报告人简介：

Alan Kin-tak Lau（刘建德）院士

•澳大利亚斯威本科技大学副校长

•欧洲科学与艺术学院院士

•英国机械工程师学会国际副会长

•科劲国际集团独立非执行董事

•航空和纳米复合材料领域国际著名学者，论文引用超过10000次，H-index = 47

报告内容简介：

Polymer-based advanced composites always suffer from degradation at extreme temperatures in the range between 220 and 77 K and low atmospheric pressure. Within this temperature range, composite structures behave very brittle and many micro-cracks are easily formed due to differential thermal coefficients of expansion (CTEs) between polymer matrix and high strength reinforcements. Besides, at the Low Earth Orbit (LEO) environment the structures may also be subject to damages due to micro-meteoroid attack, in which many tiny particles left over from the formation of the solar system and they are travelling at very high speed (hyper-velocity) to cause serious impact and abrasion onto the structures. Out-gassing and high oxidation rate are also problems for polymers using at this environment. In this lecture, an overview on the nanocomposites, their mechanical, thermal and structural properties at different working environments is given. The following key items will also be introduced: (i) design of the heat shield’s geometry for re-entry vehicles; (ii) shock wave effect in relation to the heat transmission to the vehicles; (iii) advantage of using Phenolic Resin Carbon Ablator (PICA); (iv) types of nanoparticles for property enhancement for the vehicles and (v) possibility of using nano-particles to enhance the effectiveness of pyrolyzing process of PICA to prolong the heat transfer.

报告海报-Prof Lau.pdf