Stable silicone oil based magnetic rheologic liquid, and preparation method
A technology of magnetorheological fluid and silicone oil, applied in magnetic fluid, inductance/transformer/magnet manufacturing, electrical components, etc., can solve the problems of poor suspension stability, easy oxidative deterioration and agglomeration, and achieve low cost and anti-oxidation. Good and significant magnetorheological effect
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Embodiment 1
[0036] Prepare 100g of silicone oil-based magnetorheological fluid, the preparation steps are:
[0037] Step 1, adding 2g (2%) surfactant sodium dodecylbenzenesulfonate to 20g (20%) silicone oil, stirring and mixing at room temperature for 3 hours to obtain a mixture;
[0038] Step 2, adding 0.5g (0.5%) antioxidant sodium nitrite to the mixture obtained in step 1, stirring and mixing at room temperature for 3 hours to obtain the mixture;
[0039] Step 3, adding 0.5g (0.5%) thixotropic agent nano magnesium lithium silicate to the mixture obtained in step 2, stirring and mixing at room temperature for 3 hours to obtain the mixture;
[0040] Step 4, adding 2g (2%) antiwear graphite to the mixture obtained in step 3, and stirring and mixing at room temperature for 4 hours to obtain a silicone oil-based compound liquid carrier liquid;
[0041] Step 5. Add 75g (75%) of N-hexadecylethylenediaminetriacetic acid / carbonyl iron core-shell magnetic composite particles (with a particle si...
Embodiment 2
[0050] Prepare 100g of silicone oil-based magnetorheological fluid, the preparation steps are:
[0051] Step 1, adding 3g (3%) surfactant oleic acid into 15g (15%) silicone oil, stirring and mixing at room temperature for 4 hours to obtain a mixture;
[0052] Step 2, adding 0.3g (0.3%) antioxidant sodium benzoate to the mixture obtained in step 1, stirring and mixing at room temperature for 2 hours to obtain the mixture;
[0053] Step 3, adding 0.7g (0.7%) thixotropic polysaccharide to the mixture obtained in step 2, stirring and mixing at room temperature for 4 hours to obtain the mixture;
[0054] Step 4, adding 1g (1%) anti-wear agent nano-alumina powder to the mixture obtained in step 3, stirring and mixing at room temperature for 2 hours, to obtain a silicone oil-based compound carrier liquid;
[0055] Step 5. Add 80g (80%) of N-hexadecylethylenediaminetriacetic acid / carbonyl iron core-shell magnetic composite particles (with a particle size of 1 to 100 microns) to the s...
Embodiment 3
[0064] Prepare 100g of silicone oil-based magnetorheological fluid, the preparation steps are:
[0065] Step 1. Add 2g (2%) surfactant sodium polyether benzene sulfonate to 11g of silicone oil, stir and mix at room temperature for 3 hours to obtain a mixture;
[0066] Step 2, adding 0.2g (0.2%) antioxidant ethanolamine phosphate to the mixture obtained in step 1, stirring and mixing at room temperature for 2 hours to obtain the mixture;
[0067] Step 3, adding 0.3g (0.3%) thixotropic agent cellulose derivative to the mixture in step 2, stirring and mixing at room temperature for 2 hours to obtain the mixture;
[0068] Step 4. Add 1.5g (1.5%) anti-wear agent nano cerium oxide powder to the mixture obtained in step 3, and stir and mix at room temperature for 3 hours to obtain a silicone oil-based composite carrier liquid;
[0069] Step 5. Add 85g (85%) N-lauroyl ethylenediamine triacetic acid / carbonyl iron core-shell magnetic composite particles (with a particle size of 1 to 10...
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