CN113582655A - Expandable flexible fireproof material and preparation method thereof - Google Patents
Expandable flexible fireproof material and preparation method thereof Download PDFInfo
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- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
- C04B2111/285—Intumescent materials
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/50—Flexible or elastic materials
- C04B2111/506—Bendable material
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/329—Phosphorus containing acids
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Abstract
The invention relates to the technical field of release agents, in particular to an expandable flexible fireproof material and a preparation method thereof, wherein the expandable flexible fireproof material comprises the following steps: the coating comprises 15-20 parts of expanded perlite, 4-8 parts of SiO2 aerogel powder, 10-15 parts of water-soluble alkali metal silicate, 1-4 parts of stabilizer, 1-2 parts of curing agent, 2-3 parts of polyphosphate ester, 40-60 parts of aluminum silicate, 1-3 parts of glass fiber, 1-2 parts of carborundum, 2-5 parts of talcum powder, 1-2 parts of melamine and 1-3 parts of silane coupling agent; the invention takes aluminum silicate as a main raw material, adds glass fiber, silane coupling agent and carborundum, improves the mechanical strength of the fireproof material, adopts the composition of expanded perlite and SiO2 aerogel powder, ensures that the fireproof material has good strength and toughness, increases inorganic acid and stabilizer, effectively improves the cohesiveness and toughness of the material, coats a coating on the outer layer of the fireproof material, can prevent molten drop during combustion, has good flame-retardant and smoke-suppression functions, and has good fireproof and heat-insulation effects.
Description
Technical Field
The invention relates to the technical field of fireproof materials, in particular to an expandable flexible fireproof material and a preparation method thereof.
Background
Along with the densification of urban population, fire accidents become one of the main disasters of cleaning workshops, the safety of lives and properties of people is seriously harmed, the fire causes are related to management and building structures and also have great relation with the fire resistance of building materials, the fire-proof materials can increase the casualties escaping time and the rescue time when a fire occurs, the structure of a house building can be effectively protected, the maintenance cost is greatly reduced, more personnel injury and property loss are avoided, the existing fire-proof materials are divided into intumescent and non-intumescent, the intumescent coating has the advantages of small thickness, small dosage, simple construction and the like in the actual market performance, especially, the thin fire-proof coating has the largest dosage, such as intumescent halogen-free fire retardants, but the compatibility of the fire-proof materials and polymer substrates is poor, and the thermal stability is not enough, the halogen flame retardant has the advantages of poor water resistance, poor precipitation resistance and poor migration resistance, the flame retardant can be precipitated on the surface after being baked in a long-time oven, the flame retardant is precipitated and dissolved in water after being soaked in hot water for a long time, the flame retardant loses the flame retardant effect, the halogen flame retardant contains halogen, high-concentration toxic and corrosive gases can be generated during combustion, and the halogen flame retardant is not suitable for being added into a flexible fireproof material for use.
The invention improves the fireproof material, so that the fireproof material has good heat insulation property, thereby achieving the purpose of fire prevention, the outer layer of the fireproof material is coated with the expansion type fireproof coating, and the fireproof coating can prevent molten drops from generating during combustion after forming a film, thereby increasing the flexibility of the fireproof material, having good flame-retardant and smoke-suppression functions, not generating toxic and harmful gases, greatly reducing the harm to personnel and electrical equipment, and ensuring the safe operation of a system.
Disclosure of Invention
The invention aims at the defects in the prior art and provides an expandable flexible fireproof material and a preparation method thereof, wherein the expandable flexible fireproof material is prepared by adding glass fiber, silane coupling agent and carborundum into aluminum silicate serving as a main raw material, so that the fireproof material has good fireproof performance and mechanical strength, compounding expanded perlite and SiO2 aerogel powder to ensure that the fireproof material has good strength and toughness, adding inorganic acid and stabilizing agent, effectively improving the cohesiveness and toughness of the material, coating a polyethylene glycol-added coating film on the outer layer of the fireproof material, preventing molten drops from being generated during combustion, ensuring that the fireproof material has good flame-retardant and smoke-suppression functions, generating no toxic and harmful gases, forming a compact and uniform spongy carbon layer after being heated and expanded, and having a firm carbon frame structure and good fireproof and heat-insulation effects.
In order to achieve the purpose, the invention provides the following technical scheme:
an expandable flexible fireproof material comprises 15-20 parts by weight of expanded perlite, 4-8 parts by weight of SiO2 aerogel powder, 10-15 parts by weight of water-soluble alkali metal silicate, 1-4 parts by weight of stabilizer, 1-2 parts by weight of curing agent, 2-3 parts by weight of polyphosphate ester, 40-60 parts by weight of aluminum silicate, 1-3 parts by weight of glass fiber, 1-2 parts by weight of carborundum, 2-5 parts by weight of talcum powder, 1-2 parts by weight of melamine and 1-3 parts by weight of silane coupling agent.
By adopting the technical scheme: the invention adds glass fiber, silane coupling agent and carborundum into the main raw material of aluminum silicate, so that the fireproof material has good fireproof performance and mechanical strength, adopts the composition of expanded perlite and SiO2 aerogel powder, so that the fireproof material has good strength and toughness, adds inorganic acid and stabilizing agent, effectively improves the cohesiveness and toughness of the material, coats a polyethylene glycol coating film on the outer layer of the fireproof material, can prevent molten drops from generating during combustion, has good flame-retardant and smoke-suppression functions, does not generate toxic and harmful gases, can form a compact and uniform spongy carbon layer after being heated and expanded, and has a firmer and firmer structure and good fireproof and heat-insulation effects.
The invention is further configured to: the curing agent is one or more of polyamide, diethylenetriamine, alkaline phenolic resin, urea resin or water-based acrylic resin.
By adopting the technical scheme: the curing agent can enhance the fire-proof performance and mechanical strength of the fire-proof material.
The invention is further configured to: the water-soluble alkali metal silicate is sodium silicate.
By adopting the technical scheme: the water-soluble alkali metal silicate is mixed with water and stirred, and the inorganic acid and the stabilizing agent are added, so that the bonding effect is excellent, the curing speed is high, and the bonding property and the toughness are effectively improved.
The invention is further configured to: the silane coupling agent is KH-550.
By adopting the technical scheme: the silane coupling agent is added into the preparation raw material of the aluminum silicate, so that the fireproof material can be used for a long time and has stable performance.
An expandable flexible fireproof material and a preparation method thereof, comprising the following steps:
s1, preparing a base material;
s2, preparing a film of polyphosphate PP;
s3, preparing the fireproof material.
By adopting the technical scheme: the prepared fireproof material can achieve an ideal effect.
The invention is further configured to: in the step S1, a base material is prepared, including the steps of:
s101, weighing a certain amount of aluminum silicate and glass fiber;
s102, weighing a certain amount of melamine and a certain amount of silane coupling agent, and uniformly mixing the melamine and the silane coupling agent with the components in the S101;
s103, mixing the water-soluble alkali metal silicate with water, continuously mixing and stirring the mixture with the component S102, and adding the lithium hydroxide saturated solution into the mixture under stirring;
s104, preserving heat at 80-100 ℃ for 1.5h, cooling, adding inorganic acid while stirring, and continuing stirring;
and S105, continuously adding the stabilizer and stirring to obtain a base material for later use.
By adopting the technical scheme: the prepared base material is added with a stabilizer and inorganic acid, so that the cohesiveness and toughness of the material are effectively improved, and the base material is a main raw material for manufacturing flexible fireproof materials.
The invention is further configured to: in operation S104, the inorganic acid is phosphoric acid.
By adopting the technical scheme: phosphoric acid is used as inorganic acid and is added into the base material for preparing the fireproof material, and the mixture is fully stirred and mixed, so that the toughness of the fireproof material can be improved.
The invention is further configured to: in operation S105, the stabilizer is ethylenediamine.
By adopting the technical scheme: the stabilizing agent ensures that the fireproof material has excellent bonding effect and high curing speed.
In the step S2, a coating film of polyphosphate PP is prepared, including the steps of:
s201, sequentially adding polyphosphoric acid, pentaerythritol, butanediol and polyethylene glycol in a four-neck flask with a stirrer according to a certain proportion, heating to 130 ℃, reacting for 2-5 hours, vacuumizing for 1 hour, and pumping out a small molecular product to obtain polyphosphate PP;
s202, preparing 50% isobutanol solution from the synthesized polyphosphate PP, wherein the isobutanol solution is used as a component A, and preparing 60% isobutanol solution from methylated amino resin, which is used as a component B;
and S203, uniformly mixing the components in a mass ratio of A to B of 1 to 2 at room temperature, and standing for 20-40 minutes in a shade until no bubbles exist, thereby obtaining the coating containing the polyethylene glycol.
By adopting the technical scheme: the polyethylene glycol chain segment can effectively reduce the crosslinking activity of polyphosphate ester resin and reduce the crosslinking degree of the coating, thereby improving the flexibility of the coating, and the coating containing the polyethylene glycol has good flame-retardant and smoke-suppression functions after being coated on the surface of the fireproof material.
The invention is further configured to: in the step S3, a fireproof material is prepared, including the steps of:
grinding the expanded perlite, the SiO2 aerogel powder and the base material, uniformly stirring and mixing, adding into a double-screw extruder, adding the ground magnesium hydroxide, carborundum and talcum powder into a side feeding port of the double-screw extruder, melting, extruding, drying, granulating, and coating a coating film on the material to obtain the fireproof material.
By adopting the technical scheme, the aluminum silicate is used as a main raw material, and then the glass fiber, the silane coupling agent and the carborundum are added, so that the fireproof material has good fireproof performance and mechanical strength, the composite of the expanded perlite and the SiO2 aerogel powder is adopted, so that the fireproof material has good strength and toughness, the inorganic acid and the stabilizing agent are added, the cohesiveness and toughness of the material are effectively improved, the coating film added with the polyethylene glycol is coated on the outer layer of the fireproof material, molten drops can be prevented from being generated during combustion, the fireproof material has good flame-retardant and smoke-suppression functions, toxic and harmful gases are not generated, a compact and uniform spongy carbon layer can be formed after being heated and expanded, the carbon frame structure is firm, and the fireproof and heat-insulation effects are good.
Advantageous effects
Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:
the invention takes aluminum silicate as a main raw material, adds glass fiber, silane coupling agent and carborundum, so that the fireproof material has good fireproof performance and mechanical strength, adopts the composition of expanded perlite and SiO2 aerogel powder, so that the fireproof material has good strength and toughness, adds inorganic acid and stabilizing agent, effectively improves the cohesiveness and toughness of the material, coats a polyethylene glycol coating film on the outer layer of the fireproof material, can prevent molten drops from generating during combustion, has good flame-retardant and smoke-suppression functions, does not generate toxic and harmful gases, can form a compact and uniform spongy carbon layer after being heated and expanded, and has firmer and firmer carbon frame structure and good fireproof and heat-insulation effects.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be further described with reference to the following examples.
Example 1
An expandable flexible fireproof material comprises 16 parts by weight of expanded perlite, 5 parts by weight of SiO2 aerogel powder, 11 parts by weight of water-soluble alkali metal silicate, 2 parts by weight of stabilizer, 2 parts by weight of curing agent, 2 parts by weight of polyphosphate ester, 45 parts by weight of aluminum silicate, 2 parts by weight of glass fiber, 1 part by weight of carborundum, 2 parts by weight of talcum powder, 2 parts by weight of melamine, 1 part by weight of silane coupling agent, polyamide as curing agent, sodium silicate as water-soluble alkali metal silicate and KH-550 as silane coupling agent.
A preparation method of an expandable flexible fireproof material comprises the following steps:
the preparation method comprises the following steps of:
101) weighing a certain amount of aluminum silicate and glass fiber;
102) weighing a certain amount of melamine and a certain amount of silane coupling agent, and uniformly mixing the melamine and the silane coupling agent with the components in the S101;
103) mixing the water-soluble alkali metal silicate with water, continuously mixing and stirring the mixture with the S102 component, and adding the lithium hydroxide saturated solution into the mixture under stirring;
104) keeping the temperature at 80-100 ℃ for 1.5h, cooling, adding inorganic acid while stirring, and continuing stirring, wherein the inorganic acid is phosphoric acid;
105) and continuously adding a stabilizer, and stirring to obtain a base material for later use, wherein the stabilizer is ethylenediamine.
And step two, preparing a film of polyphosphate PP.
The preparation method of the film of the polyphosphate PP comprises the following steps:
201) sequentially adding polyphosphoric acid, pentaerythritol, butanediol and polyethylene glycol according to a certain proportion into a four-neck flask with a stirrer, heating to 130 ℃, reacting for 2-5 hours, vacuumizing for 1 hour, and pumping out a small molecular product to obtain polyphosphate PP;
202) preparing 50% isobutanol solution as a component A from the synthesized polyphosphate PP, and preparing 60% isobutanol solution as a component B from the methylated amino resin;
203) and uniformly mixing the components in a mass ratio of A to B of 1 to 2 at room temperature, and standing for 20-40 minutes in a shade until no bubbles exist, thereby obtaining the coating containing the polyethylene glycol.
And step three, preparing the fireproof material.
The preparation of the fireproof material comprises the following steps:
grinding the expanded perlite, the SiO2 aerogel powder and the base material, uniformly stirring and mixing, adding into a double-screw extruder, adding the ground magnesium hydroxide, carborundum and talcum powder into a side feeding port of the double-screw extruder, melting, extruding, drying, granulating, and coating a coating film on the material to obtain the fireproof material.
Example 2
The expandable flexible fireproof material and the preparation method thereof provided by the embodiment are substantially the same as those of the embodiment 1, and the main differences are as follows: 20 parts of expanded perlite, 6 parts of SiO2 aerogel powder, 12 parts of water-soluble alkali metal silicate, 3 parts of stabilizer, 1 part of curing agent, 2.5 parts of polyphosphate PP, 56 parts of aluminum silicate, 1.2 parts of glass fiber, 1.3 parts of carborundum, 4 parts of talcum powder, 1.4 parts of melamine and 1.4 parts of silane coupling agent.
Example 3
The expandable flexible fireproof material and the preparation method thereof provided by the embodiment are substantially the same as those of the embodiment 1, and the main differences are as follows: 19 parts of expanded perlite, 7 parts of SiO2 aerogel powder, 14 parts of water-soluble alkali metal silicate, 1.2 parts of stabilizer, 1.6 parts of curing agent, 2.7 parts of polyphosphate PP, 43 parts of aluminum silicate, 2.2 parts of glass fiber, 1.7 parts of carborundum, 3 parts of talcum powder, 1.1 parts of melamine and 2 parts of silane coupling agent.
Comparative example 1
The expandable flexible fireproof material and the preparation method thereof provided by the embodiment are substantially the same as those of the embodiment 1, and the main differences are as follows: no curing agent was added.
Comparative example 2
The expandable flexible fireproof material and the preparation method thereof provided by the embodiment are substantially the same as those of the embodiment 1, and the main differences are as follows: no stabilizer was added.
Comparative example 3
The expandable flexible fireproof material and the preparation method thereof provided by the embodiment are substantially the same as those of the embodiment 1, and the main differences are as follows: polyethylene glycol was not added.
Performance testing
The related performances of the expandable flexible fireproof materials prepared in the examples 1-3 and the comparative examples 1-3 are detected, and the detection method comprises the following steps:
respectively detecting the bonding strength performance of each expandable flexible fireproof material according to the detection standard GB/T16555-2008, respectively detecting the impact strength performance of each expandable flexible fireproof material according to the detection standard GB/T17617-1998, respectively detecting the flame retardant performance of each expandable flexible fireproof material according to the detection standard GB/T19666-2005, and recording the obtained test results in table 1;
TABLE 1 Expandable flexible fireproof material testing table
It can be known by analyzing the relevant data in the table that the expandable flexible fireproof material prepared by the invention has the advantages that the aluminum silicate is used as the main raw material, the glass fiber, the silane coupling agent and the carborundum are added, so that the fireproof material has good fireproof performance and mechanical strength, the expanded perlite and the SiO2 aerogel powder are compounded, so that the fireproof material has good strength and toughness, the inorganic acid and the stabilizing agent are added, the cohesiveness and the toughness of the material are effectively improved, the polyethylene glycol coating film is coated on the outer layer of the fireproof material, molten drops can be prevented from being generated during combustion, the fireproof material has good flame-retardant and smoke-suppression functions, toxic and harmful gases are not generated, a compact and uniform spongy carbon layer can be formed after the fireproof material is heated and expanded, and the carbon frame structure is firmer and has good fireproof and heat-insulation effects.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. An expandable flexible fireproof material is characterized by comprising 15-20 parts by weight of expanded perlite, 4-8 parts by weight of SiO2 aerogel powder, 10-15 parts by weight of water-soluble alkali metal silicate, 1-4 parts by weight of stabilizer, 1-2 parts by weight of curing agent, 2-3 parts by weight of polyphosphate ester, 40-60 parts by weight of aluminum silicate, 1-3 parts by weight of glass fiber, 1-2 parts by weight of carborundum, 2-5 parts by weight of talcum powder, 1-2 parts by weight of melamine and 1-3 parts by weight of silane coupling agent.
2. The expandable flexible fire-resistant material of claim 1, wherein the curing agent is one or more of polyamide, diethylenetriamine, alkaline phenol-formaldehyde resin, urea-formaldehyde resin or water-based acrylic resin.
3. An expandable flexible fire-resistant material according to claim 1, wherein said water-soluble alkali metal silicate is sodium silicate.
4. An expandable flexible fire-resistant material according to claim 1, wherein said silane coupling agent is KH-550.
5. A method for the production of an expandable flexible fire-barrier material, wherein an expandable flexible fire-barrier material according to any one of claims 1 to 4 is used, comprising the steps of:
s1, preparing a base material;
s2, preparing a film of polyphosphate PP;
s3, preparing the fireproof material.
6. The method of claim 5, wherein the step S1 of preparing the base material comprises the steps of:
s101, weighing a certain amount of aluminum silicate and glass fiber;
s102, weighing a certain amount of melamine and a certain amount of silane coupling agent, and uniformly mixing the melamine and the silane coupling agent with the components in the S101;
s103, mixing the water-soluble alkali metal silicate with water, continuously mixing and stirring the mixture with the component S102, and adding the lithium hydroxide saturated solution into the mixture under stirring;
s104, preserving heat at 80-100 ℃ for 1.5h, cooling, adding inorganic acid while stirring, and continuing stirring;
and S105, continuously adding the stabilizer and stirring to obtain a base material for later use.
7. The method of claim 6, wherein the inorganic acid is phosphoric acid in operation S104.
8. The method of claim 6, wherein the stabilizer is ethylenediamine in operation S105.
9. The method for preparing an expandable flexible fireproof material according to claim 5, wherein in step S2, the preparation of polyphosphate PP comprises the following steps:
s201, sequentially adding polyphosphoric acid, pentaerythritol, butanediol and polyethylene glycol in a four-neck flask with a stirrer according to a certain proportion, heating to 130 ℃, reacting for 2-5 hours, vacuumizing for 1 hour, and pumping out a small molecular product to obtain polyphosphate PP;
s202, preparing 50% isobutanol solution from the synthesized polyphosphate PP, wherein the isobutanol solution is used as a component A, and preparing 60% isobutanol solution from methylated amino resin, which is used as a component B;
and S203, uniformly mixing the components in a mass ratio of A to B of 1 to 2 at room temperature, and standing for 20-40 minutes in a shade until no bubbles exist, thereby obtaining the coating containing the polyethylene glycol.
10. The method of claim 5, wherein in step S3, the method of preparing the fire-retardant material comprises the following steps:
grinding the expanded perlite, the SiO2 aerogel powder and the base material, uniformly stirring and mixing, adding into a double-screw extruder, adding the ground magnesium hydroxide, carborundum and talcum powder into a side feeding port of the double-screw extruder, melting, extruding, drying, granulating, and coating a coating film on the material to obtain the fireproof material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110811214.7A CN113582655A (en) | 2021-07-19 | 2021-07-19 | Expandable flexible fireproof material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113789073A (en) * | 2020-12-25 | 2021-12-14 | 优威康涂层科技(青岛)有限公司 | Inorganic composite bi-component antibacterial mildew-proof easy-cleaning coating |
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| CN104046201A (en) * | 2014-03-28 | 2014-09-17 | 上海大学 | Flexible expandable transparent fireproof paint and preparation method thereof |
| CN106517970A (en) * | 2016-11-18 | 2017-03-22 | 南京悠谷知识产权服务有限公司 | Fireproof material and preparation method thereof |
| CN109095879A (en) * | 2018-08-27 | 2018-12-28 | 芜湖市元奎新材料科技有限公司 | A kind of inorganic compounding fire proofing material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104046201A (en) * | 2014-03-28 | 2014-09-17 | 上海大学 | Flexible expandable transparent fireproof paint and preparation method thereof |
| CN106517970A (en) * | 2016-11-18 | 2017-03-22 | 南京悠谷知识产权服务有限公司 | Fireproof material and preparation method thereof |
| CN109095879A (en) * | 2018-08-27 | 2018-12-28 | 芜湖市元奎新材料科技有限公司 | A kind of inorganic compounding fire proofing material and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113789073A (en) * | 2020-12-25 | 2021-12-14 | 优威康涂层科技(青岛)有限公司 | Inorganic composite bi-component antibacterial mildew-proof easy-cleaning coating |
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