26results about How to "Increase crosslink density" patented technology

The application belongs to the technical field of sand consolidation agent preparation, and particularly relates to a sand consolidation agent and a preparation method thereof. The sand consolidation agent is composed of component A and component B. The component A is composed of the following raw materials: a diphenyl phenolic epoxy resin, hexakis(4-hydroxymethylphenoxy)cyclotriphosphazene, modified nano calcium zirconate, cage octakis(aminophenyl)silsesquioxane, n-butyl glycidyl ether, KH-550 silane coupling agent, polyether amine, fumed silica and defoaming agent. The component B is composed of the following raw materials: polyborosilazane and 2-ethyl-4-methyl imidazole. The cage octakis(aminophenyl)silsesquioxane in the raw material of the sand consolidation agent strengthens the network structure stability through chemical bonding, the hexakis(4-hydroxymethylphenoxy)cyclotriphosphazene realizes thermal stabilization through chemical bonding and physical dispersion, and the modified nano calcium zirconate provides physical support. The three components synergistically improve the heat resistance of the system.

This invention discloses a cashew nut shell bisphenol and its preparation method and application. The preparation method of the bisphenol is as follows: First, cashew nut shell phenol, formaldehyde, and an alkaline catalyst are mixed and stirred evenly, and reacted at a certain temperature to obtain hydroxymethylated product A; product A is washed with water several times until the pH is neutral, and then centrifuged to remove water to obtain product B; product B is mixed with phenol and an acidic catalyst and stirred evenly, and reacted at a certain temperature to obtain product C after the phenol-alcohol reaction; product C is washed with water until neutral, and then distilled under reduced pressure to obtain the cashew nut shell bisphenol product. This invention utilizes the structural characteristics of cashew nut shell phenol, which has both a benzene ring and an alkane chain, to obtain a bisphenol structure that combines the rigidity of the benzene ring with the toughness of the long alkane chain on cashew nut shell phenol, while protecting the highly reactive phenolic hydroxyl group. Moreover, this bisphenol is green and low in toxicity, meeting the requirements of environmental protection and sustainable development. The epoxy coating prepared using this bisphenol has high crosslinking density, good corrosion resistance, and excellent mechanical properties.

The present application relates to the technical field of chemical product processing, in particular to a low-gloss polyacrylate resin composition, a preparation method and application thereof, which comprises a modified polyacrylate resin solution, an epoxy-siloxane modifier, a vinyl trimethoxysilane oligomer, an organic metal catalyst, a viscosity regulator and a polymerization inhibitor; the ester bond in the modified polyacrylate resin is fixedly protected by the epoxy-siloxane modifier, and the ability of the epoxy-siloxane modifier is further enhanced by the vinyl trimethoxysilane oligomer, so that the problem that the gloss of the extinction type polyacrylate resin containing a bulky side group is irreversibly increased due to ester bond hydrolysis in a hot and humid environment is solved.

This invention discloses a supported anti-sulfurization reducing agent and its preparation method, relating to the technical field of rubber additives. A supported anti-sulfurization reducing agent includes an adhesive layer and an inner capsule. The adhesive layer is formed by blending a carrier rubber and a fatty acid salt. The inner capsule includes a core material and an inner capsule wall. The core material is the anti-sulfurization reducing agent, while the inner capsule wall is formed by reacting and curing an amino-modified liquid isoprene rubber and a urea-formaldehyde prepolymer. This application, by using microencapsulation, prepares an anti-sulfurization reducing agent with a double-layered supported structure. This not only effectively improves the problems of poor compatibility and difficult dispersion of pure anti-sulfurization reducing agents in rubber compounds, but also effectively protects the active ingredients, which is beneficial for improving the actual utilization rate of the anti-sulfurization reducing agent, reducing the amount of anti-sulfurization reducing agent added, and thus reducing the production cost of rubber products.

This application relates to a passivation treatment solution, aluminum alloy components, and a method for preparing the same. The passivation treatment solution comprises a solvent and components dispersed in the solvent at the following concentrations: fluorozirconate 5 g / L–30 g / L, fluorinated silane coupling agent 10 ml / L–50 ml / L, polyphenol complexing agent 1 g / L–8 g / L, and silicate 5 g / L–25 g / L. The passivation treatment solution, through a multi-component synergistic formulation composed of fluorozirconate, fluorinated silane coupling agent, polyphenol complexing agent, and silicate, exhibits different functions and molecular bridging synergistic effects. After passivation treatment of anodized aluminum alloys, the alkaline corrosion resistance of the aluminum alloys can be significantly enhanced.

This invention belongs to the field of fabric technology, specifically relating to a high-strength abrasion-resistant composite fabric and its preparation process. The high-strength abrasion-resistant composite fabric includes a base fabric and an abrasion-resistant layer. The base fabric is made of a blend of polyester and cotton fibers in a mass ratio of 2-3:1. The abrasion-resistant layer comprises the following components by weight: 50-60 parts polyurethane resin; 8-10 parts modified nano-zirconia; 3-5 parts fluorinated silane phenol; 0.6-0.8 parts dispersant; and 40-50 parts organic solvent. The composite fabric provided by this invention includes a base fabric and an abrasion-resistant layer. This invention modifies the abrasion-resistant layer by adding modified nano-zirconia and fluorinated silane phenol, thereby improving the overall performance of the composite fabric and obtaining a high-strength composite fabric with good abrasion resistance, waterproof performance, warmth retention, and antibacterial properties. It is suitable for making functional jacquard fabrics using a jacquard process.

This invention relates to a multifunctional bioactive dental bulk filling composite resin and its preparation method. The composite resin comprises an organic resin matrix and an inorganic filler; the organic resin matrix comprises polymerizable resin monomers and a photoinitiator system, the polymerizable resin monomers comprising dimethacrylate monomers and E-POSS; the inorganic filler comprises nMgO and sSiO2 with a silanized surface. The preparation method includes the following steps: preparing nMgO powder using a sol-gel method combined with a gradient calcination process; preparing submicron-sized sSiO2 using the Stöber method and subjecting it to surface silanization treatment to obtain silanized sSiO2; mixing the polymerizable resin monomers, E-POSS, and the photoinitiator system, stirring in the dark until a homogeneous resin matrix is ​​formed; adding the obtained nMgO and silanized sSiO2 to the resin matrix in a specific ratio and mixing and dispersing evenly to obtain an uncured paste-like composite resin.

The invention discloses an ultrathin back-drilled base plate and a preparation method thereof, and a circuit board and a processing method thereof, and the ultrathin back-drilled base plate comprises a structural layer, a first adhesive layer disposed on one side of the structural layer, and a second adhesive layer disposed on one side, opposite to the structural layer, of the first adhesive layer. Wherein the structural layer is made of a composite material containing a first high-heat-resistance polymer and a reinforcing filler; the material of the first adhesive layer comprises high-molecular resin, and the high-molecular resin contains at least one of a second high-heat-resistance polymer and a hot-melt adhesive, wherein the main chain of the second high-heat-resistance polymer contains an aromatic ring and / or a heterocyclic ring; and the material of the second adhesive layer comprises a hot melt adhesive. According to the invention, extremely high physical rigidity and chemical barrier capability can be maintained in circuit board hot pressing and wet processing processes, and the defects of back drilling hole flashing and orifice retreating are effectively inhibited; and the controlled interface stripping force is utilized in the plate stripping stage, so that the integral pure physical tearing of the base plate is realized, the secondary erosion of chemical film stripping liquid is avoided, and the residual glue on the surface of the base plate is eliminated.

This invention relates to the field of coating technology, specifically to a silane-modified polyurethane acrylate resin, its preparation method, and an anti-corrosion coating. The silane-modified polyurethane acrylate resin, by weight, comprises the following components: 25-45 parts polyether polyol, 10-20 parts first plasticizer, 3-6 parts isocyanate, 0.002-0.005 parts inhibitor, 5-15 parts first end-capping agent, 6-18 parts second end-capping agent, 0.002-0.005 parts resin catalyst, and 0.5-2 parts photoinitiator; wherein the first end-capping agent includes pentaerythritol triacrylate and / or polydipentaerythritol pentaacrylate; and the second end-capping agent includes trimethoxysilane and / or triethoxysilane. It can achieve both light curing and rapid moisture curing, and when used in anti-corrosion coatings, it provides characteristics such as fast curing speed, good anti-corrosion effect, high strength, and good flexibility, enabling long-term resistance to the impact of sea waves.

The application discloses a kind of based on isoliquiritigenin biological base temperature-resistant antibacterial foam cotton material and preparation method and application thereof, the foam cotton material is obtained by foaming based on the main chain type benzoxazine resin of isoliquiritigenin biological base, with maleic anhydride, foaming agent master batch, the main chain type benzoxazine resin of based on isoliquiritigenin biological base molecular formula as shown below.The application is prepared with the main chain type benzoxazine resin of isoliquiritigenin biological base as organism to obtain the benzoxazine foam with temperature-resistant antibacterial property of body.The foam cotton material of the application has the following advantages: based on the molecular structure of isoliquiritigenin, product has excellent antibacterial property;High crosslinking density benzoxazine gives product excellent temperature resistance;The product thermal conductivity is as low as 0.033W / (m·K), and the product has wide application in medical equipment, electronic equipment, new energy automobile and other fields.

This invention discloses a corrosion-resistant tetrapropylene fluororubber sealing material for harsh environments in oil and gas fields, its preparation method, and its application. The sealing material is composed of the following components in parts by weight: 100 parts of tetrapropylene fluororubber raw rubber, 4-10 parts of methacryloxypropyl cage-like polysilsesquioxane, 1-3 parts of peroxide primary crosslinking agent, 30-60 parts of reinforcing filler, and 2-10 parts of processing aid. This invention uses methacryloxypropyl cage-like polysilsesquioxane as a co-crosslinking agent. Its inorganic Si-O-Si cage-like skeleton fundamentally eliminates the technical defects of traditional ester-based co-crosslinking agents, which are prone to hydrolysis, significantly improving the chemical stability of the crosslinking network in high-temperature acidic media. Combined with the synergistic effect of the reinforcing filler, the resulting material can meet the sealing requirements of harsh conditions such as high temperature, high pressure, and multi-media corrosion in oil and gas fields. The preparation process is simple and suitable for industrial production.

This invention relates to a rapid-curing epoxy floor coating and its preparation method, belonging to the field of coating technology. Through the synergistic effect of hydrophobic modification of siloxanes and shielding by three-dimensional network blended fillers, a comprehensive anti-corrosion and water-resistant system from the surface to the interior is constructed. This solves the common industry problems of high water absorption, easy water vapor penetration, easy whitening and blistering under long-term high humidity, and interlayer delamination in traditional water-based epoxy floor coatings. In the preparation process of the modified epoxy resin, long-chain hydrophobic flexible segments of polypropylene glycol are introduced, and hydrophobic segments are also introduced through esterification grafting to achieve physical hydrophobicity. Then, hyperbranched macromolecules are synthesized in situ, and flexible acidified polyamide is covalently bonded to rigid lanthanum trioxide, constructing a continuous three-dimensional cross-linked network inside the coating. This fills the micropores of the epoxy matrix, extends the penetration path of corrosive media, and improves the anti-corrosion performance of the epoxy floor coating in harsh corrosive environments.

This invention discloses a multi-element doped porous carbon and its preparation method, belonging to the technical field of porous carbon materials. The preparation method includes the following steps: S1, mixing phenol, 4-(2-epoxyethylenemethoxy)phenol, formaldehyde aqueous solution, and a catalyst to obtain a mixed solution; S2, ultrasonicating modified graphene oxide in anhydrous ethanol to obtain a modified graphene oxide solution; S3, adding the modified graphene oxide solution to the mixed solution, heating and reacting, then adding a curing agent, stirring, and after the reaction is complete, dehydrating, drying, grinding, and curing to obtain a modified graphene oxide / phenolic resin; S4, carbonizing the modified graphene oxide / phenolic resin to obtain a carbonized material; S5, activating the carbonized material to obtain multi-element doped porous carbon. This invention ultimately yields multi-element doped porous carbon with both high conductivity and abundant pseudocapacitive active sites.

The application discloses a kind of glass hydrophobic coating and preparation method thereof, the coating includes following weight parts raw materials: methyl acrylate 15-20 parts, butyl acrylate 25-30 parts, modified monomer 5-10 parts, glycidyl methacrylate 8-10 parts, modified additive 1.5-3 parts, 2,6-di-tert-butyl-p-cresol 0.1-0.3 parts, 2-hydroxy-2-methyl-1-phenyl-1-propanone 2-3 parts, adipic acid dihydrazide 3.5-4 parts and dimethylbenzene 40-60 parts, coating film surface contains fluorine-containing alkane polysiloxane, so that the hydrophobic property of smearing is greatly improved, in coating curing process, methoxy in modified additive will hydrolyze to generate silanol, a part is condensed with the silanol on glass surface and forms firm Si-O-Si bond, and then the adhesion of coating film is increased, the POSS cage in modified additive is the nanometer core of inorganic silicon dioxide, so as to improve the surface hardness and scratch resistance of coating.

This invention relates to the field of phenolic resin technology, specifically to a method and apparatus for producing phenolic resin. The method involves adding phenol, cresol, tert-butylphenol, and cashew phenol to a mixing tank and mixing them evenly to form a mixed phenol. The mixed phenol is then mixed with an alkaline solution in a mixer to obtain a mixed liquid. The mixed liquid is then reacted with an aqueous formaldehyde solution in a first circular reactor to obtain a prepolymer liquid. The prepolymer liquid is then reacted with trimethylhydroxyethyl ethylenediamine in a second circular reactor to obtain phenolic resin. The mixing tank, mixer, first circular reactor, and second circular reactor are connected sequentially. The phenolic resin production method and apparatus provided by this invention increase the contact area and heat dissipation effect of the materials during the reaction process, promoting rapid reaction and driving the upgrading of phenolic resin towards high performance and environmental friendliness, producing high-solids, low-viscosity phenolic resin products.

The application provides a rubber composition for preparing adhesive glue, the adhesive glue and a preparation method and application thereof. The rubber composition comprises, in parts by weight: 100 parts of base rubber, 100-500 parts of softening agent, 3-15 parts of tackifier, 5-40 parts of lignin modified glass microbeads, 4-44 parts of auxiliary agent, 2.5-7 parts of vulcanizing agent and 1-1.5 parts of vulcanization accelerator. The lignin modified glass microbeads comprise hollow glass microbeads and lignin coupled on the surface of the hollow glass microbeads. The application introduces the vulcanizing agent to vulcanize the rubber composition under mild conditions to obtain the adhesive glue, thereby simplifying the curing process of the adhesive glue. Meanwhile, through the synergistic effect among the components in the rubber composition, the flexibility and elasticity of the prepared adhesive glue and the matching property of the adhesive glue with the dynamic deformation of the tire are effectively improved, thereby reducing the delamination or tearing phenomenon between the soundproof cotton and the inner wall of the tire, and the adhesive effect of the adhesive glue is significantly improved.

The application discloses a plugging glue and a preparation method thereof. The plugging glue raw material comprises the following components in percentage by mass: 9-25% of photocuring resin, 0.5-1% of a photo initiator, 70-85% of modified inorganic fillers and 4-6% of modified heat-conducting fillers; the modified inorganic fillers are inorganic fillers modified by a silane coupling agent; and the modified heat-conducting fillers are heat-conducting fillers modified by a silane coupling agent. The photocuring resin, the modified inorganic fillers and the modified heat-conducting fillers are compounded, so that the plugging glue has excellent viscosity and rapid curing performance, the shortcomings of traditional high polymer adhesives are overcome, and the plugging glue can be used for rapidly plugging the inflatable equipment under pressure, and can be applied to the rapid pressure plugging of the sand eye cracks, micro cracks and annular leaking parts of the inflatable equipment.

This disclosure provides a silicon-carbon anode sheet, its preparation method, and a soft-pack lithium battery. The preparation method of the silicon-carbon anode sheet involves: dissolving water-soluble conductive polyaniline in an organic solvent, mixing it with CMC adhesive, and then mixing it with silicon-carbon slurry and a multifunctional organophosphonic acid crosslinking agent (mixing temperature: 15℃-25℃) to obtain an anode slurry; coating the anode slurry onto a negative current collector to obtain a silicon-carbon anode sheet semi-finished product; and sequentially subjecting the silicon-carbon anode sheet semi-finished product to pre-baking (90℃-120℃) and vacuum drying (70℃-90℃, time: 2h-5h) to obtain the silicon-carbon anode sheet. This method, by adding multifunctional organophosphonic acid crosslinking agents and water-soluble conductive polyaniline, facilitates the formation of a three-dimensional conductive suppression network with high conductivity, uniform and continuous conductivity, strong toughness and strong self-healing ability. This enhances the constraint on the negative electrode slurry, reduces the volume expansion rate to <15%, inhibits silicon-carbon cracking, and improves the self-healing ability of the three-dimensional conductive suppression network, thus broadening the application of high-capacity silicon-carbon negative electrode sheets in soft-pack lithium batteries.

The invention discloses soluble polyimide resin with high temperature resistance and stable thermal size as well as a preparation method and application of the soluble polyimide resin. The soluble polyimide resin has a structure as shown in the following formula, n is more than 0 and less than or equal to 10, and X is more than or equal to 0.5 and less than 1. The polyimide resin provided by the invention has the characteristics of low melt viscosity, high solubility, stable thermal size of a cured product and ultrahigh heat resistance, and solves the technical problems of poor manufacturability, high thermal expansion coefficient of the cured product, insufficient heat resistance and poor interface of a composite material in the existing thermosetting polyimide resin.

This application relates to the field of cable technology, disclosing a flexible high-strength insulated cable material, its preparation method, and a power cable. The material formulation includes ethylene propylene diene monomer (EPDM) rubber, ethylene-octene copolymer, magnesium hydroxide, solid maleic anhydride, zinc methacrylate, α-methylstyrene dimer, dicumyl peroxide, and a compound antioxidant. During processing, the maleic anhydride undergoes ring-opening upon heating, consuming free water on the surface of magnesium hydroxide in situ, thus improving powder dispersion. The α-methylstyrene dimer acts as a chain transfer agent, inhibiting the long-chain homopolymerization of zinc methacrylate and preventing the formation of hard, brittle crosslinking points within the matrix. The polar graft ends and the hydroxyl groups on the magnesium hydroxide surface construct a reversible coordination network containing metal ion bonds. This invention solves the problems of difficult dehydration and brittle crosslinking in highly filled flame-retardant materials, enabling the material to dissipate strain energy through ion node slippage when stretched or bent, thus possessing high flame retardancy, high tensile strength, and excellent flexibility.

The application provides a kind of phthalocyanine dye containing polymerizable group and a synthesis method and application thereof.The application relates to the field of functional organic dyes, and provides a kind of phthalocyanine dye containing polymerizable group and a synthesis method and application thereof, which introduces halogen atoms, long alkyl chains and polymerizable active groups into phthalocyanine as a parent structure.The active groups introduced can be crosslinked with resins or monomers in a color photoresist component, so that the stability of a thin film can be improved, and the transmittance loss can be reduced.The application overcomes the problem that the light resistance, heat resistance and migration resistance of dye molecules in the prior art are still much poorer than those of pigments.A kind of phthalocyanine dye containing polymerizable group has the structure shown in the following general formula I.

This invention discloses a nano-silicon modified epoxy resin arc-resistant coating for GIS equipment. The coating comprises bisphenol A type epoxy resin, alicyclic epoxy resin, spherical nano-silicon, spherical nano-SiO₂, aluminum borate whiskers, curing agent, and additives. The nano-silicon and nano-SiO₂ work synergistically to enhance thermal conductivity and homogenize the electric field at the nanoscale. The preparation method includes: surface modification of the nanoparticles; gradient dispersion using a combination of ultrasonic and three-roll milling; electrostatic spraying; and a multi-stage stepped curing process. The coating exhibits an arc erosion time ≥0.5 seconds, a volume resistivity ≥1×10¹⁶ Ω·cm, adhesion ≥15MPa, and a glass transition temperature ≥165℃ under 550kV / 63kA conditions. It also demonstrates excellent resistance to thermal shock and damp heat aging, making it suitable for insulation protection of 550kV and above gas-insulated switchgear and effectively replacing similar imported products.

The application discloses an inlaid biodegradable polyurethane / lignin composite material and a preparation method and application thereof. The preparation method of the inlaid biodegradable polyurethane / lignin composite material comprises the following steps: (1) obtaining NCO-terminated polyurethane prepolymer by taking polycaprolactone, polycarbonate diol and polyisocyanate as raw materials; (2) mixing and stirring lignin with the NCO-terminated polyurethane prepolymer under a solvent-free condition; (3) adding glycerol or 1,4-butanediol into the system to perform a chain extension reaction, so as to obtain a chain-extended product; and (4) vulcanizing the chain-extended product to obtain the inlaid biodegradable polyurethane / lignin composite material. The application provides application of the composite material in preparation of an armored track shock-absorbing block. The polyurethane / lignin composite material prepared by the application has high strength, low compression permanent deformation and biodegradability and the like, and can improve the bearing capacity and durability of the armored track as a whole.

The application provides a thermosetting resin composition, a resin adhesive film and application thereof. The thermosetting resin composition comprises the following components in parts by mass: 5-95 parts of a benzocyclobutene resin, 5-95 parts of a component containing a C=C unsaturated bond, 5-300 parts of a modified filler, and 0.1-10 parts of an initiator. The modified filler is an inorganic filler treated on the surface by using an unsaturated group-containing coupling agent, wherein the unsaturated group is selected from any one or a combination of at least two of a styryl group, an acryloxy group, a methacryloxy group and a polybutadiene group. The resin adhesive film prepared from the thermosetting resin composition has excellent dielectric properties, low dielectric loss tangent Df, good dielectric stability, small change range of △Df (10 GHz) after HAST, high chemical copper bonding capacity, and can fully meet the performance requirements of high-frequency high-speed printed circuit boards prepared by a semi-additive method or an additive method.

The embodiment of the present application discloses a modified polyacrylate, a preparation method thereof, a glue solution, a glue and a UV adhesion-reducing scribing film, and a structural formula of the modified polyacrylate is as follows: wherein R1, R2 and R3 are independently any one of -H, an alkyl group, an aryl group, an ether group and a cyano group, R4 is an alkyl group, R5 is an organic group with an acrylate group and a carbon atom number of 2-26, R6, R7, R8, R9 and R10 are independently -H or a methyl group, X is O or N, and a, b, c, d and e are all integers greater than 0. 10 The embodiment of the present application introduces a high-reactivity photosensitive group (an acrylate group) into the polyacrylate, so that the light curing reaction efficiency of the polyacrylate is improved, the crosslinking density of the network structure formed by the UV curing of the polyacrylate is improved, and the adhesion-reducing effect of the generated UV adhesion-reducing scribing film is improved.