Preparation method and application of coupled modified nanometer yttrium oxide

A technology of nano-yttrium oxide and yttrium oxide, which is applied in the petroleum industry, lubricating compositions, etc., to achieve good extreme pressure effects

Inactive Publication Date: 2012-06-20
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, overcoming the shortcomings of nanoparticles that are easy to agglomerate and non-oil-soluble limits their stable performance, so it is of great significance to develop inorganic-organic nanocomposite rare earth-based additives

Method used

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  • Preparation method and application of coupled modified nanometer yttrium oxide
  • Preparation method and application of coupled modified nanometer yttrium oxide
  • Preparation method and application of coupled modified nanometer yttrium oxide

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Weigh nanometer yttrium oxide and ultrasonically disperse it in toluene solvent. Continue to add 0mL / g (Y 2 o 3 ) (this unit represents the volumetric amount of glacial acetic acid that needs to be added per gram of yttrium oxide, hereinafter the same) the amount of glacial acetic acid and silane coupling agent vinyltrimethylsilane, the ratio of yttrium oxide and silane coupling agent quality is 10: 2. Stir and react at 60°C for 2 hours, then centrifuge, use a Soxhlet extractor to extract homopolymers and unreacted monomers, and obtain silane coupling agent-modified yttrium oxide after vacuum drying. Then take the yttrium oxide modified by the silane coupling agent, and ultrasonically disperse it in toluene. The initiator azobisisobutyronitrile and the monomer methyl acrylate were respectively dissolved in toluene, the mass ratio of yttrium oxide to the monomer was 1:4, and the amount of the initiator was 0.4% relative to the mass of the monomer. Heated to 75°C under...

Embodiment 2

[0021] Weigh nanometer yttrium oxide and ultrasonically disperse it in toluene solvent. Continue to add 0.5mL / g (Y 2 o 3 ) amount of glacial acetic acid and silane coupling agent vinyltrimethylsilane, the mass ratio of yttrium oxide to silane coupling agent is 10:2, stirred and reacted at 90°C for 6h, then centrifuged, and extracted with a Soxhlet extractor The polymer and unreacted monomers are vacuum-dried to obtain yttrium oxide modified by a silane coupling agent. Then take the yttrium oxide modified by the silane coupling agent, and ultrasonically disperse it in toluene. The initiator azobisisobutyronitrile and the monomer methyl acrylate were respectively dissolved in toluene, the mass ratio of yttrium oxide to the monomer was 1:20, and the amount of the initiator was 2% relative to the mass of the monomer. Heated to 75°C under a nitrogen atmosphere, slowly added the initiator and reacted with the monomer for 5 hours, then centrifuged, extracted the homopolymer and un...

Embodiment 3

[0023] Weigh nanometer yttrium oxide and ultrasonically disperse it in toluene solvent. Continue to add 0.2mL / g (Y 2 o 3 ) amount of glacial acetic acid and silane coupling agent vinyltrimethylsilane, the mass ratio of yttrium oxide to silane coupling agent is 10:4, stirred and reacted at 70°C for 4h, then centrifuged, and extracted with a Soxhlet extractor The polymer and unreacted monomers are vacuum-dried to obtain yttrium oxide modified by a silane coupling agent. Then take the yttrium oxide modified by the silane coupling agent, and ultrasonically disperse it in toluene. The initiator azobisisobutyronitrile and the monomer methyl acrylate were respectively dissolved in toluene, the mass ratio of yttrium oxide to the monomer was 1:12, and the amount of the initiator was 1.3% relative to the mass of the monomer. Heated to 75°C under a nitrogen atmosphere, slowly added the initiator and reacted with the monomer for 3 hours, then centrifuged, extracted the homopolymer and ...

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Abstract

The invention discloses a preparation method and application of coupled modified nanometer yttrium oxide. The preparation method comprises the following steps that: the nanometer yttrium oxide is weighed and is added into methylbenzene, and ultrasonic dispersion is carried out; glacial acetic acid and silane coupling agents are added, the materials are stirred for taking reaction, then, centrifugal separation is carried out, homopolymers and unreacted monomers are extracted, and vacuum drying is carried out for obtaining the silane coupling agent modified yttrium oxide; then, the silane coupling agent modified yttrium oxide is taken, methylbenzene is added, and the ultrasonic dispersion is carried out; initiating agents azodiisobutyronitrile and monomer methyl acrylate are heated to 75 DEG C in nitrogen gas atmosphere, the initiating agents are slowly added to take reaction with the monomers, then, the centrifugal separation is carried out, the homopolymers and the unreacted monomers are extracted, and the coupled grafted modified nanometer yttrium oxide is obtained after the vacuum drying; the modified nanometer yttrium oxide is used as an extreme-pressure wear-resistant and abrasion-reduction additive to be ultrasonically dispersed into liquid paraffin wax base oil or finished product lubricating oil; and good extreme-pressure wear-resistant and abrasion-reduction effects are shown.

Description

technical field [0001] The invention relates to a preparation method of coupled graft modified nanometer yttrium oxide and its application as extreme pressure, anti-wear and friction-reducing additives. Background technique [0002] Lubricants are an essential part of the proper operation and maintenance of machinery. According to estimates, 1 / 3 to 1 / 2 of the world's production energy is lost due to friction and wear. Therefore, it is of great significance to improve the anti-wear and anti-friction performance of lubricating oil. In order to improve the performance of lubricating oil, it is essential to add various lubricating oil additives with different functions to the lubricating oil. The use of lubricating oil additives not only meets the requirements of various new machinery and engines, but also prolongs the service life of lubricating oil and improves the quality of lubricating oil. Its own consumption, operation and maintenance have brought great benefits. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F292/00C10M155/02C10N30/06
Inventor 余林张林孙明成晓玲刁贵强郝志峰余坚
Owner GUANGDONG UNIV OF TECH
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