CN110372838B - Combined polyether polyol, polyurethane foam and preparation method thereof - Google Patents
Combined polyether polyol, polyurethane foam and preparation method thereof Download PDFInfo
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- CN110372838B CN110372838B CN201910636549.2A CN201910636549A CN110372838B CN 110372838 B CN110372838 B CN 110372838B CN 201910636549 A CN201910636549 A CN 201910636549A CN 110372838 B CN110372838 B CN 110372838B
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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
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
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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
- C08J9/04—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
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2101/00—Manufacture of cellular products
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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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
- C08J2203/142—Halogenated saturated hydrocarbons, e.g. H3C-CF3
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention relates to a combined polyether polyol, polyurethane foam and a preparation method thereof. The combined polyether polyol comprises the following components in parts by weight: 100 parts of polyether polyol; 4-6 parts of a catalyst; 2-3 parts of a foam stabilizer; 20-25 parts of a foaming agent; 0.8-1.5 parts of water; wherein the polyether polyol comprises a combination of two or more of EP330N, EP3600, YD6205, SD8238, NJ-410HN or SD 7100. Compared with the prior art, the composite material has the characteristics of low-temperature foaming, particularly no shrinkage during foaming at about 0 ℃ by adjusting the type of polyether polyol and combining with effective catalyst, foam stabilizer and foaming agent, so that the heat-insulating property of the door and window profile product is ensured.
Description
Technical Field
The invention relates to the field of polyurethane, in particular to a combined polyether polyol, polyurethane foam and a preparation method thereof.
Background
In modern buildings, doors and windows are one of the most common parts, wherein aluminum alloy doors and windows are the mainstream of consumers due to the advantages of convenient production and installation, no deformation after long-term use and the like, but aluminum alloy has better heat conduction effect relative to wood and the like, which can lead to the increase of energy consumption, and along with the higher and higher national requirements on energy conservation and consumption reduction, the energy conservation of the doors and windows draws the attention of numerous scholars. In order to solve the energy-saving and heat-insulating problem of doors and windows, materials such as rock wool, polystyrene, polyurethane rigid foam and the like can be filled in the section bars of the doors and windows. As is well known, polyurethane is the best material for thermal insulation among the currently known organic materials, and thus is the first choice for filling windows and doors. The aluminum alloy building heat-insulating section bar in China mainly comprises a bar penetrating type section bar and a pouring type section bar, the market share of the bar penetrating type section bar is large, a cavity is formed in the middle of the section bar, and the heat-insulating property of the section bar can be greatly improved by filling a polyurethane hard foam material.
The polyurethane rigid foam needs a certain environmental temperature in the production process and has requirements on the temperature of door and window profiles, but all manufacturers produce the polyurethane rigid foam at the environmental temperature in the actual production process, so that the process requirements are difficult to guarantee, and particularly when the environmental temperature is about 0 ℃, the problem of shrinkage of the polyurethane rigid foam material is particularly prominent, and the heat insulation performance of doors and windows is seriously damaged.
For this reason, it is of great importance to develop a rigid polyurethane foam which can be foamed at temperatures below 10 ℃ and in particular at 0 ℃ without shrinkage.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the combined polyether polyol for filling the low-temperature foaming type bridge-cut-off aluminum doors and windows.
It is another object of the present invention to provide a polyurethane foam foamed from the above-mentioned combination polyether polyol.
The present application also aims to provide a process for the preparation of the above polyurethane foams.
In order to achieve the object of the present invention, the present application provides the following technical solutions.
In a first aspect, the present application provides a combined polyether polyol, characterized in that the combined polyether polyol comprises the following composition in parts by weight:
wherein the polyether polyol comprises a combination of two or more of EP330N, EP3600, YD6205, SD8238, NJ-410HN or SD 7100.
In one embodiment of the first aspect, the catalyst comprises one or more of POLYACAT 5, POLYACAT 8, Dabco BX405, K15, POLYCAT 41, DABCO T.
In one embodiment of the first aspect, the foam stabilizer comprises one or both of B8545 or S-198.
In one embodiment of the first aspect, the blowing agent is the blowing agent HCFC-141 b.
In a second aspect, the present application provides a polyurethane foam for filling low-temperature foaming type bridge-cut aluminum doors and windows, wherein the polyurethane foam is prepared by foaming the combined polyether polyol and isocyanate.
In one embodiment of the second aspect, the isocyanate comprises a polyphenyl polymethylene polyisocyanate.
In one embodiment of the second aspect, the mass ratio of the combined polyether polyol and the isocyanate is 0.5-1.5: 1, preferably 1: 1.
In a third aspect, the present application provides a preparation method of a polyurethane foam for filling a low-temperature foaming type bridge-cut-off aluminum door/window, the preparation method comprising the steps of: mixing the combined polyether polyol and isocyanate in a low pressure foaming machine; and then pouring the polyurethane foam into a paper strip foaming groove for foaming to obtain the polyurethane foam.
In one embodiment of the third aspect, the combined polyether polyol and isocyanate are mixed in the low pressure foaming machine at a total flow rate of 10 to 40g/s, preferably 30 g/s.
In one embodiment of the third aspect, the mixing temperature in the low-pressure foaming machine is-5 to 35 ℃.
In one embodiment of the third aspect, the temperature of the foaming is-5 to 35 ℃.
Compared with the prior art, the invention has the beneficial effects that: by adjusting the type of polyether polyol and combining with effective catalysts, foam stabilizers and foaming agents, the composite material has the characteristic of no shrinkage during low-temperature foaming, particularly foaming at about 0 ℃, so that the heat insulation performance of door and window profile products is ensured.
Detailed Description
Unless otherwise defined, technical or scientific terms used herein in the specification and claims should have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. All numerical values recited herein as between the lowest value and the highest value are intended to mean all values between the lowest value and the highest value in increments of one unit when there is more than two units difference between the lowest value and the highest value.
While specific embodiments of the invention will be described below, it should be noted that in the course of the detailed description of these embodiments, in order to provide a concise and concise description, all features of an actual implementation may not be described in detail. Modifications and substitutions to the embodiments of the present invention may be made by those skilled in the art without departing from the spirit and scope of the present invention, and the resulting embodiments are within the scope of the present invention.
The traditional polyurethane rigid foam material is produced at a low ambient temperature, particularly at about 0 ℃, and the obtained product has poor shrinkage performance and seriously damages the heat insulation performance of doors and windows. The application aims to provide a low-temperature foaming type combined polyether polyol for filling bridge-cut-off aluminum doors and windows, which comprises the following components in parts by weight:
wherein the polyether polyol comprises a combination of two or more of EP330N, EP3600, YD6205, SD8238, NJ-410HN or SD 7100.
In one embodiment, the polyether polyol YD6205 is preferably available from northern Asia-east chemical group, Inc. having a hydroxyl number of 355-395mgKOH/g and a viscosity of 2000-3000mpa.s/25 ℃.
In one embodiment, the polyether polyols EP330N, EP3600 are preferably available from Dow chemical Co., Ltd, Dow, Shandong, Lanxing, wherein EP330N has a hydroxyl number of 32-36mgKOH/g, a viscosity of 800-1000mPa.s/25 ℃, EP3600 has a hydroxyl number of 26-30mgKOH/g, and a viscosity of 1000-1600mPa.s/25 ℃.
In one embodiment, the polyether polyol NJ-410HN is preferably available from Tanklini chemical Co., Ltd, having a hydroxyl number of 310-.
In one embodiment, the polyether polyols SD7100 and SD8238 are preferably available from Shanghai Dongdong chemical Co., Ltd, wherein SD7100 has a hydroxyl value of 360-.
In one embodiment, the catalyst comprises one or more of PolyACAT 5, PolyACAT 8, Dabco BX405, K15, PolyCAT 41, and DABCO T, all available from gas chemical (China) investment Limited.
In one embodiment, the foam stabilizer comprises one or both of B8545 or S-198, wherein B8545 is available from WiegenAdam (China) Inc., and S-198 is available from Shanghai Maihao chemical technology Inc.
In one embodiment, the blowing agent is the blowing agent HCFC-141b available from Sandeli industries, Inc. of Zhejiang.
In one embodiment, the water is preferably deionized water.
In a second aspect, the application also provides a polyurethane foam for filling low-temperature foaming type bridge-cut aluminum doors and windows, wherein the polyurethane foam is prepared by foaming the combined polyether polyol and isocyanate.
In one embodiment of the second aspect, the isocyanate may be an isocyanate conventionally used in the art, preferably a polyphenyl polymethylene polyisocyanate (abbreviated as PAPI) available from bayer, germany.
In one embodiment of the second aspect, the mass ratio of the combined polyether polyol and the isocyanate is 0.5-1.5: 1, preferably 1: 1.
In a third aspect, the present application also provides a method for preparing a polyurethane foam for a door and window profile, comprising the steps of: and mixing the combined polyether polyol with PAPI by using a low-pressure foaming machine according to the flow rate of 20-40 g/s, and pouring the mixed polyether polyol into a paper strip foaming groove to penetrate into a cavity of the door and window profile to obtain the door and window profile filled with the polyurethane rigid foam.
In a particular embodiment of the third aspect, the method and conditions of mixing of the conjugate polyether are conventional in the art, and the mixing temperature of the low-pressure foaming machine is ambient temperature, in particular around 0 ℃, which is rare in the art.
In one embodiment of the third aspect, the mixing is preferably performed using a low pressure foaming machine, with a flow rate of 30 g/s.
In a particular embodiment of the third aspect, the foaming process and conditions are conventional in the art, and are generally free-foaming at room temperature, particularly around 0 ℃.
Examples
The following will describe in detail the embodiments of the present invention, which are implemented on the premise of the technical solution of the present invention, and the detailed embodiments and the specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
The preparation method of the combined polyether polyol comprises the following steps:
putting polyether polyol EP3600(5 parts), NJ-410HN (50 parts) and SD8238(45 parts) into a reaction kettle, sequentially adding catalysts POLYACAT 5(1 part), POLYACAT 8(1 part), POLYCAT 41(2 parts), silicone oil B8545(3 parts), deionized water (0.8 part) and a foaming agent (25 parts), and uniformly stirring to obtain the polyether polyol.
And (2) injecting the combined polyether polyol and the PAPI at the flow rate of 30g/s by using a low-pressure foaming machine, wherein the mass ratio of the combined polyether polyol to the PAPI is 1:1, and respectively foaming and molding at 0 ℃ and room temperature (25 ℃) to obtain the door and window section.
Example 2
The preparation method of the combined polyether polyol comprises the following steps:
putting polyether polyol SD7100(40 parts) and SD8238(60 parts) into a reaction kettle, sequentially adding catalysts DABCO T (1 part), K15(3 parts), silicone oil B8545(2 parts), S198(1 part), deionized water (1 part) and a foaming agent (21 parts), and uniformly stirring to obtain the polyurethane foam material;
and (2) injecting the combined polyether polyol and the PAPI at the flow rate of 30g/s by using a low-pressure foaming machine, wherein the mass ratio of the combined polyether polyol to the PAPI is 1:1, and respectively foaming and molding at 0 ℃ and room temperature (30 ℃) to obtain the door and window section.
Example 3
The preparation method of the combined polyether polyol comprises the following steps:
putting polyether polyol EP330N (10 parts), YD6205(60 parts) and SD7100(30 parts) into a reaction kettle, sequentially adding catalysts, namely POLYACAT 5(0.5 part), Dabco BX405(1 part), K15(3 parts), silicone oil S198(1.5 parts), deionized water (1.5 parts) and a foaming agent (20 parts), and uniformly stirring to obtain the polyurethane foam material;
and (2) injecting the combined polyether polyol and the PAPI at the flow rate of 30g/s by using a low-pressure foaming machine, wherein the mass ratio of the combined polyether polyol to the PAPI is 1:2, and respectively foaming and molding at 0 ℃ and room temperature (35 ℃) to obtain the door and window section.
Example 4
The preparation method of the combined polyether polyol comprises the following steps:
putting polyether polyol EP330N (10 parts), SD8238(60 parts) and NJ410HN (30 parts) into a reaction kettle, sequentially adding catalysts POLYACAT 8(2 parts), POLYCAT 41(4 parts), silicone oil S198(1 part), B8545(1 part), deionized water (1.2 parts) and a foaming agent (23 parts), and uniformly stirring to obtain the polyurethane foam material;
and (2) injecting the combined polyether polyol and the PAPI at the flow rate of 30g/s by using a low-pressure foaming machine, wherein the mass ratio of the combined polyether polyol to the PAPI is 1.5:1, and respectively foaming and molding at 0 ℃ and room temperature (-5 ℃) to obtain the door and window section.
The products obtained in the embodiments 1-4 are subjected to effect test, wherein the dimensional stability adopts GB/T26709-2011 standard, the products are tested for 24 hours at the temperature of minus 30 ℃, the heat conductivity coefficient adopts GB/T10295-. The raw material compositions and test results of examples 1 to 4 are shown in Table 1.
Table 1 examples 1-4 raw material compositions and test results
Comparative example 1
The common rigid polyurethane foam material is prepared by uniformly stirring polyether polyol SD6207(90 parts), polyester polyol PS3152(10 parts), water (2 parts), catalyst POLYACAT 5(0.2 part), catalyst POLYACAT 8(1.5 parts), catalyst POLYCAT 41(0.2 part), foam stabilizer H3201(2 parts) and foaming agent HCFC-141b (20 parts).
And (2) injecting the combined polyether polyol and the PAPI at the flow rate of 30g/s by using a low-pressure foaming machine, wherein the mass ratio of the combined polyether polyol to the PAPI is 1:1, and respectively infusing at three temperatures of 0 ℃, 10 ℃ and 25 ℃ to obtain the product.
Comparative example 2
The same formula as that of example 1 in patent CN 108774392A, namely 60 parts of polyester polyol, 10 parts of polyether polyol, 10 parts of water, 0.2 part of catalyst, 0.1 part of foam stabilizer, 4 parts of foaming agent, 14 parts of chain extender, 3 parts of flame retardant and 2 parts of anti-aging agent, is adopted, and the product is prepared by adopting a preparation method under the similar conditions as that of example 1 and respectively soaking at three temperatures of-5 ℃, 0 ℃ and 25 ℃.
The products of comparative examples 1 and 2 were tested for their effects, wherein the dimensional stability was measured by GB/T26709-2011 at-30 ℃ for 24h, the thermal conductivity was measured by GB/T10295-. The raw material compositions and test results of examples 1 to 4 are shown in Table 1. The results are shown in Table 2.
As can be seen from the comparison of the detection results in tables 1 and 2, the polyurethane raw materials in examples 1 to 4 can still foam normally at about 0 ℃, have good dimensional stability and have good heat insulation effect.
The embodiments described above are intended to facilitate the understanding and appreciation of the application by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present application is not limited to the embodiments herein, and those skilled in the art who have the benefit of this disclosure will appreciate that many modifications and variations are possible within the scope of the present application without departing from the scope and spirit of the present application.
Claims (11)
1. The combined polyether polyol is characterized by comprising the following components in parts by weight:
wherein the polyether polyol is any one of a combination of EP3600, SD8238 and NJ-410HN, a combination of SD8238 and SD7100, a combination of EP330N, YD6205 and SD7100, and a combination of EP330N, SD8238 and NJ-410 HN;
the foaming agent is foaming agent HCFC-141 b.
2. The combination polyether polyol of claim 1, wherein said catalyst comprises one or more of POLYACAT 5, POLYACAT 8, Dabco BX405, K15, POLYCAT 41, DABCO T.
3. The combination polyether polyol of claim 1, wherein the foam stabilizer comprises one or both of B8545 or S-198.
4. A polyurethane foam prepared by foaming the polyether polyol composition of any one of claims 1 to 3 and an isocyanate.
5. The polyurethane foam of claim 4, wherein the isocyanate comprises a polyphenyl polymethylene polyisocyanate.
6. The polyurethane foam according to claim 4, wherein the mass ratio of the conjugate polyether polyol to the isocyanate is 0.5 to 1.5: 1.
7. The polyurethane foam of claim 6, wherein the mass ratio of the conjugate polyether polyol to the isocyanate is 1: 1.
8. A process for preparing a polyurethane foam as claimed in any one of claims 4 to 7, comprising the steps of:
mixing the combined polyether polyol and isocyanate in a low pressure foaming machine; and then pouring the polyurethane foam into a paper strip foaming groove for foaming to obtain the polyurethane foam.
9. The method of preparing the polyurethane foam of claim 8, wherein the combined polyether polyol and the isocyanate are mixed in the low pressure foaming machine at a total flow rate of 10 to 40 g/s.
10. The method of preparing a polyurethane foam according to claim 9, wherein the combined polyether polyol and isocyanate are mixed in the low pressure foaming machine at a total flow rate of 30 g/s.
11. The method of preparing a polyurethane foam according to claim 8, wherein the mixing temperature in the low-pressure foaming machine is-5 to 35 ℃;
the foaming temperature is-5-35 ℃.
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| CN110591037B (en) * | 2019-11-01 | 2022-03-11 | 上海东大聚氨酯有限公司 | Full-water soft flame-retardant low-density combined polyether, polyurethane foam, bridge-cut-off aluminum and preparation method thereof |
| CN113024766B (en) * | 2019-12-24 | 2021-12-07 | 比亚迪股份有限公司 | Polyurethane composition and polyurethane foam |
| CN112708105A (en) * | 2020-12-28 | 2021-04-27 | 上海东大聚氨酯有限公司 | High-flame-retardance low-temperature foaming type door and window strip penetrating foaming material, polyurethane foam and preparation method of polyurethane foam |
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