CN115716739B - Floating bead fireproof gel - Google Patents
Floating bead fireproof gel Download PDFInfo
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- CN115716739B CN115716739B CN202211367673.1A CN202211367673A CN115716739B CN 115716739 B CN115716739 B CN 115716739B CN 202211367673 A CN202211367673 A CN 202211367673A CN 115716739 B CN115716739 B CN 115716739B
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- refractory
- floating bead
- binder
- mesoporous silica
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention relates to the technical field of floating bead refractory gel, in particular to floating bead refractory gel which comprises the following components in parts by weight: 35-70 parts of floating beads, 50-80 parts of aluminate cement, 20-30 parts of calcium oxide and the following components: 0.5-1 part of chopped glass fiber and 0.5-1 part of a first component; the first component consists of a mesoporous silica nano-carrier loaded penetrating agent and a binder, and the loading amount of the penetrating agent and the binder in the mesoporous silica nano-carrier is 20-30% based on the weight loading amount; the binder includes an organic binder and an inorganic binder. When the floating bead fireproof gel is used for splicing the floating bead fireproof heat insulation plates, the affinity and the permeability of the floating bead fireproof heat insulation plates with the binder can be enhanced, the bonded and spliced floating bead fireproof heat insulation plates are connected into a whole through the binder, the service time is long, and the stripping or cracking phenomenon can not occur.
Description
Technical Field
The invention relates to the technical field of floating bead refractory gel, in particular to floating bead refractory gel.
Background
The floating bead is a flyash hollow ball which can float on the water surface, is gray, thin and hollow in wall, light in weight, closed and smooth in surface, small in heat conductivity, and is an excellent heat-insulating refractory material, and widely used in the production of light castable and petroleum drilling. The chemical components of the floating beads mainly comprise silicon dioxide and aluminum oxide, and the floating beads have the characteristics of fine particles, hollowness, light weight, high strength, wear resistance, high temperature resistance, heat insulation, flame retardance and the like, are produced in fly ash, and the fly ash is soaked to form a gray tiny hollow particle floating on the water surface.
However, when the existing floating bead fireproof insulation board is spliced, sealing and bonding treatment are needed, due to the self characteristics of the floating bead fireproof insulation board, the existing organic bonding agent and inorganic bonding agent have insufficient affinity with the floating bead fireproof insulation board, so that the permeability and bonding force in the bonding and sealing processes are insufficient, the floating bead fireproof insulation board is easy to peel after bonding, and the floating bead fireproof insulation board is easy to crack after sealing, so that the system function is damaged.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the floating bead fireproof gel, wherein the floating bead fireproof gel can enhance the affinity and permeability with the adhesive when the floating bead fireproof heat insulation board is spliced in application, and the spliced floating bead fireproof heat insulation board is connected into a whole through the adhesive after being bonded, so that the floating bead fireproof heat insulation board has long service time and can not be stripped or cracked.
In order to achieve the above object, the first aspect of the present invention provides a floating bead refractory gel, comprising the following components in parts by weight: 35-70 parts of floating beads, 50-80 parts of aluminate cement, 20-30 parts of calcium oxide and the following components: 0.5-1 part of chopped glass fiber and 0.5-1 part of a first component; the first component consists of a mesoporous silica nano-carrier loaded penetrating agent and a binder, and the loading amount of the penetrating agent and the binder in the mesoporous silica nano-carrier is 20-30% based on the weight loading amount; the adhesive comprises an organic adhesive and an inorganic adhesive, and the mass ratio of the penetrating agent to the organic adhesive to the inorganic adhesive is 1:0.1-0.35:1.2-1.6.
Preferably, the aperture of the mesoporous silica nano-carrier is 300nm-600nm.
Preferably, the mass ratio of the penetrating agent to the organic binder to the inorganic binder is 1:0.1-0.2:1.2-1.4.
More preferably, the first component is obtained by the following preparation method:
mixing the penetrating agent and the binding agent with a mixed solvent consisting of ethanol and water, and then adding the mixture into the mesoporous silica nano-carrier under intense stirring in an ultrasonic environment, wherein the adding speed is 0.2-1mL/s, the stirring speed is 3000-10000 rpm, and the ultrasonic frequency is 20-30KHz.
More preferably, the volume ratio of the ethanol to the water in the mixed solvent is 1:3-10.
More preferably, the process of mixing the penetrating agent and the binder with a mixed solvent consisting of ethanol and water includes:
firstly, mixing part of penetrating agent and organic binder for 15-25min to obtain a first mixture; mixing the residual penetrating agent and the inorganic binder for 15-25min to obtain a second mixture; the first mixture and the second mixture are then mixed together with the mixed solvent for 15-25min.
Preferably, the floating bead refractory gel of the present invention further comprises: and 0.5-1 part of a second component, wherein the second component is formed by loading a refractory agent on a mesoporous silica nano-carrier, and the loading amount of the refractory agent in the mesoporous silica nano-carrier is 5-10% by weight of the refractory agent.
More preferably, the refractory consists of calcium titanate and calcium aluminate in a mass ratio of 0.3-0.6:1.
More preferably, the pore diameter of the mesoporous silica nano-carrier is 300nm-600nm.
Preferably, the second component is obtained by the following preparation method:
adding the refractory agent and a mixed solvent consisting of ethanol and water into the mesoporous silica nano-carrier under intense stirring in an ultrasonic environment, wherein the adding speed is 2-4mL/s, the stirring speed is 3000-10000 rpm, and the ultrasonic frequency is 35-50KHz.
Compared with the prior art, the floating bead refractory gel provided by the invention has the advantages that the penetrating agent and the binder with specific proper proportions are loaded in the mesoporous silica nano carrier, and other technical characteristics are matched, so that the floating bead refractory gel has a slow release performance, in the slow release process, the released penetrating agent and binder can have natural affinity with the binder when the floating bead refractory heat insulation board is spliced and applied, the penetrating and fusion together can be better, and two adjacent floating bead refractory heat insulation boards can be fused into a one-piece structure through the binder; and the released penetrant and binder gradually enhance the adhesion over time. Long service time, and no peeling or cracking phenomenon. In addition, the invention can enhance the binding force and permeability and improve the fire-resistant and heat-insulating performance when being matched with a proper amount of chopped glass fibers.
Detailed Description
The endpoints and any values of the ranges disclosed herein are not limited to the precise range or value, and are understood to encompass values approaching those ranges or values. For numerical ranges, one or more new numerical ranges may be found between the endpoints of each range, between the endpoint of each range and the individual point value, and between the individual point value, in combination with each other, and are to be considered as specifically disclosed herein.
The invention provides a floating bead refractory gel, which comprises the following components in parts by weight: 35-70 parts of floating beads, 50-80 parts of aluminate cement, 20-30 parts of calcium oxide and the following components: 0.5-1 part of chopped glass fiber and 0.5-1 part of a first component; the first component consists of a mesoporous silica nano-carrier loaded penetrating agent and a binder, and the loading amount of the penetrating agent and the binder in the mesoporous silica nano-carrier is 20-30% based on the weight loading amount; the adhesive comprises an organic adhesive and an inorganic adhesive, and the mass ratio of the penetrating agent to the organic adhesive to the inorganic adhesive is 1:0.1-0.35:1.2-1.6.
In the invention, the penetrating agent, the organic binder and the inorganic binder in proper proportion are matched with proper loading, so that the mesoporous silica nano-carrier has excellent slow release performance.
Preferably, the aperture of the mesoporous silica nano-carrier is 300nm-600nm.
Preferably, the mass ratio of the penetrating agent to the organic binder to the inorganic binder is 1:0.1-0.2:1.2-1.4. Under the preferred scheme, the slow release performance of the mesoporous silica nano-carrier is more beneficial to improvement.
More preferably, the first component is obtained by the following preparation method:
mixing the penetrating agent and the binding agent with a mixed solvent consisting of ethanol and water, and then adding the mixture into the mesoporous silica nano-carrier under intense stirring in an ultrasonic environment, wherein the adding speed is 0.2-1mL/s, the stirring speed is 3000-10000 rpm, and the ultrasonic frequency is 20-30KHz. Under the preferred scheme, the capillary force of the internal micropore structure of the mesoporous silica nano-carrier can be fully utilized to firmly and rapidly adsorb the penetrating agent and the adhesive in the pore canal of the micropore structure; so that the mesoporous silica nano-carrier stores more penetrating agent and binder.
The volume ratio of ethanol to water in the mixed solvent can be selected by a person skilled in the art according to actual demands, so long as the mixing of the penetrating agent and the binder can be facilitated, and the mesoporous silica nano-carrier can be facilitated to absorb more penetrating agent and binder. More preferably, the volume ratio of the ethanol to the water in the mixed solvent is 1:3-10.
More preferably, the process of mixing the penetrating agent and the binder with a mixed solvent consisting of ethanol and water includes:
firstly, mixing part of penetrating agent and organic binder for 15-25min to obtain a first mixture; mixing the residual penetrating agent and the inorganic binder for 15-25min to obtain a second mixture; the first mixture and the second mixture are then mixed together with the mixed solvent for 15-25min. Under the preferred scheme, the penetrating agent and the adhesive are better fused, so that enough penetrating agent and adhesive can be released simultaneously when released, and the penetration and affinity of the adhesive for bonding and splicing are better enhanced.
Preferably, the floating bead refractory gel of the present invention further comprises: and 0.5-1 part of a second component, wherein the second component is formed by loading a refractory agent on a mesoporous silica nano-carrier, and the loading amount of the refractory agent in the mesoporous silica nano-carrier is 5-10% by weight of the refractory agent. Under the preferred scheme, the refractory performance of the floating bead refractory gel is improved, the refractory agent can be released simultaneously during bonding and splicing, the refractory performance of the splicing part is enhanced, the fusion and integration of the floating bead refractory heat insulation plate and the splicing part are improved, and the stripping or cracking phenomenon is avoided. The refractoriness of the floating bead refractory gel can reach more than 1760 ℃, and can meet market demands.
More preferably, the refractory consists of calcium titanate and calcium aluminate in a mass ratio of 0.3-0.6:1.
More preferably, the pore diameter of the mesoporous silica nano-carrier is 300nm-600nm.
Preferably, the second component is obtained by the following preparation method:
adding the refractory agent and a mixed solvent consisting of ethanol and water into the mesoporous silica nano-carrier under intense stirring in an ultrasonic environment, wherein the adding speed is 2-4mL/s, the stirring speed is 3000-10000 rpm, and the ultrasonic frequency is 35-50KHz. Under the preferred scheme, the capillary force of the internal micropore structure of the mesoporous silica nano carrier can be fully utilized to firmly and rapidly adsorb the refractory agent in the pore canal of the micropore structure; so that the mesoporous silica nano-carrier stores more refractory agent.
More preferably, the volume ratio of the ethanol to the water in the mixed solvent is 1:3-7.
In the present invention, the penetrating agent, the organic binder, the inorganic binder and the refractory agent are all conventional in the art, and can be used in the present invention, and are not described herein.
The present invention will be described in detail by examples. Among them, the penetrant (T (dioctyl sodium sulfosuccinate)), the organic binder (carboxymethyl cellulose), the inorganic binder (aluminum phosphate) and the refractory agent in examples and comparative examples are all commercially available.
Example 1
The floating bead fireproof gel comprises the following components in parts by weight: 40 parts of floating beads, 50 parts of aluminate cement, 25 parts of calcium oxide, 0.6 part of chopped glass fiber, 0.5 part of a first component and 0.6 part of a second component; the first component consists of a mesoporous silica nano-carrier loaded penetrating agent and a binder, and the loading amount of the penetrating agent and the binder in the mesoporous silica nano-carrier is 25% based on the weight loading amount; the binder comprises an organic binder and an inorganic binder, and the mass ratio of the penetrating agent to the organic binder to the inorganic binder is 1:0.1:1.4. The aperture of the mesoporous silica nano-carrier is 300nm-600nm.
The first component is obtained by the following preparation method: firstly, mixing 30wt% of penetrating agent and organic binder for 20min to obtain a first mixture; mixing 70wt% of penetrating agent and inorganic binder for 15min to obtain a second mixture; the first mixture and the second mixture were then mixed together with the mixed solvent for 20min. Then adding the mixture into the mesoporous silica nano-carrier under intense stirring in an ultrasonic environment, wherein the adding speed is 0.5mL/s, the stirring speed is 6000rpm, and the ultrasonic frequency is 25KHz. The volume ratio of ethanol to water in the mixed solvent is 1:6.
The second component is formed by loading a refractory agent on the mesoporous silica nano-carrier, and the loading amount of the refractory agent in the mesoporous silica nano-carrier is 6% based on the weight loading amount. The aperture of the mesoporous silica nano-carrier is 300nm-600nm. The second component is obtained by the following preparation method: adding a refractory agent into a mixed solvent consisting of ethanol and water in a volume ratio of 1:3, and then adding the mixed solvent into a mesoporous silica nano carrier under intense stirring in an ultrasonic environment, wherein the adding speed is 3mL/s, the stirring speed is 3000rpm, and the ultrasonic frequency is 40KHz. The refractory consists of calcium titanate and calcium aluminate in the mass ratio of 0.3:1. The flame-retardant gel of the present example was subjected to a combustion performance test, and the results are shown in Table 1. As can be seen from Table 1, the combustion performance meets the index requirements of the A (A1) grade of the flat plate-shaped building materials and products in GB8624-2012 combustion performance grades of building materials and products.
After the floating bead refractory insulation board prepared by the floating bead refractory gel of the present example was subjected to binder splicing (which is a combination of an organic binder and an inorganic binder in a mass ratio of 0.6:1.4), the whole was subjected to a fire resistance test, and the results are shown in table 2.
And a control group was set: the floating bead fireproof gel comprises the following components in parts by weight: 40 parts of floating beads, 50 parts of aluminate cement, 25 parts of calcium oxide, 0.6 part of chopped glass fibers and a refractory agent consisting of calcium titanate and calcium aluminate in a mass ratio of 0.3:1.
The floating bead refractory insulation boards prepared by the floating bead refractory gels of the present example and the control group were respectively subjected to adhesive splicing (which is a combination of an organic adhesive and an inorganic adhesive in a mass ratio of 0.1:1.4), and then the time of initial cracking was observed at 60 ℃, and the cracking resistance was evaluated by the ratio W of the time corresponding to the present example to the time corresponding to the control group, and the results are shown in table 2. The larger the ratio W, the better the cracking resistance.
Example 2
The procedure of example 1 was followed, except that the mass ratio of the penetrating agent, the organic binder and the inorganic binder was 1:0.35:1.6. And corresponding tests were performed, the results of which are shown in table 2. The fire-resistant gel with floating beads in the embodiment is subjected to a fire performance test, and the fire performance meets the index requirements of the A (A1) level of flat plate-shaped building materials and products in GB8624-2012 classification of the fire performance of building materials and products.
Example 3
The procedure of example 1 was followed, except that the first component was prepared by the following procedure: and directly mixing the penetrating agent and the binding agent with a mixed solvent consisting of ethanol and water and the mesoporous silica nano-carrier for 30min. And corresponding tests were performed, the results of which are shown in table 2. The fire-resistant gel with floating beads in the embodiment is subjected to a fire performance test, and the fire performance meets the index requirements of the A (A1) level of flat plate-shaped building materials and products in GB8624-2012 classification of the fire performance of building materials and products.
Example 4
The procedure of example 1 was followed except that the second component consisted of the refractory agents calcium titanate and calcium aluminate only, excluding the mesoporous silica nanocarriers. And corresponding tests were performed, the results of which are shown in table 2. The fire-resistant gel with floating beads in the embodiment is subjected to a fire performance test, and the fire performance meets the index requirements of the A (A1) level of flat plate-shaped building materials and products in GB8624-2012 classification of the fire performance of building materials and products.
Example 5
The procedure of example 1 was followed except that the refractory did not contain calcium titanate but only calcium aluminate. And corresponding tests were performed, the results of which are shown in table 2. The fire-resistant gel with floating beads in the embodiment is subjected to a fire performance test, and the fire performance meets the index requirements of the A (A1) level of flat plate-shaped building materials and products in GB8624-2012 classification of the fire performance of building materials and products.
Comparative example 1
The procedure of example 1 was followed, except that the mesoporous silica nanocarriers were not contained in both the first and second components, but the corresponding penetrants, binders and refractories were directly mixed with the other components. And corresponding tests were performed, the results of which are shown in table 2.
TABLE 1
TABLE 2
As can be seen from the results of tables 1-2, the use of the examples of the present invention has significantly better results.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, a number of simple variants of the technical solution of the invention are possible, including combinations of the individual technical features in any other suitable way, which simple variants and combinations should likewise be regarded as being disclosed by the invention, all falling within the scope of protection of the invention.
Claims (10)
1. The floating bead fireproof gel comprises the following components in parts by weight: 35-70 parts of floating beads, 50-80 parts of aluminate cement and 20-30 parts of calcium oxide, and is characterized by further comprising: 0.5-1 part of chopped glass fiber and 0.5-1 part of a first component; the first component consists of a mesoporous silica nano-carrier loaded penetrating agent and a binder, and the total loading amount of the penetrating agent and the binder in the mesoporous silica nano-carrier is 20-30% based on the weight loading amount; the adhesive comprises an organic adhesive and an inorganic adhesive, and the mass ratio of the penetrating agent to the organic adhesive to the inorganic adhesive is 1:0.1-0.35:1.2-1.6.
2. The floating bead refractory gel according to claim 1, wherein the mesoporous silica nanocarrier has a pore size of 300nm to 600nm.
3. The floating bead refractory gel according to claim 1, wherein the mass ratio of the penetrating agent, the organic binder and the inorganic binder is 1:0.1-0.2:1.2-1.4.
4. The floating bead refractory gel according to claim 1, wherein the first component is obtained by the following preparation method:
mixing the penetrating agent and the binding agent with a mixed solvent consisting of ethanol and water, and then adding the mixture into the mesoporous silica nano-carrier under intense stirring in an ultrasonic environment, wherein the adding speed is 0.2-1mL/s, the stirring speed is 3000-10000 rpm, and the ultrasonic frequency is 20-30KHz.
5. The floating bead refractory gel according to claim 4, wherein the volume ratio of ethanol to water in the mixed solvent is 1:3-10.
6. The floating bead refractory gel according to claim 4, wherein said process of mixing the penetrating agent and the binder with a mixed solvent consisting of ethanol and water comprises:
firstly, mixing part of penetrating agent and organic binder for 15-25min to obtain a first mixture; mixing the residual penetrating agent and the inorganic binder for 15-25min to obtain a second mixture; the first mixture and the second mixture are then mixed together with the mixed solvent for 15-25min.
7. The floating bead refractory gel of claim 1, wherein the floating bead refractory gel further comprises: and 0.5-1 part of a second component, wherein the second component is formed by loading a refractory agent on a mesoporous silica nano-carrier, and the loading amount of the refractory agent in the mesoporous silica nano-carrier is 5-10% by weight of the refractory agent.
8. The floating bead refractory gel according to claim 7, wherein the refractory agent consists of calcium titanate and calcium aluminate in a mass ratio of 0.3-0.6:1.
9. The floating bead refractory gel according to claim 7, wherein the mesoporous silica nanocarrier has a pore size of 300nm to 600nm.
10. The floating bead refractory gel according to claim 7, wherein the second component is obtained by the following preparation method:
adding the refractory agent and a mixed solvent consisting of ethanol and water into the mesoporous silica nano-carrier under intense stirring in an ultrasonic environment, wherein the adding speed is 2-4mL/s, the stirring speed is 3000-10000 rpm, and the ultrasonic frequency is 35-50KHz.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211367673.1A CN115716739B (en) | 2022-11-03 | 2022-11-03 | Floating bead fireproof gel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211367673.1A CN115716739B (en) | 2022-11-03 | 2022-11-03 | Floating bead fireproof gel |
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| CN115716739B true CN115716739B (en) | 2023-07-21 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103655207A (en) * | 2013-12-04 | 2014-03-26 | 上海纳米技术及应用国家工程研究中心有限公司 | Drug-loaded mesoporous-silica-reinforced dental binder and preparation method thereof |
| CN112588257A (en) * | 2020-11-17 | 2021-04-02 | 同济大学 | Ordered mesoporous silicon-glass fiber paper composite material and preparation method and application thereof |
| CN112645670A (en) * | 2020-12-29 | 2021-04-13 | 河南安筑装配式防排烟风管有限公司 | Floating bead fireproof heat insulation plate |
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- 2022-11-03 CN CN202211367673.1A patent/CN115716739B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103655207A (en) * | 2013-12-04 | 2014-03-26 | 上海纳米技术及应用国家工程研究中心有限公司 | Drug-loaded mesoporous-silica-reinforced dental binder and preparation method thereof |
| CN112588257A (en) * | 2020-11-17 | 2021-04-02 | 同济大学 | Ordered mesoporous silicon-glass fiber paper composite material and preparation method and application thereof |
| CN112645670A (en) * | 2020-12-29 | 2021-04-13 | 河南安筑装配式防排烟风管有限公司 | Floating bead fireproof heat insulation plate |
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