CN109777359A - A kind of environment-friendly snowmelt agent and preparation method thereof - Google Patents
A kind of environment-friendly snowmelt agent and preparation method thereof Download PDFInfo
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- CN109777359A CN109777359A CN201910223570.XA CN201910223570A CN109777359A CN 109777359 A CN109777359 A CN 109777359A CN 201910223570 A CN201910223570 A CN 201910223570A CN 109777359 A CN109777359 A CN 109777359A
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Abstract
The invention discloses a kind of environment-friendly snowmelt agents and preparation method thereof, by weight, including following component: 85~90 parts of formates, 8~10 parts of polylactic acid, 3~5 parts of carbon nanotube, 2~3 parts of chitosan, 1~2 part of metaphosphate, 3~5 parts of sodium gluconate；Wherein the metaphosphate is one of calgon, potassium metaphosphate or calcium metaphosphate.The beneficial effect of deicing salt disclosed by the invention is: deicing or snow melting ability is strong, and corrosion-free effect, soil, water body will not be damaged after thawing, opposite there are also certain nourishing effects, the secondary pollution that will not cause city is a kind of eco-friendly type deicing salt.
Description
Technical field
The present invention relates to a kind of deicing salt and preparation method thereof more particularly to a kind of environment-friendly snowmelt agent and its preparation sides
Method belongs to deicing salt technical field.
Background technique
The snowfall and icing in winter often bring inconvenience to city and communications and transportation, and easily cause traffic accident, especially
It is on a highway, it is more likely that so that highway is forced closing because of accumulated snow or icing and stop transport, cause greatly economic damage
It loses.Snow removing mode is broadly divided into snow removal with machine and chemistry snow removing two ways at present.Wherein, snow removal with machine maneuverability, speed
Fastly, the deficiencies of applied widely, but that there are removing rates is poor, road surface easy to damage；The snow-removing method of Chemical deicers can make up machinery
The deficiency of snow removing is a kind of effective deicing or snow melting means, it using irreplaceable.
Deicing salt also known as changes cryosel, road antifreezing agent, is mainly used for winter airport, highway, square, parking lot, railway, city
Snow removing and antifreeze effect are played in city street etc., and the type and amount of application of deicing salt generally combine the gas of this area according to different regions
Time feature, snowfall integrate determination.The use of domestic deicing salt mainly includes mainly chlorination based on chloride salt deicing salt
Sodium, calcium chloride, potassium chloride etc., the snow-broth after such deicing salt snow melt penetrate into soil, can make the salinization of soil, generating plate
Knot, causes physiological drought, leads to roadside plant mortality, and cause seriously to pollute to groundwater resources.The way of escape is avenged simultaneously
There is white trace and salt dirt in face, causes secondary pollution to city, the departments such as gardens, municipal administration maintenance cost is caused to increase year by year.
Formates is a kind of novel organic salt deicing salt, and ice-melt speed is fast, and ability is strong, uses rear degradable, biochemistry consumption
Oxygen amount is low, and effect on environment is small, is a kind of eco-friendly type deicing salt, but formates has one to metal especially light metal
Fixed corrosivity, it is necessary to corrosion inhibitor appropriate be added to be eliminated.Inorganic phosphate is generallyd use in the prior art as anti-corruption
Agent is lost, but the obvious deficiency of inorganic phosphate is to form calcium scale with the calcium ion in water, needs to be used in conjunction with antisludging agent, and
And the phosphate is discharged into water the growth that can promote algae and water, be easy to cause the eutrophication of water quality.
Summary of the invention
The present invention provides a kind of environment-friendly snowmelt agent and preparation method thereof for deficiency present in formates deicing salt.
The technical scheme to solve the above technical problems is that
A kind of environment-friendly snowmelt agent, by weight, including following component: 85~90 parts of formates, polylactic acid 8~10
Part, 3~5 parts of carbon nanotube, 2~3 parts of chitosan, 1~2 part of metaphosphate, 3~5 parts of sodium gluconate；
Wherein the metaphosphate is one of calgon, potassium metaphosphate or calcium metaphosphate.
Based on the above technical solution, the present invention can also be improved as follows.
Further, the formates is potassium formate or sodium formate.
Further, the carbon nanotube is single-walled carbon nanotube or multi-walled carbon nanotube.
The effect of each component is as follows in above-mentioned environment-friendly snowmelt agent:
1) melt agent based on formates, with good water solubility, and ice water freezing point is lower, therefore has very strong snow melt
Change ice ability, can melt a bit first on ice sheet, and then melts ice sheet bottom, while biology can be carried out in a natural environment
Degradation；
2) polylactic acid is wetting flux, and due to snow-broth meeting slant acidity, water can occur in the snow-broth of slant acidity for polylactic acid
Solution constantly release generates lactic acid, and the generation of lactic acid further promotes the hydrolysis of polylactic acid, and lactic acid equally has good water solubility,
The lactic acid collaboration formates of generation further decreases the freezing point of ice water jointly, improves water-soluble；
3) metaphosphate and sodium gluconate are corrosion inhibiter, and metaphosphate and sodium gluconate are weak acid strong alkali salt,
Have a degree of hydrolysis in the snow-broth environment of slant acidity and generate alkali, it is thus possible to a certain extent to snow-broth it is acid into
Row buffering weakens formates to the corrosiveness of light metal, and sodium gluconate, calgon and potassium metaphosphate are food
Common food additives in industry, calcium metaphosphate are the citrate acid soluble phosphatic fertilizers that a kind of phosphorus content is high, fertilizer efficiency is lasting, particularly suitable for
Acid soil, therefore using will not only be damaged to soil after deicing salt of the invention, certain nourishing is also had on the contrary
Effect, since phosphatic dosage is fewer, snow-broth will not cause the eutrophication of water body after being discharged into water.
4) carbon nanotube plays the effect of a kind of similar " carrier " with chitosan, and carbon nano tube surface has many officials
Can group, have the effects of very more hydroxyl groups, these groups pass through Electrostatic Absorption, Van der Waals force in the structure of chitosan
Power adsorbs the other components such as formates, lactic acid, so that the components such as formates, lactic acid are adsorbed on the surface of chitosan and carbon nanotube
Spherical and dotted action site is formed, so that the distribution of active component is more concentrated, snow melt during snow melt
Ice effect is more preferable.
The beneficial effect of deicing salt disclosed by the invention is: deicing or snow melting ability is strong, and corrosion-free effect, will not after thawing
Soil, water body are damaged, opposite there are also certain nourishing effects, will not cause the secondary pollution in city, be a kind of lifes
State environment friendly type snow melt agent.
The preparation method of above-mentioned deicing salt is also claimed in the present invention, includes the following steps:
(1) by 85~90 parts of formates, 8~10 parts of polylactic acid, 3~5 parts of carbon nanotube, 2~3 parts of chitosan, metaphosphoric acid
1~2 part of salt, 3~5 parts of sodium gluconate, the metaphosphate be calgon, potassium metaphosphate or calcium metaphosphate, will be above-mentioned
It is thoroughly mixed in raw material investment blender, makes its mixture that is uniformly dispersed to obtain；
(2) mixture obtained in step (1) is put into pelletizer, of 2~6mm of diameter is made in extrusion granulation
Grain；
(3) drying is to get environment-friendly snowmelt agent.
Further, the pressure control of extrusion granulation process is 10 kilograms.
Further, the temperature of drying is 80~120 DEG C.
Specific embodiment
Principles and features of the present invention are described below in conjunction with example, the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
Embodiment 1:
A kind of environment-friendly snowmelt agent, by weight, including following component:
85 parts of potassium formate, 8 parts of polylactic acid, 5 parts of single-walled carbon nanotube, 3 parts of chitosan, 2 parts of calgon, gluconic acid
3 parts of sodium；
Embodiment 2:
A kind of environment-friendly snowmelt agent, by weight, including following component:
90 parts of sodium formate, 10 parts of polylactic acid, 3 parts of multi-walled carbon nanotube, 2 parts of chitosan, 2 parts of potassium metaphosphate, gluconic acid
5 parts of sodium；
Embodiment 3:
A kind of environment-friendly snowmelt agent, by weight, including following component:
88 parts of potassium formate, 9 parts of polylactic acid, 4 parts of single-walled carbon nanotube, 3 parts of chitosan, 1 part of calcium metaphosphate, sodium gluconate
4 parts；
The preparation method of above-mentioned deicing salt, includes the following steps:
(1) by formates, polylactic acid, carbon nanotube, chitosan, metaphosphate, sodium gluconate, above-mentioned raw materials are put into
It is thoroughly mixed in blender, makes its mixture that is uniformly dispersed to obtain；
(2) mixture obtained in step (1) is put into pelletizer, of 2~6mm of diameter is made in extrusion granulation
Grain, it is 10 kilograms that extrusion granulation controls pressure in the process；
(3) it dries at 80~120 DEG C to get environment-friendly snowmelt agent.
Environment-friendly snowmelt agent obtained in Examples 1 to 3 is subjected to the test of properties, process and result are as follows:
1, snow melt ability measures:
Deicing or snow melting ability is carried out to three embodiments of the present invention according to GB/T23851-2009 " road deicing deicing salt "
Measurement test, test method are as follows:
1. 100ml water is added to porcelain crucible, be put into cryostat, under the conditions of 10 DEG C of ﹣, system, at ice cube after, take
The water and ice of porcelain crucible outer wall are dried out, are weighed rapidly, are accurate to 0.1g；
2. deicing salt of the present invention to be configured to the aqueous solution of 0.2g/ml concentration, 25ml is taken to pour into the porcelain crucible equipped with ice cube
In, porcelain crucible under the conditions of 10 DEG C of ﹣, takes out after 30 minutes in cryostat, topples over its liquid immediately, and weighs porcelain earthenware rapidly
The quality of crucible and remaining ice cube；
3. doing sodium chloride deicing salt comparative test under equal conditions, calculating deicing salt of the present invention is melted with sodium chloride deicing salt
Snow ability ratio K, calculation formula are K=(m0-m1) × 100/ (m01-m11), and wherein m0 and m1 is that deicing salt is not added respectively
With the quality (g) of porcelain crucible and ice cube after addition deicing salt of the present invention, m01 and m11 are that deicing salt and addition chlorine are not added respectively
The quality (g) of porcelain crucible and ice cube after change sodium deicing salt.Experimental result is shown in Table 1.
The snow melt aptitude tests result of 1 Examples 1 to 3 deicing salt of table
| Serial number | Type | Snow melt ability ratio K (%) |
| 1 | Embodiment 1 | 155 |
| 2 | Embodiment 2 | 152 |
| 3 | Embodiment 3 | 165 |
As seen from Table 1, the snow melt ability of environment-friendly snowmelt agent provided by the invention is compared with sodium chloride,
50% is at least improved, snow melt ability is much better than villaumite Snow Agent.
2, to the determination of corrosion of carbon steel:
It is measured referring to " water treatment agent corrosion inhibition measurement-rotary hanging plate method " (GB/T18175-2000), and observes carbon
Surface topography before and after steel lacing film corrosion pickling.
Its rate of corrosion are as follows: X=[8670 × (m-m0) × 10]/(s × ρ × t)
In formula: X is rate of corrosion, mm/a；S is strip product, this test piece surface area is 28cm2；ρ is that test piece is close
Degree, 7.85g/cm3；T is test period 72h；M is that forward backward averaging weight loss, g are tested in test piece caused by test solution；M0 is to steam
Forward backward averaging weight loss, g are tested in test piece caused by distilled water；8760 be 1 year hourage, h/a.
3, the relatively aggrieved rate of vegetable seeds
The relatively aggrieved rate measuring method of vegetable seeds in reference deicing salt Beijing provincial standard (DB11T161-2012),
Corn and soybean and the common crop seed of mung bean are chosen, every group 100, is placed in (24 ± 1) DEG C illumination box, observes its 12d
Germination, distilled water compare, and test is repeated 4 times, and take average germination percentage F, calculate relatively aggrieved rate (S): S (%)=(F couples
According to-F prepare liquid)/F control
Using sodium chloride as reference examples, the test result such as table of the relatively aggrieved rate of the determination of corrosion and vegetable seeds of carbon steel
Shown in 2.
The test result of the relatively aggrieved rate of determination of corrosion and vegetable seeds of 2 carbon steel of table
| Test item | Embodiment 1 | Embodiment 2 | Embodiment 3 | Reference examples |
| Rate of corrosion mm/a | 0.001 | 0.001 | 0.002 | 0.325 |
| The relatively aggrieved rate of corn seed | 10.5 | 11.3 | 9.9 | 92.2 |
| The relatively aggrieved rate of soya seeds | 11.2 | 9.8 | 12.1 | 95.5 |
| The relatively aggrieved rate of mung bean seed | 5.2 | 4.8 | 5.0 | 92.3 |
As seen from Table 2, deicing salt of the invention is compared with sodium chloride, much to the corrosivity of carbon steel
Lower than sodium chloride, almost without what corrosivity, the relatively aggrieved rate of corn and soybean and mung bean seed is also far below sodium chloride,
Show that deicing salt corrosiveness of the invention is weak, and soil, plant will not be damaged and damaged substantially.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, all spirit and original in invention
Within then, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of environment-friendly snowmelt agent, by weight, including following component:
85~90 parts of formates, 8~10 parts of polylactic acid, 3~5 parts of carbon nanotube, 2~3 parts of chitosan, 1~2 part of metaphosphate,
3~5 parts of sodium gluconate；
Wherein the metaphosphate is one of calgon, potassium metaphosphate or calcium metaphosphate.
2. environment-friendly snowmelt agent according to claim 1, which is characterized in that the formates is potassium formate or sodium formate.
3. environment-friendly snowmelt agent according to claim 1 or 2, which is characterized in that the carbon nanotube is single
Pipe or multi-walled carbon nanotube.
4. a kind of preparation method of such as described in any item environment-friendly snowmelt agents of claims 1 to 3 kind, which is characterized in that including
Following steps:
(1) weigh by weight 85~90 parts of formates, 8~10 parts of polylactic acid, 3~5 parts of carbon nanotube, 2~3 parts of chitosan,
1~2 part of metaphosphate, 3~5 parts of sodium gluconate, the metaphosphate be calgon, potassium metaphosphate or calcium metaphosphate,
Above-mentioned raw materials are put into blender and are thoroughly mixed, its mixture that is uniformly dispersed to obtain is made；
(2) mixture obtained in step (1) is put into pelletizer, the particle of 2~6mm of diameter is made in extrusion granulation；
(3) drying is to get environment-friendly snowmelt agent.
5. the preparation method according to claim 4, which is characterized in that the pressure control of extrusion granulation process is 10 kilograms.
6. preparation method according to claim 4 or 5, which is characterized in that the temperature of drying is 80~120 DEG C.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111205766A (en) * | 2020-03-31 | 2020-05-29 | 国网河南省电力公司镇平县供电公司 | Environment-friendly self-ice-melting composition for overhead transmission line and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111205766A (en) * | 2020-03-31 | 2020-05-29 | 国网河南省电力公司镇平县供电公司 | Environment-friendly self-ice-melting composition for overhead transmission line and preparation method thereof |
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