol PS-3152 2 parts, polyester polyol CF-6255 8 parts, suds-stabilizing agent SD-221 0.4 part, catalyzer: N, N '-dimethyl benzylamine 0.15 part and TMR-2 0.15 part, whipping agent LBA 3 parts, 0.15 part, water and fire retardant TCPP 3 parts add in stainless steel mixing kettle, and stir 1 hour with the rotating speed of 500 revs/min under room temperature, namely blowing obtains Premixed polyether for polyisocyanurate foam.
(2) Premixed polyether for polyisocyanurate foam and isocyanic ester PM200 are reacted at 20 DEG C according to mass ratio 1:1.5, inject the obtained core density of mould and be about 40Kg/m
3polyisocyanurate foam lagging material.The physicals of this polyisocyanurate foam is in table 2.
Comparative example 2:
A preparation method for polyisocyanurate foam, it comprises the steps:
(1) by polyester polyol PS-3152 2 parts, polyester polyol CF-6255 8 parts, suds-stabilizing agent SD-221 0.4 part, catalyzer: N, N '-dimethyl benzylamine 0.15 part and TMR-2 0.15 part, blowing agent H CFC-141b 4 parts, 0.15 part, water and fire retardant TCPP 3 parts add in stainless steel mixing kettle, and stir 1 hour with the rotating speed of 500 revs/min under room temperature, namely blowing obtains Premixed polyether for polyisocyanurate foam;
(2) Premixed polyether for polyisocyanurate foam and isocyanic ester PM200 are reacted at 20 DEG C according to mass ratio 1:1.5, inject the obtained core density of mould and be about 40Kg/m
3polyisocyanurate foam lagging material.The physicals of this polyisocyanurate foam is in table 2.
Table 2
Embodiment 3:
A preparation method for polyisocyanurate foam, it comprises the steps:
(1) by polyester polyol CF-6255 10 parts, suds-stabilizing agent SD-221 0.4 part, catalyzer: N, N '-dimethyl benzylamine 0.15 part and TMR-2 0.15 part, whipping agent LBA 3 parts, 0.15 part, water and fire retardant TCPP 3 parts add in stainless steel mixing kettle, and stir 1 hour with the rotating speed of 500 revs/min under room temperature, namely blowing obtains Premixed polyether for polyisocyanurate foam;
(2) Premixed polyether for polyisocyanurate foam and isocyanic ester PM200 are reacted at 20 DEG C according to mass ratio 1:1.5, inject the polyisocyanurate foam lagging material that the obtained core density of mould is about 40Kg/m3.The physicals of this polyisocyanurate foam is in table 3.
Comparative example 3:
A preparation method for polyisocyanurate foam, it comprises the steps:
(1) by polyester polyol CF-6255 10 parts, suds-stabilizing agent SD-221 0.4 part, catalyzer: N, N '-dimethyl benzylamine 0.15 part and TMR-2 0.15 part, blowing agent H CFC-141b 4 parts, 0.15 part, water and fire retardant TCPP 3 parts add in stainless steel mixing kettle, and stir 1 hour with the rotating speed of 500 revs/min under room temperature, namely blowing obtains Premixed polyether for polyisocyanurate foam;
(2) Premixed polyether for polyisocyanurate foam and isocyanic ester PM200 are reacted at 20 DEG C according to mass ratio 1:1.5, inject the obtained core density of mould and be about 40Kg/m
3polyisocyanurate foam lagging material.The physicals of this polyisocyanurate foam is in table 3.
Table 3
Embodiment 4:
A preparation method for polyisocyanurate foam, it comprises the steps:
(1) by polyester polyol PS-3152 2 parts, polyester polyol CF-6255 6 parts, polyester polyol AK-POL-3002 2 parts, suds-stabilizing agent SD-221 0.4 part, catalyzer: N, N '-dimethyl benzylamine 0.25 part and TMR-2 0.15 part, whipping agent LBA 3 parts, 0.15 part, water and fire retardant TCPP 3 parts add in stainless steel mixing kettle, and stir 1 hour with the rotating speed of 500 revs/min under room temperature, namely blowing obtains Premixed polyether for polyisocyanurate foam;
(2) Premixed polyether for polyisocyanurate foam and isocyanic ester PM200 are reacted at 20 DEG C according to mass ratio 1:1.5, inject the obtained core density of mould and be about 40Kg/m
3polyisocyanurate foam lagging material.The physicals of this polyisocyanurate foam is in table 4.
Comparative example 4:
A preparation method for polyisocyanurate foam, it comprises the steps:
(1) by polyether glycol NJ-8238 4 parts, polyester polyol CF-6255 6 parts, suds-stabilizing agent SD-221 0.4 part, catalyzer: N, N '-dimethyl benzylamine 0.25 part and TMR-2 0.15 part, whipping agent LBA 3 parts, 0.15 part, water and fire retardant TCPP 3 parts add in stainless steel mixing kettle, and stir 1 hour with the rotating speed of 500 revs/min under room temperature, namely blowing obtains Premixed polyether for polyisocyanurate foam;
(2) Premixed polyether for polyisocyanurate foam and isocyanic ester PM200 are reacted at 20 DEG C according to mass ratio 1:1.5, inject the obtained core density of mould and be about 40Kg/m
3polyisocyanurate foam lagging material.The physicals of this polyisocyanurate foam is in table 4.
Table 4
Embodiment 5:
A preparation method for polyisocyanurate foam, it comprises the steps:
(1) by polyester polyol PS-3152 3 parts, polyester polyol CF-6255 6 parts, polyester polyol AK-POL-3002 1 part, suds-stabilizing agent L-6900 0.4 part, catalyzer: N, N '-dimethyl benzylamine 0.25 part and TMR-2 0.15 part, whipping agent LBA 3 parts, 0.15 part, water and fire retardant TCPP 3 parts add in stainless steel mixing kettle, and stir 1 hour with the rotating speed of 500 revs/min under room temperature, namely blowing obtains Premixed polyether for polyisocyanurate foam;
(2) Premixed polyether for polyisocyanurate foam and isocyanic ester PM200 are reacted at 20 DEG C according to mass ratio 1:1.5, inject the obtained core density of mould and be about 40Kg/m
3polyisocyanurate foam lagging material.
Claims (10)
1. a combined polyether, it is characterized in that, the raw materials by weight portion meter of described combined polyether comprises following component: polyester polyol PS-31520-4 part, polyester polyol CF-62554-10 part, polyester polyol AK-POL-30020-2 part, suds-stabilizing agent 0.3-0.5 part, catalyzer 0.2-0.4 part, whipping agent 2.5-3.5 part, water 0.15-0.2 part and fire retardant 3-4 part; Described whipping agent is 1-chlorine, 3,3, and 3 trifluoro propenes, described suds-stabilizing agent is SD-221 or L-6900.
2. combined polyether as claimed in claim 1, it is characterized in that, the raw materials by weight portion meter of described combined polyether comprises following component: polyester polyol PS-31522-4 part, polyester polyol CF-62554-10 part, polyester polyol AK-POL-30020-2 part, suds-stabilizing agent 0.3-0.5 part, catalyzer 0.2-0.4 part, whipping agent 2.5-3.5 part, water 0.15-0.2 part and fire retardant 3-4 part; Described whipping agent is 1-chlorine, 3,3, and 3 trifluoro propenes, described suds-stabilizing agent is SD-221 or L-6900.
3. combined polyether as claimed in claim 1, it is characterized in that, the raw materials by weight portion meter of described combined polyether comprises following component: polyester polyol PS-31522-4 part, polyester polyol CF-62554-10 part, polyester polyol AK-POL-30021-2 part, suds-stabilizing agent 0.3-0.5 part, catalyzer 0.2-0.4 part, whipping agent 2.5-3.5 part, water 0.15-0.2 part and fire retardant 3-4 part; Described whipping agent is 1-chlorine, 3,3, and 3 trifluoro propenes, described suds-stabilizing agent is SD-221 or L-6900.
4. the combined polyether as described in any one of claim 1-3, is characterized in that, described suds-stabilizing agent is SD-221; And/or described catalyzer is tertiary amine catalyst.
5. combined polyether as claimed in claim 4, it is characterized in that, described catalyzer is the composite catalyst of N, N '-dimethyl benzylamine and quaternary ammonium salt catalyst TMR-2.
6. as right require as described in 5 combined polyether, it is characterized in that, described catalyzer is N, N '-dimethyl benzylamine and the quaternary ammonium salt catalyst TMR-2 composite catalyst that 1:1-2:1 is composite in mass ratio.
7. a preparation method for polyisocyanurate foam, is characterized in that, it comprises the steps:
(1) by formula, each feed composition of combined polyether described in any one of claim 1-6 is mixed, obtain Premixed polyether for polyisocyanurate foam;
(2) by described Premixed polyether for polyisocyanurate foam and isocyanic ester in mass ratio 1:1.4-1:1.6 mix, be poured into foamable reaction in mould shaping, obtained polyisocyanurate foam.
8. preparation method as claimed in claim 7, it is characterized in that, in step (1), described being blended in stainless steel mixing kettle is carried out, and the time of described mixing is 0.5-1 hour;
And/or in step (2), the mass ratio of described Premixed polyether for polyisocyanurate foam and isocyanic ester is 1:1.5;
And/or in step (2), described isocyanic ester is diphenylmethanediisocyanate, is preferably PM200;
And/or in step (2), described grinding tool is box mould;
And/or in step (2), described foaming is high-pressure unit foaming, and the temperature of described foaming is 20-25 DEG C.
9. the polyisocyanurate foam obtained by the preparation method described in claim 7 or 8.
10. the application of polyisocyanurate foam in exterior wall, oil and gas pipes and tank body field of thermal insulation as claimed in claim 9.
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| WO2020201312A1 (en) | 2019-04-02 | 2020-10-08 | Basf Se | Insulated pipe containing polyurethane foam which is foamed by an environmentally friendly foaming agent and has a low degree of brittleness |
| US11932761B2 (en) | 2021-02-08 | 2024-03-19 | Covestro Llc | HFCO-containing isocyanate-reactive compositions, polyurethane foams formed therefrom, and composite articles that include such foams |
| US11732081B2 (en) | 2021-06-08 | 2023-08-22 | Covestro Llc | HCFO-containing isocyanate-reactive compositions, related foam-forming compositions and flame retardant PUR-PIR foams |
| US11905707B2 (en) | 2021-06-29 | 2024-02-20 | Covestro Llc | Foam wall structures and methods for their manufacture |
| US11767394B2 (en) | 2021-12-09 | 2023-09-26 | Covestro Llc | HCFO-containing polyurethane foam-forming compositions, related foams and methods for their production |
| US11767407B1 (en) | 2022-04-21 | 2023-09-26 | Covestro Llc | HCFO-containing polyurethane foam-forming compositions, related foams and methods for their production |
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| US11970565B2 (en) | 2023-06-27 | 2024-04-30 | Covestro Llc | HCFO-containing isocyanate-reactive compositions, related foam-forming compositions and flame retardant PUR-PIR foams |
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