초록 ▼

A glass fiber composition has 52 to 62 percent by weight SiO 2 , 0 to 2 percent by weight NaO 2 O, 16 to 25 percent by weight CaO, 8 to 16 percent by weight Al 2 O 3 , 0.05 to 0.80 percent by weight Fe 2 O 3 , 0 to 2 percent by weight K 2 , 1 to 5 percent by weight MgO, 0 to 5 percent by weig

A glass fiber composition has 52 to 62 percent by weight SiO 2 , 0 to 2 percent by weight NaO 2 O, 16 to 25 percent by weight CaO, 8 to 16 percent by weight Al 2 O 3 , 0.05 to 0.80 percent by weight Fe 2 O 3 , 0 to 2 percent by weight K 2 , 1 to 5 percent by weight MgO, 0 to 5 percent by weight B 2 O 3 , to 0 to 2 percent by weight TiO 2 , and 0 to 1 percent by weight F, and further has a log 3 forming temperature of no greater than 1240° C. based on an NIST 714 reference standard, a ΔT of at least 50° C., and a SiO 2 /RO ratio of no greater than 2.35.

대표청구항 ▼

1. A glass composition comprising: 2 2 O 3 2 2 O 2 O 2 O 2 O 3 wherein the glass composition is essentially boron-free, has a log 3 forming temperature no greater than 1230° C. based on NIST 710A reference standard, the difference between the log 3 forming temperature and the liquid

1. A glass composition comprising: 2 2 O 3 2 2 O 2 O 2 O 2 O 3 wherein the glass composition is essentially boron-free, has a log 3 forming temperature no greater than 1230° C. based on NIST 710A reference standard, the difference between the log 3 forming temperature and the liquidus temperature is at least 50° C., and the ratio of SiO 2 to (CaO+MgO) is no greater than 2.42. 2. The glass composition according to claim 1, wherein the glass is essentially fluorine-free. 3. The glass composition according to claim 1, wherein the ratio of SiO 2 to (CaO+MgO) is no greater than 2.40. 4. The glass composition according to claim 1, wherein the ratio of SiO 2 to (CaO+MgO) is from 2.15 to 2.35. 5. The glass composition according to claim 1, wherein the glass composition has a log 3 forming temperature no greater than 1220 20 C. based on an NIST 714 reference standard. 6. The glass composition according to claim 2, wherein the difference between the log 3 forming temperature and the liquidus temperature is at least 60° C. 7. The glass composition according to claim 5, wherein the difference between the log 3 forming temperature and the liquidus temperature is at least 60° C. 8. A glass composition comprising: 2 2 O 3 2 2 O 2 O 2 O 2 O 3 wherein the glass composition is essentially boron-free, has a log 3 forming temperature no greater than 1230° C. based on NIST 710A reference standard, the difference between the log 3 forming temperature and the liquidus temperature is at least 50° C., and the ratio of SiO 2 to (CaO+MgO) is no greater than 2.42. 9. The glass composition according to claim 8, wherein the log 3 forming temperature is no greater than 1220° C. 10. The glass composition according to claim 8, wherein the difference between the log 3 forming temperature and the liquidus temperature is at least 60° C.