CN111018440A - Building exterior wall heat-insulating anti-cracking waterproof material and preparation method thereof - Google Patents
Building exterior wall heat-insulating anti-cracking waterproof material and preparation method thereof Download PDFInfo
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- CN111018440A CN111018440A CN201911333379.7A CN201911333379A CN111018440A CN 111018440 A CN111018440 A CN 111018440A CN 201911333379 A CN201911333379 A CN 201911333379A CN 111018440 A CN111018440 A CN 111018440A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention discloses a building external wall heat-insulating anti-cracking waterproof material and a preparation method thereof, wherein the building external wall heat-insulating anti-cracking waterproof material comprises the following raw materials in parts by weight: 10-60 parts of Portland cement, 1-15 parts of aerogel, 1-20 parts of polyphenyl particles, 0.5-10 parts of methyl cellulose, 1-15 parts of anti-crack fiber, 1-30 parts of VAE rubber powder, 5-20 parts of ash calcium powder, 5-20 parts of fly ash and 1-15 parts of methyl silicic acid. The invention effectively improves the waterproof and anti-cracking performance of the external wall insulation material, has good insulation effect and excellent comprehensive performance, and greatly improves the quality stability and the use durability of the external wall insulation material.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a thermal insulation anti-cracking waterproof material for an external wall of a building and a preparation method thereof.
Background
With the development of economy and the continuous improvement of living standard of people, the requirement on building quality is higher and higher, and the market demand on novel high-performance building materials is stronger and stronger. The heat insulation and preservation of the building are important aspects of saving energy, improving living environment and using function, the heat loss of the building can be reduced or reduced by the building external wall heat preservation material, so that the heat preservation effect is achieved, and the development and development of the building are paid more and more attention. However, the traditional building external wall thermal insulation material has the defects of poor water resistance and poor crack resistance, and in the practical application process, the problems of cracks, leakage and the like are often generated, so that the engineering quality, the service performance and the service life of the external wall thermal insulation material are adversely affected. Therefore, the waterproof and anti-cracking performance of the building external wall heat-insulating material is improved, and the method has very important significance.
Disclosure of Invention
Based on the technical problems in the prior art, the invention provides the thermal insulation anti-cracking waterproof material for the building outer wall and the preparation method thereof, which effectively improve the waterproof and anti-cracking performance of the thermal insulation material for the building outer wall, have good thermal insulation effect and excellent comprehensive performance.
The invention provides a thermal insulation anti-cracking waterproof material for an exterior wall of a building, which comprises the following raw materials in parts by weight:
10-60 parts of Portland cement, 1-15 parts of aerogel, 1-20 parts of polyphenyl particles, 0.5-10 parts of methyl cellulose, 1-15 parts of anti-crack fiber, 1-30 parts of VAE rubber powder, 5-20 parts of ash calcium powder, 5-20 parts of fly ash and 1-15 parts of methyl silicic acid.
Preferably, the polyphenyl particles are coated modified polyphenyl particles, and the coated modified polyphenyl particles are obtained by uniformly mixing modified emulsified asphalt and polyphenyl particles and completely evaporating a solvent.
Preferably, the preparation method of the modified emulsified asphalt comprises the following steps: adding nano montmorillonite, nano cellulose and emulsifier into water, mixing uniformly to obtain a suspension, heating the suspension to 70-90 ℃, heating SBS modified asphalt to 170-180 ℃, adding SBS modified asphalt into the suspension under the stirring condition of 6000-8000r/min, continuing stirring for 30-60min, and cooling to obtain the modified asphalt.
Preferably, the weight ratio of the SBS modified asphalt to the nano montmorillonite to the nano cellulose to the emulsifier to the water is (45-55): (1-2): (0.5-1): (1-1.5): 100.
preferably, the emulsifier is a mixture of an anionic emulsifier and a nonionic emulsifier; preferably, the weight ratio of the anionic emulsifier to the nonionic emulsifier is (1-3): 1; preferably, the anionic emulsifier is sodium dodecyl sulfate, and the nonionic emulsifier is nonylphenol polyoxyethylene ether.
Preferably, the SBS modified asphalt is prepared by taking SBS and base asphalt as raw materials, and the weight ratio of the SBS to the base asphalt is (0.05-0.1): 1.
Preferably, the specific preparation method of the SBS modified asphalt comprises the following steps: heating the matrix asphalt to 160-18 ℃, then adding SBS, and shearing for 1-2h at 8000-.
Preferably, the weight ratio of the modified emulsified asphalt to the polyphenyl particles is (0.1-0.2): 1.
preferably, the portland cement is 425 portland cement.
Preferably, the aerogel is SiO2Aerogel, more preferably, the aerogel is silane coupling agent modified SiO2An aerogel.
Preferably, the silane coupling agent modifies SiO2The specific preparation method of the aerogel is as follows: mixing SiO2Uniformly mixing the aerogel with a silane coupling agent aqueous solution with the mass fraction of 3-5% according to the weight ratio, stirring for 5-10min, and then filtering and drying to obtain the aerogel.
Preferably, the silane coupling agent is KH550, KH570, a151 or a 171.
Preferably, the polyphenyl granules have an average particle diameter of 1.5-2.5mm and a volume weight of 20-50kg/m3。
Preferably, the anti-crack fibers are polypropylene fibers, and more preferably, the anti-crack fibers are prepared by mixing 3-5mm long polypropylene fibers, 6-8mm long polypropylene fibers and 9-12mm long polypropylene fibers in a weight ratio of (2-4): (6-8): (1-2).
The preparation method of the building exterior wall heat-insulating anti-cracking waterproof material comprises the following steps:
s1, mixing and stirring the portland cement, the aerogel, the methyl cellulose, the anti-crack fiber, the VAE rubber powder, the ash calcium powder, the fly ash and the methyl silicic acid uniformly;
s2, adding the polyphenyl granules into the material obtained in the step S1, and uniformly mixing and stirring to obtain the polyphenyl granules.
The invention has the following beneficial effects:
among the raw materials of the present invention, SiO2The aerogel is a light and porous material with low density, high porosity and low thermal conductivity, and can improve the heat preservation and insulation performance of the material; the VAE rubber powder can improve the workability and the adhesive property of the material; the methyl cellulose can improve the workability and the application property of the material; the anti-cracking fiber can play a toughening role, improve the breaking strength of the material and reduce the bending ratio, thereby improving the anti-cracking performance; the fly ash can effectively fill gaps of the mortar and reduce the number of harmful holes in the mortar, so that the breaking strength is improved, the compression-fracture ratio is reduced, and the crack resistance of the material is improved; the methylsilicic acid has good penetrating crystallinity, silanol groups in the molecular structure of the methylsilicic acid react with silanol groups in a silicate material for dehydration and crosslinking, so that an excellent hydrophobic layer is formed by an inverse capillary effect, and the methylsilicic acid has the functions of micro-expansion, compactness increase and water resistance improvement of the material. The invention uses silicate cement, polyphenyl granules and SiO2The outer wall thermal insulation material is prepared from aerogel, polyphenyl particles, methyl cellulose, anti-cracking fibers, VAE rubber powder, ash calcium powder, fly ash and methyl silicic acid in a proper proportion, so that the material has good thermal insulation effect and excellent water resistance and anti-cracking performance.
The invention also takes the modified emulsified asphalt obtained by blending the nano montmorillonite, the nano cellulose and the emulsified SBS modified asphalt as a coating agent to form a coating layer on the surface of the polyphenyl granules, wherein the SBS is a styrene-butadiene-styrene block copolymer and has good compatibility with the polyphenyl granules, the bonding performance of the polyphenyl granules and the coating layer of the modified asphalt is enhanced, and the asphalt has excellent water resistance and toughness, and the water resistance and the crack resistance of the material can be improved; the nano montmorillonite can form an intercalated structure in the modified asphalt coating layer by doping, the barrier property is improved, the water resistance of the material is further improved, the toughness of the modified asphalt coating layer can be improved by the nano cellulose, and the compatibility of the coating layer and cement can be improved by the nano montmorillonite and the nano cellulose which have hydrophilicity.By coating and modifying the surfaces of the polyphenyl particles, the compatibility of the polyphenyl particles and cement can be improved, and the water resistance and the crack resistance of the material can be further improved; by coupling of SiO with silane coupling agent2The aerogel is subjected to hydrophobic modification to reduce SiO2The water absorption of the aerogel further improves the water resistance of the material; the polypropylene fibers with different lengths are combined to be used as the anti-cracking fibers, so that the toughening and anti-cracking effects of the polypropylene fibers can be more effectively exerted, and the agglomeration caused by uneven dispersion of the polypropylene fibers is avoided, thereby further improving the anti-cracking performance of the material.
The invention effectively improves the waterproof and anti-cracking performance of the external wall insulation material, has good insulation effect and excellent comprehensive performance, and greatly improves the quality stability and the use durability of the external wall insulation material.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
Example 1
A thermal insulation anti-cracking waterproof material for a building exterior wall comprises the following raw materials in parts by weight:
425 parts of Portland cement, SiO21 part of aerogel, 1 part of polyphenyl particles, 0.5 part of methyl cellulose, 1 part of anti-crack fiber, 1 part of VAE rubber powder, 5 parts of ash calcium powder, 5 parts of fly ash and 1 part of methyl silicic acid.
Wherein the average particle diameter of the polyphenyl granules is 1.5mm, and the volume weight is 20kg/m3The anti-crack fiber is polypropylene fiber with the length of 6 mm.
Example 2
A thermal insulation anti-cracking waterproof material for a building exterior wall comprises the following raw materials in parts by weight:
425 parts of Portland cement, SiO21 part of aerogel, 1 part of coated modified polyphenyl particles, 0.5 part of methyl cellulose, 1 part of anti-crack fiber, 1 part of VAE rubber powder, 5 parts of ash calcium powder, 5 parts of fly ash and 1 part of methyl silicic acid.
The coating modified polyphenyl granules are prepared by mixing modified emulsified asphalt and polyphenyl granules according to the weight ratio of 0.1:1, mixing uniformly, and completely evaporating the solvent to obtain the polyphenyl granuleThe average particle diameter is 1.5mm, and the volume weight is 20kg/m3。
The preparation method of the modified emulsified asphalt comprises the following steps: adding nano montmorillonite, nano cellulose and emulsifier into water, uniformly mixing to obtain a suspension, heating the suspension to 70 ℃, heating SBS modified asphalt to 170 ℃, adding SBS modified asphalt into the suspension under the stirring condition of 6000r/min, continuously stirring for 30min, and cooling to obtain the modified asphalt, wherein the weight ratio of SBS modified asphalt to nano montmorillonite to nano cellulose to emulsifier to water is 45: 1: 0.5: 1: 100.
the emulsifier is a mixture of sodium dodecyl sulfate and nonylphenol polyoxyethylene ether, wherein the weight ratio of the sodium dodecyl sulfate to the nonylphenol polyoxyethylene ether is 1: 1.
the SBS modified asphalt is prepared from SBS and matrix asphalt, wherein the weight ratio of SBS to matrix asphalt is 0.05: 1.
The anti-crack fiber is polypropylene fiber with the length of 6 mm.
Example 3
A thermal insulation anti-cracking waterproof material for a building exterior wall comprises the following raw materials in parts by weight:
425 parts of Portland cement, silane coupling agent modified SiO21 part of aerogel, 1 part of coated modified polyphenyl particles, 0.5 part of methyl cellulose, 1 part of anti-crack fiber, 1 part of VAE rubber powder, 5 parts of ash calcium powder, 5 parts of fly ash and 1 part of methyl silicic acid.
The coating modified polyphenyl granules are prepared by mixing modified emulsified asphalt and polyphenyl granules according to the weight ratio of 0.1:1, and completely evaporating the solvent to obtain polyphenyl granules with the average particle size of 1.5mm and the volume weight of 20kg/m3。
The preparation method of the modified emulsified asphalt comprises the following steps: adding nano montmorillonite, nano cellulose and emulsifier into water, uniformly mixing to obtain a suspension, heating the suspension to 70 ℃, heating SBS modified asphalt to 170 ℃, adding SBS modified asphalt into the suspension under the stirring condition of 6000r/min, continuously stirring for 30min, and cooling to obtain the modified asphalt, wherein the weight ratio of SBS modified asphalt to nano montmorillonite to nano cellulose to emulsifier to water is 45: 1: 0.5: 1: 100.
the emulsifier is a mixture of sodium dodecyl sulfate and nonylphenol polyoxyethylene ether, wherein the weight ratio of the sodium dodecyl sulfate to the nonylphenol polyoxyethylene ether is 1: 1.
the SBS modified asphalt is prepared from SBS and matrix asphalt, wherein the weight ratio of SBS to matrix asphalt is 0.05: 1.
The anti-crack fiber is prepared from 3mm polypropylene fiber, 6mm polypropylene fiber and 9mm polypropylene fiber according to the weight ratio of 2: 6: 1.
Example 4
A thermal insulation anti-cracking waterproof material for a building exterior wall comprises the following raw materials in parts by weight:
425 parts of Portland cement, silane coupling agent modified SiO25 parts of aerogel, 5 parts of coated modified polyphenyl particles, 4 parts of methyl cellulose, 5 parts of anti-crack fibers, 5 parts of VAE rubber powder, 10 parts of sierozem powder, 15 parts of fly ash and 6 parts of methyl silicic acid.
The coating modified polyphenyl granules are prepared by mixing modified emulsified asphalt and polyphenyl granules according to the weight ratio of 0.15: 1, and completely evaporating the solvent to obtain polyphenyl granules with the average particle size of 2mm and the volume weight of 30kg/m3。
The preparation method of the modified emulsified asphalt comprises the following steps: adding nano montmorillonite, nano cellulose and emulsifier into water, uniformly mixing to obtain a suspension, heating the suspension to 80 ℃, heating SBS modified asphalt to 175 ℃, adding SBS modified asphalt into the suspension under the stirring condition of 7000r/min, continuously stirring for 40min, and cooling to obtain the modified asphalt, wherein the weight ratio of SBS modified asphalt to nano montmorillonite to nano cellulose to emulsifier to water is 50: 1.5: 0.8: 1.2: 100.
the emulsifier is a mixture of sodium dodecyl sulfate and nonylphenol polyoxyethylene ether, wherein the weight ratio of the sodium dodecyl sulfate to the nonylphenol polyoxyethylene ether is 2: 1.
the SBS modified asphalt is prepared by taking SBS and base asphalt as raw materials, wherein the weight ratio of the SBS to the base asphalt is 0.08: 1.
The anti-crack fiber is prepared from 4mm polypropylene fiber, 6mm polypropylene fiber and 10mm polypropylene fiber according to the weight ratio of 3: 7.5: 1.5.
Example 5
A thermal insulation anti-cracking waterproof material for a building exterior wall comprises the following raw materials in parts by weight:
425 parts of Portland cement, silane coupling agent modified SiO215 parts of aerogel, 20 parts of coated modified polyphenyl particles, 10 parts of methyl cellulose, 15 parts of anti-crack fibers, 30 parts of VAE rubber powder, 20 parts of ash calcium powder, 20 parts of fly ash and 15 parts of methyl silicic acid.
The coating modified polyphenyl granules are prepared by mixing modified emulsified asphalt and polyphenyl granules according to the weight ratio of 0.2: 1, and completely evaporating the solvent to obtain polyphenyl granules with the average particle size of 2.5mm and the volume weight of 50kg/m3。
The preparation method of the modified emulsified asphalt comprises the following steps: adding nano montmorillonite, nano cellulose and emulsifier into water, uniformly mixing to obtain a suspension, heating the suspension to 90 ℃, heating SBS modified asphalt to 180 ℃, adding SBS modified asphalt into the suspension under the stirring condition of 8000r/min, continuously stirring for 60min, and cooling to obtain the modified asphalt, wherein the weight ratio of SBS modified asphalt to nano montmorillonite to nano cellulose to emulsifier to water is 55: 2: 1: 1.5: 100.
the emulsifier is a mixture of sodium dodecyl sulfate and nonylphenol polyoxyethylene ether, wherein the weight ratio of the sodium dodecyl sulfate to the nonylphenol polyoxyethylene ether is 3: 1.
the SBS modified asphalt is prepared by taking SBS and matrix asphalt as raw materials, wherein the weight ratio of the SBS to the matrix asphalt is 0.1: 1.
The anti-crack fiber is prepared from 5mm polypropylene fiber, 8mm polypropylene fiber and 12mm polypropylene fiber according to the weight ratio of 4: 8: 2.
The external wall thermal insulation materials prepared in the embodiments 1 to 5 were mixed with water to prepare mortar, and then the performance of the mortar was tested. The compressive strength refers to JGJ/T70-2009 test method for basic performance of building mortar, the breaking strength refers to GBT17671-1999 cement mortar strength test method (ISO method), the compression strength/breaking strength ratio, the water resistance refers to GBT50081-2002 test method for mechanical properties of ordinary concrete, and the thermal conductivity refers to JGJ 51-1990 technical specification for lightweight aggregate concrete. The test results are shown in table 1:
table 1 results of performance testing
As can be seen from Table 1, the mortar prepared from the external wall thermal insulation material has high compressive strength, high flexural strength, low flexural ratio, low water absorption and low thermal conductivity, high mechanical strength and excellent anti-cracking, water-resistant and thermal insulation properties.
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 building exterior wall heat-insulating anti-cracking waterproof material is characterized by comprising the following raw materials in parts by weight:
10-60 parts of Portland cement, 1-15 parts of aerogel, 1-20 parts of polyphenyl particles, 0.5-10 parts of methyl cellulose, 1-15 parts of anti-crack fiber, 1-30 parts of VAE rubber powder, 5-20 parts of ash calcium powder, 5-20 parts of fly ash and 1-15 parts of methyl silicic acid.
2. The thermal insulation anti-cracking waterproof material for the exterior wall of the building as claimed in claim 1, wherein the polyphenyl particles are coated modified polyphenyl particles, and the coated modified polyphenyl particles are obtained by uniformly mixing modified emulsified asphalt and polyphenyl particles and completely evaporating a solvent.
3. The building exterior wall thermal insulation anti-cracking waterproof material as claimed in claim 2, wherein the preparation method of the modified emulsified asphalt comprises the following steps: adding nano montmorillonite, nano cellulose and emulsifier into water, mixing uniformly to obtain a suspension, heating the suspension to 70-90 ℃, heating SBS modified asphalt to 170-180 ℃, adding SBS modified asphalt into the suspension under the stirring condition of 6000-8000r/min, continuing stirring for 30-60min, and cooling to obtain the modified asphalt; preferably, the weight ratio of the SBS modified asphalt to the nano montmorillonite to the nano cellulose to the emulsifier to the water is (45-55): (1-2): (0.5-1): (1-1.5): 100.
4. the thermal insulation, crack resistance and water resistance material for the external wall of the building as claimed in claim 3, wherein the emulsifier is a mixture of an anionic emulsifier and a nonionic emulsifier; preferably, the weight ratio of the anionic emulsifier to the nonionic emulsifier is (1-3): 1; preferably, the anionic emulsifier is sodium dodecyl sulfate, and the nonionic emulsifier is nonylphenol polyoxyethylene ether.
5. The thermal insulation anti-cracking waterproof material for the external wall of the building as claimed in claim 3 or 4, wherein the SBS modified asphalt is prepared by taking SBS and matrix asphalt as raw materials, and preferably, the weight ratio of the SBS to the matrix asphalt is (0.05-0.1): 1.
6. The building exterior wall thermal insulation anti-cracking waterproof material as claimed in any one of claims 2 to 5, wherein the weight ratio of the modified emulsified asphalt to the polyphenyl particles is (0.1-0.2): 1.
7. the building exterior wall thermal insulation anti-cracking waterproof material as claimed in any one of claims 1 to 6, wherein the aerogel is SiO2Aerogel, preferably, the aerogel is SiO modified by silane coupling agent2An aerogel.
8. The thermal insulation, crack resistance and waterproof material for the external wall of the building as claimed in any one of claims 1 to 7, wherein the average particle diameter of the polyphenyl granules is 1.5 to 2.5mm, and the volume weight is 20 to 50kg/m3。
9. The building exterior wall thermal insulation anti-crack waterproof material according to any one of claims 1 to 8, wherein the anti-crack fibers are polypropylene fibers, preferably, the anti-crack fibers are formed by mixing polypropylene fibers with a length of 3-5mm, polypropylene fibers with a length of 6-8mm and polypropylene fibers with a length of 9-12mm according to a weight ratio of (2-4): (6-8): (1-2).
10. The preparation method of the thermal insulation, crack resistance and waterproof material for the external wall of the building as claimed in any one of claims 1 to 9, characterized by comprising the following steps:
s1, mixing and stirring the portland cement, the aerogel, the methyl cellulose, the anti-crack fiber, the VAE rubber powder, the ash calcium powder, the fly ash and the methyl silicic acid uniformly;
s2, adding the polyphenyl granules into the material obtained in the step S1, and uniformly mixing and stirring to obtain the polyphenyl granules.
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Application publication date: 20200417 |
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