CN114213695B - Polyurethane foam stabilizer with excellent foam pore performance, preparation method and application - Google Patents
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- 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
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
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- 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
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/42—Block-or graft-polymers containing polysiloxane sequences
- C08G77/46—Block-or graft-polymers containing polysiloxane sequences containing polyether sequences
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- 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
- C08J9/06—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 chemical blowing agent
- C08J9/08—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 chemical blowing agent developing carbon dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
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- 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
- C08J2375/08—Polyurethanes from polyethers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention relates to the technical field of polyurethane foam, in particular to a polyurethane foam stabilizer with excellent foam property, a preparation method and application thereof, wherein the polyurethane foam stabilizer is prepared by mixing a component A and a component B, and the component A has the following chemical structure:
wherein x = 60-100, y = 3-10; r is 1 The general formula is (CH) 2 ) p (OC 2 H 4 ) g (OC 3 H 6 ) h OR 2 Wherein p = 2-4,g = 10-40, h = 0-40; r 2 Is H, -CH 3 or-C (O) CH 3 (ii) a The chemical structure of the component B is
Wherein R is a Is a silicone segment, R b Is a polyether segment.
Description
Technical Field
The invention relates to the technical field of polyurethane foam, in particular to a polyurethane foam stabilizer based on an organic silicon foam stabilizer and a preparation method thereof.
Background
The foam stabilizer is an important component in the preparation process of polyurethane, and is related to the opening rate, the size and the distribution of pores of a polyurethane product, and meanwhile, the structure of the foam stabilizer has a decisive influence on the foam stabilizing performance and the opening performance, so that the application indexes of the soft polyurethane foam, such as hand feeling, air permeability and the like, are determined.
At present, when the existing foam stabilizer is used in a polyurethane foaming system, the problems of thick foam pores, low air permeability, rough foam hand feeling and the like exist to different degrees.
Patent CN201510679357.1 describes a polyurethane soft foam with fine and dense foam pores, the used expression activator has a special structure, and both ends of the expression activator are terminal allyl polyether, glyceryl polyether and terminal hydrogen dimethyl silicone oil for synthesis, so that the polyurethane foam structure can be effectively improved, the foam pore structure is more uniform and fine, and the hand feeling is better. However, the polyether used is special, and needs allyl group for end capping, and the reaction is complicated.
Patent CN201810893336.3 describes an organosilicon foam stabilizer, which is prepared by using allyl terminated polyether and hydrosilicon terminated low-hydrogen silicone oil to perform a grafting reaction, and the obtained foam stabilizer has good emulsibility.
Disclosure of Invention
The invention aims to provide a polyurethane foam stabilizer with excellent foam pore performance, a preparation method and application thereof, so as to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
a polyurethane foam stabilizer with excellent foam pore performance is prepared by mixing a component A and a component B, wherein the chemical structure of the component A is as follows:
wherein x =60 to 100, y =3 to 10,
R 1 the general structural formula is (CH) 2 ) p (OC 2 H 4 ) g (OC 3 H 6 ) h OR 2 Wherein p = 2-4,g = 10-40, h = 0-40;
R 2 is H, CH 3 ，C(O)CH 3 ；
The chemical structure of the component B is shown as the following general formula:
wherein R is a Represents an organosilicon chain segment with a structure of CH 3 Si[O(Si(CH 3 ) 2 ) m O-] 3 Wherein m =1 to 15; r b Represents a polyether segment. Wherein R is b Is a monofunctional polyether chain segment or a multifunctional polyether chain segment.
When R is b Is a monofunctional polyether segment having the general formula C n H 2n+1 O(C 2 H 4 O) a (C 3 H 6 O) b Where n =1 to 6, a =5 to 20, and b =5 to 25.
When R is b Is a multifunctional polyether segment with the general formula of-O (C) 2 H 4 O) c (C 3 H 6 O) d -, where c =5 to 30, d =5 to 40;
or
Wherein e =5 to 20, f =5 to 20.
The preparation method of the component A in the polyurethane foam stabilizer comprises the following steps:
(1) To a round bottom flask equipped with a mechanical stirrer, a dry nitrogen line and a reflux condenser was added allyl polyether, polyorganosiloxane (MD) x D’ y M, wherein M is (CH) 3 ) 3 Si-, D is-Si (CH) 3 ) 2 -, D' is-Si (CH) 3 ) H-), an organic amine assistant, keeping the temperature at 80-90 ℃ for 10-30 min, adding a platinum catalyst, and carrying out a grafting reaction to obtain polyether modified polysiloxane;
(2) Adding dipropylene glycol and diethylene glycol into the polyether modified polysiloxane to obtain the component A.
Wherein the preparation method of the component B in the polyurethane foam stabilizer comprises the following steps:
(1) Adding 1-5 parts by weight of n-butyl alcohol, 5-25 parts by weight of ethylene oxide and 2-30 parts by weight of propylene oxide into a reaction kettle, controlling the reaction temperature to be 90-120 ℃ and the reaction pressure to be below 1MPa under the action of 0.01-0.2 part by weight of an alkaline catalyst, reacting for 3-8 hours, and carrying out refining treatment such as neutralization and filtration to obtain n-butyl initiated polyether;
(2) Adding 1-3 parts by weight of ethylene glycol, 5-30 parts by weight of ethylene oxide and 2-40 parts by weight of propylene oxide into a reaction kettle, reacting for 3-8 hours under the action of 0.01-0.2 part by weight of an alkaline catalyst and at the reaction temperature of 90-120 ℃ and the reaction pressure of below 1MPa, and carrying out refining treatment such as neutralization and filtration to obtain dihydroxy polyether;
(3) Adding 1-2 parts by weight of glycerol, 5-20 parts by weight of ethylene oxide and 2-20 parts by weight of propylene oxide into a reaction kettle, controlling the reaction temperature to be 90-120 ℃ and the reaction pressure to be below 1MPa under the action of 0.01-0.2 part by weight of an alkaline catalyst, reacting for 3-8 hours, and carrying out refining treatment such as neutralization, filtration and the like to obtain trifunctional polyether;
wherein, the alkaline catalyst in the steps (1) to (3) is potassium hydroxide or sodium hydroxide;
(4) Adding 1-5 parts by weight of methyltrimethoxysilane and 2-10 parts by weight of octamethylcyclotetrasiloxane into a reaction kettle, reacting for 4-10 hours at the reaction temperature of 90-110 ℃ under the action of 0.001-0.01 part by weight of alkaline catalyst, and neutralizing, filtering and the like to obtain an organic silicon copolymer with a branched chain structure;
the alkaline catalyst in the step is potassium hydroxide, sodium hydroxide or tetramethyl ammonium hydroxide;
(5) Adding the organic silicon copolymer obtained in the step (4), the polyether obtained in the step (1), the polyether obtained in the step (2) and a catalyst into a reaction kettle, reacting at 90-110 ℃, generating low-boiling-point substances in the reaction process, removing the substances in time, reacting for 3-5 hours, and neutralizing and filtering to obtain a component B;
or adding the organic silicon copolymer obtained in the step (4), the polyether obtained in the step (1), the polyether obtained in the step (3) and a catalyst into a reaction kettle, reacting at the temperature of 90-110 ℃, generating low-boiling-point substances in the reaction process, removing the low-boiling-point substances in time, reacting for 3-5 hours, and neutralizing and filtering to obtain the component B.
Further, uniformly mixing the component A and the component B, and mixing and stirring the component A and the component B for 2 hours at the temperature of 40-60 ℃, wherein the component A accounts for 70-95% of the total mass, and the polyurethane foam stabilizer is obtained.
The polyurethane foam stabilizer can be used for preparing polyurethane foam, and is particularly used for preparing common soft foam sponge or slow-rebound soft foam sponge.
When the polyurethane foam stabilizer is used, polyether polyol, a catalyst, water, a polyurethane foam stabilizer and a solvent are mixed and stirred, then an isocyanate compound is added, and the mixture is stirred and cured to obtain the polyurethane foam with fine and smooth pores and high air permeability.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, by adjusting the structure of the polyurethane foam stabilizer, the polyurethane foam stabilizer has better nucleation performance and opening performance, so that bubble holes are finer; the raw materials used by the invention have simple structure and low cost.
The polyurethane foam stabilizer prepared by the invention can be used in the field of common or slow-rebound soft foam sponge, and can reduce the surface tension of each component, increase the compatibility of each component, and control the size, uniformity and opening performance of bubbles in a polyurethane foaming system.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
A polyurethane foam stabilizer having excellent cell properties is obtained by mixing a component A and a component B.
And (2) component A:
(1) To a 500ml round bottom flask equipped with a mechanical stirrer, a dry nitrogen line and a reflux condenser185.0g of an allyl-starting ester-terminated polyether having an average molecular weight of 4000 (which polyether contains 50 mol% of ethyleneoxy groups), 35.0g of an allyl-starting ester-terminated polyether having an average molecular weight of 500 (which polyether contains 50 mol% of ethyleneoxy groups), 75.0g of a polyorganosiloxane (MD) 65 D’ 5 M), 200ppm of NN-dimethylmethanolamine. Stirring the mixture in nitrogen atmosphere, heating to 85-90 ℃, preserving heat for 0.5h, adding 10ppm chloroplatinic acid, and preserving heat for 3h to obtain clear and transparent light brown liquid. Cooling to 40-60 deg.c, and adding dipropylene glycol 150.0g to obtain component A, number SPA1.
(2) To a 500ml round bottom flask equipped with a mechanical stirrer, a dry nitrogen line and a reflux condenser were added 125.0g of an allyl polyether with an average molecular weight of 3000 (this polyether contains 60 mole% of ethyleneoxy groups), 100.0g of an allyl-initiated methyl-terminated polyether with an average molecular weight of 1000 (this polyether contains 50 mole% of ethyleneoxy groups), 75.0g of a polyorganosiloxane (MD) 85 D’ 9 M), 100ppm of NN-dimethylmethanolamine. Stirring the mixture in nitrogen atmosphere, heating to 85-90 ℃, preserving heat for 0.5h, adding 10ppm chloroplatinic acid, and preserving heat for 3h to obtain clear and transparent light brown liquid. Cooling to 40-60 deg.c and adding 100.0g diethylene glycol to obtain component A, SPA2.
And (B) component:
(1) Adding 2 parts by weight of n-butyl alcohol, 19 parts by weight of ethylene oxide and 8 parts by weight of propylene oxide into a reaction kettle, controlling the reaction temperature to be 90-120 ℃ and the reaction pressure to be below 1MPa under the action of 0.01 part by weight of an alkaline catalyst, reacting for 6 hours, and carrying out refining treatment such as neutralization and filtration to obtain the polyether with one end being n-butyl and the other end being hydroxyl. The polyether has a molecular weight of 1000, with an EO content of about 70% by weight, and is numbered PE1.
(2) Adding 1-3 parts by weight of ethylene glycol, 5-30 parts by weight of ethylene oxide and 2-40 parts by weight of propylene oxide into a reaction kettle, controlling the reaction temperature to be 90-120 ℃ and the reaction pressure to be below 1MPa under the action of 0.01-0.2 part by weight of an alkaline catalyst, reacting for 3-8 hours, and carrying out refining treatment such as neutralization and filtration to obtain polyether with two hydroxyl groups at two ends;
two polyether samples were synthesized according to the procedure of step (2) with the parameters as shown in the following table:
| sample numbering | Molecular weight of polyether | EO content in the sample is% by weight |
| PE2-1 | 1000 | 70 |
| PE2-2 | 1000 | 50 |
(3) Adding 1-2 parts by weight of glycerol, 5-20 parts by weight of ethylene oxide and 2-20 parts by weight of propylene oxide into a reaction kettle, controlling the reaction temperature to be 90-120 ℃ and the reaction pressure to be below 1MPa under the action of 0.01-0.2 part by weight of an alkaline catalyst, reacting for 3-8 hours, and carrying out refining treatment such as neutralization, filtration and the like to obtain trifunctional polyether;
two polyether samples were synthesized according to the procedure of step (3) with the parameters shown in the following table:
| sample numbering | Molecular weight of polyether | EO content in the sample is% by weight |
| PE3-1 | 1500 | 70 |
| PE3-2 | 1500 | 50 |
(4) Adding 1-5 parts by weight of methyltrimethoxysilane and 2-10 parts by weight of octamethylcyclotetrasiloxane into a reaction kettle, reacting for 4-10 hours at the reaction temperature of 90-110 ℃ under the action of 0.001-0.01 part by weight of alkaline catalyst, and neutralizing, filtering and the like to obtain an organic silicon copolymer with a branched chain structure;
the alkaline catalyst in the step is potassium hydroxide, sodium hydroxide or tetramethyl ammonium hydroxide;
two samples of silicone copolymer were synthesized according to the procedure of step (4) with the parameters shown in the following table:
| sample numbering | Molecular weight of the Silicone copolymer | In each branch chain (CH 3) 2 Number of SiO |
| S1 | 1900 | 8 |
| S2 | 2350 | 10 |
(5) Mixing the organic silicon copolymer obtained in the step (4) with the polyether obtained in the step (2)/the step (3) in a reaction kettle, adding a catalyst, reacting at 90-110 ℃, removing low-boiling-point substances generated in the reaction process in time, reacting for 0.5-2 hours, adding the polyether obtained in the step (1), continuously reacting for 1-3 hours, continuously removing the low-boiling-point substances in the process, and then neutralizing and filtering to obtain the component B.
Synthesizing five products of the component B according to the process of the step (5):
| sample numbering | Silicone copolymers | Butyl polyether | Bishydroxy polyether | Trihydroxy polyether | Mass ratio of |
| SPB1 | S1 | P1 | P2-1 | 3:4:1 | |
| SPB2 | S1 | P1 | P2-2 | 1:1:2 | |
| SPB3 | S1 | P1 | P3-1 | 2:3:1 | |
| SPB4 | S2 | P1 | P3-1 | 5:6:2 | |
| SPB5 | S2 | P1 | P3-2 | 7:6:4 |
Mixing the component A and the component B according to the following table, and stirring for 2 hours at the temperature of 40-60 ℃ to obtain the polyurethane foam stabilizer.
The polyurethane foam stabilizers of the examples and commercially available products having excellent cells (AK-6698LV, AK-6628LV, AK-6644 LV) of Jiangsumeisi chemical Co., ltd were subjected to foaming evaluation according to the following formulation.
The procedure for preparing the foam was as follows: adding polyether polyol into a plastic cup, and controlling the temperature of the polyol to be maintained at 21.5-22.5 ℃; adding water, organosilicon surfactant and amine catalyst, and stirring the mixture at 2000r/m for 20s; adding a metal catalyst, and stirring at 2000r/m for 20s; toluene diisocyanate maintained at 21.5-22.5 ℃ was poured in, stirred at 2000r/m for 7s, the mixture was poured into a cube mold 28.5cm, the plastic cup was kept inverted and pouring was continued for 7s. And (3) starting to react the foam, continuously rising, recording the highest rising height of the foam, the foam jumping time and the height after retraction, and standing the foam. Placing the foam into an oven with the temperature of 80-100 ℃ for curing for 1h; the foam was taken out of the oven and cooled for at least 0.5h. And foam testing was performed according to ASTM D3574-17.
| Cell structure | Is very coarse | Coarse | In | Thin and thin | Is very thin |
| Number of cells/cm | ＜7 | 7～9 | 10～12 | 13～16 | ＞16 |
As can be seen from the comparison, the foam structure and the air permeability of the polyurethane foam stabilizer prepared in the embodiment are far better than those of the existing mature products in the market.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A polyurethane foam stabilizer having excellent cell properties, characterized in that: the adhesive is prepared by mixing a component A and a component B, wherein the chemical structure of the component A is as follows:
wherein x =60 to 100, y =3 to 10,
R 1 the general structural formula is (CH) 2 ) p (OC 2 H 4 ) g (OC 3 H 6 ) h OR 2 Wherein p = 2-4,g = 10-40, h = 0-40; r is 2 Is H, -CH 3 or-C (O) CH 3 ；
The chemical structure of the component B is shown as follows:
wherein R is a Is an organosilicon chain segment with a structure of CH 3 Si[O(Si(CH 3 ) 2 ) m O-] 3 Wherein m =1 to 15; r b Is a polyether segment.
2. The polyurethane foam stabilizer having excellent cell properties according to claim 1, characterized in that: r b Is a monofunctional polyether chain segment or a multifunctional polyether chain segment.
3. The polyurethane foam stabilizer having excellent cell properties according to claim 2, characterized in that: r is b Is a monofunctional polyether segment having the general formula C n H 2n+1 O(C 2 H 4 O) a (C 3 H 6 O) b Where n =1 to 6, a =5 to 20, and b =5 to 25.
4. The polyurethane foam stabilizer having excellent cell properties according to claim 2, characterized in that: r b Is a multifunctional polyether segment with the general formula of-O (C) 2 H 4 O) c (C 3 H 6 O) d -, where c = 5E30，d＝5～40；
Or
Wherein e =5 to 20, f =5 to 20.
5. A process for preparing a polyurethane foam stabilizer according to any one of claims 1 to 4, characterized in that: the preparation method of the component A in the polyurethane foam stabilizer comprises the following steps:
(1) Adding allyl polyether, polyorganosiloxane and an organic amine auxiliary agent into a round-bottom flask provided with a mechanical stirrer, a dry nitrogen pipeline and a reflux condenser pipe, preserving the temperature for 10-30 min at 80-90 ℃, adding a platinum catalyst, and carrying out grafting reaction to obtain polyether modified polysiloxane;
(2) Adding dipropylene glycol and diethylene glycol into the polyether modified polysiloxane to obtain the component A.
6. The process for producing a polyurethane foam stabilizer according to claim 5, wherein: the preparation method of the component B in the polyurethane foam stabilizer comprises the following steps:
(1) Adding 1-5 parts by weight of n-butyl alcohol, 5-25 parts by weight of ethylene oxide and 2-30 parts by weight of propylene oxide into a reaction kettle, reacting for 3-8 hours under the action of 0.01-0.2 part by weight of an alkaline catalyst and at the reaction temperature of 90-120 ℃ and the reaction pressure of below 1MPa, and neutralizing, filtering and refining to obtain n-butyl initiated polyether;
(2) Adding 1-3 parts by weight of ethylene glycol, 5-30 parts by weight of ethylene oxide and 2-40 parts by weight of propylene oxide into a reaction kettle, reacting for 3-8 hours under the action of 0.01-0.2 part by weight of an alkaline catalyst and at the reaction temperature of 90-120 ℃ and the reaction pressure of below 1MPa, and neutralizing, filtering and refining to obtain dihydroxy polyether;
(3) Adding 1-2 parts by weight of glycerol, 5-20 parts by weight of ethylene oxide and 2-20 parts by weight of propylene oxide into a reaction kettle, controlling the reaction temperature to be 90-120 ℃ and the reaction pressure to be below 1MPa under the action of 0.01-0.2 part by weight of an alkaline catalyst, reacting for 3-8 hours, and neutralizing, filtering and refining to obtain trifunctional polyether;
(4) Adding 1-5 parts by weight of methyltrimethoxysilane and 2-10 parts by weight of octamethylcyclotetrasiloxane into a reaction kettle, reacting for 4-10 hours at the reaction temperature of 90-110 ℃ under the action of 0.001-0.01 part by weight of alkaline catalyst, and neutralizing and filtering to obtain an organic silicon copolymer with a branched chain structure; the alkaline catalyst is potassium hydroxide, sodium hydroxide or tetramethyl ammonium hydroxide;
(5) Adding the organic silicon copolymer obtained in the step (4), the polyether obtained in the step (1), the polyether obtained in the step (2) and a catalyst into a reaction kettle, reacting at the temperature of 90-110 ℃, generating low-boiling-point substances in the reaction process, removing the low-boiling-point substances in time, reacting for 3-5 hours, and neutralizing and filtering to obtain a component B;
or adding the organic silicon copolymer obtained in the step (4), the polyether obtained in the step (1), the polyether obtained in the step (3) and a catalyst into a reaction kettle, reacting at 90-110 ℃, generating low-boiling-point substances in the reaction process, removing the low-boiling-point substances in time, reacting for 3-5 hours, and neutralizing and filtering to obtain the component B.
7. The process for producing a polyurethane foam stabilizer according to claim 6, wherein: uniformly mixing the component A and the component B, and mixing and stirring the component A and the component B for 2 hours at the temperature of 40-60 ℃, wherein the component A accounts for 70-95% of the total mass, and the polyurethane foam stabilizer is obtained.
8. Use of a polyurethane foam stabilizer according to any one of claims 1 to 4 for the preparation of a polyurethane foam.
9. Use of the polyurethane foam stabilizer according to claim 8 for the preparation of polyurethane foam, wherein: the polyurethane foam is common soft foam sponge or slow rebound soft foam sponge.
10. Use of the polyurethane foam stabilizer according to claim 8 for the preparation of polyurethane foam, wherein: mixing polyether polyol, a catalyst, water, a polyurethane foam stabilizer and a solvent, stirring, adding an isocyanate compound, stirring, and curing to obtain the polyurethane sponge with fine foam pores and high air permeability.
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| CN109134809A (en) * | 2018-08-07 | 2019-01-04 | 苏州思德新材料科技有限公司 | A kind of pore type polyurethane foam material and preparation method thereof |
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| US3793360A (en) * | 1971-04-08 | 1974-02-19 | Union Carbide Corp | Organosilicone polymers |
| US5045571A (en) * | 1988-11-07 | 1991-09-03 | Union Carbide Chemicals And Plastics Technology Corporation | Silicone polyether copolymers and polyurethane foams prepared therefrom |
| CN109134809A (en) * | 2018-08-07 | 2019-01-04 | 苏州思德新材料科技有限公司 | A kind of pore type polyurethane foam material and preparation method thereof |
| CN109851843A (en) * | 2018-12-25 | 2019-06-07 | 南京美思德新材料有限公司 | A kind of flexible polyurethane foams that Density Distribution is excellent |
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