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ZnS quantum dot/MXene/polymer-based super-wear-resistant self-lubricating composite material as well as preparation method and application thereof

A composite material and quantum dot technology, applied in the field of advanced composite material science, can solve the problems of easy stacking of lamellae and poor compatibility of polymer matrix, and achieve the effects of improving compatibility, good dispersibility and simple process operation.

Pending Publication Date: 2020-08-14
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has the problems of easy stacking of sheets and poor compatibility with polymer matrix
However, there are no attempts and related research reports on the composite friction properties of polymer systems.

Method used

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  • ZnS quantum dot/MXene/polymer-based super-wear-resistant self-lubricating composite material as well as preparation method and application thereof
  • ZnS quantum dot/MXene/polymer-based super-wear-resistant self-lubricating composite material as well as preparation method and application thereof

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preparation example Construction

[0029] The invention discloses a preparation method of a ZnS quantum dot / MXene / polymer-based super wear-resistant self-lubricating composite material, which specifically includes the following steps:

[0030] 1) First, take 0.1-0.3 parts of MXene and disperse into 60-100 parts of deionized water to form a uniform dispersion solution, then add 1.5 parts of zinc source, ultrasonic treatment for 1-3 hours, and take a certain amount of ammonia water to adjust Its pH value is weakly alkaline (pH value is 8.5-9.5), and a weakly alkaline dispersion liquid is obtained. Simultaneously, dissolve 3 parts of sulfur source in 10-20 parts of deionized water, stir magnetically for 1 hour, add to the above-mentioned weak alkaline dispersion liquid and fully mix and stir. Next, transfer the mixed solution to a reaction kettle for 6-16 hours at 120-190°C. Finally, after the reaction was completed and the product was naturally cooled to room temperature, it was suction-filtered, washed repeated...

Embodiment 1

[0041] 1) First, take 0.1 part of Ti 3 C 2 MXene was dispersed into 60 parts of deionized water and ultrasonically formed a uniform dispersion solution, and then 1.5 parts of zinc acetate (Zn(Ac) 2 2H 2 0), ultrasonic treatment 3h under the power of 150W, and get a certain amount of ammonia water to adjust its pH value to 9. At the same time, 3 parts of sodium sulfide (Na 2 S·9H 2 O) Dissolve in 10 parts of deionized water, stir magnetically for 1 h, add to the above dispersion liquid and fully mix and stir. Secondly, the mixed solution was transferred to a reaction kettle for 10 h at 120°C. Finally, after the reaction is over, after the product is naturally cooled to room temperature, it is suction-filtered, washed repeatedly with deionized water, and then freeze-dried to obtain ZnS quantum dots / Ti 3 C 2 MXene composite particles.

[0042] 2) Add 0.1 parts of ZnS quantum dots / Ti 3 C 2 MXene composite particles, 30 parts of diallyl bisphenol A, and 40 parts of diphen...

Embodiment 2

[0046] 1) First, take 0.3 parts of Ta 4 C 2 MXene was dispersed into 100 parts of deionized water and ultrasonically formed a uniformly dispersed solution, then 1.5 parts of zinc nitrate was added, ultrasonically treated at 300W for 2 hours, and a certain amount of ammonia water was taken to adjust its pH value to 9. At the same time, dissolve 3 parts of thiourea in 10 parts of deionized water, stir magnetically for 1 hour, add to the above dispersion liquid and mix thoroughly. Secondly, the mixed solution was transferred to a reaction kettle to react at 190° C. for 12 hours. Finally, after the solution was naturally cooled to room temperature, it was suction-filtered, washed repeatedly with deionized water, and then freeze-dried to obtain ZnS quantum dots / Ta 4 C 2 MXene composite particles.

[0047] 2) 8 parts of ZnS quantum dots / Ta 4 C 2 MXene composite particles, 60 parts of E-51 type epoxy resin, 48 parts of methyl tetrahydrophthalic anhydride curing agent, add 0.6 p...

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Abstract

The invention discloses a ZnS quantum dot / MXene / polymer-based super-wear-resistant self-lubricating composite material as well as a preparation method and application thereof, and belongs to the technical field of advanced composite material science. The method comprises the following steps: firstly, growing ZnS quantum dots on the surface of MXene in situ by utilizing a hydrothermal method to obtain ZnS quantum dot / MXene composite particles; and then introducing the ZnS quantum dot / MXene composite particles into a polymer matrix to prepare the ZnS quantum dot / MXene / polymer-based super-wear-resistant self-lubricating composite material. The preparation method provides a simple and efficient composite process method, realizes uniform and stable compounding of the ZnS quantum dots, the MXeneand the polymer, has the characteristics of simple process, strong universality and convenience in large-scale production, and can be well applied to the field of industrialization. The ZnS quantum dot / MXene / polymer-based super-wear-resistant self-lubricating composite material prepared by the preparation method has the advantages of low friction coefficient, good wear resistance and stable friction coefficient, and has important application and popularization in the technical field of advanced composite material science.

Description

technical field [0001] The invention belongs to the field of science and technology of advanced composite materials, and relates to a ZnS quantum dot / MXene / polymer-based super wear-resistant self-lubricating composite material and its preparation method and application. Background technique [0002] Due to its light weight, good performance, and easy processing, polymer-based composite materials are gradually replacing metal materials and becoming the composite materials with the most development potential. Today's rapidly developing manufacturing industry has higher and higher requirements for its performance. In the field of friction, the polymer matrix itself has the problems of high friction coefficient and poor wear resistance, which greatly limits the scope of application. Usually, various fillers or reinforcements are introduced to improve the tribological properties of polymer matrix composites. However, there are still problems such as poor dispersion of fillers or...

Claims

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Application Information

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IPC IPC(8): C08L79/08C08K3/30C08K3/14C08L63/00C08L25/06
CPCC08K3/30C08K3/14C08K2003/3036C08L79/085C08L63/00C08L79/08C08L25/06
Inventor 刘超李茜郝丽芬鲍艳林阳殷青
Owner SHAANXI UNIV OF SCI & TECH
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