Superelastic nickel-titanium alloy-elastic resin composite and superelastic nickel-titanium alloy substrate and preparation method and electronic product casing
A technology of nickel-titanium alloy and elastic resin, applied in the direction of metal casing, telephone structure, etc., to achieve the effect of high strength, high structural stability, and high bonding strength
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Embodiment 1
[0092] (1) Pretreatment
[0093] Cut the SMA superelastic nickel-titanium shape memory alloy plate (purchased from Dongguan Guangshengda Hardware Co., Ltd.) with a thickness of 0.8mm into rectangular pieces of 15mm×80mm, put it into a polishing machine, polish it, and then remove it sequentially. Oil, water washing and drying to obtain a superelastic nickel-titanium alloy sheet.
[0094] (2) Surface treatment
[0095] (2.1) First etching step
[0096] The superelastic nickel-titanium alloy sheet obtained in step (1) was soaked in 500 mL of etching solution at 25° C. for 120 minutes, then the superelastic nickel-titanium alloy sheet was taken out and washed three times with deionized water. Wherein, the etching solution is hydrochloric acid with a concentration of 10% by weight.
[0097] (2.2) Second etching step
[0098] The superelastic nickel-titanium alloy sheet obtained in step (2.1) was soaked in 500 mL of etching solution at 25° C. for 60 minutes, then the superelast...
Embodiment 2
[0121] (1) Adopt the method same as embodiment 1 step (1) to carry out pretreatment.
[0122] (2) Surface treatment
[0123] (2.1) First etching step
[0124] Place the superelastic nickel-titanium alloy sheet obtained in step (1) in 500 mL of etching solution and soak for 240 minutes at 15° C., then take out the superelastic nickel-titanium alloy sheet and wash it three times with deionized water. Wherein, the etching solution is hydrochloric acid with a concentration of 5% by weight.
[0125] (2.2) Second etching step
[0126] The superelastic nickel-titanium alloy sheet obtained in step (2.1) was soaked in 500 mL of etching solution at 25° C. for 45 minutes, then the superelastic nickel-titanium alloy sheet was taken out and washed three times with deionized water. Then put it into an oven and dry it at 65° C. to obtain a surface-treated superelastic nickel-titanium alloy sheet. Wherein, the etching solution is a mixed aqueous solution of sodium hydroxide and disodium h...
Embodiment 3
[0130] (1) Adopt the method same as embodiment 1 step (1) to carry out pretreatment.
[0131] (2) Surface treatment
[0132] (2.1) First etching step
[0133] The superelastic nickel-titanium alloy sheet obtained in step (1) was soaked in 500 mL of etching solution at 35° C. for 90 minutes, then the superelastic nickel-titanium alloy sheet was taken out and washed three times with deionized water. Wherein, the etching solution is hydrochloric acid with a concentration of 15% by weight.
[0134] (2.2) Second etching step
[0135] The superelastic nickel-titanium alloy sheet obtained in step (2.1) was soaked in 500 mL of etching solution at 35° C. for 90 minutes, then the superelastic nickel-titanium alloy sheet was taken out and washed three times with deionized water. Then put it into an oven and dry it at 65° C. to obtain a surface-treated superelastic nickel-titanium alloy sheet. Wherein, the etching solution is a mixed aqueous solution of sodium hydroxide and sodium car...
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