993 results about "Antibacterial effect" patented technology

The invention provides an anti-dandruff composition based on double barrier repair as well as a preparation method and application thereof, and relates to the technical field of shampoo supplies, the anti-dandruff composition comprises the following effective components: at least two of isodon amethystoides extract, polygonum capitatum extract and myrobalan extract. The compound has a synergistic antibacterial effect, still has a synergistic antibacterial effect after being compounded with OCT, and can be used for replacing or cooperating with OCT, so that the dosage of OCT is reduced, and the irritation is reduced; the anti-dandruff composition has the advantages that the anti-dandruff effect is good, the DPPH free radical scavenging capacity of the anti-dandruff composition is better than that of OCT, the isodon amethystoides extract, the polygonum capitatum extract and the fructus chebulae extract are plant extracts and have no irritation to scalp, the whole anti-dandruff composition has no irritation to the scalp, and the technical problems that in the prior art, anti-dandruff products have certain influences on skin barriers, and the long-acting anti-dandruff effect cannot be achieved are solved.

The invention provides an intelligent evaluation method and system for the antibacterial effect of a water matrix standard substance, and relates to the technical field of intelligent evaluation, and the method comprises the following steps: preparing a bacterial suspension in a logarithmic phase and checking turbidity; preparing a water matrix standard substance and a control solvent, and obtaining a baseline parameter set; setting inoculum size and incubation conditions, determining the antibacterial efficiency in parallel, and performing image segmentation correction on sticky colonies to obtain an original observation set; establishing a deviation transfer relationship, correcting the original data, and forming an endpoint quantization set; and the bacteriostatic validity is output through evidence fusion, and a supplementary experiment is carried out on a critical condition. According to the method, the accuracy and reliability of bacteriostatic effect evaluation of the water matrix standard substance are improved.

The invention relates to the technical field of antibacterial non-woven fabrics, and discloses an intrinsic antibacterial non-woven fabric and a preparation method thereof.The intrinsic antibacterial non-woven fabric is prepared by adopting a dip-coating method and by soaking a non-woven fabric in antibacterial slurry, taking out the non-woven fabric for drip drying and then drying the non-woven fabric to constant weight; wherein the antibacterial slurry is prepared by compounding antibacterial polyol with a synergistic antibacterial effect, nano titanium dioxide modified by a coupling functional phenolic hydroxyl Schiff base type antibacterial monomer and a branched antibacterial monomer. According to the intrinsic antibacterial non-woven fabric, the technical problems that in the prior art, an antibacterial agent is large in toxicity, prone to loss and insufficient in antibacterial spectrum coverage range are solved, and the intrinsic antibacterial non-woven fabric can also be applied to the field of filtering materials, the field of medical treatment and public health and the field of textile materials and has the beneficial technical effects of inhibiting bacterial growth and guaranteeing sanitation and safety.

The invention relates to a double-layer preservative film for prolonging the shelf life of frozen beef and mutton after unfreezing and a preparation method of the double-layer preservative film. According to the preparation method of the angelica dahurica extract-gliadin nano-particles, the angelica dahurica extract-gliadin nano-particles can be used for preparing a double-layer preservative film, and the preservative film is a natural component and is environmentally friendly and safe. The preservative film is of a double-layer structure, the mechanical performance is enhanced through the double-layer film structure, and meanwhile the preservative film has excellent oxygen and water vapor barrier performance and an antibacterial effect. According to the preservative film disclosed by the invention, slow release of active ingredients is realized by utilizing the Pycnogenin-gliadin nanoparticles, so that the antioxidant and antibacterial effects are remarkably improved, and the quality guarantee period of meat is prolonged. In addition, the preservative film does not need to be in direct contact with food in practical application, potential safety hazards of the food are further reduced, the operation process is simplified, pollution is avoided, a user can conveniently use the preservative film, the preservative film has the advantages of efficient preservation and environmental protection, and the preservative film has good application prospects and value.

The invention relates to the field of plastic films, and particularly discloses a bio-based antibacterial cool-feeling breathable film and a preparation method thereof. The bio-based antibacterial cool-feeling breathable film is prepared from the following raw materials in percentage by weight: 49 to 66.5 percent of matrix resin, 30 to 40 percent of pore-foaming agent, 1 to 3 percent of silane modified cellulose nanofiber, 1 to 2 percent of antibacterial agent, 1 to 5 percent of composite cool-feeling agent and 0.5 to 1 percent of auxiliary agent, the matrix resin comprises PBAT resin and PLA resin in a mass ratio of (7: 3)-(5: 5); the composite cool feeling agent comprises nano aluminum nitride and graphene in a mass ratio of (5-15): 1. The bio-based antibacterial cool-feeling breathable film can be used for medical dressings, disposable medical supplies, mother and baby products and the like, and has the advantages of being good in breathability and moisture penetrability, high in antibacterial capacity, lasting in antibacterial effect, high in mechanical strength, high in cool-feeling coefficient, comfortable to wear and not prone to stuffiness.

The microcapsule controlled-release efficient deodorization paper diaper comprises a deodorization surface layer, a flow guide layer, a composite core body and a bottom layer which are sequentially compounded, the deodorization surface layer is coated with deodorization antibacterial liquid containing controlled-release microcapsules, the composite core body is composed of a rapid absorption layer and a deodorization water locking layer, the rapid absorption layer and the deodorization water locking layer both contain controlled-release microcapsules, and the bottom layer is coated with deodorization antibacterial liquid containing controlled-release microcapsules. The preparation method comprises the following steps: S1, preparing quaternary ammonium salt chitosan; s2, preparing an inner core layer of the controlled-release microcapsule; the preparation method comprises the following steps: S1, preparing a shell layer, S2, preparing quaternary ammonium salt chitosan, S3, preparing amphiphilic chitosan microspheres, S4, loading a natural plant extract on the amphiphilic chitosan microspheres, S5, coating the shell layer to prepare a controlled-release microcapsule, S6, preparing a deodorization surface layer, S7, preparing a composite core body, and S8, carrying out composite molding on the paper diaper. The deodorization efficiency and durability are obviously improved, and meanwhile, the paper diaper is kept dry and comfortable.

The invention discloses a stainless steel material for a food-grade straw and a preparation process of the stainless steel material, and relates to the technical field of stainless steel material plating. The silver coating and the antibacterial coating are arranged on the surface of the stainless steel material, and the stainless steel material has good wear resistance and antibacterial performance through the action of the double protective layers. Sulfonated polyphenylene sulfide is added into a silver plating solution, a plating layer is formed after electroplating, the surface of a stainless steel material is not prone to being scratched, the wear resistance of stainless steel is improved, quaternary ammonium salt modified tea polyphenol-nano-silver composite particles are added into the antibacterial coating, and through the synergistic antibacterial effect of quaternary ammonium salt, tea polyphenol and nano-silver, the wear resistance of the stainless steel material is improved. The broad-spectrum antibacterial property is realized, and the efficient antibacterial effect is achieved.

The invention discloses application of macadamia nut green peel in preparation of an antibacterial agent, and belongs to the technical field of application of antibacterial agents. The invention finds that the macadamia nut green peel has an antibacterial effect for the first time, and the preparation method of the antibacterial agent comprises the following steps: cleaning the macadamia nut green peel, drying, crushing, sieving, collecting powder on the sieve, adding distilled water, carrying out a hydrothermal reaction, carrying out suction filtration after the reaction is finished, and collecting filtrate, so as to obtain the antibacterial agent. The antibacterial agent prepared from the macadamia nut green peel can effectively inhibit escherichia coli and staphylococcus aureus, and a new way is provided for resource utilization of the macadamia nut green peel.

The invention provides a heat-storage warm-keeping down-locking layered fabric and a down jacket. The heat-storage warm-keeping down-locking layered fabric sequentially comprises a skin-friendly layer, a liner cloth layer and a heat-storage warm-keeping down-locking layer from inside to outside, and the heat-storage warm-keeping down-locking layer is prepared by napping a heat-storage warm-keeping fabric; yarns for weaving the heat-storage and warm-keeping fabric are heat-storage and warm-keeping fiber / hollow polyester fiber / wool fiber blended yarns; the heat-storage warm-keeping fiber comprises polyester and a heat storage agent, and the preparation method of the heat storage agent comprises the following steps: firstly loading a polyethylene glycol / nano molybdenum disulfide composite material by adopting porous silicon dioxide microspheres, then mixing with a mixture containing silica sol and nano metal silver, and performing vacuum drying to obtain the heat storage agent. The heat-storage warm-keeping down-locking layered fabric has excellent heat-storage warm-keeping effects, can lock down, has a good antibacterial effect, and has a very good application effect when being used as a lining fabric of a down jacket.

The invention belongs to the technical field of bioengineering medicines, and particularly relates to a gel dressing for repairing skin wounds and a preparation method of the gel dressing. The anti-fouling coating is prepared from the following raw materials in parts by weight: 65 to 75 parts of polyvinyl alcohol, 14 to 20 parts of sodium alginate, 4 to 8 parts of sodium carboxymethyl cellulose, 1 to 3 parts of sodium hyaluronate, 12 to 22 parts of glycerol, 1 to 3 parts of surface anti-fouling additive, 6 to 10 parts of antibacterial microcapsule and 2 to 2.8 parts of compound ion. According to the invention, a PVA freeze-thaw physical network and an alginic acid Ca / Zn composite ion network cooperate to limit a pore channel, so that stable forming is realized; a chitosan / sodium tripolyphosphate microcapsule is prepared from polyhexamethylene biguanide hydrochloride and covered with sodium alginate, release sensitive to pH / ionic strength, acceleration in an inflammation stage and self-limiting in a later stage are constructed, and long-acting bacteriostasis is formed by SA-Zn site slow release; the stability and staged adaptation are highlighted through processes such as encapsulation, low-shear doping and the like and raw material synergy.

The invention relates to the technical field of high polymer material processing and coating, in particular to an acrylic plate antifouling and antibacterial enhancing method based on a nano-composite coating, which comprises the following steps: S1, pretreating the surface of an acrylic plate; s2, preparing a nano composite coating; s3, coating: coating the surface of the acrylic plate with the activated surface with the nano-composite coating liquid, adopting a spin-coating method for coating, determining the spin-coating speed through an early test so as to control the thickness of the coating, checking the uniformity of the coating through vision after coating, and re-coating if non-uniform parts exist, in the coating process, the environment humidity is monitored through a humidity sensor and controlled at a low level so as to prevent coating defects, and the acrylic plate coated with the nano composite coating is obtained; and S4, coating curing. The antifouling and antibacterial effects of the coating are comprehensively evaluated by means of contact angle measurement, dirt adhesion experiments and the like, and the concentration or spin-coating speed of the nano material is adjusted according to a test result, so that the performance of the coating is further optimized.

The invention discloses an itching-relieving and hair-loss-preventing micro-capsule composition containing a golden camellia extract and a preparation method of the itching-relieving and hair-loss-preventing micro-capsule composition, and relates to the technical field of daily chemical products. The microcapsule mainly comprises a surfactant, palmitoyl tripeptide, ossein amino acid, betaine salicylate, a nano zinc oxide chelate, a plant extract, vegetable oil and a microcapsule component formed by a microcapsule wall material prepared from gelatin and sodium alginate. The plant extract, the plant oil-containing microcapsules, palmitoyl tripeptide, ossein amino acid, betaine salicylic acid, nano-zinc oxide chelate and the like have synergistic interaction, and the plant extract has antioxidant, antibacterial and anti-inflammatory effects and is matched with other components, so that lasting antibacterial effect is enhanced, dandruff can be effectively cleaned and removed, scalp can be repaired, microcirculation of the scalp can be effectively improved, and the scalp care effect can be improved. The scalp itching is reduced, and the alopecia problem is improved.

The invention provides a fluorescent antibacterial acrylic emulsion as well as a preparation method and application thereof. The fluorescent antibacterial acrylic emulsion comprises an acrylic monomer, AIE fluorescent micromolecules, an antibacterial quaternary ammonium salt monomer, a nonionic emulsifier, a cationic emulsifier, an initiator, a stabilizer and deionized water. The cosolvent of the water-based acrylic coating is water, no VOC (volatile organic compound) is discharged when the water-based acrylic coating is used, and harm to the environment and human bodies is reduced to the minimum; meanwhile, the antibacterial coating is prepared in a positive ion and ROS joint antibacterial mode, and the antibacterial effect is more excellent; and a convenient detection method for reflecting the change of the antibacterial property of the coating through the fluorescence change of the coating avoids the trouble of professional biological detection.

The invention discloses a regenerated oil bio-based plastic mixed rubber sole material, which is prepared from the following materials in parts by mass: 40 to 60 parts of regenerated oil bio-based plastic, 20 to 30 parts of smoke rubber, 10 to 15 parts of modified mixed reinforcing filler, 10 to 20 parts of calcium powder, 0.5 to 1.0 part of dicumyl oxide, 1.0 to 1.5 parts of zinc oxide, 0.5 to 0.8 part of stearic acid, 1.5 to 2.5 parts of octylated diphenylamine and 4 to 6 parts of antibacterial and mildew-proof filler. The invention relates to the technical field of rubber soles. According to the regenerated oil bio-based plastic mixed rubber sole material and the preparation method thereof, by adding the modified mixed reinforcing filler and the modified antibacterial mildew-proof filler, when the regenerated oil bio-based plastic mixed rubber sole material is applied to the regenerated oil bio-based plastic modified rubber sole material, the situations of bending, deformation and the like of a sole in the wearing process can be better adapted; and the wearing comfort and durability of the sole are improved. The regenerated oil bio-based plastic mixed rubber sole material meets the antibacterial effect requirement, has the anti-cracking performance, can be better applied to the regenerated oil bio-based plastic mixed rubber sole material, improves the comprehensive performance of the sole and prolongs the service life of the sole.

The invention discloses an oral dispersion liquid composition capable of effectively inhibiting bacteria, and relates to the technical field of nano-emulsion / micro-capsule suspension liquid. Aiming at the problems of transient antibacterial effect, strong irritation and poor dispersibility of the traditional oral care product, the composition is prepared by adopting a nano-emulsion and micro-capsule technology. A bacteriostatic agent (such as nano-silver and thyme volatile oil) is wrapped in urea formaldehyde microcapsules through an interfacial polymerization method, and protection and controlled release of active ingredients are achieved. The nano-emulsion is prepared by compounding Span and Tween emulsifiers, so that high dispersity and permeability are ensured; tea polyphenol is added as an antioxidant, so that the stability is enhanced. The preparation method comprises the steps of nano-emulsion preparation, active ingredient microencapsulation, disperse system construction and sterilization filling, and the particle size D90 of a final product is smaller than or equal to 200 nm. The composition has a lasting antibacterial effect, good stability and safety, and is suitable for oral health maintenance.

The invention discloses a polyurethane coating and a preparation method thereof, and belongs to the technical field of antibacterial coatings. The preparation method of the polyurethane coating comprises the following steps: carrying out acyl chloride substitution reaction on a phenolic substance and a chlorine donor to obtain an intermediate reactant, and carrying out conjugate addition reaction on the intermediate reactant and an amine substance with hydroxyl groups at two ends to obtain antibacterial diol; reacting the antibacterial diol with isocyanate to obtain a polyurethane coating; the phenolic substance is selected from at least one of thymol, carvacrol, paeonol, catechol and theaflavin. The antibacterial coating is applied to the aspect of an antibacterial coating of a food contact part, the problem that the antibacterial property of an existing antibacterial coating is difficult to last is solved, and the antibacterial coating has the synergistic antibacterial effect of killing and defending bacteria.

A device for relieving migraine symptoms comprises a straight pipe and a cylinder, the left side of the straight pipe communicates with the right side of the cylinder, the left side of the cylinder is connected with a compression structure, the right side of the outer wall of the straight pipe is connected with a control structure, the right side of the control structure is connected with a curved block, and the left side of the compression structure is connected with a grip. The outer wall of the compression structure is attached to the inner wall of the straight pipe. In the control structure, the inner wall of the sleeve and the right side thread of the outer wall of the straight pipe are fixed in a threaded mode, then the curved block is inserted into the ear canal, the protection pad is attached to the outer side of the ear canal, the curved block can be prevented from being inserted too deep, and the protection pad can be tightly attached to the outer side of the ear canal through the colored cotton material of the protection pad to guarantee sealing; meanwhile, the device has an antibacterial effect and good skin-friendly property, so that the comfort of ears is ensured, the use safety of the device for relieving the migraine symptom is improved, and the normal use of the device for relieving the migraine symptom is ensured.

The invention discloses a preparation method of a rare earth ion doped antibacterial modified hydroxyapatite whisker material, and relates to the technical field of medical biomaterials.The preparation method comprises the steps that acetamide is dissolved in deionized water, and a solution A is obtained; dissolving calcium salt, cerium salt and ammonium salt in a certain proportion in the solution A to obtain a solution B; stirring the solution B at room temperature, performing ultrasonic dispersion, and adjusting the pH value to be acidic to obtain a solution C; and putting the solution C into a high-pressure reaction kettle, heating and reacting, aging, cleaning, carrying out suction filtration, and drying to obtain the cerium-doped hydroxyapatite whisker material. The preparation process is simple, the product is stable, and the prepared modified hydroxyapatite whisker has an obvious antibacterial effect on escherichia coli and staphylococcus aureus and can be applied to the field of bone repair antibacterial materials.

The invention discloses antibacterial ceramic glaze and a preparation method thereof, relates to the technical field of ceramic glaze, and solves the problems that part of ceramic glaze is poor in antibacterial effect, the mechanical strength of the glaze surface is relatively low, and the production process is relatively tedious. The invention discloses antibacterial ceramic glaze and a preparation method thereof. The antibacterial ceramic glaze comprises the following components in parts by weight: 25-45 parts of potassium feldspar, 5-10 parts of nano yttrium-doped zirconium oxide, 3-10 parts of a lanthanide silver composite antibacterial agent, 7-25 parts of a fluxing agent, 1-7 parts of a wear-resistant reinforcing agent, 2-6 parts of an adhesive and 20-50 parts of deionized water. According to the invention, the nano yttrium-doped zirconium oxide and the lanthanide silver composite antibacterial agent are added into the glaze for cooperation, so that rare earth metals yttrium, lanthanum and silver in the glaze have a synergistic effect, the produced glaze can form a stable antibacterial phase at a high temperature, and meanwhile, the mechanical strength of the glaze surface is remarkably improved by the nano zirconium oxide.

The present invention discloses a washable electric heating blanket core, and belongs to the field of electric blankets; wherein the washable electric heating blanket core comprises a blanket core and a controller connected to the blanket core by means of a wire, wherein the blanket core is woven from a yarn base material and a heating element, the heating element is composed of heating yarn, and the heating yarn is made of graphene yarn, carbon nanotube yarn, or silver-plated yarn; and positive conductive wires and negative conductive wires are arranged on an upper surface of the blanket core; when the heating yarn employs the graphene yarn or the carbon nanotube yarn, and when the heating yarn employs the silver-plated yarn, the antibacterial effect can be enhanced; wherein the electric heating blanket core can be used in different application scenarios such as blankets and carpets, and is widely used.

The invention discloses a polymer composite material based on artemisinin modification, which is characterized in that the polymer composite material comprises organic silicon polyurethane modified by an artemisinin compound and organic silicon polyurea, and the mass ratio of the organic silicon polyurethane modified by the artemisinin compound to the organic silicon polyurea is (2-1): (1-2). The coating is high in hardness, good in mechanical performance, low in elastic modulus, good in stain removal effect and good in adhesion performance, can be stably attached to a substrate and is not prone to falling off, meanwhile, has an excellent antibacterial effect, is not prone to being hydrolyzed by water in seawater or air in the using process on the premise that all the conditions are met, is good in water resistance and can be widely applied to the field of water treatment. Therefore, the long-term stability of the composite coating is ensured, the comprehensive performance of the coating can be comprehensively improved, and the marine antifouling coating serving as an environment-friendly marine antifouling coating has a good application prospect.

The invention provides an antibacterial degradable plastic meal box, which is prepared from the following ingredients in parts by mass: 45 to 60 parts of T30S polypropylene, 25 to 35 parts of 1080 polypropylene, 7 to 9 parts of ethylene copolymers, 11 to 13 parts of inorganic fillers, 0.3 to 10 parts of antibacterial agents and 0.3 to 3 parts of white oil. The invention also provides a preparation method of the antibacterial degradable plastic meal box. Compared with the prior art, the problems that an existing plastic meal box is low in degradation rate and poor in antibacterial effect can be solved.

The invention provides an alginate fiber sanitary towel and a preparation method thereof, and belongs to the technical field of nursing materials. Through the directional water-repellent design of the double-sided reverse osmosis prevention functional layer and in combination with the three-dimensional leakage-proof partition edge structure, the risks of liquid back seepage and side leakage are remarkably reduced, and the use dryness and reliability are improved; the natural antibacterial effect of the alginate fibers is utilized, efficient peculiar smell control is achieved, irritation of traditional chemical bacteriostatic agents to the skin is avoided, and biological safety is guaranteed; the core material adopts alginate fiber renewable resources, the characteristics of high water absorption and degradability of the alginate fiber absorber are combined, the environmental protection sustainability of the product is enhanced, the common problems of reverse osmosis, side leakage, dependence on chemical addition and the like of the sanitary towel are solved, meanwhile, the unification of the protection performance, the health attribute and the sustainability is achieved through material and structure innovation, and the sanitary towel is suitable for being used for sanitary napkins. And a technical normal form capable of being flexibly expanded is provided for the industry.

The invention discloses a bacteriostatic composition and an application thereof in a hand sanitizer, the bacteriostatic composition comprises the following components by mass: 3-5% of lysozyme, 4-8% of an enzyme protection system, 8-12% of a plant bacteriostatic extract, 10-15% of a biological matrix carrier, 5-8% of a stable protection system, and the balance of water. According to the antibacterial composition, a three-dimensional network structure is formed through the carboxymethyl chitosan-sodium alginate compound, a protective layer with good biocompatibility can be formed on the skin surface, and the skin retention time of lysozyme and plant antibacterial active ingredients is remarkably prolonged. According to the invention, lysozyme and plant antibacterial components are adopted to form multiple antibacterial mechanisms: the lysozyme specifically hydrolyzes peptidoglycan in bacterial cell walls, and active components in the plant antibacterial extract destroy bacterial cell membranes and inhibit bacterial metabolism. The double-attack mechanism has a stronger antibacterial effect than a single component, and can prevent bacteria from generating drug resistance at the same time.

The invention relates to an anti-dandruff composition, a preparation method thereof and application of the anti-dandruff composition in shampoo products, and belongs to the technical field of washing care, and the anti-dandruff composition comprises the following raw materials: a plant bacteriostatic component, an oil control component, a moisturizing component, an emulsifier and a solvent. According to the application, the humulus lupulus flower extract, the phryma leptostachya extract and the inula flower heterocyst chrysanthemum extract are compounded to serve as plant bacteriostatic components, so that microbial florae causing the dandruff problem are effectively inhibited from growth and reproduction and killed, and the prepared composition has a prominent bacteriostatic effect; besides, the C10-15 alkanol polyether sodium sulfate, the capryloyl glycine, the potassium azelaic diglycinate and the coconut oil acyl hydrolyzed oat protein potassium are combined to be used as oil control components, and can be started from different aspects of removing dirt and grease, reducing grease secretion, inhibiting oil gloss and relieving scalp respectively, so that the prepared composition has an oil control effect. The raw materials selected under the design of the invention integrate antibacterial and oil control functions, and can also show a chip removal effect.

The invention discloses an electrode material for purifying and disinfecting drinking water as well as preparation and application thereof, and belongs to the technical field of drinking water purification. An Ag nano structure and an Au nano structure are sequentially constructed on a plastic base material, the electrode material is endowed with excellent antibacterial and catalytic performance, the Ag nano structure is formed through acid treatment and precursor solution soaking, and the preliminary antibacterial performance is endowed; the antibacterial effect is enhanced by micro-emulsion soaking; the microemulsion A and the solution B are mixed to prepare a spraying solution, a stable Au nanostructure is formed after spraying, an electrochemical oxygen reduction reaction is promoted, the H2O2 generation efficiency is improved, hydroxyethyl ethylenediamine triacetic acid and acrylamide are used in cooperation, the Au dosage and the complexing temperature are adjusted, a microcosmic honeycomb structure is formed, and the H2O2 concentration is remarkably improved. The electrode material has antibacterial performance, also has excellent conductivity and catalytic activity, is stable in purification effect before and after use, can be repeatedly used, and has wide application prospects in the fields of drinking water purification and the like.

The invention relates to a bacteriostatic washing machine tank cleaning block composition and a preparation method thereof, and the bacteriostatic washing machine tank cleaning block composition comprises the following components: peroxide salt, a surfactant, a chelating agent, an acid substance, modified silicon dioxide, an active oxygen activator, a release agent, an adhesive, a filler and water; wherein the modified silicon dioxide is obtained by firstly hydroxylating silicon dioxide, then carrying out esterification reaction with hexadecenoic acid and linolenic acid, and finally polymerizing with sodium acrylate. The modified silicon dioxide can generate mechanical friction with stubborn dirt to promote the dirt to fall off, a high-crosslinking-degree net-shaped organic chain segment formed on the surface of the modified silicon dioxide has amphipathicity, after the modified silicon dioxide is compounded with the surfactant and other components, a synergistic effect is generated to improve the decontamination effect, the compatibility of all the components can be improved, and the cleaning effect is improved. Falling stubborn dirt can be wrapped, and the decontamination effect is further improved; all the components are compounded, so that a good antibacterial effect and the like are achieved, and a good prospect is achieved.

The invention relates to the technical field of polymer composite materials, in particular to a degradable PPC-based composite film as well as a preparation method and application thereof. The degradable PPC-based composite film is prepared from polypropylene carbonate, bamboo powder and vinyl trimethoxy silane. Polypropylene carbonate (PPC) is adopted as a base material, bamboo powder is combined for filling, the prepared composite film can be completely degraded after being buried in natural soil for 5 months, and degradation products of the composite film do not pollute the environment; the bamboo powder is adopted as a reinforcing filler, has a certain bacteriostatic effect, and can be used for delaying the growth of microorganisms on the surface of food and improving the food safety and the fresh-keeping effect if being applied to the food fresh-keeping film. Compared with a pure PPC film, the composite film disclosed by the invention is improved in the aspects of mechanical property, thermal stability and glass transition temperature, and shows more excellent comprehensive performance.

The invention relates to the technical field of ink, and discloses polyurethane water-based ink and a preparation method thereof.The polyurethane water-based ink is obtained by adding water-based polyurethane resin, quaternary phosphonium salt modified imidazole, quaternized polyurethane, water-based pigment, a thickening agent, a flatting agent, a defoaming agent and deionized water into a stirrer and stirring. A quaternary phosphonium salt group and an imidazole group in the quaternary phosphonium salt modified imidazole have a relatively good antibacterial effect. A quaternary ammonium salt group in quaternized polyurethane also has a better antibacterial effect, and di (dimethylamino) methyl vinyl silane and 2-chloroethanol are subjected to quaternization reaction, so that the substitution degree of quaternary ammonium salt is improved, and the antibacterial effect of the quaternary ammonium salt is further improved; and the polyurethane structure also has relatively good wear resistance.

The invention relates to the technical field of antibacterial and wear-resistant fiber preparation, in particular to an antibacterial and wear-resistant polyamide fiber and a preparation method thereof.The preparation method of the antibacterial and wear-resistant polyamide fiber comprises the steps that 1, polyamide chips, ABS resin and graphene-loaded antibacterial filler are mixed and added into a screw extruder, melt spinning is conducted, and fiber is prepared through stretching and winding; and step 2, immersing the fiber prepared in the step 1 into a fiber finishing liquid, soaking, and drying to obtain the antibacterial wear-resistant polyamide fiber. The prepared antibacterial wear-resistant polyamide fiber not only shows an excellent antibacterial effect when being used for the first time, but also is still excellent in antibacterial property and durable in antibacterial property after being washed with water for multiple times. In addition, the fiber is excellent in mechanical property, wear resistance, wrinkle resistance, antifouling property and the like, and can meet the requirements of high-end textiles and functional garments.