KOREA POLYTECHNIC UNIVERSITY INDUSTRY ACADEMIC COOPERATION FOUNDATION
发明人:
CHO, YOUNG SANGKR,조영상
申请号：
KR1020150046066
公开号：
KR1020160117954A
申请日:
2015.04.01
申请国别(地区):
KR
年份:
2016
代理人:
摘要：
The present invention relates to a method for preparing porous titania powder and the porous titania powder prepared by the method. A method for preparing porous titania powder according to the present invention comprises: a step of forming droplets by a polar solution which comprises polymer particles and nanocolloids and consists of water as a polar solvent a step of forming composite powder of titania-polymer particles by self-assembling by spraying the droplets through a nozzle of a spray dryer and injecting gas of high temperatures to the droplets, thereby evaporating water included in the droplets and a step of performing plastic working of the composite powder of titania-polymer particles, thereby removing the polymer particles in the composite powder of titania-polymer particles to form the porous titania powder including pores. Accordingly, a method for preparing porous titania powder according to the present invention is capable of easily preparing particles not to a nanosize, but to a micrometer level by self-assembling titania nanoparticles having ultraviolet ray-blocking properties into a micrometer-sized porous powder. Therefore, a method for preparing porous titania powder according to the present invention is capable of preparing the porous titania powder into a UV blocking material which has no concern over harmfulness to the human body since it is difficult for the UV blocking material to penetrate into the skin, and there are few concerns that the UV blocking material expresses cancer although the UV blocking material is inhaled into a respiratory organ.COPYRIGHT KIPO 2016본 발명은 다공질 타이타니아 분말의 제조방법 및 그 방법에 의해 제조된 다공질 타이타니아 분말 에 관한 것으로서, 고분자 입자와 타이타니아 나노콜로이드를 포함하며 물을 극성용매로 하여 이루어지는 극성용액에 의해 액적을 형성하는 단계와, 상기 액적을 분무건조기의 노즐을 통해 분사하면서 상기 액적에 고온의 가스를 분사하여 상기 액적에 포함된 수분을 증발시켜서 자기조립에 의해 타이타니아-고분자입자의 복합 분말을 형성하는 단계와, 상기 타이타니아-고분자입자의 복합분말을 소성가공하여 상기 타이타니아-고분자입자의 복합분말 내의 상기 고분자입자를 제거하여 기공을 포함하는 다공질 타이타니아 분말을 형성하는 단계를 포함하여 구성되어, 자외선 차단 특성을 갖는 타이타니아 나노 입자를 마이크로미
