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Sea shell micropowder filler and its use

A technology of shell micropowder and shell, which is applied in the field of fillers and can solve problems such as poor compatibility and unsatisfactory surface modification efficiency

Inactive Publication Date: 2004-02-18
孙建宁 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the purposes of the present invention is to provide a shell micropowder filler to overcome the poor compatibility of existing fillers with polymer materials in heterogeneous materials, and the chemical modification has selectivity to specific fillers, and the efficiency of surface modification is low. Unsatisfactory and other defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Embodiment 1 shell fine powder filler

[0073]After the shells are washed with seawater, they are washed with alkali at a weight concentration of 10% sodium hydroxide aqueous solution to remove the organic residues on the surface. The amount of solution added ensures that 100Kg shells contain 5Kg sodium hydroxide aqueous solution, and then they are coarsely ground into millimeters by rollers pieces and let dry naturally. Using jet mill and KSF type new ultra-fine classifier, the shell particle fillers with an average characteristic scale of 0.3 micron are obtained, some of which are spherical; some are sheets with a thickness of 0.3 micron; some are fibrous with a diameter of 0.3 microns, the aspect ratio is 5-30.

Embodiment 2

[0074] Embodiment 2 superfine shell micropowder filler

[0075] After the shells are washed with seawater, they are washed with alkali at a weight concentration of 10% sodium hydroxide aqueous solution to remove the organic residues on the surface. The amount of solution added ensures that 100Kg shells contain 5Kg sodium hydroxide aqueous solution, and then they are coarsely ground into millimeters by rollers pieces and let dry naturally. Using a jet mill and a KSF type new ultra-fine classifier, irradiating with ultraviolet rays during the pulverization process accelerates the degradation of organic polymers, reducing their toughness, and obtaining finer shell powder fillers with an average characteristic size of 0.1 microns. Some are spherical; some are flakes, with a thickness of 0.1 micron; points to obtain dry heat-resistant shell micropowder filler. The shell micropowder filler surface contains amino groups, hydroxyl groups and glucose.

Embodiment 3

[0076] Example 3 Red superfine shell powder filler

[0077] Selected crabs are used as raw materials, and the process conditions in Example 2 are adopted, and treated at 200°C to obtain red superfine shell powder filler.

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PUM

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Abstract

A shell microparticle filler used for high-molecular materials to improve their thermal and mechanical performance is prepared from shell through pulverizing, classifying, high-temp stabilizing and decoloring, and chemical surface modifying. It features its surficial hydrophilic, lipophilic and active properties.

Description

technical field [0001] The invention belongs to the field of fillers, in particular to shell micropowder filler prepared by pulverizing and classifying shell powder, or further chemical modification, and the use of the shell micropowder filler in polymer materials. Background technique [0002] In multi-phase materials, some fillers are often added to improve the mechanical strength and heat resistance. If the fillers are functional, it will make the multi-phase materials functional such as antistatic, absorb electromagnetic waves, etc., while reducing the performance of multi-phase materials. production cost. Fillers include: perlite, calcium carbonate, fly ash, wollastonite, kaolin, mica, talc, silica, titanium dioxide, nanosheet soil, carbon black, alumina, red mud, calcium sulfate, glass fiber, carbon fiber etc. However, the above-mentioned fillers have poor compatibility with polymer materials, which reduces the performance of the materials. In or...

Claims

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Application Information

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IPC IPC(8): C08J3/00C08L5/08
Inventor 孙建宁山丹
Owner 孙建宁
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