There are many classification methods of glass fiber, generally can be classified from glass compositions of raw materials, fiber diameter and fiber appearance and fiber characteristics.
(1) Classification of raw materials for glass
This classification method is mainly used for the classification of continuous glass fiber.
In general, the alkali content of different to distinguish:
Alkali free glass fiber (commonly known as E glass): the provisions of not more than 0.5% of alkali metal oxide, foreign general is about 1%.
Medium alkali glass fiber: alkali metal oxide content is 11.5% - 12.5%;
Special glass fiber, such as by pure mg Al Si ternary composition of high-strength glass fiber; mg Al Si series high strength, high elastic glass fiber; silicon, aluminum, calcium and magnesium in lines resistant chemical corrosion of glass fiber; lead fiber; high silica fiber quartz fiber.
(2) The classification of filament diameter
Glass fiber filaments were cylindrical, with its diameter can be divided into several:
Crude fiber: 30μm；
Primary fiber:20μm；
Intermediate fiber:10μm～20μm；
Advanced fiber:3μm～10μm(Textile fiber)；
Superfine fiber:The filament diameter is less than4μm。
The filament diameter is different, not only the performance of the fiber has the difference, but also affects the production process, production cost and fiber. General 5 m - 10 m fiber as textile products with; 10 m and 14 m fibers generally do twistless roving, non-woven fabrics, short cut fiber felt was more appropriate.
(3) Fiber appearance classification
Continuous fiber, which has no roving and twisting roving (Textile); short cut fiber; hollow glass fiber; glass powder and ground fiber.
(4) Fiber characteristics classification
To the fiber itself has the performance can be divided into: high-strength glass fiber; high modulus glass fiber; fiber glass temperature resistance; alkali resistant glass fiber; acid resistant glass fiber; ordinary glass fiber (no alkali and alkali glass fiber).
