Polymethacrylate/graphene nano composite polymer pour point reducer and preparation method thereof

A technology of polymethacrylate and methacrylate, which is applied in the field of biomass energy additives, can solve the problems such as the ineffective pour point depressing effect, and achieve the effect of improving low-temperature performance and low-temperature fluidity of diesel oil

Active Publication Date: 2017-07-25
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of purposes of the present invention is to provide a kind of preparation method of polymethacrylate / graphene nanocomposite polymer pour point depressant in order to improve the shortcoming that traditional polymer pour point depressant has not obvious pour point depressant, make the pour point depressant more diverse development

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A polymethacrylate / graphene nanocomposite polymer pour point depressant, which is prepared by a method comprising the following steps:

[0028] (1) Synthesis of graphene oxide: Mix 0.5g of graphite powder with 60ml of concentrated sulfuric acid, add 0.5g of sodium nitrate, and slowly add potassium permanganate dropwise, stir overnight, remove unreacted graphite in the upper solution Then add the mixed solution into a beaker with 250ml of distilled water and stir, cool to room temperature, then add 10ml of hydrogen peroxide with a mass fraction of 30%, to obtain a bright yellow graphene oxide solution, wash and centrifuge for 3 to 5 times, and finally freeze-dry for 3 Days, that is, foamy graphene oxide;

[0029] (2) Polymerization of methacrylate: get a certain amount of graphene oxide and join in DMF, ultrasonic dispersion 30min makes suspension, add the methacrylate of 0.2mol and the benzoyl peroxide of 1g as initiator, in N 2 Under the atmosphere of 80 ℃ for 6 hour...

Embodiment 2

[0041] A polymethacrylate / graphene nanocomposite polymer pour point depressant, which is prepared by a method comprising the following steps:

[0042] (1) Synthesis of graphene oxide: Mix 0.5g of graphite powder with 60ml of concentrated sulfuric acid, add 0.5g of sodium nitrate, and slowly add potassium permanganate dropwise, stir overnight, remove unreacted graphite in the upper solution Then add the mixed solution into a beaker with 250ml of distilled water and stir, cool to room temperature, then add 10ml of hydrogen peroxide with a mass fraction of 30%, to obtain a bright yellow graphene oxide solution, wash and centrifuge for 3 to 5 times, and finally freeze-dry for 3 Days, that is, foamy graphene oxide;

[0043] (2) Polymerization of methacrylate: get a certain amount of graphene oxide and join in DMF, ultrasonic dispersion 30min makes suspension, add the methacrylate of 0.2mol and the benzoyl peroxide of 1g as initiator, in N 2 Under the atmosphere of 80 ℃ for 6 hour...

Embodiment 3

[0060] The difference from Example 1 is that;

[0061] The pour point depressant used in the reaction in the preparation step (2) of the polymethacrylate / graphene nanocomposite polymer pour point depressant is cetyl methacrylate;

[0062] The mass ratio of graphene oxide used in the above-mentioned reaction and methacrylate is 1:20666;

[0063] Others are identical with embodiment 1;

[0064] The above-mentioned polyhexadecyl methacrylate / graphene nanocomposite polymer pour point depressant is preferably added at a mass ratio of 0.1%, and added to 0# diesel oil. Compared with 0# diesel oil, it contains polyhexadecyl methacrylate The cold filter point and condensation point of diesel oil with ester / graphene nanocomposite polymer pour point depressant decreased by 7°C and 14°C, respectively.

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Abstract

The invention discloses a polymethacrylate/graphene nano composite polymer pour point reducer and a preparation method thereof. The method comprises the following steps: (1) ultrasonically dispersing graphene oxide in an organic solvent to obtain a suspension; then adding methacrylate and an initiator into the suspension, and performing a polymerization reaction at 70 to 90 DEG C in an inert atmosphere to obtain a viscous material; and (2) adding a reducing agent into the viscous material to reduce the graphene oxide, and after the reaction is ended, performing the after-treatment to obtain the polymethacrylate/graphene nano composite polymer pour point reducer. The preparation method is simple and feasible, easy in operation, and high in safety; the obtained pour point reducer is stable in performance and excellent in pour point reduction effect; and moreover, the graphene has flammability, does not block a filter screen of an engine, and is not deposited at the bottom of the engine. The polymethacrylate/graphene nano composite polymer pour point reducer is applied to Number-0 diesel, and a cold filter plugging point and a condensation point of the number-0 diesel can be respectively decreased by 6 to 15 DEG C and 12 to 23 DEG C.

Description

technical field [0001] The invention specifically relates to a polymethacrylate / graphene nanocomposite polymer pour point depressant and a preparation method thereof, belonging to the technical field of biomass energy additives. Background technique [0002] 0# diesel oil is a distillate fuel from petroleum, mainly containing C8 ~ C30 hydrocarbon chain mixture. Paraffins have a significant impact on the transport of diesel and the operability of diesel engines. At low temperature, the solubility of the paraffins decreases, so the paraffins tend to separate from the oil. Due to the van der Waals force, the paraffins of paraffin attract each other, and paraffin crystals are finally formed. As the temperature decreases, paraffin crystals grow gradually, eventually forming a three-dimensional network structure that wraps the flowing diesel, causing low-temperature flow problems. [0003] Polymer / inorganic nanocomposites or nanohybrid materials have become a research hotspot in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/192C10L1/04C10L10/14
CPCC10L1/04C10L1/192C10L10/14C10L2270/026
Inventor 韩生赵志成颜松薛原周嘉伟许广文刘平连俊陈达明廉翔陈红艳蔺华林韩治亚
Owner SHANGHAI INST OF TECH
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