Bionic Structure Biology Fiber Reinforced Friction Material

Brake friction materials reinforce fiber mainly include glass fiber and organic syntheticfibers such as carbon fiber, aramid fiber, The properties of This fibers are uniform, they areideal reinforcing material. However, the raw material oil resources are depleted, while thefiber manufacturing process will consume a large amount of energy, the product of wear willpollute environment. Natural fibers are renewable, green non-toxic, and have a hugeproduction, natural fiber reinforce appropriate substrate can be made into completelydegraded friction material, this material will have a huge market space. Natural fiber withhigh strength can meet the mechanical properties, but it’s high temperature performance ispoor, modification and structural biomimetic can improve its properties and broaden thefield of bio-fiber applications.The appropriate modification of jute fibers is put jute fiber fully soak in to1:1methanol-benzene solution for24hours to remove some of the starch and wax. Then put in to cleanwater after pretreatment, and then soak it in sodium hydroxide solution (17%) modified theconcentration of alkali solution, soak for2hours, rinse with tap water to remove excessalkali solution, and then put it in to sulfuric acid (2%), and then put it in to sufficient amountof distilled water, this treatment can completely exclude the impact of acid-base. Finally, putjute fiber into electric oven temperature is140°C, heat for3hours.Use biomimetic helical fiber knitting machine spiral fiber into spiral jute fiber. Then useWDW-20microcomputer control electronic universal testing machine to test the fractureload of different helix angle, the results show that the spiral fiber breaking load decreaseswith the helix angle increased and then decreases, the peak at about66°. greater than66°fiber, fiber fracture one by one, when less than66°, face to the same external tensile force,the helix angle the smaller the greater the force of fiber. The threshold effect by fiber frictionfactor, curvature, and uniformity. Elongation with the helix angle decreases downward trend.This paper had a systematic analysis of spiral fiber content and the helix angle effect offriction performance, when the content of spiral jute fiber is3%, and helix angle is66°, thefriction factor can meet the braking requirements, and wear resistance is the mostoutstanding.Dumbbell fiber reinforced friction material who’s dumbbell spacing is15mm have the lowest wear rate.The fiber with Bionic structure will help to improve the enhancement of the fiber. Forjute whose force of combined with substrate interface is weak make great significance at alow temperatures (lower than200°C). Reinforced by the jute with bionic structure frictionmaterial is no longer so easy get fatigue crack between fiber and matrix. under hightemperature (300°C-350°C) Jute decomposition generated Graphite, which have aself-cleaning and self-lubricating effect, with the action of friction slip to fill into unevensurfaces, reduce the adhesive wear and the adhesive wear, effectively prevent bare glassfiber and the rigid prominent parts of the sharp, helps to reduce abrasive wear. Bionic jutefiber reinforced friction materials grinding coating friction material surface can reducefriction material contact with oxygen, reduce the heat wear at a certain extent. The generategraphite which have self-lubrication and self-cleaning effect is extremely beneficial forenhancing the performance of friction material.