CN108485604B - Environment-friendly and non-corrosive road snow melting agent - Google Patents
Environment-friendly and non-corrosive road snow melting agent Download PDFInfo
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- CN108485604B CN108485604B CN201810320346.8A CN201810320346A CN108485604B CN 108485604 B CN108485604 B CN 108485604B CN 201810320346 A CN201810320346 A CN 201810320346A CN 108485604 B CN108485604 B CN 108485604B
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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
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Abstract
The invention discloses an environment-friendly and non-corrosive road snow-melting agent, which consists of the following raw materials in parts by weight, 10-50 parts of potassium carbonate and 5-20 parts of urea,5-30 parts of 1, 3-propanediol. The snow melting agent can be sprayed on the road surface in advance before ice and snow arrive, so that the freezing point of ice and snow on the road is effectively delayed; the snow melting agent provided by the invention directly melts ice and snow in a pre-wetting mode, so that the snow melting time is shortened; the snow-melting agent takes potassium carbonate inorganic salt as a main snow-melting component, and does not contain Cl of corrosive metal‑The corrosion of the snow-melting agent to metal and concrete is effectively prevented; the snow melting agent has a low freezing point, ensures that ice and snow are melted and then flow away in liquid water so as not to freeze on a road, and ensures the driving safety.
Description
Technical Field
The invention relates to a snow-melting agent, in particular to an environment-friendly and non-corrosive road snow-melting agent.
Background
In recent years, due to the continuous deterioration of the environment, the phenomena of snowfall and road icing occur at times in winter, and the phenomena become the maximum black spots which cause serious traffic jam in cities and cause road traffic accidents. Particularly, in cold rainy and snowy weather, because the water area is below the bridge surface or the bridge is suspended, the temperature of the bridge surface is usually lower than that of a road, the bridge surface is easy to freeze, the friction coefficient of the road is obviously reduced, and road traffic accidents are easily caused.
The complex weather conditions seriously affect the conditions of the road surface, the conditions of snow accumulation, frost, thin ice and the like occur occasionally, great risks are brought to the running of vehicles, the traffic smoothness in the city is seriously affected, the running safety is affected, and even the serious loss of national property and the life and property of people is caused. Therefore, the active anti-icing and dust removal is realized by adopting advanced technical means, the urban traffic safety under the severe ice and snow weather is ensured, and particularly the traffic safety and smoothness of key nodes such as urban overpasses, ramp-up and ramp-down ramps and the like are ensured, so that the practical problem which needs to be solved urgently is solved. At present, the snow melting and deicing measures for the fields of expressways, airport runways, bridges, urban roads and the like mainly comprise mechanical snow removal, manual snow removal and snow removal by snow melting agents. Mechanical snow removal is relatively inefficient in snow removal speed due to the relative scarcity of large snow removal equipment. When snow is removed manually, safety accidents often happen, and meanwhile, the labor intensity is high, and the traffic operation order and speed are affected. Therefore, the snow removing method of the snow melting agent which saves time and labor and can reduce accidental injury accidents is selected at home and abroad.
The snow-melting agent is used for melting snow and ice as the name suggests, and is mainly used for removing snow and preventing freezing in airports, highways, squares, parking railways, city streets and the like in winter. At present, snow-melting agents used in China are inorganic snow-melting agents taking 'chloride' as a main component, such as sodium chloride, calcium chloride, magnesium chloride, potassium chloride and the like. Its advantages are low cost (1/10), high effect on snow thawing, and high corrosion to large public infrastructure. The snow-melting agent which we commonly use is of this type, and sodium chloride (i.e. industrial salt) is the most used. The other type 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 is too high, and the organic snow-melting agent is generally used in important places such as airports and the like.
The use of solid snow-melting agents also has drawbacks, mainly manifested in the following aspects: firstly, when the solid snow-melting agent is spread for operation, the road surface is slippery, and the solid snow-melting agent is ejected out of the road surface and splashed into the road shoulder, so that the waste is great; secondly, when the dry snow-melting agent is scattered on the snow, heat and moisture need to be absorbed, and if sufficient heat and moisture are not absorbed, the solid snow-melting agent does not react chemically; thirdly, the solid snow-melting agent needs longer time for melting the ice and snow, especially under the climate condition with lower temperature.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the invention provides an environment-friendly and non-corrosive road snow-melting agent which has the characteristics of good snow-melting and deicing capabilities and small corrosivity on metal and concrete.
In order to solve the technical problems, the environment-friendly and non-corrosive road snow-melting agent comprises the following raw materials in parts by weight: 10-50 parts of potassium carbonate, 5-20 parts of urea and 5-30 parts of 1, 3-propylene glycol.
Preferably, the environment-friendly and non-corrosive road snow-melting agent further comprises the following raw materials, by weight, 5-30 parts of potassium acetate, 1-15 parts of dicyclohexylamine nitrite, 1-15 parts of sodium tetraborate, 1-10 parts of diethylene glycol, 1-15 parts of phytic acid, 0.1-10 parts of sodium lactate and 0.1-5 parts of oxaloacetic acid.
Preferably, the environment-friendly and non-corrosive road snow-melting agent consists of the following raw materials, by weight, 40 parts of potassium carbonate, 20 parts of urea, 20 parts of 1, 3-propylene glycol, 10 parts of potassium acetate, 5 parts of dicyclohexylamine nitrite, 5 parts of sodium tetraborate, 8 parts of diethylene glycol, 10 parts of phytic acid, 5 parts of sodium lactate and 2 parts of oxaloacetic acid.
The invention has the beneficial effects that: the environment-friendly and non-corrosive road snow-melting agent is a liquid snow-melting agent, can be sprayed on the road surface in advance before ice and snow arrive, and effectively delays the freezing point of the ice and snow on the road; the snow melting agent provided by the invention directly melts ice and snow in a pre-wetting mode, so that the snow melting time is shortened; the snow-melting agent takes potassium carbonate inorganic salt as a main snow-melting component, and does not contain Cl of corrosive metal-The corrosion of the snow-melting agent to metal and concrete and the damage of water containing the snow-melting agent to vegetation after the ice and snow are melted are effectively prevented; the addition of urea and 1, 3-propanediol into potassium carbonate makes the snow-melting agent of the invention have a low freezing point, ensures that the ice and snow can flow away as liquid water after being melted and can not freeze on the road, and ensures the driving safety.
Detailed Description
The invention prepares the road snow-melting agent with environment protection and no corrosiveness in the following steps:
(1) putting 1, 3-propylene glycol and diethylene glycol into a mixing tank with stirring, and uniformly stirring at room temperature and the stirring speed of 180 r/min;
(2) adding potassium carbonate, potassium acetate and urea into a mixing tank under stirring, stirring for 15min at room temperature, and stirring at the rotating speed of 180 r/min;
(3) adding dicyclohexylamine nitrite, sodium tetraborate, oxaloacetic acid, sodium lactate and phytic acid into a mixing tank under stirring, stirring at room temperature for 30min at the stirring speed of 300r/min, and discharging after uniform stirring to obtain the environment-friendly and non-corrosive road snow-melting agent;
(4) when in use, distilled water is added into the environment-friendly and non-corrosive road snow-melting agent to prepare a snow-melting agent solution with a certain concentration, and the solution is uniformly mixed for later use.
Examples 6-8 also used the above method, and the corresponding starting materials contained in examples 6-8 were added in each step, and the starting materials not referred to in examples 6-8 were not added.
The following groups of examples were prepared according to the above-mentioned method, and the components and contents of each group of examples are shown in table 1, and the properties of the liquid road snow-melting agent obtained by each group of examples are shown in table 2.
Watch 1
| Raw materials | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | Example 7 | Example 8 |
| Potassium carbonate | 20g | 30g | 40g | 35g | 25g | 20g | 10g | 30g |
| Potassium acetate | 5g | 12g | 10g | 12g | 25g | 0g | 0g | 0g |
| 1,3 propanediol | 10g | 15g | 20g | 11g | 15g | 10g | 10g | 30g |
| Diethylene glycol | 4g | 5g | 8g | 10g | 6g | 0g | 0g | 0g |
| Urea | 10g | 15g | 20g | 5g | 15g | 10g | 10g | 15g |
| Oxaloacetic acid | 2g | 1g | 2g | 1g | 3g | 0g | 0g | 0g |
| Dicyclohexylamine nitrite | 5g | 5g | 5g | 9g | 3g | 0g | 0g | 0g |
| Sodium tetraborate | 5g | 10g | 5g | 9g | 5g | 0g | 0g | 0g |
| Sodium lactate | 5g | 5g | 5g | 10g | 9g | 0g | 0g | 0g |
| Phytic acid | 10g | 10g | 10g | 12g | 12g | 0g | 0g | 0g |
The invention has the performance test of environmental protection and non-corrosive road snow melting agent:
1. the snow-melting and ice-melting abilities and the freezing points of the environmentally-friendly and non-corrosive road snow-melting agents obtained in examples 1 to 8 were tested according to the national standard GBT23851-2009, and the results are shown in table two.
(1) Snow and ice melting capability
Taking two ice trays A and B with the same specification, respectively adding 100ml of water, placing into a cryostat at-10 deg.C, freezing into ice blocks, weighing the mass m of the ice trays A and B0And m ″0(ii) a Taking 10g of snow-melting agent, adding 25ml of distilled water, and uniformly mixing to prepare a snow-melting agent solution; taking 10g of sodium chloride, adding 25ml of distilled water, and uniformly mixing to prepare a sodium chloride solution; rapidly pouring the solution of the snow melting agent into the ice tray A containing ice blocks, then placing the ice tray A back into a low-temperature incubator at minus 10 ℃, taking out the ice tray after 0.5h, immediately pouring the liquid of the ice tray A, and rapidly weighing the mass m of the ice tray A containing the residual ice blocks1(ii) a Rapidly pouring sodium chloride solution into ice tray B filled with ice cubes, then placing the ice tray B back into a low-temperature incubator at-10 ℃, taking out the ice tray after 0.5h, immediately pouring the liquid of the ice tray B, and rapidly weighing the mass m' of the ice tray B filled with the remaining ice cubes1(ii) a Chinese character 'shi' for snow-melting and ice-thawingThe mother ω represents, the snow-melting and ice-melting ability value is expressed in%, ω% = (m)0- m1)/( m´0- m´1)*100。
(2) Freezing point test
Adding 1000g of distilled water into 200g of the snow-melting agent, and uniformly mixing to prepare a snow-melting agent solution; and inserting a thermometer into the snow-melting agent solution, placing the snow-melting agent solution in a low-temperature incubator, recording the change of the temperature of the snow-melting agent solution along with time, drawing a temperature-time curve, wherein the corresponding temperature at the gentle part of the curve is the freezing point temperature of the snow-melting agent at the concentration.
(3) Amount of snow-melting agent used: when the depth of the accumulated snow on the ground is less than 3 cm, the spraying amount of the snow-melting agent per square meter of road is less than or equal to 200 mL; when the depth of the accumulated snow on the ground is 3-5 cm, the spraying amount of the snow-melting agent per square meter of road is 200-500 mL; when the depth of the snow on the ground is 5-10 cm, the spraying amount of the snow-melting agent per square meter of road is 500-1000 mL.
Watch two
| Examples | Snow and ice melting ability (relative to snow and ice melting ability of sodium chloride)% | Freezing point/° C (200g/L water) |
| Example 1 | 196 | -23.9 |
| Example 2 | 194 | -23.5 |
| Example 3 | 204 | -24.2 |
| Example 4 | 190 | -22.7 |
| Example 5 | 197 | -23.4 |
| Example 6 | 195 | -22.6 |
| Example 7 | 193 | -23.1 |
| Example 8 | 198 | -22.2 |
2. The invention relates to a corrosion test of an environment-friendly and non-corrosive road snow-melting agent on a concrete pavement
The concrete corrosion rate of the snow-melting agent obtained in examples 1 to 8 was measured by referring to national standard GBT23851-2009, and the results are shown in table three, wherein the concrete relative corrosion rate in table three is the ratio of the corrosion rate of the snow-melting agent obtained in examples 1 to 8 of the present invention to the concrete test block to the corrosion rate of the sodium chloride solution to the concrete test block.
And (3) taking 8 beakers of 200mL, adding 40g of the snow-melting agent obtained in the examples 1 to 8 respectively, adding 100mL of water into the 8 beakers, uniformly mixing to obtain a snow-melting agent solution, soaking the statically-maintained concrete test block (100 x 100 mm) into the prepared snow-melting agent solution for 14 days, replacing the snow-melting agent solution every 7 days, and weighing the mass of the concrete test block before and after soaking.
Preparing a sodium chloride solution by the same method, soaking the concrete test block in the sodium chloride solution for 14 days, replacing the sodium chloride solution every 7 days, and weighing the mass of the concrete test block before and after soaking.
Watch III
| Examples | Concrete corrosion rate% | Concrete relative corrosion ratio% |
| Sodium chloride solution | 4.96 | |
| Example 1 | 0.12 | 2.42 |
| Example 2 | 0.10 | 2.02 |
| Example 3 | 0.08 | 1.61 |
| Example 4 | 0.10 | 2.02 |
| Example 5 | 0.12 | 2.42 |
| Example 6 | 0.13 | 2.62 |
| Example 7 | 0.14 | 2.82 |
| Example 8 | 0.15 | 3.02 |
3. Corrosion test of carbon steel sheet by environment-friendly and non-corrosive road snow-melting agent
The carbon steel corrosion rates of the snow-melting agents obtained in examples 1 to 8 were measured with reference to national standard GBT 23851-2009.
And (3) taking 8 beakers of 200mL, respectively adding 40g of the snow-melting agent obtained in the examples 1-8, then adding 100mL of water into the 8 beakers, uniformly mixing to obtain a snow-melting agent solution, respectively soaking carbon steel sheets of 50mm x 2mm in the prepared snow-melting agent solution for 180 days, wherein the surfaces of the soaked test blocks are not obviously corroded.
Preparing a sodium chloride solution by the same method, soaking a carbon steel sheet with the thickness of 50mm x 2mm in the sodium chloride solution for 7 days, and basically corroding the carbon steel sheet completely after soaking for 180 days.
Claims (2)
1. An environment-friendly and non-corrosive road snow-melting agent is characterized in that: the feed comprises the following raw materials in parts by weight: 10-50 parts of potassium carbonate, 5-20 parts of urea, 5-30 parts of 1, 3-propylene glycol, 5-30 parts of potassium acetate, 1-15 parts of dicyclohexylamine nitrite, 1-15 parts of sodium tetraborate, 1-10 parts of diethylene glycol, 1-15 parts of phytic acid, 0.1-10 parts of sodium lactate and 0.1-5 parts of oxaloacetic acid.
2. The environmentally friendly, non-corrosive road snow melting agent of claim 1, wherein: the feed comprises the following raw materials in parts by weight: 40 parts of potassium carbonate, 20 parts of urea, 20 parts of 1, 3-propylene glycol, 10 parts of potassium acetate, 5 parts of dicyclohexylamine nitrite, 5 parts of sodium tetraborate, 8 parts of diethylene glycol, 10 parts of phytic acid, 5 parts of sodium lactate and 2 parts of oxaloacetic acid.
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| CN201810320346.8A CN108485604B (en) | 2018-04-11 | 2018-04-11 | Environment-friendly and non-corrosive road snow melting agent |
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| CN108485604B true CN108485604B (en) | 2020-10-02 |
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| CN109385252A (en) * | 2018-12-03 | 2019-02-26 | 煤炭科学技术研究院有限公司 | A kind of composition of novel non-chlorine environmental-protecting type deicing salt and preparation |
| CN111763496A (en) * | 2020-07-24 | 2020-10-13 | 中南安全环境技术研究院股份有限公司 | Environment-friendly novel chlorine-free liquid snow-melting agent and preparation method thereof |
| CN114292625B (en) * | 2021-12-31 | 2022-09-06 | 吉林省交通科学研究所 | Road snow-melting agent and preparation method and application thereof |
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| CN1648192A (en) * | 2003-12-05 | 2005-08-03 | 张洋 | Corrosion free compound snow thawing agent |
| CN102408872A (en) * | 2011-09-20 | 2012-04-11 | 武汉理工大学 | Salt-storing deicing material special for asphalt pavement and preparation method thereof |
| CN102899004A (en) * | 2012-09-21 | 2013-01-30 | 湖北省高速公路实业开发有限公司 | Green environment-friendly snow-melting liquid and preparation method thereof |
| CN103289646A (en) * | 2013-07-01 | 2013-09-11 | 句容宁武高新技术发展有限公司 | Environment-friendly snow/ice melting composition |
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- 2018-04-11 CN CN201810320346.8A patent/CN108485604B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1648192A (en) * | 2003-12-05 | 2005-08-03 | 张洋 | Corrosion free compound snow thawing agent |
| CN102408872A (en) * | 2011-09-20 | 2012-04-11 | 武汉理工大学 | Salt-storing deicing material special for asphalt pavement and preparation method thereof |
| CN102899004A (en) * | 2012-09-21 | 2013-01-30 | 湖北省高速公路实业开发有限公司 | Green environment-friendly snow-melting liquid and preparation method thereof |
| CN103289646A (en) * | 2013-07-01 | 2013-09-11 | 句容宁武高新技术发展有限公司 | Environment-friendly snow/ice melting composition |
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