435 results about "Alkyd" patented technology

The invention discloses a water-based weather-resistant mildew-proof coating and a preparation method and application thereof.The mildew-proof coating comprises a water-based coating, organic mildew-proof agent missible oil and an inorganic nano-material, the water-based coating comprises water-based acrylic resin and alkyd resin, the mass ratio of the water-based acrylic resin to the alkyd resin is (20-25): 1, the organic mildew-proof agent missible oil is 1: 1, and the inorganic nano-material is 1: 1. The inorganic nano material comprises at least one of nano titanium dioxide, nano zinc oxide and nano silicon dioxide. The preparation method comprises the following steps: mixing the water-based paint, the organic mildew preventive missible oil, the inorganic nano-material, the coalescing agent, the nonionic surfactant and the deionized water to form a mixed solution, and emulsifying the mixed solution under a water bath condition of 50-60 DEG C to obtain the water-based weather-resistant mildew-proof paint. The stability and the storage stability of the mildew-proof coating are at least doubled compared with those of an existing scheme, and the mildew-proof performance is improved by 80% or above.

The invention relates to the technical field of high polymer materials, in particular to high-strength and high-toughness modified plastic particles as well as a preparation method and application thereof. The preparation method of the high-strength and high-toughness modified plastic particles comprises the following steps: carrying out a reaction on MMT / CNTs and diisocyanate to prepare isocyanate-based MMT / CNTs; the preparation method comprises the following steps: reacting isocyanate-based MMT / CNTs with glycerol 1, 3-diglycerol alkyd diacrylate to prepare MMT / CNTs containing alkenyl groups; the preparation method comprises the following steps: carrying out grafting reaction on maleic anhydride, alkenyl-containing MMT / CNTs and POE (Polyolefin Elastomer) to prepare a modifier; and carrying out melt blending, extrusion, cooling and pelletizing on the modifier, the auxiliary agent and PA6 to obtain the high-strength and high-toughness modified plastic particles. The nano filler MMT / CNTs and the polyolefin elastomer POE are introduced, so that the modified plastic particles taking the PA6 as the matrix have high strength and high toughness.

The invention discloses a waterproof and anti-fouling ceramic tile joint mixture and a preparation method thereof, and relates to the technical field of building materials. The waterproof and anti-fouling ceramic tile joint mixture is prepared from boron-containing silicon resin and cobalt-based MOF composite modified alkyd resin, super-hydrophobic carbon nano tube and silicon dioxide dispersion, cement, lepidolite lithium slag powder, nylon and silicone oil. The ceramic tile joint mixture is prepared by blending boron-containing silicon resin and cobalt-based MOF composite modified alkyd resin, a super-hydrophobic carbon nano tube and silicon dioxide dispersion, cement, lepidolite lithium slag powder, nylon and silicone oil, the surface of the ceramic tile joint mixture is of a rough structure and has hydrophobicity, and the internal extremely compact structure further reduces permeation of water and dirt. The waterproof and anti-fouling performance is remarkably enhanced, meanwhile, the excellent tensile bonding strength is achieved, the firmness and stability of the joint mixture are ensured, and the service life is effectively prolonged.

A “Passive Radiative Coating” (PRC) is designed to dissipate heat generated mainly by solar radiation, intended for use in the manufacture of overhead conductors and cables. Additionally, this coating can dissipate heat produced by the conductors themselves, known as the Joule effect, providing environmental protection and significantly improving heat dissipation capacity. The PRC is composed of at least one filler, at least one binder, and at least one surfactant. In particular, the use of calcium carbonate and / or barium sulfate as fillers, and epoxy resins, alkyd varnishes, polyurethane dispersions, casting resins, silicone-based varnishes, and sodium silicate as binders are highlighted. The surfactant is used to stabilize the mixture and acts as a stabilization additive.

The invention discloses bio-based polyester polyol based on a waste polyester depolymerization monomer and a preparation method of the bio-based polyester polyol. The method comprises the following steps: 1) carrying out alcoholysis on waste PET polyester in ethylene glycol by using a catalyst, and carrying out purification treatment such as filtration, rotary evaporation, centrifugal washing and the like to obtain an alcoholysis monomer bis (2-hydroxyethyl) terephthalate; 2) mixing bis (2-hydroxyethyl) terephthalate and bio-based dimer acid according to different alcohol acid molar ratios, and adding a catalyst for reaction to obtain rough bio-based polyester polyol; and 3) purifying the rough bio-based polyester polyol obtained in the step 2) to obtain the pure bio-based polyester polyol. According to the method, the defects that traditional petroleum-based polyester is poor in biocompatibility and biodegradability and the like are overcome, recycling of resources is achieved, and the prepared bio-based polyester polyol is uniform in structure, narrow in molecular weight and good in heat resistance.

The invention relates to the field of packaging materials, in particular to a positioning environment-friendly laser transfer film which is composed of a base film layer, a laser information layer and an aluminum plating layer. The laser information layer is prepared from the following raw materials in parts by weight: 60 to 70 parts of waterborne polyurethane acrylic resin emulsion, 10 to 15 parts of photo-initiation waterborne alkyd resin, 8 to 12 parts of dipentaerythritol hexaacrylate, 0.1 to 1 part of polyether modified polysiloxane surfactant, 1 to 5 parts of aminated nano titanium dioxide and 1 to 3 parts of functional additive. The water-based laser coating is used for replacing a solvent type coating to prepare the laser information layer, the problems that the solvent type coating is poor in environmental protection performance and poor in safety are effectively solved, and green, efficient and safe production of the vacuum aluminum plating packaging material is achieved.

The application belongs to the technical field of paint, and particularly relates to a high-weather-resistance acrylic paint and a preparation method thereof. The high-weather-resistance acrylic paint comprises the following components and weight fractions: 25-40 parts of water-based acrylic resin, 10-20 parts of functional resin, 10-25 parts of modified filler of shea butter oil, 0.1-0.5 parts of defoaming agent, and 20-40 parts of water; the functional resin is water-based polyurethane modified alkyd resin; and the filler at least comprises pyrophyllite powder and nano titanium dioxide. The acrylic paint provided by the application has excellent weather resistance, adhesion, wear resistance and good thermal stability.

The invention relates to the technical field of packaging materials, in particular to an epoxy molding compound and a preparation method and application thereof. The epoxy molding compound is prepared from the following raw materials: 40-80 parts of epoxy resin, 1-10 parts of a release agent, 0.1-3 parts of a catalyst, 50-500 parts of filler, 0.1-5 parts of a silane coupling agent and 20-60 parts of a curing agent, the release agent at least comprises alkyd ester wax; the silane coupling agent comprises a methoxy silane coupling agent. According to the invention, the formula component selection and synergistic effect of the epoxy resin molding compound are explored, a specific alkyd wax release agent and a specific methoxy silane coupling agent are preferably added into a resin / curing agent system, the preparation process is optimized, and a preparation mode of low-friction mixing and then extrusion is adopted; the microstructure and interface characteristics of the material are optimized, the novel epoxy molding compound with high CTR, low shrinkage and excellent release property is obtained, and the use requirements of optocoupler product packaging can be well met.

The invention belongs to the field of alkyd resin, and particularly relates to alkyd resin with high adhesive force and a preparation method thereof. The high-adhesion alkyd resin is prepared from soya oil acid, a nitrogen-containing heterocyclic compound, phthalic anhydride, pentaerythritol and hydroxyl-terminated polydimethylsiloxane. By introducing a nitrogen-containing heterocyclic compound (such as quinoline and triazole) and hydroxyl-terminated polydimethylsiloxane (PDMS), the molecular structure of the alkyd resin is remarkably optimized, so that the alkyd resin is superior to the traditional alkyd resin in the aspects of heat resistance, corrosion resistance, mechanical strength, adhesive force, construction performance and the like. The coating is suitable for the fields of high-temperature anticorrosive coatings, marine coatings, industrial protective coatings and the like, and shows remarkable technical advantages and wide market prospects.

The invention relates to rosin modified resin and a preparation process thereof and low-odor printing ink, the rosin modified resin is prepared from maleic anhydride, sulfonate alkyd resin, rosin and a metal organic framework, and the sulfonate alkyd resin is prepared from neopentyl glycol, dibutyltin dilaurate, m-phthalic acid-5-sodium sulfonate, phthalic anhydride and pentaerythritol. The printing ink has the effect of improving the strength and smell of the printing ink.

The invention relates to a metal passivator, and particularly discloses an environment-friendly passivation solution for a metal component and a preparation method and a passivation process of the environment-friendly passivation solution. The passivation solution comprises 1%-5% of trivalent chromium salt, 1%-5% of silicon-containing compound modified alkyd resin, 2%-15% of a film forming accelerant, 5%-15% of a complexing agent, 1.5%-2% of a hole sealing agent and the balance deionized water. The low-content trivalent chromium salt is adopted to replace traditional hexavalent chromium salt, the toxicity of trivalent chromium is far lower than that of hexavalent chromium, heavy metal pollution hazards are effectively reduced, and by adding assistants such as the silicon-containing compound modified alkyd resin, the hole sealing agent, the film forming accelerant and the complexing agent, through the synergistic effect of all the components, the corrosion resistance of the coating is improved, and the service life of the coating is prolonged. A compact, uniform and stable passivation film is formed on the surface of the sherardizing steel part, the probability of rusting and corrosion of the sherardizing steel part is remarkably reduced, the service life of the sherardizing steel part in severe environments such as high humidity and high salinity is prolonged, and high practical value is achieved.

The invention discloses a water-resistant and friction-resistant water-based art paint and a preparation method thereof, and belongs to the technical field of water-based paints.The preparation method comprises the steps that hydroxyl-terminated polydimethylsiloxane is added into a polyisocyanate and polyether polyol reaction system, a polyurethane prepolymer is synthesized, epoxy resin is added for modification, neutralization is conducted through a neutralizer, and the water-resistant and friction-resistant water-based art paint is obtained. Emulsifying by using a mixed solution of ice water and water-based alkyd resin to obtain a modified polyurethane emulsion; and adding other auxiliaries such as natural pigments to obtain the water-resistant and friction-resistant water-based art paint. The water-based art paint provided by the invention has excellent wear resistance, strong adhesive force, gloss retention and good water resistance, does not use toxic and irritant solvents in the synthesis process, does not cause pollution to the environment, and has a wide application prospect.

The invention relates to the technical field of alkyd resin, in particular to organosilicone modified waterborne alkyd resin and a preparation method thereof.The method comprises the following steps that cottonseed oil, an alcoholysis catalyst and trimethylolpropane are subjected to an alcoholysis reaction under protection of inert gas, and an alcoholysis product is obtained; 2, carrying out esterification polymerization reaction on the alcoholysis product, a water-carrying agent, phthalic anhydride and trimellitic anhydride to obtain basic alkyd resin; the organic silicon modified alkyd resin is obtained from the basic alkyd resin and organic silicon under the action of the modified catalyst; sequentially adding a cosolvent, a neutralizer and water into the organic silicon modified alkyd resin, and stirring and mixing to obtain the organic silicon modified waterborne alkyd resin. According to the invention, through a modification technology, the hydrophobicity of a coating is enhanced while the water dispersibility of the organosilicon modified alkyd resin is ensured, so that the organosilicon modified resin has self-cleaning capability and permeation corrosion resistance, a steel structure material can be effectively protected, and the service life of the steel structure material is prolonged.

The invention relates to the technical field of rubber paint, in particular to rubber paint with good wear resistance and a preparation method thereof. The rubber paint is prepared from the following raw materials in parts by weight: 60-80 parts of chlorinated rubber, 30-50 parts of solvent, 20-40 parts of alkyd resin, 10-20 parts of polytetrafluoroethylene resin, 6-10 parts of epoxy resin, 6-10 parts of filler, 4-6 parts of additive, 2-4 parts of flatting agent, 1-3 parts of ultraviolet light absorber, 1-3 parts of dispersing agent and 1-3 parts of defoaming agent. According to the rubber paint, fluorosilane has the characteristic of low surface energy, a molecular layer with low surface energy can be formed on the surface of the rubber paint, the friction force borne by the surface of the rubber paint is small due to the low surface energy, the wear resistance of the rubber paint is improved, tetraethyl orthosilicate and ammonia water are matched to generate a hydrolytic condensation reaction, and silicon dioxide nanoparticles are generated; inorganic rigid components in the rubber paint are further increased, so that the overall hardness and wear resistance of the rubber paint are enhanced.

The invention relates to a high-strength self-cleaning infrared radiation heat dissipation water-based coating as well as a preparation method and application thereof. The coating comprises the following components in parts by weight: 40-55 parts of water, 5-10 parts of a water-based binder, not more than 20 parts of a high-emissivity filler and not more than 5 parts of a fluorocarbon surfactant, the water-based binder is selected from at least one of styrene-acrylic emulsion, water-based polyurethane, polyvinyl alcohol, water-based acrylic resin, water-based epoxy resin and water-based alkyd resin, and the fluorocarbon surfactant is selected from at least one of water-based acrylic emulsion, water-based polyurethane, polyvinyl alcohol, water-based acrylic resin, water-based epoxy resin and water-based alkyd resin. The high-emissivity filler is selected from at least one of BaSO4, ZnO, Al2O3, SiC, BN (boron nitride) and SiO2, and the fluorocarbon surfactant is selected from at least one of FS-65, FS-34, ST-110, FC-4432 and FS-3100. According to the invention, ZnO, BaSO4 and the like are introduced as composite fillers, so that the coating is endowed with high strength, self-cleaning property and full-wave-band high emissivity, various properties such as wear resistance, adhesion, acid and alkali resistance, organic solvent corrosion resistance, aging resistance, high and low temperature resistance and the like of the coating are improved, and the coating can meet the requirements of various different heat dissipation scenes when being applied to electronic components.

The invention discloses modified antibacterial water-based alkyd resin and a preparation method thereof, and belongs to the technical field of alkyd resin preparation. The modified antibacterial water-based alkyd resin is prepared from the following components in parts by weight: 14 to 30 parts of polyhydric alcohol, 7 to 35 parts of polybasic acid, 20 to 50 parts of fatty acid, 2 to 5 parts of water-based monomer, 3 to 10 parts of neutralizer, 0.5 to 5 parts of modified antibacterial agent, 2 to 6 parts of complexing agent and 10 to 40 parts of deionized water. The water-based alkyd resin prepared by the method has excellent antibacterial performance, corrosion resistance and wear resistance.

The invention discloses a water-based metal anticorrosive paint and a preparation method thereof, and belongs to the technical field of water-based paints. The hyperbranched polyphosphate and the water-based alkyd resin can be subjected to a cross-linking reaction to form a compact network structure, the hyperbranched polyphosphate and a metal interface also have good bonding performance, the adhesiveness of a coating is improved, the water-based alkyd resin has good flexibility, the integrity of the coating is kept, and the water-based alkyd resin has good adhesion to the metal interface. Corrosion media are prevented from permeating, and the purpose of protecting metal for a long time is achieved; by adding the glass flakes, a complex and zigzag path can be formed in the coating, corrosion media are further prevented from permeating into metal, and therefore the corrosion resistance of the coating is improved; the organosilane-modified nano cerium oxide particles can be directionally distributed in the coating, oxygen diffusion is blocked, a rare earth conversion film can be formed on the surface of a metal base material, and a stable passivation layer is generated through hydrolysis, so that electrochemical corrosion is inhibited.

The invention discloses a high-flash-point alkyd protective coating and a preparation method thereof, the coating is a single-component product and specifically comprises high-flash-point alkyd resin, mixed alkane / aromatic solvent oil, pigment, filler, bentonite, a dispersing agent, a drier, an anti-skinning agent and the like. The coating has the advantages of high flash point (67-70 DEG C), high drying speed, yellowing resistance, impact resistance, brine resistance, excellent adhesive force, high solid content, low VOC content and the like, and can be stored and transported as common goods.

The invention discloses a wooden furniture coating, which is prepared from the following ingredients in parts by weight: 40 to 42 parts of waterborne alkyd resin, 15 to 18 parts of modified cellulose emulsion, 5 to 8 parts of polyethylene glycol, 3 to 4 parts of nano clay, 1 to 2 parts of aerogel, 1 to 1.5 parts of sodium carboxymethyl cellulose, 9 to 12 parts of pigment and 40 to 45 parts of deionized water. The preparation method of the wood furniture coating comprises the following steps: dispersing and mixing the water-based alkyd resin, polyethylene glycol, nano clay, aerogel, sodium carboxymethyl cellulose and deionized water in proportion, putting the mixture into a wet grinding machine, adding the modified cellulose emulsion and the pigment, and grinding to obtain the wood furniture coating. The prepared wood furniture coating is high in adhesive force and wear resistance and not prone to peeling and falling off, the used raw materials are all environment-friendly raw materials, the volatile organic compounds (VOC) are low, and the influence on the body and the environment is small.

The invention relates to the technical field of solid waste resource utilization, in particular to an anti-corrosion and flame-retardant alkyd primer and a preparation method thereof, and solves the problems that phosphorus-rich high manganese steel slag powder cannot be utilized on a large scale with high added value in the prior art; the content of P2O5 or MnO in common steel slag is low, and the processed steel slag has certain corrosion resistance and does not have flame retardance (non-high temperature resistance); most conventional anticorrosive fillers are iron oxide red powder, and the iron oxide red powder gradually becomes a main raw material of a new energy battery at present, so that the iron oxide red powder for the anticorrosive fillers is low in yield and high in price; and phosphorus-rich high-manganese steel slag or general steel slag has strong alkalinity, so that the alkyd resin can be quickly condensed. The problems are solved, so that the production cost of the existing single-component alkyd primer is reduced, the integration of corrosion resistance and flame retardance of the single-component alkyd primer is realized, and meanwhile, the phosphorus-rich high-manganese steel slag powder is fully utilized to realize high additional value and carbon reduction targets.

The invention relates to the technical field of anticorrosive paint, and particularly discloses water-based anticorrosive paint based on an aluminum alloy base layer and a preparation process of the water-based anticorrosive paint. The invention discloses a water-based anticorrosive coating based on an aluminum alloy base layer. The water-based anticorrosive paint is prepared from the following raw material components: 55 to 70 parts of water-based acrylic acid modified epoxy alkyd resin, 4 to 10 parts of dioctyl phosphate acyloxy titanate, 15 to 24 parts of an inorganic nano material, 1 to 3 parts of polydimethylsiloxane, 2 to 6 parts of ethyoxyl modified polytrisiloxane, 2 to 5 parts of a passivating agent and 70 to 120 parts of water. The water-based anticorrosive paint has the advantages of corrosion resistance, high binding power and good mechanical property, and can play a stable protection role when being coated on the surface of the aluminum alloy, so that the service life of the aluminum alloy is prolonged.

The invention discloses a capacitor aluminum alloy shell protective coating and a preparation method thereof, and belongs to the technical field of coating preparation. The modified epoxy resin is prepared by modifying the epoxy resin through two compounded ultraviolet absorbents, the ultraviolet absorbents are chemically bonded with the epoxy resin, migration resistance is achieved, the anti-ultraviolet and anti-aging performance of a coating is remarkably improved, degradation of the resin is delayed, and the ultraviolet absorbents and the organic silicon modified FEVE tetrafluoro resin have a synergistic effect, so that the anti-ultraviolet and anti-aging performance of the coating is improved, and the anti-ultraviolet and anti-aging performance of the coating is improved. According to the present invention, the coating has characteristics of high weather resistance, high chemical stability and further environmental erosion resistance, the antioxidant modifies the alkyd resin, the chemical bonding effect provides the significant oxidation resistance, the added nanometer anti-rust agent fills the coating microdefects, and the coating defects can be significantly reduced under the interaction with the leveling agent, the defoaming agent and the dispersant, such that the coating quality can be improved; and the service life of the capacitor shell in the outdoor or strong light environment can be prolonged comprehensively.

According to the modified water-based alkyd resin based on dicyclopentadiene and the preparation method of the modified water-based alkyd resin, the water-based alkyd resin is modified by combining diacrylic acid, cyclopentadiene modification and tung oil, and the rigidity of cyclopentadiene modification and the flexibility of tung oil achieve the modification effect of combining rigidity and softness; the problems of poor storage stability, low paint film hardness and insufficient water resistance of traditional water-based alkyd resin are successfully solved, the storage period of the water-based alkyd resin water-based paint is greatly prolonged, the formed paint film is high in drying speed and high in hardness and has good adhesive force, impact resistance, weather resistance and corrosion resistance, the production process is stable and controllable, and the production cost is low. Wide application prospects and economic values are realized.

The invention discloses a bio-based coated controlled-release fertilizer capable of being rapidly and fully degraded and a preparation method of the bio-based coated controlled-release fertilizer, and belongs to the technical field of controlled-release fertilizer production. The bio-based coated controlled-release fertilizer comprises a fertilizer core and a bio-based coating material coating the surface of the fertilizer core, the bio-based coating material is composed of vegetable oil-based alkyd resin, amino resin and a dynamic cross-linked structure modifier. The coating of the controlled-release fertilizer disclosed by the invention can be rapidly and completely degraded after nutrients are completely released, so that the harm of microplastics generated by non-degradation or incomplete degradation of the coating of the fertilizer to a soil ecosystem is reduced. Amino resin is adopted as a curing agent of a fertilizer coating, so that the risk of pollution of isocyanate to an ecological environment system can be eliminated. Compared with a coated controlled-release fertilizer using isocyanate as a coating curing agent in the market, the coated controlled-release fertilizer better meets the development requirements of green and sustainable agriculture.

The invention relates to the technical field of aluminum foil glass fiber adhesive tape processing, in particular to an aluminum foil glass fiber adhesive tape and a preparation method thereof, and the aluminum foil glass fiber adhesive tape sequentially comprises an aluminum foil layer, a polyurethane adhesive layer, a tearable glass fiber layer and a silica gel layer, the polyurethane adhesive layer is prepared from the following raw materials in percentage by weight: 40-50% of polyurethane resin, 5-10% of acrylic acid modified alkyd resin, 10-15% of a tackifier, 8-12% of a reinforcing agent, 2-4% of an adhesive agent, 1-2% of a curing agent and the balance of a diluent; the reinforcing agent is composed of nano solid filler and cellulose nanofibers, the formula of the tearable glass fiber layer and the optimized polyurethane adhesive layer is introduced, so that the aluminum foil glass fiber adhesive tape is easier to tear down in the installation and maintenance process, and the operation difficulty and complexity are reduced. Meanwhile, raw materials such as the acrylic acid modified alkyd resin and the reinforcing agent are added into the polyurethane adhesive layer, so that the physical strength of the adhesive tape is remarkably improved. Even if the adhesive tape bears external force, the adhesive tape is not easy to damage, so that the practical application effect and the durable life of the adhesive tape in wire harness protection are ensured.

The invention provides environment-friendly anti-corrosion water-based alkyd paint and a preparation method of the environment-friendly anti-corrosion water-based alkyd paint, and belongs to the technical field of paint. Comprising the following components in parts by weight: 40-60 parts of waterborne alkyd resin, 5-15 parts of nano titanium dioxide, 2-8 parts of graphene, 1-5 parts of a silane coupling agent, 3-8 parts of a coalescing agent, 1-3 parts of a dispersing agent, 0.5-2 parts of a defoaming agent, 0.5-2 parts of a preservative, 0.5-2 parts of a thickening agent and 20-40 parts of deionized water. The environment-friendly anticorrosive water-based alkyd paint disclosed by the invention takes water as a dispersion medium, does not contain an organic solvent, reduces the volatilization of the organic solvent, has excellent environment-friendly performance and meets the environment-friendly requirement; by adding the nano titanium dioxide and the graphene, the nano titanium dioxide has good chemical stability and ultraviolet shielding performance, and the weather resistance and the corrosion resistance of the paint film can be improved.

A feed valve, a tail gas outlet valve and a filter circulating valve are arranged at the top of a stirring tank, the upper side surface of the stirring tank is connected with the upper part of a filter through a filter overflow valve pipeline, and a bottom outlet of the stirring tank is connected with the bottom of the filter after being connected with a feed pump; a filter discharge pipe is divided into two paths, one path is connected with the receiving tank through a discharge valve, and the other path is connected with a filter circulating valve; a discharge pipe of the receiving tank is connected with a finished product storage tank after being connected with a discharge pump; a tail gas pipeline with a tail gas outlet valve at the upper part of the receiving tank is connected with a gas inlet of a spiral plate heat exchanger after being converged with a tail gas pipeline with a stirring tank tail gas outlet valve; the upper gas outlet of the heat exchanger is connected with a gas buffer tank after being connected with an induced draft fan, a cooling water outlet valve is arranged on the upper side, and a cooling water inlet valve is arranged on the lower side; a lower outlet pipeline is connected with a buffer tank bottom valve, then is converged with a discharge pipeline of the heat exchanger and then is connected with a solvent recovery tank, and a discharge valve is arranged at the bottom of the gas buffer tank. The device is pollution-free in production, energy-saving and consumption-reducing.

The present invention relates to the field of inks, specifically to a high-adhesion magnetic ink, its preparation method and application in chip production. The preparation method of the high-adhesion magnetic ink comprises the following steps: first, synthesize sodium carboxyl-terminated hyperbranched polyester, and then load nano-ferroferric oxide thereon to obtain hyperbranched polyester loaded with nano-ferroferric oxide; prepare a silicon-acrylic prepolymer using acrylate compounds, vinyltriethoxysilane, oleic acid, and linoleic acid as monomers, then synthesize a basic alkyd resin, and then compound the basic alkyd resin, the silicon-acrylic prepolymer, the hyperbranched polyester loaded with nano-ferroferric oxide, triethylamine, ethylene glycol dibutyl ether, ethanol, and water to prepare the high-adhesion magnetic ink. The ink can be cured by heating at 130 °C for 10 min, and has the advantages of strong adhesion fastness and good magnetic separation performance, and can be used to mark defective crystal grains, and then the defective crystal grains can be separated by magnetic separation technology.

The invention discloses weather-resistant and medium-resistant alkyd resin varnish and a preparation method thereof. The varnish is prepared from the following raw materials: modified alkyd resin, a composite drier, zirconium iso-octoate with the purity of 12%, an anti-skinning agent, 200 # solvent oil and xylene. The modified alkyd resin is prepared from the following raw materials: soya oil acid, pentaerythritol, benzoic acid, pyrrolidine-2-one-1-acetic acid, dimethylbenzene and a 200 # solvent. According to the invention, pyrrolidine-2-ketone-1-acetic acid is used as a binary acid component to partially or completely replace traditional phthalic anhydride, so that the reaction efficiency of alkyd resin synthesis can be improved, and the problems of yellowing, pulverization and poor water resistance of traditional alkyd resin can be solved; according to the varnish prepared by the invention, on the basis of maintaining the inherent gloss, flexibility and constructability of alkyd resin, the key properties such as weather resistance, water resistance and acid resistance are improved; the whole preparation process of the varnish continues to use mature alkyd resin production equipment and flow, and has good economical efficiency and industrial popularization prospects.

The invention discloses a low-VOC alkyd resin coating and a preparation method thereof, belonging to the technical field of alkyd resin coatings. The low-VOC alkyd resin coating comprises the following raw materials in parts by weight: 55-75 parts of a branched alkyd resin, 2-4 parts of an amine neutralizer, 0.05-0.1 parts of a defoamer, 0.3-0.5 parts of a dispersant, 8-15 parts of precipitated barium sulfate, 50-70 parts of deionized water, 0.3-1 parts of a leveling agent, and 0.3-0.5 parts of a drier; the branched alkyd resin, the deionized water, and the amine neutralizer are stirred and mixed for 40-45 minutes to obtain a water-dispersible resin body; and the water-dispersible resin body is uniformly mixed with the defoamer, the dispersant, the precipitated barium sulfate, and the remaining deionized water to obtain a low-VOC alkyd resin body. The preparation method is simple, the low-VOC alkyd resin body is water-based, and only a small amount of safe and environmentally friendly cosolvent is used. The final coating has a VOC content of less than 80 g / L, has high content and low viscosity, does not require the use of an organic diluent, and has the characteristics of fast drying, strong water resistance, and the like.