21 results about "Epoxy amine" patented technology

The invention relates to a long-acting anticorrosive epoxy primer and a preparation method thereof, and belongs to the technical field of protective coatings. The primer is a two-component system, a component A comprises epoxy resin and a thermal latent cationic initiator, and a component B comprises an amine curing agent and alkaline silane. The decomposition temperature of the initiator is designed to be matched with the exothermic peak of epoxy-amine curing reaction, and hydrolytic condensation of alkaline silane is triggered in the curing process, so that a compact composite structure is formed. According to the structure, the adhesive force, the shielding property and the medium permeability resistance of the coating are effectively improved, and the long-acting corrosion resistance of the coating is remarkably enhanced. The invention further provides a corresponding preparation method which is simple and controllable in process and suitable for protection of metal components in a harsh corrosion environment.

The invention discloses a composite material hollow plate and a preparation method, and belongs to the technical field of composite material plate preparation. The composite material hollow plate comprises an outer plate and an inner plate, a plurality of corrugated supporting structures are connected between the outer plate and the inner plate, and a cavity is formed between every two adjacent corrugated supporting structures. A wear-resistant reinforcing agent is added into an outer plate material to improve the surface wear resistance, an epoxy-amine dual-core double-wall microcapsule is introduced into an inner plate material to enhance the crack repairing capacity, and a shape memory reinforcing agent is added into a corrugated supporting structure material to endow the material with the shape memory characteristic. The invention solves the technical problems of difficulty in consideration of strength and toughness, short service life, poor buffer performance, insufficient interface bonding strength and the like of the existing composite material hollow plate, and is particularly suitable for steel coil packaging and other application scenes requiring repeated use and high reliability.

The invention discloses a high-thermal-stability epoxy amine adduct, a single-component pouring sealant and a preparation process of the high-thermal-stability epoxy amine adduct, the high-thermal-stability epoxy amine adduct is prepared by reacting a single-epoxy compound containing a cyclic structure, aromatic polyamine and a double-epoxy compound containing a flexible chain segment according to a specific molar ratio, and the molecular structure of the high-thermal-stability epoxy amine adduct has rigidity, flexibility and latency; the single-component pouring sealant taking the addition product as a curing agent comprises epoxy resin, the addition product, inorganic filler, a silane coupling agent and the like, the pouring sealant can be stably stored at room temperature, a three-dimensional network structure formed after heating and curing is compact, and the pouring sealant has high glass transition temperature, high thermal decomposition temperature and excellent long-term thermal aging performance; and the epoxy resin is especially suitable for potting protection of electronic components with extremely high requirements on heat resistance and reliability.

The present application relates to the technical field of surface modification materials, and particularly relates to a perfluoroalkyl silane coupling agent for material surface modification and a preparation method thereof. The coupling agent comprises synergistically modified perfluoroalkyl triethoxysilane, an organic small-molecule functional regulator, an acid catalyst, a surfactant, a stabilizer, ethanol and deionized water. The synergistically modified perfluoroalkyl triethoxysilane is prepared by synergistic modification of perfluoroalkyl triethoxysilane, monohydroxyl column [5] arene, octakis(glycidyl ether propyl) silsesquioxane, N-(2-aminoethyl)-3-aminopropyl trimethoxysilane and 2,6-pyridine dimethyl formaldehyde through host-guest inclusion, epoxy-amine ring-opening reaction and Schiff base condensation reaction, and the organic small-molecule functional regulator is 9,10-dihydroxyanthracene. The preparation method is simple and suitable for surface modification of various substrates such as glass, metal, ceramic and polymer materials.

This invention relates to the field of polymer fine chemical materials and the synthesis technology of special functional waterborne coatings, specifically to an aldehyde-capturing self-healing waterborne coating and its preparation method. The invention discloses an aldehyde-capturing self-healing waterborne coating and its preparation method. This coating uses a side-chain carboxylated ketone-containing waterborne polyurethane-acrylate composite emulsion as the core film-forming material, forming dynamic hydrazone crosslinks with adipic acid dihydrazide, and introducing an epoxy-amine permanent crosslinking network. The side-chain carboxyl groups are derived from maleic anhydride grafted and undergo ring-opening transformation upon contact with water, and are covalently fixed to the polymer side chains, preventing the migration of small molecule acids and ensuring coating storage stability. After the coating cures, environmental moisture triggers the dissociation of side-chain carboxyl groups, releasing protons and catalyzing the dynamic exchange of hydrazone bonds, achieving room-temperature self-healing. Excess hydrazone groups in the coating capture aldehyde pollutants, and the newly generated hydrazone bonds introduce polar groups and crosslinking sites, enhancing network stability.

Disclosed herein is an aqueous coating composition containing an aqueous epoxy resin dispersion, an aqueous amine-functional resin dispersion and an aromatic carboxylic acid. The aqueous dispersion contains at least one specific di- and / or polyfunctional monomeric amine and at least one resin component including at least one specific polyfunctional organic amine. Further disclosed herein is a kit-of-parts including a base varnish containing the aqueous epoxy resin dispersion and a curing component containing the aqueous amine-functional resin dispersion as well as the aromatic carboxylic acid. Additionally disclosed herein is a process for producing a coating on the substrate as well as coated substrates resulting from said process. Cured coating layers formed from said compositions exhibit a good adhesion to the substrate as well as a high intercoat adhesion and blistering stability under humidity conditions without negatively influencing the excellent sandability and the good stone chipping properties.

The invention belongs to the technical field of epoxy resin coatings, and particularly relates to a bi-component aliphatic polyamine epoxy graphene acid-resistant coating which comprises epoxy resin in a component A and a curing agent in a component B. The curing agent is perfluoroalkyl secondary amine. Alicyclic diamine and perfluoroalkyl ethylene are subjected to a Michael addition reaction under the action of a catalyst cupric trifluoroacetate, the cupric trifluoroacetate catalyst effectively prevents the perfluoroalkyl ethylene and a generated target product secondary amine from being further subjected to an excessive addition reaction, and the reaction efficiency is improved; after the curing agent is subjected to cross-linking reaction with the epoxy resins in the scheme, a large number of ether bonds existing in a traditional phenolic epoxy amine curing system can be eliminated, so that nucleophilic reagent attack sites are reduced, meanwhile, the curing agent perfluoroalkyl secondary amine is converted into a tertiary amine structure, coordination activation of H to nitrogen atoms is reduced, and a coating is more stable.

The application discloses a water-based high-solid-content epoxy micawHITE intermediate paint for heavy-duty corrosion protection and a preparation method and application thereof, and comprises components A and B; the component A comprises water-based epoxy dispersion, a toughening agent, titanium barium powder, micawHITE and polyamide wax paste; the solid content of the water-based epoxy dispersion is not less than 70%, and the epoxy equivalent of the water-based epoxy dispersion is 270-330; the component B comprises water-based epoxy amine curing agent, micawHITE and polyamide wax paste; the HLB value of the water-based epoxy amine curing agent is 10-18, and the solid content is greater than 50%. When the curing agent is added during construction, only a small amount of water is needed to dilute, so that the construction viscosity and requirements of airless spraying can be achieved. The water-based high-solid-content epoxy micawHITE intermediate paint for heavy-duty corrosion protection prepared by the application has high film thickness for one-time construction, can reach a dry film of more than 180 microns, and can meet the construction requirements of heavy-duty corrosion protection paint, and the paint film is not cracked, has no thick edges, and does not sag.

Cathodic electrocoating composition with improved edge protection and coating appearance are provided. An exemplary cathodic electrocoating composition includes an aqueous carrier, a film forming binder dispersed in the carrier and including an epoxy-amine adduct and a blocked polyisocyanate crosslinking agent; a pigment paste; a water-soluble cellulose ether; and a cationic microgel dispersion which is prepared by a process comprising dispersing in aqueous medium a mixture of a cationic polyepoxide-amine reaction product which contains amine groups selected from the group consisting of primary amine groups, secondary amine groups, and mixtures thereof and a polyepoxide crosslinking agent and heating the mixture to a temperature sufficient to crosslink the mixture to form the cationic microgel dispersion. The water-soluble cellulose ether may be hydroxyethyl cellulose.

The invention belongs to the technical field of biodegradable lubricating oil, and particularly discloses biodegradable lubricating oil and a preparation method thereof. The biodegradable lubricating oil provided by the invention is prepared from the following components in parts by mass: 25 to 35 parts of modified composite vegetable oil, 2 to 8 parts of methacrylate grafted modified chitin nanocrystals, 4 to 9 parts of a thickening agent, 0.5 to 1.5 parts of an antioxidant and 0.5 to 1.0 part of a tackifier. According to the invention, the composite vegetable oil subjected to epoxy-amine ring opening modification is used as basic lubricating oil, and then methacrylate grafted modified chitin nanocrystals and other additives are introduced, so that the plant-based lubricating oil has high wear resistance and excellent extreme pressure property, and also has the properties of low condensation point, biodegradability and the like.

The present application relates to the technical field of material processing, and discloses a multi-color injection molding process for intelligent wearable equipment, which comprises the following steps: preparing hard granules by melt extruding polybutylene terephthalate resin and epoxy-containing styrene-acrylonitrile copolymer; preparing soft granules by mixing thermoplastic polyurethane elastomer and amino-terminated hyperbranched polyamide-ester auxiliary; laser etching the hard skeleton bonding surface to form microtexture; and using segmented speed control in the second injection molding, using the shear friction heat generated by high-speed pulse injection to activate the epoxy-amine chemical cross-linking reaction at the interface. The present application realizes the firm combination of hard and soft materials without adhesives through the synergistic mechanism of rheological matching and in-situ chemical bonding, significantly improves the bonding strength and moisture and heat aging resistance of the interface, simplifies the process flow, and is suitable for the precision manufacturing of intelligent wearable equipment.

The invention discloses a disposable isolation plug with long-acting aging resistance and a preparation process thereof, belongs to the technical field of isolation material preparation, and aims to solve the technical problem that the aging resistance and solvent resistance of a disposable isolation plug in the prior art need to be further improved. According to the invention, a silicon-oxygen hybrid triazine compound is adopted as a matrix, the silicon-oxygen hybrid compound is introduced to construct a stable spatial network, and silicon shell triazine microspheres and epoxy amine cured flexible particles are assisted to jointly adjust the interface structure and chain segment motion characteristics of the material; the obtained disposable isolation plug forms a structural system with balanced support and recoverable deformation capability, and all the components form a continuous and stable mechanical response path in the system, so that the material shows low compression permanent deformation rate and good size retentivity under the conditions of normal temperature, high temperature, soaking and aging.

Resins and formulations of individual monomers bearing both vinyl ester and epoxy functionality were either synthesized or formulated such that vinyl ester components capable of polymerizing by photo-induced, free radical polymerization were mixed with step-growth epoxy-amine systems, facilitating sequential cure. The vinyl ester component was photopolymerized using vat photopolymerization (VPP). Additionally, the preparation of bio-based photo curable thermosetting resins that have tailorable thermal and mechanical properties is provided. All monomers and polymers described herein are useful in a variety of applications, including additive manufacturing applications.

The present invention relates to novel compounds and their use as adhesion promoting additives. In particular, the present invention relates to additives for promoting adhesion between epoxy amines and polysiloxanes. In marine and protective coating applications, the additives are particularly useful for promoting adhesion between epoxy amine coatings and polysiloxane coatings. The present invention also relates to methods of promoting adhesion between epoxy amines and polysiloxanes.

The invention relates to a preparation method and application of a polyhydroxy phosphine-nitrogen flame retardant, the polyhydroxy phosphine-nitrogen flame retardant is prepared by recycling nitrogen-containing polyol in a thermosetting ester epoxy / amine cured product degradation product and further reacting, and the preparation method comprises the following steps: (1) carrying out alcoholysis on a thermosetting ester epoxy / amine cured product by using ethylene glycol and sodium hydroxide to obtain degradation liquid; (2) filtering the degradation liquid, carrying out rotary evaporation to remove ethylene glycol, aging with ethanol to remove salt, adjusting the pH value to be neutral, and carrying out rotary evaporation to obtain nitrogen-containing polyol EP / N-8OH; and (3) mixing the EP / N-8OH with triethylamine and tetrahydrofuran, dropwise adding diphenyl phosphinyl chloride under the protection of nitrogen, and performing treatment after reaction to obtain P, P-diphenyl phosphinic acid-3-[(5-{[bis (2, 3-dihydroxypropyl) amino] methyl}-3, 3, 5-trimethyl cyclohexyl) (2, 3-dihydroxypropyl) amino]-2-hydroxypropyl ester (polyhydroxy phosphine nitrogen flame retardant, DPP-P). The application method comprises the following steps: mixing DPP-P with bisphenol A epoxy resin E-51, a curing agent 1, 2, 3, 6-tetrahydrophthalic anhydride and a catalyst N, N-dimethylamine, and carrying out preheating, defoaming and stepped heating curing, so that the prepared flame-retardant modified epoxy resin E51-DPP-P has good flame retardance and mechanical properties.

The application discloses a kind of composite hollow plate and preparation method, belong to composite plate preparation technical field.Composite hollow plate includes outer plate and inner plate, and a plurality of corrugated support structures are connected between outer plate and inner plate, and adjacent corrugated support structures are cavity.Outer plate material is added wear-resistant reinforcing agent to improve surface wear resistance, and epoxy-amine binuclear double-wall microcapsule is introduced in inner plate material to enhance crack repair ability, and shape memory reinforcing agent is added in corrugated support structure material to give material shape memory characteristics.The application solves the technical problems that the strength and toughness of the existing composite hollow plate are difficult to consider, the service life is short, the cushioning performance is poor, and the interface bonding strength is insufficient, and is especially suitable for steel coil packaging and other application scenarios that require repeated use and high reliability.

The invention relates to the technical field of batteries, in particular to a silicon-based negative plate, a preparation method thereof and a battery. The silicon-based negative plate comprises a current collector; the active layer is arranged on the surface of at least one side of the current collector in the thickness direction, and the active layer comprises an active material, a binding phase and a conductive agent; wherein the active material comprises a carbon-based active material and a silane coupling agent modified silicon-based active material; the binding phase comprises a three-dimensional network structure formed by epoxy-amine. According to the silicon-based negative plate, on the premise that the system complexity is not increased, through the synergistic effect of interface chemical bonding and a binding phase toughness network, three-dimensional inhibition of the volume effect of a silicon-based material, precise regulation and control of technological parameters and long-term stability of an electrode structure and a conductive network are synchronously achieved.

The present application relates to the technical field of marine engineering materials, and discloses a sharkskin structure super-hydrophobic marine protective coating based on laser etching and a method thereof.The coating takes foamed copper as a substrate, constructs a sharkskin biomimetic microcavity array through laser etching, and sequentially loads a silane-modified epoxy amine layer, a silane-quaternary ammonium chitosan composite modified candle soot nanoparticle layer.The present application further introduces a self-repairing microcapsule composite modification system, a substrate interface plasma grafting-oxidation transition layer synergistic strengthening technology and a broad-spectrum anti-biofouling composite system, discards fluorine-containing compounds, utilizes waste, has super-hydrophobic, corrosion-resistant, impact-resistant, oil-water separation and anti-biofouling multifunction, and is outstanding in mechanical stability and environmental protection, and is suitable for marine equipment protection such as ships, offshore wind power and the like.

The invention relates to the technical field of ocean engineering materials, and discloses a sharkskin structure super-hydrophobic ocean protective coating based on laser etching and a method thereof. According to the coating, foamy copper serves as a substrate, a sharkskin bionic microcavity array is constructed through laser etching, and a silane modified epoxy amine layer and a silane-quaternized chitosan composite modified candle ash nano-particle layer are sequentially loaded. According to the invention, a self-repairing microcapsule composite modification system, a substrate interface plasma grafting-oxidation transition layer synergistic enhancement technology and a broad-spectrum anti-biofouling composite system are further introduced, fluorine-containing compounds are abandoned, wastes are utilized, and multiple functions of super-hydrophobicity, corrosion resistance, impact resistance, oil-water separation and biofouling resistance are achieved; mechanical stability and environmental protection performance are outstanding, and the device is suitable for protection of marine equipment such as ships and offshore wind power.

The application discloses a water-based epoxy / amine composite medium-high temperature chemical sand consolidating agent for offshore oil fields and a preparation method and application thereof. First, an alicyclic modified epoxy resin is mixed with a hydrophilic dispersible small molecular weight type hydrogenated bisphenol A glycidyl ether to obtain an epoxy resin premix solution; then, a modified polyurethane polymer composite additive, dimer acid diglycidyl and part of water are mixed and ultrasonically dispersed to obtain a modified additive dispersion solution; and then, the modified additive dispersion solution, a surfactant modified phosphate ester polymer dispersant and a compounded amine curing agent are added into the epoxy resin premix solution to obtain the water-based epoxy / amine composite medium-high temperature chemical sand consolidating agent. The water-based epoxy / amine composite medium-high temperature chemical sand consolidating agent is designed through medium-high temperature curing, is environmentally friendly, and is synergistically compounded with the amine, and still exhibits excellent permeability and consolidation strength in a high-temperature high-salt environment of 45 DEG C to 100 DEG C, is significantly better than traditional solvent type products, and meets the sand prevention requirements of medium and deep layers in offshore oil fields.

It is described a method of producing a wind turbine blade or a part thereof, the method comprising:i) providing a wind turbine blade preform that comprises a resin, in particular an epoxy amine resin, with a cleavable functional group, in particular at least one of an acetal and a ketal functional group, at the resin surface; andii) processing the resin surface by inducing a hydrolysis reaction with respect to the cleavable functional group.Further, a wind turbine blade and a use of a hydrolysis reaction are described.