Abstract: Tensile strengths of PMMA specimens with adhesive joints made by four kinds of bonding technologies (conventional bonding, quick bonding, ultraviolet light polymerization bonding and ultraviolet light polymerization bonding with heat treatment) were tested.The Weibull distribution theory was used to evaluate the dispersion of tensile strength data.The results show that Weibull distribution function can well describe strength distributions.Average strength of specimens by quick bonding technology was higher and the dispersion of strengths was lower.The bonding coefficient was obtained to be 0.83.Besides, the bonding process consumed less time.So the quick bonding technology is more suitable for bonding of PMMA structures in large engineering.

Key words: PMMA;adhesive joint;bonding technology;Weibull distribution;bonding coefficient