Mechanical Properties And Tribological Behavior Of Phenolic Resin Composites Filled With Biological Fibers

Reinforcement material is an important component of composite materials,which plays an extremely important roll in the properties of composite materials.The types of composite reinforced fibers include organic synthetic fiber,inorganic fiber and natural fiber,etc,and each of these reinforcing fibers has its own advantages and disadvantages.Research find that the synthetic fiber is an ideal reinforcing material because it has the same material properties in all aspects.In order to improve and control the physical and chemical properties of the composite materials,the biological fibers in the natural fibers were modified by surface modification and structural bionic design,so as to broaden the application field of the biological fibers.In this paper,the microfiber in the thin layer of bamboo fiber is determined as the bionic prototype of the bionic fiber,and the jute fiber which widely used in the textile industry as the raw material to prepare the jute helical fiber material.According to the principle of reinforcing mechanical properties of helical structure,the jute fiber has made into the helical structure by using bionic fiber knitting machine.At 63°,the helical jute fiber exhibits the best tensile properties.The effect of helical angle on tensile strength of three helical fibers satisfies the relationship of y=0.0002x4-0.0363x3+2.5934x2-58.188x.Structurally,It was found that the new composite fiber prepared by adding 5%fiber and 3 bundles of fiber with resin as matrix has the highest wear resistance.Finally,it was concluded that the new composite material taking resin as the matrix,the fiber structure of bamboo imitating 5%fiber was added to 63 °fiber with 3 bundles of fiber.shows excellent physical and chemical properties.In this chapter,ANSYS software is used to simulate the multiple tensile and compression tests of resin matrix composites under low energy conditions,and the tensile resistance of the composites is calculated by finite element method.The change of compressibility energy with fiber content is compared with the previous experimental results.The finite element analysis is in agreement with the experimental results.It is proved that the numerical model is reasonable and effective.At the same time,The stress distribution and failure mode in compression process of the tensile properties of composite materials with different structures are studied by finite element software.Finally,throu67h friction and wear experiments and SEM scanning sensing analysis,the fiber content and fiber type in the new composite are studied and also the effects of fiber rising angle and fiber bundle amount on the wear resistance of the composites were investigated.Finally the new composites were successfully prepared,which laid a theoretical foundation for the mass production of the new composites.