E-glass is a kind of "electronic" glass. It has with good water-resistance, insulation, and high mechanical strength. To simplify E-glass production, manufacturers add B2O3 and fluorine in the glass batch. During the process, particles with B2O3 & volatile fluorine get released into the atmosphere. To reduce environment pollution, ECR glass comes into being.
a. ECR glass is like E-glass but without boron and fluorine. Friendly to the environment.
b. The B2O3 and fluorine removed in the glass formulation. So the chemical resistance (including water-resistance, acid-resistance and alkali-resistance) is better - especially acid- resistance.
c. Higher temperature resistance. The softening point of ECR glass is 40-500 degrees C higher than E-glass.
d. ECR Glass has better dielectric strength, lower electrical leakage, and higher surface resistance.
e. ECR glass has better mechanical properties when compared with E-glass.
f. ECR is good for all the e-glass applications, except for transparent FRP panel applications,
g. ECR glass is made under ASTM-D578-1999 standard since January 2005.
Outstanding Features In Some Applications Over E-Glass
Thermosetting Matrix Systems
a. FRP pipe: Compared with E-glass the FRP pipe made from ECR glass enjoys better acid resistance. In many countries, especially in Middle East countries, the sewage pipes must be made with ECR glass or by OC's advantex glass fiber
b. Marine: Compared with E-glass, some FRP products mainly made with ECR Glass (such as Chopped Strands Mat, Woven Roving, and Spray-up roving) enjoy better seawater resistance in marine applications made with these ECR materials.
c. Rich resin FRP field such as the liners of FRP pipes, acid resistant storage tank mainly use surface veil ,chopped strand mat, woven roving and combo mat.
d. Pultrusion FRP products: pultrusion products made by ECR glass enjoy better acid resistance, insulation, tensile strength and modulus. Acid-resistant epoxy insulation rod must be made by ECR glass or OC's Advantex glass fiber.
Thermoplastic Matrix Systems
a. Lower harmful heavy metal volume than E-glass. Chopped strands, direct roving and multi-end roving made with ECR glass are therefore better for usage in cars, electronics, and electronic appliances.
b. FRTP products enjoy a higher modulus than E-glass.
c. Others: The softening point of ECR glass is higher than E-glass, so it is more suitable for the high temperature resistance products, such as muffler for cars