CN110511714B - Polyurethane fireproof adhesive for building - Google Patents
Polyurethane fireproof adhesive for building Download PDFInfo
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- CN110511714B CN110511714B CN201910899454.XA CN201910899454A CN110511714B CN 110511714 B CN110511714 B CN 110511714B CN 201910899454 A CN201910899454 A CN 201910899454A CN 110511714 B CN110511714 B CN 110511714B
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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
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
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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
- C08G18/44—Polycarbonates
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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
- C08G18/70—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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/06—Polyurethanes from polyesters
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- Inorganic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention provides a polyurethane fireproof adhesive for buildings, which consists of a prepolymer component and a polyol component, wherein the prepolymer component consists of 30-70 parts by mass of diisocyanate, 1-5 parts by mass of antimony trioxide, 1-5 parts by mass of asbestos fiber, 5-30 parts by mass of polypropylene carbonate polyol and 0.01-0.2 part by mass of a catalyst, and the polyol component consists of 50-80 parts by mass of polypropylene carbonate polyol, 3-7 parts by mass of a chain extender, 2-4 parts by mass of a cross-linking agent and 5-10 parts by mass of bromine-containing polyol. The polyurethane fireproof adhesive for the building can simultaneously give consideration to flame retardant property, flame retardant durability and mechanical property.
Description
The application is a divisional application of the following patent applications, the application numbers of the original applications: 201711119669.2, filing date: 2017-11-14, invention name: a polyurethane fireproof adhesive for buildings.
Technical Field
The invention relates to the field of polyurethane fireproof glue, in particular to polyurethane fireproof glue for a building, which can simultaneously give consideration to flame retardant property, flame retardant durability and mechanical property.
Background
The polyurethane adhesive has excellent elasticity, low temperature resistance, wear resistance, good adhesion and other properties. Therefore, the paint is widely applied to the fields of buildings, automobiles, home decoration, water proofing, ships and the like.
However, the polyurethane adhesive is flammable, and when the polyurethane adhesive is burned by an external heat source, the problems of large flame, high burning speed, serious dripping, generation of dense smoke and toxic gas and the like exist, and the safety of lives and properties of people is seriously threatened. Along with the improvement of the fireproof performance requirement of people in the building field, the flame retardant performance of the polyurethane fireproof glue is more and more emphasized.
In the prior art, in order to prepare polyurethane fire-proof adhesive and improve the flame retardant performance, metal hydroxide flame retardant, red phosphorus flame retardant, zinc borate, APP and other additive flame retardants are usually added in the preparation process, for example, CN105504354A discloses a high-efficiency halogen-free flame retardant composition for pressure-sensitive adhesive, which comprises: 25-90% of aluminum hydroxide. CN104893641A discloses a preparation method of a high-strength flame-retardant polyurethane sealant, which is composed of A, B parts by weight, wherein the component A is composed of the following components: 60-70 parts of polyurethane prepolymer, 3-5 parts of stearic acid, 22-24 parts of silicon oxide with 200 meshes, 12-14 parts of nano titanium dioxide, 18-20 parts of zirconium dioxide with 400 meshes, 6-8 parts of plasticizer, 12-14 parts of tackifier, 3-5 parts of flame-retardant aluminum hydroxide, 5-7 parts of flame-retardant zinc borate and 6-8 parts of melamine cyanurate. The traditional inorganic hydroxide flame retardant has low flame retardant efficiency, and can achieve the flame retardant purpose only by needing large addition amount. The common additive flame retardant is easy to separate out, and the flame retardant performance is lost along with the prolonging of the use process.
A reactive flame retardant which is a reaction component can participate in the reaction and is beneficial to obtaining the polyurethane fireproof adhesive with good flame retardant durability, for example, CN106221654A relates to a flame retardant bi-component polyurethane adhesive and a preparation method thereof, wherein, a method of co-flame retardant modified polyurethane with soft and hard segments is adopted to respectively prepare an isocyanate group A component and a polyol B component, wherein, the A component consists of diisocyanate, polyol containing flame retardant groups and the reactive flame retardant; the component B comprises a chain extender, a cross-linking agent, polyol containing a flame-retardant group and a reactive flame retardant, and A, B double components are mixed according to a certain proportion and cured to obtain the polyurethane adhesive material with good flame retardance. CN104232006A provides a novel flame-retardant polyurethane adhesive and a preparation method thereof, the polyurethane adhesive is prepared from polytetrahydrofuran diol 1000, toluene diisocyanate, a reactive flame retardant, a chain extender and a cross-linking agent, the reactive flame retardant is dibromo neopentyl glycol, the chain extender is 1, 4-butanediol, and the cross-linking agent is trimethylolpropane. However, the reaction type flame retardant is completely adopted, so that the cost is high, the proportion of polyurethane is influenced, and certain influence is also generated on the performance.
In the traditional polyurethane adhesives, polyether polyol is mostly used as a polyol component, which has the advantage of hydrolysis resistance, but the flame retardant property is inferior to that of polyester polyol, and the problem of hydrolysis resistance is faced when polyester polyol is selected, so that some reports indicate that polypropylene carbonate polyol has excellent hydrolysis resistance, such as CN105482068A, CN1865311A, CN106589300A and the like, but no literature attempts are made to use polypropylene carbonate polyol in preparing polyurethane fire-proof adhesives for buildings.
In conclusion, the polyurethane fireproof glue for the building, which can simultaneously give consideration to the flame retardant property, the flame retardant durability and the mechanical property, has important application value.
Disclosure of Invention
The invention aims to overcome the defects in the existing polyurethane fireproof adhesive technology and provide the polyurethane fireproof adhesive for the building, which can simultaneously give consideration to flame retardant property, flame retardant durability and mechanical property.
The polyurethane fireproof glue for the building is realized by the following technical scheme:
the fire-proof polyurethane glue for building consists of a prepolymer component and a polyol component, wherein the prepolymer component consists of 30-70 parts by mass of diisocyanate, 1-5 parts by mass of antimony trioxide, 1-5 parts by mass of asbestos fiber, 5-30 parts by mass of polypropylene carbonate polyol and 0.01-0.2 part by mass of a catalyst, and the polyol component consists of 50-80 parts by mass of polypropylene carbonate polyol, 3-7 parts by mass of a chain extender, 2-4 parts by mass of a cross-linking agent and 5-10 parts by mass of bromine-containing polyol.
Wherein the polypropylene carbonate polyol in the prepolymer component is polypropylene carbonate glycol having a number average molecular weight of 1000-2000.
The polypropylene carbonate polyol in the polyol component is polypropylene carbonate glycol with the number average molecular weight of 5000-6000.
The diisocyanate can be one or more of toluene diisocyanate, diphenylmethane diisocyanate and polyphenyl polymethylene polyisocyanate, and polyphenyl polymethylene polyisocyanate (such as PM-100, PM-200, etc.) is preferred.
The bromine-containing polyol was a firemaster 520 having a bromine content of 46.0%, a hydroxyl value of 195-217 mgKOH/g.
The chain extender is one of 1, 4-butanediol and 1, 6-hexanediol.
The cross-linking agent is one of glycerol and trimethylolpropane.
The catalyst is one of dibutyltin dilaurate and stannous octoate.
When the prepolymer component and the polyol component are mixed, the mass fraction of the prepolymer component is about 40% to about 50%, and the mass fraction of the polyol component is about 60% to about 50%.
The amount of diisocyanate used in the prepolymer component is preferably 60 to 70 parts by mass, and the amount of polypropylene carbonate polyol used is preferably 5 to 10 parts by mass.
The usage amount of the polypropylene carbonate polyol in the polyol component is preferably 50-60 parts by mass, the usage amount of the chain extender is preferably 3-4 parts by mass, the usage amount of the cross-linking agent is preferably 2-3 parts by mass, and the usage amount of the bromine-containing polyol is preferably 5-8 parts by mass.
The method for preparing the polyurethane fireproof glue comprises the following steps:
(1) preparation of the prepolymer component: drying 5-30 parts by mass of poly (propylene carbonate) polyol at 90-100 ℃ for 1-3 hours in vacuum for dewatering, cooling to 60-80 ℃, adding 30-70 parts by mass of diisocyanate, 1-5 parts by mass of antimony trioxide, 1-5 parts by mass of asbestos fiber and 0.01-0.2 part by mass of catalyst, stirring and mixing, and reacting for 2-6 hours to obtain a prepolymer;
(2) preparation of the polyol component: weighing 50-80 parts by mass of polypropylene carbonate polyol, 3-7 parts by mass of chain extender, 2-4 parts by mass of cross-linking agent and 5-10 parts by mass of bromine-containing polyol, and uniformly stirring and mixing to obtain a polyol component;
(3) preparing fire-proof glue: and (3) mixing the prepolymer component obtained in the step (1) and the polyol component obtained in the step (2) to obtain the fireproof glue, wherein the mass fraction of the prepolymer component is about 40-50%, and the mass fraction of the polyol component is about 60-50%.
Has the advantages that:
1. the additive flame retardant is easy to separate out, the flame retardant performance is lost along with the prolonging of the using process, and the traditional inorganic hydroxide flame retardant has low flame retardant efficiency and can achieve the flame retardant purpose only by needing large addition amount; the reactive flame retardant is used as a reaction component and can participate in the reaction, but the reactive flame retardant is completely adopted, so that the cost is high, the proportion of polyurethane is influenced, and certain influence is generated on the performance. In order to obtain a more balanced effect, the bromine-containing polyol is selected, particularly the firemaster 520 is screened, and compared with the common flame-retardant polyol, the flame-retardant polyol has lower viscosity and is more suitable for mixing; besides the reactive flame retardant, the invention also screens two inorganic additive flame retardants to be matched with the reactive flame retardant. The asbestos fiber can improve the high temperature resistance and the flame retardant property of the fireproof glue, and is beneficial to further improving the flame retardant property by virtue of the special appearance; the flame retardant property of antimony trioxide is not outstanding, but the invention finds that the bromine-containing polyol, the asbestos fiber and the antimony trioxide are matched by repeatedly screening a large amount of flame retardants, so that the flame retardant effect is very good, and the antimony trioxide has a synergistic flame retardant effect, which can be verified from the examples.
2. Antimony trioxide, asbestos fiber, bromine-containing polyol which play a fire retardant role are respectively placed into soft segment components, wherein the antimony trioxide and the asbestos fiber can be wrapped into a prepolymer in the prepolymer preparation process, a part of fire retardant components in the hard segment are guaranteed, the bromine-containing polyol is placed into the polyol components, the polyurethane soft segment is subsequently entered, and finally more fire retardant components exist in the whole polyurethane molecule.
3. The conventional polyurethane adhesive mostly adopts polyether polyol as a polyol component, which has the advantage of hydrolysis resistance, but the flame retardant property is inferior to that of polyester polyol, and the problem of hydrolysis resistance is faced when polyester polyol is selected, so that some reports indicate that polypropylene carbonate polyol has excellent hydrolysis resistance, such as CN105482068A, CN1865311A, CN106589300A and the like, but no literature attempts are made to use the polypropylene carbonate polyol for preparing polyurethane fire-proof adhesive for buildings.
Detailed Description
The present invention will be described in further detail with reference to specific examples. It is to be understood that these embodiments are provided to illustrate the general principles, major features and advantages of the present invention, and the present invention is not limited in scope by the following embodiments. The implementation conditions used in the examples can be further adjusted according to specific requirements, and the implementation conditions not indicated are generally the conditions in routine experiments.
Example 1
A polyurethane fireproof adhesive for buildings is prepared as follows:
(1) preparation of the prepolymer component: vacuum drying 10 parts by weight of polypropylene carbonate dihydric alcohol with the number average molecular weight of 1000 at 100 ℃ for 3 hours for dewatering, cooling to 80 ℃, adding 70 parts by weight of polyphenyl polymethylene polyisocyanate, 5 parts by weight of antimony trioxide, 3 parts by weight of asbestos fiber and 0.01 part by weight of stannous octoate, stirring and mixing, and reacting for 5 hours to obtain a prepolymer;
(2) preparation of the polyol component: weighing 60 parts by mass of polypropylene carbonate dihydric alcohol with the number average molecular weight of 6000, 3 parts by mass of 1, 4-butanediol, 2 parts by mass of trimethylolpropane and 5205 parts by mass of bromine-containing polyol, and uniformly stirring and mixing to obtain a polyol component;
(3) preparing fire-proof glue: and (3) mixing the prepolymer component obtained in the step (1) with the polyol component obtained in the step (2) to obtain the fireproof glue, wherein the mass fraction of the prepolymer component is 40%, and the mass fraction of the polyol component is 60%.
Example 2
A polyurethane fireproof adhesive for buildings is prepared as follows:
(1) preparation of the prepolymer component: 5 parts by mass of polypropylene carbonate dihydric alcohol with the number average molecular weight of 2000 is dried in vacuum at 100 ℃ for 2 hours for dewatering, 60 parts by mass of polyphenyl polymethylene polyisocyanate, 4 parts by mass of antimony trioxide, 4 parts by mass of asbestos fiber and 0.2 part by mass of dibutyltin dilaurate are added after the temperature is reduced to 70 ℃, stirred and mixed, and a prepolymer is obtained after the reaction is carried out for 5 hours;
(2) preparation of the polyol component: weighing 50 parts by mass of polypropylene carbonate dihydric alcohol with the number average molecular weight of 6000, 3 parts by mass of 1, 6-hexanediol, 2 parts by mass of glycerol and 52010 parts by mass of bromine-containing polyol, and uniformly stirring and mixing to obtain a polyol component;
(3) preparing fire-proof glue: and (3) mixing the prepolymer component obtained in the step (1) with the polyol component obtained in the step (2) to obtain the fireproof glue, wherein the mass fraction of the prepolymer component is 50%, and the mass fraction of the polyol component is 50%.
Example 3
A polyurethane fireproof adhesive for buildings is prepared as follows:
(1) preparation of the prepolymer component: vacuum drying 10 parts by weight of polypropylene carbonate dihydric alcohol with the number average molecular weight of 1500 at 95 ℃ for 3 hours for dewatering, cooling to 80 ℃, adding 70 parts by weight of polyphenyl polymethylene polyisocyanate, 5 parts by weight of antimony trioxide, 4 parts by weight of asbestos fiber and 0.1 part by weight of stannous octoate, stirring and mixing, and reacting for 6 hours to obtain a prepolymer;
(2) preparation of the polyol component: weighing 60 parts by mass of polypropylene carbonate dihydric alcohol with the number average molecular weight of 6000, 3 parts by mass of 1, 4-butanediol, 3 parts by mass of trimethylolpropane and 5207 parts by mass of bromine-containing polyol, and uniformly stirring and mixing to obtain a polyol component;
(3) preparing fire-proof glue: and (3) mixing the prepolymer component obtained in the step (1) with the polyol component obtained in the step (2) to obtain the fireproof glue, wherein the mass fraction of the prepolymer component is 40%, and the mass fraction of the polyol component is 60%.
Comparative example 1
A polyurethane fireproof adhesive for buildings is prepared as follows:
(1) preparation of the prepolymer component: vacuum drying 10 parts by weight of polypropylene carbonate dihydric alcohol with the number average molecular weight of 1000 at 100 ℃ for 3 hours to remove water, cooling to 80 ℃, adding 70 parts by weight of polyphenyl polymethylene polyisocyanate, 8 parts by weight of antimony trioxide and 0.01 part by weight of stannous octoate, stirring and mixing, and reacting for 5 hours to obtain a prepolymer;
(2) preparation of the polyol component: weighing 60 parts by mass of polypropylene carbonate dihydric alcohol with the number average molecular weight of 6000, 3 parts by mass of 1, 4-butanediol, 2 parts by mass of trimethylolpropane and 5205 parts by mass of bromine-containing polyol, and uniformly stirring and mixing to obtain a polyol component;
(3) preparing fire-proof glue: and (3) mixing the prepolymer component obtained in the step (1) with the polyol component obtained in the step (2) to obtain the fireproof glue, wherein the mass fraction of the prepolymer component is 40%, and the mass fraction of the polyol component is 60%.
Comparative example 2
A polyurethane fireproof adhesive for buildings is prepared as follows:
(1) preparation of the prepolymer component: vacuum drying 10 parts by weight of polypropylene carbonate dihydric alcohol with the number average molecular weight of 1000 at 100 ℃ for 3 hours for dewatering, cooling to 80 ℃, adding 70 parts by weight of polyphenyl polymethylene polyisocyanate, 8 parts by weight of asbestos fiber and 0.01 part by weight of stannous octoate, stirring and mixing, and reacting for 5 hours to obtain a prepolymer;
(2) preparation of the polyol component: weighing 60 parts by mass of polypropylene carbonate dihydric alcohol with the number average molecular weight of 6000, 3 parts by mass of 1, 4-butanediol, 2 parts by mass of trimethylolpropane and 5205 parts by mass of bromine-containing polyol, and uniformly stirring and mixing to obtain a polyol component;
(3) preparing fire-proof glue: and (3) mixing the prepolymer component obtained in the step (1) with the polyol component obtained in the step (2) to obtain the fireproof glue, wherein the mass fraction of the prepolymer component is 40%, and the mass fraction of the polyol component is 60%.
Comparative example 3
A polyurethane fireproof adhesive for buildings is prepared as follows:
(1) preparation of the prepolymer component: vacuum drying 10 parts by weight of polypropylene carbonate dihydric alcohol with the number average molecular weight of 1000 at 100 ℃ for 3 hours for dewatering, cooling to 80 ℃, adding 70 parts by weight of polyphenyl polymethylene polyisocyanate, 5 parts by weight of zinc borate, 3 parts by weight of asbestos fiber and 0.01 part by weight of stannous octoate, stirring and mixing, and reacting for 5 hours to obtain a prepolymer;
(2) preparation of the polyol component: weighing 60 parts by mass of polypropylene carbonate dihydric alcohol with the number average molecular weight of 6000, 3 parts by mass of 1, 4-butanediol, 2 parts by mass of trimethylolpropane and 5205 parts by mass of bromine-containing polyol, and uniformly stirring and mixing to obtain a polyol component;
(3) preparing fire-proof glue: and (3) mixing the prepolymer component obtained in the step (1) with the polyol component obtained in the step (2) to obtain the fireproof glue, wherein the mass fraction of the prepolymer component is 40%, and the mass fraction of the polyol component is 60%.
Comparative example 4
A polyurethane fireproof adhesive for buildings is prepared as follows:
(1) preparation of the prepolymer component: vacuum drying 10 parts by weight of polypropylene carbonate dihydric alcohol with the number average molecular weight of 1000 at 100 ℃ for 3 hours for dewatering, cooling to 80 ℃, adding 70 parts by weight of polyphenyl polymethylene polyisocyanate, 5 parts by weight of antimony trioxide, 3 parts by weight of asbestos fiber and 0.01 part by weight of stannous octoate, stirring and mixing, and reacting for 5 hours to obtain a prepolymer;
(2) preparation of the polyol component: weighing 60 parts by mass of polypropylene carbonate dihydric alcohol with the number average molecular weight of 6000, 3 parts by mass of 1, 4-butanediol, 2 parts by mass of trimethylolpropane and 5 parts by mass of dimethyl methylphosphonate, and uniformly stirring and mixing to obtain a polyol component;
(3) preparing fire-proof glue: and (3) mixing the prepolymer component obtained in the step (1) with the polyol component obtained in the step (2) to obtain the fireproof glue, wherein the mass fraction of the prepolymer component is 40%, and the mass fraction of the polyol component is 60%.
Comparative example 5
A polyurethane fireproof adhesive for buildings is prepared as follows:
(1) preparation of the prepolymer component: 5 parts by mass of polypropylene carbonate dihydric alcohol with the number average molecular weight of 2000 is dried in vacuum at 100 ℃ for 2 hours to remove water, 60 parts by mass of polyphenyl polymethylene polyisocyanate and 0.2 part by mass of dibutyltin dilaurate are added after the temperature is reduced to 70 ℃, stirred and mixed, and a prepolymer is obtained after the reaction is carried out for 5 hours;
(2) preparation of the polyol component: weighing 50 parts by mass of polypropylene carbonate dihydric alcohol with the number average molecular weight of 6000, 3 parts by mass of 1, 6-hexanediol, 2 parts by mass of glycerol, 4 parts by mass of bromine-containing polyol firemaster 52010, 4 parts by mass of antimony trioxide and 4 parts by mass of asbestos fiber, and uniformly stirring and mixing to obtain a polyol component;
(3) preparing fire-proof glue: and (3) mixing the prepolymer component obtained in the step (1) with the polyol component obtained in the step (2) to obtain the fireproof glue, wherein the mass fraction of the prepolymer component is 50%, and the mass fraction of the polyol component is 50%.
Comparative example 6
A polyurethane fireproof adhesive for buildings is prepared as follows:
(1) preparation of the prepolymer component: vacuum drying 10 parts by mass of polypropylene carbonate dihydric alcohol with the number average molecular weight of 7000 at 95 ℃ for 3 hours to remove water, cooling to 80 ℃, adding 70 parts by mass of polyphenyl polymethylene polyisocyanate, 5 parts by mass of antimony trioxide, 4 parts by mass of asbestos fiber and 0.1 part by mass of stannous octoate, stirring and mixing, and reacting for 6 hours to obtain a prepolymer;
(2) preparation of the polyol component: weighing 60 parts by mass of polypropylene carbonate dihydric alcohol with the number average molecular weight of 1000, 3 parts by mass of 1, 4-butanediol, 3 parts by mass of trimethylolpropane and 5207 parts by mass of bromine-containing polyol, and uniformly stirring and mixing to obtain a polyol component;
(3) preparing fire-proof glue: and (3) mixing the prepolymer component obtained in the step (1) with the polyol component obtained in the step (2) to obtain the fireproof glue, wherein the mass fraction of the prepolymer component is 40%, and the mass fraction of the polyol component is 60%.
Comparative example 7
A polyurethane fireproof adhesive for buildings is prepared as follows:
(1) preparation of the prepolymer component: 10 parts by mass of polyoxypropylene diol with the number average molecular weight of 1500 is dried in vacuum at 95 ℃ for 3 hours to remove water, after the temperature is reduced to 80 ℃, 70 parts by mass of polyphenyl polymethylene polyisocyanate, 5 parts by mass of antimony trioxide, 4 parts by mass of asbestos fiber and 0.1 part by mass of stannous octoate are added, stirred and mixed, and a prepolymer is obtained after reaction for 6 hours;
(2) preparation of the polyol component: weighing 60 parts by mass of polyoxypropylene diol with the number average molecular weight of 6000, 3 parts by mass of 1, 4-butanediol, 3 parts by mass of trimethylolpropane and 5207 parts by mass of bromine-containing polyol, and uniformly stirring and mixing to obtain a polyol component;
(3) preparing fire-proof glue: and (3) mixing the prepolymer component obtained in the step (1) with the polyol component obtained in the step (2) to obtain the fireproof glue, wherein the mass fraction of the prepolymer component is 40%, and the mass fraction of the polyol component is 60%.
TABLE 1 polyurethane fire-proof adhesive Performance test results
The present invention has been described in detail, and the embodiments are only used for understanding the method and the core idea of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and to implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (7)
1. The utility model provides a polyurethane fire prevention glue for building which characterized in that: the fireproof glue consists of a prepolymer component and a polyol component, wherein the prepolymer component consists of 30-70 parts by mass of isocyanate, 1-5 parts by mass of antimony trioxide, 1-5 parts by mass of asbestos fiber, 5-30 parts by mass of polypropylene carbonate polyol and 0.01-0.2 part by mass of a catalyst, and the polyol component consists of 50-80 parts by mass of polypropylene carbonate polyol, 3-7 parts by mass of a chain extender, 2-4 parts by mass of a cross-linking agent and 5-10 parts by mass of bromine-containing polyol;
the polypropylene carbonate polyol in the prepolymer component is polypropylene carbonate glycol with the number average molecular weight of 1000-2000;
the polypropylene carbonate polyol in the polyol component is polypropylene carbonate glycol with the number average molecular weight of 5000-;
the catalyst is one of dibutyltin dilaurate and stannous octoate;
the bromine-containing polyol is a firemaster 520;
the isocyanate is one or more of toluene diisocyanate, diphenylmethane diisocyanate and polyphenyl polymethylene polyisocyanate.
2. The polyurethane fire-proof adhesive for buildings according to claim 1, wherein: the chain extender is one of 1, 4-butanediol and 1, 6-hexanediol.
3. The polyurethane fire-proof adhesive for buildings according to claim 1, wherein: the cross-linking agent is one of glycerol and trimethylolpropane.
4. The polyurethane fire-proof adhesive for buildings according to claim 1, wherein: when the prepolymer component and the polyol component are mixed, the mass fraction of the prepolymer component is 40-50%, and the mass fraction of the polyol component is 60-50%.
5. The polyurethane fire-proof adhesive for buildings according to claim 1, wherein: the prepolymer component contains 60-70 parts by mass of isocyanate and 5-10 parts by mass of polypropylene carbonate polyol.
6. The polyurethane fire-proof adhesive for buildings according to claim 1, wherein: 4-5 parts of antimony trioxide and 4-5 parts of asbestos fiber in the prepolymer component.
7. The polyurethane fire-proof adhesive for buildings according to claim 1, wherein: in the polyol component, the polypropylene carbonate polyol is 50-60 parts by mass, the chain extender is 3-4 parts by mass, the cross-linking agent is 2-3 parts by mass, and the bromine-containing polyol is 5-8 parts by mass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910899454.XA CN110511714B (en) | 2017-11-14 | 2017-11-14 | Polyurethane fireproof adhesive for building |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711119669.2A CN107722911B (en) | 2017-11-14 | 2017-11-14 | A kind of polyurethane fireproof glue for building |
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| CN111395046A (en) * | 2020-03-25 | 2020-07-10 | 上海知贤装饰设计有限公司 | Environment-friendly fireproof wallpaper, environment-friendly glue and fireproof glue |
| JP2022138503A (en) * | 2021-03-10 | 2022-09-26 | シーカ・ハマタイト株式会社 | Urethane adhesive composition |
| CN113801618A (en) * | 2021-08-06 | 2021-12-17 | 河北铂润工贸科技有限公司 | Smoke poison-proof and high-temperature-resistant fireproof glue for fireproof door and preparation method thereof |
| CN114395360A (en) * | 2022-02-23 | 2022-04-26 | 杭州得力科技股份有限公司 | Flame-retardant bi-component polyurethane adhesive and preparation method thereof |
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| DE10162344A1 (en) * | 2001-12-18 | 2003-07-10 | Henkel Kgaa | Flammable polyurethane adhesives |
| CN1186364C (en) * | 2002-08-30 | 2005-01-26 | 中国科学院广州化学研究所 | Polyurethane foam material and its preparation method |
| US7112631B2 (en) * | 2002-10-24 | 2006-09-26 | National Starch And Chemical Investment Holding Corporation | Moisture cured reactive hot melt adhesive with monofunctional reactants as grafting agents |
| CN103703098B (en) * | 2011-06-17 | 2017-03-01 | 伊利诺斯工具制品有限公司 | Mixed type encapsulant composition |
| CN103059796B (en) * | 2012-12-24 | 2014-10-22 | 东莞市升宝新材料科技有限公司 | Inflaming retarding water-tolerant polyurethane tackiness agent and preparation method thereof |
| CN106244080A (en) * | 2015-11-02 | 2016-12-21 | 上海昊誉化工有限公司 | The two-component polyurethane adhesive of a kind of highly effective flame-retardant sticks agent |
| CN106221654B (en) * | 2016-02-02 | 2019-08-23 | 北京理工大学 | A kind of flame retardant bicomponent adhesive for polyurethane and preparation method thereof |
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| CN107722911A (en) | 2018-02-23 |
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