$Glass composition with middle refractive index and high hardness for marking road line and glass bead comprising the same$

Glass composition with middle refractive index and high hardness for marking road line and glass bead comprising the same

The present invention relates to a glass composition having middle refractive index in the range of 1.65 to 1.8 and durability of hardness of 690 Hv or more. In addition, the glass composition comprises: 34 to 49 wt% of SiO_2; 14 to 29 wt% of CaO; 12 to 27 wt% of TiO_2; and more than 0 and less than...

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Bibliographische Detailangaben
Hauptverfasser:	ROH, JONG NAM, CHO, SUNG HOON, CHUNG, WOON JIN, KIM, SEONG HYEON, LEE, HAN SOL
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS METALLURGY MINERAL OR SLAG WOOL SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS
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Beschreibung
Zusammenfassung:	The present invention relates to a glass composition having middle refractive index in the range of 1.65 to 1.8 and durability of hardness of 690 Hv or more. In addition, the glass composition comprises: 34 to 49 wt% of SiO_2; 14 to 29 wt% of CaO; 12 to 27 wt% of TiO_2; and more than 0 and less than 25 wt% of (Al_2O_3 + MgO), wherein MgO/(Al_2O_3 + MgO) which is the weight ratio of (Al_2O_3 + MgO) and MgO is 0.24 to 0.6. 본 발명에 따른 유리 조성물은 SiO34 내지 49 중량%, CaO 14 내지 29 중량%, TiO12 내지 27 중량% 및 (AlO+MgO) 0 초과 25 중량% 이하로 포함하며, (AlO+MgO) 및 MgO의 중량비인 MgO/(AlO+MgO)는 0.24 내지 0.6인 것을 특징으로 한다.