43results about How to "Cross-linking" patented technology

The invention discloses an aminated starch-based nanocomposite and a preparation method thereof. The aminated starch-based nanocomposite comprises the following components in parts by weight: 100 parts of epoxidized polymer, 2-40 parts of aminated starch nanoparticles, 0-3 parts of auxiliary crosslinking agent and 3-25 parts of polymer processing aid, wherein the structural general formula of starch in the aminated starch nanoparticles is St-R0CH(R1)-R2. In the invention, through the combination of the aminated starch nanoparticles and the epoxidized polymer, the nano reinforcing effect of the starch nanoparticles on the polymer is remarkably embodied, and the polymer material is endowed with the green and environment-friendly features; and moreover, the aminated starch nanoparticles serve as a crosslinking agent in the epoxidized polymer. The aminated starch-based nanocomposite disclosed by the invention is easy to prepare and excellent in property and can be applied to various products such as rubber, plastics and adhesives.

The invention belongs to the field of lithium ion batteries, and in particular relates to a cross-linked gel polymer electrolyte and a preparation method thereof. The invention provides a cross-linked gel polymer electrolyte, which is obtained after the blended cross-linked polymer film fully absorbs the electrolyte; wherein, the blended cross-linked polymer film is made of a polymer substrate, PS- PEO-PS tri-block copolymer and solvent are firstly prepared by electrospinning, and then cross-linked by Friedel-Crafts reaction; wherein the mass fraction of PS-PEO-PS tri-block copolymer in the blend system is 1 % to 60%, the blending system is a blending system of a polymer substrate and a PS-PEO-PS tri-block copolymer. The polymer electrolyte obtained by the invention has high ion conductivity and other excellent electrochemical properties.

The invention relates to an acridine compound, a polymer, an application thereof, and a light-emitting device. The structural formula of this acridine compound is shown in formula (I): wherein, n 1 ~n 4 independently choose 0 or 1, and n 1 ~n 4 Not 0 at the same time; D 1 ~D 4 are independently selected from: a substituted or unsubstituted arylene group, or a substituted or unsubstituted heteroarylene group. In the invention, the acridine unit connected by spiro structure is used as the core, the arylene group and the heteroaryl group are used as the arms, and the vinyl unit is used as the terminal to construct the acridine compound. The compound is soluble in conventional solvents at room temperature, and due to the electron-donating conjugation of the nitrogen atom in the acridine unit, the electron cloud density of the entire acridine unit is relatively high, making it a good unit for transporting holes; its terminal It is a vinyl unit, cross-linked at high temperature to form a cross-linked layer that is not easily soluble in conventional solvents, and is not easily dissolved by the solvent of the next functional layer, which is beneficial to improve the luminous efficiency.

The invention relates to a fiber composite multi-layer total fluoride crosslinking ionic membrane and a preparation method thereof, which belongs to the field of functional polymer composite materials. The fluorine-containing ion exchange membrane is in a double-net structure with chemical bonding crosslinking and physical bonding crosslinking of a high valent metallic compound and an acidic exchange group and simultaneously contains reinforced fiber. The prepared ion exchange membrane has higher dimensional stability and good mechanical strength.

The invention relates to a multi-layer cross-linking ion membrane generated from perfluor ion-exchange resin, belonging to the field of functional polymer composite materials. At least one layer of the multi-layer cross-linking ion membrane has a cross-linking reticular structure, and at least one layer of the multi-layer cross-linking ion membrane contains high-valence metallic compounds; moreover, high-valence metallic compounds are added to the multi-layer cross-linking ion membrane, so that the high-valence metallic compounds and the acidic exchanging groups in the resin can physically bonded. Accordingly, the invention further improves the stability and mechanical properties of the multi-layer cross-linking ion membrane and particularly improves the performance in gas permeation prevention.

The invention relates to a micro-porous membrane compounded multi-layer fluorine-containing cross-linking doped ionic membrane and a preparation method thereof. The membrane contains 2 to 40 layers, preferably 2 to 5 layers, formed by fluorine-containing ion exchange resin which has an EW value of 600 to 1300. The total thickness of the membrane is 10 to 300 microns. At least one layer of the membrane has cross-linked network structure; at least one layer of the membrane is filled with auxiliary proton transmitter substance; at least one layer of the membrane adopts micro-porous membrane as reinforcement; and at least one layer of the membrane is provided with high valence metallic compound. The micro-porous membrane compounded multi-layer fluorine-containing cross-linking doped ionic membrane of the invention has high mechanical intensity, increases the stability of the membrane on length, width and thickness directions, has high ion exchange capability and high conductivity, and canbe applied to producing fuel cell.

The invention provides a laminated silicon dioxide microsphere and a preparing method thereof. The preparing method is simple, and the laminated silicon dioxide microsphere can be prepared within 3-4h. A hydroxyl compound coats the surface of silicon dioxide through the hydroxylation effect, then in the emulsification process, through a dispersing agent, mutual cementation of coated silicon dioxide is effectively avoided, and the dispersity is improved; then through the further utilization of emulgator, the surface tension of coated silicon dioxide is lowered, a protection layer can be formedon the surface of coated silicon dioxide, and cohesion of coated silicon dioxide is further prevented. Under the effect of a catalyst, the hydroxyl compound coating the surface of silicon dioxide issubjected to an aldolization reaction with an aldehyde group cross-linking agent, cross-linking of the aldehyde group cross-linking agent and the hydroxyl compound is achieved, and then a product which is obtained through the aldolization reaction of the cross-linking agent and the hydroxyl compound is formed on the surface of silicon dioxide.

The invention discloses a preparation method of a cross-linked water-based acrylic emulsion. It comprises the following steps: A, preparation of modified dialdehyde cross-linking agent; the general formula of said dialdehyde cross-linking agent is CHO-R-CHO, wherein R is a linear or branched alkyl group, or linear or branched The aryl group of chain; B, prepare the acrylate copolymer emulsion containing amino functional group; C, add the modified dialdehyde cross-linking agent that A step gains in the acrylate copolymer emulsion that B step gains, obtain cross-linked aqueous acrylic acid emulsion , the cross-linking reaction formula is: 2P‑NH 2 +CHO‑R‑CHO→P‑N=CH‑R‑CH=N‑P+H 2 O. The cross-linked coating film obtained by the invention has good abrasion resistance, chemical resistance, water resistance and tensile strength, and successfully solves the problem of yellowing.