CN117303785B - PH universal type efficient gypsum retarder - Google Patents
PH universal type efficient gypsum retarder Download PDFInfo
- Publication number
- CN117303785B CN117303785B CN202311349946.4A CN202311349946A CN117303785B CN 117303785 B CN117303785 B CN 117303785B CN 202311349946 A CN202311349946 A CN 202311349946A CN 117303785 B CN117303785 B CN 117303785B
- Authority
- CN
- China
- Prior art keywords
- gypsum
- parts
- retarder
- surfactant
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000010440 gypsum Substances 0.000 title claims abstract description 176
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 176
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 132
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 82
- 239000004094 surface-active agent Substances 0.000 claims abstract description 59
- 239000002639 bone cement Substances 0.000 claims abstract description 45
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 44
- -1 amine compound Chemical class 0.000 claims abstract description 42
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 38
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 claims abstract description 33
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229920001732 Lignosulfonate Polymers 0.000 claims abstract description 19
- 239000011575 calcium Substances 0.000 claims abstract description 19
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 19
- 235000019357 lignosulphonate Nutrition 0.000 claims abstract description 19
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 claims abstract description 18
- 229920000053 polysorbate 80 Polymers 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 15
- 229920000877 Melamine resin Polymers 0.000 claims abstract description 14
- IVJISJACKSSFGE-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine Chemical group O=C.NC1=NC(N)=NC(N)=N1 IVJISJACKSSFGE-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims description 30
- 238000010276 construction Methods 0.000 claims description 23
- 238000002156 mixing Methods 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 12
- 238000001694 spray drying Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- 238000002360 preparation method Methods 0.000 abstract description 17
- 239000004471 Glycine Substances 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 13
- 239000002994 raw material Substances 0.000 abstract description 8
- 230000009467 reduction Effects 0.000 abstract description 6
- 238000002474 experimental method Methods 0.000 abstract description 5
- 239000000654 additive Substances 0.000 abstract description 2
- 239000003623 enhancer Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 16
- 239000000047 product Substances 0.000 description 11
- 230000000979 retarding effect Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 239000002131 composite material Substances 0.000 description 5
- 235000018102 proteins Nutrition 0.000 description 5
- 102000004169 proteins and genes Human genes 0.000 description 5
- 108090000623 proteins and genes Proteins 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical group [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-Diisopropylethylamine (DIPEA) Chemical compound CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- LPUQAYUQRXPFSQ-DFWYDOINSA-M monosodium L-glutamate Chemical compound [Na+].[O-]C(=O)[C@@H](N)CCC(O)=O LPUQAYUQRXPFSQ-DFWYDOINSA-M 0.000 description 2
- 235000013923 monosodium glutamate Nutrition 0.000 description 2
- 239000004223 monosodium glutamate Substances 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- MDHYEMXUFSJLGV-UHFFFAOYSA-N phenethyl acetate Chemical compound CC(=O)OCCC1=CC=CC=C1 MDHYEMXUFSJLGV-UHFFFAOYSA-N 0.000 description 2
- 235000021317 phosphate Nutrition 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 1
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- WHUUTDBJXJRKMK-UHFFFAOYSA-N Glutamic acid Natural products OC(=O)C(N)CCC(O)=O WHUUTDBJXJRKMK-UHFFFAOYSA-N 0.000 description 1
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 229920002494 Zein Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012496 blank sample Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- FNAQSUUGMSOBHW-UHFFFAOYSA-H calcium citrate Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O.[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O FNAQSUUGMSOBHW-UHFFFAOYSA-H 0.000 description 1
- 239000001354 calcium citrate Substances 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010668 complexation reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 235000013922 glutamic acid Nutrition 0.000 description 1
- 239000004220 glutamic acid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 235000021190 leftovers Nutrition 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 235000004252 protein component Nutrition 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007873 sieving Methods 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
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- 235000013337 tricalcium citrate Nutrition 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000005019 zein Substances 0.000 description 1
- 229940093612 zein Drugs 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 belongs to the technical field of gypsum additives, and particularly relates to a pH universal type efficient gypsum retarder and a preparation method thereof. The pH universal high-efficiency gypsum retarder provided by the invention comprises an amine compound, bone glue, an enhancer, citric acid, a water reducer, a surfactant and water. The amine compound is glycine, the reinforcing agent is gray calcium powder, the water reducing agent is sulfonated melamine formaldehyde resin, and the surfactant comprises tween-80 and sulfonated lignin. The pH universal high-efficiency gypsum retarder prepared by the invention has the advantages that the preparation method is simple, the raw materials are easy to obtain, and the citric acid, bone glue and amine compounds are used as main retarder components, meanwhile, different components play different roles, and the pH value influence is reduced, the application scene is increased, the strength reduction caused by the retarder effect is reduced, and the like. Experiments prove that the gypsum retarder prepared by the invention can control the strength loss rate to be about 8% under different acid-base conditions, and has good application prospect.
Description
Technical Field
The invention belongs to the technical field of gypsum additives, and particularly relates to a pH universal type efficient gypsum retarder.
Background
Gypsum materials are green and environmentally friendly building materials that are widely accepted worldwide and used in various countries. The gypsum material has wide application, such as gypsum ceilings, gypsum putty, special mortar, plastered gypsum, gypsum wallboard, mould gypsum, gypsum blocks and the like, and is prepared from building gypsum as a raw material. However, because the setting and hardening process of the gypsum material is faster, the gypsum material is generally set into blocks within about 6-8 minutes, and the fluidity is lost, so that the construction and operation time is far short, the setting time of the gypsum material can be adjusted by adding the retarder, and the repeated addition of the retarder is not needed, so that the requirements of the construction process are met.
As for gypsum retarders, there are currently roughly three types. The organic acid is represented by citric acid, malic acid and the like, is a gypsum retarder commonly used in the market, has obvious retarding effect on building gypsum, is a high-efficiency gypsum retarder, and has great influence on compressive strength of the building gypsum while having obvious retarding effect on the building gypsum; secondly, phosphates, represented by sodium tripolyphosphate, sodium hexametaphosphate and the like, the setting time of gypsum is prolonged to a certain extent, but the retarding effect is general and has larger influence on the strength; the protein retarder is a novel technical scheme in the field in recent years, has a better retarding effect, has little influence on strength, but has the problem of high process cost, and is a product obtained by hydrolyzing the leftovers containing protein components such as animal feathers, bean pulp, zein and the like, and the content of the protein retarder is not fixed, so that the practical application effect of the retarder is not ideal.
Chinese patent application CN106966631A discloses a method for preparing a composite gypsum retarder, which comprises the steps of sequentially carrying out anaerobic and aerobic culture on waste mushroom sticks, collecting extrusion liquid after culture, carbonizing, crushing and sieving solid residues after culture, heating and standing sieved particles, ethanol solution, ammonia water and the like, centrifuging, collecting precipitate, grinding with an auxiliary agent after roasting, centrifuging extrusion liquid, concentrating and uniformly mixing with the grinding material, wherein the preparation process is complex, and the compressive strength is required to be further improved.
The Chinese patent application CN108147691A discloses a gypsum retarder and a preparation method, which can be in seamless connection with the existing monosodium glutamate production process, realize the production of the gypsum retarder on the premise of not influencing the normal production of monosodium glutamate, save the cost, reduce the environmental pollution, and comprise 20-30% of glutamic acid fermentation nitrogen source, 0.01-0.05% of phenethyl acetate, 0.2-0.8% of diisopropylethylamine and 30-45% of water. However, there is a problem in that the gypsum retarder prepared by this method has a difference in setting time and strength.
The above prior art provides a certain technical teaching, especially the application of protein in preparing gypsum retarder, but the problem is how to maintain better strength characteristics while maintaining setting time, in addition, different pH values have influence on the gypsum retarder, in order to make the gypsum retarder obtain better technical effect, the pH values are usually adjusted according to the retarder type, but the applicable pH values for different components of the composite gypsum retarder are not the same, which increases the complexity of the building process, is limited by specific environmental conditions, and the influence of the pH values on the gypsum retarder is also a problem to be solved.
Disclosure of Invention
The invention aims to provide the pH universal type efficient gypsum retarder and the preparation method thereof, and particularly the preparation method is simple, the used raw materials are easy to obtain, the hardness can be ensured while the gypsum retarding effect is enhanced through specific components and proportions, the pH universal type efficient gypsum retarder is suitable for different pH environments, and a new idea is provided for the gypsum retarder and the preparation method thereof.
In order to achieve the above object, the technical scheme of the present invention is as follows:
The pH universal efficient gypsum retarder comprises the following components in parts by mass: 1-10 amine compounds, 5-15 bone glue, 10-50 reinforcing agents, 1-12 citric acid, 0.02-0.1 water reducer, 0.05-0.25 surfactant and 200-400 water.
Further, the amine compound is glycine, and the calcium increasing agent is gray calcium powder.
Further, the water reducer is sulfonated melamine formaldehyde resin.
Further, the surfactant comprises tween-80 and sulfonated lignin, and the mass ratio of the tween-80 to the sulfonated lignin is 0.5:1-5.
Further, the gypsum retarder comprises the following components in parts by mass: 1-8 amine compounds, 5-12 bone glue, 30-50 reinforcing agents, 5-12 citric acid, 0.02-0.06 water reducer, 0.05-0.14 surfactant and 260-400 water, wherein the amine compounds are glycine, the reinforcing agents are gray calcium powder, and the water reducer is sulfonated melamine formaldehyde resin.
Further, the gypsum retarder comprises the following components in parts by mass: 5 amine compounds, 9 bone glue, 34 reinforcing agents, 6 citric acid, 0.05 water reducing agent, 0.12 surfactant and 310 water, wherein the amine compounds are glycine, the reinforcing agents are gray calcium powder, the water reducing agent is sulfonated melamine formaldehyde resin, the surfactant comprises tween-80 and sulfonated lignin, and the mass ratio of the surfactant is 0.5:2.
Further, the addition of the gypsum retarder in the gypsum accounts for 0.03-0.06% of the total weight of the gypsum during construction.
Furthermore, the gypsum retarder is characterized in that the gypsum selected during construction is desulfurized gypsum.
Further, the preparation method of the pH universal high-efficiency gypsum retarder comprises the following steps:
S1, adding the bone glue, citric acid, surfactant and water in the formula amount into a reactor, and stirring for 20-40min at 40-60 ℃ to uniformly mix the bone glue, the citric acid, the surfactant and the water;
s2, adding the amine compound and the water reducer into the reactor in the step S1 according to the formula amount, stirring for 10-50min at normal temperature, uniformly mixing, and then spray-drying;
And S3, after the operation of the step S2 is completed, stirring the reinforcing agent and the product obtained in the step S2 in a dispersing machine for 50-70min, and fully mixing to obtain the gypsum retarder.
Furthermore, the pH universal type efficient gypsum retarder is suitable for the application of gypsum retarding and reinforcing.
Gypsum retarder has been widely used in China, but gypsum retarder constructed with single component, such as organic acid, phosphate and protein, has defects of different degrees including influence on compressive strength of gypsum, cost and stability. The experiment shows that the composite retarder has better retarding effect and has less influence on the strength of gypsum. The invention combines different characteristics of the existing retarder to compound, and is assisted by different raw materials to obtain the efficient composite retarder.
The citric acid, the bone glue and the amine compound are the components which play a main role in the invention, the amine compound is industrial glycine, the citric acid and calcium ions form stable calcium citrate through complexation, the bone glue and the glycine are protein products, and the calcium ions on the surface of the gypsum are combined to cover the surface of the gypsum crystal nucleus, so that the surface energy of the crystal nucleus is reduced, and the hydration process of the gypsum crystal nucleus is slowed down.
The industrial glycine content is stable, the cost is lower, and the citric acid and the bone glue play a role to reduce the dosage, thereby being more suitable for general application occasions. The bone glue has stable property, and the effect of coating can obviously enhance the influence of pH on the whole gypsum retarder system after the bone glue is added into the system.
The surfactant Tween-80 and the sulfonated lignin have different effects, the former is more focused on dissolution assisting, the gypsum retarder can be accelerated to ensure a higher dissolution speed in application, the sulfonated lignin is more focused on the dispersing effect, and the effects of different components can be exerted more quickly.
The nature of the sulfonated melamine formaldehyde resin serving as the water reducing agent is also a surfactant, and the water reducing agent mainly has the effect of adjusting the problem of strength reduction caused by citric acid, is beneficial to the fluidity of gypsum, and finally improves the performance of the gypsum.
The reinforcing agent gray calcium powder is a component which is mixed by spray drying after other components are mixed, so that the fluidity and strength of gypsum can be further enhanced during application.
Compared with the prior art, the invention has the following advantages:
(1) The invention has definite raw material composition and clear theoretical basis, and comprises amine compounds, bone glue, reinforcing agent, citric acid, water reducing agent, surfactant and the like. The pH universal high-efficiency gypsum retarder provided by the invention is a compound system with a relatively clear action mechanism, and different raw materials not only play the functions of the retarder, but also make up the defects of other raw materials.
(2) The preparation process is simple, the bone glue, the citric acid, the surfactant and the water are added into the reactor in the formula amount to be uniformly mixed, then the amine compound and the water reducer in the formula amount are added into the reactor to be uniformly mixed, the spray drying is carried out, after the operation is completed, the reinforcing agent is added to be fully mixed in the dispersing machine, and the gypsum retarder is obtained, the materials used in the whole process are low in cost and easy to obtain, the process is not excessively complicated, and the practicability is strong.
(3) The pH universal high-efficiency gypsum retarder prepared by the invention is a composite system, citric acid, bone glue and amine compounds are used as main retarder components, different components play different roles, and the pH universal high-efficiency gypsum retarder plays roles in reducing cost, alleviating the influence of pH values, increasing application scenes, reducing strength reduction caused by retarder effect and the like, and has synergistic effect.
(4) The invention also creatively adds the water reducer and the surfactant, the addition of the water reducer further prevents the reduction of the gypsum strength, and the surfactant can increase the dissolution and dispersion effects and promote the overall effect of the gypsum retarder system.
(5) The invention further adds the reinforcing agent ash calcium powder, which can improve the performance of the gypsum retarder under lower cost, especially in terms of fluidity and strength.
(6) The pH universal high-efficiency gypsum retarder prepared by the invention has clear and definite action mechanism among the components, obtains better mass fraction ratio through experiments, creatively adds components which are not used in the traditional gypsum retarder, obtains better effect and has wide market prospect.
Detailed Description
The following description of the invention will be further explained with reference to examples. The scope of the above subject matter of the present invention is not limited to the following examples.
Bone glue, citric acid, sulfonated melamine formaldehyde resin and the like used in the following examples are all common commercial raw materials in the market. The methods referred to in the following examples are conventional in the art unless otherwise specified.
Example 1
The preparation method of the pH universal efficient gypsum retarder comprises the following steps of:
s1, adding the bone glue, citric acid, surfactant and water in the formula amount into a reactor, and stirring for 20min at 40 ℃ to uniformly mix the bone glue, the citric acid, the surfactant and the water;
s2, adding the amine compound and the water reducer in the formula amount into the reactor in the step S1, stirring for 10min at normal temperature, uniformly mixing, and then spray-drying;
and S3, after the operation of the step S2 is completed, stirring the reinforcing agent and the product obtained in the step S2 in a dispersing machine for 50min, and fully mixing to obtain the gypsum retarder.
The gypsum retarder comprises the following components in parts by mass: 1 amine compound, 5 bone glue, 10 reinforcing agent, 1 citric acid, 0.02 water reducing agent, 0.05 surfactant and 200 water. The amine compound is glycine, the calcium increasing agent is gray calcium powder, the water reducing agent is sulfonated melamine formaldehyde resin, and the surfactant comprises tween-80 and sulfonated lignin, wherein the mass ratio of the tween-80 to the sulfonated lignin is 0.5:1.
The addition of the gypsum retarder in the gypsum accounts for 0.03% of the total weight of the gypsum during construction, and the gypsum selected for the gypsum retarder during construction is desulfurized gypsum.
Example 2
The preparation method of the pH universal efficient gypsum retarder comprises the following steps of:
s1, adding the bone glue, citric acid, surfactant and water in the formula amount into a reactor, and stirring for 20min at 40 ℃ to uniformly mix the bone glue, the citric acid, the surfactant and the water;
S2, adding the amine compound and the water reducer in the formula amount into the reactor in the step S1, stirring for 15min at normal temperature, uniformly mixing, and then spray-drying;
and S3, after the operation of the step S2 is completed, stirring the reinforcing agent and the product obtained in the step S2 in a dispersing machine for 50min, and fully mixing to obtain the gypsum retarder.
The gypsum retarder comprises the following components in parts by mass: 8 amine compounds, 15 bone glue, 50 reinforcing agents, 12 citric acid, 0.1 water reducing agent, 0.25 surfactant and 400 water. The amine compound is glycine, the calcium increasing agent is gray calcium powder, the water reducing agent is sulfonated melamine formaldehyde resin, and the surfactant comprises tween-80 and sulfonated lignin, wherein the mass ratio of the tween-80 to the sulfonated lignin is 0.5:5.
The addition of the gypsum retarder in the gypsum accounts for 0.06% of the total weight of the gypsum during construction, and the gypsum selected for the gypsum retarder during construction is desulfurized gypsum.
Example 3
The preparation method of the pH universal efficient gypsum retarder comprises the following steps of:
s1, adding the bone glue, citric acid, surfactant and water in the formula amount into a reactor, and stirring for 40min at 60 ℃ to uniformly mix the bone glue, the citric acid, the surfactant and the water;
s2, adding the amine compound and the water reducer in the formula amount into the reactor in the step S1, stirring for 50min at normal temperature, uniformly mixing, and then spray-drying;
and S3, after the operation of the step S2 is completed, stirring the reinforcing agent and the product obtained in the step S2 in a dispersing machine for 70min, and fully mixing to obtain the gypsum retarder.
The gypsum retarder comprises the following components in parts by mass: 8 amine compounds, 12 bone glue, 50 reinforcing agents, 12 citric acid, 0.06 water reducing agent, 0.14 surfactant and 260 water, wherein the amine compounds are glycine, the reinforcing agents are gray calcium powder, the water reducing agent is sulfonated melamine formaldehyde resin, the surfactant comprises tween-80 and sulfonated lignin, and the mass ratio of the surfactant is 0.5:3.
The addition of the gypsum retarder in the gypsum accounts for 0.03% of the total weight of the gypsum during construction, and the gypsum selected for the gypsum retarder during construction is desulfurized gypsum.
Example 4
The preparation method of the pH universal efficient gypsum retarder comprises the following steps of:
s1, adding the bone glue, citric acid, surfactant and water in the formula amount into a reactor, and stirring for 40min at 60 ℃ to uniformly mix the bone glue, the citric acid, the surfactant and the water;
s2, adding the amine compound and the water reducer in the formula amount into the reactor in the step S1, stirring for 50min at normal temperature, uniformly mixing, and then spray-drying;
and S3, after the operation of the step S2 is completed, stirring the reinforcing agent and the product obtained in the step S2 in a dispersing machine for 70min, and fully mixing to obtain the gypsum retarder.
The gypsum retarder comprises the following components in parts by mass: 6 amine compounds, 12 bone glue, 32 reinforcing agent, 9 citric acid, 0.08 water reducing agent, 0.25 surfactant and 350 water. The amine compound is glycine, the calcium increasing agent is gray calcium powder, the water reducing agent is sulfonated melamine formaldehyde resin, and the surfactant comprises tween-80 and sulfonated lignin, wherein the mass ratio of the tween-80 to the sulfonated lignin is 0.5:4.
The addition of the gypsum retarder in the gypsum accounts for 0.05% of the total weight of the gypsum during construction, and the gypsum selected for the gypsum retarder during construction is desulfurized gypsum.
Example 5
The preparation method of the pH universal efficient gypsum retarder comprises the following steps of:
S1, adding the bone glue, citric acid, surfactant and water in the formula amount into a reactor, and stirring for 40min at 40 ℃ to uniformly mix the bone glue, the citric acid, the surfactant and the water;
s2, adding the amine compound and the water reducer in the formula amount into the reactor in the step S1, stirring for 40min at normal temperature, uniformly mixing, and then spray-drying;
and S3, after the operation of the step S2 is completed, stirring the reinforcing agent and the product obtained in the step S2 in a dispersing machine for 70min, and fully mixing to obtain the gypsum retarder.
The gypsum retarder comprises the following components in parts by mass: 5 amine compounds, 9 bone glue, 34 reinforcing agents, 6 citric acid, 0.05 water reducing agent, 0.12 surfactant and 310 water, wherein the amine compounds are glycine, the reinforcing agents are gray calcium powder, the water reducing agent is sulfonated melamine formaldehyde resin, the surfactant comprises tween-80 and sulfonated lignin, and the mass ratio of the surfactant is 0.5:2.
The addition of the gypsum retarder in the gypsum accounts for 0.04% of the total weight of the gypsum during construction, and the gypsum selected for the gypsum retarder during construction is desulfurized gypsum.
Comparative example 1,
The preparation method of the pH universal efficient gypsum retarder comprises the following steps of:
S1, adding the bone glue, citric acid, surfactant and water in the formula amount into a reactor, and stirring for 40min at 40 ℃ to uniformly mix the bone glue, the citric acid, the surfactant and the water;
s2, adding the formula amount of amine compound into the reactor in the step S1, stirring for 40min at normal temperature, uniformly mixing and then spray drying;
and S3, after the operation of the step S2 is completed, stirring the reinforcing agent and the product obtained in the step S2 in a dispersing machine for 70min, and fully mixing to obtain the gypsum retarder.
The gypsum retarder comprises the following components in parts by mass: 5 amine compounds, 9 bone glue, 34 reinforcing agents, 6 citric acid, 0.12 surfactant and 310 water, wherein the amine compounds are glycine, the reinforcing agents are gray calcium powder, the surfactant comprises tween-80 and sulfonated lignin, and the mass ratio of the amine compounds to the surfactant is 0.5:2.
The addition of the gypsum retarder in the gypsum accounts for 0.04% of the total weight of the gypsum during construction, and the gypsum selected for the gypsum retarder during construction is desulfurized gypsum.
This comparative example is similar to example 5, except that the gypsum retarder in this comparative example is not added with a water reducing agent.
Comparative example 2,
The preparation method of the pH universal efficient gypsum retarder comprises the following steps of:
S1, adding the bone glue, citric acid, surfactant and water in the formula amount into a reactor, and stirring for 40min at 40 ℃ to uniformly mix the bone glue, the citric acid, the surfactant and the water;
s2, adding the water reducer with the formula amount into the reactor in the step S1, stirring for 40min at normal temperature, uniformly mixing, and then spray-drying;
and S3, after the operation of the step S2 is completed, stirring the reinforcing agent and the product obtained in the step S2 in a dispersing machine for 70min, and fully mixing to obtain the gypsum retarder.
The gypsum retarder comprises the following components in parts by mass: 9 bone glue, 34 reinforcing agent, 6 citric acid, 0.05 water reducing agent, 0.12 surfactant and 310 water, wherein the reinforcing agent is gray calcium powder, the water reducing agent is sulfonated melamine formaldehyde resin, the surfactant comprises tween-80 and sulfonated lignin, and the mass ratio of the reinforcing agent to the water reducing agent is 0.5:2.
The addition of the gypsum retarder in the gypsum accounts for 0.04% of the total weight of the gypsum during construction, and the gypsum selected for the gypsum retarder during construction is desulfurized gypsum.
This comparative example is similar to example 5, except that the gypsum retarder in this comparative example is not added with the amine compound glycine.
Comparative example 3,
The preparation method of the pH universal efficient gypsum retarder comprises the following steps of:
s1, adding citric acid, a surfactant and water in a formula amount into a reactor, and stirring for 40min at 40 ℃ to uniformly mix the materials;
s2, adding the amine compound and the water reducer in the formula amount into the reactor in the step S1, stirring for 40min at normal temperature, uniformly mixing, and then spray-drying;
and S3, after the operation of the step S2 is completed, stirring the reinforcing agent and the product obtained in the step S2 in a dispersing machine for 70min, and fully mixing to obtain the gypsum retarder.
The gypsum retarder comprises the following components in parts by mass: 5 amine compounds, 34 reinforcing agents, 6 citric acid, 0.05 water reducing agent, 0.12 surfactant and 310 water, wherein the amine compounds are glycine, the reinforcing agents are gray calcium powder, the water reducing agent is sulfonated melamine formaldehyde resin, the surfactant comprises tween-80 and sulfonated lignin, and the mass ratio of the surfactant is 0.5:2.
The addition of the gypsum retarder in the gypsum accounts for 0.04% of the total weight of the gypsum during construction, and the gypsum selected for the gypsum retarder during construction is desulfurized gypsum.
This comparative example is similar to example 5, except that the gypsum retarder in this comparative example was not added with bone cement.
Experimental example, effect of gypsum retarder experimental object: the pH-pervasive high-efficiency gypsum retarder obtained in examples 1-5 and comparative examples 1-3.
The experimental method comprises the following steps:
(1) And (3) measuring setting time, wherein the setting time of gypsum comprises initial setting time and final setting time, and according to GB/T17669.4, under a standard consistency and setting time measuring instrument, the initial setting time and the final setting time are respectively measured according to a measuring method of the initial setting time and the final setting time of gypsum.
(2) The compression strength at different pH values was measured by a compression tester according to GB/T17669.3 standard, and the loss rate of strength was measured against a blank. The pH value of the gypsum hydration liquid needs to be adjusted, the acid mixing water is prepared by H2SO4, the alkaline mixing water is prepared by NaOH, and the pH value is measured and adjusted to the pH value required by experiments by an acidometer.
Experimental results: as shown in tables 1-2:
| Treatment of | Blank sample | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Initial setting time | 7 | 116 | 135 | 132 | 138 | 142 | 138 | 125 | 122 |
| Final setting time | 12 | 122 | 138 | 139 | 141 | 155 | 144 | 131 | 128 |
Table 1: retarding effect of different gypsum retarders
Table 2: compressive strength change of different gypsum retarders after pH value change
As shown in tables 1-2, the pH universal type efficient gypsum retarder provided by the invention has good retarding effect, strength loss reduction and the like, and particularly can control the reduction of gypsum strength under different pH conditions. From the view of retarding effect, the technical scheme provided by the embodiment realizes that the initial setting time is more than 110min, accords with the general construction condition, and in terms of strength, the embodiment 5 is a preferred embodiment of the invention, the strength loss rate is about 8% under different acid-base conditions, the strength is influenced by not adding the water reducer in the comparative example 1, the strength is influenced by the absence of glycine in the comparative example 2, and the bone glue in the comparative example 3 is not added, so that the bone glue cannot exert the synergistic effect among different components, and the strength loss rate is greatly increased.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (8)
1. The pH universal type efficient gypsum retarder is characterized by comprising the following components in parts by weight: 1-10 parts of amine compound, 5-15 parts of bone glue, 10-50 parts of reinforcing agent, 1-12 parts of citric acid, 0.02-0.1 part of water reducer, 0.05-0.25 part of surfactant and 200-400 parts of water; the amine compound is glycine; the water reducing agent is sulfonated melamine formaldehyde resin.
2. The pH-ubiquitous high-efficiency gypsum retarder according to claim 1, wherein the reinforcing agent is gray calcium powder.
3. The pH-ubiquitous high-efficiency gypsum retarder according to claim 1, wherein the surfactant comprises tween-80 and sulfonated lignin in a mass ratio of 0.5:1-5.
4. The pH universal high-efficiency gypsum retarder according to claim 1, wherein the gypsum retarder comprises the following components in parts by mass: 1-8 parts of amine compound, 5-12 parts of bone glue, 30-50 parts of reinforcing agent, 5-12 parts of citric acid, 0.02-0.06 part of water reducer, 0.05-0.14 part of surfactant and 260-400 parts of water.
5. The pH universal high-efficiency gypsum retarder according to claim 4, wherein the gypsum retarder comprises the following components in parts by mass: 5 parts of amine compound, 9 parts of bone glue, 34 parts of reinforcing agent, 6 parts of citric acid, 0.05 part of water reducer, 0.12 part of surfactant and 310 parts of water, wherein the surfactant comprises tween-80 and sulfonated lignin, and the mass ratio of the surfactant is 0.5:2.
6. The pH-ubiquitous high-efficiency gypsum retarder according to any of claims 1-5, wherein the gypsum retarder is added to gypsum in an amount of 0.03% -0.06% by weight based on the total weight of gypsum during construction.
7. The pH-ubiquitous high-efficiency gypsum retarder according to any of claims 1-5, wherein the gypsum retarder is selected from the group consisting of desulfurized gypsum during construction.
8. The pH-pervasive high-efficiency gypsum retarder according to any of claims 1-5, wherein the method for preparing the pH-pervasive high-efficiency gypsum retarder comprises:
S1, adding the bone glue, citric acid, surfactant and water in the formula amount into a reactor, and stirring for 20-40min at 40-60 ℃ to uniformly mix the bone glue, the citric acid, the surfactant and the water;
s2, adding the amine compound and the water reducer into the reactor in the step S1 according to the formula amount, stirring for 10-50min at normal temperature, uniformly mixing, and then spray-drying;
And S3, after the operation of the step S2 is completed, stirring the reinforcing agent and the product obtained in the step S2 in a dispersing machine for 50-70min, and fully mixing to obtain the gypsum retarder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311349946.4A CN117303785B8 (en) | 2023-10-18 | 2023-10-18 | PH universal type efficient gypsum retarder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311349946.4A CN117303785B8 (en) | 2023-10-18 | 2023-10-18 | PH universal type efficient gypsum retarder |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| CN117303785A CN117303785A (en) | 2023-12-29 |
| CN117303785B true CN117303785B (en) | 2024-04-19 |
| CN117303785B8 CN117303785B8 (en) | 2024-06-28 |
Family
ID=89273558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311349946.4A Active CN117303785B8 (en) | 2023-10-18 | 2023-10-18 | PH universal type efficient gypsum retarder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117303785B8 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54157127A (en) * | 1978-06-01 | 1979-12-11 | Ajinomoto Kk | Retarder for gypsum coagulation |
| CN102674736A (en) * | 2012-05-09 | 2012-09-19 | 上海大学 | Preparation method of desulfurization building gypsum retarder |
| CN104086115A (en) * | 2014-07-14 | 2014-10-08 | 广东龙湖科技股份有限公司 | Gypsum retarder capable of improving strength and binding strength of gypsum base material |
| 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 |
| CN112573858A (en) * | 2020-12-14 | 2021-03-30 | 北京建筑材料科学研究总院有限公司 | Polymer gypsum retarder and preparation method and application thereof |
| CN115259728A (en) * | 2022-08-15 | 2022-11-01 | 四川奥克化学有限公司 | Gypsum retarder and preparation method thereof |
-
2023
- 2023-10-18 CN CN202311349946.4A patent/CN117303785B8/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54157127A (en) * | 1978-06-01 | 1979-12-11 | Ajinomoto Kk | Retarder for gypsum coagulation |
| CN102674736A (en) * | 2012-05-09 | 2012-09-19 | 上海大学 | Preparation method of desulfurization building gypsum retarder |
| CN104086115A (en) * | 2014-07-14 | 2014-10-08 | 广东龙湖科技股份有限公司 | Gypsum retarder capable of improving strength and binding strength of gypsum base material |
| 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 |
| CN112573858A (en) * | 2020-12-14 | 2021-03-30 | 北京建筑材料科学研究总院有限公司 | Polymer gypsum retarder and preparation method and application thereof |
| CN115259728A (en) * | 2022-08-15 | 2022-11-01 | 四川奥克化学有限公司 | Gypsum retarder and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117303785A (en) | 2023-12-29 |
| CN117303785B8 (en) | 2024-06-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103274632B (en) | Enhanced cement grinding aid and preparation method thereof | |
| CN110963732A (en) | Environment-friendly alkali-free liquid accelerator and normal-temperature preparation method thereof | |
| CN101164954A (en) | Method for preparing phosphogypsum retardation setting high efficiency water reducing agent | |
| CN111646727A (en) | Composite cement additive | |
| CN111848978B (en) | Modified bagasse retarder and preparation method thereof | |
| CN115490455B (en) | Low-doping-amount enhanced cement grinding aid and preparation method thereof | |
| CN103880318B (en) | The cement activation synergist being mixing material with marble powder, granite powder, limestone, desuifurized powder, paper white sludge | |
| CN117303785B (en) | PH universal type efficient gypsum retarder | |
| CN101560075B (en) | Limestone powder mineral admixture special for concrete and preparation method thereof | |
| CN112500018B (en) | Degradable efficient gypsum retarder and preparation method and application thereof | |
| CN115259743A (en) | Cement synergist for reducing clinker mixing amount | |
| CN108516725A (en) | A kind of retardation setting type cement grinding aid | |
| CN107601951B (en) | Starch syrup special for concrete and preparation method thereof | |
| CN116119956A (en) | Modified phosphorus slag powder, preparation method and application of modified phosphorus slag powder in concrete with large doping amount | |
| CN115504702A (en) | Organic acid-protein composite gypsum retarder and preparation method thereof | |
| CN104478271B (en) | Aliphatic water reducer and preparation method thereof | |
| CN115678034B (en) | Modified plant hydrolyzed protein retarder and preparation method and application thereof | |
| CN113603377A (en) | Cement produced by utilizing electrolytic manganese slag and production method thereof | |
| CN110451829A (en) | A kind of phosphogypsum modification agent and preparation method thereof | |
| CN1137496A (en) | Method for preparation of alkali excited natural ore mixed material cement | |
| CN107253834B (en) | A kind of regenerating and modifying slurry composition and preparation method thereof | |
| CN105110690A (en) | Slag grinding aid and preparation method thereof | |
| CN115677257B (en) | Green efficient gypsum retarder | |
| CN116063019B (en) | Red mud-based composite admixture and preparation method thereof | |
| CN109485289A (en) | A kind of high-alkali cement exciting agent and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CI03 | Correction of invention patent |
Correction item: Address Correct: 448000, No. 6 Yangguang 1st Road, Duodao District, Jingmen High tech Zone, Jingmen City, Hubei Province False: 448000, No. 6 Yangguang 1st Road, Duodao District, Jingmen High tech Zone, Jingzhou City, Hubei Province Number: 16-02 Page: The title page Volume: 40 Correction item: Address False: 448000, No. 6 Yangguang 1st Road, Duodao District, Jingmen High tech Zone, Jingzhou City, Hubei Province Number: 16-02 Volume: 40 |
|
| CI03 | Correction of invention patent | ||
| OR01 | Other related matters | ||
| OR01 | Other related matters |