46 results about "Hydrogen bonded network" patented technology

The invention belongs to the field of preparation of ionic hydrogen bond organic framework materials, and particularly discloses an ionic hydrogen bond organic framework material with proton conduction performance, the chemical formula of the ionic hydrogen bond organic framework material is {TPE-SO3H. 2 (DBD). 2 (DMF). 4 (H2O)} n, n is a positive integer, TPE-SO3H is 1, 1, 2, 2-tetrasulfonic acidphenyl ethylene, DBD is (C5NH4NH2) 22+, and DMF is N, N '-dimethylformamide. The structural unit belongs to a triclinic system, the space group is P-1, the molecular formula is C52H62N10O18S4, the cell parameters are as follows: alpha = 102.789 degrees, beta = 99.968 degrees and gamma = 112.169 degrees, each repetitive unit comprises four water molecules and two DMF molecules, two DBD molecules and one TPE-SO3H molecule, and amino groups on the DBD molecules and sulfonate groups on the TPE-SO3H molecule form a one-dimensional hydrogen bond network with water molecules. The material has good thermal stability, and has good performance for proton transportation. The invention discloses the preparation method of the material, the synthetic raw materials are easy to obtain, and the preparation process is simple. The ionic hydrogen bond organic framework material disclosed by the invention can be used as a proton conducting material and has a very good application prospect.

The invention discloses a cellulose-graphene composite transparent conductive film and a preparation method thereof. The invention firstly prepares a cellulose alkaline urine solution and then adds graphene, and the sodium hydroxide-urea hydrate formed by the alkaline urine solution in a subzero environment can be easily inserted into the interlayer region of the graphene and adhered to a host layer, thereby destroying the original hydrogen bond network, forming a new hydrogen bond network, realizing the layer-by-layer peeling of graphene, and obtaining a uniformly dispersed graphene-cellulosesolution. Then a crosslinking agent is added to form a cellulose-graphene gel, and a conductive film is obtained by hot press molding. The graphene and cellulose dispersed in the conductive film provided by the invention form a stable crosslinked structure under the action of a crosslinking agent, which can fully exert the conductivity of the grapheme. At the same time, excellent antibacterial properties, hot water resistance and anti-static function are additionally brought to the conductive film to build a highly transparent multi-functional conductive film with a wide application prospect.

The invention provides a polymer with the following hydrogen bond supermolecule net-structure, which has significant thermal restoring performance and good mechanical strength and elasticity, and facilitates the low temperature shaping process and cyclic utilization of the material. The synthesized oligomer is used as the skeleton of the hydrogen bond net-structured supermolecule polymer, and themain chain of the synthesized oligomer is provided with groups of hydrogen bond-forming factors such as carbonyl group (C=O), amino-group (-NH- or -NH2), sulfonyl group (O=S=O) and the like. Because the acting force of the hydrogen bond is much smaller than the force of the covalent bond, the length of the hydrogen bond is increased and the association speed is accelerated during the process of raising the temperature, so that the hydrogen bond supermolecule polymer has a lower melting point, thereby having better thermal restoring performance. In addition, though the single hydrogen bond force is smaller, the hydrogen bond supermolecule net-structure has good mechanical strength and elasticity due to the stable structure of the hydrogen bond supermolecule net-structure.

The invention discloses an alkyl long side chain-containing sulfonated polyaryletherketone sulfone and metal organic framework blended proton exchange membrane and a preparation method thereof, an alkyl long side chain with a sulfonic acid group is added to construct a hydrophilic/hydrophobic microphase separation structure, and then a metal organic framework is added as an organic-inorganic filler, the rigid framework of MOFs can restrain the movement of a polymer chain and enhance the dimensional stability of the composite membrane, and a hydrogen bond network in the framework can also provide a channel for proton migration and promote proton transmission. The specific composition of the hybrid membrane is as follows: sulfonated polyaryletherketone sulfone (C-SPAEKS-DBS) containing carboxyl and double bonds is taken as an organic matrix, 2-acrylamide-2-methylpropanesulfonic acid (AMPS) is taken as a side chain, Im-MOF-801 is taken as an organic-inorganic filler, and experiments show that the thickness of the prepared hybrid membrane is 75-90 [mu]m, the hybrid membrane shows excellent proton conductivity, and the hybrid membrane can be applied to the field of proton exchange membrane preparation. Compared with pure C-SPAEKS-DBS-AMPS (the temperature is 0.0487 S/cm<-1> at the 30 DEG C and 0.0809 S/cm<-1> at the 80 DEG C) and C-SPAEKS-DBS-AMPS-0. 5% Im-MOF-801 (the temperature is 0.1205 S/cm<-1> at the 30 DEG C and the temperature is 0.1992 S/cm<-1> at the 80 DEG C), the temperature is greatly improved and is about 2.5 times that of a pure membrane.

The invention relates to a LIM low-oil-powder-separation high-electric-conductive silicone rubber composition including: 100 parts of first organo-polysiloxane, 5-25 parts of second organo-polysiloxane, 15-25 parts of first white carbon black, 2-8 parts of second white carbon black, 5-10 parts of silazane, 1-2 parts of water, 0.05-0.15 parts of a platinum-based catalyst, 0.005-0.01 parts of an inhibitor, 250-500 parts of a metal-based electric-conductive filler, 1-10 parts of a silane coupling agent, and 5-50 parts of a volatile diluent. By adding the silane coupling agent, compatibility between the first organo-polysiloxane and the metal-based electric-conductive filler is improved, and then the second white carbon black is added to form a hydrogen bond network, thus cooperatively reducing the oil-powder separation between the first organo-polysiloxane and the metal-based electric-conductive filler. The composition can be used for injection moulding of complex products and can improvequalification rate of the products. In addition, the invention also provides a preparation method of the LIM low-oil-powder-separation high-electric-conductive silicone rubber composition. The methodincludes the steps of preparing base rubber, preparing a component A, preparing a component B and shaping the composition.

The invention discloses a V2O5 nanobelt with a hydrogen bond network. Ammonium ions are embedded into a V2O5 interlayer structure, hydrogen bonds are formed between hydrogen atoms in the ammonium ions and oxygen atoms in V2O5 to construct a hydrogen bond network, and the width of the nanobelt is 10-60 nm. A preparation method comprises the following steps: dissolving V2O5 powder in deionized water to form a uniformly dispersed yellow suspension; adding H2O2 into the obtained yellow suspension, and performing stirring and dissolving to form a uniformly dispersed orange solution; and adding ammonium salt into the orange solution, performing uniform stirring, performing heating, performing hydrothermal reaction, performing centrifugally separation and washing, and performing freeze-drying to obtain a final product. By introducing the ammonium ions, the V2O5 with the hydrogen bond network is successfully prepared, so that proton storage based on hydrogen bonds is increased, and the electrochemical performance of the aqueous zinc ion battery is remarkably improved.

According to a method for preparing the high-strength regenerated fiber paper through a solution membrane casting method, plant fibers are smashed through a smashing machine and then mixed and stirred with a low-temperature sodium hydroxide/urea solution according to a certain proportion, then a mixed viscous solution is poured into a mold to be subjected to solution membrane casting, the obtained solid matter is put into a 2%-30% regeneration solution at the temperature of 20-50 DEG C, standing is conducted for 5-15 min, and hydrogen bond network reconstruction and demoulding and static solidification are carried out; and the tensile index, the tearing index, the burst index and the folding strength of the high-strength regenerated fiber paper prepared through the cellulose dissolving and regenerating series process are improved by 680%, 1212%, 260% and 2450% at most respectively compared with paper sheets prepared through a paper pulp soaking deionized water wet-process papermaking process, and are improved by 164%, 517%, 260% and 1600% at most compared with the paper pulp prepared by adopting a low-temperature sodium hydroxide/urea solution treatment, dissolved cellulose regeneration and wet-process papermaking process. The design is novel, the process is reasonable, and the application effect is good.

The invention belongs to the field of polymer composite materials, and relates to a polymer hydrogel film with piezoelectric property and preparation and application thereof. The invention provides a high-molecular hydrogel film with piezoelectric property, the high-molecular hydrogel film comprises an outer layer and an inner layer, the outer layer is high-molecular hydrogel, and the inner layer is a piezoelectric polymer film. The invention provides a novel high-molecular hydrogel film with piezoelectric property, and due to the characteristic of high hydration of hydrogel, a molecular chain can more strongly capture surrounding water molecules to influence a hydrogen bond network in water so as to activate the water; in addition, due to the fact that the hydrogel film has the piezoelectric property, by means of the piezoelectric property of the film, the film can continuously convert wave energy in the ocean into electric energy, the electric energy can be used for further activating water which is activated by the hydrogel and located around molecular chains, and meanwhile unaffected water which is far away from the molecular chains in the hydrogel can be activated; energy required by water evaporation is reduced again, and the water evaporation process is promoted synergistically.

The invention discloses stretchable conductive hydrogel with high water-retaining property and a preparation method thereof. According to the hydrogel, on the basis that polyacrylamide-acrylic acid serves as a first network, carboxymethyl hydroxyethyl cellulose is introduced to form a second network, metal ions are introduced, and the metal ions can be subjected to ionic crosslinking with carboxyl groups on two molecular chains of cellulose and polyacrylamide-acrylic acid. The carboxymethyl hydroxyethyl cellulose is introduced to greatly increase the density of hydroxyl in the system, so that a stable hydrogen bond network is established. And the introduced carboxymethyl hydroxyethyl cellulose can be used as a second network, and can effectively dissipate energy during stretching. The prepared hydrogel has excellent conductivity and tensile property, the conductivity is as high as 3.0 S/m, the elongation at break can reach 1500%, and the hydrogel has excellent water retention capacity (greater than 70%). The method is simple in technological process, short in preparation period and wide in application range, and can be widely applied to flexible strain sensors and other flexible electronic devices.

The invention provides a metal organic framework crystal film for an all-vanadium redox flow battery, and belongs to the technical field of vanadium redox flow batteries. The crystal film is a compact and uniform MOF film prepared from an MOF material. Due to a window structure of a sub-nanometer size and a hydrogen bond network formed by adsorbed water molecules, the MOF membrane shows excellent ion screening performance and mass transfer rate. When the diaphragm is applied to VFB as a flow battery diaphragm for further detection of the electrochemical performance of the diaphragm, stable charge-discharge cycle can be carried out. The invention provides a new thought for the development of the flow battery diaphragm.

The invention discloses a thin film, a preparation method thereof and a quantum dot light-emitting diode, the thin film comprises a metal organic framework layer and quantum dots embedded in pores of the metal organic framework layer, and acidic ions or acidic molecules are combined in the metal organic framework layer. The film provided by the invention adopts the metal organic framework layer combined with acidic ions or molecules as a supporting structure, and the acidic groups and a main body framework form a dense and strong hydrogen bond network, so that high-speed conduction of protons is realized, transmission of hole carriers is facilitated, injection balance of holes and electrons is improved, and finally, the performance of the quantum dot light-emitting diode is improved.

The invention discloses a thermal repair coating and a preparation method and application thereof. The thermal repair coating provided by the invention comprises the following raw materials in parts by weight: 175 to 300 parts of isocyanate; 150 to 250 parts of hydroxyl polyether polyol; 10 to 20 parts of organic silicon modified acrylate; 10 to 30 parts of a catalyst; 90 to 110 parts of a chain extender; and 600 to 750 parts of a solvent. The thermal repair coating has denser hydrogen bonds, a polyurethane coating formed after heating and curing has a very dense hydrogen bond network structure, after being damaged by external force, the thermal repair coating can achieve a self-repair effect through temperature rising and heating, the used raw materials are easy to obtain, the synthesis operation is simple, and the thermal repair coating is suitable for industrial production and application.

The invention relates to editing oligonucleotides (EONs) that carry stereospecific phosphorothioate internucleotide linkage modifications at specified positions and that do not carry such modifications on positions that would lower RNA editing efficiency. The selection of positions that should or should not carry a phosphorothioate Rp and/or Sp configuration modification is based on computational modelling that revealed incompatibilities of the stereospecific linkages with the intermolecular oxygen-mediated hydrogen bond network.

The invention relates to a polyether functionalized cyclodextrin-based organic catalyst and a preparation method thereof, and provides a concept of function enhancement based on a hydrogen bond blocking mechanism by utilizing the characteristic of dynamic reversibility of hydrogen bonds in order to improve the problem of low effective utilization rate of traditional cyclodextrin and functionalized derivative catalysts thereof due to an intermolecular hydrogen bond network. A novel cyclodextrin-based organic catalyst with enhanced polyether organic alkali salt function is created by assembling a hydrogen bond blocking group'polyether functionalized organic alkali 'with high flexibility into molecules of cyclodextrin; a large number of ether bond oxygen atoms on a polyether chain are used as hydrogen bond receptors, so that the ether bond oxygen atoms and hydroxyl groups on the hydrophilic outer wall of cyclodextrin preferentially form intramolecular hydrogen bonds, thereby effectively blocking the formation of a cyclodextrin intermolecular hydrogen bond network and improving the effective utilization rate of the cyclodextrin-based organic catalyst; as an efficient organic catalyst, the polyether functionalized cyclodextrin can be applied to various organic synthesis reactions.

The invention relates to the field of nano carbon composite materials, particularly to a graphene/SEBS composite material with high-strength and high-damping characteristics, and a preparation methodof the graphene/SEBS composite material. The preparation method comprises the following steps: modifying multiple hydrogen bond molecules on the surface of graphene to obtain multiple hydrogen bond molecule grafted graphene nanofiller; introducing the multiple hydrogen bond molecules into an SEBS molecular chain segment through a grafting reaction to obtain SEBS grafted by the multiple hydrogen bond molecules; and finally mixing the multiple hydrogen bond molecule grafted graphene and SEBS in an organic solvent system by a solution blending method, uniformly stirring, removing the solvent, andcarrying out hot press molding to obtain the graphene/SEBS composite material. According to the invention, a hydrogen bond network is formed at the interface of each component in the composite material, and the graphene nanofiller and the hydrogen bond network synergistically play a role, so that the mechanical property of an SEBS matrix is remarkably enhanced, the viscoelastic damping property of the composite material is remarkably improved, and the graphene/SEBS composite material has an important application prospect in the field of high-performance damping engineering materials.

The invention relates to a dissolution regeneration and stable dispersion system of monomolecular cellulose. In order to separate and obtain monomolecular chain cellulose and large-scale application of the monomolecular cellulose, adenine cations of prepared high-charge nitrogen-rich adenine trifluoromethanesulfonic acid ionic liquid [Aden] (CF3SO3) 3 have three positive charges, one adenine cation [Aden] < 3 + > can be simultaneously complexed with three O atoms on three hydroxyl groups of cellulose molecules, and a-NH2 group and a-NH-group of the adenine cation [Aden] < 3 + > and an anion CF3SO3- simultaneously form a new hydrogen bond network with H atoms on the hydroxyl groups of the cellulose molecules; the high-charge nitrogen-rich adenine ionic liquid [Aden] (CF3SO3) 3 can dissolve cellulose within a short time in a low temperature range including room temperature. According to a prepared polyethylene glycol lauric acid histidine ester dispersion stabilizer, the cellulose molecules are uniformly dispersed without hydrogen bond aggregation when being separated out from the ionic liquid, and after the cellulose is centrifugally separated, single cellulose molecules still exist stably under the dispersion effect of the polyethylene glycol lauric acid histidine ester dispersion stabilizer.

The invention discloses an amino-containing polyaryletherketone sulfone/cationic metal organic framework anion exchange membrane for a fuel cell. The mass ratio of amino-containing polyaryletherketone sulfone to cationic D-UiO-66-NH2 is 1: (0.005-0.02), and the prepared polyaryletherketone sulfone polymer contains amino, so that formation of a hydrogen bond network can be promoted, and the hydrogen bond network can help to inhibit swelling of the membrane and further promote formation of an ion transmission channel; and the cationic group contained on the prepared cationic D-UiO-66-NH2 can also help to construct an ion transmission channel, the ionic conductivity is further improved while the mechanical stability of the membrane is improved, and experimental results show that the ionic conductivity of the anion exchange membrane at the temperature of 80 DEG C is 0.129-0.184 S cm <-1 >, the thickness of the anion exchange membrane is 25.3-35.67 mu m, and the ionic conductivity of the anion exchange membrane at the temperature of 80 DEG C is 0.129-0.184 S cm <-1 >, thereby indicating the application potential of the anion exchange membrane in fuel cell devices. The researched PAEK-based anion exchange membrane is a good candidate material for AEMFC development. The anion exchange membrane is expected to be applied to the field of fuel cells.