CN114702260A - Retarder for light gypsum and preparation method thereof - Google Patents
Retarder for light gypsum and preparation method thereof Download PDFInfo
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- CN114702260A CN114702260A CN202210359651.4A CN202210359651A CN114702260A CN 114702260 A CN114702260 A CN 114702260A CN 202210359651 A CN202210359651 A CN 202210359651A CN 114702260 A CN114702260 A CN 114702260A
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- 239000010440 gypsum Substances 0.000 title claims abstract description 57
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 27
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 229940098465 tincture Drugs 0.000 claims abstract description 15
- 150000001413 amino acids Chemical class 0.000 claims abstract description 12
- 150000007524 organic acids Chemical class 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002253 acid Substances 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 239000007809 chemical reaction catalyst Substances 0.000 claims abstract description 8
- 150000002148 esters Chemical class 0.000 claims abstract description 8
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 8
- 235000004252 protein component Nutrition 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 230000001105 regulatory effect Effects 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims abstract description 5
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 235000018102 proteins Nutrition 0.000 claims description 9
- 108090000623 proteins and genes Proteins 0.000 claims description 9
- 102000004169 proteins and genes Human genes 0.000 claims description 9
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-Diisopropylethylamine (DIPEA) Chemical group CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 claims description 8
- MDHYEMXUFSJLGV-UHFFFAOYSA-N phenethyl acetate Chemical group CC(=O)OCCC1=CC=CC=C1 MDHYEMXUFSJLGV-UHFFFAOYSA-N 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 4
- 108010010803 Gelatin Proteins 0.000 claims description 3
- 239000004472 Lysine Substances 0.000 claims description 3
- KDXKERNSBIXSRK-UHFFFAOYSA-N Lysine Natural products NCCCCC(N)C(O)=O KDXKERNSBIXSRK-UHFFFAOYSA-N 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims description 3
- 235000007164 Oryza sativa Nutrition 0.000 claims description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 3
- AYFVYJQAPQTCCC-UHFFFAOYSA-N Threonine Natural products CC(O)C(N)C(O)=O AYFVYJQAPQTCCC-UHFFFAOYSA-N 0.000 claims description 3
- 239000004473 Threonine Substances 0.000 claims description 3
- 229920000159 gelatin Polymers 0.000 claims description 3
- 239000008273 gelatin Substances 0.000 claims description 3
- 235000019322 gelatine Nutrition 0.000 claims description 3
- 235000011852 gelatine desserts Nutrition 0.000 claims description 3
- 229960003646 lysine Drugs 0.000 claims description 3
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 3
- 239000011976 maleic acid Substances 0.000 claims description 3
- 235000009566 rice Nutrition 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 3
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 2
- 108010076876 Keratins Proteins 0.000 claims description 2
- 102000011782 Keratins Human genes 0.000 claims description 2
- KDXKERNSBIXSRK-YFKPBYRVSA-N L-lysine Chemical compound NCCCC[C@H](N)C(O)=O KDXKERNSBIXSRK-YFKPBYRVSA-N 0.000 claims description 2
- BVHLGVCQOALMSV-JEDNCBNOSA-N L-lysine hydrochloride Chemical compound Cl.NCCCC[C@H](N)C(O)=O BVHLGVCQOALMSV-JEDNCBNOSA-N 0.000 claims description 2
- AYFVYJQAPQTCCC-GBXIJSLDSA-N L-threonine Chemical compound C[C@@H](O)[C@H](N)C(O)=O AYFVYJQAPQTCCC-GBXIJSLDSA-N 0.000 claims description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 2
- 235000019764 Soybean Meal Nutrition 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims description 2
- QUMXDOLUJCHOAY-UHFFFAOYSA-N alpha-methylbenzyl acetate Natural products CC(=O)OC(C)C1=CC=CC=C1 QUMXDOLUJCHOAY-UHFFFAOYSA-N 0.000 claims description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 2
- 239000000920 calcium hydroxide Substances 0.000 claims description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 2
- 230000007062 hydrolysis Effects 0.000 claims description 2
- 229960005337 lysine hydrochloride Drugs 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 239000003002 pH adjusting agent Substances 0.000 claims description 2
- 239000004455 soybean meal Substances 0.000 claims description 2
- 229960002898 threonine Drugs 0.000 claims description 2
- 229920002494 Zein Polymers 0.000 claims 1
- 239000005019 zein Substances 0.000 claims 1
- 229940093612 zein Drugs 0.000 claims 1
- 238000005187 foaming Methods 0.000 abstract description 8
- 230000000979 retarding effect Effects 0.000 abstract description 7
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 206010003549 asthenia Diseases 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- AVTYONGGKAJVTE-OLXYHTOASA-L potassium L-tartrate Chemical compound [K+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O AVTYONGGKAJVTE-OLXYHTOASA-L 0.000 description 1
- 239000001472 potassium tartrate Substances 0.000 description 1
- 229940111695 potassium tartrate Drugs 0.000 description 1
- 235000011005 potassium tartrates Nutrition 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000017854 proteolysis Effects 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
- 235000011083 sodium citrates Nutrition 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- 235000019830 sodium polyphosphate Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
Classifications
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/20—Retarders
- C04B2103/22—Set retarders
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a retarder for light gypsum and a preparation method thereof, wherein the retarder for light gypsum comprises the following raw materials in parts by weight: 300-350 parts of protein component raw material, 50-150 parts of pure amino acid raw material, 10-30 parts of pH value regulator, 20-60 parts of organic acid, acid tincture or ester raw material, 0.1-0.5 part of odor regulator, 2-8 parts of reaction catalyst and 350-650 parts of water by weight, dissolving the protein component raw material in water, adding part of the pH value regulator, performing hydrolysis reaction, sequentially adding the pure amino acid raw material, the organic acid, the acid tincture or ester raw material and the reaction catalyst, regulating the pH value to 7-8, heating for reaction to obtain a mixture, adding the odor regulator, cooling and uniformly stirring to obtain the retarder for the light gypsum. Through the mode, the retarder for the light gypsum and the preparation method thereof have the advantages of good retarding effect and small strength loss, reduce the influence on the foaming efficiency of the foaming gypsum and facilitate the adjustment of the gypsum setting time.
Description
Technical Field
The invention relates to the field of retarders, in particular to a retarder for light gypsum and a preparation method thereof.
Background
Gypsum has an irreplaceable effect as one of the main building cementitious materials. The gypsum hardened body has good heat insulation performance and sound absorption performance, slightly expands volume when hardened, can ensure that the surface of the hardened body is smooth, does not crack when dried, has good decoration and good processability, and has low production energy consumption.
In practical application, the gypsum material is mixed with water and then is coagulated for a short time, and the fluidity of the gypsum material can be lost within a few minutes, so that the gypsum material cannot meet the requirements of normal construction. Set retarders are often added to gypsum systems to adjust the setting time so that the gypsum slurry remains plastic for a longer period of time.
Different gypsum retarders have great influence on the performance of gypsum, and the conventional retarders mainly comprise three types: organic acid and its soluble salt, alkaline phosphate and protein retarder. Wherein, the retarder of organic acid and soluble salts thereof mainly comprises citric acid, sodium citrate, tartaric acid, potassium tartrate and the like; the phosphate retarder mainly comprises sodium hexametaphosphate, sodium polyphosphate and the like; protein retarders have been studied because of their low doping levels, high retarding efficiency, and low impact on strength.
With the increasing development of gypsum building materials, the weight of gypsum is also rapidly developed. The current approaches for lightening gypsum include the following two approaches:
1. after the foaming agent and the water are stirred and foamed, introducing air bubbles into the gypsum slurry;
2. adding lightweight aggregate (such as vitrified micro bubbles, porcelain granules, etc.).
Along with the lightening of gypsum, higher requirements are also put forward on the gypsum retarder:
1. the retarding efficiency is high, and the requirement of the construction performance can be met under a lower mixing amount;
2. the influence on the strength is small, and the strength of the lightweight gypsum is lower, so that the influence on the strength of the retarder is small when the retarder is required to be kept for a certain setting time;
3. when the foaming agent is used for lightening the gypsum, the retarder has no obvious influence on the foaming efficiency of the foaming gypsum.
The existing retarder for gypsum can not meet the above 3 requirements at the same time, so that the development of light gypsum is influenced, and improvement is needed.
Disclosure of Invention
The invention mainly solves the technical problem of providing the retarder for the light gypsum and the preparation method thereof, overcomes the defects of the retarder in aspects of retarding effect, retarding time adjustment, strength loss and the like of the light gypsum, improves the retarding effect and reduces the strength loss of the gypsum.
In order to solve the technical problems, the invention adopts a technical scheme that: the retarder for the light gypsum comprises the following raw materials in parts by weight:
300-350 parts of protein component raw material
50-150 parts by weight of pure amino acid raw material
10-30 parts of pH value regulator
20-60 parts by weight of organic acid, acid tincture or ester raw material
0.1 to 0.5 part by weight of an odor regulator
2-8 parts of reaction catalyst
350-650 parts of water.
In a preferred embodiment of the present invention, the protein component raw material is one or more of animal keratin, industrial gelatin, soybean meal protein, rice protein, corn protein and mycoprotein.
In a preferred embodiment of the present invention, the pure amino acid raw material is a mixture of one or more of lysine, lysine hydrochloride or threonine.
In a preferred embodiment of the present invention, the pH adjuster is a base.
In a preferred embodiment of the invention, the alkali substance is one or a mixture of calcium hydroxide, sodium hydroxide and potassium hydroxide.
In a preferred embodiment of the present invention, diisopropylethylamine is used as the reaction catalyst, and phenylethyl acetate is used as the odor regulator.
In a preferred embodiment of the present invention, the organic acid, acid tincture or ester raw material comprises one or more of ethylenediaminetetraacetic acid, methacrylic acid, acrylic acid, methacrylic acid tincture, acrylic acid tincture, maleic acid tincture, methyl methacrylate or methyl acrylate.
In order to solve the technical problems, the invention adopts a technical scheme that: the preparation method of the retarder for the light gypsum comprises the following steps:
s1, dissolving 300-350 parts by weight of protein component raw materials in 350-650 parts by weight of water, adding 10-20 parts by weight of pH value regulator, and carrying out hydrolysis reaction;
s2, sequentially adding 50-150 parts by weight of pure amino acid raw material, 20-60 parts by weight of organic acid, acid tincture or ester raw material and 2-8 parts by weight of reaction catalyst, detecting the pH value, adding a proper amount of pH value regulator according to the pH value detection value, regulating the pH value to 7-8, and heating for reaction to obtain a mixture;
and S3, adding 0.1-0.5 part by weight of odor regulator into the mixture, cooling and uniformly stirring to obtain the retarder for the light gypsum.
In a preferred embodiment of the present invention, in the step S1, the temperature is maintained at 30-80 ℃ for 2-4 hours for hydrolysis; and in the step S2, preserving heat for 3-6 hours at the temperature of 30-90 ℃ to obtain a mixture.
In a preferred embodiment of the present invention, the pH adjustor is added dropwise in the step of S2.
The invention has the beneficial effects that: according to the retarder for the light gypsum and the preparation method thereof, protein materials are chemically synthesized, the raw materials are widely available, and compared with retarders of other inorganic salts and organic acids, the retarder has the advantages of long setting time and low strength loss, the phenomenon of mutation is avoided due to the change of the mixing amount, the setting time of the gypsum is conveniently adjusted, the influence on the foaming efficiency of the foaming gypsum is small, and the retarding effect is good.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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 embodiment of the invention comprises the following steps:
example 1:
a preparation method of a retarder for light gypsum comprises the following steps:
s1, dissolving 300 parts by weight of industrial gelatin in 500 parts by weight of water, adding 10 parts by weight of sodium hydroxide, preserving the heat for 4 hours at 30 ℃, carrying out hydrolysis reaction, and carrying out hydrolysis reaction in an alkaline environment to generate amino acid;
s2, sequentially adding 120 parts by weight of threonine (a mixture is formed by a pure amino acid raw material and amino acid generated by a proteolysis reaction), 60 parts by weight of methacrylic acid (various amides are generated by reaction and dehydration with the amino acid) and 8 parts by weight of diisopropylethylamine, carrying out reaction catalysis, detecting the pH value, adding a proper amount of pH value regulator drop by drop according to the pH value detection value, regulating the pH value to 8.0, enabling the pH value to be alkaline, carrying out heating reaction, and carrying out heat preservation at 60 ℃ for 4 hours to obtain a mixture;
and S3, adding 0.5 part by weight of phenethyl acetate into the mixture, adjusting the smell, cooling and uniformly stirring to obtain the retarder for the light gypsum.
Example 2:
a preparation method of a retarder for light gypsum comprises the following steps:
s1, dissolving 350 parts by weight of rice protein in 450 parts by weight of water, adding 15 parts by weight of potassium hydroxide, and preserving heat at 80 ℃ for 2 hours to carry out hydrolysis reaction;
s2, sequentially adding 120 parts by weight of lysine, 60 parts by weight of maleic acid tincture and 2 parts by weight of diisopropylethylamine, detecting the pH value, adding a proper amount of pH value regulator dropwise according to the pH value detection value, regulating the pH value to 7.6, heating for reaction, and keeping the temperature at 90 ℃ for 3 hours to obtain a mixture;
and S3, adding 0.1 part by weight of phenethyl acetate into the mixture, cooling and uniformly stirring to obtain the retarder for the light gypsum.
In conclusion, the retarder for light gypsum and the preparation method thereof have the advantages of long setting time and small strength loss from two macroscopic indexes of setting time and strength loss, have small influence on the foaming efficiency of the foaming gypsum, and are beneficial to adjusting the setting time of the gypsum.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The retarder for the light gypsum is characterized by comprising the following raw materials in parts by weight:
300-350 parts by weight of protein component raw material
50-150 parts by weight of pure amino acid raw material
10-30 parts of pH value regulator
20-60 parts by weight of organic acid, acid tincture or ester raw material
0.1 to 0.5 part by weight of an odor regulator
2-8 parts of reaction catalyst
350-650 parts of water.
2. The retarder for light weight gypsum according to claim 1, wherein the protein component is one or more of animal keratin, industrial gelatin, soybean meal protein, rice protein, zein and mycoprotein.
3. The retarder for light weight gypsum according to claim 1, wherein the pure amino acid material is a mixture of one or more of lysine, lysine hydrochloride, or threonine.
4. The retarder for light weight gypsum according to claim 1, wherein the pH adjuster is an alkaline substance.
5. The retarder for light weight gypsum according to claim 4, wherein the alkali substance is one or more of calcium hydroxide, sodium hydroxide and potassium hydroxide.
6. The retarder for light gypsum according to claim 1, wherein the reaction catalyst is diisopropylethylamine, and the odor regulator is phenylethyl acetate.
7. The retarder for light gypsum according to claim 1, wherein the organic acid, acid tincture or ester raw material comprises one or more of ethylenediamine tetraacetic acid, methacrylic acid, acrylic acid, methacrylic acid tincture, acrylic acid tincture, maleic acid tincture, methyl methacrylate or methyl acrylate.
8. A preparation method of the retarder for light gypsum, which is used for producing the retarder for light gypsum according to any one of claims 1 to 7, is characterized by comprising the following steps:
s1, dissolving 300-350 parts by weight of protein component raw materials in 350-650 parts by weight of water, adding 10-20 parts by weight of pH value regulator, and carrying out hydrolysis reaction;
s2, sequentially adding 50-150 parts by weight of pure amino acid raw material, 20-60 parts by weight of organic acid, acid tincture or ester raw material and 2-8 parts by weight of reaction catalyst, detecting the pH value, adding a proper amount of pH value regulator according to the pH value detection value, regulating the pH value to 7-8, and heating for reaction to obtain a mixture;
and S3, adding 0.1-0.5 part by weight of odor regulator into the mixture, cooling and uniformly stirring to obtain the retarder for the light gypsum.
9. The preparation method of the retarder for light gypsum according to claim 8, wherein in the step S1, the temperature is kept at 30-80 ℃ for 2-4 h for hydrolysis; and in the step S2, preserving heat for 3-6 hours at the temperature of 30-90 ℃ to obtain a mixture.
10. The method of preparing a retarder for light gypsum according to claim 8, wherein the pH adjustor is added dropwise in the step of S2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210359651.4A CN114702260A (en) | 2022-04-07 | 2022-04-07 | Retarder for light gypsum and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210359651.4A CN114702260A (en) | 2022-04-07 | 2022-04-07 | Retarder for light gypsum and preparation method thereof |
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| CN202210359651.4A Pending CN114702260A (en) | 2022-04-07 | 2022-04-07 | Retarder for light gypsum and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117567066A (en) * | 2024-01-16 | 2024-02-20 | 申辉(河北)精化有限责任公司 | Modified protein polypeptide-based gypsum retarder and preparation method thereof |
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|---|---|---|---|---|
| US20110056409A1 (en) * | 2008-04-10 | 2011-03-10 | Sika Technology Ag | Setting retarder for hydraulically setting compositions |
| CN104773971A (en) * | 2015-04-08 | 2015-07-15 | 苏州市兴邦化学建材有限公司 | Calcium sulfate retarder and preparation method thereof |
| CN109231867A (en) * | 2018-08-29 | 2019-01-18 | 宁波金泽新型建材有限公司 | A kind of efficient compound calcium sulphate retarder and preparation method thereof |
| CN114180877A (en) * | 2022-02-17 | 2022-03-15 | 河北科技大学 | Alkali-resistant gypsum retarder and preparation method thereof |
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- 2022-04-07 CN CN202210359651.4A patent/CN114702260A/en active Pending
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| US20110056409A1 (en) * | 2008-04-10 | 2011-03-10 | Sika Technology Ag | Setting retarder for hydraulically setting compositions |
| CN104773971A (en) * | 2015-04-08 | 2015-07-15 | 苏州市兴邦化学建材有限公司 | Calcium sulfate retarder and preparation method thereof |
| CN109231867A (en) * | 2018-08-29 | 2019-01-18 | 宁波金泽新型建材有限公司 | A kind of efficient compound calcium sulphate retarder and preparation method thereof |
| CN114180877A (en) * | 2022-02-17 | 2022-03-15 | 河北科技大学 | Alkali-resistant gypsum retarder and preparation method thereof |
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| CN117567066A (en) * | 2024-01-16 | 2024-02-20 | 申辉(河北)精化有限责任公司 | Modified protein polypeptide-based gypsum retarder and preparation method thereof |
| CN117567066B (en) * | 2024-01-16 | 2024-03-22 | 申辉(河北)精化有限责任公司 | Modified protein polypeptide-based gypsum retarder and preparation method thereof |
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