| 摘要 |
PROBLEM TO BE SOLVED: To provide a PET nano-composite fiber having excellent initial and high-temperature modulus produced by adding at least one compound selected from the group consisting of nano-compounds C<SB>56</SB>H<SB>122</SB>O<SB>12</SB>Si<SB>7</SB>, C<SB>31</SB>H<SB>71</SB>NO<SB>12</SB>Si<SB>8</SB>, C<SB>59</SB>H<SB>127</SB>NO<SB>12</SB>Si<SB>8</SB>and C<SB>33</SB>H<SB>76</SB>N<SB>2</SB>O<SB>12</SB>Si<SB>8</SB>and having excellent thermal stability and compatibility with PET in a polymerization step. SOLUTION: At least one compound selected from the group consisting of C<SB>56</SB>H<SB>122</SB>O<SB>12</SB>Si<SB>7</SB>, C<SB>31</SB>H<SB>71</SB>NO<SB>12</SB>Si<SB>8</SB>, C<SB>59</SB>H<SB>127</SB>NO<SB>12</SB>Si<SB>8</SB>and C<SB>33</SB>H<SB>76</SB>N<SB>2</SB>O<SB>12</SB>Si<SB>8</SB>which are organic/inorganic hybrid nano-compounds is added in an amount of 1-5 wt.% based on the whole polymer in the polymerization step to produce a polyethylene terephthalate nano-composite chip having≥85 mol% of ethylene terephthalate units and an intrinsic viscosity within the range of 0.50-1.20. The resultant composite chip is then subjected to melt-spinning and stretched to produce the PET nano-composite fiber. COPYRIGHT: (C)2007,JPO&INPIT
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