Blòk vè se yon materyèl estriktirèl esansyèl nan lavi chak jou moun, kòm li ka separe anviwònman an entèn ak ekstèn pandan y ap transmèt limyè. Sepandan, pèfòmans nan izolasyon tèmik nan vè se pòv, epi li se tendans rupture katastwofik anba enpak, sa ki lakòz rezistans enpak limite ak konsomasyon enèji. Anba chanjman tanperati ekstèn ak enpak debri, vè souvan vin eleman ki pi fèb nan bilding, machin transpò, ak aparèy elektwonik.
Dènyèman, yon ekip rechèch ki te dirije pa Pwofesè Ni Yong ak Pwofesè He Linghui nan University of Syans ak Teknoloji nan Lachin te pwopoze yon materyèl vè konpoze biomimetic ak amelyore pèfòmans aplikasyon konplè, konbine yon koki tankou estrikti kouch pèl ak taye taye materyèl entèlijan. Materyèl sa a vè konpoze montre ekselan izolasyon tèmik ak rezistans enpak pandan w ap kenbe transparans. Rezilta rechèch ki enpòtan yo te pibliye nan jounal entènasyonal Advanced Materials anba tit "Similtane Enhancement of Thermal Insulation and Impact Resistance in Transparent Bulk Compounds".
The pearl layer in natural shells can dissipate energy through the brick sliding mechanism under quasi-static or low-speed impact loading. However, as the impact speed increases, the improvement in the impact resistance of the shell like structure is limited (Figure 1a). On the contrary, shear hardening materials exhibit strain rate related enhancement effects under impact loading, which can dissipate a large amount of impact kinetic energy under high-speed impact (Figure 1b). On the basis of a deep understanding of the rate related mechanical properties of shell like structures and shear hardening materials, the research team constructed biomimetic composite glass materials. This material combines the advantages of low-speed impact resistance of the shell like structure with the strain rate strengthening performance of the shear hardening material. Mechanical simulation analysis shows that the delocalized deformation of the shell like structure panel can further promote the large-scale damage and energy dissipation of the shear hardening sandwich layer. The synergistic energy dissipation effect of shell like structure and shear hardening material shows a 1+1>2 efè, ki fè vè a konpoze montre pi bon pèfòmans rezistans enpak nan yon seri pi gwo vitès enpak (Figi 2).
Anplis de sa, vè konpoze biomimetik montre tou bon pèfòmans izolasyon tèmik. Panèl estrikti koki biomimetik la diminye soti nan kondiksyon chalè avyon atravè yon estrikti layout espesyal brik mòtye, epi li travay ansanm ak materyèl ki ba konduktiviti tèmik redi pou amelyore pèfòmans izolasyon tèmik nan vè konpoze biomimetic. Konpare ak vè blòk lajman itilize, vè laminated, ak vè izolasyon, vè konpoze biomimetik montre avantaj nan pèfòmans aplikasyon konplè tankou transparans, lejè, rezistans enpak, ak izolasyon tèmik (Figi 1c).
Figi 1
Figi 2