CN108033714B - Yellow river mud mortar building plastering dry material and preparation method thereof - Google Patents
Yellow river mud mortar building plastering dry material and preparation method thereof Download PDFInfo
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- CN108033714B CN108033714B CN201711095089.4A CN201711095089A CN108033714B CN 108033714 B CN108033714 B CN 108033714B CN 201711095089 A CN201711095089 A CN 201711095089A CN 108033714 B CN108033714 B CN 108033714B
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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
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/38—Polysaccharides or derivatives thereof
- C04B24/383—Cellulose or derivatives thereof
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/40—Compounds containing silicon, titanium or zirconium or other organo-metallic compounds; Organo-clays; Organo-inorganic complexes
- C04B24/42—Organo-silicon compounds
-
- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/29—Frost-thaw resistance
-
- 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 yellow river mud mortar building plastering dry material and a preparation method thereof, wherein the yellow river mud mortar building plastering dry material comprises the following raw materials in parts by weight: 65-80 parts of yellow river sand, 20-25 parts of cement, 8-12 parts of fly ash, 3-8 parts of gypsum and 5-15 parts of self-made adhesive; the yellow river mud mortar building plastering dry material expands the raw material range of building plastering materials, and can achieve the bonding strength and the compressive strength of plastering mortar by singly adopting yellow river mud sand without matching with conventional gravels such as coarse sand, natural sand and the like; moreover, waste is changed into valuable, and the problem that the yellow river silt is deposited on the river channel is solved; the building plastering dry material overcomes the problem of crack hollowing of the traditional plastering mortar by selecting the components and the adding proportion of each material, and has the functions of crack resistance and hollowing resistance; the water consumption is small, the consistency is moderate, the setting time is short, the plastering is not layered, the water retention rate is high, the bonding strength and the compressive strength are higher, the shrinkage rate is low, and the frost resistance and the impermeability are good.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a yellow river mud mortar building plastering dry material and a preparation method thereof.
Background
For a long time, sand used in building mortar is divided into four specifications of coarse, medium, fine and extra-fine according to fineness modulus, and the fineness modulus is 3.7-3.1, 3.0-2.3, 2.2-1.6 and 1.5-0.7 respectively; the fineness modulus of the common building sand is 3.7-1.6, and the small amount of coarse sand and fine sand is calculated according to the following ratio of 4: 1 by mass. The yellow river sand is also called yellow river top sand and yellow river extra fine sand, because the modulus of the sand is only 0.7, the sand is greatly lower than the modulus requirement of common concrete, the texture is fine, the mud content of the sand is high, generally about 5.8 percent, the mud block content is 10.2 percent and is far higher than the requirement that the highest value of the mud content of the sand for preparing concrete in China is 5 percent and the highest value of the mud block content is 2 percent, the sand has high mud content and absorbs much water, the cracking of a building is easily caused, the construction requirement of the concrete is not met in principle, a large amount of coarse sand, natural sand or artificial sand is required to be added for mixing at present, the physical and mechanical properties and the durability of the yellow river sand mortar are improved, and the sand cannot be used as a sand stone material of the concrete independently.
The amount of the yellow river sand is large, the annual average sand conveying amount from midstream to downstream of the yellow river is 16 hundred million tons, 4 hundred million tons of the yellow river sand are deposited on a downstream riverbed, and the yellow river sand is deposited to have huge potential flood overflow hazards, so that the safety of lives and properties of people at two sides of the yellow river is seriously endangered, and the development of economic construction of a yellow river basin is limited, so that the yellow river sand is turned into wealth to be urgently solved.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a yellow river mud mortar building plastering dry material and a preparation method thereof.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a yellow river mud mortar building plastering dry material comprises the following raw materials in parts by weight: 65-80 parts of yellow river sand, 20-25 parts of cement, 8-12 parts of fly ash, 3-8 parts of gypsum and 5-15 parts of self-made adhesive; the self-made adhesive is obtained according to the following steps:
firstly, adding polyvinyl alcohol into 6-8 times of water by weight to dissolve, adding 30% hydrogen peroxide solution, stirring and reacting for half an hour, adding dextrin water slurry, continuously stirring and reacting for half an hour, and performing spray drying to obtain dextrin modified polyvinyl alcohol particles; wherein the dextrin water slurry is prepared from dextrin and water according to the mass ratio of 1: 3-4, and uniformly mixing; the mass ratio of the polyvinyl alcohol to the 30% hydrogen peroxide solution to the dextrin water slurry is 1: 0.01-0.05: 1-2;
adding methyltrimethoxysilane into water with the weight being 10-15 times of that of the methyltrimethoxysilane, stirring to obtain a solution, adjusting the pH to 2-3 by using hydrochloric acid, heating to 40-50 ℃, hydrolyzing for 10-15 hours to obtain a cross-linked solution, adding hydroxypropyl methyl cellulose into the cross-linked solution, stirring and mixing uniformly, and performing spray drying to obtain silane modified hydroxypropyl methyl cellulose; wherein the mass ratio of the methyltrimethoxysilane to the hydroxypropyl methylcellulose is 1: 2-5;
and thirdly, mixing the dextrin modified polyvinyl alcohol particles obtained in the step I and the silane modified hydroxypropyl methyl cellulose obtained in the step II according to a mass ratio of 10-15: 1 to obtain the self-made adhesive.
Preferably, the feed consists of the following raw materials in parts by weight: 68-75 parts of yellow river sand, 24-25 parts of cement, 9-11 parts of fly ash, 4-6 parts of gypsum and 8-12 parts of self-made adhesive.
Preferably, the self-made adhesive is obtained by the following steps:
firstly, adding polyvinyl alcohol into water with the weight 7 times of that of the polyvinyl alcohol for dissolving, adding 30% hydrogen peroxide solution, stirring for oxidation reaction for half an hour, adding dextrin water slurry, continuously stirring for reaction for half an hour, and performing spray drying to obtain dextrin modified polyvinyl alcohol particles; wherein the dextrin water slurry is prepared from dextrin and water according to the mass ratio of 1: 4, uniformly mixing the components in a ratio of; the mass ratio of the polyvinyl alcohol to the 30% hydrogen peroxide solution to the dextrin water slurry is 1: 0.04: 2;
adding methyltrimethoxysilane into water with the weight being 12 times of that of the mixture, stirring to obtain a solution, regulating the pH value to 2 by using hydrochloric acid, heating to 45 ℃, hydrolyzing for 12 hours to obtain a cross-linked solution, adding hydroxypropyl methyl cellulose into the cross-linked solution, stirring and mixing uniformly, and performing spray drying to obtain silane modified hydroxypropyl methyl cellulose; wherein the mass ratio of the methyltrimethoxysilane to the hydroxypropyl methylcellulose is 1: 4;
thirdly, mixing the dextrin modified polyvinyl alcohol particles obtained in the step I and the silane modified hydroxypropyl methyl cellulose obtained in the step II according to the mass ratio of 12: 1 to obtain the self-made adhesive.
Preferably, the feed consists of the following raw materials in parts by weight: 70 parts of yellow river sand, 24 parts of cement, 10 parts of fly ash, 5 parts of gypsum and 10 parts of self-made adhesive.
The invention also comprises a preparation method of the yellow river mud mortar building plastering dry material, which comprises the following steps:
firstly, adding polyvinyl alcohol into 6-8 times of water by weight to dissolve, adding 30% hydrogen peroxide solution, stirring and reacting for half an hour, adding dextrin water slurry, continuously stirring and reacting for half an hour, and performing spray drying to obtain dextrin modified polyvinyl alcohol particles; wherein the dextrin water slurry is prepared from dextrin and water according to the mass ratio of 1: 3-4, and uniformly mixing; the mass ratio of the polyvinyl alcohol to the 30% hydrogen peroxide solution to the dextrin water slurry is 1: 0.01-0.05: 1-2;
adding methyltrimethoxysilane into water with the weight being 10-15 times of that of the methyltrimethoxysilane, stirring to obtain a solution, adjusting the pH to 2-3 by using hydrochloric acid, heating to 40-50 ℃, hydrolyzing for 10-15 hours to obtain a cross-linked solution, adding hydroxypropyl methyl cellulose into the cross-linked solution, stirring and mixing uniformly, and performing spray drying to obtain silane modified hydroxypropyl methyl cellulose; wherein the mass ratio of the methyltrimethoxysilane to the hydroxypropyl methylcellulose is 1: 2-5;
and thirdly, mixing the dextrin modified polyvinyl alcohol particles obtained in the step I and the silane modified hydroxypropyl methyl cellulose obtained in the step II according to a mass ratio of 10-15: 1, uniformly mixing to obtain a self-made adhesive;
and fourthly, uniformly mixing 65-80 parts by weight of yellow river sand, 20-25 parts by weight of cement, 8-12 parts by weight of fly ash, 3-8 parts by weight of gypsum and 5-15 parts by weight of the self-made adhesive obtained in the third step to obtain the yellow river mud mortar building plastering dry material.
A preferred method of preparation comprises the steps of:
firstly, adding polyvinyl alcohol into water with the weight 7 times of that of the polyvinyl alcohol for dissolving, adding 30% hydrogen peroxide solution, stirring for oxidation reaction for half an hour, adding dextrin water slurry, continuously stirring for reaction for half an hour, and performing spray drying to obtain dextrin modified polyvinyl alcohol particles; wherein the dextrin water slurry is prepared from dextrin and water according to the mass ratio of 1: 4, uniformly mixing the components in a ratio of; the mass ratio of the polyvinyl alcohol to the 30% hydrogen peroxide solution to the dextrin water slurry is 1: 0.04: 2;
adding methyltrimethoxysilane into water with the weight being 12 times of that of the mixture, stirring to obtain a solution, regulating the pH value to 2 by using hydrochloric acid, heating to 45 ℃, hydrolyzing for 12 hours to obtain a cross-linked solution, adding hydroxypropyl methyl cellulose into the cross-linked solution, stirring and mixing uniformly, and performing spray drying to obtain silane modified hydroxypropyl methyl cellulose; wherein the mass ratio of the methyltrimethoxysilane to the hydroxypropyl methylcellulose is 1: 4;
thirdly, mixing the dextrin modified polyvinyl alcohol particles obtained in the step I and the silane modified hydroxypropyl methyl cellulose obtained in the step II according to the mass ratio of 12: 1, uniformly mixing to obtain a self-made adhesive;
and fourthly, uniformly mixing 70 parts of yellow river sand, 24 parts of cement, 10 parts of fly ash, 5 parts of gypsum and 10 parts of the self-made adhesive obtained in the third step to obtain the yellow river mud mortar building plastering dry material.
Compared with the prior art, the invention has the following advantages:
the yellow river mud mortar building plastering dry material expands the raw material range of building plastering materials, and can achieve the bonding strength and the compressive strength of plastering mortar by singly adopting yellow river mud sand without matching with conventional gravels such as coarse sand, natural sand and the like; moreover, waste is changed into valuable, and the problem that the yellow river silt is deposited on the river channel is solved;
the yellow river mud mortar building plastering dry material overcomes the problem of crack hollowing of the traditional plastering mortar by selecting the components and the adding proportion of each material, and has the functions of crack resistance and hollowing resistance; the water consumption is small, the consistency is moderate, the setting time is short, the plastering is not layered, the water retention rate is high, the bonding strength and the compressive strength are higher, the shrinkage rate is low, and the frost resistance and the impermeability are good.
The yellow river sand adopted in the yellow river mud mortar building plastering dry material is small in modulus and high in mud content, cannot be independently used for building plastering materials, and basically needs to be mixed with sand such as coarse sand or artificial sand for use, the addition amount of the yellow river sand is small and generally accounts for 5-10% of the total amount of the sand, but the yellow river sand can reach the standard of building plastering materials due to the fact that a self-made adhesive is added and is mixed with cement, fly ash and gypsum in a certain weight part.
The dextrin-modified polyvinyl alcohol component in the self-made adhesive disclosed by the invention not only retains the advantages of good water solubility, no toxicity and low cost of polyvinyl alcohol, but also crosslinks a large amount of hydroxyl groups in the polyvinyl alcohol with dextrin, so that the problems of large hydrophilicity and poor water resistance of a large amount of hydroxyl groups contained in the polyvinyl alcohol are solved; according to the silane modified hydroxypropyl methyl cellulose component in the self-made adhesive, methyl trimethoxy silane is firstly adopted for hydrolysis and crosslinking to form a net structure, and then hydroxypropyl methyl cellulose is dispersed in the net structure to play a supporting and connecting role, and the hydroxypropyl methyl cellulose also has viscosity, so that a good bonding effect can be achieved after water is added into a plastering material.
The self-made adhesive is in a granular state and can be uniformly mixed with other components, so that the self-made adhesive is convenient to transport and store on a building, the performance of the self-made adhesive can be shown after water is added in the self-made adhesive during use, and the adhesive strength and the adhesive effect of building plastering materials can be effectively improved.
Detailed Description
The invention is further described with reference to specific examples.
Example 1
A yellow river mud mortar building plastering dry material is composed of the following raw materials: 65kg of yellow river sand, 20kg of cement, 8kg of fly ash, 3kg of gypsum and 5kg of self-made adhesive;
the self-made adhesive is obtained according to the following steps:
firstly, adding 10kg of polyvinyl alcohol into 60kg of water for dissolving, adding 0.1kg of 30% hydrogen peroxide solution, stirring for reacting for half an hour, adding 10kg of dextrin water slurry, continuously stirring for reacting for half an hour, and performing spray drying to obtain dextrin modified polyvinyl alcohol particles; wherein the dextrin water slurry is prepared from dextrin and water according to the mass ratio of 1: 3, uniformly mixing the components in a ratio;
adding 1kg of methyltrimethoxysilane into 10kg of water, stirring to obtain a solution, regulating the pH to 2 by using hydrochloric acid, heating to 40 ℃, hydrolyzing for 10 hours to obtain a cross-linked solution, adding 2kg of hydroxypropyl methyl cellulose into the cross-linked solution, stirring and uniformly mixing, and performing spray drying to obtain silane modified hydroxypropyl methyl cellulose;
and thirdly, uniformly mixing 10kg of dextrin modified polyvinyl alcohol particles obtained in the step I and 1kg of silane modified hydroxypropyl methyl cellulose obtained in the step II to obtain the self-made adhesive.
The yellow river mud mortar dry building plastering material is prepared by uniformly mixing 65kg of yellow river sand, 20kg of cement, 8kg of fly ash, 3kg of gypsum and 5kg of self-made adhesive.
Example 2
A yellow river mud mortar building plastering dry material comprises the following raw materials in parts by weight: 80kg of yellow river sand, 25kg of cement, 12kg of fly ash, 8kg of gypsum and 15kg of self-made adhesive;
the self-made adhesive is obtained according to the following steps:
firstly, adding 15kg of polyvinyl alcohol into 120kg of water for dissolving, adding 0.75kg of 30% hydrogen peroxide solution, stirring for reacting for half an hour, adding 30kg of dextrin water slurry, continuously stirring for reacting for half an hour, and performing spray drying to obtain dextrin modified polyvinyl alcohol particles; wherein the dextrin water slurry is prepared from dextrin and water according to the mass ratio of 1: 4, uniformly mixing the components in a ratio of;
adding 1kg of methyltrimethoxysilane into 15kg of water, stirring to obtain a solution, regulating the pH value to 3 by using hydrochloric acid, heating to 50 ℃, hydrolyzing for 15 hours to obtain a cross-linked solution, adding 5kg of hydroxypropyl methyl cellulose into the cross-linked solution, stirring uniformly, and performing spray drying to obtain silane modified hydroxypropyl methyl cellulose;
and thirdly, uniformly mixing 15kg of dextrin modified polyvinyl alcohol particles obtained in the step I and 1kg of silane modified hydroxypropyl methyl cellulose obtained in the step II to obtain the self-made adhesive.
80kg of yellow river sand, 25kg of cement, 12kg of fly ash, 8kg of gypsum and 15kg of self-made adhesive are uniformly mixed to obtain the yellow river mud mortar dry building plastering material.
Example 3
A yellow river mud mortar building plastering dry material is composed of the following raw materials: 68kg of yellow river sand, 24kg of cement, 9kg of fly ash, 4kg of gypsum and 8kg of self-made adhesive;
the self-made adhesive is obtained according to the following steps:
adding 20kg of polyvinyl alcohol into 130kg of water for dissolving, adding 0.4kg of 30% hydrogen peroxide solution, stirring for reacting for half an hour, adding 30kg of dextrin water slurry, continuously stirring for reacting for half an hour, and performing spray drying to obtain dextrin-modified polyvinyl alcohol particles; wherein the dextrin water slurry is prepared from dextrin and water according to the mass ratio of 1: 3.5 are evenly mixed according to the proportion;
adding 1kg of methyltrimethoxysilane into 14kg of water, stirring to obtain a solution, regulating the pH to 2.5 by using hydrochloric acid, heating to 46 ℃, hydrolyzing for 12 hours to obtain a cross-linked solution, adding 4kg of hydroxypropyl methyl cellulose, stirring uniformly, and spray drying to obtain silane modified hydroxypropyl methyl cellulose;
and thirdly, uniformly mixing 14kg of dextrin modified polyvinyl alcohol particles obtained in the step I and 1kg of silane modified hydroxypropyl methyl cellulose obtained in the step II to obtain the self-made adhesive.
68kg of yellow river sand, 24kg of cement, 9kg of fly ash, 4kg of gypsum and 8kg of self-made adhesive are uniformly mixed to obtain the yellow river mud mortar dry building plastering material.
Example 4
A yellow river mud mortar building plastering dry material is composed of the following raw materials: 70kg of yellow river sand, 24kg of cement, 10kg of fly ash, 5kg of gypsum and 10kg of self-made adhesive;
the self-made adhesive is obtained according to the following steps:
firstly, adding 15kg of polyvinyl alcohol into 105kg of water for dissolving, adding 0.6kg of 30% hydrogen peroxide solution, stirring for oxidation reaction for half an hour, adding 30kg of dextrin water slurry, continuously stirring for reaction for half an hour, and performing spray drying to obtain dextrin modified polyvinyl alcohol particles; wherein the dextrin water slurry is prepared from dextrin and water according to the mass ratio of 1: 4, uniformly mixing the components in a ratio of;
adding 1kg of methyltrimethoxysilane into 12kg of water, stirring to obtain a solution, regulating the pH to 2 by using hydrochloric acid, heating to 45 ℃, hydrolyzing for 12 hours to obtain a cross-linked solution, adding 4kg of hydroxypropyl methyl cellulose into the cross-linked solution, stirring and uniformly mixing, and performing spray drying to obtain silane modified hydroxypropyl methyl cellulose;
and thirdly, uniformly mixing 12kg of dextrin modified polyvinyl alcohol particles obtained in the step I and 1kg of silane modified hydroxypropyl methyl cellulose obtained in the step II to obtain the self-made adhesive.
70kg of yellow river sand, 24kg of cement, 10kg of fly ash, 5kg of gypsum and 10kg of self-made adhesive are uniformly mixed to obtain the yellow river mud mortar dry building plastering material.
And (3) adding water into the yellow river mud mortar building plastering dry material obtained in the embodiment 1-4, uniformly mixing to obtain plastering mortar, and directly carrying out mechanical spraying construction or plastering construction on the plastering mortar on a building wall, wherein the mortar has no crack and no hollowing. The yellow river mud mortar building plastering dry material of the embodiments 1-4 is detected according to the building mortar basic performance test method standard JGJ/T70-2009, and the performance is shown in Table 1.
TABLE 1 Main Properties of the yellow river mud mortar construction plastering dry material of examples 1-4
The yellow river mud mortar building plastering dry material has the advantages of low water consumption, high water retention rate, moderate consistency, no layering, high tensile bonding strength, high compressive strength, low shrinkage, freezing resistance and impermeability.
Claims (1)
1. The yellow river mud mortar building plastering dry material is characterized by comprising the following components in parts by weight: the composite material comprises the following raw materials in parts by weight: 70 parts of yellow river sand, 24 parts of cement, 10 parts of fly ash, 5 parts of gypsum and 10 parts of self-made adhesive;
the yellow river mud mortar building plastering dry material is obtained according to the following steps:
firstly, adding polyvinyl alcohol into water with the weight 7 times of that of the polyvinyl alcohol for dissolving, adding 30% hydrogen peroxide solution, stirring for oxidation reaction for half an hour, adding dextrin water slurry, continuously stirring for reaction for half an hour, and performing spray drying to obtain dextrin modified polyvinyl alcohol particles; wherein the dextrin water slurry is prepared from dextrin and water according to the mass ratio of 1: 4, uniformly mixing the components in a ratio of; the mass ratio of the polyvinyl alcohol to the 30% hydrogen peroxide solution to the dextrin water slurry is 1: 0.04: 2;
adding methyltrimethoxysilane into water with the weight being 12 times of that of the mixture, stirring to obtain a solution, regulating the pH value to 2 by using hydrochloric acid, heating to 45 ℃, hydrolyzing for 12 hours to obtain a cross-linked solution, adding hydroxypropyl methyl cellulose into the cross-linked solution, stirring and mixing uniformly, and performing spray drying to obtain silane modified hydroxypropyl methyl cellulose; wherein the mass ratio of the methyltrimethoxysilane to the hydroxypropyl methylcellulose is 1: 4;
thirdly, mixing the dextrin modified polyvinyl alcohol particles obtained in the step I and the silane modified hydroxypropyl methyl cellulose obtained in the step II according to the mass ratio of 12: 1 to obtain a white adhesive;
fourthly, uniformly mixing 70 parts of yellow river sand, 24 parts of cement, 10 parts of fly ash, 5 parts of gypsum and 10 parts of the self-made adhesive obtained in the third step to obtain a yellow river mud mortar building plastering dry material;
the yellow river mud mortar building plastering dry material has 14d tensile bonding strength of 0.44MPa and 28d compressive strength of 8.9 MPa.
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| CN111548102B (en) * | 2020-06-29 | 2022-03-18 | 郑州大学 | Mortar and preparation method and application thereof |
| CN112321227B (en) * | 2020-10-23 | 2022-02-22 | 华北水利水电大学 | Yellow river sand ultrahigh-performance concrete and preparation method thereof |
| CN114085051A (en) * | 2021-12-04 | 2022-02-25 | 山东旺峰新型建材有限公司 | Dry powder for anti-crack plastering mortar of external wall |
| CN113998957A (en) * | 2021-12-04 | 2022-02-01 | 山东旺峰新型建材有限公司 | Novel interior wall heat-insulating adhesive dry powder and preparation method thereof |
| CN114149212A (en) * | 2021-12-04 | 2022-03-08 | 山东旺峰新型建材有限公司 | Novel sculpture mortar dry powder and preparation method thereof |
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| WO2005105700A1 (en) * | 2004-04-27 | 2005-11-10 | Hercules Incorporated | Cement-based systems using plastification/extrusion auxiliaries prepared from raw cotton linters |
| CN101948269A (en) * | 2010-09-26 | 2011-01-19 | 冯守中 | Silt adhesive and preparation method thereof |
| CN102557531A (en) * | 2010-12-11 | 2012-07-11 | 鞍钢房地产开发集团有限公司 | Dry-mixed surface mortar for external insulation of building exterior wall and preparation method thereof |
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2017
- 2017-11-09 CN CN201711095089.4A patent/CN108033714B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005105700A1 (en) * | 2004-04-27 | 2005-11-10 | Hercules Incorporated | Cement-based systems using plastification/extrusion auxiliaries prepared from raw cotton linters |
| CN101948269A (en) * | 2010-09-26 | 2011-01-19 | 冯守中 | Silt adhesive and preparation method thereof |
| CN102557531A (en) * | 2010-12-11 | 2012-07-11 | 鞍钢房地产开发集团有限公司 | Dry-mixed surface mortar for external insulation of building exterior wall and preparation method thereof |
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