CN110564369A - Deicing and snow melting agent with low concrete corrosion rate and low freezing point and preparation method thereof - Google Patents
Deicing and snow melting agent with low concrete corrosion rate and low freezing point and preparation method thereof Download PDFInfo
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- CN110564369A CN110564369A CN201910892774.2A CN201910892774A CN110564369A CN 110564369 A CN110564369 A CN 110564369A CN 201910892774 A CN201910892774 A CN 201910892774A CN 110564369 A CN110564369 A CN 110564369A
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- melting agent
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
- C09K3/185—Thawing materials
Abstract
the invention belongs to the technical field of pavement snow melting agents, and particularly relates to an ice and snow removing agent with low concrete corrosion rate and low freezing point, and further discloses a preparation method thereof. The deicing and snow melting agent with low concrete corrosion rate and low freezing point is prepared by compounding glucose fermentation liquor, ethylene glycol monomethyl ether, potassium acetate, dioctyl phthalate, potassium tartrate, epichlorohydrin, low-density polyethylene and chloride salt serving as raw materials. The deicing and snow melting agent has a good snow melting effect, the freezing point reaches below-35 ℃ without freezing, and the deicing and snow melting agent is more suitable for long-acting deicing in cold regions, particularly has extremely low corrosion performance on concrete pavements, and can be suitable for deicing and snow melting of the concrete pavements.
Description
Technical Field
The invention belongs to the technical field of pavement snow melting agents, and particularly relates to an ice and snow removing agent with low concrete corrosion rate and low freezing point, and further discloses a preparation method thereof.
Background
The concrete is one of the most important civil engineering materials in the present generation, and is an artificial stone material prepared by mixing a cementing material, granular aggregate (also called aggregate), water, an additive and an admixture which are added if necessary according to a certain proportion, uniformly stirring, densely molding, curing and hardening. The concrete has the characteristics of rich raw materials, low price and simple production process, so that the consumption of the concrete is increased more and more. Meanwhile, the concrete also has the characteristics of high compressive strength, good durability, wide strength grade range and the like. These characteristics make its application range very extensive, and the highway has a great proportion at present is concrete pavement.
the snow-melting agent is used for melting snow and ice as the name suggests, is also called deicing salt and road antifreezing agent, is mainly used for airport, highway, square, parking lot, railway, city street and the like in winter to melt snow and ice and prevent freezing, and some snow-melting agents can also be used as a quick melting agent for melting ice and snow in winter construction of building engineering, an antifreezing additive and the like. This requires that the snow-melting agent not be harmful to roads, concrete members, bridge facilities, nor flowers, trees, crops, animals and humans.
At present, snow melting agents developed in China are various and are divided into solid preparations and liquid preparations according to physical states; the composition is divided into an inorganic preparation and a mixed preparation which simultaneously contains inorganic matters and organic matters; they can be classified into snow-melting agents for urban roads and snow-melting agents for bridges, airports, and the like, depending on their uses. At present, the snow melting agent commonly found in the market is mainly composed of the following two types: one kind of snow-melting agent is an organic snow-melting agent taking potassium acetate as a main component, the snow-melting agent has good snow-melting effect and basically has no corrosion damage, but the price of the product is too high and the product is generally only used in important places such as airports and the like; the other type is an inorganic snow-melting agent mainly taking 'chloride' as a main component, such as chloride salts of sodium chloride, calcium chloride, magnesium chloride, potassium chloride and the like, so the inorganic snow-melting agent is generally called 'deicing salt', has the advantages of low price, only equal to 1/10 of that of an organic snow-melting agent, and has excellent effects of reducing the freezing point and preventing freezing, but has the remarkable defects that salt solutions are directly contacted with a concrete pavement for a long time, so that the concrete is easy to corrode and deteriorate and is damaged, the corrosion to large-scale public infrastructure is serious, a great amount of green vegetation can die after long-term use, the serious corrosion damage to the concrete pavement of roads and bridges is caused, and rivers and underground water are polluted as snow doped with the snow-melting agent is melted and permeates into the ground surface, and the ecological environment is seriously damaged. Therefore, it is urgent to develop an ice and snow remover having a low concrete corrosion rate and a low freezing point.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide an ice and snow remover with low concrete corrosion rate and low freezing point, so as to solve the problem that the ice and snow remover has high corrosivity on a concrete pavement in the prior art;
The second technical problem to be solved by the present invention is to provide a method for preparing the ice and snow remover.
In order to solve the technical problems, the invention provides an ice and snow removing agent with low concrete corrosion rate and low freezing point, which is prepared from the following raw materials in parts by weight:
specifically, the glucose fermentation broth is fermentation broth obtained by taking glucose as a substrate and fermenting under the action of yeast.
Specifically, the content of ethanol in the glucose fermentation liquor is controlled to be 10-14 wt%, and the content of residual sugar is controlled to be 1-3 wt%.
specifically, the organic acid potassium salt comprises potassium formate and/or potassium acetate.
Specifically, the chloride salt comprises magnesium chloride and/or anhydrous calcium chloride.
The invention also discloses a method for preparing the deicing and snow-melting agent with low concrete corrosion rate and low freezing point, which comprises the following steps:
(1) Taking a selected amount of the glucose fermentation liquor, adding the organic acid potassium salt, the chloride salt and the potassium tartrate in the formula amount, fully stirring until the organic acid potassium salt, the chloride salt and the potassium tartrate are completely dissolved, adding the ethylene glycol monomethyl ether in the formula amount, and fully and uniformly mixing to obtain a snow-melting agent I component for later use;
(2) Mixing epoxy chloropropane, dioctyl phthalate and low-density polyethylene according to the formula amount until the components are fully dissolved to obtain a snow-melting agent II component for later use;
(3) And uniformly mixing the snow-melting agent I component and the snow-melting agent II component, and discharging to obtain the required ice and snow removing agent.
Specifically, the step (1) further comprises the step of raising the temperature to 60-70 ℃ to completely dissolve all the components.
Specifically, the step (2) further comprises the step of raising the temperature to 70-80 ℃ to fully dissolve the low-density polyethylene and the dioctyl phthalate in the epichlorohydrin.
specifically, in the step (3), the step of uniformly mixing the snow-melting agent I component and the snow-melting agent II component is performed at room temperature.
specifically, the step (1) further comprises a step of preparing the glucose fermentation liquor, namely dissolving glucose in water, mixing the glucose with yeast to form a fermentation base, fermenting for 12-16 hours to obtain fermentation liquor with the ethanol content of 2-7 wt%, and concentrating the fermentation liquor until the ethanol content in the fermentation liquor reaches 10-14 wt% and the residual sugar content reaches 1-3 wt% for later use.
The deicing and snow melting agent with low concrete corrosion rate and low freezing point is prepared by compounding glucose fermentation liquor, ethylene glycol monomethyl ether, potassium acetate, dioctyl phthalate, potassium tartrate, epichlorohydrin, low-density polyethylene and chloride salt serving as raw materials. The residual sugar in the glucose fermentation liquor can increase the friction force of a road surface and increase the driving safety, the ethanol in the fermentation liquor can obviously reduce the freezing point of the snow-melting agent, and the freezing point of the final snow-melting agent product can reach below-35 ℃ without freezing by matching with ethylene glycol monomethyl ether, potassium acetate and chloride; the used potassium tartrate mainly plays a role in inhibiting corrosion, and mainly plays a role in slowing down carbon steel corrosion and concrete corrosion; the dioctyl phthalate and the low-density polyethylene are dissolved in the epichlorohydrin to form an organic phase, and as the density of the epichlorohydrin phase is higher than that of the water phase, the epichlorohydrin phase sinks at the bottom after being sprayed on the pavement and can be directly contacted with the concrete pavement, the low-density polyethylene and the dioctyl phthalate in the epichlorohydrin phase can form a uniform film to be adsorbed on the surface of the concrete, the water phase containing chloride and other salts is isolated for a long time, the concrete is prevented from being corroded by inorganic substances such as salt, alkali and the like, and the final product has almost no corrosion to the concrete after being sprayed on the pavement, thereby having important anticorrosion significance on the basis of ensuring the snow melting performance.
Detailed Description
The following examples of the invention:
The low-density polyethylene is called LDPE for short, and is an injection-grade standard material which is purchased from Yanshan petrochemical company Limited;
the organic acid potassium salt comprises potassium formate and/or potassium acetate, and the purity of the organic acid potassium salt is more than 97%;
The chloride comprises magnesium chloride and/or anhydrous calcium chloride, and the purity of the chloride is over 95 percent;
The preparation method of the glucose fermentation liquid comprises the following steps: firstly, dissolving glucose in water, mixing the glucose with yeast to form a fermentation base, then adding the fermentation base into a fermentation tank, fermenting for 12-16 hours under the action of a shaking table to obtain fermentation liquor taking 2-7% of ethanol as a main product, then concentrating the fermentation liquor through a pure water reverse osmosis membrane, separating water from the fermentation liquor, and stopping concentration when the ethanol content in the fermentation liquor reaches 10-14% and the residual sugar mass content reaches 1-3%.
example 1
The deicing and snow melting agent with low concrete corrosion rate and low freezing point comprises the following preparation raw materials:
The preparation method of the deicing and snow melting agent with low concrete corrosion rate and low freezing point comprises the following steps:
(1) Weighing the glucose fermentation liquor according to a selected formula, adding organic acid potassium salt, chloride salt and potassium tartrate according to the formula, heating to 60-70 ℃, stirring for 1-3h, adding ethylene glycol monomethyl ether after all the components are dissolved, uniformly stirring, and cooling to room temperature to obtain a snow-melting agent I component for later use;
(2) Weighing epichlorohydrin, dioctyl phthalate and low-density polyethylene according to a selected formula, heating to 70-80 ℃, fully stirring for 1-2h to fully dissolve the low-density polyethylene and the dioctyl phthalate in the epichlorohydrin, and cooling to room temperature to obtain a snow-melting agent II component for later use;
(3) and uniformly stirring the snow-melting agent I component and the snow-melting agent II component at room temperature, and discharging to obtain the required ice and snow removing agent.
This example produced the ice and snow remover as a colorless or pale yellow viscous liquid in appearance.
example 2
The deicing and snow melting agent with low concrete corrosion rate and low freezing point comprises the following preparation raw materials:
the preparation method of the deicing and snow melting agent with low concrete corrosion rate and low freezing point comprises the following steps:
(1) Weighing the glucose fermentation liquor according to a selected formula, adding organic acid potassium salt, chloride salt and potassium tartrate according to the formula, heating to 60-70 ℃, stirring for 1-3h, adding ethylene glycol monomethyl ether after all the components are dissolved, uniformly stirring, and cooling to room temperature to obtain a snow-melting agent I component for later use;
(2) Weighing epichlorohydrin, dioctyl phthalate and low-density polyethylene according to a selected formula, heating to 70-80 ℃, fully stirring for 1-2h to fully dissolve the low-density polyethylene and the dioctyl phthalate in the epichlorohydrin, and cooling to room temperature to obtain a snow-melting agent II component for later use;
(3) And uniformly stirring the snow-melting agent I component and the snow-melting agent II component at room temperature, and discharging to obtain the required ice and snow removing agent.
this example produced the ice and snow remover as a colorless or pale yellow viscous liquid in appearance.
Example 3
The deicing and snow melting agent with low concrete corrosion rate and low freezing point comprises the following preparation raw materials:
the preparation method of the deicing and snow melting agent with low concrete corrosion rate and low freezing point comprises the following steps:
(1) weighing the glucose fermentation liquor according to a selected formula, adding organic acid potassium salt, chloride salt and potassium tartrate according to the formula, heating to 60-70 ℃, stirring for 1-3h, adding ethylene glycol monomethyl ether after all the components are dissolved, uniformly stirring, and cooling to room temperature to obtain a snow-melting agent I component for later use;
(2) weighing epichlorohydrin, dioctyl phthalate and low-density polyethylene according to a selected formula, heating to 70-80 ℃, fully stirring for 1-2h to fully dissolve the low-density polyethylene and the dioctyl phthalate in the epichlorohydrin, and cooling to room temperature to obtain a snow-melting agent II component for later use;
(3) And uniformly stirring the snow-melting agent I component and the snow-melting agent II component at room temperature, and discharging to obtain the required ice and snow removing agent.
this example produced the ice and snow remover as a colorless or pale yellow viscous liquid in appearance.
example 4
The deicing and snow melting agent with low concrete corrosion rate and low freezing point comprises the following preparation raw materials:
The preparation method of the deicing and snow melting agent with low concrete corrosion rate and low freezing point comprises the following steps:
(1) Weighing the glucose fermentation liquor according to a selected formula, adding organic acid potassium salt, chloride salt and potassium tartrate according to the formula, heating to 60-70 ℃, stirring for 1-3h, adding ethylene glycol monomethyl ether after all the components are dissolved, uniformly stirring, and cooling to room temperature to obtain a snow-melting agent I component for later use;
(2) Weighing epichlorohydrin, dioctyl phthalate and low-density polyethylene according to a selected formula, heating to 70-80 ℃, fully stirring for 1-2h to fully dissolve the low-density polyethylene and the dioctyl phthalate in the epichlorohydrin, and cooling to room temperature to obtain a snow-melting agent II component for later use;
(3) And uniformly stirring the snow-melting agent I component and the snow-melting agent II component at room temperature, and discharging to obtain the required ice and snow removing agent.
This example produced the ice and snow remover as a colorless or pale yellow viscous liquid in appearance.
example 5
The deicing and snow melting agent with low concrete corrosion rate and low freezing point comprises the following preparation raw materials:
The preparation method of the deicing and snow melting agent with low concrete corrosion rate and low freezing point comprises the following steps:
(1) weighing the glucose fermentation liquor according to a selected formula, adding organic acid potassium salt, chloride salt and potassium tartrate according to the formula, heating to 60-70 ℃, stirring for 1-3h, adding ethylene glycol monomethyl ether after all the components are dissolved, uniformly stirring, and cooling to room temperature to obtain a snow-melting agent I component for later use;
(2) weighing epichlorohydrin, dioctyl phthalate and low-density polyethylene according to a selected formula, heating to 70-80 ℃, fully stirring for 1-2h to fully dissolve the low-density polyethylene and the dioctyl phthalate in the epichlorohydrin, and cooling to room temperature to obtain a snow-melting agent II component for later use;
(3) and uniformly stirring the snow-melting agent I component and the snow-melting agent II component at room temperature, and discharging to obtain the required ice and snow removing agent.
This example produced the ice and snow remover as a colorless or pale yellow viscous liquid in appearance.
Comparative example 1
The raw materials and the preparation method of the deicing and snow melting agent in the comparative example are the same as those in example 3, and the difference is only that the raw materials do not contain the glucose fermentation broth.
Comparative example 2
The raw materials for preparing the deicing and snow melting agent and the preparation method of the deicing and snow melting agent in the comparative example are the same as those in example 3, and only the difference is that the raw materials for preparing the deicing and snow melting agent do not contain the ethylene glycol monomethyl ether.
comparative example 3
The raw materials for preparing the deicing and snow melting agent and the preparation method of the deicing and snow melting agent in the comparative example are the same as those in example 3, and only the difference is that the raw materials for preparing the deicing and snow melting agent do not contain the organic acid potassium salt.
Comparative example 4
the raw materials for preparing the deicing and snow melting agent and the preparation method of the deicing and snow melting agent in the comparative example are the same as those in example 3, and only the difference is that the raw materials for preparing the deicing and snow melting agent do not contain the chloride salt.
Comparative example 5
The raw materials for preparing the deicing and snow melting agent and the preparation method of the deicing and snow melting agent in the comparative example are the same as those in example 3, and only the difference is that the raw materials for preparing the deicing and snow melting agent do not contain the epichlorohydrin.
comparative example 6
The raw materials for preparing the deicing and snow melting agent and the preparation method of the deicing and snow melting agent in the comparative example are the same as those in example 3, and only the difference is that the raw materials for preparing the deicing and snow melting agent do not contain the dioctyl phthalate.
Comparative example 7
the raw materials for preparing the deicing and snow melting agent and the preparation method of the deicing and snow melting agent in the comparative example are the same as those in example 3, and only the raw materials for preparing the deicing and snow melting agent do not contain the low-density polyethylene.
Examples of the experiments
the snow melting agents prepared in the above examples 1 to 5 and comparative examples 1 to 7 were respectively tested for properties such as freezing point, snow and ice melting capability, and concrete corrosion rate, and specific determination indexes and methods were determined according to GB/T23851-2009 "road deicing and snow melting agent"; but the results are shown in table 1 below.
TABLE 1 Performance test results of the deicing and snow-melting agent
The data in the above table show that the deicing and snow melting agent has a good snow melting effect, the freezing point reaches below-35 ℃ without freezing, the deicing and snow melting agent is more suitable for long-acting deicing in cold regions, particularly has extremely low corrosion performance on concrete pavements, and can be suitable for deicing and snow melting of the concrete pavements.
The deicing and snow melting agent of the invention brings some defects to the snow melting agent product when the related components are lacked, such as the proposal of comparative examples 1-4, the lack of the components can cause the ice point to rise, the snow and ice melting capability to decline and the performance of the snow melting agent to be poor; however, as in the solutions of comparative examples 5-7, the lack of organic concrete-protecting components can cause salt to penetrate into the surface of the concrete and corrode, which results in a significant increase in the corrosion rate of the concrete and a serious damage to the concrete pavement.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. The deicing and snow melting agent with low concrete corrosion rate and low freezing point is characterized by comprising the following raw materials in parts by weight:
2. The deicing and snow melting agent with low concrete corrosion rate and low freezing point as claimed in claim 1, wherein the glucose fermentation broth is a fermentation broth obtained by fermenting glucose serving as a matrix under the action of yeast.
3. The deicing and snow melting agent with low concrete corrosion rate and low freezing point as claimed in claim 2, wherein the content of ethanol in the glucose fermentation liquid is controlled to be 10-14 wt%, and the content of residual sugar is controlled to be 1-3 wt%.
4. A low concrete corrosion rate, low freezing point deicing and snow melting agent as claimed in any one of claims 1-3, wherein the organic acid potassium salt comprises potassium formate and/or potassium acetate.
5. A low concrete corrosion rate, low freezing point ice and snow remover as claimed in any one of claims 1 to 4, wherein said chloride salt comprises magnesium chloride and/or anhydrous calcium chloride.
6. A method for preparing the low concrete corrosion rate and low freezing point deicing and snow melting agent as claimed in any one of claims 1 to 5, which comprises the following steps:
(1) taking a selected amount of the glucose fermentation liquor, adding the organic acid potassium salt, the chloride salt and the potassium tartrate in the formula amount, fully stirring until the organic acid potassium salt, the chloride salt and the potassium tartrate are completely dissolved, adding the ethylene glycol monomethyl ether in the formula amount, and fully and uniformly mixing to obtain a snow-melting agent I component for later use;
(2) mixing epoxy chloropropane, dioctyl phthalate and low-density polyethylene according to the formula amount until the components are fully dissolved to obtain a snow-melting agent II component for later use;
(3) and uniformly mixing the snow-melting agent I component and the snow-melting agent II component, and discharging to obtain the required ice and snow removing agent.
7. The method for preparing the deicing and snow melting agent with low concrete corrosion rate and low freezing point according to claim 6, characterized in that the step (1) further comprises the step of heating to 60-70 ℃ to completely dissolve all components.
8. the method for preparing a low concrete corrosion rate and low freezing point deicing and snow melting agent according to claim 6 or 7, characterized in that the step (2) further comprises the step of raising the temperature to 70-80 ℃ to fully dissolve the low density polyethylene and the dioctyl phthalate in the epichlorohydrin.
9. A method for preparing a deicing and snow-melting agent with low concrete corrosion rate and low freezing point according to any one of claims 6-8, wherein in the step (3), the step of uniformly mixing the snow-melting agent component I and the snow-melting agent component II is carried out at room temperature.
10. The method for preparing an ice and snow remover with low concrete corrosion rate and low freezing point according to any one of claims 6-9, wherein the step (1) further comprises the step of preparing the glucose fermentation broth, i.e. dissolving glucose in water, mixing with yeast to form a fermentation base, fermenting for 12-16h to obtain a fermentation broth with 2-7 wt% of ethanol content, and concentrating the fermentation broth until the ethanol content in the fermentation broth reaches 10-14 wt% and the residual sugar content reaches 1-3 wt% for later use.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113088256A (en) * | 2021-04-08 | 2021-07-09 | 梁泽太 | Novel effective corrosion-free environment-friendly snow removing agent |
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Application publication date: 20191213 |