CN112723907A - Formula and production method of high-tensile-strength plastering gypsum - Google Patents

Formula and production method of high-tensile-strength plastering gypsum Download PDF

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Publication number
CN112723907A
CN112723907A CN202110132930.2A CN202110132930A CN112723907A CN 112723907 A CN112723907 A CN 112723907A CN 202110132930 A CN202110132930 A CN 202110132930A CN 112723907 A CN112723907 A CN 112723907A
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China
Prior art keywords
parts
plastering gypsum
gypsum
tensile strength
tackifier
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Pending
Application number
CN202110132930.2A
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Chinese (zh)
Inventor
曾德清
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Guizhou Zhongya High Tech Paint Co ltd
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Guizhou Zhongya High Tech Paint Co ltd
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Priority to CN202110132930.2A priority Critical patent/CN112723907A/en
Publication of CN112723907A publication Critical patent/CN112723907A/en
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14Compositions 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 calcium sulfate cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482Coating or impregnation materials
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/40Porous or lightweight materials

Abstract

The invention provides a formula and a production method of high-tensile-strength plastering gypsum, and relates to the technical field of building materials. The high-tensile-strength plastering gypsum comprises the following raw materials in parts by weight: 50-60 parts of gypsum powder, 30-35 parts of purified water, 2-3 parts of a tackifier, 10-13 parts of heavy calcium carbonate, 10-13 parts of slurried asbestos wool, 3-6 parts of vitrified micro-beads, 10-20 parts of clay powder, 20-25 parts of light aggregate, 30-35 parts of polyacrylic acid resin, 5-15 parts of nano ceramic hollow micro-beads and 2-6 parts of polyacrylamide. The mortar has the advantages that the mortar is added with the formed asbestos wool and the vitrified micro bubbles, so that the tensile strength and the heat insulation performance of the plastering gypsum can be improved, the easy flowability and the self-resistance strength of the mortar are improved through the vitrified micro bubbles, the cohesiveness among materials is improved by the tackifier and the clay powder, the polyacrylamide has high cohesiveness and good durability, the bonding performance and the stability of the plastering gypsum are improved, and the mortar is worthy of great popularization.

Description

Formula and production method of high-tensile-strength plastering gypsum
Technical Field
The invention relates to the technical field of building materials, in particular to a formula and a production method of high-tensile-strength plastering gypsum.
Background
Along with the rapid development of market economy in China and the improvement of the quality level of life of people, people have higher and higher expectations for building decoration quality, in the construction of interior walls, the traditional cement mortar and mixed mortar have poor water retention during hydration and drying, large shrinkage rate, easy defects of hollowing, cracking, falling and the like of wall surfaces, slow setting and hardening, long decoration period and the like, are easy to occur when the construction is not standard, the on-site repair rate is higher, and the requirements of indoor plastering quality and construction period are more and more not met. The plastering gypsum is a novel plastering material, has the advantages of firm bonding with a base layer, no hollowing, no falling, micro-expansion in hydration, no cracking, convenient construction, early strength, quick hardening, fire resistance, heat preservation, sound insulation, self-regulation of indoor temperature, environmental protection and the like, and has high popularization and application values.
However, the plastering gypsum on the market at present has poor tensile strength and high setting rate, so that the plastering gypsum is not dominant in construction, has poor adhesion, sometimes generates powder falling, and even has too low adhesion to be used as a coating architectural decorative paint.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a formula and a production method of high-tensile-strength plastering gypsum, and solves the problems of poor tensile strength and poor adhesion of the plastering gypsum.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the formula of the high-tensile-strength plastering gypsum comprises the following raw materials in parts by weight: 50-60 parts of gypsum powder, 30-35 parts of purified water, 2-3 parts of a tackifier, 10-13 parts of washed sand, 10-13 parts of heavy calcium carbonate, 10-13 parts of slurried asbestos wool, 3-6 parts of vitrified micro-beads, 10-20 parts of clay powder, 20-25 parts of light aggregate, 30-35 parts of polyacrylic acid resin, 5-15 parts of nano ceramic hollow micro-beads, 2-6 parts of polyacrylamide and 4-8 parts of a thickening agent.
Preferably, the tackifier is rosin tackifying emulsion, the clay powder is hydrous silicate product, the light aggregate is fly ash ceramsite and shale ceramsite ground into balls, and the retarder is composed of sodium pyrophosphate, sodium fluosilicate, lignosulfonate, hydroxycarboxylic acid and salts thereof, polyol and derivatives thereof, sugar and carbohydrate.
Preferably, the thickening agent is carboxymethyl cellulose or propylene glycol alginate, and the heavy calcium is 800-000 meshes of heavy calcium carbonate.
Preferably, the plastering gypsum can also comprise 5-10 parts of retarder, and the retarder is lignosulfonate.
Preferably, the production method of the high-tensile-strength plastering gypsum comprises the following steps:
s1, pretreatment
Firstly, grinding and crushing light aggregate and heavy calcium respectively by using a grinder, then filtering the light aggregate by using a 500-600 mesh screen and filtering the heavy calcium by using a 1000-1200 mesh screen;
s2, primary mixing
Putting purified water, gypsum powder and coarse whiting into a high-speed stirrer, stirring at a rotating speed of 1500-1800 r/min for 18-22 min, then putting the tackifier, washed sand, pulped asbestos wool and vitrified micro bubbles into the high-speed stirrer, and continuously stirring at a rotating speed of 3000-4000 r/min for 25-30 min;
s3, secondary mixing
Sequentially putting the thickening agent, the nano ceramic hollow microspheres, the polyacrylamide and the polyacrylic acid resin into a high-speed stirrer, mixing with the solution obtained after primary mixing, continuously stirring for 10-15 min at a rotating speed of 8000-1200 r/min, simultaneously heating the interior of the high-speed stirrer by using an electric heating wire, improving the activity of chemical molecules in the polyacrylamide, the polyacrylic acid resin and the nano ceramic hollow microspheres, and adding the retarder into the high-speed stirrer for stirring together when the external temperature is higher;
s4. packaging
And standing the solution after the secondary mixing for 10-15 min, removing supernatant, and filtering the mixed solution after removing the supernatant by using a 10-20-mesh screen, thereby obtaining the plastering gypsum with high tensile strength.
(III) advantageous effects
The invention provides a formula and a production method of high-tensile-strength plastering gypsum. The method has the following beneficial effects:
1. the plastering gypsum has the advantages that the heavy calcium, the slurried asbestos wool and the vitrified micro bubbles are added into the plastering gypsum, wherein the heavy calcium ensures that a gypsum solution is not settled and is easy to disperse, and the plastering gypsum has good glossiness, and the slurried asbestos wool has good tensile strength, good heat insulation performance and corrosion resistance, so that the tensile strength and the heat insulation performance of the plastering gypsum can be improved, the slurried asbestos wool is not easy to burn, the plastering gypsum has certain fireproof performance, the easy flowability and the self-resistance strength of mortar are improved through the vitrified micro bubbles, and the material shrinkage rate is reduced.
2. According to the invention, the tackifier, the clay powder, the polyacrylic acid resin and the polyacrylamide are added into the plastering gypsum, wherein the tackifier of the rosin tackifying emulsion material and the clay powder of the hydrous silicate product increase the cohesiveness among the materials, the polyacrylic acid resin has a relatively large molecular weight, good chemical resistance, high polyacrylamide cohesiveness and good durability, so that the adhesive property and stability of the plastering gypsum are improved, the plastering gypsum cannot change color after long-term use, and the phenomenon of powder falling after the plastering gypsum is solidified is avoided.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
the embodiment of the invention provides a formula of high-tensile-strength plastering gypsum, which comprises the following raw materials in parts by weight: 55 parts of gypsum powder, 35 parts of purified water, 2.5 parts of tackifier, 10 parts of washing sand, 10 parts of heavy calcium, 10 parts of slurried asbestos wool, 5 parts of vitrified micro bubbles, 15 parts of clay powder, 20 parts of light aggregate, 32 parts of polyacrylic acid resin, 10 parts of nano ceramic hollow micro bubbles, 5 parts of polyacrylamide and 5 parts of thickening agent.
The tackifier is rosin tackifying emulsion, the clay powder is a hydrous silicate product, the light aggregate is fly ash ceramsite and shale ceramsite ground into balls, the retarder consists of sodium pyrophosphate, sodium fluosilicate, lignosulfonate, hydroxycarboxylic acid and salts thereof, polyalcohol and derivatives thereof, sugar and carbohydrate, and the tackifier, clay powder, polyacrylic acid resin and polyacrylamide are added into the plastering gypsum, wherein the tackifier made of the rosin tackifying emulsion and the clay powder made of the hydrous silicate product increase the cohesiveness among the materials, the polyacrylic acid resin has a large relative molecular weight, good chemical resistance and high polyacrylamide cohesiveness and good durability, so that the adhesive property and stability of the plastering gypsum are improved, and the plastering gypsum cannot change color after long-term use.
The thickening agent is carboxymethyl cellulose or propylene glycol alginate, the coarse whiting is 800-mesh coarse whiting, the fluid characteristic of the plastering gypsum can be changed through the thickening agent, the viscosity is improved, and the sagging phenomenon is prevented.
The production method of the high-tensile-strength plastering gypsum comprises the following steps:
s1, pretreatment
Firstly, grinding and crushing light aggregate and heavy calcium respectively by using a grinder, then filtering the light aggregate by using a 500-mesh screen and filtering the heavy calcium by using a 1000-mesh screen;
s2, primary mixing
Putting purified water, gypsum powder and coarse whiting into a high-speed stirrer, stirring for 20min at the rotating speed of 1500r/min, then putting the tackifier, washed sand, pulped asbestos wool and vitrified micro bubbles into the high-speed stirrer, and continuously stirring for 30min at the rotating speed of 3500 r/min;
s3, secondary mixing
Sequentially putting the thickening agent, the nano ceramic hollow microspheres, the polyacrylamide and the polyacrylic acid resin into a high-speed stirrer, mixing the thickening agent, the nano ceramic hollow microspheres, the polyacrylamide and the polyacrylic acid resin with the solution after primary mixing, continuously stirring at the rotating speed of 1000r/min, and simultaneously heating the interior of the high-speed stirrer by using an electric heating wire to improve the activity of chemical molecules in the polyacrylamide, the polyacrylic acid resin and the nano ceramic hollow microspheres;
s4. packaging
And standing the solution after the secondary mixing for 10min, removing supernatant, and filtering the mixed solution after removing the supernatant by using a 10-mesh screen to obtain the plastering gypsum with high tensile strength.
Example two:
the embodiment of the invention provides a formula and a production method of high-tensile-strength plastering gypsum, which comprises the following raw materials in parts by weight: 50 parts of gypsum powder, 35 parts of purified water, 2.5 parts of tackifier, 13 parts of washing sand, 12 parts of heavy calcium, 12 parts of slurried asbestos wool, 5 parts of vitrified micro bubbles, 15 parts of clay powder, 25 parts of light aggregate, 35 parts of polyacrylic acid resin, 15 parts of nano ceramic hollow micro bubbles, 6 parts of polyacrylamide and 5 parts of thickener, wherein the heavy calcium, the slurried asbestos wool and the vitrified micro bubbles are added into the plastering gypsum, wherein the heavy calcium prevents a gypsum solution from settling and easily dispersing and has good glossiness, the slurried asbestos wool has good tensile strength and good heat insulation performance and corrosion resistance, so that the tensile strength and heat insulation performance of the plastering gypsum can be improved, the slurried asbestos wool is not easy to burn, the plastering gypsum has certain fireproof performance, the fluidity and self-resistance strength of the mortar are improved through the vitrified micro bubbles, and the material property shrinkage rate is reduced.
The tackifier is rosin tackifying emulsion, the clay powder is a hydrous silicate product, the light aggregate is fly ash ceramsite and shale ceramsite ground into balls, the retarder consists of sodium pyrophosphate, sodium fluosilicate, lignosulfonate, hydroxycarboxylic acid and salts thereof, polyalcohol and derivatives thereof, sugar and carbohydrate, and the tackifier, clay powder, polyacrylic acid resin and polyacrylamide are added into the plastering gypsum, wherein the tackifier made of the rosin tackifying emulsion and the clay powder made of the hydrous silicate product increase the cohesiveness among the materials, the polyacrylic acid resin has a large relative molecular weight, good chemical resistance and high polyacrylamide cohesiveness and good durability, so that the adhesive property and stability of the plastering gypsum are improved, and the plastering gypsum cannot change color after long-term use.
The thickening agent is carboxymethyl cellulose or propylene glycol algae protein acid ester, the coarse whiting is 1000-mesh coarse whiting, the fluid characteristic of the plastering gypsum can be changed through the thickening agent, the viscosity is improved, and the sagging phenomenon is prevented.
The plaster of plastering can also include 10 parts of retarder, the retarder is lignosulfonate, adds the retarder into high-speed mixer in the in-process that the secondary mixes, makes the retarder stir with the mixed solution in the high-speed mixer together, can prolong the rate of condensation of plaster of plastering through the retarder, can prevent when ambient temperature is higher that plaster of plastering from solidifying sooner, and is more convenient during the construction.
A production method of high-tensile-strength plastering gypsum comprises the following steps:
s1, pretreatment
Firstly, grinding and crushing light aggregate and heavy calcium respectively by using a grinder, then filtering the light aggregate by using a 500-mesh screen and filtering the heavy calcium by using a 1200-mesh screen;
s2, primary mixing
Putting purified water, gypsum powder and coarse whiting into a high-speed stirrer, stirring for 20min at the rotating speed of 1800r/min, then putting the tackifier, washed sand, pulped asbestos wool and vitrified micro bubbles into the high-speed stirrer, and continuously stirring for 25min at the rotating speed of 4000 r/min;
s3, secondary mixing
Sequentially putting the thickening agent, the nano ceramic hollow microspheres, the poly-acrylamide and the polyacrylic acid resin into a high-speed stirrer, mixing with the solution obtained after primary mixing, continuously stirring for 15min at the rotating speed of 1200r/min, and simultaneously heating the interior of the high-speed stirrer by using an electric heating wire to improve the activity of chemical molecules in the polyacrylamide, the polyacrylic acid resin and the nano ceramic hollow microspheres;
s4. packaging
And standing the solution after the secondary mixing for 15min, removing supernatant, and filtering the mixed solution after removing the supernatant by using a 12-mesh screen to obtain the plastering gypsum with high tensile strength.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The formula of the plastering gypsum with high tensile strength is characterized in that: the feed comprises the following raw materials in parts by weight: 50-60 parts of gypsum powder, 30-35 parts of purified water, 2-3 parts of a tackifier, 10-13 parts of washed sand, 10-13 parts of heavy calcium carbonate, 10-13 parts of slurried asbestos wool, 3-6 parts of vitrified micro-beads, 10-20 parts of clay powder, 20-25 parts of light aggregate, 30-35 parts of polyacrylic acid resin, 5-15 parts of nano ceramic hollow micro-beads, 2-6 parts of polyacrylamide and 4-8 parts of a thickening agent.
2. The formulation of high tensile strength plastering gypsum according to claim 1, wherein: the tackifier is rosin tackifying emulsion, the clay powder is hydrous silicate product, the light aggregate is fly ash ceramsite and shale ceramsite ground into balls, and the retarder is composed of sodium pyrophosphate, sodium fluosilicate, lignosulfonate, hydroxycarboxylic acid and salts thereof, polyalcohol and derivatives thereof, sugar and carbohydrate.
3. The formulation of high tensile strength plastering gypsum according to claim 1, wherein: the thickening agent is carboxymethyl cellulose or propylene glycol alginate, and the heavy calcium is 800-000 meshes of heavy calcium carbonate.
4. The formulation of high tensile strength plastering gypsum according to claim 1, wherein: the plastering gypsum can also comprise 5-10 parts of retarder, wherein the retarder is lignosulfonate.
5. The method for producing high tensile strength plastering gypsum according to claims 1 to 4, wherein: the method comprises the following steps:
s1, pretreatment
Firstly, grinding and crushing light aggregate and heavy calcium respectively by using a grinder, then filtering the light aggregate by using a 500-600 mesh screen and filtering the heavy calcium by using a 1000-1200 mesh screen;
s2, primary mixing
Putting purified water, gypsum powder and coarse whiting into a high-speed stirrer, stirring at a rotating speed of 1500-1800 r/min for 18-22 min, then putting the tackifier, washed sand, pulped asbestos wool and vitrified micro bubbles into the high-speed stirrer, and continuously stirring at a rotating speed of 3000-4000 r/min for 25-30 min;
s3, secondary mixing
Sequentially putting the thickening agent, the nano ceramic hollow microspheres, the polyacrylamide and the polyacrylic acid resin into a high-speed stirrer, mixing with the solution obtained after primary mixing, continuously stirring for 10-15 min at a rotating speed of 8000-1200 r/min, simultaneously heating the interior of the high-speed stirrer by using an electric heating wire, improving the activity of chemical molecules in the polyacrylamide, the polyacrylic acid resin and the nano ceramic hollow microspheres, and adding the retarder into the high-speed stirrer for stirring together when the external temperature is higher;
s4. packaging
And standing the solution after the secondary mixing for 10-15 min, removing supernatant, and filtering the mixed solution after removing the supernatant by using a 10-20-mesh screen, thereby obtaining the plastering gypsum with high tensile strength.
CN202110132930.2A 2021-02-01 2021-02-01 Formula and production method of high-tensile-strength plastering gypsum Pending CN112723907A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112850773A (en) * 2021-02-01 2021-05-28 贵州中亚高科涂料有限公司 High-efficiency production method of high-purity semi-water desulfurization paste
CN114685135A (en) * 2022-05-10 2022-07-01 江苏吉邦材料科技有限公司 Light gypsum mortar with high coating rate

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4664707A (en) * 1985-04-09 1987-05-12 Georgia-Pacific Corporation Fire resistant gypsum composition
CN107399953A (en) * 2017-08-22 2017-11-28 张升 A kind of building gelatine powder
CN108191369A (en) * 2018-02-07 2018-06-22 河北晨阳工贸集团有限公司 A kind of plastering gupsum and preparation method thereof
CN108275959A (en) * 2018-03-12 2018-07-13 太原理工大学 A kind of cracking resistance plastering gupsum of high tenacity enhanced water resistance

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4664707A (en) * 1985-04-09 1987-05-12 Georgia-Pacific Corporation Fire resistant gypsum composition
CN107399953A (en) * 2017-08-22 2017-11-28 张升 A kind of building gelatine powder
CN108191369A (en) * 2018-02-07 2018-06-22 河北晨阳工贸集团有限公司 A kind of plastering gupsum and preparation method thereof
CN108275959A (en) * 2018-03-12 2018-07-13 太原理工大学 A kind of cracking resistance plastering gupsum of high tenacity enhanced water resistance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112850773A (en) * 2021-02-01 2021-05-28 贵州中亚高科涂料有限公司 High-efficiency production method of high-purity semi-water desulfurization paste
CN114685135A (en) * 2022-05-10 2022-07-01 江苏吉邦材料科技有限公司 Light gypsum mortar with high coating rate

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