Effect of glass fiber length and content on mechanical properties of polybutylene terephthalate

P Threepopnatkul, N Sukprasurt, W Prom-Oh, C Kulsetthanchalee

Abstract


The effect of glass fiber (GF) length and content were studied on mechanical properties of polybutylene terephthalate (PBT). The glass fiber was found to be highly compatible with PBT. The PBT/6 mm GF 30% composite possessed the highest flexural modulus (FM) and flexural strength (FS). The FM and FS were increased with the increasing of GF content. The longer glass fiber resulted in the higher value of FM and FS but hardly affected on the deflection and unnotched izod impact strength of the composites. The impact strength of composites was drastically decreased with the addition of glass fiber as compared with neat PBT.

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