CAJ | 학술논문

以聚氨酯泡沫为载体,采用有机泡沫浸渍法工艺,以高岭土和硅藻土为原材料,六偏磷酸钠为分散荆,硅溶胶作黏结剂,并添加一定量的蒙脱土为陶瓷浆料,反复浸渍,采取抽真空阴干、烘干和烧结的工艺,制备一种新型多孔陶瓷材料.用扫描电镜、热重分析、X射线衍射等手段对多孔陶瓷材料性能进行了表征,同时对浆料的成分、浓度、烧结制度等对陶瓷性能的影响做了系统的研究.结果表明:NaOH浓度为40%,温度为20℃,浸泡时间为120min为前处理最佳条件;确定了最佳烧结机制;随着硅藻土含量的增加,陶瓷的显气孔率增大,抗压强度减小;制备的多孔陶瓷显气孔率为71%～83%,抗压强度为0.58～1.5MPa.
이취안지포말위재체,채용유궤포말침지법공예,이고령토화규조토위원재료,륙편린산납위분산형,규용효작점결제,병첨가일정량적몽탈토위도자장료,반복침지,채취추진공음간、홍간화소결적공예,제비일충신형다공도자재료.용소묘전경、열중분석、X사선연사등수단대다공도자재료성능진행료표정,동시대장료적성분、농도、소결제도등대도자성능적영향주료계통적연구.결과표명:NaOH농도위40%,온도위20℃,침포시간위120min위전처리최가조건;학정료최가소결궤제;수착규조토함량적증가,도자적현기공솔증대,항압강도감소;제비적다공도자현기공솔위71%～83%,항압강도위0.58～1.5MPa.
Taking Polyurethane foam as the carrier, using organic foam impregnation process, choosing kaolin and diatomite for raw materials, by using a forming technology of porous ceramics with dipping polymeric sponge in slurry, a new type of environmental porous ceramics material was obtained. The material was characterized by scanning electron microscopy, X-ray diffraction and thermo gravimetric analyzer. The influences of composition of the slurry and ceramic sintering system on porous ceramics were investigated. The experimental result shows that concentration of NaOH at 40%, at 20℃, for 120min soaking time are the optimal conditions for the pre-treatment. The best sintering system was determined; thirdly apparent porosity changed in inverse proportion to mechanical properties, with the increase of diatomite content, the apparent porosity increased, compressive strength decreased. Porosity and compressive strength of porous ceramic reached 71% ～ 83% and 0.58 ～ 1.5MPa respectively.