High-strength, high-modulus fiberglass

摘要

A high-intensity and high-modulus glass fiber is provided. Said fiber is produced by improving the processes, components and proportion of conventional E-glass production process and apparatus. The fiber contains 13% CaO at most, no boron and fluorine, meanwhile ZrO 2 and Li 2 O is first added, B 2 O 3 is first removed, and SO 3 is added. The intensity and the modulus of the fiber are slightly lower than those of S-glass or T-glass, but obviously higher than those of E-glass and ECR-glass which are highly produced and widely used or other boron-free glass such as Advantex glass. Besides the intensity, modulus and fatigue resistance, said fiber has obvious advantages over E-glass in heat, acid and alkali resistance. The glass fiber roving made from said fiber has 22% higher tensile strength and 11ˆ¼15.7% higher modulus than those of E-glass, and has 16% higher tensile strength and 5ˆ¼6% higher modulus than those of ECR-glass.