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Graphene-hydrotalcite-like compound and preparation method and application thereof

A technology of hydrotalcite and graphene, which is applied in the field of graphene-hydrotalcite-like composites and its preparation, to achieve excellent anti-friction and anti-wear properties, high yield, and improved stability

Active Publication Date: 2017-06-20
北京奈泊科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is no report on the research on the compounding of graphene and hydrotalcite as a diesel engine oil additive

Method used

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  • Graphene-hydrotalcite-like compound and preparation method and application thereof
  • Graphene-hydrotalcite-like compound and preparation method and application thereof
  • Graphene-hydrotalcite-like compound and preparation method and application thereof

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Embodiment 1

[0038] Embodiment 1, graphene-magnesium aluminum hydrotalcite compound and its preparation method and application

[0039] 1. Preparation of graphene-magnesium aluminum hydrotalcite composites

[0040] 1) One-step preparation of organically modified hydrotalcites: aluminum hydroxide is used as the aluminum source, magnesium nitrate hexahydrate is used as the magnesium source, 0.3mol / L sodium hydroxide solution is used as the precipitating agent, and the organic modifier is sodium stearate . Keep the metal salt concentration in the reaction solution at 0.3mol / L, the molar ratio of magnesium to aluminum metal ions is 2:1, and the amount of organic modifier is the same as that of aluminum hydroxide. Configure a certain amount of magnesium salt solution and precipitant solution according to the above requirements. Weigh the required amount of aluminum hydroxide powder and modifier powder, place them in a polytetrafluoroethylene-lined reactor, and mix them evenly; add the magnesi...

Embodiment 2

[0057] Embodiment 2, graphene oxide-cobalt aluminum hydrotalcite compound and its preparation method and application

[0058] 1. Preparation of graphene oxide-organically modified cobalt-aluminum hydrotalcite composites

[0059] 1) One-step preparation of organically modified hydrotalcites: Aluminum hydroxide is used as aluminum source, cobalt nitrate hexahydrate is used as cobalt source, 0.2mol / L sodium hydroxide solution is used as precipitant, and organic modifier is sodium laurate. Keep the metal salt concentration in the reaction solution at 0.25mol / L, the molar ratio of cobalt-aluminum metal ions at 3:1, and the amount of organic modifier used is the same as the molar amount of aluminum hydroxide. Configure a certain amount of cobalt salt solution and precipitant solution according to the above requirements. Weigh the required amount of aluminum hydroxide powder and modifier powder, place them in a polytetrafluoroethylene-lined reactor, and mix them evenly; add the coba...

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Abstract

The invention discloses a graphene-hydrotalcite-like compound and a preparation method and an application thereof. The graphene-hydrotalcite-like compound is a compound of organic modified hydrotalcite and graphene. A graphene-hydrotalcite-like compound material is prepared for the first time and is taken as a diesel engine oil additive, so that the friction performance of the diesel engine oil is greatly improved; and moreover, the stability of the diesel engine oil is further improved. In addition, according to the preparation method of the graphene-hydrotalcite-like compound, the organic modified hydrotalcite is prepared by a one step hydrothermal method, and the method is simple and practical, and the prepared material is good in quality and high in yield.

Description

technical field [0001] The invention relates to a graphene-hydrotalcite-like compound and its preparation method and application, in particular to a graphene-hydrotalcite-like compound and its preparation method and its application as a diesel engine oil additive. Background technique [0002] As we all know, construction machinery is a typical machine with high energy consumption, poor emission and heavy pollution. For example, under the same working conditions and working hours, the exhaust gas emission of a 20t excavator is similar to that of 30 small cars. During the operation of construction machinery, the energy consumed by friction and wear accounts for 20%-25% of the total mechanical energy, of which the friction loss between the cylinder liner and the piston ring accounts for 45-55% of the total friction loss, and the consumption of the valve mechanism accounts for 7-15%, connecting rod bearing consumption accounts for 20-30%. The proportion of boundary and mixed l...

Claims

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Application Information

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IPC IPC(8): C10L1/30
CPCC10L1/30
Inventor 赵栋宋彦楠
Owner 北京奈泊科技有限公司
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