The Effect Of FRP Gluability With Cold Plasma Pretreatment On BF/CF Surface

FRP is a kind of high-performance material which is made of fiber and resin matrix. It is important to promote the physical mechanical properties by improving the glueing interface between fiber and resin matrix. This dissertation adopts the method of using cold plasma to trigger acrylic monomer to graft to do surface treatment of basalt fiber (BF) and carbon fiber (CF), and studies the effects of process times of cold plasma, concentration of acrylic solution, temperature, and process time on mechanical properties of B-FRP and C-FRP. It also adopts the method of using cold plasma to trigger maleic anhydride monomer to graft to do surface treatment of BF and CF, and studies the differences before and after processing of B-FRP and C-FRP. The main conclusions are showed below::(1) By studying using cold plasma to trigger acrylic monomer to graft to affect fiber surface, I make the conclusion:acrylic is successfully grafted on BF surface. After process, the rising range of C/Si on BF surface is 67.3%, and the rising range of oxygen element is 36.7%. I make the orthogonal test to process BF and CF with four factors as process times of cold plasma, concentration of acrylic solution, temperature, and process time and three levels. By analyzing the result of fiber contact angle, I make the result that the optimized process parameters of promoting BF surface activity are 5 times of cold plasma process,0.3mol/L of acrylic solution,20℃ of temperature, and 1 hour of process time. The optimized process parameters of promoting CF surface activity are 5 times of cold plasma process, 0.3mol/L of acrylic solution,20℃ of temperature, and 3 hours of process time.(2) I studied the effect on B-FRP mechanical property by using cold plasma to trigger acrylic monomer to graft on BF. Via the orthogonal test, I make the result that the optimized process parameters are 5 times of cold plasma process,0.3mol/L of acrylic solution,20℃of temperature, and 3 hour of process time. The replication experiment which uses the optimized process parameters shows that every mechanical properties of B-FRP are improved significantly, and SEM characterization of B-FRP fracture surface shows that BF and resin integrate closely.(3) I studied the effect on C-FRP mechanical property by using cold plasma to trigger acrylic monomer to graft on CF. Via the orthogonal test, I make the result that the optimized process parameters are 5 times of cold plasma process,0.4mol/L of acrylic solution,20℃ of temperature, and 2 hour of process time. The replication experiment which uses the optimized process parameters shows that every mechanical properties of C-FRP are improved significantly, and SEM characterization of C-FRP fracture surface shows that BF and resin integrate closely..(4) I studied the effect on FRP glueing property by using cold plasma to trigger maleic anhydride monomer to graft. Via the contrast test, I make the result that after process, the tensile property, bending property and shear property of B-FRP and C-FRP are all improved.