Highly elastic coefficient glass fiber composites and their glass fibers and composites

摘要

The present invention provides a high elastic modulus fiberglass composition and glass fibers and composites thereof. Among them, the content of each component of the glass fiber composition is in terms of weight percent, SiO ₂ 55-64%, Al ₂ O _{313-24%, Y 2 O 3 0.1-6} %, CaO 3.4-10.9%, MgO 8-14%, CaO + MgO + SrO 22%, Li 2 O + Na 2 O + K 2 O 2%, TiO ₂ 2%, Fe ₂ O ₃ 1.5% and La ₂ O ₃ 0-1.2%, and the ratio of the weight percentage is C1 = (Li ₂ O + Na ₂ O + K ₂ O) / (Y ₂ O ₃ + La ₂ O ₃ ) is expressed as 0.26. This composition significantly improves the modulus of elasticity of the glass, effectively suppresses the crystallization tendency of the glass, decreases the liquidus temperature of the glass, and obtains a comparatively ideal ΔT value. In particular, Suitable.