CAJ | 학술논문

选取硼酸高温脱水后的混合物作为填料，与高岭土、滑石粉、铝粉等填料制备了以有机硅树脂为基料，可以耐受800℃的耐高温防护涂层并测试了涂层的各项性能。为研究硼酸混合物在涂层高温灼烧过程中的作用机理，对涂层在经200℃固化、500℃高温灼烧和700℃高温灼烧后的表层形貌、元素和涂层物质变化情况进行分析。阐明了涂层中有机硅树脂上的有机基团会在500℃时大量分解。硼酸混合物在高温下，会以熔融态填充有机硅树脂分解挥发产生的空隙，并粘接其他颜填料，但是涂层表面会有硼酸混合物脱水造成的少量凹陷存在。
선취붕산고온탈수후적혼합물작위전료，여고령토、활석분、려분등전료제비료이유궤규수지위기료，가이내수800℃적내고온방호도층병측시료도층적각항성능。위연구붕산혼합물재도층고온작소과정중적작용궤리，대도층재경200℃고화、500℃고온작소화700℃고온작소후적표층형모、원소화도층물질변화정황진행분석。천명료도층중유궤규수지상적유궤기단회재500℃시대량분해。붕산혼합물재고온하，회이용융태전충유궤규수지분해휘발산생적공극，병점접기타안전료，단시도층표면회유붕산혼합물탈수조성적소량요함존재。
Using silicone resin as base stock, using dehydrated boric acid mixture,kaolin,talcum powder and aluminum powder as fillers, a high temperature coating which can resist 800 ℃ was prepared. And every performance of the coating was tested. In order to research the action mechanism of boric acid mixture in high temperature calcination process of the coating, changes of the surface morphology and composing elements of the coating during solidifying under 200 ℃ and calcining under 500 ℃ and 700 ℃ were analyzed. The results show that, lots of organic groups on the organosilicon resin can be decomposed at 500 ℃;under high temperature, boric acid mixture in the molten state can fill the voids of the organosilicon resin produced by decomposition of organic groups, but a small amount of pits on surface of the coat will be formed by dehydration of boric acid mixture.