26 results about "Adipamide" patented technology

The invention belongs to the technical field of lithium ion battery solid electrolytes, and discloses a multi-component in-situ polymerized gel solid electrolyte and a preparation method and application thereof, the gel solid electrolyte is prepared by adding an amide cross-linking agent and a polymeric monomer into a basic electrolyte to obtain a precursor solution, then adding an initiator, and carrying out in-situ polymerization at 45-70 DEG C for 6-12 hours, the amide cross-linking agent is one or more of N, N '-methylene bisacrylamide, polyacrylamide, poly (2-acrylamide-2-methyl-1-propanesulfonic acid), polymethacrylamide, polyethylene glycol diacrylamide, polyether amide or adipamide. The first coulombic efficiency of an LCOLi button cell assembled by the multi-component in-situ polymerization solid-state gel electrolyte reaches 94.81%, the capacity retention rate after 500 cycles at 3-4.6 V still reaches 80% or above, and the LCOLi button cell can safely pass a needle test and can be applied to the field of solid-state electrolytes.

The invention belongs to the technical field of high polymer materials and electric power engineering protection, and particularly relates to an MPP power cable protection pipe containing a rare earth anti-aging system and a preparation method of the MPP power cable protection pipe. The protection tube is composed of rare earth coordination modified polypropylene, N, N '-bis (2-hydroxyethyl) adipamide, an antioxidant 1010, a light stabilizer 622, a hindered amine light stabilizer 944, a lubricant and an anti-ultraviolet absorbent. Rare earth ions and polypropylene grafted maleic anhydride form a stable coordination structure, small organic molecules enhance interface bonding through hydroxyl and acylamino hydrogen bonds, and multi-point stability of molecular chains is achieved. The thermal oxidation resistance, ultraviolet aging resistance and thermal deformation resistance of the material are remarkably improved, and the prepared cable protection tube has excellent mechanical strength, heat resistance and long-term weather resistance.

The application belongs to the field of polymer materials and power engineering protection technology, and particularly relates to a MPP power cable protection pipe containing a rare earth anti-aging system and a preparation method thereof. The protection pipe is composed of rare earth coordination modified polypropylene, N,N'-bis(2-hydroxyethyl)adipamide, antioxidant 1010, light stabilizer 622, hindered amine light stabilizer 944, lubricant and ultraviolet absorption agent. Rare earth ions and polypropylene grafted maleic anhydride form a stable coordination structure, and organic small molecules enhance the interface combination through hydrogen bonds of hydroxyl and amide groups, so that the molecular chain is stably connected at multiple points. The application significantly improves the thermal oxidation resistance, ultraviolet aging resistance and thermal deformation performance of the material, and the prepared cable protection pipe has excellent mechanical strength, heat resistance and long-term weather resistance.

The invention provides an N, N, N ', N'-tetra (2-hydroxypropyl) adipamide curing agent as well as a preparation method and application thereof, and belongs to the technical field of powder coating curing agents. The curing agent is prepared from dimethyl adipate, diisopropanolamine, a catalyst and a solvent through atomization feeding, normal-pressure staged reaction and staged crystallization. The preparation method has the advantages of simple process, no need of vacuumizing in the whole process, good synthesis reaction effect, high product yield and purity and few byproducts, and can be used in the high-temperature-resistant powder coating, and the cured coating film has excellent high-temperature yellowing resistance and good surface fineness, and can be used in the field with high requirements on high-temperature yellowing resistance and appearance.

The invention relates to the field of engineering plastic composite materials. The invention relates to a low-warpage toughened polyhexamethylene adipamide material and a preparation method thereof. The preparation method comprises the following steps: synergistically compounding polyhexamethylene adipamide, glass fiber, polyhexamethylene adipamide-silicon dioxide reaction composite master batch and maleic anhydride grafted ethylene-1-octylene copolymer master batch, and carrying out reactive extrusion and blending granulation to obtain granules. The warping amount of a flat plate part formed by material injection molding is 0.10-0.60 mm, and the notch impact strength is 8-25 kJ / m. The problem that low warping and toughening of the polyhexamethylene adipamide glass fiber reinforced material are difficult to consider at the same time is solved. The method is suitable for injection molding products.

The invention relates to the technical field of plastics, in particular to an ultrathin micro-texture mobile phone rear cover plate and a preparation method thereof. The method comprises the following steps: carrying out end group regulation on polyhexamethylene adipamide resin through hexamethylene diamine, and carrying out melt blending on the polyhexamethylene adipamide resin, tetraethyl orthosilicate and hydroxyl-terminated polydimethylsiloxane through a sol-gel reaction to obtain hybrid inorganic powder; hydroxyl-terminated polydimethylsiloxane and hexamethylene diisocyanate are sequentially added by adopting a step-by-step feeding strategy for modification. And then molding in a mold with micro textures through an injection molding-compression molding process, and carrying out limited annealing treatment. According to the invention, the problems of incomplete micro-texture copying, easy scratching and poor thermal dimensional stability of the ultrathin plate are effectively solved, and high-precision texture transfer, excellent surface scratch resistance and long-term flatness of the plate with the thickness of 320-380 microns are realized.

The invention discloses a sunshade composite fabric for a vehicle skylight and a preparation method of the sunshade composite fabric, and relates to the technical field of composite fabrics. The composite fabric is of a three-layer structure and is obtained by sequentially attaching a surface layer, an anti-ultraviolet middle layer and a base cloth layer. The anti-ultraviolet middle layer is prepared from polyamide fibers, and the polyamide fibers are prepared from the following raw material components in parts by mass: 40 to 50 parts of polyhexamethylene adipamide, 40 to 50 parts of modified polycaprolactam, 5 to 8 parts of modified titanium dioxide, 1 to 2 parts of an antioxidant and 1 to 1.5 parts of a heat stabilizer. Polyhexamethylene adipamide, modified polycaprolactam, an antioxidant, modified titanium dioxide and a heat stabilizer are added into a spiral extrusion rod to be mixed, melt spinning and winding forming are conducted, and polyamide fibers are formed; and weaving to obtain the anti-ultraviolet middle layer. The prepared anti-ultraviolet middle layer has excellent ultraviolet resistance and impact resistance, and can achieve a certain roof protection effect while meeting the sunshading requirement of the composite fabric.

The invention discloses a light-weight automobile bumper and a preparation method thereof. The light-weight automobile bumper is prepared from the following raw materials in parts by weight: 45-70 parts of polypropylene resin and 5-20 parts of polyhexamethylene adipamide. 25 to 40 parts of carbon fiber; 0.05 to 0.1 part of graphene; 0.5 to 2 parts of an antioxidant; 0.2 to 2 parts of pigment; 1-5 parts of a compatilizer; the density of the light-weight automobile bumper is 1.0-1.2 g / cm < 3 >, the bending modulus is 11.5-15.0 GPa, the impact strength is 9.5-11.0 kJ / m < 2 >, and the tensile strength is 83-105 MPa, and the light-weight automobile bumper has the characteristics of light weight and proper strength and toughness, has good rigidity and toughness, and can reduce the injury to pedestrians to the greatest extent during collision.

The invention discloses a low-shrinkage PA-ABS (polyamide-acrylonitrile-butadiene-styrene) alloy material and a preparation method thereof, the composition is prepared from the following components in parts by mass: 35-48 parts of polyhexamethylene adipamide matrix resin and 5-12 parts of polycaprolactam matrix resin; 25 to 38 parts of an acrylonitrile-butadiene-styrene copolymer; 3 to 6 parts of an ethylene-ethyl acrylate-maleic anhydride (E-EA-MAH) terpolymer; 0.8 to 2.2 parts of composite reinforcing filler; 0.3 to 0.9 part of a light stabilizer bis [2, 2, 6, 6-tetramethyl-4-piperidyl] sebacate; 0.1 to 0.5 part of a release agent ethylene bis stearamide; and 1.2 to 2.8 parts of an interface compatibilizer. According to the invention, through multi-component collaborative design and interface engineering regulation and control, a multi-layer interaction network is constructed, a terpolymer containing an epoxy group and a block structure compatibilizer are further introduced, interface reaction and energy dissipation between PA and ABS are promoted, and through nanoscale gradient interface design of a release agent and a filler, the release agent and the filler are combined, so that the release agent and the filler are combined, and the release agent and the filler are combined. And the interface friction and residual stress in the forming process are obviously reduced.

This invention provides a continuous preparation method for N,N,N',N'-tetra(2-hydroxyethyl)hexamethylenediamide. Diethanolamine and a sodium methoxide catalyst are mixed in a first mixer, then mixed with dimethyl adipate in a second mixer before entering a continuous reactor for synthesis. After the reaction, the crude product is passed through a falling film evaporator for further reaction and removal of unseparated methanol byproducts, yielding high-purity liquid N,N,N',N'-tetra(2-hydroxyethyl)hexamethylenediamide. Finally, the product is granulated to obtain solid, commercially available granules. This invention solves the problem of continuous production in existing technologies, offering advantages such as short synthesis time, continuous granulation, and elimination of subsequent solidification, crushing, drying, and granulation processes, thus improving equipment efficiency.

The invention discloses a preparation process and application of a polyphosphate polyol. The invention conducts Schiff base polymerization reaction of adipic acid amide dibenzaldehyde monomer and 4,4-diaminodiDOPO, and performs end-capping reaction of amino alcohol compounds such as ethanolamine to obtain a novel polyphosphate polyol. Further, polymerization reaction is carried out with a diisocyanate compound to obtain a phosphorus-containing polyurethane having excellent flame retardant properties. Further, nylon 6 is used to fill and modify the phosphorus-containing polyurethane to obtain a polyurethane / nylon composite material. The phosphorus-containing polyurethane has good compatibility and interface bonding force with nylon 6, and significantly improves the tensile strength, bending strength and other mechanical properties of the polyurethane.

The invention discloses a halogen-free flame-retardant polyamide composition as well as a preparation method and application thereof, and relates to the technical field of high polymer materials. The halogen-free flame-retardant polyamide composition is prepared from the following components in parts by weight: 34 to 56 parts of polyterephthalamide resin; 33 to 56 parts of poly (m-xylylenediamine adipate) resin; 4-16 parts of an organic hypophosphite flame retardant; 4-52 parts of flat glass fiber; 4-52 parts of a flaky filler; the mass ratio of the flat glass fibers to the flaky filler is (0.6-4): 1; the flatness ratio of the flat glass fibers is (2-6): 1. The halogen-free flame-retardant polyamide composition disclosed by the invention has excellent mechanical properties and cold and hot impact cracking resistance.

The present invention provides an N,N,N',N'-tetrakis(2-hydroxypropyl) adipamide curing agent, a preparation method thereof and an application thereof, belonging to the technical field of powder coating curing agents. The curing agent is obtained by atomizing and feeding dimethyl adipate, diisopropanolamine, a catalyst and a solvent, and carrying out stepwise reaction under normal pressure and stepwise crystallization. There is no need to evacuate the vacuum throughout the process, the synthesis reaction effect is good, the product yield and purity are high, and the by-products are few. When used in high-temperature resistant powder coatings, the cured coating film has very excellent high-temperature yellowing resistance performance, and the surface fineness is good, and it can be used in fields with high requirements for high-temperature yellowing and appearance.

The invention provides a reinforced nylon composite material as well as a preparation method and application thereof, and belongs to the technical field of composite materials. According to the invention, the polyadipyl m-xylylenediamine and the inorganic fiber are used as a composite stiffening agent, so that the strength and modulus of the nylon composite material are enhanced; a main antioxidant, an auxiliary antioxidant and an anti-photoaging agent are introduced into the composite additive, so that the nylon composite material has excellent apparent property and excellent forming stability, the product forming time can be effectively shortened, the size stability can be improved, and the problem that the size is unstable after nylon absorbs moisture is solved; meanwhile, basic magnesium sulfate whiskers in the composite additive are combined, and the basic magnesium sulfate whiskers have the characteristics of high rigidity, low density, low warpage and the like; under the auxiliary action of the composite lubricant, the obtained nylon composite material has the advantages of high strength, high modulus, impact resistance, low warpage, low density, high apparent property, excellent dimensional stability and excellent comprehensive performance, and can be widely applied to materials such as plastics instead of steel.

This application relates to the field of electrochemical technologies, and specifically relates to a polymer composite film, a composite current collector, a preparation method thereof, a positive electrode and an application thereof. The polymer composite film of this application includes a polymer base layer, and a first modification layer and a second modification layer respectively disposed on the opposite two surface of the polymer base layer; the material of the polymer base layer includes one or more of polyethylene terephthalate, poly(1,4-cyclohexanedimethylene terephthalate) and polyethylene terephthalate-1,4-cyclohexanedimethylene terephthalate; the components of the first modification layer and the second modification layer each independently include: a functionalized polymer material; the functionalized polymer material includes one or more of polyethylene naphthalate, poly(m-phenylene adipamide), liquid crystal polymer, polyformaldehyde, polyphenylene sulfide and polyphenylene ether. The polymer composite film of this application can be effectively disconnected when being damaged by strong external force, and thus can effectively prevent the occurrence of battery thermal runaway.

The application discloses a method for preparing adiponitrile by catalytic dehydration of adipamide. The method comprises the following steps: adding adipamide, a solvent and a catalyst into a reactor, and reacting at normal pressure and at 30-80 DEG C for 0.5-8 hours to obtain product adiponitrile. The catalyst is a supported palladium-based catalyst, and the loading amount is 0.1wt%-5wt%. The method is simple in operation, mild in reaction condition, and can reach 100% of raw material conversion rate and 99.2% of adiponitrile yield; the reaction byproduct is only water, and the atomic utilization rate is high; the catalyst is simple in preparation and easy to recycle, and is green and safe.

This invention discloses a high-barrier biaxially oriented co-extruded film and its preparation method, belonging to the field of membrane material processing technology. It addresses the technical problem that the mechanical strength and barrier properties of existing co-extruded films need further improvement. The invention comprises the following components by weight: 60-70 parts polyethylene terephthalate, 30-40 parts poly(m-phenylene adipamide), 25-35 parts composite polyester, 17-23 parts composite polyolefin, and 12-15 parts modified montmorillonite. This invention uses polyethylene terephthalate and poly(m-phenylene adipamide) as base materials to prepare a composite polyester containing rigid polyester segments, a composite polyolefin with good flexibility, and modified montmorillonite with good reactivity to reinforce the base material. This not only effectively improves the oxygen and water vapor barrier properties of the co-extruded film but also enhances its mechanical properties.

The invention discloses a glass fiber reinforced weather-resistant composite material and a preparation method thereof, and belongs to the technical field of high polymer materials. The composite material is composed of 30%-60% of bio-based nylon 56, 10%-30% of polyadipyl m-xylylenediamine, 25%-35% of glass fibers, 1%-2% of a weather-resistant agent, 0.2%-1% of an antioxidant, 0.2%-1% of a compatilizer, 0.1%-0.5% of a heat stabilizer, 1%-3% of a lubricant and 1%-2% of black masterbatch. The composite material disclosed by the invention belongs to a low-carbon environment-friendly material, has good impact strength and weather resistance, and can be used for preparing a car roof trunk; according to the invention, the bio-based nylon 56, the polyadipyl m-xylylenediamine and the glass fibers are blended, so that the mechanical properties of the material are powerfully enhanced.

The present invention relates to a process for treating a polymeric material (PM) comprising a polyamide 66 (PA66) based polymer and at least one filler (F1), the process comprising providing a polymeric material (PM) comprising a polyamide (PA66) based polymer and at least one filler (F1) and a solvent composition (SC) comprising water; preparing a mixture (M-0) from the polymeric material (PM) and the solvent composition (SC); subjecting mixture (M-0) to conditions for depolymerizing the polyamide 66 based polymer (D1) comprising a depolymerization temperature T(D1) in the range of from 150 to 300°C, in particular in the range of from 150 to 250°C, and a depolymerization time t(D1) of at least 0.25 hours, preferably in the range of from 0.25 to 8 hours, in particular in the range of from 0.5 to 8 hours, wherein the factor F(D1)=T(D1) x t(D1) is in the range of from 200 to 10000 K*h, preferably from 260 to 3700 K*h obtaining a mixture (M-1) comprising the solvent composition (SC), soluble oligomers and optionally monomers of the polyamide 66 based polymer, filler (F1), and insoluble residues; and separating the filler (F1) and insoluble residues from mixture (M-1) obtaining mixture (M-2) comprising the filler (F1) and insoluble residues, and mixture (M-3) comprising the solvent composition (SC) and soluble oligomers and optionally monomers of the polyamide 66 based polymer.

The invention discloses a wear-resistant and high-strength polyamide material. The wear-resistant and high-strength polyamide material is prepared from the following raw materials in parts by mass: 60 to 70 parts of polyhexamethylene adipamide, 45 to 48 parts of polyamide 6, 12 to 15 parts of polylaurolactam, 0.3 to 0.42 part of phenyl sodium hypophosphite and 2 to 3.2 parts of organosilane modified montmorillonite. And 4.2-5.6 parts by mass of carbon nanotubes, so that the polyamide disclosed by the invention has high wear resistance and high strength performance.

The invention belongs to the technical field of lithium ion battery solid electrolyte, and discloses an oxide / gel composite solid electrolyte and a preparation method and application thereof, the electrolyte is prepared by adding a transition metal compound and an amide cross-linking agent into a basic electrolyte to obtain a precursor solution, then adding an initiator, and carrying out in-situ polymerization at 45-70 DEG C, the amide cross-linking agent is one or more of N, N '-methylene bisacrylamide, polyacrylamide, poly (2-acrylamide-2-methyl-1-propanesulfonic acid), polymethacrylamide, polyethylene glycol diacrylamide, polyether amide or adipamide. The oxide gel electrolyte is formed through in-situ thermal polymerization, high safety of the lithium ion battery is achieved, the first coulombic efficiency of the LCOLi battery reaches 94.43%, the capacity retention rate reaches 92.77% after 200 cycles under the voltage of 3-4.6 V, and the electrolyte can be applied to the field of the lithium ion battery.

The present invention belongs to the technical field of green chemistry, and particularly relates to a method for modifying nitrile hydratase to regulate the regioselectivity of nitrile compounds and its application. The construction method is to perform site-directed mutagenesis on the key amino acids located in the substrate channel and binding pocket of nitrile hydratase to construct a pure enzyme of nitrile hydratase mutant. The newly constructed pure enzyme of nitrile hydratase mutant can be applied to regulate the regioselectivity of the catalytic reaction of nitrile compounds. Compared with before the modification, the regioselectivity of the enzyme-catalyzed reaction is biased towards the intermediate 5-cyanovaleramide, significantly inhibiting the formation of the by-product adipamide, achieving the enrichment of 5-cyanovaleramide, and having important reference significance for the regulation of the regioselectivity of the catalytic reaction and the synthesis research of the intermediate, which is beneficial to enhancing the industrial application value of nitrile hydratase.

A breathable synthetic roofing underlayment having a hydrophobic nonwoven layer on top to deflect water, a liquid water-resistant and vapour-permeable membrane layer in the middle, and a bottom nonwoven layer which is hydrophilic and has rapid and high liquid water absorbency. This accelerates the movement of liquid water from a roofing deck into the nonwoven bottom layer and increases the rate of transfer of water through the underlayment. The bottom layer comprises a carrier resin and a hydrophilic agent, which may be a polyamide such as polycaprolactam (Nylon 6) or poly(hexamethylene adipamide), a polysorbate or other composition. The underlayment is especially useful for application to wet roofing decks.

The present application relates to the field of vehicles, and particularly discloses a fuel valve (1) for a fuel tank, which fuel valve (1) comprises a tube body (11) comprising a fuel barrier structure formed of polyhexamethylene adipamide adapted to radially block the outward penetration of fuel, and an annular flange (12) protruding radially outward from the outer periphery of the tube body (11), the annular flange (12) having a flange body (121) and a welding structure (122) adapted to be welded to the shell (101) of the fuel tank (10), wherein the welding structure (122) is connected with the flange body (121) by being embedded in or coated on the flange body (121). The present application also discloses a corresponding manufacturing method. According to certain exemplary embodiments of the present application, the fuel valve (1) is simpler in structure, easier to manufacture, and can significantly reduce the cost, and even the performance is improved.

An aqueous binder solution for nonwoven mats such as insulation comprises a polycarboxylate polymer and a beta-hydroxyalkylamide hardener, such as N, N, N', N'-tetrakis-(beta-hydroxyethyl)adipamide, in an acidic solution. The polycarboxylate polymer is made using a phosphorus-containing accelerator. The solution has a pH below 3.

The present invention belongs to the technical fields of organic synthesis and analytical chemistry, and particularly relates to a fluorescent probe for detecting Pd<supgt;2+< / supgt>, a preparation method thereof and an application. The chemical name of the fluorescent probe is: cyclo-(1R,2R)-1,2-cyclohexanediamide ethoxy-4-phenyl-(2-cyano)-vinyl-4-phenylmethylimino-phenyl-4-acetylcyclohexanediamine; the fluorescent probe uses cyanostilbene as a chromophore and has two (1R,2R)-1,2-cyclohexanediamine and Schiff base structures. The fluorescent probe can have a strong supramolecular interaction with Pd<supgt;2+< / supgt>, resulting in significant quenching of the fluorescence of the compound SDC. This characteristic can be used for the sensitive detection of Pd<supgt;2+< / supgt> in an aqueous environment, with little interference from other ions, and it is an ideal rapid and sensitive sensor for Pd<supgt;2+< / supgt>.