K 2 O-CaO-SiO 2 -P 2 O 5 계 유리의 형성 및 용출특성

윤태민; 윤영진; 이용수; 강원호; Yoon Tae Min; Yoon Young Jin; Lee Yong Soo; Kang Won Ho

Korean Journal of Materials Research, Vol.14, No.1, 67-72, January, 2004

DOI10.3740/MRSK.2004.14.1.067 Export Citation

K 2 O-CaO-SiO 2 -P 2 O 5 계 유리의 형성 및 용출특성

Glass Formation and Dissolution Characteristics of K 2 O-CaO-SiO 2 -P 2 O 5

윤태민^†, 윤영진, 이용수, 강원호

단국대학교 신소재공학과

Yoon Tae Min^†, Yoon Young Jin, Lee Yong Soo, and Kang Won Ho

Department of New Materials Science & Engineering, Dankook University, Cheonan, Chungnam 330-714, Korea

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The glass-forming conditions are investigated in the K 2 O-CaO- SiO 2 ?P 2 O 5 system with 10~65 mole% of P 2 O 5 . Thermal properties and dissolution properties were investigated according to variation of the SiO and KO contents in selected compositions. The glass formation condition was determined when K 2 O/ P 2 O 5 mole ratio 0~0.24, SiO 2 /( SiO 2 + P 2 O 5 ) mole ratio 0~0.29, and CaO/ P 2 O 5 mole ratio 0~1.00. In the result of the thermal properties, the glass transition temperature( T g ) and softening temperature( T s ) were gradually shifted to the lower temperature range with increase of K 2 O contents. The maximum value of the chemical durability was shown in K 2 PO 2 O 5 mole ratio 0.17 when the SiO 2 contents were changed, and K 2 O was fixed at 10 mole%. Hence the change of the K 2 O/ P 2 O 5 mole ratio was found that a new main factor of the chemical durability.

Keywords:water soluble glass;Eco-glass;glass fertilizer;chemical durability

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