In this study a number of two components acrylic structural adhesives were prepared. The two components which are called base and accelerator. The base part contains methyl methacrylate (MMA) (50 wt%), cumene hydroperoxide (0.5 wt %), ethylene glycol dimethacrylate as crosslinker (1.5 wt%), methacrylic acid (18 wt%) and 30 wt% of a raw rubber ( i.e., poly (Chloroperen), poly (Acrylonitrile Butadiene), poly (Chlorosulphonated Polyethylene) and natural rubber) as toughening agent. The accelerator part consists of N,N–dimethylaniline (60 wt%), butanalaniline (39 wt%) and Saccharin cupric salt (1 wt%). Butyralaniline was prepared in this work as powder, by reaction of aniline and butyraldehyde at room temperature in Stoichiometric ratio. Aluminium as metal substrate was pretreated mechanically and chemically accorrding to ASTM standard method. The two components of each adhesive using equal weight the components was mixed for one minute at room temperature. The mixed adhesive was a viscouse liquid was immediately applied on the aluminium surface to for a uniform film. Then, the second aluminium plate specimen was fitted on the substrate containnig adhesive layer. The two joint substrate were under a 250g load for 24h. During This time the curing was occurred and the adhesive layer was set. The kinetics of curing was investigated using a differential scanning calorimetric (DSC) by plotting degree of crosslink versus time. The degree of cure was followed by DSC dynamic experiments for different adhesives. The sample containing oly (Chloroperen) showed the highest crosslinking (65 %) at 2 min curing time. Scanning electron microscopy (SEM) micrographs of the adhesive with poly (Chloroperen) howed that rubber particle shape was spherical and size of them was between 0.7- 4.5 µm. Lap shear and peeling tests used to determine the strength of adhesive joints of the this sample. Lap shear strength and peeling strength of the sample were 14.9 MPa and 5.97 N/mm respectively. The effect of humidity ( 31 %) of the environment was studied on the sample containing poly (Chloroperen). The results of showed that the durability was higher for surfaces treated with sulfo-ferric etchant (P2 etch) than other surface treatments. The results methacrylic structural adhesive contain oly (Chloroperen) indicate that specimens surface treatment maintained 80% residual strength higher than non-treatment surface on humidity environment condition (room temperature at 31% RH). The lap shear strength of adhesive joints was determined at several time intervals during exposure to three different environments at two temperatures. The specimens were immersed into aqueous environments (deionized water and saline solution) or exposed to the humid environment at 25 and 50 ? C. The joints exposed to those immersed in deionized water and 5 wt% Nacl solution showed a higher reduction in adhesive strength. A significant percentage of its initial strength after 30 days was retained. The residual strength decreases below 50 percent after 10 days and drops to approximately 25 percent after 30 days. Lap shear of aging of methacrylic structural adhesive contain oly (Chloroperen) at 25 ? C for 240 hour data showed that strength 20 percent decreased in aqueous condition and 55 percent decreasd for saline solution and for 50 ? C, data showed 10 percent decreased for aqueous condition. Keyword : Structural acrylic adhesives, Lap-shear, peel, strength, surface treatment, adhesion, curing.