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Preparation method of monodisperse antistatic polyethylene micropowder

A polyethylene micropowder and polyethylene powder technology, which is applied in the field of preparation of monodisperse antistatic polyethylene micropowder, can solve the problems of large particle size, wide particle size distribution, high static electricity, etc., and achieve simple composition and narrow particle size distribution Effect

Active Publication Date: 2020-09-11
HUANGSHAN BANNER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The physical method of preparing polyethylene micropowder does not require solvents and has environmental protection advantages, but there are also many disadvantages
The disadvantages of the mechanical pulverization method are: it is easy to mix impurities and violent oxidation, the shape is irregular, the particle size is large and the distribution is wide, and it is difficult to obtain powders below the micron level
The disadvantages of the evaporation-condensation method are: the process is more complicated, the conditions are high, and it is not suitable for large-scale production
The disadvantages of the melting method are: the size of the particle size requires high precision of the equipment, the particle size distribution is wide, and it is easy to form fibrous products
The chemical method is the main method for preparing polyolefin resin micropowder in the laboratory and industry at present, and has the advantages of controllable reaction, uniform particle size distribution and regular shape of the product. Disadvantages such as high static electricity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0020] Example 1-4: A preparation method of monodisperse antistatic polyethylene micropowder

[0021] A preparation method of monodisperse antistatic polyethylene micropowder comprises the following technical steps.

[0022] (1) Low temperature nitrogen filled ball mill

[0023] The polyethylene raw material is one or more of low-density polyethylene (LDPE), high-density polyethylene (HDPE), and linear low-density polyethylene (LLDPE).

[0024] At an ambient temperature of 0-10°C, put the polyethylene raw material into a closed stainless steel ball mill, pump out the air in the ball mill, fill it with nitrogen, and then turn on the ball mill to fully grind the polyethylene raw material to 100-150 order to obtain polyethylene powder for subsequent use.

[0025] (2) Preparation of compound solvent

[0026] Mix 50-70 parts of the main solvent, 15-25 parts of the solubilizer, 0.5-5.0 parts of the dispersant, and 0.5-5.0 parts of the antistatic agent in proportion, and stir well...

Embodiment 1

[0042] A method for preparing monodisperse antistatic polyethylene micropowder, which is prepared from component raw materials of the following qualities:

[0043] 20 parts of low-density polyethylene particles;

[0044] Main solvent: 45 parts of 4-chlorotoluene; solubilizer: 25 parts of propylene glycol methyl ether; dispersant: 1.5 parts of hydroxypropyl methylcellulose; antistatic agent: 0.5 part of polyaniline.

[0045] The freeze-drying temperature is -40°C.

Embodiment 2

[0047] A method for preparing monodisperse antistatic polyethylene micropowder, which is prepared from component raw materials of the following qualities:

[0048] 25 parts of low-density polyethylene particles;

[0049] Main solvent: 50 parts of 2,4-dichlorotoluene; solubilizer: 20 parts of propylene glycol ether; dispersant: 1.0 part of methyl cellulose; antistatic agent: 0.5 part of polypyrrole.

[0050] The freeze-drying temperature is -50°C.

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Abstract

The preparation method of the monodisperse antistatic polyethylene micro powder comprises the following technical steps. (2) preparing a composite solvent; (3) mixing and dissolving the components byresonance sound; (4) grinding the solution by a colloid mill; (5) carrying out ultrasonic wave and microwave synergistic treatment; and (6) freeze-drying the product. In the invention, the polyethylene micro-powder has the characteristics of monodispersity and narrow particle size distribution.

Description

technical field [0001] The invention belongs to the technical field of polymer materials and relates to a preparation method of monodisperse antistatic polyethylene micropowder. Background technique [0002] Polyethylene is a thermoplastic resin obtained by polymerization of ethylene. Polyethylene is insoluble in common solvents at room temperature, has low water absorption and excellent electrical insulation; it is a thermoplastic with light weight, non-toxicity and good comprehensive properties, and has a wide range of uses. [0003] The micropowder product obtained by superfine processing of polyethylene has important use value. Polyethylene micropowder has many functions, it can be used as a non-polar low-shrinkage additive, and it is a particularly effective basic additive; it can be used as a hot-melt adhesive for the positive electrode ring of an alkaline battery; it can be used for the physical properties of paints, pigments and inks. Performance modification can r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L79/02C08L79/04C08L65/00C08J3/12C08J3/28C08J3/205
CPCC08J3/12C08J3/28C08J3/2053C08J2323/06C08J2479/02C08J2479/04C08J2465/00
Inventor 陈祥迎郑德宝
Owner HUANGSHAN BANNER TECH