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| Application of Thermal Insulation Coatings to High-power Heavy-equipment |
| Received:April 01, 2021 Revised:May 29, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2021.11.010 |
| KeyWord:thermal insulation coating room-temperature curing functional filler low thermal conductivity engine cabin and cockpit |
| Author | Institution |
| ZHANG Jing-yuan |
Southwest Institute of Technology and Engineering, Chongqing , China |
| QIU Wei |
Southwest Institute of Technology and Engineering, Chongqing , China |
| FU Yang-fan |
Southwest Institute of Technology and Engineering, Chongqing , China |
| ZHONG Jun |
Southwest Institute of Technology and Engineering, Chongqing , China |
| WU Xiu-ying |
Southwest Institute of Technology and Engineering, Chongqing , China |
| LIU Zheng-tao |
Southwest Institute of Technology and Engineering, Chongqing , China |
| SUN Li-hua |
Northern Hua’an Indusial Group, Qiqihaer , China |
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| Abstract: |
| To develop a kind of functional coating with low thermal conductivity, and study the effect of preventing from heat transfer between engine cabin and cockpit of a heavy vehicle with the coating material. The high-elasticity polyester polyol and the low thermal conductivity functional filler were researched as main objects, the effects of the ratio of polyester polyol resin to curing agent were studied, and low thermal conductivity functional filler to film-forming and two kinds of hollow microsphere were blended on the thermal conductivity, adhesion and elongation at break of the film to determine the best formula of barrier heat insulation coating.The self-made heat insulation test device was used to test the thermal insulation performance of the coating. Experimental evaluation showed that paiting film was cured at room temperature by using polyisocyanate as curing agent, the optimum mole ratio was determined that hydroxy (—OH) to polyisocyanate (—NOC) is 0.8~1.0 and the weight ratio of functional filler to film-forming was 1.5~2.0. Performance testing of paint film showed that the adhesion was not less than 4 MPa, and the elongation at break was not less than 50%, furthermore, thermal conductivity of film was less than 0.06 W/(m.K), and the density is only 0.5 g/cm3; When one side of paint film was kept for 2 h under the condition of 120 ℃, the temperature of another side that didn’t touch heat source was less than 45 ℃ and the temperature difference reached 75 ℃.The barrier heat insulation coating developed in this paper has excellent heat insulation performance. When the coating was painted between the powering section and the driving compartment, the vehicle continued to work for 3 h and surface temperature of the driving cab was below 38 ℃, and the film thickness was only 1.5 mm~2.0 mm. |
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