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A hybrid slow-release snow-melting and de-icing material and its preparation method and application method

A snow melting and slow release technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of metal erosion pressure limitation, increase manufacturing difficulty, increase environmental pressure, etc., to improve snow melting and deicing efficiency and reduce impact , the effect of reducing damage

Active Publication Date: 2022-03-22
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method involves accurate weighing and compounding of various materials, which increases the difficulty of manufacturing
CN104893666A discloses an inorganic salt-releasing material and its preparation method and application. It mixes lightly calcined magnesia, saturated magnesium chloride solution, salt and coating additives uniformly, and then dries and breaks them to obtain a solid gel material. The obtained solid gel The salt-releasing material can be obtained after the material and the modifier are evenly mixed. This salt-releasing material can be used as a snow-melting agent, but the wet coating-dry modification process uses a large amount of solvent, and the product needs to be dried again , and subsequent activation and modification of the sample by ball milling will increase the cost. At the same time, wet processing will also produce a large amount of salty wastewater, increasing environmental pressure
[0003] It can be seen that although the prior art uses ionic buffer systems and inorganic gelling systems as snow melting and deicing materials, the erosion of metal objects and the pressure caused by the environment limit their application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Put 250.38g of NaCl into a pulverizer, pass through a 20-mesh sieve after crushing, add 25.36g of carboxymethyl cellulose, and mix evenly in a high-speed mechanical agitator to obtain a snow-melting salt mixture, which is sealed and packaged for use.

[0045] CaSO 4 2H 2 O 321.13g of gypsum powder with a mass content of not less than 80% was put into a pulverizer and crushed, passed through a 20-mesh sieve, and CaHPO was added 4 2.63 g was uniformly mixed in high-speed mechanical stirring to obtain a gelling material mixture, which was sealed and packaged for use.

[0046] Take 0.5g of each of the two mixed materials, mix them evenly, and after keeping the temperature at -15°C for 3 hours, apply them directly on an ice cube of 5cm×3cm×1cm weighing about 15g.

[0047] As a comparison, 1g of NaCl was also placed on ice cubes of the same environment and the same specifications, and the rest were tested in accordance with the relevant provisions of the national standard ...

Embodiment 2

[0049] Put 250.38g of NaCl into a pulverizer, pass through a 20-mesh sieve after crushing, add 25.36g of carboxymethylcellulose, and mix evenly in a high-speed mechanical agitator to obtain a mixture of snow-melting salt, which is sealed and packaged for use.

[0050] CaSO 4 2H 2 O 321.13g of gypsum powder with a mass content of not less than 80% is put into a pulverizer and crushed, passed through a 20-mesh sieve, and CaHPO is added 4 2.63 g was uniformly mixed in high-speed mechanical stirring to obtain a gelling material mixture, which was sealed and packaged for use.

[0051] Take 0.5g of the two mixed materials and mix them with 0.5g of granite chips evenly. After keeping the temperature at -15°C for 3 hours, apply them on an ice cube of 5cm×3cm×1cm weighing about 15g.

[0052] As a comparison, 1g of NaCl was also placed on ice cubes of the same environment and the same specifications, and the rest were tested in accordance with the relevant provisions of the national ...

Embodiment 3

[0054] NaCl 301.52g and CaCl 2 2H 2 O 50.93g were put into the pulverizer together, crushed and passed through a 20-mesh sieve, 31.96g of carboxymethylcellulose was added, and mixed evenly in high-speed mechanical stirring to obtain a mixture of snow-melting salt, which was sealed and packaged for use.

[0055] CaSO 4 2H 2 O 559.35g of gypsum powder with a mass content of not less than 80% and slaked lime powder with a mass content of not less than 85% of CaO 59.06g, put them together in a pulverizer and crush them, pass through a 20-mesh sieve, and add KH 2 PO 4 37.63 g was uniformly mixed in high-speed mechanical stirring to obtain a gelling material mixture, which was sealed and packaged for use.

[0056] Take 0.5g of the two mixed materials and mix them with 0.5g of granite chips evenly. After keeping the temperature at -15°C for 3 hours, apply them on an ice cube of 5cm×3cm×1cm weighing about 15g.

[0057] As a comparison, 1g of NaCl was also placed on ice cubes of t...

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PUM

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Abstract

The invention discloses a mixed slow-release snow-melting and de-icing material and its preparation method and application method. Every 100 parts by weight of the slow-release snow-melting and de-icing material includes: 30-65 parts of ionic snow-melting active materials, 25 parts of inorganic gelling materials ‑60 parts, gel stability enhancer 2‑8 parts, ion buffer stabilizer 0.3‑5 parts. Compared with the traditional ionic deicing agent, the snowmelting and deicing material of the present application reduces the amount of snowmelting and deicing electrolyte (i.e. ionic snowmelting active material) by forming a stable sol system with high ionic strength on the road surface , not only improves the efficiency of snow melting and deicing, but also enhances the skid resistance of the road surface.

Description

technical field [0001] The invention belongs to the field of snow-melting and de-icing materials, in particular to a mixed slow-release snow-melting and de-icing material and its preparation method and application method. Background technique [0002] At present, there are various types of snow melting and deicing materials developed at home and abroad, including inorganic salt deicing agents, organic salt deicing agents and composite deicing agents. Due to cost reasons, most of the domestic use of inorganic salt deicing agents, especially the use of chlorine salt deicing agents still account for more than 90%, including sodium chloride, calcium chloride, magnesium chloride and so on. Chloride-salt-type snow-melting materials have high ionic strength, can greatly lower the freezing point, not only have good snow-melting effects, but also are cheap. However, the chloride salt deicing agent has a significant erosive effect on metal objects such as road, bridge and culvert con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/18
Inventor 朱燕超钱苗苗王晓峰
Owner JILIN UNIV
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