In-situ micropore-ultraspeed centrifugal adsorption nano combination technique

A technology of ultracentrifugation and nano-composite, which is applied in the field of organic/inorganic nano-composite materials, and can solve the problems of surface non-oxidation, non-agglomeration, difficulty in uniform dispersion of inorganic nanoparticles, etc.

Inactive Publication Date: 2006-03-15
WUHAN UNIV OF TECH
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  • Abstract
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Problems solved by technology

[0010] The present invention mainly solves the problem that the inorganic nanoparticles are difficult to disperse uniformly in the polymer matrix. By adopting the composite technology of the present invention, the inorganic nanoparticles are not agglomerated, the surface is not oxidized and is not polluted during the process of storage, transportation and compounding.

Method used

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  • In-situ micropore-ultraspeed centrifugal adsorption nano combination technique

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Embodiment 1

[0018] Embodiment 1: first the polyvinyl chloride pellets are foamed to make the polyvinyl chloride pellets form porous particles with interconnected pores, and then the porous polyvinyl chloride pellets are added to the Ca(OH) 2 In the aqueous solution, CO was introduced slowly during high-speed stirring 2 , so that the formation of CaCO 3 Nanoparticles are adsorbed to the large number of micropores and surfaces of porous polyvinyl chloride under the action of centrifugal force to prepare CaCO 3 / PVC nano-composite masterbatch, and then mix and compound the masterbatch with PVC to prepare PVC / CaCO 3 Nanocomposite materials, tested according to the national standard GB / T 1043-93, the tensile strength of PVC products exceeds 80MPa, and the impact strength exceeds 100kJ / m 2 .

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Abstract

Firstly, adopting conventional foaming process to make polymer particles be foamed to obtain porous polymer granules material with through hole, then dispersing said porous polymer granules into water phase, adding raw material capable of forming inorganic nano particles in the water phase, stirring at high speed and making the inorganic nano particles be adsorbed in the lots of micropores of the polymer and on the surface of them to obtain the organic / inorganic nano composite mother granules, after the composite mother granules and conventional polymer are uniformly mixed, using conventional forming processing technology to prepare the invented nano composide material.

Description

1. Technical field: [0001] The invention belongs to the category of organic / inorganic nano composite materials, and provides an in-situ micropore-ultracentrifugal adsorption nano composite technology to solve the problem of uniform dispersion of inorganic nano particles in polymers. 2. Background technology: [0002] The material obtained by compounding inorganic materials dispersed in polymers at the nanoscale is called organic / inorganic nanocomposites, and its performance is significantly better than that of a single material. Organic / inorganic nanomaterial composite technology realizes the complementary excellent properties of polymer and inorganic materials on the same material, so as to prepare high-performance and functional composite materials. However, due to the large specific surface area of ​​nanoparticles and many unpaired atoms on the surface, they are easy to aggregate during synthesis, storage, transportation and compounding, and the surface is easy to oxidize...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/20C08J3/12B29B9/08B29B15/00
Inventor 熊传溪董丽杰汪庆刚
Owner WUHAN UNIV OF TECH
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