290 results about "Hydroxyethyl cellulose" patented technology

The invention relates to the technical field of oilfield chemistry, and discloses a graft modified cellulose filtrate reducer and a preparation method thereof.The preparation method comprises the following steps that modified hydroxyethyl cellulose, 2-acrylamide-2-methyl propane sulfonic acid, dimethyl diallyl ammonium chloride, alkenylated cardanol and N, N '-methylene bisacrylamide are added into deionized water, stirring is conducted, and a mixture is obtained; the preparation method comprises the following steps: adding cellulose into a reaction kettle, stirring for 10-15 minutes at the temperature of 40-60 DEG C at the speed of 300-400 rpm, dropwise adding ammonium persulfate and sodium hydrogen sulfite into a system, and continuously reacting for 4-6 hours to obtain the grafted modified cellulose filtrate reducer. The filtrate reducer disclosed by the invention has good high temperature resistance and salt resistance.

The invention relates to the technical field of electrolytic copper foil processing, and particularly provides a method for reducing the rough surface roughness of an HVLP copper foil by using a composite additive, which comprises the following steps: step (1): enabling the composite additive to flow into a high-level tank through an additive flow pump, uniformly mixing the composite additive with a copper sulfate electrolyte, and enabling the mixture to flow into a crude foil machine; step (2), then adjusting process parameters of a crude foil machine, including current and line speed of a cathode roller; (3) foil generation and foil drawing are carried out; the composite additive comprises one or two of gelatin and collagen. One or more composite additives composed of gelatin, collagen, sodium dithiodipropane sulfonate, N, N-dimethyl-dithioformamide sodium propanesulfonate, 3-sulfydryl-1-sodium propane sulfonate, hydroxyethyl cellulose and polyethylene glycol are added into the raw foil electrolyte, so that the copper electrodeposition reaction potential can be effectively changed; and uniform and compact copper crystallization peaks are obtained, the rough surface roughness of the raw foil is reduced, and the uniformity of a plating layer is improved.

The invention discloses an efficient anticorrosive coating and a preparation method thereof, and relates to the technical field of coatings. The high-efficiency anticorrosive paint is prepared from a crosslinked membrane modified phytic acid loaded aluminum MCM-41 mesoporous silica composite synergistic filler, a polyurethane / epoxy resin composite emulsion system, titanium dioxide, a BYK-190 dispersing agent, a BYK-021 defoaming agent, a BYK-358N flatting agent, a BYK-425 thickening agent, hydroxyethyl cellulose and deionized water. A cross-linked membrane modified phytic acid loaded aluminum MCM-41 mesoporous silica composite synergistic filler is uniformly dispersed and deeply embedded into a polyurethane / epoxy resin composite emulsion system, countless chemical anchor points are established between the filler and a base material, and the interface bonding property with a resin system is also enhanced, so that the adhesive force of the coating is greatly improved, and meanwhile, the coating has the advantages that the service life of the coating is prolonged, and the service life of the coating is prolonged. And an active and passive three-dimensional protection system formed by the two is used for remarkably improving the corrosion resistance of the coating in the action modes of intelligent response, active repair and physical barrier.

The invention discloses an environment-friendly bio-based coated controlled-release fertilizer with multiple enzymolysis targets and a preparation method of the environment-friendly bio-based coated controlled-release fertilizer, and belongs to the technical field of controlled-release fertilizer production. The environment-friendly bio-based coated controlled-release fertilizer comprises a fertilizer core, an enzyme trigger type internal response layer and a pH sensitive trigger type outer layer, the enzyme trigger type internal response layer is prepared from cationic hydroxyethyl cellulose polyester polyol, an enzyme active site targeting modifier and a degradation accelerator; the pH sensitive trigger type outer layer is prepared from cationic hydroxyethyl cellulose polyester polyol and a covalent self-adaptive network modifier; the outer coating of the fertilizer disclosed by the invention can be degraded under the momentary excitation that the pH value in the coating is reduced after nutrients are released, and can promote degradation microorganisms in soil to be adsorbed to the enzyme-triggered internal response layer, so that the degradation of the internal coating is accelerated. The pH sensitive trigger type outer layer has a promoting effect on the enzyme trigger type inner response layer, and the promoting effect is enhanced by adding the degradation accelerator.

The invention discloses a plant-based deodorant and a preparation method thereof, and relates to the technical field of high polymer materials. When the plant-based deodorant is prepared, beta-cyclodextrin reacts with paratoluensulfonyl chloride and then reacts with ethylenediamine, and amino modified cyclodextrin is prepared; the plant-based extract is subjected to inclusion with amino modified cyclodextrin, and a cyclodextrin inclusion compound is prepared; the preparation method comprises the following steps: reacting hydroxyethyl cellulose with methacrylic anhydride to prepare double-bond modified cellulose; carrying out hydrothermal reaction on titanium sulfate, the carboxylated multi-walled carbon nanotube, ammonium fluoride and cerous nitrate to prepare a co-doped titanium dioxide / carbon nanotube; coating the co-doped titanium dioxide / carbon nano-tubes with oleic acid to prepare modified nano-particles; and reacting the double-bond modified cellulose with the cyclodextrin inclusion compound, and then copolymerizing with the modified nanoparticles and the comonomer to obtain the plant-based deodorant. The prepared plant-based deodorant has the advantages of good deodorization effect, slow release and photocatalytic degradation.

The invention relates to the technical field of paint preparation, in particular to a preparation method for removing harmful gases from paint, which comprises the following steps: preparing functional components for removing harmful gases, and weighing nano titanium dioxide, activated carbon and modified montmorillonite according to the mass ratio of (5-10): (2-5): (1-3); the preparation method comprises the following steps: preparing a resin base material: weighing 30-50 parts by mass of hydroxy acrylic resin, 10-20 parts by mass of polyurethane resin, 20-30 parts by mass of deionized water and 5-10 parts by mass of ethanol; preparing a coating premix: adding 1-3 parts by mass of a polycarboxylate dispersant and 0.5-2 parts by mass of an organic silicon defoaming agent into the resin base material; and preparing a finished product coating: adding 0.5-2 parts by mass of an acrylate leveling agent, 1-4 parts by mass of a hydroxyethyl cellulose thickening agent and 0.5-1.5 parts by mass of an isothiazolinone mildew preventive into the coating premix. The coating disclosed by the invention has the following beneficial effects that the coating can cope with a complex scene in which indoor multi-component pollutants coexist; the problem of harmful gas desorption after adsorption saturation of a single material is avoided, and the purification validity period is prolonged.

The present application relates to thermal insulation coating technical field, specifically to a kind of low VOCs ultraviolet resistant thermal insulation coating composition and its performance testing device, consisting of the following mass parts components: water-based acrylic resin 30-45 parts, nitrogen-doped graphene 1-3 parts, nano composite powder 2-5 parts, low water absorption and expansion glass microsphere 8-12 parts, silane coupling agent modified sepiolite 5-10 parts, silane coupling agent KH560 0.5-1.5 parts, ultraviolet absorber UV-9 0.3-0.8 parts, hydroxyethyl cellulose thickening agent 0.2-0.5 parts;Composition meets the following conditions: (1) VOCs content≤50g / L;(2) ultraviolet absorption rate≥95%;The present application realizes the purpose that VOCs content is far lower than traditional solvent type coating through the synergistic effect of water-based acrylic resin system and low water absorption and expansion glass microsphere, while nitrogen-doped graphene and nano ITO-SiO2 Composite powder form ultraviolet-infrared dual-effect shielding layer, ultraviolet absorption rate, infrared reflectivity greatly improve, solve the problem that traditional anti-UV coating function is single, VOCs is overproof.

The invention provides viscose large biological fibers containing olive active ingredients and a preparation method of the viscose large biological fibers. The fibers comprise viscose fiber matrixes and composite microcapsules dispersed in the viscose fiber matrixes. The composite microcapsule comprises a core load unit and an alkali-resistant encapsulation layer, the core loading unit is a metal organic framework crystal coated with a porous silicon dioxide shell layer on the surface, the metal organic framework crystal is formed by coordination of an organic ligand and zinc ions, and the olive extract is loaded in a pore channel of the core loading unit; the alkali-resistant packaging layer coats the outer surface of the core load unit and is a polyelectrolyte multilayer film formed by alternately depositing chitosan quaternary ammonium salt and sodium polystyrenesulfonate. The preparation method comprises the following steps: preparing the composite microcapsule, mixing the composite microcapsule with a viscose spinning solution and a hydroxyethyl cellulose compatilizer, and spinning to obtain the fiber. Through the design of the core load unit and the alkali-resistant encapsulation layer, the technical problem that the olive extract is easy to inactivate and difficult to slowly release for a long time in a strongly alkaline spinning environment is solved.

The invention relates to the technical field of building material preparation, and particularly discloses a preparation process of a low-temperature fluid curing agent and a stabilized soil building material thereof, and the preparation process comprises the following steps: (1) adding modified starch into water, uniformly stirring, and removing oxygen; then adding maleic anhydride and persulfate, and heating to react; and after the reaction is finished, adding ethanol, separating out the precipitate, and drying to obtain the CMSS-g-MA. (2) adding glycine betaine into water, uniformly stirring, then adding CMSS-g-MA, and heating to react; and carrying out spray drying on the obtained reaction liquid to obtain the modified betaine powder. And (3) taking sulphoaluminate cement, ordinary Portland cement, a polycarboxylate superplasticizer, a silane coupling agent, the modified betaine powder, hydroxyethyl cellulose and the like as raw materials, and uniformly mixing the raw materials to obtain the low-temperature fluid curing agent. The solidified soil slurry can be better prevented from being frozen in a low-temperature environment, the stability of the internal structure of the solidified soil is kept, and a guarantee is provided for low-temperature construction.

The invention belongs to the technical field of medical or hygiene materials, and particularly relates to a medical human body lubricant and a preparation method and application thereof.The medical human body lubricant is prepared from, by mass, 1%-20% of glycerin, 1%-20% of propylene glycol, 0.1%-1% of hydroxyethyl cellulose, 0.05%-0.5% of carbomer, 0.05%-0.5% of sodium polyacrylate, 0.05%-0.5% of triethanolamine, 0.2%-1% of preservative and the balance purified water. The medical human body lubricant prepared by the invention has high moisture retention, is mild and non-irritant, and is suitable for people sensitive to skin.

The application relates to the technical field of building material preparation, and particularly discloses a preparation process of a low-temperature flow-state curing agent and a cured soil building material, which comprises the following steps: (1) adding modified starch into water, stirring until uniform, and then removing oxygen; then adding maleic anhydride and persulfate for heating reaction; after the reaction is completed, adding ethanol, separating out precipitates, and drying to obtain CMSS-g-MA; (2) adding glycine betaine into water, stirring until uniform, then adding CMSS-g-MA for heating reaction; after the reaction is completed, performing spray drying on the obtained reaction liquid to obtain modified betaine powder; and (3) taking sulphoaluminate cement, ordinary Portland cement, polycarboxylate superplasticizer, silane coupling agent, the modified betaine powder and hydroxyethyl cellulose as raw materials, mixing the raw materials until uniform, and then obtaining a low-temperature flow-state curing agent. The application can better avoid the freezing of a cured soil slurry in a low-temperature environment, maintain the stability of the internal structure of the cured soil, and provide guarantee for low-temperature construction.

The present invention provides a water-based surface preparation agent composition that combines paint film stripping and rust removal properties. [Solution] This is a surface preparation agent composition for removing rust along with the existing paint film when repainting an existing paint film applied to existing steel materials. It contains at least benzyl alcohol, a hydroxy acid, and water. The hydroxy acid is citric acid, malic acid, or an acidic salt thereof. Furthermore, it contains hydroxyethyl cellulose as an emulsifier for benzyl alcohol. The pH is preferably 4.0 to 6.0. This water-based surface preparation agent composition is applied to the existing steel material to remove rust along with the existing paint film.

The application discloses a preparation method of an environment-friendly heat-insulating and heat-preserving coating, and the specific steps of the method are as follows: 1) preparing potassium hexatitanate whiskers through a droplet template technology: dissolving oxalic acid in deionized water to obtain A; adding titanium salt and potassium salt into A and stirring to obtain B; adding B into polyvinylpyrrolidone, ethylene glycol and tetrahydrofuran, stirring and aging to obtain a uniform film; heating under the condition of nitrogen to obtain single-crystal potassium hexatitanate; placing the single-crystal potassium hexatitanate in an alumina crucible, heating, quenching between two thick copper plates and cooling in liquid nitrogen; passing oxygen through the sample to obtain potassium hexatitanate whiskers through annealing; 2) preparing the environment-friendly heat-insulating and heat-preserving coating: mixing water, a dispersing agent, a wetting agent, ethylene glycol and a defoaming agent, adding hydroxyethyl cellulose and a pH regulator, further adding potassium hexatitanate whiskers and nano-silica aerogel and dispersing, and sequentially adding a water-based high-elastic emulsion, a water-based silicone-acrylate emulsion, a film-forming aid, a flame retardant, micrometer hollow glass microbeads, a bactericide and a near-infrared reflective material and stirring uniformly.

The embodiment of the invention discloses a multifunctional protection liquid for a paper printed matter and a preparation method of the multifunctional protection liquid. The multifunctional protection liquid is prepared from the following components in percentage by weight: 0.1 to 1 percent of sodium carboxymethyl cellulose, 0.1 to 1 percent of gelatin, 0.1 to 0.5 percent of chitosan, 0.01 to 0.05 percent of nano metal oxide and the balance of water. According to the invention, a composite ultraviolet screening agent compounded by nano titanium dioxide and zinc oxide is adopted, so that full-wave-band ultraviolet screening is realized, and the anti-ultraviolet effect is more excellent than that of a single nano material. Sodium carboxymethyl cellulose is adopted to replace hydroxyethyl cellulose, so that the cost is further reduced, dangerous chemicals are not used, the danger in the preparation process of the protection liquid is reduced, and the protection liquid has a relatively good application prospect.

The invention relates to the technical field of water-based paint preparation, in particular to a preparation method of epoxy resin water-based paint. The coating is prepared from 58 to 89 parts of waterborne acrylic resin, 36 to 59 parts of stearic acid, 22 to 46 parts of dimethyl silicone oil, 24 to 35 parts of calcium chloride, 43 to 55 parts of propylene glycol butyl ether, 32 to 40 parts of nano zinc oxide powder, 28 to 40 parts of hydroxyethyl cellulose, 30 to 47 parts of waterborne epoxy resin, 25 to 30 parts of antimony oxide, 45 to 72 parts of terephthalic acid, 14 to 35 parts of butanol and 22 to 45 parts of calcium lactate. The coating has the beneficial effects that the film-forming property and the corrosion resistance are improved, and the water-based acrylic resin and the water-based epoxy resin combine excellent weather resistance, good cohesiveness and high drying speed of the acrylic resin and good adhesive force, chemical resistance and stability of the epoxy resin, so that the coating has good comprehensive performance; the coating not only can be kept stable under different environmental conditions, but also can resist external chemical erosion and physical wear, and the service life of the coating is greatly prolonged.

The invention relates to a skin moistening composition for a mask and a preparation method thereof, and belongs to the technical field of skin care products, the skin moistening composition is composed of sodium polyglutamate, saccharide isomeride, prunus amygdalus dulcis oil, cajeput leaf oil, an auxiliary natural extract, a permeation enhancing component, a dispersing component, a thickening component, an antiseptic component and deionized water, the auxiliary natural extract comprises a dracocephalum dracocephalum extract and a roselle extract, the permeation enhancing component is at least one of laurocapram and isopropyl myristate, the dispersing component comprises polyglycerol-10 myristate and polyglycerol-6 octoate, the thickening component comprises carbomer and hydroxyethyl cellulose, and the stabilizing component comprises a stabilizing component and a stabilizing component. According to the skin moistening composition, the preservative components comprise sodium ethylparaben and sodium methyl paraben, although the active components of the skin moistening composition are all natural source components, the skin moistening performance is still excellent, the skin moistening and moistening effects are excellent, and the skin care advantages of mildness and strong effect are shown.

This invention belongs to the field of corrugated paper technology, specifically relating to a high-strength, water-resistant corrugated paper and its application in waterproof cartons. This invention involves comprehensively treating the corrugated core paper using an impregnation solution and a coating. The impregnation solution utilizes modified silica sol and boron quantum dots to modify titanium dioxide, while the coating is modified to remove hydroxyethyl cellulose. This process yields a high-strength, water-resistant corrugated paper that significantly increases edge crush strength, improves the oxygen index, and effectively reduces water absorption.

The application discloses a waterproof makeup composition in the field of cosmetics and a preparation method thereof. The composition comprises a self-repairing organic silicon polyurethane elastomer, double-hydrophobic modified nano silicon dioxide, cyclopentasiloxane, red iron oxide, hydroxyethyl cellulose, polyglyceryl isostearate, sodium hyaluronate, phenoxyethanol, vitamin E acetate and deionized water. The preparation process comprises the following steps: dissolving the self-repairing organic silicon polyurethane elastomer in cyclopentasiloxane to form an oil phase; dissolving hydroxyethyl cellulose in water and then adding other components to form an aqueous phase; mixing and emulsifying the two phases, adding double-hydrophobic modified nano silicon dioxide and other components for grinding, and finally adjusting the pH value. The composition has excellent waterproof performance, long-lasting makeup effect and self-repairing function, and has good skin compatibility.

The application discloses a polymer-assisted exfoliated boron nitride nanosheet / aramid nanofiber composite heat-conducting film and a preparation method thereof. Hexagonal boron nitride is dispersed into sodium carboxymethyl cellulose aqueous solution and hydroxyethyl cellulose aqueous solution respectively to obtain first and second suspensions. Then, the polymers in the suspensions are homogenized and separated under a pressure of 75-90 MPa. The obtained dispersion liquid is mixed with aramid nanofiber dispersion liquid to form a film to obtain the boron nitride nanosheet / aramid nanofiber composite heat-conducting film. In the application, h-BN is introduced into CMC aqueous solution and HEC aqueous solution, and h-BN is exfoliated under a certain pressure. The coating degree of h-BN can be changed by changing the viscosity, and the collision force and shear force of h-BN on the homogenization channel in the homogenization process can be changed, so that BNNS with high aspect ratio and low defects is prepared, the intrinsic thermal conductivity of BNNS is improved, and the thermal conductivity of the boron nitride nanosheet / aramid nanofiber composite film is finally improved.

The invention relates to an antibacterial gel and a preparation method thereof. The gel mainly comprises silver ions, avocado oil, a radix puerariae extract, wheat germ oil, emulsifying wax, a folium artemisiae argyi extract, glycerol, a styrene / butadiene copolymer, purified water and hydroxyethyl cellulose. Extracts containing specific small-molecule polypeptides are extracted from Artemisia rubescens and Radix Puerariae through a specific extraction method, and the polypeptides are Artemisia rubescens polypeptides (SEQ ID No: 1) and Radix Puerariae polypeptides (SEQ ID No: 2) respectively. The extracts have a synergistic effect with silver ions, so that the antibacterial effect of the gel is remarkably improved, and particularly, the gel has a remarkable inhibiting effect on staphylococcus aureus, escherichia coli and candida albicans. The bacteriostatic gel is simple in preparation method, convenient to use and suitable for bacteriostasis of female vaginal mucosa and maintenance of vaginal micro-ecological internal environment.

The invention discloses a high internal phase gel emulsion using rosin modified hydroxyethyl cellulose and a surfactant to synergistically stabilize and a preparation method of the high internal phase gel emulsion. Rosin modified hydroxyethyl cellulose (DA) (EO) 5GE-g-HEC with a specific rosin grafting rate is selected as a main emulsifier, and the surfactant with a specific structure is selected as an auxiliary emulsifier; through the synergistic effect of rosin modified hydroxyethyl cellulose and a surfactant, the water-in-oil type high-internal-phase gel-state emulsion with elastic dominant rheological properties is prepared, the rheological properties of the emulsion are shown as follows: the energy storage modulus is always higher than the loss modulus, the loss factor is smaller than 0.4, the emulsion is free of oil-water layering after standing for 6 months, and the emulsion is inverted and does not flow when the concentration reaches the standard; meanwhile, the particle size of the liquid drops is accurately regulated and controlled within the range of 10-40 microns, the half-peak width of particle size distribution is reduced by more than 40%, the distribution concentration ratio is remarkably improved, and an ideal basic system is provided for material template application due to the unique rheological property and stability of the liquid drops.

The invention relates to the technical field of fireproof coatings, in particular to an environment-friendly fireproof coating for medical equipment and a preparation method of the environment-friendly fireproof coating. The modified acrylic emulsion is prepared by adding an acrylic reaction monomer, an acrylated antibacterial material, an acrylated flame-retardant material, dibenzoyl peroxide, triethylamine, flame-retardant siloxane, ethanol and deionized water. Adding hydroxyethyl cellulose, titanium dioxide, a defoaming agent and a dispersing agent into the modified acrylic emulsion, and uniformly stirring to obtain the environment-friendly fireproof coating. The environment-friendly fireproof coating prepared by the invention has excellent flame retardance, environment friendliness and antibacterial property, so that the environment-friendly fireproof coating has a wide application prospect in the technical field of fireproof coatings.

The invention relates to the technical field of chemical auxiliaries for oilfield exploitation, and particularly discloses an environment-friendly nano solubilizer for an oilfield and a preparation method of the environment-friendly nano solubilizer. A preparation method of an environment-friendly nano solubilizer for an oil field comprises the following steps: S1, uniformly mixing N, N-dimethylformamide and hydroxyethyl cellulose in an inert atmosphere, then adding an organic base catalyst, uniformly mixing, heating to 35-45 DEG C, adding aromatic acyl chloride, heating to 75-85 DEG C, reacting for 4-6 hours, cooling, carrying out solid-liquid separation, washing, drying and crushing to obtain modified cellulose; s2, uniformly mixing a cosolvent, xanthan gum, a salt solution and a composite surfactant at 30-40 DEG C, adding the modified cellulose, uniformly mixing, and dispersing to obtain the environment-friendly nano solubilizer. The environment-friendly nano solubilizer prepared by the invention has relatively low interfacial tension and relatively high viscosity reduction rate.

The invention relates to a temperature response type microsphere, an essential oil slow-release carrier and a preparation method thereof.The preparation method comprises the steps that 1, essential oil and a compound emulsifier are mixed to form an oil phase, and polyvinyl alcohol and N-isopropylacrylamide are dissolved in deionized water to form a water phase; then, dropwise adding the oil phase into the water phase under high-speed stirring to form a microemulsion, and carrying out interfacial polymerization reaction through heating and nitrogen protection to finally obtain the temperature response type microspheres; and (2) mixing the obtained microspheres with plant fiber powder and hydroxyethyl cellulose, and carrying out die-casting molding to form the essential oil slow-release carrier, thereby realizing the regulation of the release rate of the essential oil.

A noninvasive ophthalmic formulation, comprising a chelator (such as EDTA and its salts), a transport enhancer (such as Methyl Sulfonyl Methane; MSM), a second polyoxyalkylene permeation enhancer such as propylene glycol capable of enhancing permeation through lipid-thickened ocular membranes, a thickening agent such as hydroxyethyl cellulose (HEC) and a surfactant such as polysorbate 80, is provided. The novel combination of the ingredients unexpectedly and beneficially reduces symptoms associated with early-stage, age-related cataracts. Methods for treating cataracts with compositions of the invention and measurement of improved visual function by measuring contrast sensitivity (CS) are provided.

A patch composition for targeting herpes virus comprising the following ingredients: a patch base, trisodium phosphate, malic acid, sorbitol, sodium benzoate, cellulose gum, peppermint, sodium saccharin, naringin, wind wheel grass extract, xanthan gum, polyethylene glycol-8, calcium carbonate, hydroxyethyl cellulose, hydroxypropyl guar gum, sodium nitrate, hydrated silica, sodium lauryl sulfate, strontium chloride hexahydrate, tranexamic acid, two-faced needle extract, sodium monofluorophosphate, sea salt, potassium nitrate, sodium chloride, and purified water q.s.

The invention relates to a cross response type silk-screen printing paper-based micro-fluidic chip and a preparation method and application thereof, and the preparation method comprises the following steps: S1, printing a hydrophobic agent on a non-pattern area on the surface of a paper base through a silk-screen printing technology, and cooling to obtain a first modified paper base; or soaking the paper base in the hydrophobic agent solution to obtain a hydrophobic paper base, and then printing the hydrophilic auxiliary agent on the pattern area on the surface of the hydrophobic paper base through the silk-screen printing technology to obtain a second modified paper base; s2, the pattern area of the first modified paper base or the pattern area of the second modified paper base are coated with a series of sensitive indicator printing ink, the sensitive indicator printing ink contains hydroxyethyl cellulose, and the paper-based micro-fluidic chip is obtained after drying. The modified paper base with the hydrophilic array pattern and the hydrophobic non-pattern area is prepared through a one-step method or a two-step method, so that free diffusion of a hydrophilic indicator is avoided, it is guaranteed that the pattern is clear, and the modified paper base can be applied to detection of gas and solution specific substrates.

The invention discloses a cooling anti-radiation coating. The cooling anti-radiation coating comprises a surface coating, a middle coating and a bottom coating, the surface coating comprises the following components in percentage by weight: 40-60% of polyethylene, 1-5% of carbon nanotubes, 1-5% of graphene oxide, 10-15% of a dispersant, 5-8% of polyethylene glycol, 3-8% of nano barium oxide and 3-10% of nano boron nitride. The intermediate coating comprises the following components in percentage by weight: 50%-70% of polyurethane, 20%-30% of a silane coupling agent and 5%-10% of aluminum oxide; the bottom coating comprises the following components in percentage by weight: 70%-80% of resin, 7%-9% of talcum powder, 2%-4% of aluminum oxide and 3%-10% of hydroxyethyl cellulose. The cooling anti-radiation coating formed by the synergistic cooperation of the components has high electromagnetic shielding performance and long service life.

This invention relates to a biodegradable barrier antibacterial moisture-absorbing film, which consists of two layers: a quaternary ammonium salt chitosan / hydroxyethyl cellulose composite layer and a methacrylated gelatin / methacrylated carboxymethyl chitosan composite layer. The two layers are bonded together by casting, biaxial stretching, and hot pressing, and a reaction is achieved between them to achieve a tight bond. The composite film has good tensile strength, ductility, and tear resistance. Under dry conditions, the film has good oxygen and carbon dioxide barrier properties, and also has good moisture absorption. This film can be used in packaging applications requiring barrier, moisture absorption, and antibacterial properties.

The application relates to the technical field of copper foil and discloses an electrolytic copper foil and a roughening treatment method thereof. The roughening treatment method of the electrolytic copper foil comprises the following steps: S1, adding an organic-inorganic composite additive into a prepared base roughening solution to prepare a roughening solution, wherein the organic-inorganic composite additive comprises sodium molybdate, sodium tungstate and hydroxyethyl cellulose, the concentration of the sodium molybdate is 30-50 mg / L, the concentration of the sodium tungstate is 20-40 mg / L, and the concentration of the hydroxyethyl cellulose is 6-10 mg / L; and S2, performing cathode electrolytic roughening treatment on a pretreated copper foil by using the roughening solution to obtain the electrolytic copper foil. Through the above mode, the problem that a roughening layer is difficult to synchronously realize the comprehensive performance target of 'low roughness, high peeling strength and uniform compactness' can be solved.