Parallel-arranged graphene ceramic high-performance friction material and low-cost preparation method
A technology of parallel arrangement and friction materials, which is applied in the field of high-performance friction materials and low-cost preparation of parallel arrangement graphene ceramics, can solve the problems of uneven distribution of graphene, high raw material prices, unevenness, etc., and achieves easy industrial application and automatic Excellent lubricity and improved mechanical properties
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Embodiment 1
[0030] Example 1: Preparation of parallel aligned graphene / SiO 2 The specific steps of ceramic composite materials are:
[0031] (1) Using expandable graphite and tetraethyl orthosilicate which is liquid at normal temperature as raw materials, weigh them respectively according to the mass ratio of 1:380;
[0032] (2) heating the expandable graphite at normal pressure and 800°C for 20s to obtain expanded graphite;
[0033] (3) the expanded graphite that above-mentioned step (2) obtains and raw material orthosilicate ethyl ester are placed in the same container, ceramics orthosilicate ethyl ester is completely infiltrated expanded graphite, and vacuum defoaming 30min under vacuum tightness 8Pa, obtain A solid-liquid mixture composed of expanded graphite and tetraethyl orthosilicate;
[0034] (4) The solid-liquid mixture of the above step (3) is magnetically stirred, the stirring power is 100W, the rotating speed is 1200r / min, and the stirring time is 2.5h to obtain a suspensio...
Embodiment 2
[0040] Embodiment 2: prepare parallel arrangement graphene / Al 2 o 3 The specific steps of ceramic composite materials are:
[0041] (1) Using expandable graphite and aluminum ethoxide that is liquid at room temperature as raw materials, weigh them respectively according to the mass ratio of 1:300;
[0042] (2) Heat the expandable graphite at normal pressure and 900°C for 25s to obtain expanded graphite;
[0043] (3) The expanded graphite obtained in the above step (2) and the raw material aluminum ethoxide are placed in the same container, so that the ceramic aluminum ethoxide is completely infiltrated with the expanded graphite, and vacuum degassing for 20min at a vacuum degree of 10Pa to obtain the expanded graphite A solid-liquid mixture composed of graphite and aluminum ethoxide;
[0044] (4) The solid-liquid mixture of the above step (3) is magnetically stirred, the stirring power is 150W, the rotating speed is 1300r / min, and the stirring time is 3h to obtain the suspe...
Embodiment 3
[0050] Embodiment 3: Prepare parallel arrangement graphene / ZrO 2 The specific steps of ceramic composite materials are:
[0051] (1) Using expandable graphite and liquid zirconium isopropoxide at room temperature as raw materials, weigh them respectively according to the mass ratio of 1:240;
[0052] (2) heating the expandable graphite at normal pressure and 950°C for 20s to obtain expanded graphite;
[0053] (3) the expanded graphite that above-mentioned step (2) obtains and raw material zirconium isopropoxide are placed in the same container, ceramic zirconium isopropoxide is completely infiltrated expanded graphite, and vacuum defoaming 15min under vacuum tightness 12Pa, obtain by expanding A solid-liquid mixture composed of graphite and zirconium isopropoxide;
[0054] (4) The solid-liquid mixture of the above step (3) is magnetically stirred, the stirring power is 180W, the rotating speed is 1400r / min, and the stirring time is 4h, to obtain a suspension in which graphen...
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