CN112143213A - Flame-retardant polyurethane foam material catalyst and preparation method thereof - Google Patents
Flame-retardant polyurethane foam material catalyst and preparation method thereof Download PDFInfo
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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
- C08J9/04—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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0014—Use of organic additives
- C08J9/0038—Use of organic additives containing phosphorus
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—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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- 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
- C08J9/0066—Use of inorganic compounding ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- 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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- 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
- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2427/06—Homopolymers or copolymers of vinyl chloride
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2206—Oxides; Hydroxides of metals of calcium, strontium or barium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/21—Urea; Derivatives thereof, e.g. biuret
Abstract
The invention discloses a flame-retardant polyurethane foam material catalyst and a preparation method thereof, belonging to the field of flame-retardant polyurethane foam material catalysts. A flame-retardant polyurethane foam material catalyst comprises the following components in parts by mass: 35-40% of polyether polyol; 10-20% of hydrogen peroxide; 10-20% of calcium hydroxide; 1-5% of polyisocyanate; 6-13% of a flame retardant; 12-22% of a reinforcing agent; 4-8% of a foaming agent; 3-8% of a surfactant; the polyvinyl chloride-based composite material also comprises the components of polyvinyl chloride; the flame retardant is specifically any one or a mixture of more of bromide, halogenated phosphate and inorganic salt; the surfactant is one or more of alkyl glucoside, fatty glyceride, sorbitan fatty acid and polysorbate; the invention effectively enhances the flame retardance of the catalyst, improves the safety, avoids generating smoke and toxic corrosive gas caused by combustion and can avoid causing harm to human bodies.
Description
Technical Field
The invention relates to the technical field of flame-retardant polyurethane foam material catalysts, in particular to a flame-retardant polyurethane foam material catalyst and a preparation method thereof.
Background
The polymer foaming material takes a polymer as a matrix material, a large amount of cell structures are generated in the polymer matrix through a physical or chemical method, and the unique cell structures of the foaming material endow a series of excellent performances such as low density, heat insulation and sound insulation, high specific strength, buffering and the like, so the polymer foaming material has wide application in the fields of packaging industry, agriculture, transportation industry, military industry, aerospace industry, daily necessities and the like.
At present, the commonly used foaming catalyst for polyurethane foam is F-11 (trichlorofluoromethane) or F-113 (trichlorotrifluoroethane), and the on-site spraying is constructed in the environment exposed to the atmosphere, and the CFC chemical substances are polluted greatly to cause public hazard, so the on-site spraying is limited and forbidden, however, the flame retardant effect of the existing flame retardant polyurethane foaming material catalyst is poor, so the safety is poor, and a large amount of smoke and toxic corrosive gas are generated during combustion, so the flame retardant polyurethane foaming material catalyst can cause damage to human bodies.
Disclosure of Invention
The invention aims to solve the problem of poor flame retardant effect in the prior art, and provides a flame retardant polyurethane foam material catalyst and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a flame-retardant polyurethane foam material catalyst comprises the following components in parts by mass: 35-40% of polyether polyol; 10-20% of hydrogen peroxide; 10-20% of calcium hydroxide; 1-5% of polyisocyanate; 6-13% of a flame retardant; 12-22% of a reinforcing agent; 4-8% of a foaming agent; 3-8% of a surfactant.
Preferably, the catalyst further comprises the component polyvinyl chloride.
Preferably, the flame retardant is specifically selected from any one or more of bromide, halogenated phosphate and inorganic salt.
Preferably, the surfactant is one or more of alkyl glucoside, fatty glyceride, sorbitan fatty acid and polysorbate.
A preparation method of a flame-retardant polyurethane foam material catalyst comprises the following operation steps:
the method comprises the following steps: adding polyether polyol and polyisocyanate into the reaction kettle, then adding a part of hydrogen peroxide, and uniformly stirring;
step two: grinding the flame retardant, collecting the flame retardant in a container, adding a small part of hydrogen peroxide, and stirring the mixture into paste to form a mixture A;
step three: adding the mixture into a reaction kettle, and then stirring while heating to fully mix the mixture;
step four: sequentially adding polyvinyl chloride, a reinforcing agent, a foaming agent and a surfactant into the reaction kettle, and fully mixing;
step five: then adding calcium hydroxide into the reaction kettle, uniformly stirring to obtain a mixture B, and then precipitating the mixture B;
step six: washing and filtering the precipitated mixture B;
step seven: and drying the mixture, forming and activating to obtain the prepared catalyst.
Preferably, the grinding operation in step two is performed on a grinding and polishing machine.
Preferably, the temperature of the temperature rise in the third step is 50-90 ℃.
Preferably, the precipitation time in step five is 30-60 min.
Preferably, the drying operation in step seven is performed on a rotary evaporator.
Preferably, the forming operation in step seven is performed on a forming machine.
Compared with the prior art, the invention provides the flame-retardant polyurethane foam material catalyst and the preparation method thereof, and the flame-retardant polyurethane foam material catalyst has the following beneficial effects:
1. the flame-retardant polyurethane foam material catalyst is prepared by firstly adding polyether polyol and polyisocyanate into a reaction kettle, then adding a part of hydrogen peroxide, uniformly stirring, grinding a flame retardant simultaneously so as to enable the flame retardant to conveniently react with other components and enhance the reaction effect, then collecting the mixture in a container for convenient use, adding a small part of hydrogen peroxide, stirring the mixture into paste, enabling the mixture to be convenient to use and enhance the flame retardance to form a mixture A, adding the mixture into the reaction kettle, then heating while stirring to fully mix the mixture, heating to enable the reaction to be quicker, sequentially adding polyvinyl chloride, a reinforcing agent, a foaming agent and a surfactant into the reaction kettle, fully mixing, wherein the polyvinyl chloride has stronger stability, better mechanical property, excellent dielectric property and further enhanced flame retardance, the reinforcing agent can enhance the strength of the catalyst, the flame retardance is improved from the side, the foaming agent can adjust the pore size of foaming, when the temperature is higher, the compression strength and the tensile strength of the device can be enhanced, the surface tension of the prepared catalyst can be reduced by the surfactant, the strength of the catalyst is improved, then calcium hydroxide is added into the reaction kettle, the mixture B is obtained by uniformly stirring, then the mixture B is precipitated, the calcium hydroxide can be used as a precipitating agent by adding, the subsequent precipitation speed is enhanced, the reaction speed and the preparation efficiency are improved, the precipitated mixture B is washed and filtered, then the mixture is dried, formed and activated to obtain the prepared catalyst.
The device has the advantages that the parts which are not involved are the same as or can be realized by adopting the prior art, the flame retardance of the catalyst is effectively enhanced, the strength of the catalyst is improved, the flame-retardant effect is further enhanced, the safety is improved, the generation of smoke and toxic corrosive gas caused by combustion is avoided, and the harm to a human body can be avoided.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
Example 1:
a flame-retardant polyurethane foam material catalyst comprises the following components in parts by mass: 40% of polyether polyol; 15% of hydrogen peroxide; 10% of calcium hydroxide; 2% of polyisocyanate; 6% of a flame retardant; 14% of a reinforcing agent; 4% of a foaming agent; 5% of surfactant, wherein the sum of the components is less than or equal to 1.
The catalyst also comprises the component polyvinyl chloride.
The flame retardant is specifically bromide.
The surfactant is alkyl glucoside.
The method comprises the following operation steps:
the method comprises the following steps: adding polyether polyol and polyisocyanate into the reaction kettle, then adding a part of hydrogen peroxide, and uniformly stirring;
step two: grinding the flame retardant, collecting the flame retardant in a container, adding a small part of hydrogen peroxide, and stirring the mixture into paste to form a mixture A;
step three: adding the mixture into a reaction kettle, and then stirring while heating to fully mix the mixture;
step four: sequentially adding polyvinyl chloride, a reinforcing agent, a foaming agent and a surfactant into the reaction kettle, and fully mixing;
step five: then adding calcium hydroxide into the reaction kettle, uniformly stirring to obtain a mixture B, and then precipitating the mixture B;
step six: washing and filtering the precipitated mixture B;
step seven: and drying the mixture, forming and activating to obtain the prepared catalyst.
And the grinding operation in the step two is carried out on a grinding and polishing machine.
The temperature of the temperature rise in the third step is 80 ℃.
The precipitation time in step five is 60 min.
And the flame retardant ground in the second step is 200 meshes.
The drying operation in the seventh step is carried out on a rotary evaporator; and the forming operation in the seventh step is carried out on a forming machine.
In the invention, firstly polyether polyol and polyisocyanate are added into a reaction kettle, then a part of hydrogen peroxide is added, the mixture is stirred uniformly, and meanwhile, a flame retardant is ground, so that the flame retardant can be conveniently reacted with other components, the reaction effect is enhanced, then the mixture is collected in a container and is convenient to use, a small part of hydrogen peroxide is added, the mixture is stirred into paste, the mixture can be conveniently used, the flame retardance is enhanced, a mixture A is formed, the mixture is added into the reaction kettle, then the mixture is stirred while being heated, so that the mixture is fully mixed, the reaction is quicker while being heated, polyvinyl chloride, a reinforcing agent, a foaming agent and a surfactant are sequentially added into the reaction kettle and are fully mixed, the polyvinyl chloride has stronger stability, better mechanical property and excellent dielectric property, the flame retardance can be further enhanced, and the strength of the reinforcing agent can be enhanced, the flame retardance is improved from the side, the foaming agent can adjust the pore size of foaming, when the temperature is higher, the compression strength and the tensile strength of a device can be enhanced, the surface tension of a prepared catalyst can be reduced by the surfactant, the strength of the catalyst is improved, then calcium hydroxide is added into a reaction kettle and uniformly stirred to obtain a mixture B, then the mixture B is precipitated, the calcium hydroxide can be used as a precipitating agent by adding the calcium hydroxide, the subsequent precipitation speed is enhanced, the reaction speed and the preparation efficiency are improved, the precipitated mixture B is washed and filtered, then the mixture is dried and molded, and the prepared catalyst is obtained after activation.
Example 2:
a flame-retardant polyurethane foam material catalyst comprises the following components in parts by mass: 35% of polyether polyol; 15% of hydrogen peroxide; 10% of calcium hydroxide; 4% of polyisocyanate; 7% of a flame retardant; 12% of a reinforcing agent; 8% of a foaming agent; 8 percent of surfactant, wherein the sum of the parts of the components is less than or equal to 1.
The catalyst also comprises the component polyvinyl chloride.
The flame retardant is specifically halogenated phosphate.
The surfactant is mixture of alkyl glucoside and fatty glyceride.
The method comprises the following operation steps:
the method comprises the following steps: adding polyether polyol and polyisocyanate into the reaction kettle, then adding a part of hydrogen peroxide, and uniformly stirring;
step two: grinding the flame retardant, collecting the flame retardant in a container, adding a small part of hydrogen peroxide, and stirring the mixture into paste to form a mixture A;
step three: adding the mixture into a reaction kettle, and then stirring while heating to fully mix the mixture;
step four: sequentially adding polyvinyl chloride, a reinforcing agent, a foaming agent and a surfactant into the reaction kettle, and fully mixing;
step five: then adding calcium hydroxide into the reaction kettle, uniformly stirring to obtain a mixture B, and then precipitating the mixture B;
step six: washing and filtering the precipitated mixture B;
step seven: and drying the mixture, forming and activating to obtain the prepared catalyst.
And the grinding operation in the step two is carried out on a grinding and polishing machine.
The temperature of the temperature rise in the third step is 50 ℃.
The precipitation time in step five is 30 min.
And the flame retardant after grinding in the second step is 100 meshes.
The drying operation in the seventh step is carried out on a rotary evaporator; and the forming operation in the seventh step is carried out on a forming machine.
In the invention, firstly polyether polyol and polyisocyanate are added into a reaction kettle, then a part of hydrogen peroxide is added, the mixture is stirred uniformly, and meanwhile, a flame retardant is ground, so that the flame retardant can be conveniently reacted with other components, the reaction effect is enhanced, then the mixture is collected in a container and is convenient to use, a small part of hydrogen peroxide is added, the mixture is stirred into paste, the mixture can be conveniently used, the flame retardance is enhanced, a mixture A is formed, the mixture is added into the reaction kettle, then the mixture is stirred while being heated, so that the mixture is fully mixed, the reaction is quicker while being heated, polyvinyl chloride, a reinforcing agent, a foaming agent and a surfactant are sequentially added into the reaction kettle and are fully mixed, the polyvinyl chloride has stronger stability, better mechanical property and excellent dielectric property, the flame retardance can be further enhanced, and the strength of the reinforcing agent can be enhanced, the flame retardance is improved from the side, the foaming agent can adjust the pore size of foaming, when the temperature is higher, the compression strength and the tensile strength of a device can be enhanced, the surface tension of a prepared catalyst can be reduced by the surfactant, the strength of the catalyst is improved, then calcium hydroxide is added into a reaction kettle and uniformly stirred to obtain a mixture B, then the mixture B is precipitated, the calcium hydroxide can be used as a precipitating agent by adding the calcium hydroxide, the subsequent precipitation speed is enhanced, the reaction speed and the preparation efficiency are improved, the precipitated mixture B is washed and filtered, then the mixture is dried and molded, and the prepared catalyst is obtained after activation.
Example 3:
a flame-retardant polyurethane foam material catalyst comprises the following components in parts by mass: 38% of polyether polyol; 10% of hydrogen peroxide; 15% of calcium hydroxide; 2% of polyisocyanate; 8% of a flame retardant; 15% of a reinforcing agent; 5% of foaming agent; 5% of surfactant.
The catalyst also comprises the component polyvinyl chloride.
The flame retardant is a mixture of bromide, halogenated phosphate and inorganic salt.
The surfactant is a mixture of fatty acid sorbitan and polysorbate.
The method comprises the following operation steps:
the method comprises the following steps: adding polyether polyol and polyisocyanate into the reaction kettle, then adding a part of hydrogen peroxide, and uniformly stirring;
step two: grinding the flame retardant, collecting the flame retardant in a container, adding a small part of hydrogen peroxide, and stirring the mixture into paste to form a mixture A;
step three: adding the mixture into a reaction kettle, and then stirring while heating to fully mix the mixture;
step four: sequentially adding polyvinyl chloride, a reinforcing agent, a foaming agent and a surfactant into the reaction kettle, and fully mixing;
step five: then adding calcium hydroxide into the reaction kettle, uniformly stirring to obtain a mixture B, and then precipitating the mixture B;
step six: washing and filtering the precipitated mixture B;
step seven: and drying the mixture, forming and activating to obtain the prepared catalyst.
And the grinding operation in the step two is carried out on a grinding and polishing machine.
The temperature of the temperature rise in the third step is 80 ℃.
The precipitation time in step five was 45 min.
And the flame retardant after grinding in the second step is 100 meshes.
The drying operation in the seventh step is carried out on a rotary evaporator; and the forming operation in the seventh step is carried out on a forming machine.
In the invention, firstly polyether polyol and polyisocyanate are added into a reaction kettle, then a part of hydrogen peroxide is added, the mixture is stirred uniformly, and meanwhile, a flame retardant is ground, so that the flame retardant can be conveniently reacted with other components, the reaction effect is enhanced, then the mixture is collected in a container and is convenient to use, a small part of hydrogen peroxide is added, the mixture is stirred into paste, the mixture can be conveniently used, the flame retardance is enhanced, a mixture A is formed, the mixture is added into the reaction kettle, then the mixture is stirred while being heated, so that the mixture is fully mixed, the reaction is quicker while being heated, polyvinyl chloride, a reinforcing agent, a foaming agent and a surfactant are sequentially added into the reaction kettle and are fully mixed, the polyvinyl chloride has stronger stability, better mechanical property and excellent dielectric property, the flame retardance can be further enhanced, and the strength of the reinforcing agent can be enhanced, the flame retardance is improved from the side, the foaming agent can adjust the pore size of foaming, when the temperature is higher, the compression strength and the tensile strength of a device can be enhanced, the surface tension of a prepared catalyst can be reduced by the surfactant, the strength of the catalyst is improved, then calcium hydroxide is added into a reaction kettle and uniformly stirred to obtain a mixture B, then the mixture B is precipitated, the calcium hydroxide can be used as a precipitating agent by adding the calcium hydroxide, the subsequent precipitation speed is enhanced, the reaction speed and the preparation efficiency are improved, the precipitated mixture B is washed and filtered, then the mixture is dried and molded, and the prepared catalyst is obtained after activation.
The combustion conditions are as follows:
in conclusion, the flame-retardant polyurethane foam material catalyst prepared by the invention has strong flame-retardant effect and safety, can be conveniently used at ease, and can avoid generating smoke and toxic gas during combustion, thereby avoiding causing harm to human bodies.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The flame-retardant polyurethane foam material catalyst is characterized by comprising the following components in parts by mass: 35-40% of polyether polyol; 10-20% of hydrogen peroxide; 10-20% of calcium hydroxide; 1-5% of polyisocyanate; 6-13% of a flame retardant; 12-22% of a reinforcing agent; 4-8% of a foaming agent; 3-8% of a surfactant.
2. The flame retarded polyurethane foam catalyst according to claim 1 wherein said catalyst further comprises the component polyvinyl chloride.
3. The flame-retardant polyurethane foam catalyst according to claim 2, wherein the flame retardant is selected from any one or more of bromide, halogenated phosphate and inorganic salt.
4. The flame retardant polyurethane foam catalyst according to claim 3, wherein the surfactant is selected from the group consisting of alkyl glucoside, fatty glyceride, sorbitan fatty acid, and polysorbate.
5. A method for preparing the flame retardant polyurethane foam catalyst according to claim 1, comprising the following steps:
the method comprises the following steps: adding polyether polyol and polyisocyanate into the reaction kettle, then adding a part of hydrogen peroxide, and uniformly stirring;
step two: grinding the flame retardant, collecting the flame retardant in a container, adding a small part of hydrogen peroxide, and stirring the mixture into paste to form a mixture A;
step three: adding the mixture into a reaction kettle, and then stirring while heating to fully mix the mixture;
step four: sequentially adding polyvinyl chloride, a reinforcing agent, a foaming agent and a surfactant into the reaction kettle, and fully mixing;
step five: then adding calcium hydroxide into the reaction kettle, uniformly stirring to obtain a mixture B, and then precipitating the mixture B;
step six: washing and filtering the precipitated mixture B;
step seven: and drying the mixture, forming and activating to obtain the prepared catalyst.
6. The method for preparing the flame retardant polyurethane foam catalyst according to claim 5, wherein the grinding operation in the second step is performed on a grinding and polishing machine.
7. The method of claim 5, wherein the temperature of the third step is 50-90 ℃.
8. The method of claim 5, wherein the precipitation time in the step five is 30-60 min.
9. The method for preparing the flame-retardant polyurethane foam catalyst as claimed in claim 5, wherein the flame retardant after grinding in the second step is 100-200 mesh.
10. The method of claim 5, wherein the drying operation in the seventh step is performed on a rotary evaporator, and the forming operation in the seventh step is performed on a forming machine.
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Application publication date: 20201229 |