Development of a new continuous Si-Ti-C-O fibre using an organometallic polymer precursor
Development of a new continuous Si-Ti-C-O fibre using an organometallic polymer precursor
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DOI：
10.1007/bf01111919
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发表时间：
1988-07
影响因子：
4.5
通讯作者：
T. Yamamura;T. Ishikawa;M. Shibuya;T. Hisayuki;K. Okamura
中科院分区：
文献类型：
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作者：
T. Yamamura;T. Ishikawa;M. Shibuya;T. Hisayuki;K. Okamura
以聚二甲基硅烷、聚硼二苯基硅氧烷和四异丙醇钛为原料，合成了一种可用作陶瓷纤维先驱体的聚钛碳硅烷。采用熔融纺丝法制备了聚钛碳硅烷，并采用从聚合物纤维到陶瓷纤维的连续热处理工艺，制备了柔性Si-Ti-C-O纤维。发现该非晶陶瓷纤维的密度、拉伸强度和杨氏模量分别为2.35 g cm-3、3.0±0.2和220±10 GPa。Si-Ti-C-O纤维在较高温度（约1200° C）下保持其高拉伸强度。这种陶瓷纤维的电阻率在107到10−1Ωcm的范围内。这种陶瓷纤维被认为可用作复合材料的增强纤维。
A polytitanocarbosilane, which is useful as the precursor polymer for ceramic fibre, was synthesized using polydimethylsilane, polyborodiphenylsiloxane and titanium tetraisopropoxide. The polytitanocarbosilane was melt-spun and using the continuous heat-treatment process from the polymer fibre to ceramic fibre, flexible Si-Ti-C-O fibre was produced. The density, tensile strength and Young's modulus of this amorphous ceramic fibre were found to be 2.35 g cm−3, 3.0±0.2 and 220±10 GPa, respectively. The Si-Ti-C-O fibre retained its high tensile strength to higher temperatures (about 1200° C). The specific resistance of this ceramic fibre covered a wide range of 107to 10−1ωcm. This ceramic fibre is considered to be useful as reinforcement fibre for composites.