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Self-lubricating composite material as well as preparation method and application thereof

A composite material, self-lubricating technology, applied in the field of composite materials, can solve the problems of unsuitable self-lubricating materials, pure epoxy resin adhesive wear, etc., and achieve the effect of overcoming adhesive wear and good application prospects

Active Publication Date: 2020-04-28
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

However, pure epoxy resin is prone to adhesive wear during friction and is not suitable for use as a self-lubricating material alone

Method used

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  • Self-lubricating composite material as well as preparation method and application thereof
  • Self-lubricating composite material as well as preparation method and application thereof
  • Self-lubricating composite material as well as preparation method and application thereof

Examples

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preparation example Construction

[0024] In the present invention, the preparation method of the two-dimensional layered nanomaterial preferably includes the following steps:

[0025] The ternary layered compound MAX ceramic powder is placed in a hydrofluoric acid solution and etched to obtain an acid solution containing MXene;

[0026] The MXene-containing acid solution is centrifuged to obtain a two-dimensional layered nanomaterial.

[0027] In the present invention, the ternary layered compound MAX ceramic powder is preferably placed in a hydrofluoric acid solution for etching to obtain an acid solution containing MXene. In the present invention, the two-dimensional layered compound MAX ceramic powder is preferably Ti 3 AlC 2 powder; the particle size of the ternary layered compound MAX ceramic powder is preferably 50-100 μm, more preferably 74 μm.

[0028] In the present invention, the mass concentration of the hydrofluoric acid solution is preferably 35-55%, more preferably 40%.

[0029] In the presen...

Embodiment 1

[0046] Slowly add 1.0 g of Ti with a particle size of 74 μm to 11.25 mL of hydrofluoric acid solution with a mass concentration of 40%. 3 AlC 2 Powder, Ti 3 AlC 2 The speed of powder addition was controlled within 5 minutes, and the temperature was slowly raised to 35°C, and the reaction was continued for 24 hours with stirring to obtain an acid solution containing MXene;

[0047] Place the MXene-containing acid solution in a centrifuge tube, perform centrifugal cleaning at a speed of 3500r / min for 10 min, discard the supernatant, continue to add deionized water to the centrifuge tube, centrifuge, and repeat the above process until the above The pH value of the clear liquid is neutral; the sediment after centrifugation and washing is freeze-dried to obtain a two-dimensional layered nanomaterial; the size of the two-dimensional layered nanomaterial is 3-5 μm, and the sheet thickness is 20 nm.

[0048] The scanning electron microscope picture (SEM figure) of gained two-dimens...

Embodiment 2

[0055] The preparation method is basically the same as in Example 1, except that the mass ratio of the two-dimensional layered nanomaterial to the liquid bisphenol A epoxy resin is 1:99.

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Abstract

The invention relates to the technical field of composite materials, in particular to a self-lubricating composite material and a preparation method and application thereof. The self-lubricating composite material is prepared from the following raw materials: a two-dimensional layered nano material, epoxy resin and a curing agent, wherein each sheet layer of the two-dimensional layered nano material consists of a plurality of layers of MXene units; the mass ratio of the two-dimensional layered nano material to the epoxy resin is (0.1-40):(60-99.9); and the mass of the curing agent is 10-15% ofthe mass of the epoxy resin. The two-dimensional layered nano material with a graphene-like structure is added into the epoxy resin matrix, so that the self-lubricating composite material with excellent tribological properties under boundary and mixed lubrication conditions is obtained.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a self-lubricating composite material and its preparation method and application. Background technique [0002] With the rapid development of modern industry, the operating conditions of mechanical transmission equipment are becoming increasingly harsh, and mixed lubrication and even boundary lubrication frequently occur in the actual operation of mechanical moving parts. However, when the friction pair is in the boundary and mixed lubrication zone, the solid surface of the friction pair comes into direct contact first, and the plastic deformation of the solid surface causes the oil film to partially rupture and then sticks, resulting in severe wear and even seizure of the friction pair materials. This makes the lubrication of mechanical parts ineffective. Therefore, improving the wear resistance of friction pair materials under boundary and mixed lubrication conditi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K7/00C08K3/14C08G59/50
CPCC08G59/5006C08K3/14C08K7/00C08K2201/011C08L63/00
Inventor 郭丽和王廷梅王齐华张嘎
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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