63 results about "Dimethylethanolamine" patented technology

The invention discloses an antistatic polyester fiber and a preparation method thereof, and relates to the field of fibers. When the antistatic polyester fiber is prepared, N, N-dimethylethanolamine reacts with allyl chloride, and then dichloro phthalocyanine silicon is grafted to obtain modified silicon phthalocyanine; polymerizing terephthalic acid, itaconic acid and ethylene glycol, and reacting with fluorescein isothiocyanate and modified silicon phthalocyanine in sequence to obtain modified polyester chips; the preparation method comprises the following steps: reacting phosphonitrilic chloride trimer with 3-hydroxy-5-nitropyridazine, and reducing to obtain a flame retardant; and carrying out melt spinning on the modified polyester chips and a flame retardant, and reacting to obtain the antistatic polyester fiber. The antistatic polyester fiber prepared by the invention has excellent antistatic property, antibacterial property, flame retardance and mechanical property.

The invention discloses a high-performance film for an automobile touch screen and a preparation method of the high-performance film, and relates to the technical field of touch screen films. According to the preparation method, 3-chloropropyltriethoxysilane reacts with N, N-dimethylethanolamine, quaternary ammonium salt groups are introduced to nano silicon dioxide particles, the nano silicon dioxide particles are endowed with antistatic and antibacterial activity, then through polycondensation and hydrolysis reaction of vinyltriethoxysilane, the dispersity and compatibility of the nano silicon dioxide particles in a polymer are improved, the mechanical strength of a coating is enhanced, agglomeration is avoided, and the anti-static and antibacterial properties of the coating are improved. Meanwhile, constructing a photo-crosslinking network by using polyethylene glycol diacrylate; the copolymer contains fluorine, hindered amine and other groups, and forms another network through the cross-linking agent to provide an anchoring frame for functional groups, so that the coating realizes long-acting synergy of antistatic, anti-ultraviolet, anti-fingerprint and other functions in an automobile environment.

The invention relates to a glass fiber reinforced polyurethane composite door and window profile formed by adopting an injection, impregnation and pultrusion process and a processing process and application thereof, belongs to the technical field of composite materials, and can be applied to the building field, such as door and window preparation. According to the scheme, the polyurethane material comprises a component A and a component B, the injection mass ratio of the component A to the component B is 100: (60-100), the component A comprises liquefied MDI, and the component B comprises 100 parts of flame-retardant polyether polyol, 2-10 parts of 1, 4-butanediol, 2-10 parts of calcium oxide, 0.3-0.5 part of dimethylethanolamine, 0.5-0.8 part of azodiisobutyronitrile, 0.5-1.5 parts of trimethylsiloxy silicate and 0.1-0.5 part of an organic silicon defoaming agent. The water content of the component B is controlled to be not higher than 0.05 wt%. According to the machining process, the glass fiber traction speed can be increased, meanwhile, the influence of bubble generation is reduced, the problem of heat stress concentration of a profile product is solved, and in addition, the shear strength performance of the profile in the vertical direction is improved.

This invention relates to the field of polymer materials, and specifically discloses a waterborne polyurethane, its neutralization preparation method, and its applications. This waterborne polyurethane is prepared by mixing the following raw materials in parts by weight: 10-30 parts by weight of a polyurethane prepolymer containing carboxyl functional groups, 5-25 parts by weight of a polyurethane prepolymer containing amino functional groups, 0.6-2.0 parts by weight of an organic amine chain extender, and 50-80 parts by weight of deionized water; wherein the polyurethane solid content accounts for 20-50% of the total weight of the raw materials. The preparation process of this invention is simple, the product is stable during storage, and it does not contain volatile or migrating amine neutralizing agents such as triethylamine or dimethylethanolamine, thus meeting the stringent regulatory requirements for applications such as food contact materials.

This invention discloses a method for preparing and applying a solid-supported eutectic solvent material. The specific preparation process involves: firstly, chemically bonding a hydrogen bond acceptor derivative, N,N-dimethylethanolamine, onto the surface of a chloromethyl polystyrene resin support to generate a hydrogen bond acceptor structure in situ; then, thoroughly mixing this structure with a corresponding hydrogen bond donor, urea, to finally obtain the chloromethyl polystyrene resin-supported eutectic solvent material. The solid-supported eutectic solvent material provided by this invention combines the advantages of eutectic solvents and solid supports, overcoming the drawbacks of eutectic solvents such as easy loss during use, large dosage, and poor physical stability. It features a simple synthesis method, fast adsorption rate, and large adsorption capacity, and can be used for the efficient adsorption and removal of indomethacin sodium from water.

The invention relates to an acrylic acid-organic silicon dual-modified polyester aqueous dispersion, which is prepared from the following components in percentage by weight: 1 to 5 parts of hexahydrophthalic anhydride, 10 to 15 parts of isophthalic acid, 1 to 5 parts of adipic acid, 15 to 20 parts of neopentyl glycol, 0.5 to 1 part of unsaturated binary acid, 1 to 2 parts of reflux solvent, 5 to 10 parts of acrylate mixed monomer, 0.5 to 1 part of acrylic acid, 5 to 10 parts of cosolvent, 1 to 5 parts of organic silicon modifier, 0.5 to 5 parts of dimethylethanolamine neutralizer and 40 to 45 parts of deionized water. The acrylic acid and the organic silicon are used for modifying the polyester at the same time, the weather resistance, the hydrolysis resistance and the adhesive force are remarkably improved while the high flexibility of the water-based polyester is kept, the synthesized water-based polyester dispersion can be used for preparing high-performance water-based coil steel coating or coil aluminum coating or other water-based amino coating with VOC smaller than or equal to 100 g / L, and good comprehensive performance is achieved.

The application discloses a modified polyurethane water-based functional coating and a preparation process thereof, and belongs to the technical field of water-based functional coatings. In the application, N,N-dimethylethanolamine is used as a blocking agent to block the isocyanate prepolymer, so that a latent type blocked isocyanate water-based polyurethane emulsion is prepared; lactide monomers, epoxy group grafted modified nano silicon dioxide and amino functionalized light stabilizer microcapsules are added into the emulsion; curing is carried out by using a two-stage process, that is, after preheating and water removal and film formation, 130-150 DEG C baking is carried out to trigger the deblocking of the DMEA blocked isocyanate, and the tertiary amine groups in the deblocked DMEA molecules immediately initiate the ring-opening polymerization of the premixed lactide monomers in the system in situ to generate polylactic acid segments which are chemically grafted to the crosslinked network. The application realizes the synchronous linkage of crosslinking and curing and polymer toughening, and the obtained coating has the characteristics of high crosslinking density, excellent flexibility and low internal stress.

This invention discloses an electronic potting compound for encapsulating new energy power systems and its preparation method, belonging to the field of adhesive preparation technology. The electronic potting compound for encapsulating new energy power systems consists of component A and component B. Component A includes polypropylene glycol, dicyclohexylmethane diisocyanate, hydroxyl-terminated polydimethylsiloxane, bismuth-zinc composite catalyst, N,N-dimethylethanolamine, porous alumina supported filler, composite halogen-free flame retardant, thixotropic agent, defoamer, and surface-modified calcium sulfate whisker fibers. Component B includes polypropylene glycol and dicyclohexylmethane diisocyanate. The electronic potting compound prepared by this invention exhibits good thermal conductivity and electromagnetic shielding capabilities after curing, while also possessing high mechanical strength.

A composition for carbon dioxide (CO2) capture includes 2-aminocyclohexanol, cis-1,2-diaminocyclohexane, meglumine, or combinations thereof. A process of CO2 capture includes mixing a CO2-containing gas with the composition. A system includes a component for receiving a gas and the composition, which absorbs CO2 from the gas. A further composition includes a first amine solvent selected from 2-aminocyclohexanol, cis-1,2-diaminocyclohexane, and meglumine and a second amine solvent independently selected from 2-aminocyclohexanol, cis-1,2-diaminocyclohexane, meglumine, ethyl diethanolamine, dimethylethanolamine, piperidine, 2-amino-2-methyl-1-propanol, and monoethanolamine. A further process includes reacting CO2 with an amine selected from 2-aminocyclohexanol, cis-1,2-diaminocyclohexane, and meglumine.

The presently claimed invention relates to an alkaline composition for cleaning a substrate comprising i) copper or copper alloy and ii) cobalt or cobalt alloy, the composition comprising: a) at least one pH adjustor selected from diglycolamine, 4,4-diethoxy-N,N-dimethyl-1-butanamine, 3-dimethylaminopropan-1-ol, dimethylaminoethoxyethanol, N,N-dimethylisopropanolamine, ethylethanolamine, N-methyldiethanolamine, 2-(2-(methylamino)ethoxy)ethanol, 3-(methylamino)propane-1,2-diol, 2-[2-[2-(2-methoxy- ethoxy)ethoxy]ethoxy]ethylamine, 2-[2-(2-aminoethoxy)-ethoxy]-ethanol, N-butyldiethanolamine, diisopropanolamine, N-methyldiisopropanolamine, monoethanolamine, 3-dimethylamino-1,2-propandiol, 2- amino-1-butanol, 2-(2-(2-(2-aminoethoxy)ethoxy)ethoxy)ethanol, prolinol, 1-methyl-2-pyrrolidinemethanol, 1-methyl-2-pyrrolidinemethanol, 1-methyl-3-pyrrolidinol, 2-amino-2-methyl-1-propanol, N,N-dimethylethanolamine, butylethanolamine, diethylethanolamine, 3-methoxypropylamine, 4-(2-hydroxyethyl)morpholine, 4-(dimethylamino)cyclohexanol, 2-amino-2-methyl-1, 3-propanediol, or diisopropylamine; b) at least one complexing agent selected from C2 to C12 hydrocarbon having at least two sulfonic acid or carboxylic acid groups; c) at least one polymeric dispersing agent having a weight average molecular weight ≥ 1000 g / mol; and d) a solvent comprising water.

The invention discloses a cross-linking agent and a preparation method of a high-durability antistatic spandex fabric, and the cross-linking agent is prepared by fully dissolving 20-30 parts of 4, 4 '-diphenylmethane diisocyanate in 200 parts of an organic solvent, adding 1-2 parts of dimethylethanolamine, and uniformly mixing. According to the high-durability antistatic spandex fabric, the spandex fabric passes through a padding machine containing a compression roller groove containing the cross-linking agent at the speed of 20-40 m / min, and the roller pressure is adjusted so that the liquid carrying rate of the spandex fabric can be 60%-80%; the spandex fabric subjected to padding treatment is fed into a continuous drying machine for partitioned drying, the linear speed of the spandex fabric in the continuous drying machine is controlled to range from 30 m / min to 50 m / min, and the standing time ranges from 2 min to 3 min; sequentially carrying out water washing and alcohol washing on the dried spandex fabric, carrying out low-temperature drying under the condition of 50-80 DEG C, and carrying out sizing and rolling to obtain the spandex fabric. According to the scheme, the problems of discontinuous antistatic property and poor antistatic durability of the spandex fabric in a stretching state can be solved.

The invention discloses an epoxy resin flame retardant as well as a preparation method and application thereof, and relates to the field of chemical synthesis. The chemical structural formula of the epoxy resin flame retardant is shown as a formula I and a formula II: # imgabs0. The preparation method of the epoxy resin flame retardant comprises the following steps: synthesizing a quaternary ammonium salt intermediate and synthesizing the flame retardant. N, N-dimethylethanolamine, benzyl bromide and phenylphosphonic dichloride are used as raw materials for two-step synthesis of the phosphate gemini quaternary ammonium salt type epoxy resin flame retardant, a quaternary ammonium salt structure is introduced to phosphate, the suffocation effect of phosphate in a gas phase is compensated, organic phosphorus-nitrogen free radicals can fully play a role in capturing free radicals during combustion, and the flame retardant property of the flame retardant is improved. Meanwhile, the phosphorus component takes epoxy resin as a carbon source to effectively form carbon, and the oxidation stability of Br <-> further improves the safety guarantee of the epoxy resin.

The invention discloses a liquid-liquid phase change absorbent for capturing carbon dioxide, and belongs to the technical field of carbon capture, the absorbent comprises an absorption component and a solvent component, the absorption component comprises N, N-dimethylethanolamine and 2-methylaminoethanol, the solvent component comprises triethylene glycol monobutyl ether and water, and the solvent component comprises a solvent component and a solvent component. The phase change absorbent is a homogeneous solution before absorbing CO2 and is divided into an upper liquid phase and a lower liquid phase after absorbing CO2 to be saturated, and CO2 is enriched in a lower water phase. According to the absorbent, the volume of a rich phase needing to be regenerated is greatly reduced through phase separation, and the energy consumption in the regeneration process can be effectively reduced, so that the defects of a traditional organic amine absorption method are effectively overcome. In addition, the method has the advantages of high absorption load, high absorption rate, short phase splitting time, high CO2 enrichment degree, high regeneration efficiency, low regeneration energy consumption, low saturated solution viscosity and the like, and has a wide industrial application prospect.

The invention relates to a medical self-shedding water-based light-cured pressure-sensitive adhesive. The pressure-sensitive adhesive is prepared from the following raw material components: water-based light-cured polyurethane, a photoinitiator, a neutralizer, a reactive diluent and water, the neutralizing agent is one or more of dimethylethanolamine, triethylamine, triethanolamine and ammonia water; the active diluent is one or more of acryloyl morpholine, hydroxyethyl acrylate, hydroxyethyl methylacrylate, hydroxypropyl acrylate, hydroxybutyl acrylate, polyethylene glycol 400 dimethacrylate and polyethylene glycol 600 dimethacrylate; the initiator is a mixture of an initiator and a solvent; the water-based light-cured polyurethane is prepared from the following raw material components: diisocyanate, self-made polyol, a catalyst 1, a polymerization inhibitor and an end-capping reagent. According to the medical self-shedding water-based photocuring pressure-sensitive adhesive and the preparation method thereof, the pressure-sensitive adhesive has good initial viscosity, and after the pressure-sensitive adhesive is pasted on an affected part for a period of time, the initial viscosity and the holding power can be weakened until basically disappear, and the pressure-sensitive adhesive is easy to shed from skin without damaging the skin.

The invention discloses rubber modified emulsified asphalt as well as a preparation method and application thereof. The rubber modified emulsified asphalt comprises latex, petroleum asphalt, an ammonium salt emulsifier and a nonionic emulsifier, wherein the ammonium salt emulsifier is obtained by reacting vegetable oleic acid with N, N-dimethylethanolamine. The rubber modified emulsified asphalt disclosed by the invention can be used as a main raw material of a waterproof coating for buildings and roads and bridges, can improve the tensile strength, elongation at break, low-temperature flexibility, bonding strength, tear strength and other properties of the waterproof coating, can reduce the comprehensive cost, and can also be directly used as the waterproof coating for buildings and roads and bridges.

The invention discloses an efficient preparation method of tetracaine, which comprises the following steps: 1, reacting para aminobenzoic acid, 1-bromobutane and triethylamine, concentrating under reduced pressure, adding an organic solvent and water, performing hot extraction and liquid separation, cooling an organic phase to separate out a solid, adding an acidic aqueous solution, cooling to crystallize, filtering and drying to obtain 4-butyl aminobenzoic acid butyl ester; 2, 4-butylaminobenzoic acid butyl ester, water, alcohol and sodium hydroxide are subjected to a reaction; decompressing and concentrating to remove the solvent, adding water for dissolving, acidifying with hydrochloric acid to separate out a solid, filtering and drying to obtain 4-butylaminobenzoic acid; 3, 4-butylaminobenzoic acid, N, N-dimethylethanolamine, a condensing agent or a hydroxyl activating agent and a reaction organic solvent react; adding an alkaline aqueous solution for washing and liquid separation, carrying out vacuum concentration on an organic phase, adding a refining solvent into a concentrate, heating, adsorbing with activated carbon, cooling for crystallization, filtering and drying to obtain a tetracaine finished product; the reaction temperature can be reduced, and the energy consumption is low; and the obtained product has high purity and high yield.

The present disclosure relates to the use of a strongly basic anion exchange resin, in the form of dimethylethanolamine (DMAE) resin, for the removal of the per- and polyfluoroalkyl substances (PFASs) from fluids such as water.

The invention relates to the technical field of antirust agents, in particular to a water-based acrylic resin-based rotor antirust agent and a processing method thereof. The water-based acrylic resin-based rotor antirust agent is prepared from the following raw materials in parts by weight: 50 to 60 parts of modified acrylic resin, 10 to 20 parts of deionized water, 0.1 to 0.2 part of dimethylethanolamine, 4 to 6 parts of barium sulfate, 10 to 15 parts of mica iron oxide, 0.1 to 0.3 part of dispersing agent, 0.1 to 0.2 part of defoaming agent, 0.1 to 0.3 part of flatting agent and 1 to 3 parts of coalescing agent. The antirust agent A and the antirust agent B are combined in the water-based acrylic resin to play a synergistic role, so that the water-based acrylic resin-based rotor antirust agent with excellent antirust property and adhesive force is prepared, and meanwhile, the water-based acrylic resin-based rotor antirust agent has excellent corrosion resistance and hydrophobicity.

The invention discloses an electronic pouring sealant for packaging a new energy power system and a preparation method of the electronic pouring sealant, and belongs to the technical field of adhesive preparation. The invention relates to an electronic pouring sealant for packaging a new energy power system, which is composed of a component A and a component B. The component A comprises the following raw materials: polypropylene glycol, dicyclohexylmethane diisocyanate, hydroxyl-terminated polydimethylsiloxane, a bismuth-zinc composite catalyst and N, N-dimethylformamide. The flame retardant is prepared from N, N-dimethylethanolamine, porous aluminum oxide loaded filler, a composite halogen-free flame retardant, a thixotropic agent, a defoaming agent and surface-modified calcium sulfate whisker fibers. The component B is prepared from the following raw materials: polypropylene glycol and dicyclohexylmethane diisocyanate. The prepared electronic pouring sealant has good heat conduction capability and electromagnetic shielding capability after being cured, and also has relatively high mechanical strength.

The invention discloses an epoxy modified polyurethane coating and a preparation method thereof, and belongs to the technical field of coatings. The preparation method of the epoxy modified polyurethane coating comprises the following steps: mixing epoxidized oil, deionized water and 2-methyl-2-propanol, heating and refluxing at 50-70 DEG C for 20-40 minutes, then adding phosphoric acid, reacting at 80-100 DEG C for 5-7 hours, dissolving the product in ethyl acetate, separating out an organic layer, washing and drying to obtain phosphorus-containing polyol; the preparation method comprises the following steps: mixing phosphorus-containing polyol, isocyanate and 1, 6-hexanediol, introducing inert gas, stirring at 60-80 DEG C for 3-4 hours, adding a diluent, and cooling to room temperature to obtain a prepolymer; and adding N, N-dimethylethanolamine into the prepolymer, stirring for 20-40 minutes, then adding epoxy silane modified cellulose nanocrystals, then adding deionized water, stirring, and removing the diluent in vacuum to obtain the epoxy modified polyurethane coating with the solid content of 20-40 wt%. And the coating has good water resistance, corrosion resistance and mechanical properties, so that the barrier property of the coating is improved, and the corrosion resistance is greatly improved.

The invention discloses a water-resistant and wear-resistant wood coating and a preparation method thereof. Comprising the following steps: 1, mixing methyl methacrylate, styrene, butyl acrylate, 2-ethylhexyl acrylate, acrylic acid, acrylamide and a modified filler, and stirring until complete dissolution to obtain a mixture A; 2-butoxyethanol and benzoyl peroxide are mixed and stirred uniformly, and a mixture B is obtained; and 2, raising the temperature of the mixture A, dropwise adding the mixture B at a constant speed, continuously reacting for 2-3 hours after dropwise adding, cooling to room temperature after the reaction is completed, adjusting the pH value by using N, N-dimethylethanolamine, and adding deionized water to obtain the wood coating. The preparation method has the beneficial effects that monomers such as methyl methacrylate and styrene are copolymerized with the modified filler to prepare the coating; wherein Mo2Ti2AlC3 powder is adopted as the modified filler and subjected to etching, amination and modification treatment, and the performance of the coating is remarkably improved.

The invention relates to a production method of N, N-dimethylethanolamine, and belongs to the technical field of organic compound preparation. The problems of high energy consumption, low product yield, more impurities and the like of the preparation method of N, N-dimethylethanolamine in the prior art are solved. According to the production method disclosed by the invention, the compound ionic liquid is used as a catalyst to catalyze the reaction of ethylene oxide and dimethylamine to obtain N, N-dimethylethanolamine. According to the production method, the composite ionic liquid is adopted as the catalyst, so that the production energy consumption is reduced, the EO conversion rate and the DMEA selectivity are obviously improved, the product has few impurities and high purity which is not less than 99.98%, the problems that the catalyst is not easy to recycle and separate and the like are solved, and a good effect is achieved.

The present invention relates to a reactor for the production of dimethylethanolamine and its production method, belonging to the field of chemical production equipment, including a tank body, a tank cover, catalyst tubes, a piston sleeve, a contact rod and a contact head. The tank cover is erected on the top of the tank body, and gaseous ethylene oxide and liquid dimethylamine flowing are introduced into the tank body. A number of catalyst tubes filled with granular catalysts are fixedly connected inside the tank body. A flexible piston sleeve is fixedly connected to the bottom of the tank cover. Colored water and pressurized nitrogen are filled between the piston sleeve and the tank cover. The contact rod is erected on the top of the piston sleeve, and two contact heads are fixedly connected to the top of the tank cover at intervals. The piston sleeve rises to make the contact rod contact the contact heads and make an electric signal connected between the contact heads. The present invention has the advantages of effectively inhibiting the reaction of ethylene oxide with water and improving the product yield.

The invention relates to the technical field of pavement materials, in particular to an ultraviolet light curing asphalt pavement cold patch material which is composed of cold patch liquid and aggregate, the mass ratio of the cold patch liquid to the aggregate is (4-6): 100, the cold patch liquid comprises decolorized asphalt and an ultraviolet light curing resin system, and the ultraviolet light curing resin system comprises a curing agent and a curing agent. The mass ratio of the decolorized asphalt to the ultraviolet curing resin system is 100: (10-30), and the ultraviolet curing resin system is prepared from the following components in parts by mass: 50 to 70 parts of epoxy acrylate resin, 20 to 40 parts of tripropylene glycol diacrylate, 2 to 5 parts of 2, 4, 6-trimethylbenzoyl-diphenyl phosphine oxide and 0.5 to 1 part of dimethylethanolamine. The problems that a traditional cold patch material is long in curing time and slow in strength forming are solved, a specific ultraviolet curing resin system and decolorized asphalt are adopted, rapid curing is conducted under the illumination condition, high strength is provided for pavement pit slot repairing, vehicle loads can be effectively borne, the durability of a repaired pavement is enhanced, and the requirement for rapid traffic opening is met.

The present disclosure provides a hydroxyl acrylic resin dispersion for waterborne paints, a preparation method thereof, and a waterborne paint, belonging to the technical field of waterborne acrylic resins. The hydroxyl acrylic resin dispersion for waterborne paints includes: 2-3 parts by mass of styrene; 7-8 parts by mass of methyl methacrylate; 23-24 parts by mass of isobutyl methacrylate; 2-3 parts by mass of hydroxypropyl methacrylate; 7-8 parts by mass of hydroxyethyl methacrylate; 0.5-1 part by mass of acrylic acid; 0.1-0.5 part by mass of diacetone acrylamide; 0.5-1.5 parts by mass of ethylene glycol dimethacrylate; 2-3 parts by mass of tert-butyl peroxy (2-ethylhexanoate); 2-3 parts by mass of diethylene glycol methyl ether; 1-2 parts by mass of N,N-dimethylethanolamine; 45-55 parts by mass of deionized water. By using the dispersion in combination with an isocyanate crosslinking agent, the application effect of an oil-based paint can be achieved, and at the same time, it also has good water resistance and acid and alkali resistance.

The invention discloses a two-component self-emulsifying polyester acrylic dispersion and a preparation method thereof, and relates to the field of waterborne polyurethane paints.The preparation method comprises the following steps that a half ester intermediate is prepared and reacts with ethylene carbonate, and a hydrophilic monomer with cyclic carbonate groups is obtained; dibasic acid and dihydric alcohol are subjected to polycondensation to obtain initial resin, propylene glycol monomethyl ether, a mixed solution a containing hydrophilic monomers and a mixed solution b are added into the initial resin at intervals, mixing is conducted, and functional resin is obtained; the functional resin and dimethylethanolamine are subjected to a stirring reaction, then deionized water is added, mixing is conducted, and a product with the D50 being 50-150 nm and the PDIlt is obtained; and 0.2 of a two-component self-emulsifying polyester acrylic acid dispersion. According to the preparation method disclosed by the invention, the hydrophilic monomer with a cyclic carbonate group is introduced during preparation, and a step-by-step controlled polycondensation and graft polymerization process is adopted, so that the hydrophilic monomer is directionally and uniformly anchored on a polyester main chain, and the problem of non-uniform molecular structure caused by random copolymerization of the hydrophilic monomer in a traditional method is avoided.

The invention provides a molding foaming composition and a foaming process, and relates to the technical field of plastics. The molding foaming composition is prepared from a component A and a component B, the component A is prepared from the following components in parts by weight: 75 to 85 parts of polyether polyol, 15 to 30 parts of polymer polyol, 0.5 to 1.5 parts of diethanol amine, 1 to 3 parts of silicone oil, 0.1 to 0.5 part of triethylene diamine, 0.2 to 0.8 part of dimethylethanolamine, 0.1 to 1 part of triblock copolymer-organic montmorillonite and 2 to 6 parts of water, and the component B is isocyanate. The molding foaming composition has the advantages of high rebound resilience, short production period and capability of completing foaming in a short time, a large number of molds can be saved, and the production cost is reduced.

The invention discloses a water-based Teflon non-stick coating and a preparation method thereof, and belongs to the technical field of coatings, the water-based Teflon non-stick coating comprises the following raw materials by weight: 1.5-2% of a thickener, 0.8-1.3% of dimethylethanolamine, 2.5-4.2% of pearl powder, 3-5% of an adhesion promoter, 25.3-31.3% of deionized water, 1-2% of carbon black, 0.4-1.2% of a wetting agent, 0.5-1% of a leveling agent, 1.8-2.3% of wear-resistant powder, and 1-5% of a hardening agent. The balance is polytetrafluoroethylene emulsion. Through the mode, the prepared water-based Teflon single-layer non-stick coating does not need to be sprayed for the second time, the coating has high abrasion resistance, meanwhile, the surface of the coating is good in anti-adhesion performance, and the adhesive force between the coating and the surface of a base body is high.

The invention discloses waterborne epoxy resin and a preparation method thereof, and belongs to the technical field of paints.The preparation method comprises the steps that hydroxyl-terminated polybutadiene and trimellitic anhydride are subjected to a reaction at the temperature of 165-170 DEG C, and an intermediate product M1 is obtained; reacting the intermediate product M1, epoxy resin, ethylene glycol butyl ether, triphenylphosphine and an organic solvent at the temperature of 110-120 DEG C to obtain an intermediate product M2; carrying out a neutralization reaction on the intermediate product M2 and N, N-dimethylethanolamine at the temperature of 85-95 DEG C to obtain an intermediate product M3; and mixing the intermediate product M3 with deionized water to obtain the waterborne epoxy resin. The hydroxyl-terminated polybutadiene with excellent water resistance, acid and alkali resistance, corrosion resistance, insulativity, flexibility and the like is grafted to the epoxy resin through design to prepare the water-borne epoxy resin; the water-based epoxy resin can be applied to water-based self-drying industrial anti-corrosion paint, and has the characteristics of wide universality, room-temperature self-drying, good salt spray resistance, good acid and alkali resistance, good water resistance and the like.

The invention relates to the technical field of water-based paint preparation, and discloses a method for preparing high-weather-resistance solvent-free polyurethane from polycarbonate diol. The water-based paint is prepared from BF-8021 water-based ultrafast-drying anticorrosive resin, BF-9011 acrylic dispersion, a dispersing agent special for carbon black, carbon black, light calcium carbonate, barium sulfate, dimethylethanolamine, propylene glycol monomethyl ether, a defoaming agent, an anti-settling agent special for water-based paint, a drier special for water-based paint, texanol and water. The coating prepared by the invention has ultrafast drying speed, the drying speed of paint film surface drying is 10 minutes, and the hard drying time is 40 minutes; the paint film does not rust or fall off after the neutral salt spray test is carried out for 200h; after the paint is artificially aged for 200 hours, the paint film does not have the phenomena of cracking, powdering, bubbling, falling and rusting, the color difference E is 2.9, the gloss loss rate after water washing is 28%, the gloss loss rate after polishing is 8%, and the requirements that the cast pipe paint does not rust, does not lose gloss, does not fall off and the like after being stored outdoors for 2 years are met.