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Preparation method of multi-element nano composite material suitable for lean oil working condition

A technology of nano-composite materials and working conditions, applied in the field of composite materials, can solve the problems of self-lubricating composite materials, etc., and achieve the effects of reducing friction coefficient, improving friction and wear resistance, and inhibiting direct contact

Inactive Publication Date: 2021-03-12
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the relevant research and application of carbon nitride / hydrotalcite are concentrated in the fields of photocatalysis and other fields, and there is no related research on using it as a reinforcing filler in self-lubricating composite materials

Method used

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  • Preparation method of multi-element nano composite material suitable for lean oil working condition
  • Preparation method of multi-element nano composite material suitable for lean oil working condition
  • Preparation method of multi-element nano composite material suitable for lean oil working condition

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Example 1 A method for preparing a multi-component nanocomposite suitable for oil-lean conditions: first prepare hydrotalcite sheets and carbon nitride nanosheets; Carbonized carbon nanosheets are added to 99.8% epoxy resin, and the vacuum degree is -1×10 5 Stir and mix for 15 minutes at Pa and 1000r / min, then add curing agent, continue mixing at 3000r / min for 5 minutes to obtain the mixed liquid; finally, pour the mixed liquid into the mold and cure at 120°C for 4 hours to obtain Magnesium-aluminum hydrotalcite / carbon nitride modified epoxy resin-based composites.

[0027] Wherein: hydrotalcite nanosheets (LDHs) are prepared according to the following steps:

[0028] ⑴Magnesium nitrate (Mg(NO 3 ) 2 ·6H 2 O) dispersed in deionized water to obtain a solution A with a concentration of 0.01mol / L;

[0029] ⑵ Aluminum nitrate (Al(NO 3 ) 3 9H 2 O) dispersed in deionized water to obtain a solution B with a concentration of 0.01mol / L;

[0030] (3) Sodium hydroxide (NaO...

Embodiment 2

[0034]Example 2 A method for preparing a multi-component nanocomposite suitable for oil-lean conditions: first prepare hydrotalcite sheets and carbon nitride nanosheets; Carbonized carbon nanosheets are added to 80% epoxy resin, and the vacuum degree is -1×10 5 Stir and mix for 15 minutes at Pa, speed of 1000r / min, then add curing agent, and continue mixing for 5 minutes at a speed of 3000r / min to obtain the mixed liquid; finally, pour the mixed liquid into the mold and cure at 120°C for 8 hours to obtain Magnesium-aluminum hydrotalcite / carbon nitride modified epoxy resin-based composites.

[0035] Wherein: hydrotalcite nanosheets (LDHs), carbon nitride nanosheets are the same as in Example 1.

[0036] Tribological experiments were carried out on the above-mentioned composite materials, and the surface of the metal ring was pre-wetted with 5 μL PAO4 base oil with a microliter syringe to investigate the tribological properties of the epoxy resin-based composite materials under...

Embodiment 3

[0037] Example 3 A method for preparing a multi-component nanocomposite suitable for oil-poor working conditions: first prepare hydrotalcite sheets and carbon nitride nanosheets; then, by mass fraction, 2% hydrotalcite sheets and 8% nitrogen Carbonized carbon nanosheets are added to 94% epoxy resin, and the vacuum degree is -1×10 5 Stir and mix for 15 minutes at Pa, speed of 1000r / min, then add curing agent, and continue mixing for 5 minutes at a speed of 3000r / min to obtain the mixed liquid; finally, pour the mixed liquid into the mold and cure at 120°C for 5 hours to obtain Cobalt-zinc hydrotalcite / carbon nitride modified epoxy resin-based composites.

[0038] Wherein: hydrotalcite nanosheets (LDHs) are prepared according to the following steps:

[0039] ⑴ Zinc nitrate (Zn(NO 3 ) 2 ·6H 2 O) dispersed in deionized water to obtain a solution A with a concentration of 0.01mol / L;

[0040] (2) Cobalt nitrate (Co(NO 3 ) 2 ·6H 2 O) dispersed in deionized water to obtain a s...

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Abstract

The invention relates to a preparation method of a multi-element nano composite material suitable for lean oil working conditions. The method comprises the following steps: firstly, preparing hydrotalcite sheets and carbon nitride nanosheets; adding 0.1-10% by mass of hydrotalcite sheets and 0.1-10% by mass of carbon nitride nanosheets into 99.8%-80% by mass of epoxy resin, stirring and mixing for15 minutes under the conditions that the vacuum degree is -1 * 10 <5> Pa and the rotating speed is 1,000 r / min, adding a curing agent, and continuously mixing for 5 minutes at the rotating speed of 3,000 r / min to obtain mixed liquid; and finally, pouring the mixed liquid into a mold, and curing at 120 DEG C for 4-8 hours to obtain the self-lubricating composite material. The method is simple andfeasible, and the friction and wear resistance of the composite material can be improved.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a method for preparing a multi-element nanocomposite material suitable for lean oil working conditions. Background technique [0002] Polymer materials are widely used in the fields of automobiles, ships and industrial equipment due to their light weight, self-lubricating properties, high chemical stability and shock absorption and noise reduction. With the continuous development of equipment technology, more and more motion mechanisms are serving in more severe working conditions, such as higher load, speed and temperature. In addition, equipment such as high-end compressors, high-speed rotors, and needle roller bearings are frequently in poor oil conditions, and there are operating conditions such as insufficient supply of lubricating oil and discontinuous oil film, which make the moving mechanism in the mixed lubrication or even boundary lubrication range, resulting in solid...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K3/26C08K3/28C08K7/00
CPCC08K3/26C08K3/28C08K7/00C08K2201/011C08L63/00
Inventor 张嘎喻萍赵福燕李贵涛贺仁
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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