581 results about "Cinnamic acid" patented technology

The invention relates to the technical field of food packaging materials, and discloses a high-barrier recyclable eleven-layer co-extrusion film for food packaging and a preparation process thereof, and the preparation process comprises the following steps: preparing a compound which contains a hindered phenol group and a cinnamate group and has a compatible function; the preparation method comprises the following steps: compounding a compound which contains a hindered phenol group and a cinnamate group and has a compatible function with maleic anhydride grafted polyethylene resin PE-g-MAH to prepare a compatible component; the high-barrier recyclable eleven-layer co-extrusion film for food packaging is prepared by taking PA6, BVOH and PE as raw materials, improving the compatibility of BVOH and PE by utilizing compatible components, carrying out hydrolysis reaction on water-soluble BVOH to realize interlayer separation of PE and PA and adopting an eleven-layer co-extrusion blow molding film forming process. And the sanitary performance meets the national standard requirement, and the product is easy to recycle and conforms to the environment-friendly trend.

The invention belongs to the technical field of microorganisms, and particularly relates to pseudomonas monteilii BDLZ-3 and application thereof in relieving continuous cropping obstacles of crops. The invention discloses a strain of pseudomonas monteilii BDLZ-3, the preservation number of which is CGMCC (China General Microbiological Culture Collection Center) No.34349. The pseudomonas monteilii BDLZ-3 is separated and screened from the nature for the first time, phenolic acid autotoxic substances generated in the ginseng continuous cropping obstacle process can be efficiently degraded, the degradation rate of benzoic acid can reach 95.36%, various phenolic acids such as vanillic acid, cinnamic acid, palmitic acid and gallic acid can be effectively degraded, and the degradation spectrum is wide; when the pseudomonas monteilii BDLZ-3 is applied in a field, the content of benzoic acid in soil can be effectively reduced, meanwhile, the occurrence of ginseng root diseases can be controlled to a certain extent, the prevention and treatment effect reaches 41.23%, the growth indexes such as root length and root thickness are remarkably improved, and the yield increasing effect is achieved.

The invention belongs to the technical field of medicines, and particularly relates to a pirfenidone eutectic crystal and a preparation method, a pharmaceutical composition and application thereof. The pirfenidone eutectic provided by the invention is prepared from pirfenidone and a eutectic ligand, and the eutectic ligand is selected from one of pimelic acid, cinnamic acid and saccharin. The pirfenidone eutectic crystal provided by the invention not only can improve the acute pancreatitis relieving effect of pirfenidone, but also can improve the safety of pirfenidone.

The invention provides a composite water dispersible granule containing emamectin benzoate and a preparation process thereof, and belongs to the technical field of pesticide preparation. The preparation process comprises the following steps: preparing a modified carrier material; preparing a light controlled release carrier material; and preparing the composite water dispersible granule. The light controlled-release carrier material is prepared by taking bentonite as a raw material, and when the carrier material is used for loading pesticide raw material components, pesticide raw material molecules can be slowly released from pores and surfaces of the bentonite, so that the release speed of the pesticide is effectively controlled, the action time of the pesticide is prolonged, and the pesticide effect is improved. In addition, methyl cinnamate is grafted on the surface of a modified carrier material to prepare a light controlled-release carrier material, and after the light controlled-release carrier material is loaded with an insecticide raw medicine, the release rate of the insecticide raw medicine is reduced under the irradiation of strong light, so that the situation that the pesticide effect is reduced due to light degradation after the insecticide liquid is released can be avoided.

The invention relates to a recombinant thallus, a construction method of the recombinant thallus and application of the recombinant thallus in production of xanthoxylin WGX-50, and relates to the technical field of bioengineering. A recombinant plasmid containing a phenylalanine ammonialyase gene PAL with a nucleotide sequence as shown in SEQ ID NO.2 and a cinnamic acid coenzyme A ligase gene CNL with a nucleotide sequence as shown in SEQ ID NO.1 and a recombinant plasmid containing a tyramine N-hydroxycinnamoyl transferase gene THT with a nucleotide sequence as shown in SEQ ID NO.3 are introduced into the recombinant plasmid. A phenylalanine ammonialyase gene PAL, a cinnamic acid coenzyme A ligase gene CNL and a tyramine N-hydroxycinnamoyl transferase gene THT are overexpressed in escherichia coli, so that a biological synthesis path of xanthoxylin WGX-50 is formed by taking 3, 4-dioxomethyl phenylethylamine as a substrate for the first time, a foundation is laid for large-scale industrial production, and the method has a wide application prospect. The method has important economic value and social benefit.

The invention provides an environment-friendly PUR hot melt adhesive with excellent temperature resistance as well as a preparation method and application thereof, and belongs to the technical field of adhesives. The environment-friendly PUR hot melt adhesive is prepared from the following raw materials in parts by mass: 50 to 65 parts of polyester polyol, 10 to 20 parts of polyether polyol, 15 to 30 parts of isocyanate, 5 to 10 parts of modified isocyanate, 5 to 10 parts of chain extender and 3 to 5 parts of anti-aging additive, wherein the polyester polyol is formed by carrying out dehydration polycondensation on polybasic acid and polyol through a vacuum melting method, and the polybasic acid comprises binary acid, cinnamic acid, chlorogenic acid and tannic acid according to the mass ratio of (3-5): (0.5-0.8): (1.2-1.6): 1; the anti-aging auxiliary agent is a nano inorganic oxide containing a maleimide group; the modified isocyanate is a mixture obtained by reacting polyisocyanate, sulfamic acid, hydroxycarboxylic acid and tertiary amine. The PUR hot melt adhesive prepared by the invention has excellent thermal stability, and the cohesiveness of the PUR hot melt adhesive can be kept basically unchanged in a long-term high-temperature environment and a thermal cycle environment.

The invention relates to a preparation method of a graphene type flame-retardant, light-resistant and wear-resistant waterborne polyurethane coating, which comprises the following steps: adding polyol and isocyanate into a flask, dropwise adding dibutyltin dilaurate, and reacting for 1-2 hours; adding polyethylene glycol into the prepolymer, and reacting for 1-2 hours to obtain the prepolymer; then adding 1, 4-butanediol BDO and a disulfide compound, carrying out a reaction at 70-80 DEG C for 1-2 h, then adding methoxypolyethylene glycol (MPEG) into the prepolymer, and carrying out a reaction at 70 DEG C for 1-2 h; then adding an ultraviolet absorbent, a coumarin derivative, hydroxypropyl propargyl ether and a nitrogen-phosphorus-silicon flame retardant, and carrying out a reaction at 70-80 DEG C for 1-1.5 h; adding ethylene diamine, carrying out secondary chain extension, carrying out stirring reaction at 60-70 DEG C for 0.5-1 hour, adding water, keeping the stirring speed at 2000 r / min, and carrying out reaction for 0.5-1 hour; the graphene type flame-retardant, light-resistant and wear-resistant waterborne polyurethane coating is obtained; the obtained polyurethane has the advantages of favorable flame retardancy, favorable light resistance and favorable wear resistance.

The invention belongs to the technical field of oil exploitation, and particularly relates to a high-molecular polymer thickening agent as well as a synthesis method and application thereof. The synthesis method comprises the following steps: sequentially adding 4-trifluoromethyl cinnamic acid, deionized water, hydroxyethyl cellulose, TX-10 and monopotassium phosphate into a reactor, uniformly stirring, and adjusting the pH value to 7-8; 4, 4 '-diaminostilbene-2, 2'-disulfonic acid, 2-allyloxymethyl-2-methylolpropane-1, 3-diol and deionized water are added into a second reactor and stirred to be uniform, and the pH is adjusted to be 7-8; adding an initiator into a high-position dropwise adding tank, dropwise adding the initiator into the first reactor, continuously stirring, adding the mixed liquid in the second reactor when the viscosity begins to rise, continuously stirring, and then heating and carrying out heat preservation reaction to obtain viscous liquid; and drying and granulating to obtain the product thickening agent. The invention has the advantages of simple synthesis, high apparent viscosity, strong shear resistance, and good salt resistance and hardness resistance.

The invention discloses a quick-dry anti-ultraviolet sportswear fabric which comprises nylon fibers, polyester fibers and spandex fibers, the sportswear fabric is formed by weaving the nylon fibers, the polyester fibers and the spandex fibers, and the sportswear fabric is treated by an anti-ultraviolet agent. The anti-ultraviolet agent is prepared from ethanol, water, an inorganic ultraviolet screening agent, isoamyl 4-methoxycinnamate and coco fatty acid diethanol amide; according to the invention, the cloth is washed with water and soaked in the citric acid solution, then the anti-ultraviolet agent is evaporated into steam, the steam permeates into the cloth, the pressure is repeatedly and circularly increased and reduced, and the steam of the anti-ultraviolet agent is pressed into the cloth by increasing the pressure; air and an anti-ultraviolet agent poor in stability in the fabric are separated out through pressure reduction, and then permeation is conducted again through pressurization, so that the permeability and stability of the anti-ultraviolet agent are improved, the fabric has excellent washing fastness, and the anti-ultraviolet performance of the fabric is basically kept inconvenient after long-term use.

The invention discloses streptomyces bulbus as well as a multifunctional fungicide and application thereof. According to the invention, firstly, a strain of Streptomyces tauricus zhanshen-LZ-12 is separated and screened from straw returning soil, and the preservation number of the strain is CGMCC (China General Microbiological Culture Collection Center) No.34456. The invention also discloses a preparation method of the Streptomyces tauricus zhanshen-LZ-12. The strain has the functions of degrading cellulose, decomposing protein, fixing nitrogen, resisting salt, degrading phenolic acid autotoxic substances (benzoic acid, p-hydroxybenzoic acid and cinnamic acid) and the like. Bacterial powder obtained after fermentation of the bacterial strain is uniformly mixed with bacillus bacterial powder to obtain the multifunctional bacterial agent, and when straw returning or composting is carried out, the multifunctional bacterial agent is adopted, straw decomposition can be accelerated, soil ecology can be improved, crop growth can be promoted, and the stress resistance of crops can be enhanced.

The invention discloses a modified polypropylene HPPM square electric power corrugated pipe, belongs to the technical field of corrugated pipes, and aims to solve the problem that the polypropylene square electric power corrugated pipe cannot have toughness and excellent mechanical performance when being prepared in the prior art. The adopted nucleating agent has the technical problems of low nucleating efficiency and complex preparation process; the composite material comprises block co-polypropylene, a modified nucleating agent, alkaline glass fibers and related auxiliaries, maleimide, propylene and allyl cinnamate serve as monomers, the block co-polypropylene with high mechanical performance and high toughness is prepared, ethylene diamine and hexachlorocyclotriphosphazene are subjected to nucleophilic substitution, and the composite material is obtained. The preparation method comprises the following steps: preparing polydiamino-containing polyamine phosphazene by using a one-step method, reacting the polyamine phosphazene with phthalic anhydride to obtain a modified nucleating agent with a large number of amide carboxylic acid nucleation centers, and has the advantages of high nucleation efficiency and simplified preparation process.

The invention discloses fresh and wet sweet potato vermicelli and a preparation method thereof, the fresh and wet sweet potato vermicelli comprises the processing raw materials of sweet potato starch, domestic drinking water, an acidity regulator and a fresh-keeping preservative, the usage amount of the fresh-keeping preservative is 0.05-0.6% of the weight of the starch raw material, and the preparation method comprises the following steps: weighing the raw materials of the fresh and wet vermicelli, preparing starchy sauce, preparing dough, mixing slurry, curing and forming, and the like, thereby obtaining the fresh and wet sweet potato vermicelli. Aging the cured vermicelli for 1-2.5 hours in an environment of 10-1 DEG C, so as to obtain aged vermicelli; and cutting the aged vermicelli into strips, performing vacuum packaging, and performing pasteurization to obtain the product. In the preparation process of the fresh and wet sweet potato vermicelli, potassium cinnamate, thymol and aloe extract are added as fresh-keeping preservatives. The method overcomes the problem that chemical preservatives such as sodium dehydroacetate cannot be added into the fresh and wet sweet potato vermicelli, and prolongs the shelf life of the fresh and wet sweet potato vermicelli.

The invention provides a silicon-based flame-retardant waterborne polyurethane microfiber and a preparation method thereof, and belongs to the technical field of high polymer materials. The preparation method comprises the following steps: hydrolyzing a silicon source under an alkaline condition to obtain silicon dioxide nanospheres, carrying out silane modification on the silicon dioxide nanospheres, and carrying out coupling modification on the silicon dioxide nanospheres by using different phosphorus-containing compounds to obtain the phosphorus-hybridized silicon-based flame retardant. The preparation method comprises the following steps: preparing a silicon-based flame retardant, mixing the silicon-based flame retardant with isophorone diisocyanate, polytetrahydrofuran glycol, dibutyltin dilaurate, dimethylolpropionic acid and the silicon-based flame retardant to obtain a prepolymer, emulsifying the prepolymer in a dispersant to obtain a silicon-based flame retardant / polyurethane emulsion, adding a certain amount of a thickener, an antifoaming agent, a leveling agent, color paste and the like, and uniformly stirring to obtain the silicon-based flame retardant / polyurethane emulsion. And adhering a coating to base cloth, curing and stripping to obtain the silicon-based flame-retardant waterborne polyurethane microfiber. The silicon-based flame-retardant waterborne polyurethane disclosed by the invention achieves excellent mechanical and flame-retardant properties, and also has excellent smoke suppression and low toxicity effects.

The invention belongs to the technical field of forest chemical industry and natural perfume extraction and separation, and particularly discloses a superheated steam distillation separation and recovery method for perfume components in cinnamon oil rectifying still residues. The method comprises the following steps: processing the cinnamon oil rectifying still residues by adopting a steam distillation method taking normal-pressure superheated steam as a desorption medium, carrying out condensation cooling and phase separation on distilled oil-water mixed gas, and collecting oily liquid or crystalline solid containing cinnamon spice components, and carrying out one or more physical isolation methods such as freezing crystallization, vacuum fractionation or rectification, recrystallization and the like to obtain natural cinnamon monomer spices such as o-methoxycinnamaldehyde, o-methoxycinnamic acid, phenethyl alcohol and the like. The method has the advantages of low equipment investment, simple and feasible operation, low production cost, clean and pollution-free process, good operation safety, high industrial application feasibility and the like.

The invention relates to a weather-resistant coating for a photovoltaic module and a preparation method of the weather-resistant coating, 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 modified resin, 5-25 parts of a curing agent, 10-30 parts of a composite filler, 5-10 parts of an auxiliary agent, 5-40 parts of a solvent and 0.5-3 parts of a plasticizer, a benzotriazole structure and a benzophenone group in the modified resin cooperate to enhance ultraviolet resistance and prolong service life, and introduced 1H, 1H-perfluoropropyl methacrylate is short in C-F bond and high in bond energy, so that moisture resistance and corrosion resistance are improved; long-carbon-chain silane in the composite filler modifies nano-zinc oxide, so that super-hydrophobicity is realized, cracks on a resin curing surface are filled, and corrosion resistance and wear resistance are enhanced; in addition, cinnamic acid endows the coating with excellent antibacterial ability, and the weather-resistant coating for the photovoltaic module prepared by the invention not only has good ultraviolet resistance, high temperature resistance and corrosion resistance, but also has excellent water-resistant and antibacterial effects.

The invention relates to the technical field of power cables, and provides a high-toughness corrosion-resistant power cable which comprises a conductor, and an insulating layer, an armor layer and a sheath layer are sequentially arranged on the outer side of the conductor. The sheath layer comprises the following raw materials in parts by weight: 35-45 parts of polyethylene, 35-45 parts of methyl vinyl silicone rubber, 35-48 parts of nitrile rubber, 6-8 parts of a plasticizer, 20-30 parts of filler, 1-2 parts of an antioxidant, 1-2 parts of a vulcanizing agent and 10-13 parts of a functional aid; the functional additive is prepared from the following raw materials: zinc oxide, cinnamic acid and cyclohexenecarboxylic acid. According to the technical scheme, the problem of poor toughness of the sheath layer of the corrosion-resistant power cable in the prior art is solved.

The invention provides a composite catalyst and a preparation method thereof, and a synthesis method of a p-methoxy cinnamate compound. The composite catalyst comprises a carrier modified by a modifier, and a metal salt and a choline substance loaded on the carrier. In the presence of the composite catalyst provided by the invention, a Claison-Schmidt condensation reaction of an aromatic aldehyde compound and an acetate compound is catalyzed to obtain the p-methoxycinnamate. The composite catalyst provided by the invention has the advantages of high reaction activity and selectivity, stable catalyst structure, difficult loss of active components, realization of cyclic application of the catalyst, no need of frequent replacement of the catalyst, simple operation, facilitation of continuous industrial production, substantial increase of the equipment utilization rate, and realization of industrial production. By using the composite catalyst provided by the invention, the p-methoxy cinnamate compound can be prepared under relatively mild reaction conditions, and the composite catalyst has no corrosion to equipment, does not generate waste water and waste salt, and is green and environment-friendly.

The invention provides a preparation method of a metal organic coordination polymer mediated silver nanowire. The preparation method comprises the following steps: respectively preparing a supramolecular assembly agent, a high-molecular polymer protective agent, halide salt and a soluble silver salt solution; the supramolecular assembly agent is at least one of cinnamic acid, p-coumaric acid, caffeic acid, tannin and the like; halide salt and a supramolecular assembly agent are sequentially added into the soluble silver salt solution to form a silver ion-supramolecular assembly agent coordination polymer solution; adding a high-molecular polymer protective agent into the silver ion-supramolecular assembly agent coordination polymer solution, stirring, and reacting in a dark place at-20 to 80 DEG C for 0.1 to 10 hours; and after the reaction is completed, centrifuging, washing, drying in vacuum and re-dispersing to obtain the silver nanowire. According to the technical scheme, the prepared silver nanowire is superfine in diameter, the end has a curled shape, the interior contains defects, the reaction can be carried out in water, the productivity is high and is larger than 80 g / L, and the technology is simple and more environmentally friendly.

Provided is a beverage that enables improvement of an unpleasant sensation of sweetness that remains on the tongue and / or a reduction in the sensation of freshness. According to one embodiment of the present invention, provided is a beverage that contains: cinnamic acid, a cinnamic acid derivative, or a combination thereof; an acidifier; and a sweetener; wherein the content of at least one of the cinnamic acid, the cinnamic acid derivative, or a combination thereof is 0.01-4 mg / 100 g, and the acidity in terms of citric acid is 0.65-2.5 g / 100 g.

The invention relates to a polishing pad for polishing a silicon carbide wafer as well as a preparation method and application of the polishing pad. The polishing pad is prepared from the following raw materials in parts by weight: 10 to 15 parts of silicone oil, 25 to 35 parts of polyurethane prepolymer, 1 to 3 parts of anionic chain extender, 0.001 to 0.004 part of first catalyst and 2 to 5 parts of modified organic silicon microspheres. The chitosan quaternary ammonium salt and the cinnamic acid are adopted to modify the epoxy group organic silicon elastomer powder, and the modified organic silicon microspheres with high rigidity and high interface bonding force are prepared, so that the wear resistance and the storage modulus of the polishing pad are remarkably improved, and the requirement for high-precision polishing of silicon carbide wafers is met.

The invention relates to the technical field of oil fields, and discloses an acid liquor thickening agent and a preparation method thereof.The preparation method comprises the steps that 3, 4-dihydroxycinnamic acid, acrylamide, sodium alkenyl sulfonate modified boric acid and quaternized cardanol are added into water and mixed to be uniform, citric acid continues to be added to adjust the pH, nitrogen continues to be introduced, azodiisobutyronitrile, potassium persulfate and sodium pyrosulfite are added into the mixture, and the mixture is stirred to be uniform; and after the reaction, filtering and washing to obtain the acid liquor thickening agent. The acid liquor thickening agent contains adamantane and benzene ring rigid groups, so that the rigidity of the acid liquor thickening agent is improved, and the anti-shearing capability and the stability of the acid liquor thickening agent are also enhanced; the quaternary ammonium salt group and the sodium sulfonate group improve the temperature resistance and the shear resistance of the acid liquor thickening agent.

The invention belongs to the technical field of industrial silane preparation, and provides a natural silane rotor and a preparation method and application thereof.The preparation method comprises the steps that a pyridoxal phosphate solution and a 4-amino ethyl cinnamate solution are mixed and then react to obtain pyridoxal phosphate cinnamyl ester; and mixing the pyridoxal phosphate cinnamyl ester solution and the amino silane solution, and reacting to obtain the natural silane rotor. The silane rotor has a good conjugated structure, is stable in chemical structure, can be stored for a long time, is good in light stability, and is not liable to cause a photobleaching phenomenon. Besides, conjugated single and double bonds capable of freely rotating exist in the molecular structure, a typical flexible intramolecular rotation characteristic is presented, the conjugated structure can freely rotate in a dilute solution, a surface sightseeing signal is weak, the free rotation phenomenon is limited in a thick solution, the surface sightseeing signal is strong, and the surface sightseeing signal is strong. Therefore, the device can be used as a molecular tool for monitoring the change of the thin consistency of the silane, and can provide real-time, lossless and visual detection support for the development of a silane modulation process.

The invention discloses a preparation method of ethyl 4-chloroacetoacetate, and belongs to the technical field of compound synthesis. The method comprises the following steps: by taking diketene as a raw material, adding a polymethylsilsesquioxane polymerization inhibitor into a dichloromethane solvent, introducing chlorine at low temperature, carrying out chlorination reaction to generate 4-chloroacetoacetic acid, then esterifying the 4-chloroacetoacetic acid with absolute ethyl alcohol to obtain a crude product, and finally distilling and purifying to obtain the product. The preparation method is characterized in that a polymethylsilsesquioxane polymerization inhibitor is added before chlorination reaction, the polymerization inhibitor is prepared by grafting a functional monomer containing a 3, 5-di-tert-butyl-4-hydroxycinnamic acid structure onto surface-ethenylated polymethylsilsesquioxane microspheres, and the polymethylsilsesquioxane polymerization inhibitor has both steric hindrance and free radical capture capability. The method can effectively inhibit the self-polymerization and copolymerization tendency of diketene, intermediates and products in a reaction system, obviously reduces the generation of by-products such as dichloro and polychloro, enables the product to be high in yield and good in purity, and meets the quality requirements of high-end medical intermediates.

The present invention relates to the technical field of inks, and discloses a degradable water-based ink and a preparation method thereof. In the present invention, a DCPD petroleum resin reacts with 4-mercaptohydrocinnamic acid through a thiol-ene addition reaction to obtain a modified petroleum-based resin. Using diallylamine, mercaptopropyltriethoxysilane, 1,6-dibromohexane, epichlorohydrin, etc. as raw materials, through a thiol-ene addition reaction, a substitution reaction, and a quaternization reaction in sequence, a polysilane epoxy-based gemini quaternary ammonium salt is obtained. The epoxy group in the polysilane epoxy-based gemini quaternary ammonium salt undergoes a ring-opening reaction with the hydroxyl group in polyvinyl alcohol to obtain modified polyvinyl alcohol. Finally, the modified petroleum-based resin, modified polyvinyl alcohol, polylactic acid, defoamer, dispersant, etc. are stirred and mixed evenly to obtain a degradable water-based ink. The degradable water-based ink prepared in the present invention is experimentally proven to have good antibacterial properties and adhesion.

The present invention relates to the technical field of heated cigarettes, and in particular to a spicy-flavored tobacco flavor for heated cigarettes and heated cigarettes. The tobacco flavor includes, by mass, 0.1-1.5 parts of main aroma components, including Chinese cinnamon bark oil, cinnamic acid, cinnamaldehyde, piperonal, benzyl cinnamate and isoamyl cinnamate; 5.0-14.0 parts of modified components, including plum extract, ethyl acetate, furfural, methylcyclopentenolone, benzaldehyde, phenylacetic acid, vanillin and ethyl vanillin; fixative: 2.0-5.0 parts, the fixative components include Peruvian extract and triacetin; solvent 75.0-93.0 parts. The tobacco flavor can overcome the problems of large taste irritation and obvious spiciness of existing spicy-flavored raw material flavors, and effectively improve and enrich the quality of the suction aroma while giving the heated cigarette a spicy style, and improve the consistency and persistence of aroma release.

The invention relates to the technical field of ceramic composite materials, and discloses a rare earth doped ceramic composite material and a preparation process thereof, the rare earth doped ceramic composite material is composed of a component A and a component B, wherein the component A is prepared from the following raw materials: polyether polyol, triethanolamine, dibutyltin dilaurate, rare earth type rubber and a chlorite-based flame retardant; the component B is prepared from the following raw materials: isophorone diisocyanate, feldspar powder, talcum powder, low-melting-point glass powder and kaolin. The rare earth type rubber and chlorite-based flame retardant are added into the preparation process of the rare earth doped ceramic composite material, so that the prepared composite material has excellent high-temperature resistance, mechanical strength and flame retardance, can stably play a role in a high-temperature environment and is not prone to being damaged and cracked; and the service life is long.

The present relates to compounds of formula (I) as defined herein. The compounds are suitable for protection against ultraviolet (UV) radiation. Further, the present invention is concerned with compositions comprising at least one compound of formula (I) and uses of said compounds as UV filters and light stabilizing agents.

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 a silica gel material and a preparation method thereof, and belongs to the technical field of high polymer materials. The silica gel material comprises the following components in parts by weight: 80-120 parts of vinyl silica gel, 10-25 parts of vinyl silicone oil, 15-25 parts of reinforcing filler, 3-6 parts of a modified antibacterial agent, 1-3 parts of a modified flexibilizer, 2-6 parts of a foaming agent and 2-6 parts of a cross-linking agent, a quaternary ammonium salt pre-product in the modified antibacterial agent permeates bacterial cell walls, reacts with proteins of cell membranes and adsorbs bacteria through electrostatic interaction, carbazole is combined with anions on the surfaces of the bacteria to destroy bacterial proteins, and cinnamic acid inhibits protein synthesis; a maleimide group in the modified toughening agent enhances the flexibility of a molecular chain, improves the toughness of the material, also improves the glass transition temperature and the melting point of the material, and prevents the material from embrittlement in a high-temperature environment, and polyurethane enhances the toughness of the material; the silica gel material prepared by the invention not only has a good antibacterial effect, but also has excellent heat resistance and toughening performance.

The invention relates to the technical field of traditional Chinese medicine detection, in particular to a characteristic spectrum construction method, a characteristic spectrum and a detection method of traditional Chinese medicine granules. The traditional Chinese medicine granules comprise protocatechuic aldehyde, hydroxysafflor yellow A, salvianolic acid B, cinnamic acid and cinnamaldehyde; the construction method comprises the following steps: taking protocatechuic aldehyde, hydroxysafflor yellow A, salvianolic acid B, cinnamic acid and cinnamaldehyde reference substances, and preparing a mixed reference substance solution; preparing a test solution from the traditional Chinese medicine granules; and respectively carrying out liquid chromatographic analysis on the mixed reference substance solution and the test solution to obtain the characteristic chromatogram of the traditional Chinese medicine granules. Wherein the liquid chromatographic analysis conditions comprise that a phosphoric acid solution is used as a mobile phase A, acetonitrile is used as a mobile phase B, and gradient elution is carried out. The problem that the quality of traditional Chinese medicine particles is difficult to control is solved.