CN115716739A - Floating bead fireproof gel - Google Patents
Floating bead fireproof gel Download PDFInfo
- Publication number
- CN115716739A CN115716739A CN202211367673.1A CN202211367673A CN115716739A CN 115716739 A CN115716739 A CN 115716739A CN 202211367673 A CN202211367673 A CN 202211367673A CN 115716739 A CN115716739 A CN 115716739A
- Authority
- CN
- China
- Prior art keywords
- binder
- floating bead
- mesoporous silica
- gel
- refractory
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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 fire-resistant gel, in particular to floating bead fire-resistant gel which 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 further comprises the following components: 0.5-1 part of chopped glass fiber and 0.5-1 part of first component; the first component is composed of a mesoporous silica nano-carrier loaded penetrant and a binder, and the loading amount of the penetrant and the binder in the mesoporous silica nano-carrier is 20-30% by weight; the binder includes an organic binder and an inorganic binder. When the floating bead fire-resistant gel is applied and spliced to the floating bead fire-resistant heat-insulating plate, the affinity and the permeability with a binder can be enhanced, the bonded and spliced floating bead fire-resistant heat-insulating plate is connected into a whole through the binder, the service life is long, and the stripping or cracking phenomenon can not occur.
Description
Technical Field
The invention relates to the technical field of floating bead fire-resistant gel, in particular to floating bead fire-resistant gel.
Background
The floating bead is a hollow flyash ball capable of floating on water surface, is grey white, thin and hollow, light, smooth and sealed surface, and has low heat conductivity, so that it is an excellent heat-insulating refractory material widely used in production of light casting material and oil drilling. The floating bead is produced in fly ash, and the fly ash is soaked to float in grey hollow particle.
However, the existing floating bead fire-resistant heat-insulating plate needs to be sealed and bonded during splicing, and due to the self characteristics of the floating bead fire-resistant heat-insulating plate, the existing organic adhesive and inorganic adhesive have insufficient affinity with the floating bead fire-resistant heat-insulating plate, so that the permeability and bonding force are insufficient in the bonding and sealing processes, the bonding is easy to peel off, and the sealing is easy to crack, 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 fire-resistant gel, the floating bead fire-resistant gel can enhance the affinity and permeability with a binder when being applied and spliced to the floating bead fire-resistant heat-insulating board, the bonded and spliced floating bead fire-resistant heat-insulating board is connected into a whole through the binder, the service time is long, and the stripping or cracking phenomenon cannot occur.
In order to achieve the above object, the first aspect of the present invention provides a floating bead fire resistant gel, comprising 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 further comprises the following components: 0.5-1 part of chopped glass fiber and 0.5-1 part of first component; the first component comprises a mesoporous silica nano-carrier loaded penetrating agent and a binder, wherein the loading capacity of the penetrating agent and the binder in the mesoporous silica nano-carrier is 20-30% by weight; 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 1.1-0.35.
According to the invention, the aperture of the mesoporous silica nano-carrier is 300nm-600nm.
According to the invention, the mass ratio of the penetrating agent to the organic binder to the inorganic binder is 1.1-0.2.
More preferably, the first component is obtained by the following preparation method:
mixing a penetrating agent and a binder with a mixed solvent consisting of ethanol and water, and then adding the mixture into the mesoporous silica nano-carrier under vigorous stirring in an ultrasonic environment, wherein the adding speed is 0.2-1mL/s, the stirring speed is 3000rpm-10000rpm, 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 the mixed solvent composed of ethanol and water comprises:
mixing part of penetrating agent and organic binder for 15-25min to obtain a first mixture; mixing the rest penetrating agent and inorganic binder for 15-25min to obtain a second mixture; and then mixing the first mixture and the second mixture together with the mixed solvent for 15-25min.
Preferably, the floating bead fire resistant gel further comprises: 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.
More preferably, the refractory consists of calcium titanate and calcium aluminate in a mass ratio of 0.3 to 0.6.
More preferably, the mesoporous silica nano-carrier has a pore size of 300nm to 600nm.
Preferably, the second component is obtained by the following preparation method:
adding a refractory agent and a mixed solvent consisting of ethanol and water into the mesoporous silica nano carrier under vigorous stirring in an ultrasonic environment, wherein the adding speed is 2-4mL/s, the stirring speed is 3000rpm-10000rpm, and the ultrasonic frequency is 35-50KHz.
Compared with the prior art, the floating bead fire-resistant gel provided by the invention has the advantages that the penetrating agent and the binder in a specific proper proportion are loaded in the mesoporous silica nano carrier, and other technical characteristics are matched, so that the floating bead fire-resistant gel has slow release performance, in the slow release process, the released penetrating agent and the binder can have natural affinity with the binder when the floating bead fire-resistant heat-insulating board is spliced and applied, the penetrating agent and the binder can be better penetrated and fused together, and two adjacent floating bead fire-resistant heat-insulating boards can be fused into an integral structure through the binder; and the released penetrant and adhesive gradually increase the adhesive force with the time. The service time is long, and the stripping or cracking phenomenon can not occur. In addition, the invention can enhance the bonding force and permeability and improve the fire resistance and heat insulation performance by matching with an appropriate amount of chopped glass fiber.
Detailed Description
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.
The invention provides a floating bead fireproof gel in a first aspect, which 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 further comprises the following components: 0.5-1 part of chopped glass fiber and 0.5-1 part of first component; the first component comprises a mesoporous silica nano-carrier loaded penetrating agent and a binder, wherein the loading capacity of the penetrating agent and the binder in the mesoporous silica nano-carrier is 20-30% by weight; 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 1.1-0.35.
According to the invention, the penetrating agent, the organic binder and the inorganic binder in a proper proportion are matched with a proper loading amount, so that the mesoporous silica nano-carrier has excellent slow release performance.
According to the invention, the pore diameter of the mesoporous silica nano-carrier is preferably 300nm-600nm.
According to the invention, the mass ratio of the penetrating agent to the organic binder to the inorganic binder is 1.1-0.2. Under the preferred scheme, the slow release performance of the mesoporous silica nano-carrier is more favorably improved.
More preferably, the first component is obtained by the following preparation method:
mixing a penetrating agent and a binder with a mixed solvent consisting of ethanol and water, and then adding the mixture into the mesoporous silica nano-carrier under vigorous stirring in an ultrasonic environment, wherein the adding speed is 0.2-1mL/s, the stirring speed is 3000rpm-10000rpm, and the ultrasonic frequency is 20-30KHz. Under the preferred scheme, the capillary force of the internal microporous structure of the mesoporous silica nano carrier can be fully utilized to firmly and quickly adsorb the penetrating agent and the binder in the pore canal of the microporous structure; so that the mesoporous silica nano-carrier can store more penetrant and binder.
The volume ratio of ethanol to water in the mixed solvent can be selected by those skilled in the art according to actual requirements, as long as the mixed solvent is favorable for mixing the penetrating agent and the binder, and is favorable for adsorbing more penetrating agent and binder by the mesoporous silica nano-carrier. More preferably, the volume ratio of ethanol to water in the mixed solvent is 1:3-10.
More preferably, the process of mixing the penetrating agent and the binder with the mixed solvent composed of ethanol and water comprises:
mixing part of penetrating agent and organic binder for 15-25min to obtain a first mixture; mixing the rest penetrating agent and inorganic binder for 15-25min to obtain a second mixture; and then mixing the first mixture and the second mixture together with the mixed solvent for 15-25min. Under the preferred scheme, the penetrant and the binder are better fused, so that the penetrant and the binder can be simultaneously released in a sufficient amount when the penetrant and the binder are released, and the permeability and the affinity of the penetrant and the binder for adhesive splicing can be better enhanced.
Preferably, the floating bead fire resistant gel further comprises: 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. Under the preferred scheme, the fire resistance of the floating bead fire-resistant gel is favorably improved, the fire-resistant agent can be released simultaneously during bonding and splicing, the fire resistance of a spliced part is enhanced, the fusion property and the integrity of the floating bead fire-resistant heat-insulating plate and the spliced part are favorably improved, and the stripping or cracking phenomenon is avoided. The refractoriness of the floating bead refractory gel can reach more than 1760 ℃, and the market demand can be met.
More preferably, the refractory consists of calcium titanate and calcium aluminate in a mass ratio of 0.3 to 0.6.
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 a refractory agent and a mixed solvent consisting of ethanol and water into the mesoporous silica nano-carrier under vigorous stirring in an ultrasonic environment, wherein the adding speed is 2-4mL/s, the stirring speed is 3000rpm-10000rpm, and the ultrasonic frequency is 35-50KHz. Under the preferred scheme, the capillary force of the internal microporous structure of the mesoporous silica nano carrier can be fully utilized to firmly and quickly adsorb the refractory agent in the pore canal of the microporous structure; so that the mesoporous silica nano-carrier can store more refractory agents.
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 are all conventional in the art, and can be used in the present invention, and are not described herein again.
The present invention will be described in detail below by way of examples. Among them, the penetrant (T (dioctyl sodium sulfosuccinate)), the organic binder (carboxymethyl cellulose), the inorganic binder (aluminum phosphate) and the fire retardant in examples and comparative examples are 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 first component and 0.6 part of second component; the first component comprises a mesoporous silica nano-carrier loaded penetrating agent and a binder, wherein the loading amount of the penetrating agent and the binder in the mesoporous silica nano-carrier is 25% by weight; 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. 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. And then adding the mesoporous silica nano-carrier into the mesoporous silica nano-carrier under vigorous 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 a mesoporous silica nano carrier, and the loading amount of the refractory agent in the mesoporous silica nano carrier is 6% by weight. 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, a mixed solvent consisting of ethanol and water with the volume ratio of 1:3 into the mesoporous silica nano carrier under the vigorous 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 agent consists of calcium titanate and calcium aluminate with the mass ratio of 0.3. The floating bead refractory gel of this 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 of the composite material meets the index requirements of A (A1) grade of flat building materials and products in GB8624-2012 'Classification of combustion performance of building materials and products'.
The adhesive splicing (which is a combination of an organic adhesive and an inorganic adhesive in a mass ratio of 0.6.
And setting a comparison group: the floating bead fire-resistant gel comprises the following components in parts by weight: 40 parts of floating beads, 50 parts of aluminate cement, 25 parts of calcium oxide and 0.6 part of chopped glass fiber, wherein the refractory agent consists of calcium titanate and calcium aluminate with the mass ratio of 0.3.
The floating bead fire-resistant insulation panels made of the floating bead fire-resistant gels of the present example and the comparison group were respectively subjected to binder splicing (which is a combination of an organic binder and an inorganic binder with a mass ratio of 0.1. A larger ratio W indicates better crack resistance.
Example 2
The process is carried out as in example 1, except that the mass ratio of the penetrant, organic binder and inorganic binder is 1. Corresponding tests were carried out, and the results are shown in Table 2. The floating bead fire-resistant gel of the embodiment is subjected to a combustion performance test, and the combustion performance of the floating bead fire-resistant gel meets the index requirements of A (A1) level of flat building materials and products in GB8624-2012 'fire performance grading of building materials and products'.
Example 3
The procedure is as in example 1, except that the first component is prepared by a different method, specifically: directly mixing the penetrating agent and the binder with a mixed solvent consisting of ethanol and water and the mesoporous silica nano-carrier for 30min. Corresponding tests were carried out, and the results are shown in Table 2. The floating bead fire-resistant gel of the embodiment is subjected to a combustion performance test, and the combustion performance of the floating bead fire-resistant gel meets the index requirements of A (A1) grade of flat building materials and products in GB8624-2012 'building material and product combustion performance grade'.
Example 4
The procedure of example 1 was followed except that the second component consisted only of the refractory agents calcium titanate and calcium aluminate and did not include the mesoporous silica nanocarrier. Corresponding tests were carried out, and the results are shown in Table 2. The floating bead fire-resistant gel of the embodiment is subjected to a combustion performance test, and the combustion performance of the floating bead fire-resistant gel meets the index requirements of A (A1) grade of flat building materials and products in GB8624-2012 'building material and product combustion performance grade'.
Example 5
The procedure is as in example 1 except that the refractory does not contain calcium titanate, but only calcium aluminate. Corresponding tests were carried out, and the results are shown in Table 2. The floating bead fire-resistant gel of the embodiment is subjected to a combustion performance test, and the combustion performance of the floating bead fire-resistant gel meets the index requirements of A (A1) level of flat building materials and products in GB8624-2012 'fire performance grading of building materials and products'.
Comparative example 1
The procedure of example 1 was followed, except that the mesoporous silica nanocarriers were not included in the first and second components, but the respective penetrants, binders, and refractories were directly mixed with the other components. Corresponding tests were carried out, and the results are shown in Table 2.
TABLE 1
TABLE 2
As can be seen from the results of tables 1-2, the examples of the present invention have significantly better effects.
The preferred embodiments of the present invention have been described above in detail, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention, including combinations of various technical features in any other suitable way, and these simple modifications and combinations should also be regarded as the disclosure of the invention, and all fall within the scope of the invention.
Claims (10)
1. The floating bead fire-resistant 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 first component; the first component is composed of a mesoporous silica nano-carrier loaded penetrant and a binder, and the loading amount of the penetrant and the binder in the mesoporous silica nano-carrier is 20-30% by weight; 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 1.1-0.35.
2. The floating bead refractory gel of claim 1, wherein the mesoporous silica nanocarrier has a pore size of 300nm to 600nm.
3. The floating bead fire resistant gel of claim 1 wherein the mass ratio of the penetrant, organic binder and inorganic binder is 1.1-0.2.
4. The floating bead refractory gel of claim 1, wherein said first component is obtained by the following preparation method:
mixing a penetrating agent and a binder with a mixed solvent consisting of ethanol and water, and then adding the mixture into the mesoporous silica nano-carrier under vigorous stirring in an ultrasonic environment, wherein the adding speed is 0.2-1mL/s, the stirring speed is 3000rpm-10000rpm, and the ultrasonic frequency is 20-30KHz.
5. The floating bead fire resistant 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 fire resistant gel of claim 4 wherein said mixing of said penetrant and binder with a solvent mixture of ethanol and water comprises:
mixing part of penetrating agent and organic binder for 15-25min to obtain a first mixture; mixing the rest penetrating agent and inorganic binder for 15-25min to obtain a second mixture; and then mixing the first mixture and the second mixture together with the mixed solvent for 15-25min.
7. The floating bead fire resistant gel of claim 1 further comprising: 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.
8. The floating bead refractory gel of claim 7, wherein said refractory agent consists of calcium titanate and calcium aluminate in a mass ratio of 0.3-0.6.
9. The floating bead refractory gel of claim 7, wherein the mesoporous silica nanocarrier has a pore size of 300nm to 600nm.
10. The floating bead fire resistant gel of claim 7 wherein said second component is obtained by the following preparation method:
adding a refractory agent and a mixed solvent consisting of ethanol and water into the mesoporous silica nano carrier under vigorous stirring in an ultrasonic environment, wherein the adding speed is 2-4mL/s, the stirring speed is 3000rpm-10000rpm, and the ultrasonic frequency is 35-50KHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211367673.1A CN115716739B (en) | 2022-11-03 | 2022-11-03 | Floating bead fireproof gel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211367673.1A CN115716739B (en) | 2022-11-03 | 2022-11-03 | Floating bead fireproof gel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115716739A true CN115716739A (en) | 2023-02-28 |
| CN115716739B CN115716739B (en) | 2023-07-21 |
Family
ID=85254663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211367673.1A Active CN115716739B (en) | 2022-11-03 | 2022-11-03 | Floating bead fireproof gel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115716739B (en) |
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 |
-
2022
- 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115716739B (en) | 2023-07-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108558310A (en) | A kind of high performance lightweight aggregate concrete and preparation method thereof adding silicon ash and polypropylene fibre | |
| CN115716739A (en) | Floating bead fireproof gel | |
| CN107857522B (en) | Thermal insulation mortar and preparation method and application thereof | |
| CN110615656A (en) | Fireproof sound-absorbing substrate based on magnesium oxysulfate material and application thereof | |
| CN2490248Y (en) | Paper plaster slab with water-proof and fire-resistant function | |
| CN114086678A (en) | Fireproof heat-preservation rock wool board and preparation method thereof | |
| CN116285433B (en) | Preparation method and application method of inorganic waterproof flame-retardant sound-absorbing coating | |
| US2481390A (en) | Method of applying sodium silicate binder | |
| CN115893957B (en) | High-stability expansion plugging material and preparation process thereof | |
| CN106631119B (en) | High-strength light microporous spinel, preparation method thereof and high-temperature-resistant brick | |
| CN113336559A (en) | Refractory brick with heat preservation effect and processing technology | |
| CN109503027B (en) | Flame-retardant transparent concrete | |
| CN109956734B (en) | Fireproof paper-surface gypsum board and preparation method thereof | |
| CN115044232A (en) | Steel structure fireproof coating and preparation method and use method thereof | |
| CN112063309B (en) | Single-component high-temperature fireproof inorganic adhesive for sealing and repairing high-temperature equipment | |
| CN115124891A (en) | Interface agent for fireproof coating and preparation method and application thereof | |
| CN109704794B (en) | Recyclable high-aluminum flame-retardant and fire-resistant composite material and preparation method thereof | |
| CN113292268A (en) | Additive for lightweight concrete plate, concrete and preparation method of lightweight concrete plate | |
| CN113764821A (en) | Boron nitride fiber diaphragm, diaphragm preparation method and lithium thermal battery | |
| CN113135709A (en) | Fireproof mortar, preparation method and application | |
| KR102584804B1 (en) | Composite panel for fireproof bulkhead and manufacturing method thereof | |
| CN115521114B (en) | C30 recycled concrete and preparation method thereof | |
| CN112608110B (en) | Multi-layer-structure ceramsite sound absorption plate for sound barrier and preparation method thereof | |
| CN203603285U (en) | Light fire-proof cement insulation board | |
| CN112480828B (en) | Composite binder for inorganic insulation board and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |