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A kind of preparation method of nanoparticle reinforced resin lead core

A technology of nanoparticles and reinforced resin, applied in pencil leads, household appliances, applications, etc., can solve the problems of high cost of nanoparticles, easy to fall off, difficult to effectively enhance the mechanical properties of resin lead cores, etc. Comprehensive performance, high value-added effect

Active Publication Date: 2020-10-30
蓬莱凯威文体制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems that the cost of nanoparticles is high, they are easy to fall off on the graphite surface, and the small particle size is difficult to effectively enhance the mechanical properties of resin lead cores, the present invention provides a method for preparing nanoparticle-reinforced resin lead cores. Grow nanoparticles, prepare graphite loaded with nanoparticles (particle size: 21-500nm), and produce high-performance resin lead core reinforced by nanoparticles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The preparation method of spherical nanometer ZnO supported graphite and high-performance resin lead core thereof comprises the steps of:

[0036] 1) First, add 10 parts of graphite and 3 parts of sodium dodecylbenzenesulfonate into 10 parts of water and ultrasonically stir for 1 hour, then continue to stir and react at 60°C for 3 hours, then use suction filtration, wash with water and dry. Sodium dodecylbenzenesulfonate intercalated and coated graphite can be prepared.

[0037] 2) Next, disperse 10 parts of the above surfactant-modified graphite and 2.2 parts of zinc sulfate in 100 parts of water and stir evenly, add 2 parts of sodium hydroxide and react at 80°C for 8 hours, then use suction filtration , washed with water and dried to obtain graphite loaded with spherical ZnO nanoparticles (with a particle diameter of 30-50 nm), and the loaded amount of ZnO is about 7%.

[0038] 3) Finally, prepare the resin lead core reinforced by nanoparticles according to the follo...

Embodiment 2

[0041] Rod Nano Fe 2 o 3 The preparation method of the graphite of load and high-performance resin lead core thereof, it comprises the steps:

[0042]1) First, weigh 10 parts of graphite and 10 parts of fatty alcohol polyoxyethylene ether sodium sulfate (AES) into 100 parts of water and ultrasonically stir for 1 hour, then continue to stir and react at 60°C for 3 hours, then use suction filtration and water washing And drying, AES intercalated and coated graphite can be prepared.

[0043] 2) Next, disperse 10 parts of the above-mentioned surfactant-modified graphite and 3.2 parts of ferric chloride hexahydrate in 80 parts of water and stir evenly, react at 95° C. for 3 hours, then use suction filtration, wash with water and dry. Rod-shaped Fe can be obtained 2 o 3 Graphite supported by nanoparticles (diameter 30-55nm, length 200-500nm), Fe 2 o 3 The loading is about 8%.

[0044] 3) Finally, the resin lead core reinforced by nanoparticles is prepared according to the fol...

Embodiment 3

[0047] Spherical nano-SiO 2 The preparation method of the graphite of load and high-performance resin lead core thereof, it comprises the steps:

[0048] 1) First, weigh 10 parts of graphite and 3 parts of trialkyl (benzyl) methyl ammonium chloride and add them to 50 parts of water and ultrasonically stir for 1 hour, then continue to stir and react at 60°C for 3 hours, then use suction filtration, After washing with water and drying, the trialkyl (benzyl) methyl ammonium chloride intercalated and coated graphite can be prepared.

[0049] 2) Next, disperse 10 parts of the above-mentioned surfactant-modified graphite and 2.1 parts of sodium silicate nonahydrate into 70 parts of mixed solutions containing water, n-pentanol and cyclohexane (mass ratio 0.5:2:5) After the ultrasonic dispersion is uniform, add concentrated sulfuric acid dropwise to adjust the pH value of the system to 1.5 and react for 3 hours. After the reaction product is washed with absolute ethanol, it is placed...

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Abstract

The invention discloses a preparation method of a nanoparticle reinforced resin lead core. The method includes: dispersing graphite and a surfactant in water, conducting ultrasonic stirring, carrying out reaction for a period of time to obtain a surfactant intercalated and coated graphite; dispersing the surfactant modified graphite and a salt for preparation of corresponding nanoparticles in a solvent, conducting charge induction to enable in-situ growth of nanoparticles on the graphite surface, thus obtaining nanoparticle loaded graphite; and using nanoparticle modified graphite to replace pure graphite, performing compounding according to an existing core-making technology and preparing the nanoparticle reinforced high performance resin lead core. The manufactured nanoparticle modified resin fine lead core has excellent performance, and the quality of the nanoparticle reinforced resin lead core is proved to up to the international level A standard. The method can significantly improve the flexural strength, impact strength and writing comfort of the resin lead core without changing the existing processing technology, has the characteristics of simple operation, low cost, high product quality, low equipment investment and the like, and is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the field of preparation of resin lead cores, in particular to a preparation method of nanoparticle-reinforced resin lead cores. Background technique [0002] At present, the demand for lead cores in the domestic and foreign markets is very large. There are more than a dozen lead core manufacturers in China, with an annual output of less than 500 tons, and only half of them meet the international Class A standard. And along with the continuous improvement of the living standard of science and technology, people are more and more higher to the performance requirement of lead core. Among them, compared with the traditional graphite-clay composite lead core, the resin lead core has the characteristics of thin core, easy processing, smooth writing, and clear writing. It is currently the most popular lead core product. For some high-end occasions, users require the lead core to have both clear writing marks and high flexural streng...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D13/00
CPCC09D13/00
Inventor 马超峰张伟祥
Owner 蓬莱凯威文体制品有限公司
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