427results about How to "Not easy to migrate" patented technology

The invention relates to a method for preparing an uramine-type macromolecule anti-bacterial agent, comprising two steps as follows: A, mixing any one solution of guanidine hcl, Polyhexamethyleneguanidine chloride and polyhexamethylene biguanide hydrochloride with maleic anhydride solution; introducing nitrogen for constant-temperature water bath reaction to obtain functional uramine salt; B, mixing functional uramine salt solution with acrylamide and / or styrene for constant-temperature water bath reaction to obtain ivory-white stringy liquid; depositing soft white solid with solvent for vacuum drying to obtain ivory-white bulk uramine-type copolymer, i.e, uramine-type macromolecule anti-bacterial agent. The uramine-type macromolecule anti-bacterial agent has remarkable effect and simple synthesis process, ensures that the anti-bacterial group is hard to move and the processing thermal stability is excellent through copolymerization on macromolecule long chain. The invention can be widely used in fields of plastic, dope, powder dope, rubber, wood plastic, rubber plastic, spinning, water processing, and the like.

The invention relates to a carbon fiber supported metal catalyst as well as a preparation method and an application thereof. The materials such as graphene nano belt, a multi-arm carbon nano tube and graphene are adopted as graphitization template-based additives, and composite carbon fiber with high graphitization degree and high conductivity is obtained by electrostatic spinning and wet spinning processes and a high-temperature carbonization process, wherein the preferential amount of the template-based additives is 0.5-5% by weight; the high-graphitization composite carbon fiber is used as a carrier of the catalyst, and a metal / carbon nano fiber catalyst for a fuel cell is obtained by reduction; the catalyst has a large initial electrochemical-activity surface area and strong CO toxicity resistance; the current density attenuation is reduced in a 30 minutes of chronoamperometry test, and the catalyst shows higher electrochemical activity, higher current density and better electrochemical stability; and moreover, the catalyst taking the high-graphitization carbon fiber as a carrier shows remarkably high durability.

The invention discloses a method for preparing flame-retardant waterborne polyurethane containing phosphaphenanthrene and / or phenyl phosphate groups. The method is characterized by comprising the following step of reacting dihydric alcohol as a reactant which contains phosphaphenanthrene and / or phenyl phosphate groups and of which the hydroxyl groups are symmetric with diisocyanate, macromolecular dihydric alcohol, anionic or cationic hydrophilic chain extender and the like to synthesize flame-retardant waterborne polyurethane. According to the method, since flame-retardant dihydric alcohol is used as one of chain extenders, flame-retardant dihydric alcohol ca partially or totally substitute other small molecular chain extenders, phosphorus-containing flame-retardant groups are controllable in content and difficult to migrate and are evenly distributed, and the flame-retardant property of waterborne polyurethane can be enduringly retained. According to the structural characteristics of selected flame-retardant dihydric alcohol, by virtue of one and a combination of two or more of flame-retardant groups, phosphorus in the flame-retardant groups can be alone located at a main chain, side chains or simultaneously located at the main chain and the side chains of the polyurethane molecule chain as desired so as to meet the requirements of different flame-retardant properties or other properties such as mechanics, toughness and plasticity.

The invention discloses a preparation method of a fluorescent waterborne polyurethane emulsion based on chromophore in diisocyanate. The preparation method is characterized by comprising the following steps of: enabling monoamine or monohydric alcohol containing fluorescent chromophore to be reacted with isocyanate, or enabling diamine or dihydric alcohol containing the fluorescent chromophore to be reacted with diisocyanate with a symmetric structure to synthesize diisocyanate containing the fluorescent chromophore, and then combining the diisocyanate containing the fluorescent chromophore with common diisocyanate to partially or completely substitute for the common diisocyanate to prepare the fluorescent waterborne polyurethane. According to the preparation method disclosed by the invention, the hard segment content and type of the prepared fluorescent waterborne polyurethane and the content (2-40wt%) of the fluorescent chromophore are controllable by adjusting the types and proportions of the diisocyanate and a chain extender, and the prepared fluorescent waterborne polyurethane has the advantages that the fluorescent chromophore is uniformly distributed and difficult to migrate, the fluorescent intensity is good in durability, and improvement in terms of optical, thermal and certain functional characteristics can be achieved while the fluorescent property is achieved.

The invention discloses fluorescent waterborne polyurethane based on chromophore in dihydric alcohol and a preparation method thereof. The fluorescent waterborne polyurethane is generated by utilizing the fluorescent dihydric alcohol containing the fluorescent chromophore to be reacted with diisocyanate and hydrophilic chain-extender. When the dihydric alcohol containing the fluorescent chromophore forms the fluorescent waterborne polyurethane latex, since the fluorescent chromophore is already chemically keyed into a polyurethane molecular chain, the fluorescent intensity is greatly enhanced, and a typical fluorescent enhanced effect can be displayed. The fluorescent chromophore is uniformly distributed in the polyurethane, the content is controllable, the chromophore is difficult to migrate, the fluorescence can be stored for a long time, the generated fluorescent waterborne polyurethane adopts the water as a solvent, so that safety in transportation and use can be realized, the environment is not polluted, only the low-boiling-point organic solvent such as acetone and butanone is used in the production process, and the solvent is easy to recover.

The invention relates to a large molecular nucleating agent for poly butylenes succinate and a copolyester of the poly butylenes succinate and an application thereof. The large molecular nucleating agent is polyvinyl acetal, and the nucleating performance of the polyvinyl acetal is regulated and controlled by blending the polyvinyl acetal with the poly butylenes succinate and the copolyester of the poly butylenes succinate in an in-site polymerization way or in an adding way in a processing process. The large molecular nucleating agent is non-toxic, odorless, non-corrosive and dispersible. By taking the polyvinyl acetal as the large molecular nucleating agent, the peak crystallization temperatures of the poly butylenes succinate and the copolyester of the poly butylenes succinate can be raised remarkably, crystallization degree and crystallization speed are increased remarkably, a crystallization period is shortened remarkably, and the mechanical property of resin is enhanced remarkably.

The invention discloses a phosphorus-containing and nitrogen-containing expansion type flame-retardant polymer and a preparation method thereof. The preparation method is characterized in that: the phosphorus-containing and nitrogen-containing expansion type flame-retardant polymer is prepared by solution polycondensation reaction or melt polycondensation reaction of diphosphorus acylchloride or diphosphorus acylbromide and a diamine functional group-containing compound. The expansion type flame-retardant polymer comprises phosphorus-containing and nitrogen-containing phosphamide with a structure unit formula shown in the specifications, wherein n is an integer of from 1 to 200; R1 is oxygen or sulphur; and R is alkoxy, alkylthio, aryloxy or arylthio. The product of the invention has high compatibility with a high molecular material matrix, difficult transfer and excellent durability. The preparation method has the advantages of simpleness, easy control, high yield, wide sources of the required raw materials and easy industrialized production. A high polymer with a flame-retardant function can be directly prepared, or the high polymer serving as a flame-retardant additive can be added into various polyesters, polyamide, polyolefin, epoxy resin, polystyrene, high impact polystyrene or acrylonitrile butadiene styrene (ABS) polymer.

The invention discloses a heat-conducting silicone grease composition with low oil separation degree and a preparation method thereof. The heat-conducting silicone grease composition with low oil separation degree includes: by weight, 30-40 parts of vinyl silicone oil, 0.1-1.0 part of hydrogen-containing silicone oil, 0.05-0.1 part of an inhibitor, 0.01-0.05 part of platinum-vinyl siloxane complex, and 100-500 parts of heat-conducting filler. The silicone oil in the heat-conducting silicone grease composition with low oil separation degree is difficult to transfer, and the oil separation degree is less than 0.05% (200 DEG C, 24h, HG / T 2502). The composition has secular stable thermolysis when using in the electron component, and has no harmful effect on the electron component because of the transference of the silicone oil.

The invention provides a multifunctional water-based ink, which comprises the following components by weight percent: 25 to 35 percent of water-soluble acrylic resin, 10 to 20 percent of paint, 3 to 10 percent of silicon oxide, 15 to 25 percent of water, 5 to 15 percent of complex solubilizer, 5 to 10 percent of neutralizing agent, 1 to 3 percent of emulsifier, 0.2 to 1 percent of antifoaming agent, 5 to 9 percent of dispersant, 0.2 to 1 percent of antistatic agent, and 0.1 to 1 percent of anti mildew agent. The multifunctional water-based ink is a novel printing water-based ink which is nontoxic, odorless and low in comprehensive price, and has watertight, anti-mildew and antistatic functions and other functions.

The invention relates to the field of high polymer materials, in particular to an antistatic master batch for polyester films and a preparation method of the antistatic master batch. The invention provides the antistatic master batch and the preparation method thereof so as to overcome the defects that the existing antistatic agent is incompatible with polyester materials and is easily precipitated on the surface of a film so that the antistatic effect of the film is reduced, and large adding quantity is required so that the physical performance of the film is affected. The antistatic master batch provided by the invention comprises 100 portions of polyester chip, 5-70 portions of nanometer antistatic agent and 0.1-5 portions of antioxidant. The preparation method of the antistatic master batch provided by the invention comprises the steps of mixing raw materials by melting and then extruding and granulating. The antistatic master batch provided by the invention has the advantages of good compatibility with the film, difficulty in transfer, small adding quantity in the polyester films and good antistatic effect. The preparation method of the antistatic master batch has the advantages of simple process and easiness in operation.

The invention discloses a sludge treatment method using a solar pyrolysis carbonization technology. The method comprises the following steps: adding the sludge produced by municipal sewage treatment into a pyrolysis carbonization furnace, carrying out a series of reactions, including vaporization, pyrolysis, dehydrogenation, pyrocondensation and carbonation, in a sealed, oxygen-free and non-burning state, wherein a heat source of the pyrolysis carbonization furnace is provided by a solar heat supply system, the reaction condition is high temperature and normal pressure, or high temperature and high pressure, or moderate-high temperature and high pressure, the high temperature is 500-800 DEG C, the moderate-high temperature is 200-400 DEG C and the high pressure is 1-16MPa. With the method provided by the invention, thorough treatment disposal of the sludge in a sewage plant is realized, secondary pollution is avoided, energy utilization rate is high, operation cost is very low, renewable resources is recycled, and reduction, stabilization, reutilization and resource utilization of sludge treatment disposal are really implemented completely.

The invention discloses a multilayer compound wick material. The multilayer compound wick material comprises a non-woven fabric layer, wherein the upper surface and the lower surface of the non-woven fabric layer are respectively scattered with a wicking resin to form an upper wicking resin layer and a lower wicking resin layer, the upper wicking resin layer and the lower wicking resin layer are adhered with an upper wicking paper layer and a lower wicking paper layer formed by wicking paper through a hot melt adhesive respectively, and the non-woven fabric layer, the upper wicking resin layer, the lower wicking resin layer, the upper wicking paper layer and the lower wicking paper layer are compound-molded through roll compacting. The multilayer compound wick material has the advantages of high wicking time, small liquid reverse osmosis amount, large liquid storage capacity, lasting liquid storage time, dry and comfortable surface, and no skin dipping; a technology for producing the multilayer compound wick material has the advantages of simple process and less operation; and the multilayer compound wick material can be widely used as a main wicking material in infant and adult diapers and urine pads, a wicking material of women's sanitary wicking pads, and clinical nursing and health articles.

The invention discloses a polypropylene / polylactic acid / starch composite material which is prepared from the following ingredients by weight percent: 15-30% of polypropylene, 35-50% of polylactic acid, 20-35% of diisocyanate modified starch, 5-10% of vegetable oil multi-element alcohol and 5-10% of compatilizer. According to the polypropylene / polylactic acid / starch composite material, polypropylene, polylactic acid, diisocyanate modified starch, the vegetable oil multi-element alcohol and the compatilizer are combined together to generate better interfacial compatibility, and the ingredients bring the synergistic effect into play, so that the polypropylene / polylactic acid / starch composite material has excellent mechanical properties, can be used for preparing a film, disposable tableware and the like, and belongs to degradable biological materials. The invention further discloses a preparation method of the polypropylene / polylactic acid / starch composite material. The preparation method is simple, easy to control, strong in operability, low in production cost and easy for industrial production.

The invention provides an ultraviolet UV resistant polyethylene glycol terephthalate PET film; an UV absorber for absorption of different bands of ultraviolet is mixed into a PET master batch of the PET film, the UV absorber is a mixture including an UV absorber A and an UV absorber B, the UV absorber A is a benzotriazole UV absorber, the UV absorber B is a hindered amine UV absorber, the weight of the UV absorber A is 50%-80% of the weight of the UV absorber B, and the adding amount of the UV absorber A and the UV absorber B accounts for 2.4%-5.1% of the total weight of a base material layer. The PET film can hinder more than 98% of ultraviolet ray with the wavelength of 290nm-400nm, and according to a method, the UV absorber and the PET master batch are mixed for heating and melting, and then the PET film is formed by film pulling, so that the problem that the visual effect is affected for the reason that a PET film in the prior art has color can be solved.

The invention discloses a graphene conductive coating and a preparation method thereof. The graphene conductive coating is prepared from the following components in parts by weight: 15 to 30 parts ofgraphene, 5 to 20 parts of carbon nano pipes, 2 to 10 parts of conductive carbon black, 10 to 30 parts of matrix resin, 2 to 5 parts of dispersing agents, 2 to 5 parts of binding agents, 2 to 5 partsof adhesion promoters, 1 to 5 parts of flatting agents, 0.5 to 1.0 part of a photoinitiator and 30 to 50 parts of organic solvents. According to the graphene conductive coating and the preparation method thereof, the graphene and the carbon nano pipes firstly form a graphene / carbon nano pipe composite material, the graphene and the carbon nano pipes can be mixed to be evener under the effect of critical fluid, the Van Der Waals' force among layers of the graphene is damaged through pressure released instantaneously, and thus the graphene is not easy to agglomerate.

The invention discloses a multi-channel three-dimensional microfluidic paper chip and a preparation method thereof. The multi-channel three-dimensional microfluidic paper chip uses a piece of upper layer filter paper A and a piece of lower layer filter paper B printed with different microfluidic channels to form a three-dimensional microfluidic channel system through corresponding overlapping. Themulti-channel microfluidic paper chip provided by the invention realizes the simultaneous fast and sensitive determination of different substances, and can be used in the fields of biochemical analysis, immunoassay, sensors, instant detection device study and the like.

The present invention relates to a thermal stability improved polyformaldehyde resin composition and a preparation method thereof. The preparation method comprises: adding 91.8-96% by weight of a polyformaldehyde resi, 0.6-2% by weight of a hyperbranched polyester, 0.2-0.6% by weight of a main antioxidant, 0.1-0.3% by weight of an secondary antioxidant, 0.1-0.3% by weight of a formic acid absorber, and 3-5% by weight of a lubricant to a high-speed mixer to mix, and adopting an exhaust type co-rotating twin screw extruder to carry out melt mixing and extrusion granulation to prepare the thermal stability improved polyformaldehyde resin composition, wherein a rotation speed of the screw is 210-280 rotation / min, and a material cylinder temperature is 160-190 DEG C. Compared with the composition in the prior art, the composition of the present invention has the following characteristics that: formation of excessive mold scale and formaldehyde gas during a mold molding processing process can be avoided, product discoloration can be inhibited, and excellent thermal stability is provided.

The invention discloses a polymerization type phosphorus-containing flame retardant as well as a preparation method and application thereof as an epoxy resin flame retardant, relates to a hydrolysis-resisting phosphorus-containing flame retardant and a preparation method thereof, and solves the problems that a conventional phosphorus-containing flame retardant is low in thermal stability, easy to hydrolyte and hard to process. The structural formula of the phosphorus-containing flame retardant is as shown in the specification. The preparation method comprises the following steps: by taking phosphoric acid or sulfuric acid as a catalyst, adding a trisphosphine oxide solution or a tertphosphine oxide solution, a reaction solvent and an additive into a reaction container, adding a melamine or amine compound at the room temperature, adjusting the pH value, heating at a certain stirring speed, reacting at certain temperature, performing backflow reaction, cooling to be the room temperature, sequentially performing suction filtration, washing in water and drying, thereby obtaining white powder solid, that is, the polymerization type phosphorus-containing flame retardant. The polymerized type phosphorus-containing flame retardant can be used as the epoxy resin flame retardant which is added into epoxy resin.

The invention relates to an intumescent flame retardant polypropylene composite material and a preparation method thereof. The preparation method is characterized by comprising the following steps: adding 60-85% of polypropylene and 0-5% of a lubricating agent into a high-speed mixer for dispersing at a high speed for 2-5 minutes so as to obtain a mixture; mixing the mixture with 15-35% of an intumescent flame retardant and 0.1-0.5% of an antioxidant for 5-20 minutes so as to obtain an intumescent flame retardant mixture; and performing extrusion pelletizing on the intumescent flame retardant mixture by using a twin-screw extruder or uniformly mixing by using a double-roller mixer, thereby obtaining the intumescent flame retardant polypropylene composite material. The intumescent flame retardant polypropylene composite material has the advantages that the heat resistance and water resistance of the flame retardant are improved; due to the structural design and adjustment of a char-forming agent, the char-forming agent has a certain beta-crystal nucleation effect, so that a certain beta crystal can be formed by the polypropylene composite material. Therefore, the impact property and bending property of the composite material are improved, and the composite material is low in water solubility and difficult to migrate.

The invention relates to a colored glass prepared by substances with chromate residue, which is characterized in that the material compositions and weight percentage include 1-70 percent of the chromate residue, quartz sand with SiO2 content no less than 90 percent as well as one or a plurality of quartzite, silica sand, sand stone of 10-56 percent, one or a plurality of boric acid, borax, ascharite, bechilite of 5-30 percent and one or a plurality of soda caustic soda and mirabilite of 2-15 percent, etc; the material compositions and weight percentage further include coloring regulator and nucleating agent. The preparation method of the colored glass comprises preparing batch, melting the glass; the method further comprises processing crystallization, quenching, coloring and diluting as well as the glass forming, annealing and so on. By adopting the method, a plurality of types of glass such as aventurine glass and so on can be prepared and the glass can be directly used as the colored glass of building decorative glass; the quenching glass can be also used as pigment for producing glass nesting, common green glass, mosaic, ceramic glaze and so on, thus solving the problem of the environmental pollution cause by Cr<6 plus> in the chromate residue.

The invention discloses a ferrocene-DOPO biradical polyester type flame retarding and smoke suppressing agent and a preparation method of the ferrocene-DOPO biradical polyester type flame retarding and smoke suppressing agent. The preparation method of the polymer is as follows: putting 10-(2,5-dyhydroxyl phenyl)-9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide into a reactor, adding a solvent,stirring for 5-10 minutes, adding an acid-binding agent; taking R1,R2'-ferrocene oxalyl chloride, adding the solvent, mixing, adding into the reactor dropwise, thermally insulating, stirring and reacting for 1-15 hours at the temperature of 0-50 DEG C under the protection of nitrogen after finishing adding dropwise; pouring a liquid obtained after the reaction into a precipitator while stirring, wherein the volume of the precipitator is 5-10 times that of the liquid, precipitating a yellow solid, carrying out suction filtration, washing a filter cake by using the precipitator, and drying to obtain the ferrocene-DOPO biradical polyester type flame retarding and smoke suppressing agent. The ferrocene-DOPO biradical polyester type flame retarding and smoke suppressing agent can be used to retard flame and suppress smoke of high polymer materials like polyolefins and epoxy resins.

The invention discloses an artificial leather manufacturing method adopting TPU (thermoplastic urethane) to plasticize PVC (polyvinyl chloride) and reducing use of a plasticizer. According to the method, 80-90 parts of PVC powder, 3-5 parts of a stabilizer, 50-60 parts of the plasticizer, 10-20 parts of TPU, 2-3 parts of a foaming agent, 5-10 parts of filler and an appropriate quantity of a colorant are mixed uniformly, and an artificial leather product is prepared with a traditional calendering process. PVC and TPU are all polar macromolecules and have good compatibility; the TPU macromolecules contain both soft segments and hard segments, the elasticity modulus of the TPU macromolecules is between that of plastics and that of rubber, the TPU macromolecules can still keep better elasticity in a relatively wide temperature range and further have good performance of low-temperature resistance, solvent resistance, heat resistance and the like; when the TPU is used for plasticizing PVC, the glass-transition temperature of a PVC / TPU blended material is reduced remarkably, the heat resistance is improved, and 30%-40% of the use quantity of a micromolecular plasticizer can be reduced; TPU adopts the macromolecules, is not easy to transfer and has lasting plasticizing effect; besides, polar groups such as epoxy groups, ester bonds and the like in the plasticizer and urethane groups in the TPU macromolecules can form a hydrogen bond or dipole interaction, and accordingly, the transference resistance of the plasticizer is further improved.

The invention discloses a carbon-carrier precious metal catalyst for fuel cell, a preparation method thereof and an application thereof. The catalyst uses band-shaped nanometer carbon as the carrier, sodium borohydride, methanol or glycol as a reducing agent, and co-reduces the band-shaped nanometer carbon and the precious metal acid or the precious metal salts to obtain the precious metal / band-shaped nanometer carbon catalyst for the fuel cell, preferably a platinum loading amount being 10-60 wt %. The catalyst is high in initial electrochemical active surface area, relatively small in current density attenuation during a chronoamperometry test, and relatively high in current density during an electrochemical timing current test compared with that of present catalysts, and shows relatively high electrochemical activity, relatively high current density and relatively excellent electrochemical stability.

The invention discloses a hybrid filler load type anti-aging agent, and a preparation method and application thereof. The method comprises the following steps that (1) hybrid fillers and a silane coupling agent are mixed; stirring reaction is performed for 10 to 24h at 70 to 90 DEG C; after drying, an intermediate product is obtained; (2) the intermediate product in the step (1) and N-phenyl p-phenylenediamine (RT) are mixed; stirring reaction is performed for 8 to 12h at 50 to 70 DEG C; after drying, the hybrid filler load type anti-aging agent is obtained. The hybrid filler load type anti-aging agent can obviously reduce the volatile migration phenomenon of micromolecule anti-aging agents in a rubber base body, has a better anti-aging effect than that of an ordinary ammonia anti-aging agent 4010NA, and has wide application prospects in the field of rubber.

The invention discloses a preparation method of fluorescent waterborne polyurethane acrylate. According to the preparation method, a free radical copolymerization reaction between an acrylate small-molecule fluorescent compound and a polyurethane prepolymer which is blocked by a blocking agent containing double bonds and is terminated with an NCO group is carried out such that a fluorescent chromophore is bonded to a polyurethane molecular chain in the form of a chemical bond. Then, the fluorescent waterborne polyurethane acrylate is obtained. According to the fluorescent waterborne polyurethane acrylate prepared by the above method, fluorophore addition can be regulated and controlled according to needs. In addition, fluorophore is not easy to migrate, and the fluorescence property is maintained enduringly. As the fluorophore generally contains a rigid structure with high steric hindrance, the fluorophore also has an effect of regulating optical property, thermal property, mechanical property and the like of waterborne polyurethane and some functional characteristics during copolymerization with polyurethane while the fluorescent waterborne polyurethane is obtained.

The invention discloses a method for preparing a white fluorescent water-based polyurethane coating. The method is characterized by comprising the following steps: preparing red fluorescence diglycol and blue fluorescence diglycol, and mixing the red fluorescence diglycol and blue fluorescence diglycol with green fluorescence diamine so as to obtain white fluorescent powder; combining the fluorescent powder with the diglycol, partially or totally replacing a dihydric alcohol chain extender used in a water-based polyurethane synthetic process, and reacting with diisocyanate, macromolecule diglycol and a hydrophilic chain extender so as to obtain white fluorescent water-based polyurethane emulsion; and sequentially adding an antifoaming agent, a flatting agent, a thickening agent, an ultraviolet light absorber and deionized water into the emulsion, and complexing in a scuffing cylinder, thereby obtaining the white fluorescent water-based polyurethane coating. According to the method disclosed by the invention, due to the design and combination of red-green-blue three primary color fluorophores, the prepared white fluorescent water-based polyurethane coating is capable of emitting white fluorescence, the chromophore is difficult to migrate, the fluorescence persistence is high, and the color fastness is high.

The invention discloses a poly (methyl) acrylic acid ferrocene acyloxy ethyl ester burning-rate accelerator and a propellant containing the burning-rate accelerator and a preparation method thereof, wherein the molecular weight (Mw) of the poly (methyl) acrylic acid ferrocene acyloxy ethyl ester burning-rate accelerator is 6000 to 16000, and the structural formula is shown as follow, wherein R1 is -H or CH3; and the propellant comprises the following components by the mass percent: 70 to 80 percent of oxidant, 12 to 25 percent of binder, 1 to 3 percent of poly (methyl) acrylic acid ferrocene acyloxy ethyl ester burning-rate accelerator and 4 to 6 percent of curing agent. The invention has the advantages that the burning-rate accelerator has simple structure, high molecular weight and stable performance and can distinctly reduce decomposition temperature of ammonium perchlorate, and the effect is better than that of normal ferrocene burning-rate accelerator; and the poly (methyl) acrylic acid ferrocene acyloxy ethyl ester burning-rate accelerator is not apt to be transferred during storage in the propellant so as to lead the preparation process of the propellant to be safer; and the burning-rate catalysis effect of the propellant adopting the poly (methyl) acrylic acid ferrocene acyloxy ethyl ester burning-rate accelerator is better.

The invention discloses a room temperature solidified expansion type fire retardant coating and method for preparing the same, which is composed of components A, B and C. Component A is epoxy resin dispersion. Component B is waterborne curing agent dispersion. Component C is the mixture of flame retardant and filler. Component A comprises, by weight, 15-25% of epoxy resin and 60-70% of dispersant. The above three components are mixed up in a proportion of 1:(0.5-0.7):(0.7-1).Epoxy resin is used as the film-forming substance, while expandable graphite and perlite, which are physical expanding flame retardants, are used as flame retardants and cement as the filler. The above coating has the advantages of obvious fireproof effect, good bond property with the base material and few harmful substances or smoke generated when exposed to fire or in a strong thermal event. In addition, flame retardants can not easily migrate from the coating.

The invention discloses a preparation method for double-emission waterborne polyurethane capable of emitting fluorescence and phosphorescence synchronously. The preparation method is characterized in that a common small-molecular dihydric alcohol chain extender is replaced with part or all of double-emission dihydric alcohol with a fluorescence and phosphorescence double-emission chromophore, waterborne polyurethane is synthesized, and prepared waterborne polyurethane can perform a fluorescence and phosphorescence double-emission function. Waterborne polyurethane, prepared according to the preparation method, can emit fluorescence and phosphorescence synchronously, is low in cost, easy to process, low in possibility of migration of the double-emission chromophore, and lasting and stable in light emitting performance, and has no harm to environment, the content of the fluorescence and phosphorescence double-emission chromophore in a polyurethane molecular chain can be controlled to be 1-20 wt%, the quantum yield of the fluorescence and phosphorescence double-emission chromophore can reach 81%, and double-emission waterborne polyurethane has a potential application value in the field of organic electroluminesence display, and can be used for further developing a detection device for oxygen and organic solvents.