47results about How to "High thermal decomposition temperature" patented technology

The invention relates to the technical field of PE wrapping films, in particular to a multi-layer co-extrusion PE stretching wrapping film which overcomes the defects in the prior art and comprises the following components: polyethylene, polyhedral oligomeric silsesquioxane, ethylene-vinyl acetate, bonding resin, polypropylene, nano zirconium oxide particles, polyether-ether-ketone, an antistatic agent, a slip agent and an ultraviolet absorbent. According to the invention, novel nano materials such as nano zirconium oxide and polyhedral oligomeric silsesquioxane are introduced, and a material formula and a preparation process are optimized, so that the multi-layer co-extrusion PE stretching and wrapping film with higher wear resistance, high temperature resistance, chemical resistance and mechanical strength is developed, and increasingly complicated and diversified market requirements are met.

The invention relates to heteroaromatic super absorbent resin and a preparation method thereof, and belongs to the technical field of polymer synthesis. The invention provides heteroaromatic super absorbent resin. The structural formula of the heteroaromatic super absorbent resin is shown as a formula I, the heteroaromatic ring super absorbent resin does not contain a methine structure, contains more heteroaromatic ring structures, and is good in thermal stability. # imgabs0 #

The present invention provides an organic compound, a mixture, a composition, a light extraction layer material and an organic electronic device. The structure of the organic compound is shown in the general formula (1), and the organic compound can be used as a light extraction layer material in an organic electroluminescent device to improve the light extraction efficiency of the device.

The invention relates to the technical field of printing ink, and discloses a preparation method of a water-borne epoxy resin binder and application of the water-borne epoxy resin binder in printing ink, water and nano titanium dioxide are added into a container, modified silicone oil is added after ultrasonic treatment, stirring and dispersing are carried out, then water-borne epoxy resin, a defoaming agent, a flatting agent and a thickening agent are added, stirring and uniform mixing are carried out, and the water-borne epoxy resin binder is obtained. The waterborne epoxy resin binder is obtained. The catechol structure of the modified silicone oil can be coordinated with the surface of the nano titanium dioxide, so that the surface coating modification of the nano titanium dioxide is realized, the agglomeration of the nano titanium dioxide is reduced, the dispersity of the nano titanium dioxide in a water-borne epoxy resin connecting material is improved, and the emulsion is free of precipitation and layering and very good in storage stability. The imino group contained in the modified silicone oil can be subjected to a curing reaction with the epoxy resin, so that a very good toughening effect is achieved, and meanwhile, the heat resistance and flame retardance of the epoxy resin are improved.

The application relates to the technical field of AOC connector, and discloses a high-toughness bending-resistant AOC connector and a preparation method.The AOC connector comprises an optical cable assembly and an AOC connector head; the optical cable assembly comprises an optical fiber, an aramid yarn layer, a polyethylene outer protective layer and a braided layer; polyethylene, 4-hydroxystyrene grafted polyethylene, 1,3,5-tri(4-benzoxazinylphenyl)benzene and the like are mixed, extruded, granulated and heat-treated to obtain the polyethylene outer protective layer; the 1,3,5-tri(4-benzoxazinylphenyl)benzene contains multiple oxazine ring crosslinking polymerization sites, and crosslinking reaction occurs with the phenolic hydroxyl structure of the grafted polyethylene, the crosslinking degree of the molecular chains in the polyethylene is increased, the polyethylene molecular chains are not prone to relative slipping under external force, the ability to resist external force deformation is increased, the polyethylene outer protective layer has good strength and high-toughness bending resistance, and the bending resistance and protection performance of the AOC connector optical cable are improved.

This invention discloses a modification method for nanocrystalline magnetic core encapsulation materials. The method includes: S1: surface functionalization modification of nano-silica and boron nitride nanosheets by grafting amino and epoxy groups, respectively; S2: blending and dispersing the modified inorganic nanofiller with low-viscosity bisphenol A type epoxy resin, flexible epoxy resin diluent, latent curing agent, and coupling agent under high shear force to form a uniform and stable modified epoxy resin composition; S3: plasma cleaning and activation treatment of the nanocrystalline magnetic core; S4: encapsulating the modified epoxy resin composition on the surface of the magnetic core using a vacuum pressure impregnation process, followed by programmed temperature curing. This invention significantly improves the mechanical strength, thermal conductivity, and heat resistance of the encapsulation layer and reduces the high-frequency dielectric constant and loss by constructing an organic-inorganic interpenetrating network and interface reinforcement.

The invention relates to a high-hardness polyurethane adhesive as well as a preparation process and application thereof, and belongs to the technical field of polyurethane materials. The high-hardness polyurethane adhesive comprises a component A and a component B. The component A comprises the following raw materials in parts by weight: 30-50 parts of polyether polyol, 10-20 parts of a cross-linking agent, 5-10 parts of a composite filler, 0.5-1 part of a catalyst and 0.5-1 part of an antioxidant; and the component B is polyisocyanate. The adhesive prepared by the invention has high hardness and good toughness.

The present invention discloses a polymer, a preparation method thereof and an application as a foam material. The structure of the polymer is shown in Formula I. The diamine monomer of the present invention is synthesized by a three-step method, the preparation route is simple, the product configuration is unique, the yield is high, and the synthesis method has universal applicability. The polyimide foam of the present invention is used as a high-temperature resistant material, and its glass transition temperature reaches 355°C, and the thermal decomposition 5% temperature reaches 520°C, which has good application prospects in high-temperature environments.

The invention belongs to the technical field of polyester fibers and discloses a method for preparing a high-strength polyester fiber containing a liquid crystal polymer. 1,3-bis(3-(biphenyl propyl)-1,1,3,3-tetramethyldisiloxane, a diol compound and a diisocyanate compound are reacted to obtain a polyester-polyurethane-based liquid crystal polymer. The polyester-polyurethane-based liquid crystal polymer is then melt-blended with polyethylene terephthalate, extruded, granulated and melt-spun to obtain a high-strength polyester fiber containing the liquid crystal polymer. The polyester-polyurethane-based liquid crystal polymer contains a benzoate structure, has good structural similarity with polyethylene terephthalate, improves the compatibility and dispersibility of the polyester-polyurethane-based liquid crystal polymer in the polyester fiber, and contains a flexible and heat-resistant organic siloxane structure and a thermally stable biphenyl group, which can significantly improve the tensile properties and heat resistance of the fiber.

The application discloses a kind of high-performance outdoor full package imitation wood composite board and preparation method thereof, relate to polyurethane composite board technical field, the full package imitation wood composite board includes base board, and the polyurethane material of setting in the lower surface and the four around of base board, and the resin material of setting in upper surface.Its preparation method includes the following steps: pouring polyurethane material in the silica gel mould after surface treatment, place base board, mould pressing, make the polyurethane material with wood texture around and lower surface of base board composite, obtain intermediate product A;Resin material is rolled on the upper surface of intermediate product A, and is dried, to obtain full package imitation wood composite board;The silica gel mould after surface treatment is prepared by transferring real solid wood board texture.

The invention relates to the technical field of battery current collectors, and discloses a high-performance composite current collector, which comprises a base film and a metal layer on at least one side of the base film, the base film is prepared from the following raw material components in parts by weight: 65 to 95 parts of PET (Polyethylene Terephthalate), 2 to 25 parts of PET grafted polyaniline, 0.2 to 5 parts of graphene oxide, 0.1 to 5 parts of a coupling agent, 1 to 5 parts of maleic anhydride grafted PET and 1 to 5 parts of imide modified PET. By adopting the composite current collector provided by the invention, the balance, the thermal decomposition temperature and the flame-retardant capability of the current collector can be improved.

The present invention relates to the technical field of acrylic resins, and discloses an acrylic resin for green, environmentally friendly, high temperature resistant ink and a preparation method thereof. The green, environmentally friendly, high temperature resistant ink acrylic resin comprises 100 parts by weight of vinyl monomer, 3-8 parts by weight of triazine-based styrene monomer, 0.7-0.8 parts by weight of initiator, and 0.5-3 parts by weight of zinc salt; the present invention introduces a styrene hard monomer structure and a triazine ring into the acrylic resin molecular chain, which is beneficial to improving the pencil hardness, mechanical properties and high temperature resistance of the paint film. The triazine-based styrene monomer contains an o-hydroxy Schiff base triazine structure, which has a strong coordination chelation effect with zinc ions, and can adsorb zinc ions in the acrylic resin molecular chain, which is not easy to wash and remove, and gives the paint film excellent antibacterial properties. The obtained acrylic resin has good practical applications in high temperature resistance and antibacterial inks.

The application belongs to the field of high polymer materials, and particularly discloses a modified basic magnesium carbonate and a PA12 composite material and a preparation method thereof.The preparation method of the modified basic magnesium carbonate comprises the following steps: adding sodium carbonate and magnesium chloride into a sodium hydroxide solution to perform a water bath reaction to obtain the basic magnesium carbonate; adding the basic magnesium carbonate and acrylic acid into deionized water to perform a water bath reaction to obtain acrylic acid modified basic magnesium carbonate; and adding the acrylic acid modified basic magnesium carbonate, glycidyl methacrylate and an initiator into an organic solvent aqueous solution to perform a water bath reaction to obtain the modified basic magnesium carbonate.The modified basic magnesium carbonate prepared by the application can decompose and absorb heat at high temperature, release water vapor and carbon dioxide and other non-combustible gases, dilute the oxygen concentration on the surface of the combustion object, and reduce the temperature of the combustion area, so as to play a role in flame retardation.In addition, the magnesium oxide produced by decomposition covers the surface of the material to form a protective layer, and further prevents the combustion.

The application provides a kind of energetic complex K-BTE and its continuous preparation method and application, by taking 1,2-di (tetrazole-5-yl) ethane as starting material, ligand solution and metal ion salt solution are continuously injected into continuous flow reaction unit by injection pump respectively, by filtering, washing, drying, obtain energetic complex crystal, develop a kind of simple continuous process, mild reaction conditions new energetic complex preparation method, and first of all, a kind of novel structure, excellent comprehensive performance energetic complex K-BTE is prepared, in addition to the characteristics of high thermal stability, energetic complex K-BTE also has the advantages of simple and efficient process method, process safety controllable, the thermal decomposition temperature of K-BTE is as high as 366.5 DEG C, the actual measured impact sensitivity is greater than 40J, the friction sensitivity is between 240N-360N, while having catalytic effect on thermal decomposition of ammonium perchlorate.The excellent performance of K-BTE makes it have great application potential as an energetic complex in the field of catalytic solid propellant combustion efficiency.

The present invention provides a flame retardant material containing bauxite and a preparation method thereof, and relates to the technical field of flame retardant materials. The flame retardant material containing bauxite of the present invention is prepared from the following raw materials in parts by weight: 25-30 parts of epoxy resin, 8-10 parts of modified sepiolite, 12-16 parts of bauxite, 12-16 parts of attapulgite-nano silicon carbide composite, 6-8 parts of curing agent, 0.5-1 parts of dispersant, 10-12 parts of hexaphenoxy cyclotriphosphazene, 6-10 parts of ammonium polyphosphate, 5-7 parts of starch, 3-5 parts of melamine, and 20-25 parts of water. The flame retardant material containing bauxite of the present invention improves the flame retardant performance, high temperature resistance and adhesion ability of the material by optimizing its composition and ratio, which is helpful to promote the technological progress and industrial upgrading of the fireproof material industry, and provides strong support for protecting the safety of life and property.

This invention relates to the field of new energy vehicle battery pack accessories technology, and discloses an ICCS integrated busbar mechanism and its processing technology. The mechanism includes an FPCA module, an aluminum busbar, an insulating bracket, and series aluminum busbars. The FPCA module is mounted on the insulating bracket to form an independent module. Its flexible circuit board uses a modified fluorinated polyimide insulating substrate, which is polymerized from 2,2'-bis(trifluoromethyl)biphenyl-4,4'-diamine and pyromellitic dianhydride in a specific ratio. The aluminum busbar is soldered to the acquisition pad of the FPCA module, and the series aluminum busbars are connected to the aluminum busbars of each module. The processing technology includes hot-pressing copper-clad board fabrication, reflow soldering, ultrasonic welding of the aluminum busbar, and laser welding of the aluminum busbars. This invention improves the high-temperature resistance and low dielectric properties of the insulating substrate, ensuring the electrical reliability of the busbar mechanism for high-current transmission and signal acquisition under complex operating conditions.

This invention discloses a high-temperature resistant modified starch filtration reducer and its preparation method, belonging to the field of petroleum drilling fluid technology. The raw material composition of the modified starch filtration reducer includes starch, a crosslinking agent, alkenylamide monomers, alkenyl sulfonic acid monomers, bicyclic olefin anhydrides, an initiator, and a solvent. This invention constructs a three-dimensional network framework of starch through crosslinking pretreatment, then introduces a rigid structure of bicyclic olefin anhydrides, and grafts and copolymerizes it with functional monomers such as alkenylamides and alkenyl sulfonic acids to obtain a modified starch filtration reducer with a dual crosslinked network structure. This product can withstand temperatures up to 200℃, possesses excellent salt and calcium resistance, has minimal impact on drilling fluid rheology, is biodegradable, and is suitable for challenging drilling operations such as deep and ultra-deep wells.

This invention discloses bridging compounds based on 1,4,2,5-dioxadiazine and their synthetic methods. The bridging compounds based on 1,4,2,5-dioxadiazine are BNTD and BNPD, synthesized through the following steps: (1) Chlorooximation reaction: 1H-pyrazole-3-aminooxime is diazotized with an acidic solution of sodium nitrite to obtain 1H-pyrazole-3-chlorooxime; (2) Ring-closing reaction: 1H-1,2,4-triazole-3-chlorooxime and 1H-pyrazole-3-chlorooxime are condensed under the action of an organic base to obtain 3,6-bis(1-nitro-1,2,4-dioxadiazine). (3) Nitration reaction: 3,6-bis(1-nitro-1,2,4-triazol-3-yl)-1,4,2,5-dioxadiazine and 3,6-bis(1H-pyrazole-3-yl)-1,4,2,5-dioxadiazine were nitrated in the presence of nitric acid to obtain BNTD and BNPD, respectively. The compounds BNTD and BNPD of the present invention have good stability.

This invention belongs to the field of UV-curable resins, specifically relating to a self-healing UV-curable resin, its preparation method, and its applications. The preparation method includes the steps of: adding p-hydroxyanisole, glycidyl methacrylate, and 4-dimethylaminopyridine to an amino-terminated prepolymer and reacting, followed by separation to obtain the resin. The preparation method of the amino-terminated prepolymer includes adding an activator to a carboxyl-terminated prepolymer and reacting it, followed by adding a polyetheramine. The preparation method of the carboxyl-terminated prepolymer includes reacting a diol and an anhydride in a solvent. The invention provides corresponding products and their applications in the preparation of UV-curable coatings, UV-curable adhesives, and 3D printing consumables. Compared to existing technologies, the coating prepared by the method provided in this invention exhibits significant self-healing function and high elongation at break.

The invention discloses an epoxy resin composition containing a phosphorus-containing flame-retardant curing agent as well as a preparation method and application of the epoxy resin composition, and belongs to the technical field of preparation of flame-retardant epoxy resin compositions. The epoxy resin composition comprises the following components in parts by weight: 80-100 parts of an epoxy resin matrix, 10-30 parts of a phosphorus-containing flame-retardant curing agent, 6-60 parts of a curing agent, 0.1-0.3 part of an accelerant, 10-30 parts of a synergistic flame retardant, 40-60 parts of filler and the like. The phosphorus-containing flame-retardant curing agent is prepared from phenyl phosphoryl dichloride and a bisphenol compound through a polymerization reaction. The phosphorus-containing flame-retardant curing agent with phenolic hydroxyl reaction active groups is prepared by using low-cost phenylphosphoryl dichloride as a raw material and is matched with an existing flame-retardant system, so that the contradiction between the flame-retardant property and the physical property (mainly Tg) of an epoxy resin material is solved; and the flame retardant grade of V-0 and the higher glass transition temperature can be achieved when the addition amount of the flame retardant is lower.

The invention relates to the technical field of sewage treatment, and discloses an MBR (Membrane Biological Reactor) sewage treatment membrane and a preparation method thereof, the preparation method comprises the following steps: step 1, dissolving and mixing; step 2, adding a functional auxiliary agent; step 3, defoaming treatment; step 4, film forming; 5, heat treatment; and step 6, cooling and curing. The volatility of DMAc is relatively low, the volatilization speed in the film forming process is relatively slow, residual volatile matter can be reduced after the film is cured, PVDF and PES can be well dissolved, uniform dispersion of a polymer is ensured, and therefore the overall quality and stability of the film are improved; the mold is placed in the environment with the temperature of 20-30 DEG C and the humidity of 30%-50%, DMAc in the polymer solution is gradually volatilized, and the beneficial effect that volatile matter cannot be released due to secondary injection molding after the treatment film is prepared is achieved.

The invention discloses a two-component polyurethane resin adhesive for circuit boards and a preparation process thereof, including an A-component adhesive and a B-component adhesive, wherein the A-component adhesive includes a fluoroacrylate monomer, a furan resin, N-(methoxymethyl)-2-acrylamide, hydroxypropyl acrylate, nano-alumina, a dispersant, and an organic solvent; and the B-component adhesive includes 1,3-diisocyanate, glycerol, 3-phenylbenzoic acid, an organic tin catalyst, polyethylene oxide, a defoamer, and an organic solvent. The invention can prepare a two-component polyurethane resin adhesive with high temperature resistance and good wetting and dispersion effect, solves the problems of poor high temperature resistance and unsatisfactory wetting and penetration effect of polyurethane resin, and realizes its application in circuit boards.

The invention relates to the technical field of new materials, and discloses an imidazole functionalized sepiolite modified epoxy resin composite material, imidazole functionalized sepiolite is used as a nano filler to blend and modify epoxy resin, in a methylhexahydrophthalic anhydride curing system, an imidazole functional group modified on the surface of sepiolite can play a role of a curing accelerator, and the curing accelerator can be used for curing the epoxy resin. An acid anhydride-imidazole curing synergistic system is formed, epoxy resin is cross-linked and cured on the surface of sepiolite, imidazole functionalized sepiolite serves as a chemical cross-linking site, movement of an epoxy resin molecular chain is limited, improvement of the thermal stability of epoxy resin is facilitated, a remarkable effect on improvement of the thermal decomposition temperature is achieved, and after imidazole functional modification, the epoxy resin can be cured on the surface of the sepiolite, so that the curing effect is good. The sepiolite is more uniformly dispersed in the epoxy resin matrix, so that the reinforcing effect of the nano filler can be better exerted, and the mechanical properties such as compression strength of the epoxy resin are obviously enhanced.

The high-temperature-resistant brake pad material is prepared from the following raw materials in parts by weight: 18 to 22 parts of boron modified phenolic resin, 10 to 15 parts of modified carbon fiber, 4 to 7 parts of aramid fiber, 9 to 13 parts of ferrotitanium powder, 10 to 15 parts of potassium magnesium titanate lamellar crystal, 3 to 5 parts of nitrile rubber powder, 4 to 6 parts of natural graphite, 3 to 5 parts of petroleum coke, 5 to 8 parts of barite and 3 to 5 parts of aluminum oxide. According to the high-temperature-resistant brake pad material, boron-modified phenolic resin serves as a base body, functional components such as modified carbon fibers, aramid fibers, ferrotitanium powder and potassium magnesium titanate lamellar crystals are matched, and through the reasonable formula design and the forming technology, on the basis that it is guaranteed that a brake pad has the excellent friction and wear performance, the high-temperature-resistant brake pad material is obtained; the thermal stability and the interface bonding strength of the material under the high-temperature working condition are remarkably improved, and the problems that a traditional brake pad material is prone to heat fading and interface stripping under the high-temperature braking condition are solved.

The application discloses three designs and synthesis of thermal crosslinking thermal activation delayed fluorescent materials based on styrene groups and research thereof, relates to the technical field of fluorescent non-conjugated polymers, and the polymer is homopolymerized by using dendritic macromonomer with styrene at both ends, and different peripheral groups are adopted to encapsulate the dendritic core. The synthesis method comprises Suzuki coupling reaction, methylation reaction and nucleophilic substitution reaction. Research shows that the quenching phenomenon of the encapsulated dendritic TADF triplet exciton is significantly inhibited. The good solubility of the polymer enables the polymer to be applied to solution processing OLED devices. In addition, the dendritic monomer is polymerized by using an in-situ polymerization mode, the polymerization reaction yield of the AIBN initiator is avoided, and the reaction cost and reaction time are greatly saved. The obtained polymer is used to manufacture non-doped OLED devices, and the OLED devices exhibit excellent electroluminescent performance. The research shows certain potential for meeting the market demand of high-performance and low-cost OLEDs.

The invention discloses a safe gel lithium ion battery diaphragm, a preparation method thereof and a gel lithium ion battery, and belongs to the technical field of lithium batteries, the key point of the technical scheme is that the preparation method of the safe gel lithium ion battery diaphragm comprises the following preparation steps: S1, adding sulfate lignin into N, N-dimethyl formamide, and stirring to obtain a mixture; carrying out ultrasonic dispersion in N, N-dimethylformamide to form a sulfate lignin suspension; s2, the diamine and sulfate lignin suspension is added into N, N-dimethylformamide to be stirred to be dissolved, dianhydride is added to be stirred to obtain a spinning solution, the weight ratio of diamine to dianhydride is 1: (1.9-2.1), and the adding amount of sulfate lignin accounts for 10%-30% of the total amount of diamine and dianhydride; and S3, spinning the spinning solution to obtain a composite fiber membrane, drying the composite fiber membrane until N, N-dimethylformamide is completely volatilized, performing imidization treatment, and cooling to room temperature to obtain the lithium ion battery diaphragm, thereby achieving the effect of improving the thermal stability of the lithium ion battery diaphragm.

The invention belongs to the technical field of adhesives, and discloses a flame-retardant organic silicon adhesive as well as a preparation method and application thereof. According to the adhesive, 4, 4 '-(propane-2, 2-diyl) bis (2-(pent-4-ene-1-yl) cyclopentane-1-formic acid) is used as a starting raw material, and esterification, siloxane ester exchange, polymerization and other reactions are carried out, so that the organic silicon flame-retardant adhesive with good thermal stability, flame retardance and safety is obtained. The flame-retardant organic silicon adhesive prepared by the invention has a wide market prospect in manufacturing of fireproof building materials, fireproof clothes, fireproof containers, automobiles and electronic products.

The application discloses intelligent temperature-regulating aluminum honeycomb composite board based on phase change material and a manufacturing process thereof, and relates to the field of building energy saving.The phase change material provided by the application is prepared from graphene composite cellulose and hydroxyethyl methacrylate as raw materials, and is formed through freezing forming, freeze drying and heat crosslinking treatment to form composite cellulose aerogel, and then vacuum impregnation of polyethylene glycol is carried out; the graphene composite cellulose is prepared by reaction of amino cellulose, epoxy functionalized graphene and epoxidized polymer, so that the heat conduction path of graphene and the rigidity and heat-resistant structure of polymer are synchronously introduced; the phase change material is filled in the aluminum honeycomb board, and then compression is carried out to obtain the intelligent temperature-regulating composite board.The phase change material prepared by the application has low leakage rate, high thermal conductivity and excellent mechanical properties, and is suitable for the field of building energy saving.

This invention relates to a PVC stabilizer, PVC composite materials, and parts comprising the same, belonging to the technical field of polymer compound compositions. The PVC stabilizer of this invention includes cerium phosphomolybdate, which imparts good thermal stability and excellent long-term aging resistance to PVC composite materials.

The invention relates to the field of structural adhesives, in particular to a single-component epoxy composition structural adhesive and a preparation method thereof. The single-component epoxy composition structural adhesive is prepared from the following raw materials: epoxy resin, a toughening agent, a curing agent, an accelerant, a silane coupling agent, a defoaming agent, a reinforcing agent, inorganic filler and the like. The finally prepared single-component epoxy structural adhesive has high and lasting bonding strength for engineering plastics such as PBT, PA and LCP and metal terminals, a cured adhesive layer has excellent flexibility and cold and hot impact resistance, high-temperature test of a reflow soldering process can be safely tolerated, and the single-component epoxy structural adhesive can be used as a single-component product, so that the structural adhesive has a good application prospect. Excellent room-temperature storage stability and heating rapid curing characteristics are required, so that the dual requirements of the modern electronic manufacturing industry on material performance and process efficiency are met.