CN115505095B - Open-cell type single-component polyurethane foam joint mixture and preparation method thereof - Google Patents
Open-cell type single-component polyurethane foam joint mixture and preparation method thereof Download PDFInfo
- Publication number
- CN115505095B CN115505095B CN202211294068.6A CN202211294068A CN115505095B CN 115505095 B CN115505095 B CN 115505095B CN 202211294068 A CN202211294068 A CN 202211294068A CN 115505095 B CN115505095 B CN 115505095B
- Authority
- CN
- China
- Prior art keywords
- parts
- polyether polyol
- polyurethane foam
- component polyurethane
- surfactant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
-
- 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
-
- 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
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- 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
-
- 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
- C08J2375/08—Polyurethanes from polyethers
-
- 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
- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
- C08J2491/06—Waxes
Abstract
The invention discloses an open-cell type single-component polyurethane foam joint mixture and a preparation method thereof, and relates to the technical field of foam joint mixtures. By introducing various polyether polyols and various organic silicon surfactants into the formula system of the single-component polyurethane foam joint mixture, under the combined action of the polyether polyols and the organic silicon surfactants, foam cells prepared by the single-component polyurethane foam joint mixture are fine and smooth, have good opening property and good dimensional stability, particularly have obvious improvement on the dimensional stability under high-temperature conditions, and can be widely used for sealing and plugging between plastic steel or aluminum alloy doors and windows and walls in building construction.
Description
Technical Field
The invention relates to the technical field of foam caulking agents, in particular to an open-cell type single-component polyurethane foam caulking agent and a preparation method thereof.
Background
The single-component polyurethane foam joint mixture is commonly called as foaming glue, foaming agent and the like, and is a product of combining an aerosol technology and a polyurethane foam technology, wherein the English of the single-component polyurethane foam joint mixture is One Component Foam (OCF). The single-component polyurethane foam joint mixture is prepared from polyether polyol, a catalyst, an organosilicon surfactant, a filler, isocyanate, a solvent, a propellant and other raw materials, and has the advantages of environmental protection, energy saving, convenient use, wide application in plastic steel or aluminum alloy doors and windows in building construction, and wide application in sealing and plugging between walls.
However, the existing single-component polyurethane foam joint mixture is extremely easy to generate foam shrinkage deformation in the construction process in summer or high-temperature and high-humidity environment, and the situation that the foam dimensional stability cannot meet the construction requirement is not reported. Therefore, there is a need to develop an open-celled one-component polyurethane foam caulking agent excellent in dimensional stability and suitable for use in summer or high-temperature and high-humidity environments.
In view of this, the present invention has been made.
Disclosure of Invention
The invention aims to provide an open-cell type single-component polyurethane foam joint mixture and a preparation method thereof, and aims to prepare the joint mixture which is good in open cell property and not easy to shrink, and the dimensional stability of the joint mixture to high temperature conditions is remarkably improved.
The invention is realized in the following way:
in a first aspect, the invention provides an open-cell type single-component polyurethane foam joint mixture, which comprises the following raw materials in parts by weight: 90-160 parts of combined polyether polyol, 8-12 parts of combined organosilicon surfactant, 3-8 parts of catalyst, 170-260 parts of filler, 40-80 parts of solvent, 50-90 parts of propellant and 200-280 parts of isocyanate;
wherein the combined polyether polyol comprises 10-50 parts of polyether polyol A, 10-40 parts of polyether polyol B, 50-90 parts of polyether polyol C and 0-15 parts of polyether polyol D; the hydroxyl value of the polyether polyol A is 150-190mgKOH/g, and the functionality is 3; the hydroxyl value of the polyether polyol B is 320-360mgKOH/g, and the functionality is 3; the hydroxyl value of the polyether polyol C is 260-300mgKOH/g, and the functionality is 2; the hydroxyl value of the polyether polyol D is 50-60mgKOH/g, and the functionality is 3;
the combined organic silicon surfactant comprises a surfactant A and a surfactant B, wherein the mass ratio of the surfactant A to the surfactant B is 3:7-7:3;
the structure of the surfactant A is as follows:
(CH 3 ) 3 Si-O-[Si(CH 3 ) 2 O] m -[Si(CH 3 )RO] n -Si(CH 3 ) 3 ；
in the structural formula, m=10-45; n=2-5;
R＝CH 2 CH 2 CH 2 O(CH 2 CH 2 O) x (CH 2 CHCH 3 O) y OH, x is 10-25, and y is 5-10;
the structure of the surfactant B is as follows:
(CH 3 ) 3 Si-O-[Si(CH 3 ) 2 O] m1 -[Si(CH 3 )R 1 O] n1 -[Si(CH 3 )R 2 O] q1 -Si(CH 3 ) 3
m 1 ＝50-90；n 1 ＝3-15；q 1 ＝1-5；
R 1 ＝CH 2 CH 2 CH 2 O(CH 2 CH 2 O) x1 (CH 2 CHCH 3 O) y1 OH，x 1 has a value of 15-30, y 1 Has a value of 1 to 10;
R 2 ＝CH 2 CH 2 CH 2 O(CH 2 CH 2 O) x2 (CH 2 CHCH 3 O) y2 OR 3 ，x 2 has a value of 15-30, y 2 Has a value of 1 to 10; r is R 3 ＝-C 11 H 5 F 17 OH。
In an alternative embodiment of the invention, the raw materials comprise, in parts by weight: 110-150 parts of combined polyether polyol, 9-11 parts of combined organic silicon surfactant, 4-6 parts of catalyst, 180-250 parts of filler, 50-70 parts of solvent, 60-80 parts of propellant and 220-260 parts of isocyanate;
wherein the combined polyether polyol comprises 20-40 parts of polyether polyol A, 15-30 parts of polyether polyol B, 60-80 parts of polyether polyol C and 5-10 parts of polyether polyol D; the mass ratio of the surfactant A to the surfactant B is 4:6-6:4.
In an alternative embodiment of the invention, polyether polyol A, polyether polyol B, polyether polyol C and polyether polyol D are all polyhydroxy organic polymers derived from the reaction of ethylene oxide and/or propylene oxide with an initiator; the initiator is one or more compounds containing active hydrogen;
preferably, the initiator is a polyhydroxy compound having 2 to 16 hydroxyl groups;
more preferably, the initiator is selected from at least one of aliphatic amines and aromatic amines.
In an alternative embodiment of the invention, the catalyst is dimorpholine diethyl ether.
In an alternative embodiment of the present invention, the filler is chlorinated paraffin 52#.
In an alternative embodiment of the invention, the solvent is dimethyl ether.
In an alternative embodiment of the invention, the propellant is propane.
In an alternative embodiment of the invention, the isocyanate is a polymethylene polyphenyl polyisocyanate.
In a second aspect, the invention also provides a method for preparing the open-cell type single-component polyurethane foam joint mixture, which comprises the following steps: the raw materials of the open-cell type single-component polyurethane foam joint mixture are used for preparation.
In an alternative embodiment of the invention, the method of preparation comprises the steps of:
weighing and mixing the combined polyether polyol, the combined organic silicon surfactant, the catalyst and the filler according to parts by weight, and adding the mixture into a pressure-resistant aerosol can to be mixed with isocyanate;
sealing the pressure-resistant aerosol can, filling a solvent by using an inflator, and then filling a propellant for shaking;
and (3) placing the pressure-resistant aerosol can in an atmosphere of 40-60 ℃ for reaction for 20-28h.
The invention has the following beneficial effects: by introducing various polyether polyols and various organic silicon surfactants into the formula system of the single-component polyurethane foam joint mixture, under the combined action of the polyether polyols and the organic silicon surfactants, foam cells prepared by the single-component polyurethane foam joint mixture are fine and smooth, have good opening property and good dimensional stability, particularly have obvious improvement on the dimensional stability under high-temperature conditions, and can be widely used for sealing and plugging between plastic steel or aluminum alloy doors and windows and walls in building construction.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
The embodiment of the invention provides an open-cell type single-component polyurethane foam joint mixture, which comprises the following raw materials in parts by weight: 90-160 parts of combined polyether polyol, 8-12 parts of combined organosilicon surfactant, 3-8 parts of catalyst, 170-260 parts of filler, 40-80 parts of solvent, 50-90 parts of propellant and 200-280 parts of isocyanate. By introducing a plurality of polyether polyols and a plurality of organosilicon surfactants into a formula system, under the combined action of the polyether polyols and the organosilicon surfactants, foam cells prepared by the single-component polyurethane foam joint filling agent are fine and smooth, the openness is good, and the dimensional stability is good; the amount of each component is preferably controlled within the above range to further improve the cell opening property and dimensional stability of the foam.
Wherein, the total consumption is controlled in the above range, the combined polyether polyol comprises 10-50 parts of polyether polyol A, 10-40 parts of polyether polyol B, 50-90 parts of polyether polyol C and 0-15 parts of polyether polyol D. The hydroxyl value of the polyether polyol A is 150-190mgKOH/g, and the functionality is 3; the hydroxyl value of the polyether polyol B is 320-360mgKOH/g, and the functionality is 3; the hydroxyl value of the polyether polyol C is 260-300mgKOH/g, and the functionality is 2; the hydroxyl value of the polyether polyol D is 50-60mgKOH/g, and the functionality is 3. The inventor adopts the four polyether polyols to match and combine the organic silicon surfactant, so that the foam stability can be well improved, and the high-temperature environment can be adapted.
Specifically, the hydroxyl value of polyether polyol A may be 150mgKOH/g, 160mgKOH/g, 170mgKOH/g, 180mgKOH/g, 190mgKOH/g, etc.; the hydroxyl value of polyether polyol B may be 320mgKOH/g, 330mgKOH/g, 340mgKOH/g, 350mgKOH/g, 360mgKOH/g, etc.; the hydroxyl value of the polyether polyol C may be 260mgKOH/g, 270mgKOH/g, 280mgKOH/g, 290mgKOH/g, 300mgKOH/g, etc.; the hydroxyl value of the polyether polyol D may be 50mgKOH/g, 55mgKOH/g, 60mgKOH/g, etc.
The combined organic silicon surfactant comprises a surfactant A and a surfactant B, and the mass ratio of the surfactant A to the surfactant B is 3:7-7:3 on the premise that the total dosage is controlled within the range, for example, the mass ratio can be 3:7, 4:6, 5:5, 6:4, 7:3 and the like, and can also be any value between the ratio values.
The structure of the surfactant A is as follows:
(CH 3 ) 3 Si-O-[Si(CH 3 ) 2 O] m -[Si(CH 3 )RO] n -Si(CH 3 ) 3 ；
in the structural formula, m=10-45 (such as 10, 15, 20, 30, 35, 40, 45, etc.);
n=2-5 (e.g., 2, 3, 4, 5, etc.);
R＝CH 2 CH 2 CH 2 O(CH 2 CH 2 O) x (CH 2 CHCH 3 O) y OH, x has a value of 10-25 (e.g., 10, 15, 20, 25, etc.), and y has a value of 5-10 (e.g., 5, 6, 7, 8, 9, 10, etc.);
the structure of the surfactant B is as follows:
(CH 3 ) 3 Si-O-[Si(CH 3 ) 2 O] m1 -[Si(CH 3 )R 1 O] n1 -[Si(CH 3 )R 2 O] q1 -Si(CH 3 ) 3
m 1 =50-90 (e.g., 50, 60, 70, 80, 90, etc.);
n 1 =3-15 (e.g. 3, 5, 10, 15, etc.);
q 1 =1-5 (e.g. 1, 2, 3, 4, 5, etc.);
R 1 ＝CH 2 CH 2 CH 2 O(CH 2 CH 2 O) x1 (CH 2 CHCH 3 O) y1 OH，x 1 has a value of 15-30 (e.g., 15, 20, 25, 30, etc.), y 1 A value of 1-10 (e.g., 1, 3, 5, 7, 10, etc.);
R 2 ＝CH 2 CH 2 CH 2 O(CH 2 CH 2 O) x2 (CH 2 CHCH 3 O) y2 OR 3 ，x 2 has a value of 15-30 (e.g., 15, 20, 25, 30, etc.), y 2 A value of 1-10 (e.g., 1, 3, 5, 7, 10, etc.); r is R 3 ＝-C 11 H 5 F 17 OH。
The surfactant a and the surfactant B may be commercially available materials, or may be synthesized according to the patents CN109867790a and CN 110982080A, respectively.
In a preferred embodiment, the raw materials comprise, in parts by weight: 110-150 parts of combined polyether polyol, 9-11 parts of combined organic silicon surfactant, 4-6 parts of catalyst, 180-250 parts of filler, 50-70 parts of solvent, 60-80 parts of propellant and 220-260 parts of isocyanate; wherein the combined polyether polyol comprises 20-40 parts of polyether polyol A, 15-30 parts of polyether polyol B, 60-80 parts of polyether polyol C and 5-10 parts of polyether polyol D; the mass ratio of the surfactant A to the surfactant B is 4:6-6:4. The amount of each component is optimized to further improve the aperture ratio and the dimensional stability of the prepared foam.
Further, polyether polyol A, polyether polyol B, polyether polyol C and polyether polyol D are polyhydroxy organic polymers obtained by reacting ethylene oxide and/or propylene oxide with an initiator, and can be commercially available raw materials; the initiator is one or more active hydrogen-containing compounds, which can be obtained by reacting ethylene oxide with the initiator, can be obtained by reacting propylene oxide with the initiator, or can be obtained by reacting ethylene oxide and propylene oxide with the initiator. The initiator is a polyhydroxy compound having 2 to 16 hydroxyl groups, and may be an aliphatic amine or an aromatic amine.
In some embodiments, the catalyst is dimorpholine diethyl ether, and the dimorpholine diethyl ether is readily available as a starting material, which can facilitate faster reaction to give a prepolymer.
In some embodiments, the filler is chlorinated paraffin 52#.
In some embodiments, the solvent is dimethyl ether, which is readily available and less toxic as a raw material.
In some embodiments, the propellant is propane and butane, and is a mixture of propane and butane.
In some embodiments, the isocyanate is a polymethylene polyphenyl polyisocyanate, more suitable for use in preparing polyurethane foam caulks.
The embodiment of the invention also provides a preparation method of the open-cell type single-component polyurethane foam joint mixture, which comprises the following steps: the raw materials of the open-cell type single-component polyurethane foam joint mixture can be prepared by adopting the existing preparation process, and the preparation process is not limited.
In some embodiments, the method of preparation comprises the steps of:
(1) Weighing the combined polyether polyol, the combined organic silicon surfactant, the catalyst and the filler according to parts by weight, mixing, and adding into a pressure-resistant aerosol can to mix with isocyanate. In the actual operation process, when the combined polyether polyol, the combined organic silicon surfactant, the catalyst and the filler are mixed, the stirring rotation speed can be controlled to be 4000-5000 r/min, and the mixing time is 3-5 min.
(2) Sealing the pressure-resistant aerosol can, filling a solvent by using an inflator, and then filling a propellant for shaking. In the actual operation process, a sealing machine can be adopted to seal a pressure-resistant aerosol can (which can be a gun type valve or a tubular valve), and after the filling weight parts of dimethyl ether and propane and butane are arranged on the double-head inflator, the solvent dimethyl ether is filled first, and then the propellant propane and butane are filled; after filling, the mixture is manually shaken for 3 to 8 minutes.
(3) The high-pressure aerosol can is placed in an atmosphere of 40-60 ℃ for reaction for 20-28 hours to promote the formation of prepolymer. In particular, the reaction process may be completed in an oven. Through the compatibilization of the solvent dimethyl ether, polyether polyol and excessive isocyanate are dispersed homogeneously in the system and reacted under the action of catalyst to form polyurethane prepolymer containing NCO radical.
During construction, the pressure-resistant aerosol can is taken out of the oven, and is placed for 5-8 hours at normal temperature, and then foam is beaten out by a gun method or a pipe method. When the polyurethane prepolymer is used, the polyurethane prepolymer is sprayed out of the aerosol can by a gun method or a tubular method by means of the pressure of propellant propane, and the material can rapidly expand and react with air or moisture in a contacted matrix in a solidification way to form foam. The solidified foam has various effects such as adhesion, sealing, water resistance, heat insulation, sound insulation and the like.
In order to better test the performance of the caulking agent prepared by the embodiment of the invention, the opened foam can be placed under normal temperature conditions (20-25 ℃, 45-55% RH, 40-50 h) and high temperature conditions (40-45 ℃, 85-95% RH, 20-24 h) respectively, the condition of the cells inside the final foam is observed, and the dimensional stability and the open cell content of the foam are tested.
The features and capabilities of the present invention are described in further detail below in connection with the examples.
Examples 1 to 6
Examples 1-6 all provide a preparation method of an open-cell single-component polyurethane foam joint mixture, and the preparation methods provided in examples 1-6 have the same operation steps, and are only different in combination and proportion of raw materials, and the specific method is as follows:
(1) Weighing the components such as the combined polyether polyol, the catalyst, the combined organic silicon surfactant, the filler and the like according to parts by weight, stirring at a speed of 4500r/min, mixing for 5min, and adding into a pressure-resistant aerosol can; then the isocyanate weighed according to the weight parts is also put into a pressure-resistant aerosol can;
(2) Sealing the pressure-resistant aerosol can (gun valve) by using a sealing machine, and after the filling weight parts of dimethyl ether and propane and butane are arranged on the double-head inflator, firstly filling solvent dimethyl ether and then filling propellant propane and butane; after filling, manually shaking for 5min;
(3) The pressure-resistant aerosol can was placed in a 50 ℃ oven and stored for 24 hours to promote prepolymer formation.
The performance test method comprises the following steps: taking out the pressure-resistant aerosol canister from the oven, standing at normal temperature for 6h, and then beating foam by gun method, and respectively standing at normal temperature (23 deg.C, 45% RH,48 h) and high temperature (40 deg.C, 90% RH,24 h). The internal cells of the final foam were observed for conditions and tested for dimensional stability and foam open cell content, with the test criteria shown in table 1.
Table 1 test criteria
| Project | Unit (B) | Standard of |
| Normal temperature bubble | Dividing into | ≥2.5 |
| High temperature cell | Dividing into | ≥2.8 |
| Average dimensional stability at Normal temperature | ％ | ＜5％ |
| High temperature average dimensional stability | ％ | ＜7％ |
| Opening ratio of | ％ | ＞50％ |
Cell scoring: the higher the score, the finer the cells are, the score ranges from 1.0 to 5.0; conversely, the coarser the cells.
Average dimensional stability: dimensional stability= (final size-initial size)/initial size×100%; dimensional stability at different temperatures is tested under different temperature conditions, and the lower the numerical value is, the better the dimensional stability is; conversely, the poorer the dimensional stability.
Opening ratio: the higher the open cell content value, the better the open cell performance of the foam; conversely, the poorer the opening performance.
The combined polyether polyols used in examples 1-6 were polyether polyol A (hydroxyl number 168.3mgKOH/g, functionality 3, de Federation), polyether polyol B (hydroxyl number 336.6mgKOH/g, functionality 3, de Federation), polyether polyol C (hydroxyl number 280.5mgKOH/g, functionality 2, de Federation), polyether polyol D (hydroxyl number 56.3mgKOH/g, functionality 3, norwegian);
the combined organic silicon surfactant is a surfactant A and a surfactant B, which are synthesized according to the patent CN109867790A and CN 110982080A respectively, and the specific structure of the organic silicon surfactant is shown in the table 2:
TABLE 2 specific Structure of organosilicon surfactant
The catalyst used was dimorpholine diethyl ether MAYCAT DMDEE (Jiangsu Meissun);
the filler is chlorinated paraffin 52#;
the solvent is dimethyl ether;
the propellant is propane and butane;
the isocyanate is polymethylene polyphenyl polyisocyanate PM-200 (Vanilla);
the types and amounts of the raw materials used in examples 1 to 6 are shown in Table 3:
TABLE 3 one-component polyurethane foam joint compound raw materials, amounts and application Properties examples 1-6
Comparative examples 1 to 6
One-part polyurethane foam caulks were prepared by the method described in examples 1-6 above, except that the ratio of the combined silicone surfactants was varied, with the total amount being unchanged, see in particular Table 4.
TABLE 4 Single component polyurethane foam joint compound raw materials, amounts and application Properties of comparative examples 1-6
It should be noted that comparative examples 1 to 6 are single factor comparative examples of examples 1 to 6, respectively, except that the ratio of the combined silicone surfactants was changed, and comparative examples 1 to 6 did not change the total amount of the combined silicone surfactants based on examples 1 to 6, but a single kind of silicone surfactant was used.
From the test results, the cell scores of comparative examples 1 to 6 are low, the requirements cannot be met, the requirements of the cells, the stability and the aperture ratio cannot be met, the cell score with higher aperture ratio is obviously reduced, the comprehensive performance is obviously inferior to that of examples 1 to 6, and the synergistic effect of the combination proportion of the two organosilicon surfactants provided by the examples of the invention is proved.
Comparative examples 7 to 12
One-part polyurethane foam caulks were prepared by the method described in examples 1-6 above, except for the polyether polyol raw material and amounts, see in particular Table 5.
TABLE 5 Single component polyurethane foam joint compound raw materials, amounts and application Properties of comparative examples 7-12
It should be noted that comparative examples 7 to 12 are single factor comparative examples of examples 1 to 6, respectively, except that the raw materials and amounts of the combined polyether polyols were changed, and comparative examples 7 to 12 did not change the total amount of the combined polyether polyols based on examples 1 to 6, but the number of varieties of polyether polyols was reduced, and only two or three kinds of polyether polyols were selected.
From the test results, the open cell content and stability of comparative examples 7-12 are worse than those of the examples, and the obvious bubble collapse phenomenon is present, which proves that the proportions of the four polyether polyols provided by the examples of the invention have synergistic effect.
Comparative examples 13 to 18
One-component polyurethane foam joint compound was prepared by the method described in examples 1-6 above, except that the silicone surfactant structure was as specified in Table 6, and comparative examples 13-18 were as raw materials, amounts and application properties were as specified in Table 7.
TABLE 6 organosilicon surfactant structure
TABLE 7 Single component polyurethane foam joint compound raw materials, amounts and application Properties of comparative examples 13-18
It should be noted that comparative examples 13 to 18 are single factor comparative examples of examples 1 to 6, respectively, differing only in that the silicone surfactant structure was changed, and comparative examples 13 to 18 did not change the total amount of the combined silicone surfactants based on examples 1 to 6.
From the test results, the open cell content and stability of comparative examples 13-18 are inferior to those of examples, and the obvious bubble collapse phenomenon is present, which proves that the structures of the two organosilicon surfactants provided by the examples of the invention have synergistic effect.
According to the above, the foam cells prepared by the single-component polyurethane foam caulking agent combining the organosilicon surfactants A and B are fine, have high aperture ratio and good dimensional stability, and can basically meet the requirement of the single-component polyurethane foam caulking agent on the open cell property of the foam.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. The open-cell type single-component polyurethane foam joint mixture is characterized by comprising the following raw materials in parts by weight: 90-160 parts of combined polyether polyol, 8-12 parts of combined organosilicon surfactant, 3-8 parts of catalyst, 170-260 parts of filler, 40-80 parts of solvent, 50-90 parts of propellant and 200-280 parts of isocyanate;
wherein the combined polyether polyol comprises 10-50 parts of polyether polyol A, 10-40 parts of polyether polyol B, 50-90 parts of polyether polyol C and 0-15 parts of polyether polyol D; the hydroxyl value of the polyether polyol A is 150-190mgKOH/g, and the functionality is 3; the hydroxyl value of the polyether polyol B is 320-360mgKOH/g, and the functionality is 3; the hydroxyl value of the polyether polyol C is 260-300mgKOH/g, and the functionality is 2; the hydroxyl value of the polyether polyol D is 50-60mgKOH/g, and the functionality is 3;
the combined organic silicon surfactant comprises a surfactant A and a surfactant B, wherein the mass ratio of the surfactant A to the surfactant B is 3:7-7:3;
the structure of the surfactant A is as follows:
(CH 3 ) 3 Si-O-[Si(CH 3 ) 2 O] m -[Si(CH 3 )RO] n -Si(CH 3 ) 3 ；
in the structural formula, m=10-45; n=2-5;
R=CH 2 CH 2 CH 2 O(CH 2 CH 2 O) x (CH 2 CHCH 3 O) y OH, x is 10-25, and y is 5-10;
the structure of the surfactant B is as follows:
(CH 3 ) 3 Si-O-[Si(CH 3 ) 2 O] m1 -[Si(CH 3 )R 1 O] n1 -[Si(CH 3 )R 2 O] q1 -Si(CH 3 ) 3
m 1 =50-90；n 1 =3-15；q 1 =1-5；
R 1 =CH 2 CH 2 CH 2 O(CH 2 CH 2 O) x1 (CH 2 CHCH 3 O) y1 OH，x 1 has a value of 15-30, y 1 Has a value of 1 to 10;
R 2 =CH 2 CH 2 CH 2 O(CH 2 CH 2 O) x2 (CH 2 CHCH 3 O) y2 OR 3 ，x 2 has a value of 15-30, y 2 Has a value of 1 to 10; r is R 3 = -C 11 H 5 F 17 OH；
The polyether polyol A, the polyether polyol B, the polyether polyol C and the polyether polyol D are polyhydroxy organic polymers obtained by reacting ethylene oxide and/or propylene oxide with an initiator; the initiator is one or more active hydrogen-containing compounds.
2. The open-cell, one-component polyurethane foam joint mixture according to claim 1, wherein the raw materials comprise, in parts by mass: 110-150 parts of combined polyether polyol, 9-11 parts of combined organic silicon surfactant, 4-6 parts of catalyst, 180-250 parts of filler, 50-70 parts of solvent, 60-80 parts of propellant and 220-260 parts of isocyanate;
wherein the combined polyether polyol comprises 20-40 parts of polyether polyol A, 15-30 parts of polyether polyol B, 60-80 parts of polyether polyol C and 5-10 parts of polyether polyol D; the mass ratio of the surfactant A to the surfactant B is 4:6-6:4.
3. The open-celled one-component polyurethane foam caulking agent according to claim 1 or 2, wherein said initiator is a polyol having 2 to 16 hydroxyl groups.
4. The open-celled one-component polyurethane foam caulking agent according to claim 3, wherein said initiator is selected from at least one of aliphatic amines and aromatic amines.
5. The open cell, one-component polyurethane foam caulking agent according to claim 1 or 2, wherein said catalyst is dimorpholine diethyl ether.
6. The open cell, one-component polyurethane foam caulking agent according to claim 1 or 2, wherein said filler is chlorinated paraffin 52#.
7. The open cell, one-component polyurethane foam caulking agent according to claim 1 or 2, wherein said solvent is dimethyl ether.
8. The open cell, one-component polyurethane foam caulking agent according to claim 1 or 2, wherein said propellant is propane.
9. The open cell, one-component polyurethane foam caulking agent according to claim 1 or 2, wherein said isocyanate is polymethylene polyphenyl polyisocyanate.
10. A method of preparing an open cell, one-component polyurethane foam caulking agent according to any one of claims 1 to 9 comprising: prepared from the starting material of the open-cell, one-component polyurethane foam joint compound of any one of claims 1 to 9.
11. The preparation method according to claim 10, characterized in that the preparation method comprises the steps of:
weighing the combined polyether polyol, the combined organic silicon surfactant, the catalyst and the filler according to parts by weight, mixing, and adding into a pressure-resistant aerosol can to be mixed with the isocyanate;
sealing the pressure-resistant aerosol can, filling the solvent by using an inflator, and then filling the propellant for shaking;
and placing the pressure-resistant aerosol can in an atmosphere of 40-60 ℃ for reaction for 20-28h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211294068.6A CN115505095B (en) | 2022-10-21 | 2022-10-21 | Open-cell type single-component polyurethane foam joint mixture and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211294068.6A CN115505095B (en) | 2022-10-21 | 2022-10-21 | Open-cell type single-component polyurethane foam joint mixture and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115505095A CN115505095A (en) | 2022-12-23 |
| CN115505095B true CN115505095B (en) | 2023-09-29 |
Family
ID=84510617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211294068.6A Active CN115505095B (en) | 2022-10-21 | 2022-10-21 | Open-cell type single-component polyurethane foam joint mixture and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115505095B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1338275A (en) * | 1970-04-09 | 1973-11-21 | Dow Chemical Co | Process for making a polyurethane foam |
| WO2006089471A1 (en) * | 2005-02-24 | 2006-08-31 | Shanghai Haohai Chemical Co., Ltd. | One-component polyurethane foam having low shrinkage, and its preparation |
| CN101067072A (en) * | 2007-06-05 | 2007-11-07 | 任洪青 | Sealing agent of single component polyurethane foam |
| CN105860084A (en) * | 2016-06-14 | 2016-08-17 | 上海麦浦新材料科技有限公司 | Organosilicon surfactant and application of organosilicon surfactant to preparing polyurethane-molding high resiliency foam |
| CN109694685A (en) * | 2018-12-31 | 2019-04-30 | 苏州思德新材料科技有限公司 | A kind of flame retardant type one-component foam gap filler and preparation method thereof |
| CN111040229A (en) * | 2019-12-27 | 2020-04-21 | 江苏美思德化学股份有限公司 | Open-cell type organic silicon surfactant, preparation method and application thereof, and high-resilience foam |
-
2022
- 2022-10-21 CN CN202211294068.6A patent/CN115505095B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1338275A (en) * | 1970-04-09 | 1973-11-21 | Dow Chemical Co | Process for making a polyurethane foam |
| WO2006089471A1 (en) * | 2005-02-24 | 2006-08-31 | Shanghai Haohai Chemical Co., Ltd. | One-component polyurethane foam having low shrinkage, and its preparation |
| CN101067072A (en) * | 2007-06-05 | 2007-11-07 | 任洪青 | Sealing agent of single component polyurethane foam |
| CN105860084A (en) * | 2016-06-14 | 2016-08-17 | 上海麦浦新材料科技有限公司 | Organosilicon surfactant and application of organosilicon surfactant to preparing polyurethane-molding high resiliency foam |
| CN109694685A (en) * | 2018-12-31 | 2019-04-30 | 苏州思德新材料科技有限公司 | A kind of flame retardant type one-component foam gap filler and preparation method thereof |
| CN111040229A (en) * | 2019-12-27 | 2020-04-21 | 江苏美思德化学股份有限公司 | Open-cell type organic silicon surfactant, preparation method and application thereof, and high-resilience foam |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115505095A (en) | 2022-12-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5362939B2 (en) | Polyurethane foam composition | |
| CN103221446B (en) | Flame resistant flexible polyurethane foam | |
| US6432335B1 (en) | Process for flexible cellular material preparation | |
| EP2875060B1 (en) | Use of polyurea nanoparticles as performance modifiers in polyurethane materials | |
| WO2013179251A1 (en) | A composition in the form of a dispersion comprising a lignin, a method for the manufacturing thereof and use thereof | |
| CN109104864A (en) | Semi-rigid urethane foam and its manufacturing method | |
| CN102858835A (en) | Method for producing rigid foam synthetic resin | |
| JP6659813B2 (en) | B2 rated one-component spray polyurethane foam formulations for fenestration openings | |
| CN115505095B (en) | Open-cell type single-component polyurethane foam joint mixture and preparation method thereof | |
| CN1082063C (en) | Process for preparing open-cellular polyurethane modified polyisocyanurate foam | |
| CN109535688A (en) | A kind of polyurethane foam heat insulation material and preparation method thereof | |
| WO2006089471A1 (en) | One-component polyurethane foam having low shrinkage, and its preparation | |
| BR112012015946A2 (en) | mixture of capped polypropylene oxides with ethylene oxide, process for preparing a polyurethane and process for preparing a resilient and flexible polyurethane foam | |
| CN107428901A (en) | Polyether glycol composition | |
| CN102482489A (en) | Materials comprising a matrix and process for preparing them | |
| US20090004457A1 (en) | Polymer foam composite containing hollow particles and process for preparing the same | |
| EP1944334A1 (en) | Pressurised container containing a foaming composition for elastic foam | |
| US20220372287A1 (en) | Isocyanate-reactive composition | |
| CA3120963C (en) | Formulated waterborne polyurethane dispersion composition for stable ambient-dried foams | |
| CN107428900A (en) | semi-flexible foam formulation | |
| JP4252856B2 (en) | Polyol composition for rigid polyurethane foam and method for producing rigid polyurethane foam | |
| US3880781A (en) | Process for production of cellular or foamed polyurethane from polyethers with and without catalyst |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |