| 摘要 |
Sizing compositions for fibers having a viscosity of greater than about 300 centipoise and a binder resin concentration of at least about 90 wt. percent based on the dry weight of sizing chemicals in the sizing are disclosed. Wet, sized glass fibers having such a sizing on their surface and having an LOI of at least about 1 wt. percent are used to make mats by conventional dry laid and preform processes without having to add any additional binder to bond the fibers together. Wet sized, chopped glass fiber products and wet sized fiber roving products having a moisture content of 0.5 to about 20 wt. percent or higher are disclosed. Methods of making wet sized fibers of the invention are disclosed. Methods of using these sized glass fibers to make nonwoven fibrous mats and preforms are also disclosed.
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