CN112608055A - Preservative composition and preparation method and application thereof - Google Patents
Preservative composition and preparation method and application thereof Download PDFInfo
- Publication number
- CN112608055A CN112608055A CN202011143505.5A CN202011143505A CN112608055A CN 112608055 A CN112608055 A CN 112608055A CN 202011143505 A CN202011143505 A CN 202011143505A CN 112608055 A CN112608055 A CN 112608055A
- Authority
- CN
- China
- Prior art keywords
- parts
- preservative composition
- preservative
- component
- solution
- 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.)
- Pending
Links
- 230000002335 preservative effect Effects 0.000 title claims abstract description 152
- 239000003755 preservative agent Substances 0.000 title claims abstract description 145
- 239000000203 mixture Substances 0.000 title claims abstract description 139
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 86
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 45
- 239000003381 stabilizer Substances 0.000 claims abstract description 22
- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 16
- 230000003385 bacteriostatic effect Effects 0.000 claims abstract description 12
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 18
- 230000001954 sterilising effect Effects 0.000 claims description 14
- 238000004659 sterilization and disinfection Methods 0.000 claims description 14
- BEGLCMHJXHIJLR-UHFFFAOYSA-N methylisothiazolinone Chemical group CN1SC=CC1=O BEGLCMHJXHIJLR-UHFFFAOYSA-N 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 239000001509 sodium citrate Substances 0.000 claims description 11
- 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 claims description 11
- CHHHXKFHOYLYRE-UHFFFAOYSA-M 2,4-Hexadienoic acid, potassium salt (1:1), (2E,4E)- Chemical compound [K+].CC=CC=CC([O-])=O CHHHXKFHOYLYRE-UHFFFAOYSA-M 0.000 claims description 9
- 229940100555 2-methyl-4-isothiazolin-3-one Drugs 0.000 claims description 9
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 claims description 9
- 239000004302 potassium sorbate Substances 0.000 claims description 9
- 235000010241 potassium sorbate Nutrition 0.000 claims description 9
- 229940069338 potassium sorbate Drugs 0.000 claims description 9
- 239000004317 sodium nitrate Substances 0.000 claims description 9
- 235000010344 sodium nitrate Nutrition 0.000 claims description 9
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 3
- 244000005700 microbiome Species 0.000 abstract description 13
- 230000001988 toxicity Effects 0.000 abstract description 9
- 231100000419 toxicity Toxicity 0.000 abstract description 9
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 45
- 239000008367 deionised water Substances 0.000 description 29
- 229910021641 deionized water Inorganic materials 0.000 description 29
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 description 6
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 238000002835 absorbance Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005183 environmental health Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012113 quantitative test Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000002562 thickening agent 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
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/67—Biocides
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention relates to a preservative composition, a preparation method and application thereof, and a concrete water reducing agent containing the preservative composition. The preservative composition comprises the following components in parts by weight: 5-15 parts of bacteriostatic component, 1-5 parts of bactericidal component, 4-10 parts of stabilizer component and 70-90 parts of water. The preservative composition disclosed by the invention is low in toxicity, environment-friendly and excellent in bacteriostatic property. The preservative composition can effectively inhibit the growth of microorganisms, still has high preservative performance under the high-temperature environment which is higher than room temperature, and in addition, the range of the pH value of the preservative composition matched by the components is wide, and the preservative composition still has strong preservative effect under different pH values.
Description
Technical Field
The invention relates to the technical field of concrete water reducing agents, in particular to a preservative composition and a preparation method and application thereof.
Background
Concrete water reducers include organic components such as thickeners, retarders, and the like. The organic matter component can provide nutritional conditions for the growth of microorganisms, for example, bacteria and mould can grow in the concrete water reducing agent, and the well-grown microorganisms can pollute the concrete water reducing agent, so that the concrete water reducing agent is easy to deteriorate and stink in the storage process, and is particularly serious under the high-temperature condition. In addition, due to the growth specificity of the microorganisms, the microorganisms only need certain components in the concrete water reducing agent, namely the microorganisms selectively consume the components of the concrete water reducing agent, so that the components of the concrete water reducing agent are subjected to unequal deviation.
In order to avoid the deterioration of the concrete water reducing agent, manufacturers in the market usually add a preservative into the concrete water reducing agent, and the preservative product commonly used in the market at present has poor corrosion resistance to the concrete water reducing agent due to toxicity, environmental pollution and inadaptability to high-temperature environment.
Disclosure of Invention
Based on the above, there is a need for a preservative composition, which aims to solve the technical problem of poor preservative performance of the preservative composition products in the prior art.
In order to achieve the above purpose, the present invention provides a technical solution:
a preservative composition comprises the following components in parts by weight:
the antibacterial component: 5 to 15 parts of,
The sterilization components are as follows: 1 to 5 parts of,
The stabilizer component: 4 to 10 parts, and
water: 70-90 parts.
Preferably, the preservative composition has a pH of 2 to 7.
Preferably, the bacteriostatic component is 2-methyl-4-isothiazolin-3-one.
Preferably, the stabilizer component is one or more of sodium citrate, sodium nitrate and disodium edetate.
Preferably, the bactericidal component is one or more of potassium sorbate and 2-methyl-1, 2-phenylpropthiazolinone.
Preferably, the preservative composition has a mass concentration of 10 to 30%.
The invention also provides a preparation method of the preservative composition, which comprises the following steps:
mixing 4-10 parts of stabilizer component, 1-5 parts of sterilization component, 5-15 parts of bacteriostasis component and 70-90 parts of water, stirring and dissolving to obtain the preservative composition.
Preferably, when the temperature of the reaction kettle is 40 ℃, the solution A and the solution B are simultaneously dripped into the reaction kettle at a constant speed.
Preferably, the method comprises the following steps:
adding 4-10 parts of stabilizer component and 20-30 parts of water into a reaction kettle, and stirring for dissolving;
preparing 1-5 parts of a bactericidal component and 15-20 parts of water into a solution A;
preparing 5-15 parts of bacteriostatic component and 35-40 parts of water into a solution B;
and dropwise adding the solution A and the solution B into a reaction kettle.
The invention also provides application of the preservative composition in preparation of a concrete water reducing agent.
The invention also provides a concrete water reducing agent which comprises the preservative composition.
The preservative composition provided by the embodiment of the invention has the following beneficial effects: compared with the prior art, the preservative composition disclosed by the invention is low in toxicity, environment-friendly and excellent in bacteriostatic property. The preservative composition can effectively inhibit the growth of microorganisms, still has high preservative performance under the high-temperature environment which is higher than room temperature, and in addition, the range of the pH value of the preservative composition matched by the components is wide, and the preservative composition still has strong preservative effect under different pH values.
Detailed Description
The technical solutions in the embodiments of the present invention are 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 experimental procedures in the following examples are conventional unless otherwise specified. Test materials, reagents and the like used in the following examples are commercially available unless otherwise specified. In the quantitative tests in the following examples, three replicates were set, and the data are the mean or the mean ± standard deviation of the three replicates.
In addition, "and/or" in the whole text includes three schemes, taking a and/or B as an example, including a technical scheme, and a technical scheme that a and B meet simultaneously; in addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The embodiment of the invention provides a preservative composition, which comprises the following components in parts by weight:
the antibacterial component: 5 to 15 parts of,
The sterilization components are as follows: 1 to 5 parts of,
The stabilizer component: 4 to 10 parts, and
water: 70-90 parts.
Compared with the prior art, the preservative composition prepared by matching the components has low toxicity, is friendly to ecological environment and has excellent bacteriostatic performance. The preservative composition can effectively inhibit the growth of microorganisms, still has high preservative performance under the high-temperature environment which is higher than room temperature, and in addition, the range of the pH value of the preservative composition matched by the components is wide, and the preservative composition still has strong preservative effect under different pH values.
Preferably, the preservative composition has a pH of 2 to 7. The range of pH measured by the preservative composition is wide, so that the preservative composition still has good preservative performance under different environments.
Preferably, the bacteriostatic component is 2-methyl-4-isothiazolin-3-one. The pH of the 2-methyl-4-isothiazoline-3-ketone is widely used, the 2-methyl-4-isothiazoline-3-ketone still has a strong bacteriostatic action under different pH values, and meanwhile, the low-concentration 2-methyl-4-isothiazoline-3-ketone can effectively inhibit the growth of various microorganisms, so that the preservative composition has excellent preservative performance.
Preferably, the stabilizer component is one or more of sodium citrate, sodium nitrate and disodium edetate. The stabilizer component can promote the stability of each component of the preservative composition, and the stabilizer component also has certain capability of inhibiting the growth of microorganisms, when the stabilizer component comprises sodium citrate, the sodium citrate can also improve the thermal stability of the preservative composition, so that the preservative composition can also keep the preservative performance for a long time under the high-temperature environment which is higher than the room temperature.
Preferably, the bactericidal component is one or more of potassium sorbate and 2-methyl-1, 2-phenylpropthiazolinone. The sterilization component in the preservative composition can effectively kill various microorganisms under the conditions of low concentration and low dosage, so that the preservative composition has strong preservative property.
Preferably, the preservative composition has a mass concentration of 10 to 30%. Namely, the ratio of the mass of the solute in the dried preservative composition to the mass of the solution containing the solute in the preservative composition before drying is 10-30%, and the preservative composition with the mass concentration of 10-30% can effectively inhibit and kill microorganisms in the concrete water reducer.
The embodiment of the invention also provides a preparation method of the preservative composition, which comprises the following steps:
mixing 4-10 parts of stabilizer component, 1-5 parts of sterilization component, 5-15 parts of bacteriostasis component and 70-90 parts of water, stirring and dissolving to obtain the preservative composition.
The preservative composition prepared by the preparation method of the preservative composition is low in toxicity, environment-friendly and excellent in bacteriostatic performance and bactericidal performance, and still has high preservative performance under a high-temperature environment higher than room temperature.
Preferably, in some embodiments, the preservative composition is prepared by a method comprising the steps of:
adding 4-10 parts of stabilizer component and 20-30 parts of water into a reaction kettle, and stirring for dissolving;
preparing 1-5 parts of a bactericidal component and 15-20 parts of water into a solution A;
preparing 5-15 parts of bacteriostatic component and 35-40 parts of water into a solution B;
and dripping the solution A and the solution B into a reaction kettle to obtain the product, namely the preservative composition.
The preservative composition prepared by the preparation method has high thermal stability, so that the preservative property of the preservative composition is improved.
Preferably, in some embodiments, the water is deionized water, so that the preservative composition prepared has a stronger preservative effect.
Preferably, in some embodiments, the solution A and the solution B are added into the reaction kettle at a constant speed when the temperature of the reaction kettle is 40 ℃. Specifically, a temperature control switch of the reaction kettle is opened, the temperature is adjusted to 40 ℃, and when the temperature of the reaction kettle reaches 40 ℃, the solution A and the solution B are dropwise added at a constant speed. So that the components in the preservative composition are uniformly mixed, the thermal stability of the preservative composition is improved, and the preservative composition can also keep the preservative performance for a long time in a high-temperature environment higher than room temperature.
Preferably, in some embodiments, the dropping time of the solution A and the solution B is 2-3 h, and after the dropping of the solution A and the solution B is finished, the temperature is kept at 40 ℃ for 1-2 h. So that the components in the preservative composition are uniformly mixed, the thermal stability of the preservative composition is improved, and the preservative composition can also keep the preservative performance for a long time in a high-temperature environment higher than room temperature.
The preservative composition is mainly applied to the preparation of concrete water reducing agents.
The embodiment of the invention also provides a concrete water reducing agent which comprises the preservative composition.
Compared with the prior art, the concrete water reducing agent disclosed by the invention has the advantages that due to the adoption of the preservative composition, microorganisms in the concrete water reducing agent can be effectively inhibited and killed, the concrete water reducing agent can not generate acid or odor under a high-temperature environment, and the pH range of the preservative composition is adapted to the pH range of the concrete water reducing agent, so that after the preservative composition disclosed by the invention is used for the concrete water reducing agent, the preservative composition still has a strong preservative effect so as to prolong the storage time of the concrete water reducing agent.
The following are specific examples, and the starting materials in the examples are all commercially available products unless otherwise specified.
Example 1
This embodiment is a preservative composition, which comprises, by weight:
the antibacterial component: 5 portions of,
The sterilization components are as follows: 1 part of,
The stabilizer component: 4 parts by weight, and
deionized water: and 90 parts.
The preparation method of the preservative composition comprises the following steps:
adding 2 parts of sodium citrate, 1 part of sodium nitrate, 1 part of disodium ethylene diamine tetraacetate and 30 parts of deionized water into a reaction kettle, opening a temperature control switch of the reaction kettle, and stirring for dissolving;
preparing 1 part of potassium sorbate and 20 parts of deionized water into a solution A;
preparing 5 parts of 2-methyl-4-isothiazolin-3-one and 40 parts of deionized water into a solution B;
and when the temperature of the reaction kettle reaches 40 ℃, simultaneously dropwise adding the solution A and the solution B at a constant speed for 2 hours, and after finishing dropwise adding, keeping the temperature at 40 ℃ for 1 hour to obtain the preservative composition with the mass concentration of 10%.
Example 2
This embodiment is a preservative composition, which comprises, by weight:
the antibacterial component: 7 portions of,
The sterilization components are as follows: 2 portions of,
The stabilizer component: 5 parts by weight, and
deionized water: 86 parts of the raw materials.
The preparation method of the preservative composition comprises the following steps:
adding 2 parts of sodium citrate, 2 parts of sodium nitrate, 1 part of disodium ethylene diamine tetraacetate and 29 parts of deionized water into a reaction kettle, opening a temperature control switch of the reaction kettle, and stirring for dissolving;
preparing 1 part of potassium sorbate, 1 part of 2-methyl-1, 2-phenylpropthiazolinone and 19 parts of deionized water into a solution A;
preparing 7 parts of 2-methyl-4-isothiazolin-3-one and 38 parts of deionized water into a solution B;
when the temperature of the reaction kettle reaches 40 ℃, simultaneously dropwise adding the solution A and the solution B at a constant speed for 2.5 hours, and after finishing dropwise adding, keeping the temperature at 40 ℃ for 2 hours to obtain the preservative composition with the mass concentration of 14%.
Example 3
This embodiment is a preservative composition, which comprises, by weight:
the antibacterial component: 7 portions of,
The sterilization components are as follows: 3 portions of,
The stabilizer component: 6 parts and
deionized water: 84 parts.
The preparation method of the preservative composition comprises the following steps:
adding 2 parts of sodium citrate, 2 parts of sodium nitrate, 2 parts of disodium ethylene diamine tetraacetate and 28 parts of deionized water into a reaction kettle, opening a temperature control switch of the reaction kettle, and stirring for dissolving;
preparing 1 part of potassium sorbate, 2 parts of 2-methyl-1, 2-phenylpropthiazolinone and 18 parts of deionized water into a solution A;
preparing 7 parts of 2-methyl-4-isothiazolin-3-one and 38 parts of deionized water into a solution B;
and when the temperature of the reaction kettle reaches 40 ℃, simultaneously dropwise adding the solution A and the solution B at a constant speed for 3 hours, and after finishing dropwise adding, keeping the temperature at 40 ℃ for 1 hour to obtain the preservative composition with the mass concentration of 16%.
Example 4
This embodiment is a preservative composition, which comprises, by weight:
the antibacterial component: 7 portions of,
The sterilization components are as follows: 5 portions of,
The stabilizer component: 8 parts by weight, and
deionized water: 80 parts of the raw materials.
The preparation method of the preservative composition comprises the following steps:
adding 4 parts of sodium citrate, 2 parts of sodium nitrate, 2 parts of disodium ethylene diamine tetraacetate and 26 parts of deionized water into a reaction kettle, opening a temperature control switch of the reaction kettle, and stirring for dissolving;
preparing 3 parts of potassium sorbate, 2 parts of 2-methyl-1, 2-phenylpropthiazolinone and 16 parts of deionized water into a solution A;
preparing 7 parts of 2-methyl-4-isothiazolin-3-one and 38 parts of deionized water into a solution B;
and when the temperature of the reaction kettle reaches 40 ℃, simultaneously dropwise adding the solution A and the solution B at a constant speed for 2 hours, and after finishing dropwise adding, keeping the temperature at 40 ℃ for 2 hours to obtain the preservative composition with the mass concentration of 20%.
Example 5
This embodiment is a preservative composition, which comprises, by weight:
the antibacterial component: 12 portions of,
The sterilization components are as follows: 5 portions of,
The stabilizer component: 7 parts by weight, and
deionized water: and 76 parts.
The preparation method of the preservative composition comprises the following steps:
adding 3 parts of sodium citrate, 2 parts of sodium nitrate, 2 parts of disodium ethylene diamine tetraacetate and 27 parts of deionized water into a reaction kettle, opening a temperature control switch of the reaction kettle, and stirring for dissolving;
preparing 3 parts of potassium sorbate, 2 parts of 2-methyl-1, 2-phenylpropthiazolinone and 16 parts of deionized water into a solution A;
preparing 12 parts of 2-methyl-4-isothiazolin-3-one and 33 parts of deionized water into a solution B;
and when the temperature of the reaction kettle is 40 ℃, simultaneously dropwise adding the solution A and the solution B at a constant speed for 3 hours, and after the dropwise adding is finished, keeping the temperature of 40 ℃ for 2 hours to obtain the preservative composition with the mass concentration of 24%.
Example 6
This embodiment is a preservative composition, which comprises, by weight:
the antibacterial component: 15 portions of,
The sterilization components are as follows: 5 portions of,
The stabilizer component: 10 parts and
deionized water: 70 parts of (A).
The preparation method of the preservative composition comprises the following steps:
adding 4 parts of sodium citrate, 3 parts of sodium nitrate, 3 parts of disodium ethylene diamine tetraacetate and 24 parts of deionized water into a reaction kettle, opening a temperature control switch of the reaction kettle, and stirring for dissolving;
preparing 2 parts of potassium sorbate, 3 parts of 2-methyl-1, 2-phenylpropthiazolinone and 16 parts of deionized water into a solution A;
preparing 15 parts of 2-methyl-4-isothiazolin-3-one and 30 parts of deionized water into a solution B;
when the temperature of the reaction kettle reaches 40 ℃, simultaneously dropwise adding the solution A and the solution B at a constant speed for 2.5 hours, and after finishing dropwise adding, keeping the temperature at 40 ℃ for 2 hours to obtain the preservative composition with the mass concentration of 30%.
Further, the preservative compositions of examples 1 to 6 were tested for effects in conjunction with examples 1 to 2 below:
test example 1 evaluation of toxicity
At present, preservative composition products in the market usually generate certain formaldehyde, but the formaldehyde has certain toxicity and can cause harm to human health and environment.
Firstly, standard formaldehyde solutions with several concentrations of 0ug/ml, 0.1ug/ml, 0.2ug/ml, 0.6ug/ml, 1ug/ml, 1.6ug/ml, 3.2ug/ml and 6.4ug/ml are set, and the absorbance values sequentially corresponding to the several concentrations are respectively 0, 0.016, 0.03, 0.094, 0.16, 0.254, 0.512 and 1.011 through a spectrophotometer by taking deionized water as a reference. Further, a formaldehyde standard curve is established through the standard formaldehyde solutions with the concentrations and the absorbance values corresponding to the standard formaldehyde solutions with the concentrations, so that the regression equation of the formaldehyde concentration and the absorbance value is obtained, wherein y is 0.1584x, and R is2＝1。
Next, the toxicity of the preservative compositions of the present invention was evaluated by comparing the formaldehyde content of commercially available preservative compositions (HF-01), preservative compositions (HF-02), preservative compositions (E6), and the preservative compositions of examples 1-6 herein, wherein each set of samples was run in duplicate to ensure that the data was reliable. Weighing 2g of each of a preservative composition (HF-01), a preservative composition (HF-02), a preservative composition (E6) and the preservative compositions of examples 1 to 6 in the application, dissolving the preservative composition in 50ml of deionized water, obtaining an initial sample after the preservative composition is completely dissolved in the deionized water, then weighing 10ml of a preservative composition solution in a 50ml volumetric flask, fixing the volume to 50ml, obtaining a sample to be detected, taking the deionized water as a reference for correcting the absorbance value, measuring the spectrophotometric value of the sample to be detected, obtaining the formaldehyde concentration through a formaldehyde standard curve, multiplying the obtained formaldehyde concentration by 50ml to obtain the mass of formaldehyde in the 50ml volumetric flask, namely the mass of the formaldehyde in the sample to be detected, wherein the mass of the formaldehyde is the mass of the formaldehyde contained after the 10ml of the preservative composition solution is weighed in the 50ml volumetric flask, fixing the volume to 50ml, therefore, the above is multiplied by 5 to obtain the quality of formaldehyde in the preservative composition solution. The results obtained are shown in table 1:
table 1 preservative composition toxicity evaluation results
As can be seen from the above, the six embodiments of the present invention do not generate formaldehyde, thereby causing harm to human health and environmental health, and the toxicity of the preservative composition in the present application is lower than that of the products in the market.
Test example 2 evaluation of anticorrosive Properties
In order to make the preservative composition with different component combinations in each embodiment be a single variable in the effect test, and the solid content of the preservative composition in the concrete water reducing agent added with the preservative composition in each embodiment needs to be consistent, in the embodiment of the invention, a standard solid content of the concrete water reducing agent is firstly set, and on the premise of knowing the mass concentration of the preservative composition in each embodiment, the invention obtains the doping amount of the water reducing agent in each embodiment, which is doped into the concrete water reducing agent, through the standard solid content of the preservative composition in the concrete water reducing agent, and the specific doping amount of the preservative composition in each embodiment of the invention is as follows.
The amount of the preservative composition in example 1 added to the concrete water reducing agent was 0.10%, the mixture was stirred uniformly, the concrete water reducing agent containing the preservative composition was placed in an open container, and the container was stored in an open environment at 50 ℃.
The amount of the preservative composition in example 2 added to the concrete water reducing agent was 0.07%, the mixture was stirred uniformly, the concrete water reducing agent containing the preservative composition was placed in an open container, and was stored in an open environment at 50 ℃.
The amount of the preservative composition in example 3 added to the concrete water reducing agent was 0.06%, the mixture was stirred uniformly, the concrete water reducing agent containing the preservative composition was placed in an open container, and the container was stored in an open environment at 50 ℃.
The amount of the preservative composition in example 4 added to the concrete water reducing agent was 0.05%, the mixture was stirred uniformly, the concrete water reducing agent containing the preservative composition was placed in an open container, and the container was stored in an open environment at 50 ℃.
The amount of the preservative composition in example 5 added to the concrete water reducing agent was 0.04%, the mixture was stirred uniformly, the concrete water reducing agent containing the preservative composition was placed in an open container, and the container was stored in an open environment at 50 ℃.
The amount of the preservative composition in example 6 added to the concrete water-reducing agent was 0.03%, the mixture was stirred uniformly, the concrete water-reducing agent containing the preservative composition was placed in an open container, and the container was stored in an open environment at 50 ℃.
In addition, the concrete water reducing agent containing the solid content of the standard value set forth above without adding the preservative composition of the present invention was used as a blank control in each of the above examples.
The results are shown in table 1:
table 1 preservative composition efficacy test results
From the above results, it is understood that the preservative composition according to each example of the present invention can keep the concrete water-reducing agent from being deteriorated for a long period of time, and can preserve the concrete water-reducing agent for a long period of time.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the present specification and directly/indirectly applied to other related technical fields within the spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. A preservative composition, characterized in that it comprises, in parts by weight:
the antibacterial component: 5 to 15 parts of,
The sterilization components are as follows: 1 to 5 parts of,
The stabilizer component: 4 to 10 parts, and
water: 70-90 parts.
2. The preservative composition according to claim 1, wherein the preservative composition has a pH of 2 to 7.
3. The preservative composition according to claim 1, wherein the bacteriostatic component is 2-methyl-4-isothiazolin-3-one.
4. The preservative composition of claim 1, wherein the stabilizer component is one or more of sodium citrate, sodium nitrate, and disodium edetate.
5. The preservative composition according to claim 1, wherein the bactericidal component is one or more of potassium sorbate and 2-methyl-1, 2-phenylpropthiazolinone.
6. The preservative composition according to claim 1, wherein the preservative composition is present in a concentration of 10 to 30% by mass.
7. A method of preparing a preservative composition comprising the steps of:
mixing 4-10 parts of stabilizer component, 1-5 parts of sterilization component, 5-15 parts of bacteriostasis component and 70-90 parts of water, stirring and dissolving to obtain the preservative composition.
8. The method of claim 7, comprising the steps of:
adding 4-10 parts of the stabilizer component and 20-30 parts of water into a reaction kettle, and stirring for dissolving;
preparing 1-5 parts of the sterilization component and 15-20 parts of water into a solution A;
preparing 5-15 parts of the bacteriostatic component and 35-40 parts of water into a solution B;
and dripping the solution A and the solution B into a reaction kettle to obtain the product, namely the preservative composition.
9. Use of the preservative composition according to any one of claims 1 to 6 for the preparation of water-reducing agents for concrete.
10. A water reducing agent for concrete, characterized by comprising the preservative composition according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011143505.5A CN112608055A (en) | 2020-10-23 | 2020-10-23 | Preservative composition and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011143505.5A CN112608055A (en) | 2020-10-23 | 2020-10-23 | Preservative composition and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112608055A true CN112608055A (en) | 2021-04-06 |
Family
ID=75225685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011143505.5A Pending CN112608055A (en) | 2020-10-23 | 2020-10-23 | Preservative composition and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112608055A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115872658A (en) * | 2022-12-23 | 2023-03-31 | 科之杰新材料集团有限公司 | Composite preservative for polycarboxylate superplasticizer and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4454146A (en) * | 1982-05-14 | 1984-06-12 | Lever Brothers Company | Synergistic preservative compositions |
| CN103073221A (en) * | 2013-01-22 | 2013-05-01 | 科之杰新材料集团有限公司 | Preservative suitable for low-concentration polycarboxylic acid water reducing agent |
| CN105347726A (en) * | 2015-10-16 | 2016-02-24 | 同济大学 | Anticorrosive composite polycarboxylate superplasticizer with high slump loss resistance, and preparation method and application thereof |
| CN109704625A (en) * | 2018-12-19 | 2019-05-03 | 贵州科之杰新材料有限公司 | A kind of concrete admixture preservative and preparation method thereof |
| CN111087653A (en) * | 2019-11-13 | 2020-05-01 | 嘉兴学院 | Preservative for waterborne polyurethane emulsion and preparation method thereof |
-
2020
- 2020-10-23 CN CN202011143505.5A patent/CN112608055A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4454146A (en) * | 1982-05-14 | 1984-06-12 | Lever Brothers Company | Synergistic preservative compositions |
| CN103073221A (en) * | 2013-01-22 | 2013-05-01 | 科之杰新材料集团有限公司 | Preservative suitable for low-concentration polycarboxylic acid water reducing agent |
| CN105347726A (en) * | 2015-10-16 | 2016-02-24 | 同济大学 | Anticorrosive composite polycarboxylate superplasticizer with high slump loss resistance, and preparation method and application thereof |
| CN109704625A (en) * | 2018-12-19 | 2019-05-03 | 贵州科之杰新材料有限公司 | A kind of concrete admixture preservative and preparation method thereof |
| CN111087653A (en) * | 2019-11-13 | 2020-05-01 | 嘉兴学院 | Preservative for waterborne polyurethane emulsion and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115872658A (en) * | 2022-12-23 | 2023-03-31 | 科之杰新材料集团有限公司 | Composite preservative for polycarboxylate superplasticizer and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107098484B (en) | Wastewater treatment agent and preparation method thereof | |
| CN105347726B (en) | A kind of anti-corrosion high-thin arch dam polycarboxylate composite water reducing agent and preparation method and application | |
| CN106495294B (en) | A kind of corrosion-mitigation scale-inhibition fungicide and preparation method thereof | |
| CN112608055A (en) | Preservative composition and preparation method and application thereof | |
| CN104604934B (en) | A kind of compound iodine disinfectant and its preparation method and application | |
| CN108943242A (en) | Rubber wood timber and mould proof Anti- tarnishing processing method, inorganic agent and preparation method thereof | |
| CN105565700B (en) | A kind of strong waterproofing agent of morning for Portland cement | |
| CN107304079B (en) | Corrosion-inhibition, scale-inhibition and sterilization composition and application thereof | |
| CN103636601B (en) | O-phthalaldehyde disinfectant and preparation method thereof | |
| CN102206067A (en) | Mildewproof joint sealant | |
| CN104478285A (en) | Activation enhancer applied to cement concrete as well as application and preparation method of activation enhancer | |
| CN105567191B (en) | A kind of micro- silicon suspension of Weak Gels, preparation method and application | |
| CN103467656A (en) | Environment-friendly type terminating agent for styrene butadiene rubber emulsion polymerization and preparation method thereof | |
| CN108844903B (en) | Method for measuring ammonia excretion rate of fishes in alkaline water environment | |
| CN104957137B (en) | Antiseptic composition containing DBNPA and preparation method thereof | |
| CN101571531B (en) | Method for the detection of cyanide ion | |
| CN111202084B (en) | Preparation method of penoxsulam-polyvinyl alcohol hydrogel composite preparation | |
| Davis | Studies on the Phenoldisulfonic Acid Method for Determining Nitrates in Soils. | |
| CN100506770C (en) | Color stabilizer for phenol and alkylphenol and its use | |
| US2752281A (en) | Iodine dissolved in aqueous solutions of maleic anhydride-vinyl ether copolymers | |
| US10597352B1 (en) | Stable alkyl benzidine composition and methods of making and using same | |
| CN102783483B (en) | 3-isothiazolinone composition | |
| CN114105520A (en) | Compound concrete external water aqua preservative | |
| JP4211660B2 (en) | Residual chlorine measurement composition | |
| CN105601157B (en) | A kind of strong waterproofing agent of morning for Portland cement |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210406 |
|
| RJ01 | Rejection of invention patent application after publication |