Impact resistance was greatly improved but the other mechanical properties were not Durability was excellent. The fibre-to-cement matrix bond was inadequate. Its relatively high cost compared with that of propylene prevented its use in fibre-cement However it may be used in gaskets, felts and diaphragms.
Perlon is a trade name which has been used for both nylons and polyurethanes.
Nylon fibres have the following properties
|Tensile strength||400-900 MPa|
|Young’s modulus||5 GPa|
|Trọng lượng riêng||0.9 – 1.14|