19 results about "Microfibril" patented technology

The invention belongs to the technical field of spectral analysis, and discloses a plant cell wall microfibril orientation polarization Raman spectrum measurement method, which comprises: 1, carrying out polarization Raman spectrum data acquisition on a sample to be measured; step 2, acquiring required data based on a data acquisition result of the polarization Raman spectrum; 3, performing nonlinear parameter fitting on the required data, obtaining an optimal parameter combination and a corresponding coefficient through a minimum error function, and performing forced symmetry post-processing on the optimal Raman tensor matrix; step 4, calculating a microfilament angle of a corresponding angle according to the symmetrical tensor parameter; in the fourth step, based on the symmetrical tensor matrix, the angle needed for rotating the tensor matrix to the main axis direction is calculated; and carrying out normalization processing on the calculated angle value. The technical problems that in the prior art, due to the fact that a nonlinear fitting algorithm is complex and prone to being affected by noise and experimental errors, the fitting convergence effect is poor, and the stability and reliability of a detection result are insufficient are solved.

This invention belongs to the field of antitumor drug delivery technology, and discloses a dual-drug sequential delivery system, a composite hydrogel, its preparation method, and its applications. This invention achieves sequential release by encapsulating a cobalt (Co)-polyphenol coordination nanozyme (CoNZ) in a hydrogel and integrating it with microfibrils loaded with chloroquine (CQ). This invention provides a promising new approach to improving the treatment of CRPC by initially inducing ROS-mediated oxidative damage, subsequently inhibiting autophagy and blocking the TLR9 / NF-κB signaling pathway, synergistically disrupting the survival mechanisms of tumor cells.

The application discloses lignocellulose microfibril and a preparation method thereof, and comprises the following steps: 1) performing enzyme treatment on agricultural straw; 2) performing alkali activation treatment on the agricultural straw treated in the step 1); and 3) performing mechanical grinding on the agricultural straw treated in the step 2) to obtain lignocellulose microfibril. The application directly performs microfibril treatment on the whole component of the agricultural straw lignocellulose by combining the biological treatment, the alkali activation treatment and the mechanical grinding with different gradient concentrations, has high production efficiency, avoids the cost increase and the environmental load caused by the component separation of the agricultural waste in the traditional method, and the prepared lignocellulose microfibril has both the mechanical strength of cellulose and the thermosetting property of lignin, and can be applied in the fields of thermosetting resin, plastic blown film and hot-press forming and the like.

The present invention relates to a modified pulp with a moisture content of less than 15% and a certain content of microfibrils and pre-fibrillated fibres. The modified pulp can, after suspension, be used either directly or be subjected to additional refining. The present invention also relates to a method of producing a fibrous product using the modified pulp.

A porous polytetrafluoroethylene (PTFE) membrane including a nonwoven web having a microstructure of substantially only microfibrils fused at crossover points, said membrane having a percent balance of orthogonal dimensions that is within 10%.

The application discloses a preparation method of a UV photocuring, solvent-free type nickel inner electrode paste, and specifically comprises the following steps: step 1, preparing acrylic modified cellulose microfibril; step 2, synthesizing a UV photocuring resin; step 3, synthesizing a nickel complex; step 4, preparing a nickel inner electrode paste according to the products obtained in steps 1-3; and step 5, preparing a ceramic paste according to the product obtained in step 4. The application further discloses the UV photocuring, solvent-free type nickel inner electrode paste and application thereof in multilayer ceramic capacitors. The electrode paste prepared by the application does not need to remove solvent by heating, avoids the problem of uneven solvent drying, and improves the yield and performance of devices.

The invention discloses a rice stem multi-scale mechanical simulation modeling method, device and equipment and a medium. The method comprises the following steps: selecting a second base node stem of a mature period base of a rice variety to be tested as a sample; microcosmic characteristic parameters of the sample are extracted; based on the extracted microscopic characteristic parameters, material parameter calculation is carried out based on an HP-TS equation, hemicellulose-lignin matrix equivalent calculation, cellulose-matrix composite equivalent calculation, flexibility matrix and initial stiffness matrix construction and microfibril angle correction are completed in sequence, and an engineering constant of each layer of cell wall is obtained; performing image processing on the rice stalk paraffin section; constructing a rice stem tissue three-dimensional shell finite element model based on the cellular morphology contour and topological information obtained through image processing and the cell wall engineering constants obtained through calculation, and executing finite element simulation; actual measurement data are obtained through a rice stem tensile test and compared with a finite element simulation result for verification, and rice stem multi-scale mechanical simulation modeling is completed.

The present invention provides a preparation method and application of a magnetic biochar adsorption material, and relates to the technical field of biochar adsorption materials. The above-mentioned adsorption material is prepared by using three kinds of biomass, namely municipal sludge, straw and antimony mine waste residue, as biochar sources, and further loading magnetic nano-γ-Fe2O3 particles. In the above process, by controlling the quality of municipal sludge, straw and antimony mine waste residue, the composition and performance of the biochar substrate in the adsorption material can be regulated, and the rich active sites in the sludge and straw can be fully utilized to achieve the loading of magnetic nano-γ-Fe2O3 particles. The microfibril structure in the straw and the high-activity mesoporous carrier in the antimony mine waste residue can not only improve the loading rate of the magnetic nano-γ-Fe2O3 particles to a certain extent, but also facilitate the diffusion and capture of heavy metal ions during the application process, thereby improving the adsorption rate of the material to heavy metal ions as a whole.

The application discloses a kind of preparation method and product of high-strength high-toughness degradable polylactic acid 3D printing consumables, comprising, base, fiber-forming phase, compatibility agent, talcum powder, antioxidant are dried, after being mixed uniformly, by extruder melt blending extrusion, preparation is made into blend and is dried;The extrusion of the dried blend is carried out in multistage stretching 3D printing consumables extrusion device, by controlling extrusion process, to prepare high-strength high-toughness degradable polylactic acid 3D printing consumables.The application in the preparation process of polylactic acid 3D printing consumables, using layer multiplier is strongly sheared and stretched to polymer melt, to realize dispersed phase material in-situ fiber-forming in PLA matrix, and the dispersed phase microfibril formed further induces PLA to form the crystal form of special "shish-kebab" structure, the formation of this crystal form can greatly improve the toughness of polylactic acid 3D printing consumables, more importantly, it can also significantly improve the tensile strength and modulus of consumables.

The invention relates to a wet chemical metal ion purification medium, the purification medium is in the form of a microporous membrane, a chelating group is loaded on the microporous membrane to form a chelating membrane, and the IPA bubble point of the chelating membrane is 60-320 kPa; the chelating film comprises a porous body with a liquid inlet face and a liquid outlet face as boundaries and a liquid inlet skin layer located on the liquid inlet side of the porous body, the side, away from the liquid outlet face, of the liquid inlet skin layer is the liquid inlet face of the chelating film, and a non-directional zigzag channel is formed in the porous body so that the chelating film can be communicated from the liquid inlet face to the liquid outlet face. The liquid inlet surface is provided with liquid inlet holes with the average roundness coefficient R of 0.1-0.6, microfiber structures are arranged in at least part of the liquid inlet holes, at least one end of each microfiber structure is connected to the hole wall of the corresponding liquid inlet hole, and the area ratio of the liquid inlet holes in the liquid inlet surface is 10%-40%. Compared with the prior art, the chelating membrane provided by the invention has the advantages of higher flow velocity, higher filtering efficiency and higher metal ion purification effect.

The invention relates to a method for producing a shred filler tobacco material with improved filling force, comprising the following steps: providing a binder to loose tobacco leaves (1) wherein the binder at least partially coats individual loose tobacco leaves (1), thereby forming an at least partial coating layer on the tobacco leaves (1), the method further comprises a charging step wherein the tobacco leaves are provided with at least one charging and wherein the tobacco leaves are provided with at least one additive (12), the method further comprises a flavoring step wherein the tobacco leaves are provided with at least one additive (12), wherein at least one flavoring component is provided to the tobacco leaves and wherein the binder is provided during the charging step, the mixing step or the flavoring step. The invention also relates to a shred filler tobacco material comprising loose tobacco leaves (1) and a binder, where the binder at least partially coats individual loose tobacco leaves (1), thereby forming an at least partial coating layer on the loose tobacco leaves (1), and where the binder comprises at least one of: tragacanth gum and water, the present invention relates to a composition comprising a cellulose nanocrystal, microfibrillated cellulose and water, cellulose nanocrystals and water, 2 to 8% dry matter dextrin and water, and 0.1 to 9% dry matter carboxymethyl cellulose and water. The invention also relates to the use of a binder to improve the filling force of a shred filler tobacco material comprising loose tobacco leaves (1) wherein the binder at least partially coats individual loose tobacco leaves (1), thereby forming an at least partial coating layer, and wherein the binder comprises at least one of: tragacanth gum and water, the present invention relates to a composition comprising a cellulose nanocrystal, microfibrillated cellulose and water, cellulose nanocrystals and water, 2 to 8% dry matter dextrin and water, and 0.1 to 9% dry matter carboxymethyl cellulose and water.

The invention provides a leather-based samarium boride composite material as well as a preparation method and application thereof, and belongs to the technical field of shielding materials. The samarium boride is loaded on the natural leather to prepare the novel natural leather composite shielding material, and Sm and B in the samarium boride have large neutron absorption cross sections, so that thermal neutrons can be well absorbed, and the shielding effect is good. Meanwhile, samarium boride is stabilized and dispersed in the natural leather by dipping by utilizing a multi-level supramolecular assembly structure formed by an amino acid-polypeptide chain-triple helix strand-microfibril-fibril-collagenous fiber-fiber bundle-fiber network three-dimensional framework of the natural leather, so that effective combination of samarium boride and a leather substrate is realized; the dispersity of the samarium boride filler is improved, and the high-performance neutron protection material based on the leather matrix is obtained.

The present disclosure provides microporous hollow fiber webs, including connected hollow fibers. At least some of the hollow fibers have an open celled porous structure including microfibrils that connect lamellae microstructures. Methods of making microporous hollow fiber webs are also provided. Such methods include obtaining a hollow fiber web having connected hollow fibers, and stretching the hollow fiber web in a machine direction to fracture at least a portion of the hollow fibers to generate an open celled porous structure.

The purpose of the present invention is to provide an agrochemical composition that floats on water and that exhibits excellent diffusibility and excellent particle disintegration.　The agrochemical composition that floats on water comprises an agrochemical active ingredient, a fibrous material, and an acetylene glycol-based surfactant. The fibrous material contains an aggregate of microfibrils formed from cellulose, and the average fiber length of the microfibrils is 10 to 1,000 μm.

A process for producing dried, vinyl carboxylate surface-modified microfibrillated cellulose having improved mechanical properties and a microfibril structure and a process for producing a vinyl carboxylate, surface-modified microfibrillated cellulose-thermoplastic polyester or thermoplastic polyolefin composite material having improved mechanical strength properties utilizing dried, vinyl carboxylate surface-modified microfibrillated cellulose.

The present invention relates to a modified pulp with a moisture content of less than 15% and a certain content of microfibrils and pre-fibrillated fibres. The modified pulp can, after suspension, be used either directly or be subjected to additional refining. The present invention also relates to a method of producing a fibrous product using the modified pulp.

The present invention addresses the problem of providing: a microfibril cellulose which has excellent dispersibility in a rubber composition; and a rubber composition which comprises the microfibril cellulose and a rubber component. The present invention also addresses the problem of providing a crosslinked rubber composition which is obtained by crosslinking the rubber composition.　The microfibril cellulose of the present invention has an average fiber width of 1 μm to 100 μm inclusive and a polymerization degree of 50 to 500 inclusive.

Method for the manufacturing of an elongated, e.g. microfibril structure for the fabrication of cultivated meat, wherein(a) a paste is extruded through an extrusion plate (24) and an adjacent attachment plate (22) with aligned nozzle openings (42, 44) into a space (58) downstream of the second nozzle plate (22),(b) paste located in said space (58) or in the attachment plate (22) is hardened,(c) said paste is continued to be extruded through said extrusion plate (24) while the distance between the attachment plate (22) and the extrusion plate (22) is increased under formation of said elongated, e.g. microfibril structure between said plates (22,24).

A shaving device includes a handle attached to a razor head carrying at least one razor blade. The handle is a molded fiber part having an elongated hollow body open on one side. The shaving device may also include reinforcing elements arranged in the elongated hollow body that forms the handle, a plurality of reinforcing ribs spaced apart from one another and traversing the elongated hollow body of the handle in a transverse direction with respect to the handle, reinforcing ribs that completely fill a U-shaped cross-section of the elongated hollow body of the handle, reinforcing ribs having a height that is significantly less than a height of the handle, and / or at least one longitudinal rib in the elongated hollow body of the handle. The molded fiber part may include a mixture of long fibers, short fibers and microfibrils. The fiber blend may have a mixture of hemp fibers.