Silylated polyazamide

Silylated polyazamides (Si-PAA s) are water-soluble polymers. Therefore, they are absorbed more evenly from a one-phase aqueous medium to form a continuous fiber coating. Such a size provides excellent strand integrity and stiffness, resin compatibility and, most importantly, chemical reactivity with glass through pending silane functionality. 

TABLE 2-9. EFFECT OF SILYLATED POLYAZAMIDE TABLE 2-10. COMPARISON OF BULK DENSITIES OF ... 

Although these data establish the usefulness of silylated polyazamide sizes compared to conventional silanes, they also point out the limitations of such systems relative to commercial sizes. In the case of reinforced PBT, neither simple silane sizes—lubricant-modified nor polyazamides—can compete effectively with the sophisticated chemistry of modern commercial sizes either on strength or on impact and environmental resistance grounds. 

Effect of Silylated Polyazamide Sizes on Impact Strength of... 

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