采用氧氯化锆、乙酰丙酮等原料合成聚乙酰丙酮合锆纺丝液,经离心甩丝和水蒸汽气氛热处理,成功制备出长度1 ～ 10 cm、直径4～15 μm、洁白柔韧的ZrO2纤维棉.通过FT-IR和1 H-NMR测试,推测了聚乙酰丙酮合锆的链状分子结构.初步研究了高温煅烧后ZrO2纤维的微观结构变化情况,结果表明:直接经1650 ℃/24 h煅烧,纤维晶粒发生明显长大,同时纤维柔韧性也显著下降；而先经1900℃/10 min快速超高温烧结预处理,再经1650℃保温120 h煅烧,纤维晶粒未发生明显长大,纤维仍可保持较好的柔韧性,表明快速超高温烧结预处理是提高ZrO2纤维高温结构稳定性的有效手段.
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