239results about How to "Reduce brittleness" patented technology

The invention relates to a high-strength complex-phase hot-rolled wire rod for a 2100MPa bridge cable and a manufacturing method of the high-strength complex-phase hot-rolled wire rod, and the manufacturing method comprises the following steps: rolling and spinning C-Si-Mn-Cr-Mo chemical components into a wire rod, and carrying out online molten salt tail end quenching isothermal treatment, so that the wire rod firstly passes through front-section molten salt and is cooled at a cooling speed of more than or equal to 35 DEG C / s to enter a sorbite phase region from an austenite state; the method comprises the following steps of: controlling part of austenite to be converted into sorbite, cooling to a bainite phase through rear-section molten salt, carrying out end quenching, controlling bainite phase change, carrying out isothermal tempering to remove stress, and finally carrying out roller way slow cooling to prepare a complex-phase structure comprising tempered sorbite and tempered bainite, so that abnormal structures of network carbides and martensite can be effectively controlled; the high-strength composite phase structure control and plasticity matching are achieved, the tensile strength is 1530-1560 MPa, the percentage reduction of area is 30%-35%, and the method is suitable for manufacturing 2100 MPa-grade ultrahigh-strength bridge cables with large drawing amount and beneficial to reducing the risk of wire breakage.

The invention relates to a ceramic coating for a gravure etching pot and a coating method of the ceramic coating, and belongs to the technical field of ceramic coatings. The ceramic coating comprises the primer and the finish paint, and the nano silicon dioxide sol, the inorganic pigment and the modified silicon dioxide filler in the primer jointly form a firm primer layer, so that the adhesive force of the coating and a base material is enhanced, and meanwhile, the wear resistance of the coating is improved; the reticular molecular structure of polysiloxane is stable at high temperature, so that the overall temperature resistance of the coating is improved; by adding the hollow glass beads, the density and hardness of the coating can be adjusted, and meanwhile, the heat insulation performance of the coating can be improved; the viscosity of the coating can be optimized by adjusting the contents of formic acid and deionized water, so that the coating is easier to construct and coat; and the polydimethylsiloxane is added into the finish paint, so that the non-stickiness of the coating is remarkably improved, and the surface is smoother and is easy to clean.

The organosilicon-polyurethane foam encapsulating material is composed of a component A and a component B. The component A comprises sucrose initial polyether polyol, sorbitol initial polyether polyol, a water-containing alcohol amine foaming agent, a catalyst and a halogen-free flame retardant, and the component B comprises an NCO-terminated polysiloxane-polyurethane prepolymer, silicone oil and a diluent. Wherein the water-containing alcohol amine foaming agent comprises isopropyl alcohol di-sec-butyl alcohol amine, a mixture of isopropyl alcohol sec-butyl alcohol amine and water. The two-component encapsulating material is used for encapsulating a new energy battery module.

The invention belongs to the technical field of keel bending, and particularly relates to an automatic bending device for a light steel joist, which comprises a conveyor, a bending assembly is arranged above the conveyor, and the device is provided with the bending assembly, so that the light steel joist can be attached to the surface of the bending assembly to be subjected to pre-deformation bending treatment; the light steel joist is subjected to small-angle deformation before formal bending treatment, so that the resilience after edge folding can be reduced, the residual stress in the light steel joist can be released, the possibility of quality problems such as deformation and cracking caused by stress concentration is reduced, the structural strength and durability of the light steel joist are enhanced, and the service life of the light steel joist is prolonged. The stability and reliability of the whole structure are guaranteed, the internal stress distribution is more uniform and reasonable, so that the machining precision and the product quality are improved, the bending consistency of the light steel keel is guaranteed, manual intervention is not needed, the automation degree of the bending process is greatly improved, the labor intensity is relieved, and the production efficiency is improved.

The invention discloses a method for preparing a FeMnSi alloy with a remarkable low-temperature shape memory effect through 3D printing, and the method comprises the following steps: 1, carrying out room-temperature rotary mixing on powder containing FeMnCrNiSi element components to obtain mixed powder; and secondly, the mixed powder serves as a raw material, and a metal powder bed selective laser melting 3D printing technology is adopted for preparing the block FeMnSi series alloy. By developing FeMnSi system alloy components with the characteristics of high Cr content, high Ni content and middle Si content, the stacking fault energy is effectively reduced, the defects of stacking fault, dislocation and the like in the FeMnSi system alloy are greatly improved, martensite phase transformation in the deformation process is promoted, and therefore good 3D printing process adaptability is achieved, the cracking risk is reduced, and the service life of the product is prolonged. And the material has obvious shape memory effect and tensile strength at low temperature, and is suitable for reusable impact-resistant, load-bearing and functional devices in polar space environment.

The invention relates to a modified epoxy resin adhesive and a preparation method thereof, and belongs to the technical field of high polymer materials. The modified epoxy resin adhesive comprises the following components in parts by weight: 90-120 parts of epoxy resin, 8-25 parts of a curing agent, 1-3 parts of a diluent, 0.5-5 parts of a curing accelerator, 4-18 parts of graphite, 1-4 parts of a modified flexibilizer and 10-30 parts of nano diamond / boron nitride (PDA), a polyurethane single soft and hard segment structure and a high-temperature-resistant oxazolidinone ring in the modified toughening agent cooperate with poly (p-phenylene ether sulfone) resin, so that the toughness is effectively enhanced, and crack propagation is inhibited; boron nitride is modified by nano-diamond, wear resistance is optimized, good electric insulativity and chemical corrosion resistance are given to a matrix, polydopamine can promote a compound to be evenly dispersed in the epoxy resin matrix, wear resistance and adhesive force are improved, and the prepared modified epoxy resin adhesive has good toughening and wear-resisting effects and also has the advantages of being good in toughness, good in toughness and good in wear resistance. And the cable also has excellent high temperature resistance, corrosion resistance and electric insulation effects.

The invention relates to the technical field of anti-icing coatings, in particular to a preparation method of a soft and hard composite anti-icing coating with low icing adhesion. S1.1, weighing the following raw materials in parts by weight: 75 to 90 parts of modified epoxy resin, 10 to 25 parts of acrylic resin, 6 to 8 parts of vinyl-terminated polydimethylsiloxane, 1 to 3 parts of hydrogen-containing silicone oil, 0.5 to 1 part of platinum catalyst, 0.8 to 1.2 parts of emulsifier, 5 to 10 parts of cocoanut active charcoal and 11 to 13 parts of octadecyltriethoxysilane; the component A is prepared from the following components in parts by weight: 0.4 to 0.8 part of dibutyltin dilaurate, 8 to 12 parts of isophorone diamine, 7 to 9 parts of polydimethylsiloxane and 1 to 3 parts of aliphatic polyisocyanate; the modified epoxy resin is prepared from bisphenol A type epoxy resin, o-trifluoromethyl phenylethylamine and 1-aminobenzotriazole; s1.2, preparation of soft particles; s1.3, preparation of hard particles; s1.4, preparation of a coating layer; and the modified epoxy resin is adopted, so that the anti-icing performance, the wear resistance and the durability of the anti-icing coating are improved.

The invention relates to the technical field of metal surface treatment, in particular to a method for achieving titanium metal surface rapid boronizing through electric field induction nanometer assembly in molten salt, titanium dioxide powder, boron powder, inorganic salt and a nanometer particle wrapping agent are evenly mixed, and the molten salt containing nanometer TiB2 is obtained after heating reaction. Graphite and a titanium metal part are put into molten salt containing nano TiB2, the graphite serves as a positive electrode, the titanium metal part serves as a negative electrode, the surface area ratio of the positive electrode to the negative electrode is (3-10): 1, the nano TiB2 in the molten salt is assembled on the surface of the titanium metal part under the action of an electric field to form a boronizing layer, and the boronizing speed is 60-500 microns / h. Compared with an existing high-temperature boronizing technology with active boron atoms as a constituent unit, the high-temperature boronizing technology has the advantages that the boronizing speed can be remarkably increased, the high-temperature boronizing treatment time of titanium metal is shortened, energy is saved, cost is reduced, and meanwhile the negative influence of the high-temperature environment on the organization structure and the mechanical property of a titanium metal part is eliminated.

The invention discloses a matte PC-ABS (polycarbonate-acrylonitrile-butadiene-styrene) material as well as a preparation method and application thereof, and the matte PC-ABS material comprises the following components in parts by weight: 55-45 parts of PC, 35-25 parts of ABS, 0-10 parts of a toughening agent, 0-10 parts of a matte agent, 0.1-0.5 part of an antioxidant and 0.1-1 part of a lubricant. According to the invention, in a PC / ABS material system, the specific matting agent is selectively added, a certain amount of flexibilizer is added, and the flexibilizer, the antioxidant and the lubricant are synergistically matched, so that the PC / ABS has good matting performance, high toughness and color uniformity can be maintained, the application space of the PC-ABS material is widened, and the PC-ABS material has good application prospects. The application of the PC / ABS material in the spraying-free field can be realized, and the cost can be reduced.

The invention provides a lightweight high-strength composite material, and relates to the technical field of composite materials. The light-weight high-strength composite material comprises the following raw materials in parts by weight: 30-50 parts of carbon fibers, 20-40 parts of glass fibers, 5-10 parts of nano silicon dioxide, 20-30 parts of polyamide, 40-60 parts of epoxy resin, 5-10 parts of a curing agent, 2-5 parts of a coupling agent, 3-8 parts of a toughening agent and 1-3 parts of a dispersing agent. The high-strength carbon fibers and glass fibers are adopted, so that the composite material has higher tensile strength and elasticity modulus, the high-strength characteristic of the material is ensured, the structure of the composite material is more compact by introducing nano silicon dioxide, and the durability and stability of the material are improved; secondly, the epoxy resin has good corrosion resistance and can protect the reinforcing material from being corroded, the service life of the composite material is prolonged, the curing agent, the coupling agent, the flexibilizer and the dispersing agent are used, the preparation process of the composite material is more efficient, and meanwhile the comprehensive performance of the material is improved.

The attapulgite (HNTs) is modified by using the diethyl aluminum hypophosphite (ADP), so that the flame retardant property of the HNTs and the compatibility of the HNTs and a polypropylene matrix can be remarkably improved. Through thermal modification, the treated surfaces of the HNTs can effectively adsorb phosphorus elements, and ADP can form phosphate groups on the surfaces of the HNTs to enhance the flame inhibition effect of the HNTs. Due to the adsorption effect, the modified HNTs can form a carbonized layer more quickly at high temperature, flame spreading is prevented, and the flammability of the material in a fire disaster is reduced. The dispersity and compatibility of the modified HNTs in a polypropylene matrix are remarkably improved, the mechanical property and thermal stability of the composite material are enhanced, and the modification cost is effectively reduced by optimizing the modification method. Compared with a traditional high-content inorganic flame retardant, the ADP modified HNTs has the advantages that the flame retardant property is improved, and meanwhile, the requirement for using other expensive flame retardants is reduced, so that the cost of the composite material is effectively reduced.

The invention relates to the technical field of adhesive tapes, and discloses an anti-crack flame-retardant double-sided glass fiber adhesive tape and a preparation method thereof, phosphoric acid compounds generated in the heating or combustion process of an epoxy cardanol-based flame retardant promote dehydration of an adhesive tape matrix to form a protective carbon layer, reduce heat release in the combustion process and improve the fire safety of the adhesive tape; epoxy groups in the structure can react with carboxyl-terminated nitrile rubber, so that the dispersity in epoxy resin is more uniform, a three-dimensional network structure with certain crosslinking density is formed, migration and precipitation are not easy to occur, and the flame-retardant durability is better; the polyepoxy cardanol-based flame retardant has good compatibility with the epoxy resin, and the linear flexible alkyl long chain has good toughness, so that when the adhesive tape is cracked by external force, part of energy can be absorbed to disperse stress and reduce brittleness, and an adhesive tape matrix is endowed with better impact resistance, thereby improving the crack resistance of the adhesive tape.

The invention relates to the technical field of coated cutting tools, and provides a chemical vapor deposition hafnium boride multilayer coated cutting tool and a preparation method thereof.The chemical vapor deposition hafnium boride multilayer coated cutting tool comprises a base body and multiple coatings sequentially arranged on the surface of the base body; the multi-layer coating comprises a first sub-coating HfBN layer and a second sub-coating HfBx layer, and x is larger than or equal to 1.8 and smaller than or equal to 2.2; the first sub-coating HfBN layer is composed of HfB2, HfN and a BN phase, the volume fraction of the HfB2 phase is 60-90%, and the first sub-coating HfBN layer grows in a columnar crystal mode; the second sub-coating HfBx layer grows in a columnar crystal mode, and the grain size of the second sub-coating HfBx layer is larger than that of the first sub-coating HfBN layer. The high-wear-resistance and low-friction-coefficient cutting fluid has high wear resistance, high bonding strength, high adhesion resistance and low friction coefficient, so that the cutting machining requirements of difficult-to-machine materials such as stainless steel, titanium alloy and nickel-based high-temperature alloy are met.

The invention relates to the field of metal processing, and discloses a processing method of high-strength medium alloy carburizing steel, which comprises the following steps of: assembling parts and welding to form a product: aligning all the parts forming the product through corresponding grooves in a contact manner, and assembling all the parts to be welded to form a product prototype; carrying out integral preheating treatment on the to-be-welded parts which are integrally placed and assembled before welding, wherein the preheating temperature is 200-250 DEG C; after the temperature of all the to-be-welded parts is reached, welding the groove contact edges of the two to-be-welded parts which are placed and contacted one by one, so that a welding seam with a certain width is formed between the base materials of the two parts; all to-be-welded parts of the whole product are continuously heated in the welding process, and it is guaranteed that the temperature of the to-be-welded parts is always kept at 200-250 DEG C in the welding process; dehydrogenating the whole product; performing stress relief annealing on the whole product; and integrally tempering the product. According to the scheme, the overall performance of a welding product is effectively improved, and the performance homogenization of welding seams and part base metal is effectively improved.

The invention discloses a polylactic acid composite material with balanced rigidity and toughness and a preparation method thereof, relates to the technical field of polymer composite materials, and solves the problem that the rigidity and toughness of a polylactic acid composite material in the prior art cannot maintain balance. The preparation method comprises the following steps: drying polylactic acid (PLA), a glycidyl methacrylate grafted polyether amide copolymer (Pebax-GMA) and silicon dioxide (SiO2) in a drying oven, weighing the dried PLA, Pebax-GMA and SiO2 in proportion, and carrying out melt blending in an internal mixer to obtain the polylactic acid composite material. According to the invention, PLA is taken as a polymer matrix, SiO2 is taken as a core, Pebax-GMA is taken as a shell, and the shell is wrapped outside the core to form a core-shell structure, so that rigid-tough balance and biodegradable material design of the PLA composite material are realized.

The invention relates to the technical field of insect situation forecasting lamps, in particular to a manufacturing method for improving the strength of a permanent magnetic ferrite wet-pressing magnetic shoe. Comprising the following production steps: 1, weighing iron oxide red with proper granularity, strontium carbonate with proper granularity and an additive, uniformly mixing, and pre-sintering to obtain pre-sintered material magnetic powder; 2, putting the pre-sintered material magnetic powder and a sintering aid into a ball mill, and performing micro-crushing by taking water as a medium; 3, the water content of the micro-crushed slurry is adjusted, the slurry is placed in a magnetic field to be formed, and a magnetic shoe pressed blank is obtained; and 4, sintering the magnetic tile pressed blank in a kiln to obtain a sintered magnetic tile semi-finished product. And 5, grinding the sintered magnetic shoe semi-finished product. According to the method, iron oxide red with the particle size larger than or equal to 1.5 micrometers is adopted for producing the ferrite pre-sintering material, meanwhile, the fine grinding particle size of slurry before wet pressing forming is controlled to be larger than 0.8 micrometer, and then the mechanical strength of the wet pressing magnetic shoe obtained through forming and sintering is obviously improved.

The invention discloses a light and high-performance copper nano carbon aluminum composite wire and a preparation method thereof, the composite wire is of a copper, nano carbon and aluminum concentric bimetal and nano carbon composite structure, the outer layer is oxygen-free copper, the middle interlayer is nano carbon, the core part is aluminum, and the copper accounts for 45%-95% of the volume fraction of the composite wire. Firstly, an oxygen-free copper pipe and an aluminum bar are cleaned and polished; secondly, a nanometer carbon layer is introduced between the copper layer and the aluminum layer through a proper method, then the aluminum bar is put into a pipe, and after plugs are added, the two ends are welded and sealed; and finally, the light and high-performance copper nano carbon-aluminum composite wire is obtained through the processes of drawing, heat treatment and the like. The copper nano carbon-aluminum composite wire has the characteristics of light weight, high strength and high conductivity, and has a certain elastic characteristic while keeping better conductivity. The light and high-performance copper nano carbon aluminum composite wire has a wide application prospect in the fields of aerospace, power electronics, life appliances and the like.

The present invention discloses a low-brittle glass substrate and a preparation process thereof, belonging to the field of glass substrate preparation. The raw material components of the glass substrate include base silicon dioxide, surface amino-treated silicon dioxide, aluminum oxide, boron oxide, modified titanium dioxide, sodium oxide, magnesium oxide, and cerium oxide. The glass substrate of the present invention has low brittleness, and the ratio of Vickers hardness to fracture toughness is used as a brittleness index, the Vickers hardness is 6.65-6.70GPa, and the fracture toughness is 3.54-3.77MPa / m 1 / 2 , the brittleness index is 1.78-1.87.

The invention relates to the technical field of aluminum alloy strip preparation, in particular to an aluminum alloy strip and a preparation method thereof. The invention relates to an aluminum alloy strip which consists of the following elements in percentage: 3.85 percent to 4.85 percent of Cu, 1.14 percent to 1.89 percent of Mg, 0.35 percent to 0.88 percent of Mn, 0.01 percent to 0.48 percent of Fe, 0.01 percent to 0.5 percent of Si, 0.01 percent to 0.25 percent of Zn, 0.01 percent to 0.15 percent of Ti and the balance of Al. The composition proportion of the aluminum alloy strip is optimized, the compactness of the aluminum alloy strip is improved by increasing the adding proportion of Cu, Mg and Mn, gaps in an aluminum alloy strip matrix are filled through mixed adding of Cu, Mg and Mn, the compactness of the material is improved, and the mechanical property of the aluminum alloy is further improved in the alloying process.

The invention discloses a microalloyed high-toughness martensitic stainless steel cutter head as well as a preparation method and a preparation mold thereof. Stainless steel comprises the following components in percentage by weight: 0.3%-0.7% of C, 0.3%-1.0% of Si, 0.5%-1.5% of Mn, 16%-18.5% of Cr, 1%-2% of Ni, 0.3%-0.8% of Mo, 0.1%-0.35% of V, 0.1%-0.25% of Nb, less than or equal to 0.02% of S, less than or equal to 0.02% of P and the balance of Fe. Firstly, raw materials are smelted into molten iron; then adding a deoxidizing agent and precoated sand into the molten iron for molding, and performing sand mold casting and pouring to obtain a cutterhead blank; carrying out heat treatment on the cutter head blank; and finally, shot blasting and polishing are conducted on the cutterhead subjected to heat treatment. The martensitic stainless steel cutterhead has a metallographic structure which takes a martensitic structure as a main structure, takes austenite as an auxiliary structure and dispersedly distributes CrC, VC and NbC particles, the hardness of the martensitic stainless steel cutterhead is 40-45 HRC, the impact toughness of the martensitic stainless steel cutterhead reaches 92-95 J / cm < 2 >, the abrasion resistance of the cutterhead is longer, the service life of the cutterhead is longer, and the abrasion loss of the martensitic stainless steel cutterhead is reduced by 70% compared with a cutterhead without alloy elements.

The invention relates to photo-thermal dual-curing hyperbranched resin, a synthesis method and an ultraviolet curing resin composition for 3D printing. The invention relates to a synthetic method of photo-thermal dual-cured hyperbranched resin. The synthetic method comprises the following steps: adding isocyanate and a catalyst 1 into a reaction kettle at 55-60 DEG C; 2, 2-dimethylolbutyric acid is dissolved in a diluent, then dropwise added and subjected to a heat preservation reaction until an intermediate product A1 is obtained; adding a catalyst 2, and continuously reacting at 65-70 DEG C to obtain an intermediate product A2; and cooling to 55-60 DEG C, dropwise adding a mixture of tert-butylaminoethyl methacrylate and a polymerization inhibitor, and carrying out a heat preservation reaction until the isocyanate value is less than 0.5% to obtain the photo-thermal dual-curing hyperbranched resin, which has the characteristics of low viscosity, high functionality, high activity and reduced volume shrinkage, can be used for preparing an ultraviolet curing resin composition for 3D printing, and has wide application prospects. The material has high rigidity and good toughness at the same time.

The invention relates to a pharmaceutical composition containing vitamin D as well as a preparation method and application of the pharmaceutical composition. The pharmaceutical composition contains the following components: (A) 0.0001-0.5 wt% of vitamin D; (B) an emulsifier; (C) an oil solvent; and (D) 0.1-70 wt% of an adhesive, the emulsifier is selected from at least one of starch sodium octenylsuccinate or beta-cyclodextrin, and the pharmaceutical composition contains 0.001-80 wt% of the emulsifier; the ratio of the use amount of the oil solvent to the use amount of the vitamin D is (1.4-1000): 1. According to the invention, the vitamin D pharmaceutical composition with a wide concentration content range is prepared by selecting proper auxiliary materials and dosage thereof, and the vitamin D pharmaceutical composition has good drug dispersibility and stability and proper disintegration performance.

The invention discloses a method for achieving dissimilar material brazing based on hollow glass bead composite brazing filler metal, and relates to the technical field of dissimilar material brazing. The problems that in the brazing process of traditional dissimilar materials and between base metal and brazing filler metal, due to the fact that the difference of thermal expansion coefficients is large, the strength of a brazed joint is low, reinforced phase particles are added into brazing seams to relieve residual stress, the reinforced phase particles are prone to agglomeration, and the stability of the mechanical property of the joint is affected are solved. The hollow glass beads in the hollow glass bead composite brazing filler metal have low specific surface area, and agglomeration of a reinforced phase in the brazing process is effectively avoided; meanwhile, the hollow glass beads are well combined with the brazing filler metal, defects such as holes do not exist, the spherical structures of the glass beads are well reserved, the coefficient of thermal expansion of brazing seams is remarkably reduced, residual stress generated by a joint during brazing is relieved, and a brazing joint with excellent performance is obtained. The method for achieving dissimilar material brazing based on the hollow glass bead composite brazing filler metal can be obtained.

The invention discloses an additive forging composite forming method for integrally loading local deformation on an aluminum alloy lightweight wheel-shaped component, and relates to an additive forging composite forming method for a wheel-shaped component. The problems that an existing spaceflight aluminum alloy light-weight wheel-shaped component is poor in direct additive forming structure performance, a forging forming die is difficult to fill, the forging process is long, and the die cost is high are solved. The method comprises the following steps: 1, performing additive forming on a main blank; 2, pre-forging and forming the spoke; 3, machining and finishing the pre-forged piece; fourthly, secondary material adding is conducted on the rim; 5, carrying out homogenization heat treatment on the whole wheel; 6, integrally forging and forming the wheel; and 7, wheel direct aging strengthening treatment. The method is used for additive forging composite forming of the aluminum alloy light-weight wheel-shaped component subjected to overall loading and local deformation.

The invention provides a preparation method of a flexible protective layer for lithium metal negative electrode protection, and belongs to the technical field of lithium metal batteries, and the preparation method specifically comprises the following steps: taking a polyarylether high-molecular polymer with a functional group as a main body, introducing metal salt, and spinning to obtain a nanofiber membrane with uniformly distributed central metal ions; a UiO-66 series framework material is grown on the surface of the fiber in situ, so that a flexible protective layer with the UiO-66 series framework material uniformly distributed and stable is obtained. The excellent rigidity of a polyarylether high-molecular polymer is utilized, the flexibility of a protective layer is improved, functional groups are introduced, and strong chemical bonds or electrostatic interaction between the functional groups and central metal ions is utilized, so that the adhesive force in the nucleation and growth process of the UiO-66 series framework material is enhanced, and the performance of the UiO-66 series framework material is improved. When the material is used for lithium metal negative electrode protection, the stability of a solid electrolyte interface can be effectively improved, the cycle life of a lithium battery is prolonged, and the performance consistency of the lithium battery is improved.

The invention relates to a high-strength porcelain glaze and a preparation process, and belongs to the technical field of porcelain glaze preparation, and the porcelain glaze comprises the following main raw materials: potassium feldspar, spodumene, quartz, kaolin, corundum, zirconium oxide, calcium silicate, silicon carbide whisker, a dopamine hydrochloride solution and a dispersant. The components supplement each other, so that a porcelain product using the glaze prepared by the invention has high-strength mechanical properties; besides, beta-type silicon carbide whiskers are selected as a reinforcing material and pretreated with a dopamine hydrochloride solution, so that the prepared glaze has excellent toughness, and when the glaze is applied to the preparation process of porcelain products, the impact resistance and fracture resistance of the porcelain products can be effectively improved; it is ensured that the porcelain product is not prone to being damaged in the follow-up process; and the added Tween80 and triethyl phosphate can synergistically increase the dispersity of the prepared glaze, so that the silicon carbide whiskers are uniformly dispersed, the acting force points are balanced, and the mechanical properties of the glaze are consolidated.

The invention discloses a polymer modified epoxy resin flexibilizer as well as a preparation method and application thereof, and belongs to the technical field of flexibilizers. The toughening agent is prepared from the following components in parts by weight: 80-150 parts of a modified polyurethane aqueous solution, 10-25 parts of a polystyrene / polyamide mixture, 50-80 parts of amino-terminated liquid nitrile rubber, 15-25 parts of an emulsifier, 5-10 parts of a nano silicon dioxide / nano zirconium dioxide mixture, 10-20 parts of phenolphthalein polyaryletherketone, 20-30 parts of a formic acid / acetic acid mixed solution and 20-40 parts of water. According to the toughening agent, the impact toughness and tensile strength of a toughened epoxy resin system are improved, the crosslinking density and brittleness of epoxy resin are reduced, the impact resistance of the resin can be improved, and the epoxy resin system with high strength, high toughness and high heat resistance is obtained.

The invention relates to the technical field of ink, and discloses degradable water-based ink and a preparation method thereof.The degradable water-based ink is characterized in that DCPD petroleum resin and 4-mercapto hydrocinnamic acid are subjected to a mercapto-ene addition reaction, and modified petroleum-based resin is obtained; diallylamine, mercaptopropyltriethoxysilane, 1, 6-dibromohexane, epichlorohydrin and the like are used as raw materials, a sulfydryl-alkene addition reaction, a substitution reaction and a quaternization reaction are sequentially performed to obtain a polysilane epoxy gemini quaternary ammonium salt, an epoxy group in the polysilane epoxy gemini quaternary ammonium salt and a hydroxyl group in polyvinyl alcohol are subjected to a ring-opening reaction, and the polysilane epoxy gemini quaternary ammonium salt is obtained. The degradable water-based ink is prepared by uniformly stirring and mixing modified petroleum-based resin, modified polyvinyl alcohol and polylactic acid to obtain modified petroleum-based resin, uniformly stirring and mixing the modified petroleum-based resin, the modified polyvinyl alcohol, polylactic acid, a defoaming agent, a dispersing agent and the like to obtain the degradable water-based ink, and tests prove that the degradable water-based ink prepared by the preparation method has relatively good antibacterial performance and adhesive force.

The invention relates to the technical field of coatings, and discloses an insulating weather-resistant coating and a preparation method thereof. The preparation method comprises the following steps: uniformly mixing silicon modified epoxy resin, a sulfydryl titanium dioxide / hexagonal boron nitride composite material, o-diallyl bisphenol A epoxy resin, chalcone block polyether sulfone, fluorine modified polyether amine, a solvent and a photoinitiator to obtain the insulating weather-resistant coating, the coating has a photo-thermal dual-curing mechanism, a cross-linked network is easily formed after curing, and the insulating weather-resistant coating has a good weather-resistant effect. The insulation property and the weather resistance are excellent, and the water resistance and the mechanical property are good.

The invention belongs to the technical field of formed foils, and particularly relates to application of a treating fluid as an additive for improving the bending resistance of a formed foil and a preparation method of the bending-resistant formed foil. The treating fluid comprises a water-soluble polymer material, and the water-soluble polymer material is selected from one or more of polyethylene glycol, polyvinyl alcohol, hydroxypropyl methyl cellulose or polyethylene glycol borate; the mass concentration of the water-soluble polymer material in the treating fluid is 0.1-0.7%. The treating fluid can greatly improve the bending resistance of the formed foil and maintain the high specific volume of the formed foil.