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* PDF α Ͻñ ٶϴ. |
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/ȣ |
2013 / ȣ: V.25,no.3,Sept |
1() |
SiO2/TiO2 sol-gel ̿ p-ƶ̵ |
2(Ÿ) |
Improvement of Photo-stability for p-Aramid Fibers by SiO2/TiO2 Sol-Gel Method |
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̿ϡ̹ö |
(Ÿ) |
Young-il Lee, Min-hyuck Jung and Mun-cheul Lee |
Ҽ() |
λб ý۰а |
Ҽ(Ÿ) |
Pusan National University |
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172 ~ 180 : 9 |
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Korean |
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Aramid fibers are being used increasingly in a wide range of application due to low density, high specific
strength, high modulus, and high thermal resistance. But owing to its special physical and chemical structures, it is sensitive
to absorb the ultraviolet light which will degrade the fiber`s useful mechanical properties and structure. In this paper, the
sol-gel technique was used to improve the photo-stability of p-aramid fibers. TiO2, modified SiO2/TiO2 sol were used as
coating solutions. The influence of the such coatings on the photo-stability of p-aramid fiber was investigated by an
accelerated photo-ageing method using xenon lamp. The photo-stability of p-aramid fiber showed obvious improvement after
the modified silica binding coating. But the amorphous TiO2 sol coatings showed a negative effect. After 144h light exposure,
the modified silane binder-coated fibers showed less degradation in mechanical properties with the retained tensile strength
greater than about 70% of the original value. |
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p-aramid, SiO2/TiO2 sol, coating, tensile strength, XPS analysis |
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Reference |
http://www.koreascience.or.kr/article/ArticleFullRecord.jsp?cn=OSGGBT_2013_v25n3_172 |
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