Preparation And Properties Of Broussonetia Papyrifera Fiber/ABS Composites

The use of materials is involved in almost all aspects of daily life and human activities.The research and development of materials promote the improvement of the livingstandards, while some types of new materials even turn out as time progressed. As thedevelopment of modern science and technologies, material needs to develop according topre-concerted performance materials, while composite materials solve the problem easily.Polymer matrix composites (PMC) are popular composite materials due to high standardsin design ability and machining performance. Natural plant fibers are mostly selected asthe reinforcement of Polymer matrix composites (PMC) with the awareness of low carbonenvironmental protection and sustainable development. Nature plant fibers provide highstrength, elastic modulus, specific strength, specific modulus and low density physicalperformances, meanwhile, they cost less and easy in fabrication. The fabricated Polymermatrix composites (PMC) with plant fiber reinforcement are light and have goodmechanical property, as well as much higher performance in renewable capability andbiodegradability comparing with inorganic fiber, all together reflect their splendidprospects before us.In recent years, the research of plant fiber reinforced Polymer matrix composites(PMC) more focused on wood plastic composite (WPC) materials with PF, PE, PP.Broussonetia papyrifera fiber (BrF) and ABS resin with good physical properties are fewreports on preparing composites. This thesis uses Broussonetia papyrifera fiber (BrF) asreinforcement, chooses ABS resin as matrix material, and prepares BrF/ABS compositesby melt compounding. It investigates the effects of pure Broussonetia papyrifera fiber (BrF)content on the mechanical properties of the composites; and through central compositedesign of Response surface methodology (RSM), it explores the interaction of two-factorstructure--the ABS oxazoline functional groups ABSm and Broussonetia papyrifera fiber(BrF) content--and the impact of that on mechanical properties of BrF/ABS compositematerials.Through the experiment of this thesis, the results show that without any treatment,simply mixing the Broussonetia papyrifera fiber (BrF) with ABS resin, with the amount offiber increase, its mechanical properties first rise and then decrease; within a certain range,BrF/ABS composite materials tensile strength and flexural strength meet the test of binaryquadratic equation obtained under two-factor interactions. When Broussonetia papyriferafiber (BrF) content is about30%, and ABSm is around6%, the tensile strength BrF/ABScomposite materials can achieve the maximum theoretically, about56.9Mpa; Broussonetiapapyrifera fiber (BrF) content and its bark interaction of ABS oxazoline functional group of the added amount of the bending strength of the two factors BrF/ABS compositematerials have a significant impact on both factors. When optimize conditions,Broussonetia papyrifera fiber (BrF) content is about40.18%, and ABSm is around6.64%，it can make bending strength of BrF/ABS composite materials reach93.45Mpa. TheABSm has a significant impact on the performance improvement of BrF/ABS compositematerials. When the amount of ABSm is added to around6%, the impact strength of theBroussonetia papyrifera fiber (BrF) to the ABS ratio of3:7which was prepared bycomposites can achieve maximum19.5KJ/m2,58.5%more than not add anything that canaffect the strength of the composite, greatly improve the situation that the BrF/ABScomposite materials toughness serious decline due to the poor compatibility between thetwo interfaces.