Silane coupling agent modified artificial graphite resin-based brake pad and manufacturing method thereof
A silane coupling agent, artificial graphite technology, applied in chemical instruments and methods, friction linings, mechanical equipment, etc., can solve the problem of less hydroxyl structure on the surface of graphite, porous adsorption structure easy to adhere to pollute the hub, poor thermal recession stability, etc. It can improve the physical and chemical properties of the surface, facilitate large-scale promotion and application, and achieve the effect of small fluctuation of friction coefficient.
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[0029] A preparation method of a silane coupling agent modified artificial graphite resin-based brake pad is characterized in that it comprises the following steps:
[0030] 1) Modification: Use hydrochloric acid to prepare a silane coupling agent solution with a pH of 3-5 and a mass fraction of 3-4%, and stir at room temperature for 40-60 minutes to hydrolyze the silane coupling agent; The solution was added dropwise to the artificial graphite at a mass ratio of 3:10 and stirred for 8-10 minutes, and then dried at 110-130°C for 150-200 minutes. After drying, the silane coupling agent modified artificial graphite was obtained;
[0031] Preferably, the specific modification operation in the step 1) is to prepare a solution of a silane coupling agent with a pH of 4 and a mass fraction of 3% with hydrochloric acid, and stir at room temperature for 50 minutes to hydrolyze the silane coupling agent; The silane coupling agent solution was added dropwise to the artificial graphite at a ma...
Example Embodiment
[0042] Example 1
[0043] A silane coupling agent modified artificial graphite resin-based brake pad. Its material formula is calculated by mass percentage: resin / rubber 5%, ceramic / mineral fiber 25%, aramid fiber 1%, potassium titanate whisker 18%, Steel fiber 20%, copper fiber 5%, antimony sulfide 3%, artificial graphite 6%, chromite 1%, pyrite 1%, modified alumina 2%, organic friction powder 2%, silane coupling agent 1 %, mineral filler 10%. The modified alumina is silane modified alumina. The mineral filler is a mixture of cryolite (1%), light high-moisture clay (2%), precipitated barium sulfate (6%), and cyanide (1%).
[0044] A preparation method of a silane coupling agent modified artificial graphite resin-based brake pad includes the following steps:
[0045] 1) Modification: Use hydrochloric acid to prepare a silane coupling agent solution with a pH of 3 and a mass fraction of 3%. Stir at room temperature for 60 minutes to hydrolyze the silane coupling agent; make the pre...
Example Embodiment
[0051] Example 2
[0052] A silane coupling agent modified artificial graphite resin-based brake pad. The material formula is calculated by mass percentage: resin / rubber 12%, ceramic / mineral fiber 10%, aramid fiber 4%, potassium titanate whisker 4 %, steel fiber 10%, copper fiber 5%, antimony sulfide 3%, artificial graphite 16%, chromite 2%, pyrite 5%, modified alumina 8%, organic friction powder 5%, silane coupling Agent 1%, mineral filler 15%. The modified alumina is silane modified alumina. The mineral filler is a mixture of cryolite (2%), light high-moisture clay (3%), precipitated barium sulfate (8%), and cyanide (2%).
[0053] A preparation method of a silane coupling agent modified artificial graphite resin-based brake pad includes the following steps:
[0054] 1) Modification: Prepare a silane coupling agent solution with a pH of 5 and a mass fraction of 4% with hydrochloric acid, and stir at room temperature for 60 minutes to hydrolyze the silane coupling agent; the prepa...
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