107results about How to "Avoid demulsification" patented technology

The invention relates to an acrylic acid modified asphalt cement-based and water-proof coating and a preparation method. The emulsified acrylic acid modified asphalt cement-based and water-proof coating consists of component A and component B; wherein, the mixture ratio of the component A to the component B is from 1 : 0.5 to 1.5 (in weight); wherein, the raw materials of component A and the weight percentage thereof are respectively as follows: acrylic emulsion or amphetamine emulsion accounting for 40 to 70 percent, emulsified asphalt accounting for 10 to 50 percent, filler accounting for 8 to 20 percent, accessory ingredient accounting for 0.1 to 3 percent and water accounting for 1 to 19.0 percent; the raw materials of component B and the weight percentage thereof are as follows respectively: cement accounting for 70 to 100 percent and filler accounting for 0 to 30 percent. The acrylic acid modified asphalt cement-based and water-proof coating has the advantages of strong binding power with the base, high tensile strength, large unit extension, low cost and environment protection.

The invention discloses water-based facing type fireproof paint. The water-based facing type fireproof paint is prepared from the following raw materials in mass fraction: 18.0-20.0wt% of film forming matter, 23-23.5wt% of a carbon forming catalyst, 10-11wt% of a carbon forming agent, 12-13wt% of a foaming agent, 9-11wt% of pigment filler, 0.49-1.13wt% of auxiliaries, 20-27.5wt% of water, 0-0.8wt% of trisodium phosphate and 0-0.4wt% of a silane defoaming agent. The invention further discloses a preparation method of the water-based facing type fireproof paint. The water-based facing type fireproof paint prepared by the preparation method disclosed by the invention has good fireproof performance, good water resistance, strong adhesive force for a combustible matrix and good decorativeness, and can be used for surface coating of buildings and decorative materials.

The invention relates to a cyclosporine-containing composition and a preparation method thereof. The compound eye drops are prepared from cyclosporine, anti-inflammatory or antibiotic drugs, a surfactant, a stabilizer, a thickener, an isoosmotic adjusting agent, a pH adjusting agentr and water or oil, the preparation is a mixed suspension agent or an emulsion, and one or two of a high pressure homogenization method and a wet grinding technique is/are combined for use in the preparation method. The cyclosporine compound eye drops have the advantages that the ophthalmic tolerance is excellent, the drug utilization degree is high, the tear secretion of people suffering from xerophthalmia can be effectively improved, the tear film is stabilized, the anti-inflammation function of the anti-inflammatory or antibiotic drugs and the immunoregulation function of cyclosporine can be synergistically exerted, xerophthalmia can be effectively treated, and the compound eye drops have a better treatment effect compared with the separate application of cyclosporine.

The invention relates to an AKD (alkyl ketene dimer) starch and a preparation method thereof. The method is implemented by selecting native corn starch as a raw material of starch through the following steps of: (1) adding the native corn starch into a reactor; (2) mixing an oxidant, a synergistic agent and water so as to obtain a solution; (3) injecting the solution obtained in the step (2) into the reactor in the step (1); and (4) carrying out standing, heating, heat preservation, cooling and sieving on a reactant obtained in the step (3) so as to obtain a finished product. The pH value of the AKD starch prepared by using the method disclosed by the invention is 6.5-8.5; and the viscosity of paste (6%) of the AKD starch at the temperature of 60 DEG C is less than or equal to 30mPa.s. The method is environmental-friendly, energy-saving, mild in reaction conditions, and easy to operate.

The invention discloses a preparation method of polyaniline-graphene hollow microspheres. Firstly, isoamyl nitrite and sulfanilic acid are utilized to sulfonate graphene, the obtained sulfonated graphene is used as a Pickering emulsifier, water dispersion liquid of the obtained sulfonated graphene serves as a water phase, and toluene or an aniline monomer serves as an oil phase to perform emulsification, an oil-in-water (O/W) emulsion is obtained, then an oxidizing agent ammonium persulfate is added to trigger aniline polymerization, and the polyaniline-graphene hollow microspheres can be obtained after the oil phase toluene is removed. The polyaniline-graphene hollow microspheres are prepared by adopting a Pickering emulsion method. The preparation method is simple and efficient, and the prepared polyaniline-graphene hollow microsphere material with a three-dimensional hollow structure has larger specific surface area and a shorter ion and electron transmission path compared with a polyaniline-graphene composite material with a two-dimensional structure and has a greater potential application value on the aspects of catalysis, micro-reactors, sensing, energy storage materials and the like.

The invention discloses multifunctional environment-friendly waterproof paint. The paint comprises, by weight, 25-35 parts of waterborne acrylic emulsion, 10-20 parts of butylbenzene emulsion, 10-20 parts of titanium dioxide, 5-10 parts of light calcium carbonate, 2-5 parts of ceramic fibers, 2-5 parts of molybdenum disulfide, 1-3 parts of dispersants, 0.1-2 parts of adhesion promoters, 0.1-1 part of an ultraviolet absorbent, 0.1-1 part of an antioxidant, 0.1-1 part of a defoamer, 0.5-5 parts of thickeners, 1-2 parts of coalescing agents and 10-25 parts of water. The multifunctional environment-friendly waterproof paint simultaneously has good adhesive force and mechanical properties, is good in ageing resistance, cracking resistance and temperature adaptability, is free of toxin, and is excellent in comprehensive performance.

The invention relates to an energetic sensitizer for an emulsion explosive, in particular to an energetic additive coated with hollow microspheres for the emulsion explosive, and belongs to the fieldof energetic materials. The multi-core hollow energetic microspheres for the emulsion explosive are prepared from the following components in parts by weight: 10-50 parts of polymer monomers, 5-15 parts of an expansion agent and 5-80 parts of an energetic additive. A preparation method comprises the following steps: firstly, the polymer monomers, an initiator, a cross-linking agent and a foaming agent are mixed into an oil phase, then the energetic additive is added to the oil phase, the mixture is evenly mixed and then is dispersed in a water phase and suspended in a high-pressure reactor forpolymerization, heating is performed for curing, and thermal expandable multi-core composite energetic microspheres are obtained; finally, heating is performed for foaming and expanding, cooling is performed, and the multi-core hollow energetic microspheres are obtained. The multi-core hollow energetic microspheres can have dual effects of hot spots and the energetic additive in the emulsion explosive, and a shell can improve storage stability of the energetic additive and safety of the high-power emulsion explosive.

The invention relates to a polymer cement waterproof material and a preparation method thereof. The polymer cement waterproof material comprises silicate cement, a polyacrylate/polyurethane composite emulsion, a water reducing agent, fibers, river sands and other materials according to a certain weight proportion. The polymer cement waterproof material has the characteristics, such as high strength and easiness of adhesion to wet substrate, of cement gel materials, and also has the characteristics, such as high elasticity and good water resistance, of polymer coatings. The polymer cement waterproof material is mainly applied to waterproofing in various industrial constructions, civil constructions, bridges, tunnels, traffic transportation and other industries and fields.

The invention relates to a modified waterborne polyaniline epoxy resin coating. The modified waterborne polyaniline epoxy resin coating comprises 36-45 parts of epoxy resin, 12-20 parts of hydrochloric acid, 6-15 parts of aniline, 18-30 parts of ammonium persulfate, 9-26 parts of acrylic acid, 2-11 parts of dodecylbenzene sulfonic acid, 6-17 parts of polyamide resin, 25-45 parts of N-allylmethylamine and 22-40 parts of diethanol amine. The modified waterborne polyaniline epoxy resin coating has the advantages that a water-soluble redox system is used for initiating double-bond curing, so that the problems of system emulsion breaking and layering are avoided effectively; the coating is excellent in anti-corrosion performance and highly resistant to scratch and pitting; the coating with excellent physical and chemical performance is excellent in bonding strength for the surfaces of metal and non-metal materials, good in dielectric performance and small in setting shrinkage ratio.

The invention discloses a method for preparing large-diameter high-sphericity polymer hollow micro-spheres. The method has the advantages that curing speed reducing and rotary curing processes are organically combined with one another, curing containers are sealed in procedures for preparing polymer hollow micro-spheres by the aid of microfluidic technologies, the quantities of dual-emulsion particles in external water phases and the quantities of preliminarily added organic solvents are changed, diffusion of the organic solvents towards the external water phases can be suppressed by the aid of the solubility of the organic solvents in the external water phases, the curing speeds of dual-liquid droplet can be reduced, and spheroidization of the dual-emulsion particles can be promoted; horizontal inclination angles, rotation modes and the rotational speeds of rotary flasks are controlled, accordingly, dispersion states of the dual-emulsion particles in the external water phases can be controlled, adhesion, coalescence and emulsion breaking of the dual-emulsion particles due to mutual collision can be prevented, non-spheroidization tendency of the dual-emulsion particles can be lowered, and the large-diameter high-sphericity polymer hollow micro-spheres can be prepared; the large-diameter high-sphericity polymer hollow micro-spheres can be applied to laser inertial confinement fusion physical experiments.

The invention provides a waterborne epoxy asphalt coating. The coating comprises a component A and a component B. The component A is prepared from the following raw materials in parts by weight: 15-18parts of deionized water, 0.2-0.5 part of a pH regulator, 0.3-0.5 part of anti-sagging auxiliary agent, 0.2-0.3 part of a wetting agent, 1.1-1.3 parts of a dispersing agent, 0.1-0.2 part of a defoaming agent, 3-5 parts of talcum powder, 10-13 parts of precipitated barium sulfate, 0.5 part of carbon black, 6-10 parts of iron oxide black, 3-5 parts of antirust pigment, 24-28 parts of epoxy resin, 4-6 parts of silica sol, 1-2 parts of propylene glycol monomethyl ether, 0.2-0.4 part of a flatting agent, 0.4-0.6 part of a flash rust inhibitor, 0.7-1 part of a thickener, 15-20 parts of emulsified asphalt and 2-3 parts of a coupling agent. The component B is an aliphatic amine modified polyamide polymer. The mass ratio of the component A to the component B is 12:1. The thickness of a film formedby one-time spraying of the coating can reach 150 microns, and the coating has excellent corrosion resistance, sagging resistance and chemical resistance.

The invention relates to the technical field of coatings, and provides a sand-in-water multicolor coating and a preparation method thereof. The sand-in-water thermal insulation coating provided by theinvention comprises base paint, a protective glue solution and a continuous phase, wherein the base paint is prepared from the following components in parts by weight: 0.6-0.65 part of cellulose, 0.5-1 part of inorganic color paste, 40-50 parts of quartz sand, 3.5-4 parts of a filler, 2.5-3 parts of acrylic emulsion, 10-11 parts of silicon dioxide dispersion liquid, 0.3-0.4 part of protective glue and 30-36 parts of water. The sand-in-water multicolor paint has good stability and long storage period, meets the requirements of inorganic paint standards for buildings on the content of macromolecular organic matters, and can meet the requirements of energy conservation, environmental protection, safety, fire prevention and the like, so that a formed paint film has rich and full patterns, high simulation degree and vivid stone effect.

The invention discloses a method for preparing cement asphalt (CA) mortar for China railway track system (CRTS) II slab ballastless tracks, which comprises the following steps of: (1) mixing cement with fine sand, an expanding agent and aluminum powder according to proportion to prepare dry CA mortar powder; and (2) sequentially adding a poly carboxylic acid serving as a high-performance water reducing agent, an antifoaming agent and silica sol into water for uniform stirring, adding the dry CA mortar powder for uniform stirring, and adding asphalt emulsion for uniform stirring to obtain the CA mortar for the CRTS II slab ballastless tracks. The method has the advantages of: (1) avoiding cement particles competitively absorbing an emulsifier in the asphalt emulsion, and preventing the asphalt emulsion in the CA mortar from being demulsified to cause bleeding; and (2) reducing the using amount of the asphalt emulsion and the using amount of the water on the basis of ensuring flowability, and strengthening the strength of the CA mortar on the basis of meeting an elastic modulus of the CA mortar.

The invention discloses a high weather resistant and flame-retardant cable, which comprises a conductor, an insulating layer cladding the conductor, a packing layer cladding the insulating layer, a shielding layer cladding the packing layer, an armor layer cladding the shielding layer and an outer sheath cladding the armor layer. The outer sheath comprises the following raw materials by weight part: 45-48 parts of styrene butadiene rubber, 25-27 parts of chloroprene rubber, 17-20 parts of natural rubber, 10-13 parts of phase change control microcapsule, 0.8-1.2 parts of sulfur powder, 1.6-2.4 parts of an accelerator AA, 2.5-2.8 parts of an accelerator MZ, 8-11 parts of hard clay, 6-9 parts of sepiolite, 6-8 parts of lanthanum oxide, 5-7 parts of mica powder, 2.6-3 parts of a monoalkoxy pyrophosphate type titanate coupling agent, 2.4-2.8 parts of coconut oil, 3-6 parts of naphthenic oil, 4-6 parts of antimony trioxide, 3-5 parts of melamine, 4-6 parts of red phosphorus masterbatch, 5-8 parts of barium stearate, 1.5-2.5 parts of an anti-aging agent H, and 1.3-1.6 parts of an anti-aging agent DFC-34.

The invention discloses an acidic oil-in-water emulsion composition with low water activity. The acidic oil-in-water emulsion composition comprises the following components in parts by weight: 30-60 parts of vegetable oil, 5-15 parts of polyalcohol, 0.45-2.4 parts of a thickening agent, 2.55-5 parts of an acid agent and 24-59 parts of other base materials. On the basis that oil content is not increased, the polyalcohol of a special content is added to a formula for replacing part of water, so that the polyalcohol interacts with free water and prevents free water from generating bound water, and the content of the free water in a system is reduced; in addition, through compounding of the thickening agent of the special content, the condition that the water activity is reduced so that the stickiness of the system is increased can be controlled, the stickiness is controlled to a stickiness range operable for an industrialized production machine, and the emulsion breaking phenomenon causedby high stickiness, uneven cutting emulsifying or excessive heat is avoided. The technology is improved in the following aspects: raw materials and auxiliary materials which can generate interactionin advance mixing are separated, the feeding sequence is reasonably arranged, the acid agent is firstly added to simplify the operation technology, the homogenizing time is shortened, and the efficiency is improved.

The invention discloses a high-resolution water-based flexible printing ink comprising ink paste and acrylic emulsion. The ink is characterized in that the ink paste comprises the following components in parts by weight: 20 to 30 parts of water-based acrylic resin, 30 to 60 parts of pigment, 2 to 8 parts of dispersant 760W, 10 to 20 parts of water, 10 to 15 parts of ethanol, and 0.5 to 1 part of defoaming agent. The invention further discloses a preparation method for the ink. The quantity of the pigment is increased in the ink paste of the ink disclosed by the invention, and meanwhile, the dispersant 760W is adopted, so that a large dose of pigment can be well dispersed, and the ink has good stability and good dyeing property. The ink can reach more than 100 resolution cables and can be used for directly printing line boards, and the inking effect is similar to an offset printing effect. The third dimension of printed pictures can be reflected, and the pictures are exquisite and vivid. Moreover, the ink disclosed by the invention is water-based ink, so the ink accords with the national environmental protection policy, and can achieve the printing effect of an oil-based ink.

The invention belongs to the technical field of environment-friendly coatings and relates to an environment-friendly coating for an exterior wall and a preparation method thereof. The environment-friendly coating for the exterior wall comprises the following raw materials in parts by weight: 40 to 50 parts of an acrylic emulsion, 20-30 parts of polyether polyol, 20-30 parts of a filler, 10-20 parts of carboxymethyl betaine, 5-10 parts of isocyanate, 5-10 parts of ceramic fibers, 5-10 parts of nanometer silicon dioxide, 5-8 parts of a surfactant, 3-6 parts of a plasticizer, 1-3 parts of a drying agent, 1-2 parts of an anti-aging agent and 0.5-1 part of an anti-ultraviolet agent, wherein the anti-aging agent is prepared from zirconium oxide, nanometer titanium dioxide and modified graphene according to a mass ratio of (10-5): (4-8): 1. The environment-friendly coating is non-toxic, odorless, green and safe, has good elasticity, flexibility, waterproofness, aging resistance, abrasion resistance and ultraviolet resistance, short curing time, good hardness and long service life, can be directly painted, and is convenient to operate and applicable to exterior walls.

The invention belongs to the technical field of materials, and particularly relates to a degradable core-shell type oxidized calcium alginate gel microsphere, and a preparation method and applicationthereof. According to the preparation method disclosed by the invention, the degradable core-shell type oxidized calcium alginate gel microsphere is prepared on the basis of micro-fluidic control; andan inner oil-phase fluid, a water-phase fluid and an outer oil-phase fluid form oil/water/oil double emulsion droplets, an acidic oil phase fluid containing organic acid is introduced into the downstream position of the oil/water/oil double emulsion droplets, calcium hydrochloride nanoparticles in a water phase of the oil/water/oil double emulsion droplets are rapidly dissolved, and free calciumions are released, so oxidized alginate in a water phase and the calcium ions are initiated to undergo rapid cross-linking so as to form a gelatinous oxidized alginate layer, and the degradable core-shell type oxidized calcium alginate gel microsphere is obtained. The degradable core-shell type oxidized calcium alginate gel microsphere prepared by the preparation method has the advantages that a size structure is uniform and monodispersity is high.

The invention relates to a method for preparing energetic hollow microspheres, in particular to a method for preparing energetic hollow microspheres through microwave heating, and belongs to the fieldof energetic materials. An energetic hollow microsphere prepared by a microwave heating method mainly comprises the following components in parts by weight: 1-15 parts of an expanding agent, 1-10 parts of a wave-absorbing material, 60-95 parts of an energetic additive and 10-30 parts of a polymer monomer. The method includes: mixing a polymer monomer, an initiator, a cross-linking agent and a foaming agent to form an oil phase; then adding an energetic additive and a wave-absorbing material into the oil phase, uniformly mixing the components, dispersing the components in the water phase, carrying out suspension polymerization in a high-pressure reaction kettle, then heating and curing the product to obtain energetic microspheres, and finally carrying out microwave-assisted heating for foaming and expansion, and cooling the product to obtain the energetic hollow microspheres. Different from a traditional direct heating method with temperature gradient, the microwave heating method hasthe advantages that the temperature gradient is different, wherein the microwave can enable the energetic microspheres containing the wave-absorbing material to start to be heated and expanded at thesame time, so that the uniformity of the particle size of the final energetic hollow microspheres is guaranteed, and meanwhile breakage of part of the energetic microspheres caused by uneven heating is avoided.

The invention discloses a preparation method of a core-shell acrylic emulsion for color digital ink-jet printing. The preparation method comprises the steps of the preparation of a monomer solution A, the preparation of a monomer solution B, polymerization reaction, and the like. By using the preparation method, the stability of a polymer emulsion can be improved, especially the viscosity is not increased with the increase of storage time, and obtained products are excellent in wet color fastness, good in coating binding force and high in strength. By using a method for core-shell emulsion polymerization, used acrylic functional monomers are all polymerized in a core of an emulsion microsphere, and carboxyl does not exist in a shell formed by emulsion polymerization, so that a situation that hydroxyl in PVA and carboxyl in polymers interact to cause the demulsification of the polymers can be avoided, thereby improving the stability of weak solvent dispersion liquid.

The instantaneously fuel oil/light oil emulsifying burner includes burning unit, light oil tank, heavy oil storing tank, steam source and water tank, and inside the burning unit, there are oil emulsifying nozzle and oil igniting nozzle. The oil emulsifying nozzle is provided with oil jet in front part, atomizing steam inlet, emulsifying water inlet and heavy oil inlet in the back part, steam-water mixing chamber, oil-steam mixing chamber steam-water channel and heavy oil channel inside it. The present invention can save fuel oil andp revent pollution to atmosphere, and may be used in various oil burning boilers, heating furnace and kiln.

The invention discloses a high-strength concrete shrinkage reducing agent, and belongs to the technical field of building material. The high-strength concrete shrinkage reducing agent contains both positive ion groups and negative ion groups, is capable of improving distribution of carboxylate anion groups and effective adsorption on cement particles, increasing concrete strength, and preventing drying shrinkage cracking. According to a preparation method, tween-20 is added into a prepared mechanical reinforcing active agent for combination, so that emulsion demulsification is prevented, concrete porosity is reduced, and concrete internal mechanical performance and strength are increased. A prepared active agent capable of regulating surface tension contains amphoteric groups, so that concrete material drying shrinkage is reduced effectively. A plasticizing activator is adopted to increase concrete slurry fluidity firstly for water reducing slump retaining, plant oil is added to fill internal pores for improvement of density, and drying shirinkage prevention efficiency is increased. The high-strength concrete shrinkage reducing agent is capable of solving problems in the prior artthat shrinkage cracks still exist after adding of the concrete slump retaining agent, and influences on concrete strength are eliminated.