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Effects of Nano-Aluminum Nitride on the Performance of an Ultrahigh-Temperature Inorganic Phosphate Adhesive Cured at Room Temperature

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Smart Structures and Advanced Composite Materials Lab, College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China
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Science and Technology Research Institute, Harbin Engineering University, Harbin 150001, China
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Institute of Petrochemistry, Heilongjiang Academy of Science, Harbin 150001, China
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Department of Mechanical Engineering, Hong Kong Polytechnic University, Hong Kong 999077, China
*
Author to whom correspondence should be addressed.
Materials 2017, 10(11), 1266; https://doi.org/10.3390/ma10111266
Received: 19 September 2017 / Revised: 31 October 2017 / Accepted: 1 November 2017 / Published: 3 November 2017
(This article belongs to the Section Manufacturing Processes and Systems)
Based on the optimal proportion of resin and curing agent, an ultrahigh-temperature inorganic phosphate adhesive was prepared with aluminum dihydric phosphate, aluminium oxide ( α -Al2O3), etc. and cured at room temperature (RT). Then, nano-aluminum nitride (nano-AlN), nano-Cupric oxide (nano-CuO), and nano-titanium oxide (nano-TiO2) were added into the adhesive. Differential scanning calorimetry was conducted using the inorganic phosphate adhesive to analyze the phosphate reactions during heat treatment, and it was found that 15 wt % nano-AlN could clearly decrease the curing temperature. Scanning electron microscopy was used to observe the microphenomenon of the modified adhesive at ultrahigh-temperature. The differential thermal analysis of the inorganic phosphate adhesive showed that the weight loss was approximately 6.5 wt % when the mass ratio of resin to curing agent was 1:1.5. An X-ray diffraction analysis of the adhesive with 10% nano-AlN showed that the phase structure changed from AlPO4(11-0500) to the more stable AlPO4(10-0423) structure after heat treatment. The shear strength of the adhesive containing 10% nano-AlN reached 7.3 MPa at RT due to the addition of nano-AlN, which promoted the formation of phosphate and increased the Al3+. View Full-Text
Keywords: inorganic phosphate adhesive; modified; ultrahigh-temperature; room temperature curing; shear strength inorganic phosphate adhesive; modified; ultrahigh-temperature; room temperature curing; shear strength
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Ma, C.; Chen, H.; Wang, C.; Zhang, J.; Qi, H.; Zhou, L. Effects of Nano-Aluminum Nitride on the Performance of an Ultrahigh-Temperature Inorganic Phosphate Adhesive Cured at Room Temperature. Materials 2017, 10, 1266.

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