Moisture-proof and salt-mist corrosion-resistant conductive rubber and preparation method thereof
A technology of conductive rubber and salt spray resistance, which is applied to the preparation of the conductive rubber. The conductive rubber with salt spray corrosion resistance has the field of moisture resistance, and can solve the problem of reducing the shielding efficiency of conductive rubber, poor contact of conductive powder, and reduced electromagnetic shielding function. and other problems, to achieve the effect of improving the anti-salt spray corrosion performance, improving the anti-salt spray corrosion performance, and compact structure
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Embodiment 1
[0021] Take 1g of KH-550, 1g of KH-560 and 0.5g of S-3046, mix them, and evenly disperse them in 500mL of 95% ethanol aqueous solution to make a coupling agent solution. Add 500 g of silver-plated aluminum conductive powder to the solution, stir for 0.5 hour, and vacuum dry at 0.09 MPa and 95° C. for 2 hours to obtain a conductive powder coated with a composite coupling agent.
[0022] Add 170g of methyl vinyl kneading silicone rubber to the rollers of the open double-roller rubber mixing machine, add 500g of conductive powder coated with a composite coupling agent after wrapping, knead for 30 minutes, thin pass 10 times, add 3.5g vulcanizing agent Shuangerwu, and then mix Botong 10 times. The mixed material is rolled down and the sheet is unloaded, vulcanized on a flat vulcanizing machine at 15MPa, 170°C for 15 minutes, and vulcanized in an oven at 200°C for 240 minutes, and molded to form a conductive rubber.
[0023] The properties of the prepared conductive rubber were te...
Embodiment 2
[0031] Take 3g of KH-550, 3g of KH-560, and 2.5g of S-3046, mix them, and evenly disperse them in 500mL of 95% ethanol aqueous solution to make a coupling agent solution. Add 500 g of silver-plated aluminum conductive powder to the solution, stir for 0.5 hour, and vacuum dry at 0.09 MPa and 95° C. for 2 hours to obtain a conductive powder coated with a composite coupling agent.
[0032] Add 153g of methyl vinyl kneading silicone rubber to the rollers of the open double-roller rubber mill, and add 452g of conductive powder coated with a composite coupling agent after wrapping the rolls. After mixing for 30 minutes, divide the above mixture into The two parts were mixed separately and thin-passed 10 times respectively. One part was added with 2.5g of platinum vulcanizing agent component A, and the other was added with 1g of platinum vulcanizing agent component B, and then mixed separately for 10 times.
[0033] The two parts are kneaded together, the kneaded material is rolled d...
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