A kind of environmental response type water-based lubricant and preparation method thereof
A water-based lubricant and responsive technology, which is applied in the field of environment-responsive water-based lubricants and their preparation, can solve the problems of low water viscosity, difficult to form a lubricating film on the lubricating interface, and limited application, and achieve high lubricating performance. Effect
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Embodiment 1
[0023] Embodiment 1: A kind of environmental response type water-based lubricant
[0024] 1) Add 10mmol PEGA and 2mmol MSA to the reaction device, blow nitrogen into the bottle, then add 0.3mmol BIS, 0.2mmol cuprous bromide and 0.4mmol PMDETA, add 1g SDBS and 200ml water and stir to make it evenly mixed, then Add 0.2mmol ethyl 2-bromopropionate dropwise, and seal the reaction under nitrogen atmosphere for 4-6h to obtain a milky white microgel solution;
[0025] 2) Add 1 g of carboxylated graphene powder and a catalytic amount of DBU to step 1), and react at 40-50° C. for 3-5 hours to obtain a graphene-containing temperature-sensitive microgel;
[0026] 3) use the graphene-containing temperature-sensitive microgel prepared by deionized water dialysis, and obtain the microgel additive after 5-7 days of dialysis;
[0027] The concentration of chitosan is 20mg / ml, and sodium hydroxide is added to adjust the pH to 6 ± 0.2, and the chitosan aqueous solution is put into a dialysis b...
Embodiment 2
[0029] Example 2: A kind of environmental responsive water-based lubricant
[0030] 1) Add 10mmol PEGA and 6mmol MSA to the reaction device, pass nitrogen into the bottle, then add 0.3mmol BIS, 0.2mmol copper bromide and 0.4mmol PMDETA, add 1gNP-10 and 200ml water and stir to make it evenly mixed, Then 0.2mmol ethyl 2-bromopropionate was added dropwise, and the reaction was sealed under nitrogen atmosphere for 4-6h to obtain a milky white microgel solution;
[0031] 2) Add 1 g of carboxylated graphene powder and a catalytic amount of DBU to step 1), and react at 40-50° C. for 3-5 hours to obtain a graphene-containing temperature-sensitive microgel;
[0032] 3) use the graphene-containing temperature-sensitive microgel prepared by deionized water dialysis, and obtain the microgel additive after 5-7 days of dialysis;
[0033] The concentration of chitosan is 20mg / ml, and sodium hydroxide is added to adjust the pH to 6 ± 0.2, and the chitosan aqueous solution is put into a dialy...
Embodiment 3
[0035] Embodiment 3: A kind of environmental response type water-based lubricant
[0036] 1) Add 10mmol PEGA and 10mmol MSA to the reaction device, feed nitrogen into the bottle, then add 0.3mmol BIS, 0.2mmol cuprous bromide and 0.4mmol PMDETA, add 1g SDS and 200ml water and stir to make it evenly mixed, Then 0.2mmol ethyl 2-bromoisobutyrate was added dropwise, and the reaction was sealed under nitrogen atmosphere for 4-6h to obtain a milky white microgel solution;
[0037] 2) Add 1 g of carboxylated graphene powder and a catalytic amount of DBU to step 1), and react at 40-50° C. for 3-5 hours to obtain a graphene-containing temperature-sensitive microgel;
[0038] 3) Use the graphene-containing temperature-sensitive microgel prepared by dialysis with deionized water, and obtain the microgel additive after 5-7 days of dialysis;
[0039] The concentration of chitosan is 20mg / ml, and sodium hydroxide is added to adjust the pH to 6 ± 0.2, and the chitosan aqueous solution is put...
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