30results about How to "Good self-drying" patented technology

The invention relates to water-based self-drying acrylic modified epoxy ester resin emulsion and a method for preparing the same. The water-based self-drying acrylic modified epoxy ester resin emulsion is prepared from raw materials including, by weight, 5-9 parts of reactive emulsifiers I, 6-14 parts of reactive emulsifiers II, 0.3-0.9 part of sodium bicarbonate, 3-9 parts of acrylic monomers, 30-50 parts of epoxy ester, 0.1-1.7 parts of initiators and 30-50 parts of deionized water. The water-based self-drying acrylic modified epoxy ester resin emulsion and the method have the advantages that the method for preparing the water-based self-drying acrylic modified epoxy ester resin emulsion is extremely low in solvent dosage, the reaction temperatures are easy to control, the water-based self-drying acrylic modified epoxy ester resin emulsion prepared by the aid of the method contains the reactive emulsifiers, single components in the water-based self-drying acrylic modified epoxy esterresin emulsion can be voluntarily cured at the room temperature, and paint films are excellent in self-drying, adhesion, water resistance and salt fog resistance.

The invention discloses dedicated quenching oil capable of enabling large module gears to automatically blacken after quenching and a preparation method of quenching oil, and belongs to the technical field of heat treatment. The quenching oil comprises the following components in parts by mass: 35 to 40 parts of refined base oil, 5 to 8 parts of a cooling compound agent, 0.4 to 0.6 part of a blackening compound agent, 0.3 to 0.7 part of a brightening agent, 0.5 to 0.7 part of a surfactant and 0.03 to 0.05 part of an antioxidant. The quenching oil provided by the invention particularly has a good quenching effect on the large module gears (gears of which the module is 10 mm or above), the deformation can be effectively controlled, ideal hardening layer depth, center hardness and metallographic structures are obtained, the mechanical strength and toughness required by the gears are achieved, the automatic blackening effect of the surfaces can be achieved, the two procedures of heat treatment and surface treatment of metals are perfectly combined, the resources are saved, and the timeliness is improved.

The present invention provides a polycarbonate resin for elastic hand-feel paint, the polycarbonate resin for elastic hand-feel paint comprising an unsaturated double bond and a hydroxyl group. The polycarbonate resin for elastic hand-feel paint provided by the present invention contains both unsaturated double bonds and hydroxyl groups, which can be cured by oxidation and self-crosslinking of the double bonds, and can also be cured by crosslinking with an isocyanate curing agent into macromolecules. Therefore, The polycarbonate resin for elastic hand paint of the present invention has dual curing properties, so that the polycarbonate resin for elastic hand paint has good self-drying property, softness, hydrolysis resistance, weather resistance and low temperature non-coagulation. The present invention also provides a preparation method of the polycarbonate resin for elastic hand paint and an elastic hand paint prepared from the polycarbonate resin for elastic hand paint as a raw material.

The invention discloses quenching oil capable of enabling an automobile plate spring to blacken automatically after quenched and a quenching method thereof. The invention belongs to the field of metal heat treatment technology. The quenching oil comprises the following components, by weight, 35-40 parts of refined base oil, 7-10 parts of cooling catalyzed composite agent, 0.4-0.7 parts of blackening composite agent, 0.3-0.5 parts of brightening agent, 0.4-0.7 parts of surface activating agent and 0.02-0.03 parts of antioxidant. The effect is best when the maximum cooling speed of the quenching oil for the plate spring is about 110-120 DEG C / s and the using temperature is 65-70 DEG C. Under the above conditions, the strength and the stiffness of the quenched plate spring are greatly improved, at the same time the effect of the automatic surface blackening can be realized and a protective film formed on the surface is strong in adhesion and good in wear-resisting property. Once more surface coating and rust preventing treatment after the heat treatment can be reduced, so that the resources can be saved, the processes can be reduced and the efficiency can be improved.

The invention discloses a synthesis process for air-drying waterborne polyurethane and dispersion thereof. The process comprises the following steps: (1) mixing diisocyanate and polymer polyol to react to obtain a polyurethane prepolymer; (2) controlling the temperature to 60-80DEG C, dripping hydrophilic chain extender A and chain extender B into the polyurethane prepolymer; carrying out reflux reaction for 1-5 hours; then adding alkali to form salt; and adding water to disperse and emulsify; and adding catalyst to obtain the air-drying waterborne polyurethane dispersion. The synthesis process is characterized in that dry oil grease structure containing active methylene is introduced in the polyurethane structure to synthesize air-drying waterborne polyurethane dispersion with good self-drying performance and water tolerance. The air-drying waterborne polyurethane dispersion can carry out self cross linking in the air after drying catalyst is added so as to quicken moisture to volatilize, and the drying rate is obviously improved. The air-drying waterborne polyurethane dispersion has the advantages of abundant raw material resource, simple synthesis technology and wide application prospect in the building coating field, is cheap and easy to obtain and is easy for industrial production.

The invention discloses quenching oil capable of making a fastener become black by itself after quenching and an application method of the quenching oil, and belongs to the technical field of metal heat treatment. The quenching oil comprises, by mass, 35-40 parts of refined base oil, 7-10 parts of composite cooling accelerant, 0.5-0.7 part of a composite blacking agent, 0.4-0.8 part of a brightening agent, 0.5-0.8 part of a surface active agent and 0.02-0.04 part of antioxidant. The composite cooling accelerant is the mixture of polyisobutene, dimethyl naphthalene and mahogany petroleum sulfonate. The composite blacking agent is the mixture of short oil alkyd resin, a coloring agent and a wetting agent. The brightening agent is the mixture of imidazoline oleate and methyl terpene resin. The coloring agent is disperse black 9. The wetting agent is fatty alcohol-polyoxyethylene ether. The surface active agent is span-80. The optimal using temperature of the quenching oil ranges from 70 DEG C to 75 DEG C, the speed for cooling the fastener is moderate, a protection film is formed on the surface in a self-blacking manner during quenching, and efficiency is improved.