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1922 results about "Polymer composites" patented technology

Method for preparing nano cellulose microfibril reinforced polymer composite material

The invention discloses a method for in situ generating a nano cellulose microfibril reinforced polymer composite material, comprising the following steps: using ionic liquid as a primary solvent, dissolving cellulose, or mixing cellulose with other polymers via solution mixing, and controlling the solubility of the cellulosic material in the solvent to maintain naturally occurring nano cellulose microfibril in the cellulosic material, so as to in situ obtain the nano cellulose microfibril reinforced polymer composite material. The nano microfibril can be observed under a transmission microscope obviously, which is different from the completely dissolved cellulose solution. In the preparing process, the dissolving temperature is controlled within 30-150 DEG C, and stirring and vacuum deaeration are used as auxiliary. By controlling the dissolving time, solution concentration and ratio of mixing, a polymer solution containing cellulose microfibril with dimension of 5-300 nanometers can be obtained. The polymer solution can be used for preparing composite material fiber, hollow fibrous membrane, diaphragm, film, gel, porous material and other known applications of enhanced material.
Owner:INST OF CHEM CHINESE ACAD OF SCI

Aligned carbon nanotube-polymer materials, systems and methods

The invention is directed to carbon nanostructure composite systems which may be useful for various applications, including as dry adhesives, electronics and display technologies, or in a wide variety of other areas where organized nanostructures may be formed and integrated into a flexible substrate. The present invention provides systems and methods wherein organized nanotube structures or other nanostructures are embedded within polymers or other flexible materials to provide a flexible skin-like material, with the properties and characteristics of the nanotubes or other nanostructures exploited for use in various applications. In one aspect, the invention is directed to a carbon nanotube/polymer composite material having a plurality of carbon nanotubes formed into a predetermined architecture, with each of the plurality of nanotubes having a desired width and length. The architecture of the plurality of nanotubes defines at least one orientation for a plurality of nanotubes, and also defines the approximate spacing between nanotubes and/or groups of nanotubes. The carbon nanotube architecture is at least partially embedded with a polymer matrix in a manner that the architecture is stabilized in the predetermined architecture. The polymer matrix may also be formed to have a desired predetermined thickness.
Owner:THE UNIVERSITY OF AKRON +1

Dopamine compound modified or coated nano particle modified polymer composite material and preparation method thereof

The invention belongs to the field of nano particle or polymer composite material preparation and particularly relates to a dopamine compound modified or coated nano particle modified polymer composite material and a preparation method thereof. The composite material is composed of nano particles with surfaces modified or coated by dopamine compound and a high molecular polymer matrix. The nano particles with the surfaces modified or coated by the dopamine compound are uniformly scattered in the high molecular polymer matrix. According to the dopamine compound modified or coated nano particle modified polymer composite material, the dopamine compound modified or coated nano particles are utilized, the dopamine compound can aggregate spontaneously on the surface of a nano particle material to form a thin film to enable the surfaces of the nano particles to be connected with a function group such as hydroxyl and amidogen with strong activity, the compatibility of the nano particles in the high molecular polymer can be increased, and the dopamine compound is favorable for causing the nano particles and the high molecular polymer matrix to further generate secondary reaction. The dispersibility of the nano particles is good, and the stability is good in the dopamine compound modified or coated nano particle modified polymer composite material, and the comprehensive performance of the composite material can be improved remarkably.
Owner:WUHAN UNIV OF TECH

Aligned Carbon Nanotube-Polymer Materials, Systems and Methods

The invention is directed to carbon nanostructure composite systems which may be useful for various applications, including as dry adhesives, electronics and display technologies, or in a wide variety of other areas where organized nanostructures may be formed and integrated into a flexible substrate. The present invention provides systems and methods wherein organized nanotube structures or other nanostructures are embedded within polymers or other flexible materials to provide a flexible skin-like material, with the properties and characteristics of the nanotubes or other nanostructures exploited for use in various applications. In one aspect, the invention is directed to a carbon nanotube/polymer composite material having a plurality of carbon nanotubes formed into a predetermined architecture, with each of the plurality of nanotubes having a desired width and length. The architecture of the plurality of nanotubes defines at least one orientation for a plurality of nanotubes, and also defines the approximate spacing between nanotubes and/or groups of nanotubes. The carbon nanotube architecture is at least partially embedded with a polymer matrix in a manner that the architecture is stabilized in the predetermined architecture. The polymer matrix may also be formed to have a desired predetermined thickness.
Owner:THE UNIVERSITY OF AKRON +1
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