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액침 초미립 세라믹 충전 포장필름의 기계적 물성과 광투명성

Physical Properties and Light Transmission of Packaging Film Filled with Ultrafine Ceramic Particles from Liquid Precipitation

선흥석 강용구 박찬영

Sun H Kang Y Park C

HWAHAK KONGHAK, April 1998, 36(2), 300-304(5), NONE

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Abstract

초미립 세라믹을 충전시킨 기능성 필름을 실제 포장용으로 사용할 수 있을지 시험하였다. 금속이온 농도, 교반속도 그리고 분산제 양을 조절함으로써 크기를 약 10 나노미터로 조절한 이 초미립자는, 올레산을 표면에 입힘으로써 LDPE필름에 잘 분산시킬 수 있었다. 이 입자를 2 무게% 함유한 필름은 기존에 있던 분쇄입자를 함유한 필름보다 기계적 강도가 덜 저하되어서 강도저하 문제가 해결되었으며 더욱이 광투과성이 실제 포장필름으로 사용할 수 있을 만큼 일반 LDPE필름과 견줄만하였다.

A functional film including the ultrafine ceramic particles has been examined for the practical usage in packaging. By controlling metal ion concentrations, agitation speed and the amounts of dispersing agent, the particles of which the size has been adjusted to about 10 nanometer, could be successfully dispersed into LDPE film by coating the surface with oleic acid. The film containing two weight percentages of the particles had shown smaller decrease in mechanical strength than that from exiting crushed fine particles of size 20 microns, so that the problem of strength declination was resolved. Furthermore, the transmission of the visible light was compatible with the normal LDPE film as useful for practical packaging film.

Keywords

Packaging Films Ultrafine Ceramic Particle Properties

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