Preparation method of copper/graphite/tin oxide electric contact material
A technology of electrical contact materials and tin oxide, applied in tin oxide, contacts, circuits, etc., can solve the problems of short life, poor material reliability, etc., achieve low contact resistance, strong anti-welding ability, and improve anti-ablation ability Effect
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[0045]Example 1
[0046]A preparation method of copper / graphite / tin oxide electrical contact material is specifically implemented according to the following steps:
[0047]Step 1. Prepare tin oxide particles;
[0048]The specific process of step 1 is:
[0049]Step 1.1. Fully dissolve hydrated tin chloride in the formaldehyde solution, and obtain a tin chloride solution after thorough stirring;
[0050]The concentration of tin chloride solution is 0.05 mol / L.
[0051]Step 1.2: Add polyethylene glycol and sodium hydroxide solution to the tin chloride solution prepared in step 1.1, and stir evenly to obtain a white turbid liquid;
[0052]Step 1.3. Quickly transfer the white turbid liquid to a sealed reaction kettle, and put it into an electric heating blast drying box for heat preservation;
[0053]The concentration of the sodium hydroxide solution is 0.01 mol / L, the molecular weight of polyethylene glycol is 600, and the addition amount of polyethylene glycol is 0.3 g.
[0054]Step 1.3 Put it into an electric h...
Example Embodiment
[0062]Example 2
[0063]A preparation method of copper / graphite / tin oxide electrical contact material is specifically implemented according to the following steps:
[0064]Step 1. Prepare tin oxide particles;
[0065]The specific process of step 1 is:
[0066]Step 1.1. Fully dissolve hydrated tin chloride in the formaldehyde solution, and obtain a tin chloride solution after thorough stirring;
[0067]The concentration of tin chloride solution is 0.07mol / L.
[0068]Step 1.2: Add polyethylene glycol and sodium hydroxide solution to the tin chloride solution prepared in step 1.1, and stir evenly to obtain a white turbid liquid;
[0069]Step 1.3. Quickly transfer the white turbid liquid to a sealed reaction kettle, and put it into an electric heating blast drying box for heat preservation;
[0070]The concentration of the sodium hydroxide solution is 0.013 mol / L, the molecular weight of polyethylene glycol is 600, and the addition amount of polyethylene glycol is 0.35 g.
[0071]Step 1.3 Put it into the electric...
Example Embodiment
[0079]Example 3
[0080]A preparation method of copper / graphite / tin oxide electrical contact material is specifically implemented according to the following steps:
[0081]Step 1. Prepare tin oxide particles;
[0082]The specific process of step 1 is:
[0083]Step 1.1. Fully dissolve hydrated tin chloride in the formaldehyde solution, and obtain a tin chloride solution after thorough stirring;
[0084]The concentration of tin chloride solution is 0.1 mol / L.
[0085]Step 1.2: Add polyethylene glycol and sodium hydroxide solution to the tin chloride solution prepared in step 1.1, and stir evenly to obtain a white turbid liquid;
[0086]Step 1.3. Quickly transfer the white turbid liquid to a sealed reaction kettle, and put it into an electric heating blast drying box for heat preservation;
[0087]The concentration of the sodium hydroxide solution is 0.015 mol / L, the molecular weight of polyethylene glycol is 600, and the added amount of polyethylene glycol is 0.4 g.
[0088]Step 1.3 Put it into an electric heat...
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