191 results about "Dibutyl tin dilaurate" patented technology

The application provides a wear-resistant transparent flexible fluorine-free super-hydrophobic composite coating and a preparation method thereof. The preparation method comprises the following steps: mixing and reacting hydroxyl-terminated polydimethylsiloxane, gamma-aminopropyl triethoxysilane and dibutyl tin dilaurate to obtain a modified precursor solution, adding swelled epoxy resin into the modified precursor solution, and obtaining a siloxane modified epoxy resin after heating reaction; dispersing nano-silicon dioxide in an ethyl acetate solution to form a SiO2 suspension; uniformly mixing the modified epoxy resin and the SiO2 suspension, adding polyether amine as a curing agent, and stirring and mixing, and then adopting an air spraying mode to build an epoxy resin / hydroxyl-terminated polydimethylsiloxane / nano-silicon dioxide super-hydrophobic coating on a substrate. The preparation method can prepare a super-hydrophobic coating with excellent transparency and flexibility, good adhesion and wear resistance, and has a wide application prospect in the fields of wearable electronic devices and optoelectronic devices.

The invention discloses a modified waterborne polyurethane adhesive and a preparation method thereof, and relates to the technical field of adhesives. The carbon dioxide-based polycarbonate polyol is prepared from the following raw materials in parts by mass: 70 to 84 parts of carbon dioxide-based polycarbonate polyol, 8 to 9.6 parts of hexamethylene diisocyanate, 3 to 3.6 parts of isophorone diisocyanate, 0.01 to 0.012 part of dibutyltin dilaurate, 10 to 12 parts of N-methyl pyrrolidone, 3.5 to 4.2 parts of dimethylolpropionic acid, 0.1 to 0.5 part of 1, 3-butanediol, 0.1 to 0.5 part of a catalyst and 0.1 to 0.5 part of a catalyst. The adhesive is prepared from the following components in parts by weight: 1 to 1.2 parts of 1, 4-butanediol, 21 to 25.2 parts of modified polyurethane dispersion, 2 to 2.5 parts of silane-terminated dynamic cross-linking agent, 2.8 to 3.4 parts of triethylamine, 40 to 60 parts of acetone, 200 to 220 parts of deionized water and 10 to 12 parts of ethylenediamine aqueous solution. By introducing the modified polyurethane dispersion and the silane-terminated dynamic cross-linking agent, the base material universality, water resistance and temperature resistance of the adhesive are effectively improved.

The invention discloses an inorganic-organic hybrid cross-linked network high-toughness material and a preparation method thereof, and belongs to the technical field of engineering material preparation. The high-toughness material is composed of an inorganic phase component and an organic phase component, the inorganic phase component is prepared from 5 to 10 parts of amino modified silicon dioxide nanoring; the organic phase component is prepared from the following components in parts by weight: 90 to 105 parts of polycaprolactone glycol, 14.5 to 16.5 parts of isophorone diisocyanate, 0.8 to 1.5 parts of dibutyltin dilaurate, 4 to 6 parts of bis-catechol borane and 6 to 10 parts of polydopamine nano particles. The fracture performance of the material can reach 20 kJ / m or above and is far higher than-1 kJ / m of a common elastomer and-10 kJ / m of high-toughness hydrogel, and meanwhile the tensile strength of 30 MPa or above is kept. According to the material disclosed by the invention, the dynamic borate bond is utilized, after the material is in contact with a damaged section, efficient self-repairing can be realized after the material is placed at room temperature for 24 hours, and the repairing efficiency is gt; by heating and applying pressure, the whole material can be reshaped through fracture and recombination of the dynamic bonds, and green and sustainable effects are achieved.

The invention relates to the technical field of light building boards, in particular to a heat preservation and insulation polyurethane sandwich building board and a preparation method thereof. The method comprises the following steps: polishing, washing and drying the inner surface of an aluminum plate to obtain a pretreated aluminum plate; the two pretreated aluminum plates are fixed in parallel, and the peripheries are sealed to form a pouring cavity; the preparation method comprises the following steps: mixing polyether polyol, a hydroxylated flame retardant, flame-retardant polyol, a surfactant, triethylamine, triethylene diamine, dibutyltin dilaurate and deionized water, uniformly stirring, then adding polyisocyanate, and uniformly stirring again to obtain a polyurethane foaming mixture; and pouring the polyurethane foaming mixed material into the cavity, and curing to obtain the polyurethane sandwich building board. The polyurethane sandwich building board prepared by the invention has excellent thermal insulation property and flame retardance, so that the polyurethane sandwich building board has a wide application prospect in the technical field of light building boards.

The invention discloses a hydrophobic anti-icing material based on silver ions and application in a power transmission line, and belongs to the technical field of hydrophobic anti-icing materials, the hydrophobic anti-icing material is prepared from the following raw materials in parts by weight: 80-120 parts of hydroxyl-terminated polydimethylsiloxane, 5-15 parts of tetraethoxysilane, 0.5-3 parts of silver nitrate, 3-10 parts of hydrophobic nano silicon dioxide and 1-5 parts of nano titanium dioxide. The invention discloses an anti-icing and deicing composite material, which is prepared from the following components in parts by weight: 80 to 120 parts of butyl acetate, 0.1 to 0.5 part of dibutyltin dilaurate, 0.5 to 2 parts of sodium citrate and 2 to 5 parts of modified fluorinated phosphotungstic acid imidazole compound, and solves the problems that the existing material is insufficient in photo-thermal utilization rate, poor in stability in a severe environment, insufficient in hydrophobic capacity and difficult to give consideration to anti-icing and deicing effects. According to the scheme, the modified fluorinated phosphotungstic acid imidazole compound and silver ions are introduced to form a synergistic effect, formation of an ice layer is inhibited, melting of the ice layer is promoted, meanwhile, lasting super-hydrophobicity is provided, a durable hydrophobic anti-icing coating based on the silver ions is formed, and the safety of a power grid is guaranteed.

The invention relates to the technical field of high polymer materials, and particularly discloses a flame-retardant heat-conducting silica gel insulating coating and a preparation method thereof. The invention discloses a flame-retardant heat-conducting silica gel insulating coating. Comprising the following components: polydimethylsiloxane, aluminum hydroxide, modified nano aluminum oxide, a phosphorus-nitrogen flame retardant, silicon dioxide, methyltris (methylethylketoxime) silane, vinyltris (methylethylketoxime) silane, dibutyltin dilaurate, a diluent, amino propyl triethoxy silane, propyl trimethoxy silane and ethyl aminopropyl trimethoxy silane. And the polydimethylsiloxane is formed by compounding polydimethylsiloxane with the viscosity of 1,500 cp and polydimethylsiloxane with the viscosity of 20,000 cp. According to the invention, by finely blending the proportion of various functional components, especially the optimal combination of polydimethylsiloxane, modified nano aluminum oxide, the flame retardant and the filler, the flame retardance and thermal conductivity of the coating are effectively improved, and meanwhile, good insulativity and mechanical properties are ensured.

The invention discloses a silane modified polyether sealant and a preparation method thereof, and belongs to the technical field of sealants. The sealant is prepared from the following raw materials in parts by mass: 80 to 100 parts of MS prepolymer, 1 to 3 parts of silane coupling agent, 10 to 20 parts of plasticizer, 10 to 30 parts of polydopamine modified boron nitride, 40 to 60 parts of nano calcium carbonate, 0.3 to 0.5 part of dibutyltin dilaurate, 0.1 to 0.4 part of light stabilizer and 0.5 to 1 part of ultraviolet absorbent. Wherein the MS prepolymer is obtained by carrying out hydrosilylation reaction on modified allyl-terminated polyether and hydrogen-containing silane, and a side chain of a molecular chain of the modified allyl-terminated polyether contains a benzoic acid structure. A rigid unit with an aromatic ring structure and polar carboxyl are introduced into a polyether long-chain side chain of silane modified polyether to form an MS prepolymer, and the MS prepolymer and polydopamine modified boron nitride have a synergistic effect, so that the sealant is endowed with high hardness and good flexibility.

The invention discloses a preparation process of coating slurry for a lithium ion battery diaphragm. Comprising the following steps: step 1, uniformly mixing polyether polyol, a modified additive, dibutyltin dilaurate, dimethylolpropionic acid and isophorone diisocyanate, under a protective atmosphere, raising the temperature to 80-90 DEG C, reacting for 3-4 hours, then adding 1, 4-butanediol, continuously reacting for 3-4 hours, after the reaction is finished, cooling to 40-50 DEG C, then adding triethylamine, stirring for 30-40 minutes, and then, carrying out heat preservation for 30-40 minutes, so as to obtain a polyurethane prepolymer; slowly adding deionized water to obtain a polyurethane adhesive; 2, inorganic particles, a polyurethane adhesive and a dispersing agent are mixed and stirred at the normal temperature for 10-12 h, and the coating slurry is obtained. The flame-retardant battery diaphragm has the beneficial effects that the flame-retardant unit and the modified additive of the quaternary ammonium salt group are introduced into a polyurethane adhesive system, so that the prepared battery diaphragm has excellent flame retardance, enhanced mechanical property and good electrolyte wettability.

The invention provides a high-strength fire-resistant cable and a preparation method thereof, and belongs to the technical field of cables, and the preparation method of the high-strength fire-resistant cable comprises the following steps: reacting nano-hydroxyapatite with 10-(2-methacryloyloxy) monodecyl phosphate in ethanol, and drying to obtain modified hydroxyapatite; ethylene-vinyl acetate copolymer, magnesium hydroxide, zinc borate, zinc stannate, polyethylene wax, vinyltrimethoxysilane, 2-hydroxy-2-methyl propiophenone and modified hydroxyapatite are mixed, melt-extruded and illuminated at constant temperature, and a sheath layer is obtained; mixing tetraethoxysilane, ethanol, dibutyltin dilaurate, fumed silica, phlogopite paper and glass fibers, heating and aging, and cutting to obtain a fireproof layer; the insulating layer, the fireproof layer and the sheath layer are sequentially coated on the conductor to prepare the high-strength fireproof cable, and the cable prepared by the invention has good mechanical property, electrical insulating property and fireproof property.

The present application relates to photosensitive polyimide oligomer, preparation method and polyimide photosensitive resin composition prepared by the same, the present application provides the molecular formula of photosensitive polyimide oligomer, which is prepared from 1, 4, 5, 8-naphthalene tetracarboxylic anhydride, N, N-dimethylacetamide, triethylamine, tetramethyl benzene dimethyl diisocyanate, hydroquinone methyl ether, dibutyl tin dilaurate and hydroxyethyl acrylate according to the molar ratio of 2.5:10-15:1.2-1.6:3.0:0.0035-0.0045:0.007-0.01:2-2.5.The good solubility group is introduced into the molecular structure, so that it has good solubility in active diluent, and the polyimide oligomer can be photocured reaction;The device printed by the polyimide photosensitive resin composition prepared by the same has small shrinkage, high precision, and has the excellent performance of photosensitive polyimide oligomer, and has certain toughness and excellent weather resistance.

The application discloses an environment-friendly fluorine-free super-hydrophobic coating material and a preparation method thereof, and belongs to the technical field of super-hydrophobic coating materials. The preparation method comprises the following steps: mixing hyperbranched polyurethane, ethyl acetate and propylene glycol methyl ether acetate for 10-20 min, then adding polydimethylsiloxane and octadecyl isocyanate to carry out mixing reaction for 60-80 min, then adding multistage microspheres to carry out ultrasonic treatment for 15-30 min, and then adding Isopar G, isophorone diisocyanate, silane coupling agent KH-560, dibutyl tin dilaurate and triethylenediamine to carry out stirring and dispersion for 30-50 min, so as to obtain the environment-friendly fluorine-free super-hydrophobic coating material. The environment-friendly fluorine-free super-hydrophobic coating material prepared by the application has good super-hydrophobicity, self-repairing function and wear resistance.

Belonging to the technical field of fabric degradation, the invention relates to an ecological green fabric degradation process, which belongs to the technical field of fabric degradation, and comprises the following steps: adding anhydrous N, N-dimethylformamide to a reaction kettle equipped with a mechanical stirrer, a condenser pipe and a nitrogen protection device to dissolve hyperbranched polyglycidyl ether with a number average molecular weight Mn of 2000-5000 g / mol, adding dibutyltin dilaurate of which the use amount is 0.1-0.5% of the mass of the hyperbranched polyglycidyl ether, dropwise adding 3-isocyanate propyl triethoxy silane while stirring, heating to 58-62 DEG C, and reacting for 3.5-4.5 hours, so that isocyanate groups react with part of hydroxyl groups on the surface of the hyperbranched polyglycidyl ether to form carbamate bonds; according to the scheme, a specific shell structure is constructed, so that the defect that degradation components are easy to lose in a traditional process is effectively overcome, and in an actual test, the scheme can effectively prevent the loss of functional components in a washing process and ensure the stability of the fabric in a taking period.

The invention relates to the field of new chemical materials, and discloses a polyacrylamide / polyurethane dual-network hydrogel based on a sacrificial bond energy dissipation mechanism and a preparation method thereof. The preparation method comprises the following steps: S1, preparing an acrylamide precursor, adjusting the pH value, carrying out polymerization to obtain polyacrylamide colloid, and carrying out crushing granulation, alkaline post-hydrolysis, drying and secondary crushing to obtain powder; s2, enabling polyethylene glycol and hexamethylene diisocyanate to react under the catalysis of dibutyltin dilaurate by adopting a prepolymer method, adding a chain extender, and performing neutralization hydrophilization, high-speed shearing emulsification and ethanediamine post-chain extension to obtain a waterborne polyurethane emulsion; s3, performing in-situ polymerization on the powder and the emulsion by a one-pot method to form an interpenetrating double-network structure; the hydrogel obtained in the invention takes a waterborne polyurethane network as a sacrifice bond to consume energy, and a polyacrylamide network maintains matrix integrity, so that the hydrogel has better mechanical properties and can be used in different fields such as biomedical engineering.

The application discloses a preparation method of an interface treatment agent for a steel structure, and comprises the following steps: adding graphene powder and boron nitride powder into a mixed solution composed of ethanol and water, performing ultrasonic treatment, then centrifuging the mixed solution, collecting supernatant, drying the supernatant, and obtaining graphene nanosheet / boron nitride nanosheet composite material; mixing and stirring polydimethylsiloxane, dibutyltin dilaurate and the graphene nanosheet / boron nitride nanosheet composite material, adding polyacrylate emulsion, and performing stirring treatment to obtain modified polyacrylate emulsion; mixing cement, redispersible latex powder, river sand, defoaming agent, triethanolamine and hydroxyethyl methyl cellulose as dry material components; and taking the modified polyacrylate emulsion as a liquid component. The interface treatment agent can not only effectively improve the interface performance between the steel structure and mortar, but also improve the corrosion resistance and weather resistance of the surface of the steel structure.

The invention relates to the technical field of fluorosilicone resin water cups. The fluorosilicon resin composite material is prepared from the following raw materials in parts by weight: 50 to 70 parts of hydroxyl-terminated polydimethylsiloxane, 10 to 20 parts of tetraethoxysilane, 25 to 35 parts of perdecafluorooctyltriethoxysilane, 5 to 15 parts of phenyltrimethoxysilane, 10 to 20 parts of xylene, 3 to 8 parts of an additive and 1 to 2 parts of dibutyltin dilaurate. According to the invention, ryegrass contains natural antibacterial ingredients of flavones and phenols, lignin and phenol in the powder also have antibacterial properties, phenolic hydroxyl groups of phenol can be combined with bacterial proteins to denature the proteins and inhibit bacterial growth, and benzyltriethylammonium chloride in the base material is added, so that bacteria can permeate to interfere the metabolism of the bacteria, and the antibacterial property of the powder is improved. Silver ions and quaternary ammonium salt can be slowly released through the resin matrix, the antibacterial effect is maintained for a long time, and the antibacterial performance of the fluorosilicone resin composite material water cup is improved.

This invention discloses a fluorine-free waterproofing agent and its preparation method, relating to the field of waterproofing agent technology. The preparation method involves mixing nano-silica with acrylate-terminated polydimethylsiloxane, octadecyl methacrylate, and methacryloxypropyltrimethoxysilane, followed by dropwise addition of azobisisobutyronitrile (AIBN) to obtain an organic-inorganic hybrid prepolymer acetone solution. Polycaprolactone diol, isophorone diisocyanate, and dibutyltin dilaurate react to prepare a polyurethane prepolymer. The mixture is then cooled and reacted with dimethylolpropionic acid and acetone, followed by further cooling, neutralization, and emulsification to obtain an aqueous polyurethane dispersion. This dispersion is then emulsified with the hybrid prepolymer, reacted with methyl methacrylate and hydroxyethyl acrylate, and finally reacted with glycerol polyglycidyl ether to obtain a composite emulsion. An antifoaming agent, leveling agent, and bactericide are added to the composite emulsion to obtain the fluorine-free waterproofing agent. The waterproofing agent of this invention provides durable waterproofing performance after being applied to fabrics.

The invention discloses a synthetic capsaicin microcapsule sustained-release seed coating agent as well as a preparation method and application thereof, and belongs to the technical field of agricultural chemistry. The preparation method of the synthetic capsaicin microcapsule sustained-release seed coating comprises the following steps: dissolving synthetic capsaicin in a cyclohexanone solvent, adding diisocyanate dicyclohexylmethane, and mixing to obtain an oil phase; adding OP-10 into the tea saponin extracting solution, and performing ultrasonic dissolution to obtain a water phase; adding the water phase into the oil phase, stirring and shearing; adding dibutyltin dilaurate into the sheared solution, and reacting in a dark place to obtain a synthesized capsaicin microcapsule; and adding an auxiliary agent acceptable to the seed coating agent into the synthesized capsaicin microcapsule to obtain the synthesized capsaicin microcapsule sustained-release seed coating agent. The synthesized capsaicin microcapsule slow-release seed coating agent has efficient bird repelling activity, environmental friendliness and slow-release characteristics, continuous repelling from the sowing stage to the seedling stage is achieved, and meanwhile the influence on non-target organisms is reduced.

The present application relates to a kind of short process technology for manufacturing high-performance phosphor copper ball by waste copper, belong to non-ferrous metal processing technical field.Waste copper is sorted, broken, soaked, paint removal, impurity removal and then added to medium-frequency induction melting furnace, and refining agent is added for refining;Phosphor copper alloy is slowly added to the copper liquid after refining;After adding phosphor copper alloy, the copper liquid is introduced into the upper continuous casting equipment, and the copper liquid is cooled and solidified in crystallizer, and phosphor copper ball blank is directly drawn;Phosphor copper ball blank is placed in annealing furnace, and annealing is carried out;Then it is cooled by polyetheramine-bisphenol A epoxy cooling liquid;Mechanical polishing, ultrasonic cleaning obtain high-performance phosphor copper ball;Polyetheramine-bisphenol A epoxy cooling liquid is prepared by polyetheramine, bisphenol A epoxy resin, ethylene glycol butyl ether, 2,5-dimercapto hydroquinone, dibutyl tin dilaurate, deionized water, triethylamine, graphene microsheet;Phosphor copper ball has high hardness and electrical conductivity, and is a kind of high-performance phosphor copper ball.

The invention relates to the technical field of road engineering materials, in particular to modified asphalt and a preparation method thereof. Comprising road asphalt, a geopolymer precursor solution, a star-shaped SBS modifier, epoxidized natural rubber, epoxidized soybean oil, a mercapto silane coupling agent, dibutyltin dilaurate, hydrogenated petroleum resin, nano organic montmorillonite, a wax regulator, a light stabilizer and an antioxidant. The geopolymer precursor solution, the epoxidized natural rubber and the epoxidized soybean oil are subjected to synergistic reaction under a mercaptosilane bridging system to construct a stable organic-inorganic hybrid interpenetrating network structure, so that the technical bottleneck of poor two-phase compatibility is effectively overcome; the modified asphalt has the advantages of excellent high-temperature stability, strong interface bonding force, excellent water damage resistance, good low-temperature toughness and good storage stability.

The invention relates to the technical field of plugging coatings, in particular to a mining low-breathability fireproof plugging coating and a preparation process thereof. The mining low-permeability fireproof plugging coating is prepared from the following raw materials in parts by weight: 15 to 20 parts of diphenylmethane diisocyanate, 6 to 10 parts of polyether polyol, 0.4 to 0.8 part of fatty alcohol-polyoxyethylene ether, 1.2 to 1.5 parts of a carbon layer densification promoting fireproof agent, 0.4 to 0.6 part of a BYK defoaming agent, 30 to 35 parts of Portland cement, 15 to 18 parts of perfluoropolyether sodium carboxylate modified river sand, 3 to 4 parts of dibutyltin dilaurate and 2 to 5 parts of calcium carbonate. 0.1-0.2 part of a polycarboxylate water reducing agent, 2-5 parts of water glass and 60-80 parts of deionized water. According to the invention, the carbon layer densification promoting fireproof agent is prepared, organic materials and inorganic materials are reasonably mixed, the prepared composite spray coating can be firmly adhered after being sprayed to a wall body, and the plugging material formed after solidification at normal temperature has excellent fireproof and flame-retardant properties and low air permeability.

The invention relates to a bio-based fabric conversion process, which belongs to the technical field of fabrics, and comprises the following steps: mixing glycerol, itaconic acid and 4-toluene sulfonic acid according to a mass ratio of (9.0-10.0): (12.5-13.5): (0.01-0.02), introducing nitrogen for protection, heating to 140-160 DEG C, carrying out melt polycondensation reaction for 2-4 hours, vacuumizing, carrying out vacuum dehydration treatment for 1-3 hours, and cooling to obtain hydroxyl-terminated hyperbranched polyester; the hydroxyl-terminated hyperbranched polyester is dissolved in anhydrous acetone, isophorone diisocyanate and dibutyltin dilaurate are added, the mass ratio of the isophorone diisocyanate to the hydroxyl-terminated hyperbranched polyester is (1.0-1.2): 1, the mixture is stirred at the constant temperature of 50-60 DEG C for a reaction for 1.5-2.5 h, an isocyanate-terminated prepolymer is prepared, and the isocyanate-terminated hyperbranched polyester-dibutyltin dilaurate copolymer is obtained. The formed flexible cross-linked network can effectively disperse stress concentration when the fibers are subjected to external force, and accumulation of stress on a single cross-linked point is avoided.

The invention provides a preparation method of an environmental response type moisture absorption and sweat releasing sports knitted fabric, which comprises the following steps: S1, mixing and stirring polydimethylsiloxane, dibutyltin dilaurate and THF (tetrahydrofuran) solution to form corresponding PDMS (polydimethylsiloxane) dispersion liquid, then adding nano silicon dioxide, and ultrasonically dispersing uniformly to prepare hydrophobic finishing liquid; s2, coating one side of the knitted fabric with a hydrophobic finishing agent, and performing drying treatment to obtain a fabric subjected to hydrophobic finishing; s3, adding microcrystalline cellulose into a mixed solvent of urea, NaOH and water in a mass ratio of 12: 7: 81, and completely dissolving to obtain a cellulose solution; and S4, coating one surface, which is not subjected to hydrophobic finishing, of the fabric with an aqueous solution containing the HTCC coated CMC-Na particles, then coating with a cellulose solution, and finally freeze-drying to obtain the moisture-absorbing and sweat-releasing sports knitted fabric. The invention provides a preparation method of an environment response type moisture absorption and sweat releasing sports knitted fabric. The environment response type moisture absorption and sweat releasing sports knitted fabric has a synergistic effect of sweat triggering, directional moisture absorption and efficient sweat releasing.

The present disclosure provides a self-healing polyurethane resin and a preparation method thereof. The preparation method of the self-healing polyurethane resin coating comprises the following steps: polytetrahydrofuran is placed in a three-necked flask, heated to remove water and kept in an oxygen-free environment; a certain amount of isophorone diisocyanate and a catalyst dibutyltin dilaurate, anhydrous tetrahydrofuran are added into the system and reacted at this temperature; the system is cooled and 1,4-butanediol or bis(2-hydroxyethyl)disulfide, anhydrous tetrahydrofuran are added into the system for reaction; after the reaction is completed, the system is immediately cooled, more than solvent is spun off by rotary evaporation, the product is coated on the surface of a substrate and solidified to form a coating. The obtained coating has high self-healing ability, long healing life, low curing temperature, and excellent mechanical properties and corrosion and stain resistance.

This application relates to the field of artificial stone technology, specifically to an artificial marble and its preparation method. The artificial marble of this application comprises the following components in parts by weight: 100 parts marble powder, 8-12 parts aliphatic polyisocyanate, 20-30 parts polypropylene glycol, 0.2-0.3 parts dibutyltin dilaurate, 10-15 parts cellulose ether modified magnesium lithium silicate, 5-7.5 parts polyvinyl acetate, and 2-3 parts flame retardant. This application uses aliphatic polyisocyanate to replace unsaturated polyester resin, reducing unsaturated double bonds in the system. Combined with cellulose ether modified magnesium lithium silicate and polyvinyl acetate, it improves the mechanical properties of the marble, thereby obtaining an artificial marble with excellent weather resistance, stain resistance, mechanical strength, and flame retardancy.

The invention provides a preparation method of a waterborne polyurethane emulsion without a volatile solvent, and belongs to the technical field of material preparation. The preparation method comprises the following steps: taking polyether glycol, hexamethylene diisocyanate and 2, 2-dimethylolpropionic acid (DMPA) as raw materials, taking dibutyltin dilaurate as a catalyst, carrying out one-pot polymerization in a specific reaction medium triethyl citrate, and carrying out pH regulation and emulsification to obtain the stable waterborne polyurethane emulsion. The prepared emulsion can form a transparent polyurethane material with good mechanical properties after being dried, the boiling point of triethyl citrate exceeds 250 DEG C, and the transparent polyurethane material has good stability in daily life. According to the preparation method of the waterborne polyurethane, no volatile solvent exists in the whole process, the adopted functional components are safe in source, the treatment process is simple and convenient, and a thought can be provided for development of synthesis of a green solvent-free waterborne polyurethane solution so as to meet the requirement of green sustainable development.

The invention belongs to the field of rubber materials, and particularly relates to a high-strength heat-resistant soluble rubber material and a preparation method thereof.The preparation method comprises the following steps that a powdery anhydride-terminated polyimide prepolymer is dissolved in DMF, then a catalyst dibutyltin dilaurate solution is added, perfluorobutyl ethyl isocyanate is slowly dropwise added, stirring is carried out, and a mixture is obtained; the polyimide fluorine-containing end-capped copolymer is obtained; dissolving the imide fluorine-containing end-capped copolymer in dry dichloromethane, adding a catalyst boron trifluoride diethyl etherate complex, and introducing ethylene oxide gas into the reaction liquid to obtain a primary hydroxyl-capped fluorine-containing imide block copolymer; a primary hydroxyl-terminated fluorine-containing imide segmented copolymer is used as a soft segment; the high-strength heat-resistant soluble rubber material is prepared through a prepolymer method by taking 4, 4 '-diphenylmethane diisocyanate as a hard segment, and the soluble rubber material is prepared through a primary hydroxyl-terminated, fluorine-containing and imide-block-containing soft segment, so that breakthrough of high strength, high heat resistance and good solubility is realized.

The application discloses a kind of silver ion-based hydrophobic ice-prevention material and application in power transmission line, belong to hydrophobic ice-prevention material technical field, including the following weight parts of raw materials: hydroxyl-terminated polydimethylsiloxane 80-120 parts, tetraethyl orthosilicate 5-15 parts, silver nitrate 0.5-3 parts, hydrophobic nano-silica 3-10 parts, nano-titanium dioxide 1-5 parts, butyl acetate 80-120 parts, dibutyltin dilaurate 0.1-0.5 parts, sodium citrate 0.5-2 parts, modified fluorinated phosphotungstic acid imidazole compound 2-5 parts, solve the problem that the light and heat utilization rate of existing material is insufficient, stability is poor in harsh environment, hydrophobic capacity is insufficient and ice-prevention and deicing effect is difficult to take into account, the scheme is introduced by modified fluorinated phosphotungstic acid imidazole compound and silver ion form synergistic effect, inhibit ice layer formation and promote ice layer melting, while providing durable superhydrophobicity, form durable silver ion-based hydrophobic ice-prevention coating, guarantee power grid safety.

The invention discloses a UV pressure-sensitive adhesive for a protective film and a preparation method of the UV pressure-sensitive adhesive. The UV pressure-sensitive adhesive for the protective film comprises polyether polyol, aliphatic diisocyanate, dibutyltin dilaurate, hydroxyl acrylate, methylhydroquinone, an acrylate reactive diluent, a bifunctional crosslinking monomer and a photoinitiator. The pressure-sensitive adhesive is prepared by three steps of synthesizing urethane acrylate, preparing glue and preparing a protective film, the viscosity of the pressure-sensitive adhesive at 25 DEG C is 500-2000 mPas, and the pressure-sensitive adhesive is good in flowability, suitable for a high-linear-speed coating process, free of organic solvent, environmentally friendly, low in carbon, capable of being prepared by mixing at room temperature and short in process. The pressure-sensitive adhesive provided by the invention has the advantages of no residual adhesive, no fog shadow, excellent cohesive strength, high temperature resistance and weather resistance, solves the problems of high VOC emission, difficulty in balancing low viscosity and high performance and the like of the traditional pressure-sensitive adhesive, and is suitable for the limit protection requirement of a super-sensitive surface.

The application discloses a corrosion-resistant rare earth alloy composite material and a preparation method and application thereof. The corrosion-resistant rare earth alloy composite material comprises, from inside to outside or from bottom to top, a carbon steel base and a coating layer, wherein the coating layer comprises a rare earth alloy layer and a corrosion-resistant hole sealing layer; the surface of the carbon steel base is etched with main pits at a spacing of 10-20 microns, the diameter of the main pit is 40-60 microns, and the depth is 15-25 microns; the rare earth alloy layer is an Al-Zn-Ce-Mg-Sc alloy powder, and the surface of the rare earth alloy layer is a nitrided layer containing CeN and AlN; the corrosion-resistant hole sealing layer comprises siloxane 40-60%, epoxy resin 25-35%, shape memory polyurethane 10-20%, nano-montmorillonite 3-8%, dibutyltin dilaurate 0.3-0.8%, and a sol formed by stirring. The application solves the problems of the existing corrosion-resistant materials, such as insufficient bonding force, low density, poor corrosion resistance, short service life and poor high-temperature adaptability.

The present application relates to the technical field of polyurethane coating, in particular to a waterproof polyurethane composite coating and a preparation process thereof. The preparation process of the waterproof polyurethane composite coating comprises the following steps: preparing quercetin grafted composite filler, preparing modified isophorone diisocyanate solution and preparing polyurethane composite coating. In the present application, polybutylene adipate, dimethylol butyric acid and dibutyltin dilaurate are mixed with the modified isophorone diisocyanate solution to carry out pre-polymerization, then 2-hydroxy-5-substituted long-chain fatty acyloxy methyl benzoate is added to carry out reaction, long-chain fatty acyloxy and methyl benzoate structure are introduced into the polyurethane molecular chain, trimethylolpropane is added to carry out crosslinking reaction, finally, 1,4-butanediol is added as a chain extender to react with the remaining -NCO to prepare the polyurethane composite coating, which can effectively improve the water resistance and adhesion of the polyurethane composite coating.