Key Laboratory of Protective Materials

Tongshan, China

Key Laboratory of Protective Materials

Tongshan, China
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Xie W.-H.,Key Laboratory of Protective Materials | Xie W.-H.,College of Logistics | Jia F.-H.,Key Laboratory of Protective Materials | Jia F.-H.,College of Logistics | Li S.-C.,Jiangsu University
Binggong Xuebao/Acta Armamentarii | Year: 2014

The infrared contrast between airport support equipment and its working background is studied, and an infrared camouflage scheme for the front part of a car is made. After a series of experiment on structure and materials, a new kind of heat insulation blanket is developed, which comprises two 3 mm thick ceramic fiber layers and a 3 mm thick phase-change paraffin wax capsule layer sandwiched in them. To verify its camouflage effect, field experiment is conducted with a thermal imager, and numerical simulation is made by using ANSYS. It turns out that this heat insulation blanket can be used effectively to control the temperature of equipment and background, which meets the infrared radiation camouflage specifications.

Xie W.,Key Laboratory of Protective Materials | Xie W.,PLA Xuzhou Air force College | Du H.,Key Laboratory of Protective Materials | Du H.,PLA Xuzhou Air force College | Li S.,Xuzhou Normal University
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | Year: 2011

The polyurethane-aluminum foam was fabricated by filling the open-cell aluminum foam with polyurethane. Making use of the Hopkinson pressure bar, the dynamic compression experiments have been carried out to reinforced composites of three-dimensional continuous network composed of aluminum foam and polyurethane under different relative density, strain rate and polyurethane content. The experiment results indicate that the yield strength and the compression strain of polyurethane-aluminum foam are significantly improved, compared with the aluminum foam under the identical strain rate and relative density, and its stressstrain curve displays some obvious fluctuations. With the increase of the strain, the stress also increases and when the strain reaches a certain value, the stress corresponding to the polyurethane-aluminum foam is higher and its energy absorption is more than that of the aluminum foam. Furthermore, when the strain rate increases, polyurethane-aluminum foam presents an obvious effect of strain rate.

Xie W.-H.,Key Laboratory of Protective Materials | Zhou N.,PLA Xuzhou Air force College | Li S.-C.,Xuzhou Normal University | Bao G.,PLA Xuzhou Air force College
Advanced Materials Research | Year: 2012

In this experiment, nano-CaCO3, nano-SiO2, nano-TiO2 and nano-ZnO were chosen and added into waterborne camouflage coating respectively to make nano-material camouflage coatings. Both the surface tension and the contact angle of the coating (on steel plate and on concrete blocks) were measured by the OCA15+ video optics contact angle admeasuring apparatus; the nano-material's influence on the interfacial properties of camouflage coating were studied based on its changing concentration. The experiment indicates that the relationship between the concentration of nano-material and the surface tension of the coating coincides with the Szyszkowski formula, but only when the concentration is relatively low; nano-SiO 2 has the best effect in improving the interfacial properties of camouflage coatings. It also proves that adding proper nano-material is an efficient way to improve the coating's durability. © (2012) Trans Tech Publications, Switzerland.

Xie W.-H.,PLA Xuzhou Air force College | Xie W.-H.,Key Laboratory of Protective Materials | Shen H.-F.,PLA Xuzhou Air force College | Shen H.-F.,Key Laboratory of Protective Materials | And 3 more authors.
Gongneng Cailiao/Journal of Functional Materials | Year: 2012

With cement as matrix, silica fume and culver zed fuel ash, graphite and carbon fibers, nano-TiO 2 and steel fibers as sampled absorbing agents, experiments to analyze their absorbing performance are conducted, applying arch method. Experimental results indicate that the previous three composite materials blended with cement all show preferable absorbing performance within 8-18GHz frequency band. Absorbing performance improves generally with increasing proportion of blended absorbing agents, though restricted by a peak value. Cement blended with graphite and carbon fiber demonstrates rather inferior performance. Its peak value comes when fraction of the composite is 6wt%, above which the composite's absorbing performance declines. For the rest, peak value is generated when the fraction of silica fume and culver zed fly ash is 30wt%, that of nano-TiO 2 and steel fiber is 4vol% and 4wt% respectively. When absorbing agents exceed a certain threshold corresponding to the peak value, the composite's wave-penetrating property will enhance, while its absorbing performance will be reduced.

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