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KMID : 1011420130180010011
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Journal of Korean Ophthalmic Optics Society
2013 Volume.18 No. 1 p.11 ~ p.17
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Study on the Eco-friend Frame Sheet with Improved Glasses Temple’s Insertion-processibility by Blending Plasticizer of High Specific Heat
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Seo Young-Min
Lee Hae-Sung
Lee Sung-Jun
Jung Sang-Won
Kim Hyun-Chul
Kim Eun-Joo
Go Young-Jun
Choi Jin-Hyun
Lee Se-Guen
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Abstract
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Purpose: To improve glasses temple`s insert processibility of CA/PEG blend, triacetin with higher specific heat values in the processing temperature range is used as second plasticizer. Methods: The total amount of plasticizer is fixed at 30 wt% by CA. To determine optimal CA/PEG/triacetin blend for glasses frame, blends with different composition ratio were examined by various analysis: thermal properties, mechanical properties, glossiness. Results: Specific heat of the CA/PEG blend increased as the content of triacetin. In CA/PEG/triacetin blends, as triacetin concentration is increased, glass transition temperature is decreased and heat conservation rate of composites is increased. Furthermore, CA/PEG/triacetin blend exhibited higher mechanical properties and similar gloss characterization with CA/PEG blend. Conclusions: It is possible to improve the processibility inserting metal support to CA temple through varying the weight ratio of PEG/triacetin. The extruded sheets of CA/PEG/ triacetin blend had better glossiness and mechanical properties than those of CA/PEG blend.
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KEYWORD
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Cellulose acetate, Specific heat, Eco-friendly, Triacetin, Glasses temple`s insert processing
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