38results about How to "Excellent shape recovery performance" patented technology

Thermoplastic polyurethanes having an alternating sequence of hard and soft segments in which a nanostructured polyhedral oligosilsesquioxane diol is used as a chain extender to form a crystalline hard segment constituting SMPs. The polyurethanes are formed by reacting a polyol, a chain extender dihydroxyl-terminated polyhedral oligosilsesquioxane and a diisocyanate. The polyurethanes have multiple applications including for example, implants for human health care, drug delivery matrices, superabsorbant hydrogels, coatings, adhesives, temperature and moisture sensors, etc.

The invention relates to a high-strength self-repair hydrogel preparation method, which comprises: 1, preparing a polyvinyl alcohol, agar and acrylic acid composite solution; and 2, preparing a high-strength self-repair three-network hydrogel. According to the present invention, the high-strength hydrogel is prepared by using the one-pot method through polymerization, cooling and freezing-thaw cycle, wherein the three polymers provide the effects of hydrogen bonding and macromolecular entanglement so as to make the hydrogel have high mechanical strength; during the preparation, iron ions are added, and can form the good coordination effect with the carboxyl group of the polyacrylic acid, such that the hydrogel has good self-repair property; the prepared polyacrylic acid/agar/polyvinyl alcohol three-network hydrogel has advantages of high mechanical strength and good self-repair performance, simple preparation process, wide raw material source, low cost and environmental protection, andcan be used as tissue engineering, scaffold repair materials, agricultural sensors and the like, and can be widely used in biomedical materials, agricultural materials and other fields.

Temperature-variable multi-color sponge for a powder puff and a preparing process thereof are disclosed in embodiments of the invention, belonging to the technical field of polymer materials. The sponge includes two or more raw materials groups. Each raw material group includes an A component and a B component in a weight ratio of 1.5-2.5:0.8-1.2, wherein the A component includes, by weight, 40-50% of a filler, 1.7-4% of a surfactant, 1-2% of an emulsifier, 0.5-1% of temperature sensing toner powder, and 0.3-1% of water-based color paste, with the balance being water; the B component is a hydrophilic polyurethane prepolymer; and the sponge includes two or more types of temperature sensing toner powder. The sponge enables no dispersion of the toner powder, shows color of the added temperature sensing toner powder, has good physical properties, low smell grade, good environment protection performance, good shape recovery capability and touch sense, and is suitable for cosmetics.

The invention discloses a cryogel for stopping bleeding and bearing an anti-cancer drug and a preparation method thereof, the preparation method comprises the following steps: a double bond is modified to a biomacromolecule, a polyphenolic compound is grafted onto the biomacromolecule, and the dopamine molecule and the Zn 2 + ion are coordinated to prepare dopamine-modified ZIF -8; and all the components are respectively prepared into aqueous solutions or dispersion solutions, and then under the action of an initiator, through double-bond polymerization, the multifunctional water/blood triggered shape memory cryogel l is formed at low temperature. According to the preparation method, polysaccharide and other biomacromolecules with good biocompatibility and degradation performance are taken as the basis, the process of chemical grafting of double-bond or polyphenol compounds also has the characteristics of low toxicity and no pollution, the used double-bond functionalized biomacromolecules are simple to prepare, the synthesis technology is mature, and the prepared product has good universality.

The invention discloses a shape memory high polymer material with eucommia ulmoides rubber and a preparation method of the shape memory high polymer material. The shape memory high polymer material comprises the following raw materials in parts by weight: 100 parts of eucommia ulmoides rubber, 10-30 parts of a functional filler, 0.5-3 parts of a vulcanizing agent and 0-5 parts of a processing aid,wherein the eucommia ulmoides rubber is carboxyl modified eucommia ulmoides rubber; and the functional filler is one or more of microcrystalline cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, starch, water-soluble chitin and gelatin. The invention further discloses the preparation method of the high polymer material. Through a hydroxyl reaction of functionalcarboxyl on the carboxyl modified eucommia ulmoides rubber with the surface of the functional filler, not only is a thermotropic shape memory property of a conventional base material retained, but also the high polymer material has a function of responding to water stimulation, the high polymer material has a property of synergetic response to dual stimulation of water and heat, mechanical properties can be improved, and the application range can be widened.

Provided is a cosmetic puff whose cosmetic application side uses a double raschel knitted fabric knitted from polytrimethylene terephthalate fibers to a 28 gauge, so that the cosmetic puff offers more flexibility and better shape restorability, transfers as much of the scraped-off cosmetic as possible to the skin and consequently maintains a clean puff surface after use, and demonstrates excellent washing resistance, as well.

The invention provides a damping chassis of a bulk fodder transport cart. The damping chassis comprises a cart frame and a fodder tank arranged on the cart frame. The damping chassis is characterized in that a set of thrust plates and four sets of tank mounting supporting feet are symmetrically arranged on longitudinal beams on the two sides of the cart frame; the contact face of the upper ends of the longitudinal beams and the fodder tank is provided with flat tape; the flat tape comprises a framework layer; the upper end face of the framework layer is coated with a first resin layer, and the upper end face of the first resin layer is coated with a base cloth layer; and the lower end face of the framework layer is coated with a second resin layer, the lower end face of the second resin layer is coated with a base cloth layer, and the lower end face of the base cloth layer is coated with an adhesive layer. The chassis assembly can be directly used for assembling of the fodder tank, the thrust plates can be used for limiting and keeping the stability of the tank, the flat tape arranged between the tank and the cart frame is of a multi-layer buffer structure, the shape restorability is good, layering and aging are not liable to occur, and the service life is long.

The invention discloses an X-shaped connection double-limb buckling-restrained brace, and relates to the technical field of earthquake resistance and disaster prevention of building structures. The X-shaped connection double-limb buckling-restrained brace comprises a buckling-restrained brace member part, a reset connecting piece and an X-shaped connecting piece. According to the X-shaped connection double-limb buckling-restrained brace, four independent buckling-restrained brace members ingeniously form the X-shaped connection double-limb buckling-restrained brace through reset connection and X-shaped connection, the energy dissipation and shock absorption capacity of a single buckling-restrained brace is reserved, and meanwhile, the overall energy dissipation and shock absorption capacity of the buckling-restrained brace is improved through the ingenious design of the reset connection part and the X-shaped connection part; and the buckling-restrained brace has certain self-resetting capacity after the structure is subjected to load action such as earthquake through springs, and the secondary energy dissipation and shock absorption capacity of the buckling-restrained brace is improved.

The invention relates to a method for preparing a cellulose nanocrystalline sponge material. The method comprises the following steps: 1) mixing pretreated biomass cellulose with mixed acid, performing a reaction for 2-10 hours at 50-130 DEG C, after the reaction is completed, performing water washing and centrifugal treatment, and adjusting the pH value of the mixed liquid to be 7 so as to obtain a cellulose nanocrystalline suspension; and 2) pouring the obtained cellulose nanocrystalline suspension into plastic molds of different shapes, and performing freeze-drying, thereby obtaining the cellulose nanocrystalline sponge material of a designed shape. The material is simple and feasible and rapid and efficient in preparation process, is extracted from biomass cellulose, is capable of turning waste into wealth, is green, environmental-friendly and reproducible, and can be degraded in a multifunctional complete biological manner. The obtained cellulose nanocrystalline has the characteristics of an ultra-high length-diameter ratio, a shape of a long nanowire, molecular chain windable self-assembling molding, massive nanocrystalline surface modification groups, an efficient netting effect and the like.

The invention provides a color-changing upper sealing plate for a plastic heat-insulating bottle plug. The upper sealing plate is produced by compounding the raw materials in parts by weight: 45 parts of PVC (polyvinyl chloride), 12 parts of polyester resin, 1.5 parts of epoxy resin, 0.5 part of ferric hydroxide, 1.5 parts of pigment, 2.5 parts of titanium dioxide, 2.5 parts of ultra-fine barium, 1. 2 parts of flatting agent, 0.8 part of brightener, 0.1 part of graphene, 1.2 parts of nano-titanium nitride, 3.5 parts of nanosilicon dioxide, 0.8 part of rare-earth mixture, 0.5 part of phosphotungstic acid, 0.5 part of quartz and 2.5 parts of modified zeolite powder. The upper sealing plate provided by the invention has the characteristic of color changing along with temperature, such that the temperature of a plug body can be judged according to the color change; the raw material components are reasonable in proportion; graphene nanoplatelets are added to promote the coloring performance of a material, such that the material has excellent chemical resistance and weather resistance; the modified zeolite powder is added to ensure that the material is dispersed more easily in a compounding manner; the temperature of the extrusion compounding process is reduced; the upper sealing plate has a natural color, high strength and good cracking resistance.

The invention discloses a solar cell graphite boat electrode holder and a solar cell graphite boat. Steel sheets are respectively arranged on the outer sides of clamping pieces of the electrode holder and the two steel sheets are connected through a welding block to limit the loosening position of the clamping pieces, and due to the fact that the steel sheets are good in elasticity and shape recovering capacity, the steel sheets play a certain role in calibrating the clamping pieces, deformation of the electrode holder is prevented, generation of chromatic aberration pieces caused by the deformation of the electrode holder is avoided, the service life of the electrode holder can be greatly prolonged, and production cost is reduced.

The invention provides a composite resin aerogel, which is obtained by compounding an organic resin prepared from glycidyl methacrylate, divinyl benzene and ethylene glycol dimethacrylate with activated cellulose, then modifying with 3-alpha-furyl acrylic acid, and carrying out circulating freeze drying; or compounding the activated cellulose with organic resin, modifying with 3-alpha-furyl acrylic acid, loading a photocatalyst, and carrying out circulating freeze drying to obtain the product. The invention further provides a specific preparation method of the composite resin aerogel and an application method of the composite resin aerogel in sewage treatment, the process is simple, the effect is excellent, the aerogel is wrapped in the stainless steel grids, so that the contact area between the aerogel and sewage is large enough, the integrity of the aerogel is protected, and the aerogel can be repeatedly used; the composite resin aerogel is high in porosity, large in specific surface area, excellent in shape recovery performance, excellent in heavy metal ion adsorption performance, capable of being resolved and regenerated, capable of being recycled for multiple times and good in application potential.

The invention discloses an antirust master batch and a preparation process thereof. The antirust master batch is prepared from, by weight, 43-57 parts of carrier resin, 31-39 parts of an antirust agent and 12-18 parts of an assistant, wherein the carrier resin is prepared from, by weight, 100 parts of polypropylene, 7-20 parts of polyethylene, 2-15 parts of coumarone resin and 5-10 parts of modified polyurethane. According to the invention, through setting of the components and the proportions, processes and parameters of the components, the prepared antirust master batch has relatively high antirust performance, mechanical strength and mechanical property; the basic performance is provided for the prepared gas-phase antirust film; the tearing damage of the prepared gas-phase antirust filmis avoided; meanwhile, some raw materials do not need to be added for functional compensation, and the prepared antirust master batch further has certain viscosity and sealing performance, so that the prepared gas-phase antirust film can adsorb and get close to metal and metal products, the gaps between the gas-phase antirust film and the metal and metal products are reduced and dried, the effects of isolating air and preventing corrosion are achieved, and the gas-phase antirust master batch is suitable for wide application and popularization.

The invention discloses a preparation method of a transparent self-adaptive shape memory polymer anti-wrinkle body film solution. The preparation method comprises the following steps: conducting drying treatment on DMF (dimethyl formamide) by virtue of a molecular sieve (as shown in Description), so that dried DMF is obtained, vacuum dehydrating liquid PCL (polycaprolactone) in a reaction container, then adding the dried DMF and MDI (diphenylmethane diisocyanate) under a condition of argon protection, and conducting reacting under stirring at 70-80 DEG C for 1.5-2.5h, so that a prepolymer is obtained; adding 1,4-BDO (1,4-butanediol) and the dried DMF to the prepolymer, and conducting a chain extension reaction under a condition of 70-80 DEG C, so that a linear SMPU (shape memory polyurethane) solution which contains 13-18% of solids is obtained; uniformly coating a glass plate with the linear SMPU solution, performing drying in an oven at 70-100 DEG C for 12-15h, and conducting placing at room temperature for 22-26h, so that shape memory polyurethane is obtained; and adding the shape memory polyurethane and the dried DMF to a reaction flask, preparing a solution which contains 5-10% by mass of the shape memory polyurethane, and performing magnetic stirring until the polyurethane is completely dissolved, so that the shape memory polymer anti-wrinkle body film solution is obtained.

The invention discloses a water stimulation response rubber composite material and a preparation method thereof. The rubber composite material comprises the following raw materials in parts by weight:30-80 parts of nitrile rubber, 20-70 parts of polyethylene oxide, 0.8-1.6 parts of a vulcanizing agent and 0-5 parts of a processing aid. The invention further discloses a preparation method of the rubber composite material. The rubber composite material is prepared from the raw materials through mixing and vulcanization. A conventional rubber high polymer material and a functional high polymer material are compounded to prepare the rubber composite material with water stimulation response through mixing and vulcanization, the rubber composite material is a novel stimulation response rubber composite material, the utilization value of a shape memory high polymer material can be increased, the rubber composite material has a uniform texture, is of a cross-linked network structure, is freeof problems such as delamination, has a transition temperature interval between room temperature and body temperature constantly, has good properties of shape memory fixation and shape recovery, and can be widely applied to fields such as biological medical treatment.

Disclosed is a curable resin composition that includes radical polymerizable monomers including a monofunctional radical polymerizable monomer, a linear or branched polymer containing a polyoxyalkylene chain, and a radical polymerization initiator.