US 11,884,575 B2
Glass fiber composition, glass fiber and composite material thereof
Guorong Cao, Tongxiang (CN); Lin Zhang, Tongxiang (CN); Wenzhong Xing, Tongxiang (CN); Xiucheng Hong, Tongxiang (CN); and Zhonghua Yao, Tongxiang (CN)
Assigned to JUSHI GROUP CO., LTD., Tongxiang (CN)
Filed by JUSHI GROUP CO., LTD., Tongxiang (CN)
Filed on Apr. 15, 2022, as Appl. No. 17/721,958.
Application 17/721,958 is a continuation of application No. 16/073,131, granted, now 11,339,085, previously published as PCT/CN2017/112002, filed on Nov. 21, 2017.
Claims priority of application No. 201710762134.0 (CN), filed on Aug. 30, 2017.
Prior Publication US 2022/0234945 A1, Jul. 28, 2022
Int. Cl. C03C 13/00 (2006.01); C03C 3/087 (2006.01); C03C 3/112 (2006.01)
CPC C03C 13/00 (2013.01) [C03C 3/087 (2013.01); C03C 3/112 (2013.01); C03C 2213/00 (2013.01)] 15 Claims
 
1. A composition for producing a glass fiber, comprising the following components with corresponding percentage amounts by weight:
 
 
 
 SiO2 58.1-60.5%
 
 Al2O3 17.1-19.8%
 
 MgO  9.1-12.8%
 
 CaO  6.4-11.8%
 
 SrO  0.1-1.5%
 
 Na2O + K2O  0.1-1.1%
 
 Fe2O3   0.05-1%
 
 TiO2   <0.8%
 
 SiO2 + Al2O3   ≤79.4%
 
 
wherein
a total weight percentage of the above components is greater than 99%;
a weight percentage ratio C1=(Al2O3+MgO)/SiO2 is between 0.447 and 0.56; and
a weight percentage ratio C2=(CaO+MgO)/(SiO2+Al2O3) is greater than 0.205 and less than or equal to 0.29.