42results about How to "Improve boiling water resistance" patented technology

The invention relates to a styrene modified polyvinyl acetate emulsion and a preparation method, and relates to the modified polyvinyl acetate emulsion and the preparation method. The styrene modified polyvinyl acetate emulsion comprises the following raw materials by weight: 58-62% of deionized water, 2-10% of polyving akohol, 20-35% of mixed monomer 1, 4-20% of mixed monomer 2, 0.6-2% of compound emulsifier, 0.1-0.5% of pH buffering agent and 0.1-1% of initiator. The preparation method employs a staging polymerization mode, in a first stage, vinyl acetate monomer is polymerized to form a polymer seed; in a second stage, a styrene monomer is polymerized in the polymer seed to form emulsion particles with a two-phase separation structure. According to the invention, the process is simple, the cost is low, the boiling water resistance performance of the polyvinyl acetate emulsion is increased, no environmental pollution is generated, and cold pressure curing at normal temperature, and the styrene modified polyvinyl acetate emulsion can be directly used as aqueous adhesives.

The invention relates to ultraviolet anaerobic dual-cured paint, containing an anaerobic curing agent combination. The paint consists of oxide initiator accounting for 30 to 60 percent, catalysts accounting for 10 to 35 percent and reduced matter accounting for 5 to 40 percent. The percentages of the components in the gross weight of the paint are as follows: acrylic ester active oligomer accounts for 30 to 60 percent; in active diluent, a compound with one olefinic unsaturated double bond, a compound with two olefinic unsaturated double bonds and a compound with three olefinic unsaturated double bonds respectively account for 5 to 30 percent, 0 to 20 percent and 5 to 20 percent; solvent accounts for 0 to 30 percent; photoinitiator accounts for 1-10 percent; additive accounts for 0 to 1 percent; and the anaerobic curing agent combination accounts for 0.1 to 5 percent. A paint film formed by the paint is level in exterior appearance, obviously increased in adhesive force, flexibility, hardness and boiling water resistance, and has no residual odor. The paint is especially applicable to the protection of wood, density boards, paper and other porous base materials.

The invention discloses ceramic sol modified polyether-ether-ketone paint and a preparation method thereof. The invention aims at providing safe, environment-friendly, oleophobic and hydrophobic water-based paint and manufacturing and spray coating methods thereof. The ceramic sol modified polyether-ether-ketone paint is prepared from prime coat paint, floating coat paint and surface coat paint, wherein the prime coat paint is prepared from all the following ingredients in mass fraction: 5 to 30 parts of ceramic sol, 5 to 15 parts of alkoxy silane, 5 to 30 parts of polyether-ether-ketone matter, 2 to 20 parts of fluroresin, 5 to 20 parts of powder filler, 1 to 15 parts of pigment filler and 10 to 40 parts of solvent; the floating coat paint is prepared from all the following ingredients inmass fraction: 5 to 30 parts of ceramic sol, 5 to 15 parts of alkoxy silane, 10 to 40 parts of fluroresin, 2 to 15 parts of powder filler, 1 to 15 parts of pigment filler and 20 to 50 parts of solvent; the surface coat paint is prepared from all the following ingredients in mass fraction: 40 to 60 parts of fluroresin, 30 to 50 parts of solvent, 0.2 to 2 parts of pearl powder and 1 to 5 parts of aid. The ceramic sol modified polyether-ether-ketone paint disclosed by the invention is mainly applied to paint production.

The invention provides a preparation method of furan-modified cashew phenolic resin. The preparation method comprises the following steps of: selecting the following raw materials in parts by weight: 100-140 parts of cardanol, 32-54 parts of formaldehyde, 10-23 parts of furfuryl alcohol, 80-120 parts of dimethyl benzene and 8-10 parts of catalyst; adding the cardanol, the formaldehyde and the catalyst into a reaction kettle in proportion, reacting for 1 hour to 2 hours at 70 DEG C-80 DEG C; adding the furfuryl alcohol, and reacting for 1 hour to 2 hours at 90 DEG C-100 DEG C; adding the 80-120 parts of dimethyl benzene, heating up, separating the water by adopting an oil-water separating device until the temperature reaches 155 DEG C-160 DEG C, and performing heat preservation for 1 hour to 2 hours to obtain the furan-modified cashew phenolic resin. The preparation method of the furan-modified cashew phenolic resin has the beneficial effects of remarkably improving boiling water resistance and heat resistance of the resin, having a practical application meaning in corrosion resistance and scaling prevention of a distillation-process seawater desalting heat transfer tube as well as steam blowing resistance of a heat exchanger tube bundle of a petrifaction system, and being applicable to paint base preparation of industrial heavy-duty anticorrosive coating.

The invention belongs to the technical field of materials made of bamboo and particularly relates to a processing method for enhancing the ageing resistance of a bamboo batten. According to the specific content of boiling and pretreatment, Chinese pepper straws, paulownia wood and the bamboo battens are placed in a sodium hydroxide solution to be boiled for 6-8 hours; as to the primary drying condition, the low-power microwave condition is adopted, and then hot air drying is conducted; as to impregnation, the carbonized bamboo battens are placed in a dipping tank to be dipped; and as the secondary drying condition, the water content is lowered to be lower than 7% through hot air drying. Compared with the prior art, the processing method for enhancing the ageing resistance of the bamboo battens has the advantages that boiling, pretreatment, primary drying, impregnation and secondary drying of the bamboo battens are improved, the pore structure, the pore diameter distribution and the like of surface fiber of the bamboo battens are changed because the Chinese pepper straws are added during boiling, through cooperation of primary drying and impregnation process, the surface structure of the bamboo battens is improved, and the boiling water resistance and the ageing resistance of the bamboo battens are improved; and the retention capacity of bending strength and rigidity of the bamboo battens is good in a humid and stuffy environment.

The invention relates to a high-performance flame-retardant antistatic powder coating and a preparation method thereof, and belongs to the technical field of coatings, the coating is composed of epoxy resin, antistatic hyperbranched polyester, a high-flame-retardant curing agent, a curing accelerator, a leveling agent, a degassing agent and a pigment filler; the preparation method of the antistatic hyperbranched polyester comprises the following steps: modifying antimony-doped tin dioxide powder, and synthesizing the antistatic hyperbranched polyester. The high-flame-retardant curing agent contains two elements of phosphorus and bromine, the curing agent is finally crosslinked and cured into matrix resin of the coating in a chemical bonding manner, various properties of the coating are not influenced, and the problem that the conventional properties of the coating are seriously influenced by an additive flame retardant is avoided; the oxygen index of the powder coating is 48-51, the fire resistance is 0.95-1.15 hours according to the standard GB14907-2018, and the surface inherent resistance value is 1.14-1.35 * 10 < 4 > omega.

The invention discloses transparent polyurethane paint. The polyurethane aliphatic crosslinking type resin one-component paint, compared with linear polyurethane coating, is better than other series of coatings on aspects of paint film hardness, boiling water resistance, solvent resistance, light and color retention, resistance to firing of cigarette butts, infusion resistance and the like. Moreover, the solid component is high, the construction procedures are reduced, the transparent polyurethane paint can be rapidly dried at normal temperature, and a paint film is flat and full.

The invention relates to a glass UV (Ultraviolet) transfer printing adhesive with high hardness, water-boiling resistance and strong adhesive force and application thereof. The UV transfer printing adhesive comprises the following components in parts by weight: 1-5 parts of a fluorine-containing polyurethane acrylate oligomer, 30-50 parts of a polyurethane acrylate oligomer, 1-10 parts of a fluorine-containing acrylate monomer, 40-60 parts of an acrylate monomer, 3-5 parts of a photoinitiator and 1-5 parts of an additive. The UV transfer printing adhesive provided by the invention has high hardness, high adhesive force to glass and excellent water-boiling resistance and is particularly suitable for glass UV transfer printing in a GDM (Glass Direct Molding) process.

The invention relates to boiling-water-resistant waterborne ink applied to PVC printing, which includes, by mass, 38-46 parts of an aqueous polyurethane-acrylic resin emulsion, 35-45 parts of deionized water, 5-8 parts of a styrene-acrylic emulsion, 7-17 parts of a pigment, 1-2 parts of ammonia water, 1-2 parts of a defoamer, 2-3 parts of an additive, and 2-5 parts of nano-fluorescent powder. The pigment is a modified pigment which is modified through the steps of: mixing a common pigment, potassium hexatitanate whiskers, glass flakes, titanium dioxide, barium sulfate and ethanol, adding the mixture to a container with a stirring unit, and stirring the mixture for 15-25 min; and then adding sodium m-carboxylbenzenesulfonate, and uniformly stirring the mixture to prepare a micro-emulsion; moving the micro-emulsion into a vacuum ball milling tank, and placing the ball milling tank in a ball mill to perform planetary vacuum ball milling; and relieving pressure, discharging the materials, and drying the materials to prepare the modified pigment. The boiling-water-resistant waterborne ink is high in color fastness to light, has high adhesion force, is low in viscosity and is good in water resistance.

The invention discloses a boiling-water-resistant water-based glass coating material and a preparation method thereof. The preparation method comprises the following steps: stirring and dispersing water-soluble epoxy modified acrylic resin for the first time; stirring and dispersing the component again, then adding the cosolvent, continuously stirring and dispersing the component, then adding thewater-based defoaming agent; stirring and dispersing the components, and then adding the water-based wetting agent; continuously stirring and dispersing the components, then adding the deionized water; finally stirring and dispersing the component and then adding the water-based amino resin, and uniformly stirring the mixture to obtain a component A; mixing the component A, the component B, waterand a coloring agent to obtain the boiling-water-resistant water-based glass coating material, wherein the component B is a silane coupling agent. According to the invention, the water-soluble resin can be better dissolved in water by virtue of the feeding sequence and process parameters, so that the use of a cosolvent is reduced, and meanwhile, the assistants are more uniformly and stably dispersed in a coating system, so that the product quality is ensured. Color paste or color concentrate can be added into the water-based glass coating, the water-based glass coating has good color development performance and vividness, the coating is resistant to boiling water boiling for 2 h after being dried and has no abnormity, and particularly the problems that existing water-based glass coatings on the market have no adhesion and are not resistant to boiling water boiling after sky blue color concentrate is added are solved.

The invention belongs to the technical field of polymer polymerization, and discloses a silicon-titanium hybrid acrylate polymer and double-cured paint prepared therefrom. The silicon-titanium hybridacrylate polymer is obtained by the following steps: adding an acrylate monomer, a silane coupling agent, a hydroxyl group-containing acrylate monomer and a carboxyl group-containing acrylate monomerinto an initiator for free radical polymerization to obtain a carboxyl group-containing prepolymer; then adding p-hydroxyanisole and triphenylphosphine, and using glycidyl methacrylate to react with acarboxyl group in the main chain of the carboxyl group-containing prepolymer to introduce a double bond and obtain an organosilicon hybrid acrylate prepolymer; and then adding a titanate monomer, andstirring at room temperature with humidity being not more than 30%. The invention provides silicon-titanium hybrid acrylate which is capable of double curing. The paint has both excellent continuousanti-fog property and boiling water resistance after being cured into a film.

A waterproof reinforcing agent for a urea-formaldehyde adhesive for a boiling-resistant artificial board comprises the components as follows: 30% of aluminum sulfate, 20% of calcium hydroxide, 20% of stearic acid, 5% of potassium dichromate, 20% of aluminum silicate and 5% of 1,2,3-triphenyl cyclopropane. According to the waterproof reinforcing agent, in a condensation process of formaldehyde and urea, hydrophilic groups such as OH-, urea bonds and the like can be removed effectively and radically in a condensation process of the urea-formaldehyde adhesive under the action of the temperature and acid-base catalysts, the defect that application effects cannot be realized due to the fact that prepared traditional urea-formaldehyde adhesives are modified by melamine to be waterproof or become waterproof through paraffin is overcome, the waterproof performance is realized during production of the urea-formaldehyde adhesive, fm copolymers are produced through cross-linking reactions, effects of 3N heterocyclic rings in the urea bonds and MUF (melamine-urea-formaldehyde) copolymers are eliminated, and the dosage of the melamine of the traditional modified urea-formaldehyde adhesives can be saved by 60%.

The invention discloses a water-based two-component wood lacquer, which comprises a matrix emulsion and a curing agent in a weight ratio of 100:(10-15), wherein the matrix component is mainly preparedfrom the following raw materials: a soft monomer, a hard monomer, a cross-linking monomer, a fluorine-containing functional monomer, methacrylic acid, hydroxyethyl methacrylate, an emulsifier, an initiator and water, wherein the glass-transition temperature of the soft monomer is less than or equal to 20 DEG C, and the glass-transition temperature of the hard monomer is more than or equal to 100DEG C. Correspondingly, the invention further discloses a preparation method of the water-based two-component wood lacquer. The wood lacquer disclosed by the invention has the characteristics of low cost and good film-forming property, and a formed coating film has the advantages of high hardness, good pollution resistance, good water resistance and good boiling water resistance.