277 results about "Single component" patented technology

The invention discloses a rare-earth metal arylamine group compound as well as preparation method and application thereof. The invention discloses the rare-earth metal arylamine group compound which is characterized in that a general formula of the rare-earth metal arylamine group compound is (2,6-R12PhNH)5LnLi2(THF)2, wherein Ln is a rear-earth metal selected from one of neodymium, samarium, ytterbium or yttrium; R1 is selected from one of hydrogen, methyl or isopropyl. The rare-earth metal arylamine group compound has the advantages that the rare-earth metal arylamine group compound has a definite structure; raw materials used in the preparation method are simple, easily obtained and cheap; the reaction process is simple and easily operated; the rare-earth metal arylamine group compound product is conveniently purified and the yield of the product is high; the rare-earth metal arylamine group compound has a high activity when acting as a single component catalyst to catalyze a hydrogen phosphine reaction of aldehyde or ketone and phosphite ester; the use amount of the catalyst is less; the yield is high; a substrate has wide universality; a new and simple method is provided for synthesis of a-hydroxyphosphonate.

The invention discloses a single-component high-heat-resistance type epoxy adhesive and a preparation method of the single-component high-heat-resistance type epoxy adhesive. The adhesive is prepared from the following components in parts by weight: 30 to 40 parts of N, N-4, 4 '-diphenylmethane bismaleimide; 50 parts of bisphenol F epoxy resin; 36.47 parts of 4, 4 '-diaminodiphenyl sulfone; 20 to 40 phr of phenyl glycidyl ether; 1 to 2 phr of two terminal type epoxy silicone oil; 4 to 6 phr of hydroxyl-terminated polyether sulfone; 10 to 20 phr of boron nitride, the surface of which is modified by gamma-glycidyl ether oxypropyl trimethoxy silane; and 1 to 3 phr of an adhesion promoter. According to the adhesive disclosed by the invention, the heat resistance, the mechanical property, the dimensional stability, the process adaptability and the like are synergistically improved, the use requirements of an aviation structural part on long-term service at 150-180 DEG C and an electronic packaging device on the condition of short-time reflow soldering at about 200 DEG C can be met, and the reliability of the adhesive in a high-temperature environment is remarkably improved.

To provide a liquid spray head that has a low environmental impact, is acid-resistant, and is highly reliable. [Solution] A liquid spray head that sprays liquid from a nozzle comprises a first member, a second member, and a cured product of a one-component adhesive that adheres the first member and the second member, wherein the one-component adhesive comprises a bisphenol-free epoxy resin, a curing agent containing an aromatic amine polymer, and an alkylphenol, wherein the alkylphenol is (a) an alkylphenol having at least one ethyl group, or (b) an alkylphenol having 1 to 3 carbon atoms in the alkyl group and at least one methyl group and one isopropyl group.

The invention discloses non-dispersible cement for underwater repair of concrete. The non-dispersible cement is prepared from the following raw materials in parts by weight: 30-50 parts of Portland cement clinker powder; 20-40 parts of functional grouting material dry powder; 15 to 30 parts of anti-dispersion reinforcing powder; 2-5 parts of a composite admixture; after the non-dispersible cement is mixed with water, the ratio of the underwater compressive strength of the formed underwater pouring slurry to the onshore standard curing compressive strength is not less than 0.7; therefore, the anti-dispersing agent is compounded with the carrier in advance to prepare stable powder, and the problems that the anti-dispersing agent is prone to caking on site and uneven in dispersion are solved. The single-component dry powder material can be used only by adding water and stirring, the construction is simple and convenient, and the dependence on the process and the cost is reduced while the excellent underwater anti-dispersion property and the early strength property are ensured.

A conductive epoxy composition is disclosed comprising an epoxy resin, a low-viscosity hydrocarbon diluent, silver, and graphene. The one-part formulation provides enhanced electrical conductivity, mechanical strength, and process stability. The epoxy resin may include resorcinol diglycidyl ether, diglycidyl ether of Bisphenol A, or Bisphenol F. The hydrocarbon diluent may include glycidyl-ether-family resins having defined carbon-chain characteristics and molecular weights. Silver may be present in particulate, flake, nanoparticle, or coated forms at about 55-90 wt. %, while graphene may be present at 0.03-0.3 wt. % with dimensions of 1-10 μm and surface areas of 400-2,000 m2 / g. Optional additives include solvents, ionic liquids, latent curing agents, and strength enhancers to optimize curing and adhesion.

The invention relates to the technical field of waterproof coatings, and particularly discloses a superelastic single-component bio-based polyurethane waterproof coating with high bio-based content and a preparation method of the superelastic single-component bio-based polyurethane waterproof coating. The invention relates to a hyperelastic single-component bio-based polyurethane waterproof coating with high bio-based content. The waterproof coating comprises the following raw materials in parts by weight: 50-60 parts of bifunctional bio-based polyol, 3-8 parts of a bio-based chain extender, 20-35 parts of a bio-based plasticizer, 10-15 parts of isocyanate and 2-4 parts of a latent curing agent. The bio-based polyurethane waterproof coating provided by the invention adopts a single-component design, is ready to use after a barrel is opened, and is simple and convenient to construct; performing moisture curing at room temperature to form a seamless elastic coating film; the coating has excellent low-temperature flexibility, adhesive force, water resistance and aging resistance, all the components are clear in function, the synergistic effect mechanism is clear, the preparation process is simple, and industrial production is easy.

The invention relates to the technical field of high polymer materials, in particular to a single-component polyurethane grouting reinforcement material as well as a preparation method and application thereof. According to the reinforcement material, polymethylene polyphenyl polyisocyanate, epoxy resin, low-functionality polyether polyol, high-functionality polyether polyol and polyester polyol are mainly used as raw materials, the adding proportion of all the raw materials is adjusted in a targeted mode, and the prepared single-component polyurethane grouting reinforcement material permeates into a permafrost region roadbed structure; the permeable material-soil stone body formed by chemical reaction with roadbed moisture has the properties of high strength and toughness, good freeze-thaw resistance, good dry-wet cycle property and low heat release. According to the formula system, the contradiction between high strength and low heat release in the traditional technology is successfully solved through the fine matching and synergistic effect of all the components, and an unexpected technical effect is achieved.

The invention discloses a sealing material suitable for pipeline filling and sealing in low-temperature areas and application of the sealing material, pipelines comprise PCCP pipes or PCCP-C pipes and the like, the sealing material comprises specially modified bio-based polyols and is used for preparing the sealing material suitable for pipeline sealing, and sealing modes comprise crack filling, surface coating and the like. The sealing material can be a double-component polyurethane sealant, a single-component polyurethane anticorrosive coating and the like, practice shows that when the sealing material is applied to the sealing material, the curing time can be shortened at relatively low humidity, meanwhile, the viscosity of the material body is slightly increased at low temperature, and the proper viscosity can still be kept; in addition, the mechanical property at low temperature is relatively good, and the low-temperature-resistant anti-corrosion pipe joint is suitable for regions with relatively long low-temperature time duration.

A durable composite anticorrosive coating for a concrete structure of a road in a cold region belongs to the technical field of building materials, and adopts the specific scheme that the composite anticorrosive coating comprises an inner coating and an outer coating, the inner coating is coated on a concrete base surface, the outer coating is coated on the inner coating, and the outer coating is coated on the outer coating. The inner coating is a single-component epoxy resin interface bonding layer, and the outer coating is a single-component MMA resin sand-containing anti-corrosion layer. Through the composite structure design of the epoxy resin interface bonding layer and the MMA resin sand-containing anti-corrosion layer, the advantages of high permeability and strong bonding characteristics of epoxy resin and the advantages of rapid curing, high wear resistance, wide temperature range (still keeping toughness at-40 DEG C) and good weather resistance of MMA resin are fully played, and the efficient and lasting protection effect is achieved.

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 invention relates to a two-part dental sealant, a method of application with a syringe device, and a kit. Specifically, the present invention provides a method of administering a two-part dental sealant, the method comprising providing a syringe device (1) comprising a cartridge (10) comprising a first chamber and a second chamber. The first chamber comprises a first portion of a dental sealant comprising a (meth) acrylate resin and an oxidation curing agent. The second chamber comprises a second portion of the dental sealant comprising a (meth) acrylate resin and a reducing curing agent that reacts with the oxidizing curing agent of the first chamber. The first portion and / or the second portion of the dental sealant further comprise a single component or components that neutralize acids and promote remineralization. The syringe device comprises a dispensing nozzle (17) comprising a static mixer and an outlet at one end of the cartridge and a plunger (20) at the opposite end of the cartridge. A kit for storing and applying a dental sealant is also described.

The present invention is related to a laminate (1) for packaging applications, comprising a substrate layer (2) and an adhesive layer (5) present on a surface of said substrate layer (2), characterized in that said adhesive layer (5) is made from a one-component adhesive composition with an adhesive compound comprising a branched backbone structure and isocyanate moieties as functional groups. The present invention is furthermore related to an article, preferably, a flexible packing, comprising said laminate (1), and to a method for preparing said one-component adhesive composition.

The application belongs to the technical field of epoxy structural adhesive and discloses a single-component organic silicon modified temperature-resistant epoxy structural adhesive composition and a preparation method thereof, the single-component organic silicon modified temperature-resistant epoxy structural adhesive composition comprises, in terms of weight percentage, 40-75 parts of epoxy resin, 26-47 parts of epoxy modified silicon oil, 21-28 parts of methyl phenyl silicon resin containing an alkoxy functional group, 6-8 parts of a curing agent, 24-40 parts of amino phenyl silicon oil, 0-18 parts of a defoaming agent and 1-3 parts of a leveling agent, the side chain or end chain of the epoxy modified silicon oil contains at least one epoxy group, the amino equivalent of the amino phenyl silicon oil is 670-3750 g / eq, and the phenyl content is 0.10-0.40 mol / 100g. The application provides a single-component organic silicon modified temperature-resistant epoxy structural adhesive composition, the epoxy modified silicon oil and the amino phenyl silicon oil can produce a synergistic effect, the high-temperature resistance of the composition is improved, and thus the problems such as the decrease of adhesion, the failure of insulation performance after 90-degree bending and the decrease of tensile strength of the epoxy structural adhesive composition in an environment exceeding 100 DEG C can be avoided.

Disclosed are a lower jacking member, a wire withdrawal method based on the lower jacking member, and a squaring machine including the lower jacking member. The lower jacking member is used for axially fixing a bottom surface of an edge scrap formed by cutting a round rod, and a bottom outline of the edge scrap has a cutting edge. The lower jacking member includes at least two single components, and drive structures independently connected to the single components. A spacing between at least one of the single components and the cutting edge is different from a spacing between the rest of the single components and the cutting edge; and the drive structures are used for driving tops of the single components to abut against the bottom surface of the edge scrap.

The application relates to the technical field of paint, in particular to a single-component polyurethane paint and a preparation method thereof; the single-component polyurethane paint comprises the following components in parts by weight: 100 parts of polyether polyol, 40-45 parts of diphenylmethane diisocyanate, 25-30 parts of modified castor oil, 15-18 parts of reinforcing filler, 1.0-1.5 parts of light stabilizer and 0.1-0.2 parts of organic tin catalyst. The single-component polyurethane paint solves the problems that the reinforcing filler is prone to sedimentation and the storage stability is poor through the design of the modified castor oil and the optimization of the formula, the process flow is simple and easy to implement, the coating shows excellent adhesion, and the strict requirements for high-performance coating in many fields such as textile shoes and clothes, automobiles and buildings can be fully met.

The invention relates to a preparation method of a single-component epoxy electronic adhesive with low leveling property and low curing shrinkage. The epoxy electronic adhesive is prepared by ball-milling epoxy resin, a high-flexibility reactive flexibilizer, an auxiliary binder, a hydrophobic filler, a latent curing agent and a curing accelerator and then curing under temperature gradient. According to the method, the epoxy electronic glue with single-component stability, low leveling characteristic and low curing shrinkage rate can be prepared, and the performance requirements of high-density and miniaturized electronic packaging on precision, precision and fineness are met.

The application discloses a preparation method of a single-component water-oil mixed environment-friendly composite adhesive, and belongs to the technical field of composite special adhesives. The application combines water and oil in the composite adhesive under the premise that no emulsifier and dispersant is added, by grafting and polymerizing the adhesive with the water-based acrylic ester and monomer polymerization adhesive, so that the excellent characteristics of the oil-based adhesive and the water-based adhesive are organically combined. The composite adhesive has the safety, environmental protection and hygiene performance of the water-based adhesive, and overcomes the defects of the water-based adhesive, such as poor water resistance, slow setting and curing, and the like, and also has the functions of the solvent-based adhesive, such as fast setting, normal-temperature curing, water resistance, washing resistance and excellent initial adhesion effect, and overcomes the safety and environmental protection defects of the current composite adhesive industry.

This invention provides a hardness standard component with multiple hardness indicator areas, comprising a standard component base, multiple hardness sleeves, and multiple isolation rings. The standard component base includes an inner shaft, through which the multiple hardness sleeves pass. The isolation rings are sleeved on the inner shaft and used to separate adjacent hardness sleeves. The surface hardness of each hardness sleeve is different. This hardness standard component with multiple hardness indicator areas has the advantages of having multiple hardness indicator areas in a single component, being able to replace multiple hardness standard components, and being easier to apply to automated testing conditions.

This disclosure describes a one-component, low-gloss polyurethane powder coating composition comprising 90 to 100 wt% of a resin system comprising a thermoset resin, an isocyanate curing agent for reacting with the thermoset resin, and a polycarbonate diol, wherein: the thermoset resin comprises a first hydroxyl-functional polyester resin (i) having a hydroxyl value of between 200 and 250 mgKOH / g and a second hydroxyl-functional polyester resin (ii) having a hydroxyl value of between 20 and 40 mgKOH / g, the weight ratio of (i):(ii) ranging from 15:85 to 35:65, the isocyanate curing agent comprising at least one unblocked urethdione curing agent, the ratio of isocyanate groups of the curing agent to the hydroxyl group of the thermoset resin ranging from 0.8 to 1.2, and the total weight % of the The polycarbonate diol in the coating composition varies from 1 to 10% by weight,based on the total weight of the coating composition.

This invention discloses a single-component moisture-curing conductive and thermally conductive adhesive and its preparation process, comprising the following raw materials in parts by weight: 100 parts SMP adhesive; 15-30 parts flake silver powder; 500-900 parts spherical silver-coated copper powder; 0-400 parts dendritic silver-coated copper powder; 10-20 parts decamethyltetrasiloxane; 1-1.5 parts β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate isooctyl ester; 7.5-10 parts N-β-(aminoethyl)-γ-aminopropyltrimethoxysilane; and 1-1.5 parts vinyltrimethoxysilane. This invention allows the adhesive to cure at room temperature / low temperature using moisture in the air, eliminating the need for temperatures above 120°C. This completely avoids thermal stress damage to heat-sensitive substrates such as plastics, flexible circuit boards, and PET / PI films, making it perfectly suited for low-temperature processing scenarios such as flexible electronics manufacturing, wearable devices, and flexible sensors.

The present application relates to polyurethane coating technical field, specifically, it is a kind of solvent-free environment-friendly single-component polyurethane waterproof coating and its preparation method. According to mass fraction, the raw material of waterproof coating includes the following components: polyol 25-30 parts, plasticizer 10-15 parts, modified powder 52-56 parts, isocyanate 9-11 parts, chain extender 1-2 parts, catalyst 0.07-0.09 parts, defoaming agent 0.3-0.4 parts, anti-settling agent 0.2-0.3 parts;Among them, the modified powder is obtained by modifying the mixture of powder and rheological auxiliary agent by organosilane.The product solid content is more than 99.5%, environmental protection is high, viscosity is low, easy to construction, mechanical property is good, and after aging treatment, performance does not appear attenuation, and good aging resistance.The product is smooth after curing after construction on concrete, the film inside is dense and bubble-free, and the surface is free of shrinkage, which can achieve good waterproof effect.

An organic silicon resin toughening agent, a single-component high-strength epoxy structural adhesive, and the preparation method thereof. The organic silicon resin toughening agent is prepared by reacting epoxy modified hydrogen-containing silicone oil with vinyl six-membered cyclic oligomeric silsesquioxane; The epoxy modified hydrogen-containing silicone oil is prepared by reacting allyl alcohol glycidyl ether with dihydrogen-terminated hydrogen-containing silicone oil. The organic silicon resin toughening agent with a circular network structure unit synthesized by the present disclosure has better high and low temperature resistance compared to toughening agents such as nitrile rubber and core-shell structure rubber. While improving the toughness of single-component high-strength epoxy structural adhesive, it can significantly enhance the high and low temperature resistance of single-component high-strength epoxy structural adhesive.

The invention relates to the technical field of packaging materials for electrical components, and discloses a single-component epoxy adhesive for thermosensitive components, which comprises the following components: 5-25 parts by mass of flexible resin; 1-5 parts by mass of high-temperature-resistant resin; 30-50 parts by mass of epoxy resin; 0-5 parts by mass of a pigment; 0-3 parts by mass of an additive; 30-50 parts by mass of a filler; 0-3 parts by mass of a rheological aid; and 5-15 parts by mass of a curing agent. The invention also discloses a preparation and use method of the single-component epoxy adhesive. The adhesive provided by the invention is moderate in viscosity, and a formed adhesive cured product is high-temperature-resistant and high in insulating strength.

1. The name of the design product: packaging box (ProtYouth single pack). 2. The use of the design product: packaging box for single component collagen stock solution. 3. The design points of the design product: the combination of shape, pattern and color. 4. The picture or photo that best indicates the design points: design 1 perspective view. 5. The design for which protection is sought includes color. 6. Design 1 is designated as the basic design.

This invention provides an exposed single-component waterproof coating with self-healing function, its preparation method, and its application. The exposed single-component waterproof coating, based on a total weight percentage of 100 wt%, comprises: 25-50 wt% fluorocarbon emulsion, 5-20 wt% microcapsule self-healing agent, 0.1-1 wt% water-resistant agent, 0.1-3 wt% film-forming aid, 0.1-1 wt% stabilizer, 0.1-1 wt% bactericide and preservative, with the balance being water. The fluorocarbon emulsion is a core-shell polymer emulsion. The outer shell is formed by emulsion polymerization of fluorinated acrylate monomers, furan-structured monomers, and maleimide-structured monomers, while the core is formed by emulsion polymerization of soft acrylate monomers and hard acrylate monomers. The emulsion polymerization is carried out in an aqueous solution containing emulsifiers and initiators. The microcapsule self-healing agent has a core-shell structure, including a urea-formaldehyde resin shell and a fluorooil core material encapsulated within the urea-formaldehyde resin shell.

The utility model relates to the technical field of decorative wallboard, specifically disclose a kind of decorative wallboard with moisture-proof function, including substrate, the substrate is sequentially composite from inside to outside, vapour barrier: the continuous dense film formed by single-component polyurethane waterproof coating coated on the surface of substrate, thickness is set between 0.3-1mm, moisture-proof layer: by spraying on vapour barrier nanometer silicon dioxide waterproof coating is made of, thickness is set between 0.05-0.2mm, water absorption layer: set on moisture-proof layer, by filling with high water-absorbing resin and alginate fibre honeycomb composite water-absorbing material is made of, thickness is set between 5-8mm, the decorative wallboard, with multiple moisture-proof effect, vapour barrier blocks water vapor penetration, moisture-proof layer forms superhydrophobic barrier, water absorption layer actively absorbs and adjusts humidity, ventilation layer promotes air circulation and accelerates water vapor evaporation, each layer synergistic effect realizes efficient moisture-proof, significantly reduce decorative wallboard damp deformation and mildew risk, improve service life, strong practicality.

The invention relates to solvent-borne one-pack clearcoat material, characterized in that it comprises i.) one or more hydroxy functional polymers (A), at least one of which is a poly(meth)acrylate (A1), possessing a) a glass transition temperature below -15 °C as determined by differential scanning calorimetry; b) a hydroxyl value in the range from 130 mg KOH / g to 300 mg KOH / g; and c) a weight-average molecular weight determined by gel permeation chromatography using a polystyrene standard; ii.) one or more crosslinking agents (B), at least one of which is a melamine-formaldehyde resin possessing methoxymethyl groups (B1); and iii.) a catalyst system (C) comprising one or more amine-blocked sulfonic acids (C1); and one or more phosphoric acid catalysts (C2). The invention further related to a multilayer coating system comprising a clearcoat layer formed from said clearcoat material, a method of preparing such multilayer coating system and a thus coated substrate, as well as the use of the solvent-borne one-pack clearcoat material for coating uncoated or precoated substrates, preferably vehicle bodies or parts thereof in OEM or repair coating.

An one component (1K) composition comprising: a) thermally-expandable thermoplastic microspheres; b) at least one epoxide compound; c) at least one compound which provides at least two amine hydrogens reactive toward epoxide groups; and, d) at least one accelerator, wherein the composition is characterized by a molar ratio of epoxide-reactive groups to epoxide groups from 0.6:1 to 1.2:1, preferably from 0.95: 1 to 1.1:1. The present disclosure envisages the use of this one component (1K) composition in providing an adhesive within a bonded structure upon curing of said composition under conditions in which the constituent microspheres retain their capacity to thermally expand.

The invention relates to the technical field of adhesives, and discloses a normal-temperature processing high-stability single-component epoxy resin adhesive which comprises the following components in parts by mass (based on the total amount of all epoxy group-containing components being 100 parts): a, 70-90 parts of a polyepoxy compound; b, 10 to 30 parts of glycidyl acrylate or glycidyl methacrylate; c, 5 to 15 parts of an acrylic ester reactive diluent; and d, an epoxy resin latent curing agent and an accelerator: 8-10 parts of the curing agent and 2-6 parts of the accelerator. According to the high-stability single-component epoxy resin adhesive capable of being processed at normal temperature, through the low viscosity characteristics of the component b and the component c, a resin system can be stirred and ground at normal temperature without heating, the problem that a latent curing agent is activated in advance due to high temperature in a traditional process is solved, and a prepolymer prepared in the early stage is stable in viscosity and high in stability. The curing agent in the system is in a latent state, so that the storage periods of the adhesive and the prepreg are effectively prolonged, and gel failure is not easy to occur.

The invention provides a single-component polyurethane foam joint mixture which comprises the following raw materials: a white material, a black material and an aerosol propellant, the white material comprises the following components in percentage by weight: 20-40% of polyether polyol, 2-10% of a disulfide bond-containing hydroxyl compound, 2-10% of other hydroxyl and amino compounds, 35-60% of chlorinated paraffin, 1.5-5% of a foam stabilizer, 0.5-2% of a catalyst, 1-5% of an anti-ultraviolet antioxidant and 3-5% of a flame retardant; the black material is isocyanate and comprises PAPI or MDI; the aerosol propellant comprises a mixture of dimethyl ether and propane and butane. The invention further provides a preparation method of the single-component polyurethane foam joint mixture. The preparation method comprises the steps of white material preparation, filling and packaging, curing and the like. The material has excellent toughness and fatigue resistance, and meets the construction requirements of multiple scenes such as severe cold areas and indoor low temperature. The flame-retardant efficiency is remarkably improved, and no negative influence is generated on the foaming ratio, bonding strength and other core properties of foam.