A kind of rubber-based composite material and preparation method thereof
A composite material, rubber-based technology, applied in metal material coating process, ion implantation plating, coating and other directions, can solve problems such as poor adhesion between rubber and carbon film, avoid adverse effects, ensure high bearing capacity, Simple preparation process
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Embodiment 1
[0034] Example 1 The preparation process of the rubber-based composite material includes the following steps: Al targets and SiC targets are used as cathode targets, and high-vacuum multifunctional magnetron sputtering ion coating equipment is used.
[0035] (1) Cut 300×300×2mm black nitrile rubber sheet (surface finish Ra2 Soak the rubber sheet in 60°C soap solution for 30 minutes to remove the grease and dirt on the rubber surface; then take it out and soak it in 90-95°C distilled water for 30 minutes to remove the possible residual soap solution; After blowing dry with nitrogen, place it in a drying oven at 120°C and dry for 20 minutes to evaporate the residual moisture on the rubber surface. The above process was repeated 5 times.
[0036] (2) After the rubber sheet is cooled to room temperature, clamp it on the sample tray and hang it on the turntable of the coating equipment, close the vacuum chamber door, turn on the mechanical pump to pump the vacuum to 5Pa, and then t...
Embodiment 2
[0040] Example 2 The preparation process of the rubber-based composite material includes the following steps: the cathode target adopts Cu target and WC target
[0041] (1) The rubber cleaning steps are the same as in Example 1. Among them: the rubber is silicone rubber, and its surface roughness Ra<200 nm.
[0042] (2) to (3) are the same as in Example 1.
[0043](4) After the treatment, when the temperature of the substrate drops to room temperature, turn on the turret to rotate and suspend the sample disk in front of the cathode Cu metal target. For the junction layer, the Cu target current is 1A, the duty cycle is 60%, the frequency is 60KHz, the deposition time is 20min, and the substrate bias is -300V; after the deposition, continue to revolve the turntable until the sample disk hovers in front of the WC target , adjust the argon gas flow rate to 120sccm, turn on the target to deposit hard WC ceramic layer, where the target current is 5A, the duty cycle is 60%, the fre...
Embodiment 3
[0045] Embodiment 3 performance test
[0046] X-CUT method was used to evaluate the bonding force of the rubber-based composite material of the present invention (hereinafter referred to as multi-layer carbon film), and the comparison sample was: a carbon film was directly deposited on the rubber surface (hereinafter referred to as single-layer carbon film). The results show that the single-layer carbon film is obviously peeled off ( figure 2 a), while the multilayer carbon film is well bonded and no detachment is observed ( figure 2 b);
[0047] A friction and wear testing machine is used to evaluate the friction and bearing capacity of the rubber-based composite material of the present invention. The friction conditions are: ball-disk rotation mode, the normal load is 15N, the friction couple is φ6mm GCr15 steel ball, and the test environment is the atmosphere. The results show that the single-layer carbon film is obviously broken during the friction process ( Figure ...
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