Microwave sensitive coating materials and equipment for snow removal(PDF)
长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]
- Issue:
- 2018年05期
- Page:
- 49-57
- Research Field:
- 道路工程
- Publishing date:
Info
- Title:
- Microwave sensitive coating materials and equipment for snow removal
- Author(s):
- WANG Jianying1; 2; WANG Xuancang1; DING Longting1; FU Linjie1
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- Keywords:
- road engineering; microwave heating; snow removal; absorption mechanism; coating; portable microwave deicing vehicle
- PACS:
- -
- DOI:
- -
- Abstract:
- In order to effectively snow removal in cold regions in an environmentally and economically friendly manner, and to overcome the shortcomings of existing traditional methods of snow removal, a microwave deicing coating technology was proposed. On the basis of the absorbtion mechanism and influencing factors of the microwave absorbing material, hydroxy iron powder (RW), hydroxy iron powder (YW1), ferroferric oxide, alumina, and expanded graphite were preferred as the microwave sensitive coating absorbing materials. The microwave sensitive coating materials were tested by melting ice. By comparing the temperature rise from different sets of tests, the ability of different coating materials to absorb microwave heat and melt thick ice was analyzed. Ferroferric oxide, RW, and expanded graphite were used as coating materials in coated specimen heating tests and ice melting tests, respectively, and the ability of coated asphalt concrete pavement to absorb microwaves and melt ice was studied. After the coated asphalt concrete specimens were prepared, a layer of 5cmthick ice was frozen, and the difference in temperature rise was used to directly compare their ability to absorb microwaves, Considering factors such as microwave deicing efficiency and cost, expanded graphite was proposed to use as the microwave sensitive coating material. In addition, the technical parameters of frequency, power, and magnetron array of the deicing microwave equipment were studied. A portable microwave deicing vehicle was developed based on this, and a microwave heating test using a portable microwave deicer was conducted on site. The results show that ferroferric oxide, RW, and expanded graphite have better ability of absorbing microwaves and melting ice. The temperature increases by 40.2 ℃ for expanded graphite in 60 s， whereas it increases by 8.4 ℃ for the ferroferric oxide. The use of expanded graphite as a coating material, combination with a portable microwave deicing vehicle has a good deicing effect. It can provide a basis for the development of largescale microwave deicing equipment. 3 tabs, 10 figs, 28 refs.
Last Update: 2018-10-23