【摘要】：以青銅粉、Sm_2O_3為顏料,環(huán)氧改性有機(jī)硅為粘合劑,采用噴涂法制備了青銅-Sm_2O_3/環(huán)氧改性有機(jī)硅復(fù)合涂層。系統(tǒng)研究了熱處理溫度及熱處理時(shí)間對(duì)所制備涂層外觀(guān)、微結(jié)構(gòu)、近紅外反射率、紅外發(fā)射率及力學(xué)性能的影響。結(jié)果表明:青銅-Sm_2O_3/環(huán)氧改性有機(jī)硅復(fù)合涂層最高可耐受溫度可達(dá)到300℃,在300℃下熱處理5h后,涂層外觀(guān)、微結(jié)構(gòu)基本保持不變,發(fā)射率和1.06μm近紅外反射率可分別低至0.590和57.4%,力學(xué)性能保持完好,硬度、附著力和耐沖擊強(qiáng)度可分別保持在4H、1級(jí)和50kg·cm。所制備涂層在250℃下可長(zhǎng)時(shí)間使用,在250℃下熱處理100h后,涂層外觀(guān)、微結(jié)構(gòu)仍然保持不變,發(fā)射率和1.06μm近紅外反射率可分別低至0.558和59.3%,力學(xué)性能保持完好,硬度、附著力和耐沖擊強(qiáng)度可分別保持在4H、1級(jí)和50kg·cm。
[Abstract]:Bronze-Sm_2O_3/ epoxy modified organosilicon composite coating was prepared by spraying method using bronze powder, Sm_2O_3 as pigment and epoxy modified silicone as binder. The effects of heat treatment temperature and time on the appearance, microstructure, near infrared reflectivity, infrared emissivity and mechanical properties of the coatings were systematically studied. The results showed that the maximum tolerable temperature of bronze-Sm_2O_3/ epoxy modified silicone composite coating was up to 300 鈩，

本文編號(hào)：2469084