CAJ | 학술논문

以废弃的阴极射线管玻璃为原料,SiC为发泡剂,采用粉末烧结法制备了高强度泡沫玻璃,通过DSC、XRD、SEM等分析手段研究了发泡剂的加入量及升温速率、降温速率、保温时间等对泡沫玻璃性能的影响.实验结果表明:泡沫玻璃的机械性能与发泡剂的加入量、升温速率、降温速率、保温时间等具有很大关系,当加入1～7 wt%的发泡剂SiC,在840℃发泡保温后以1～2℃/min的冷却速率冷却时,试样的机械强度可达2～20 Mpa.试样中产生了Pb,Pb3O4和Al6Si2O13等晶体及试样本身的高密度是导致试样机械强度高的主要原因.
이폐기적음겁사선관파리위원료,SiC위발포제,채용분말소결법제비료고강도포말파리,통과DSC、XRD、SEM등분석수단연구료발포제적가입량급승온속솔、강온속솔、보온시간등대포말파리성능적영향.실험결과표명:포말파리적궤계성능여발포제적가입량、승온속솔、강온속솔、보온시간등구유흔대관계,당가입1～7 wt%적발포제SiC,재840℃발포보온후이1～2℃/min적냉각속솔냉각시,시양적궤계강도가체2～20 Mpa.시양중산생료Pb,Pb3O4화Al6Si2O13등정체급시양본신적고밀도시도치시양궤계강도고적주요원인.
The new high strength foam glass-ceramics were prepared by sintering method using waste cathode ray tube(CRT)as the raw material and SiC as foaming agent.The effect of foaming agent dosage,heating rate,cooling rate and holding time on mechanical properties of the sample were analyzed by differential scanning calorimeter(DSC),X-ray diffraction(XRD),and scanning electron microscopy(SEM).The experimental results indicate that mechanical strength is strongly affected by dosage of foam agent,heating rate,cooling rate and holding time.Due to the precipitation of Pb,Pb3O4 and A16Si2O13 and a dense porous structure,high mechanical strength values of 2～20 MPa could be obtained by adding 1～7 wt% SiC,a relatively low sintering temperature around 840℃ and a cooling rate of 1～2℃/min.Good correlations between mechanical strength,precipitation of micro-crystals and SiC dosage were observed.