84 results about "Polymer bonding" patented technology

The invention discloses a preparation method of a high-precision small gear assembly, which comprises the following steps: S1, selecting metal powder, mixing the metal powder with a high-molecular binder in proportion, mixing and uniformly preparing a granulation feed, and finally performing quality inspection on the feed to ensure that the feed is suitable for a subsequent forming process; s2, after the granulation feed is added into an injection molding machine, temperature and pressure parameters are adjusted, it is ensured that the material uniformly flows into a mold, the high-precision mold is used, the dimensional tolerance is controlled within + / -3 micrometers, the material fluidity needs to be kept in the injection process to prevent defects, the mold is cooled after injection is completed, and the material is obtained; the gear manufacturing precision can be improved, the surface smoothness is improved, flaws are reduced, it is guaranteed that the product dimensional tolerance meets the national standard grade requirement, meanwhile, the defects and deformation of a finished product are reduced through strict process control, it is guaranteed that a gear assembly has the longer service life and the higher performance stability, and the gear assembly is suitable for batch high-precision manufacturing.

The invention provides a polymer bonding microsphere, a bonding microsphere dispersion liquid and a preparation method and application thereof. The D50 particle size of the polymer bonding microspheres is 1-10 microns, the P value is less than or equal to 0.3, the glass transition temperature is 30-90 DEG C, the electrolyte swelling ratio is less than or equal to 150%, and the P value is equal to (sigma / d) 2 / [1 + (sigma / d) 2]; sigma is the standard deviation of the diameter of the polymer bonded microspheres, and d is the average diameter of the polymer bonded microspheres. The polymer bonding microspheres provided by the invention are good in particle size uniformity, the lithium battery diaphragm containing the polymer bonding microspheres is relatively high in bonding force with a positive plate and a negative plate, and a lithium battery containing the lithium battery diaphragm is low in internal resistance, good in cycling stability and good in bonding effect with the positive plate and the negative plate; the bonding microsphere dispersion liquid containing the polymer bonding microsphere has good stability.

The disclosure is related to removing a temporary polymer bonding layer from a dielectric or hybrid bonding surface of a process wafer including a plurality of dies which are to be bonded to other dies or to a substrate by hybrid bonding or direct dielectric-to-dielectric bonding. Producing an auxiliary layer precedes the production of the polymer bonding layer on the die side of the wafer, e.g. on the bonding surfaces of the dies. According to the disclosure, the auxiliary layer is formed of a nitride or a carbide of a transition metal, for example titanium nitride or tungsten carbide. These materials enable removing the auxiliary layer including any polymer residue, without negatively affecting the dielectric or hybrid dielectric and / or metal bonding surfaces of the dies.

Provided is a weak anchoring liquid crystal alignment agent which is used for forming a liquid crystal alignment film of a liquid crystal cell that has liquid crystals and the liquid crystal alignment film, and which comprises: at least one polymer (A) that is selected from the group consisting of polyamic acids, polyamic acid esters, polyimides, polyamides, and polyuria; and a polymer (B) that is compatible with the liquid crystals and that exhibits weak anchoring properties, said weak anchoring liquid crystal alignment agent containing a graft copolymer in which the polymer (A) and the polymer (B) are bonded.

The invention relates to the technical field of solid propellants, and particularly discloses a neutral polymer bonding agent, a preparation method of the neutral polymer bonding agent and application of the neutral polymer bonding agent in the solid propellants. The neutral polymer bonding agent can realize controllable molecular weight and controllable proportion of functional groups in the polymer, and the active group-CN steric hindrance in the neutral polymer bonding agent is small, so that the neutral polymer bonding agent is more easily adsorbed on the surfaces of ammonium nitrate particles, thereby improving the bonding effect.

A thermoplastic modacrylic resin suitable for producing modacrylic fibers having excellent melt spinning stability is provided. The thermoplastic modacrylic resin includes a copolymer. The copolymer includes a polymer (A) that includes a modacrylic resin including a constituent unit 1 derived from an acrylonitrile (a1) and a constituent unit 2 derived from an ethylenically unsaturated monomer (a2) other than the acrylonitrile (a1), and a polymer (B) that contains a constituent unit 3 derived from an acrylonitrile (b1). The polymer (B) has first and second terminals and is bonded to the polymer (A) at the second terminal. The polymer (B) includes 70 mol % or more of all the constituent units 3 in a base end region including the second terminal and having one half of all the constituent units in the polymer (B). The constituent unit 3 content is 3-30 mol % with respect to all the constituent units in the polymer (B).

This invention relates to the field of solid propellant technology, specifically disclosing a neutral polymer bonding agent, its preparation method, and its application in solid propellants. The neutral polymer bonding agent is prepared by polymerization of poly(hydroxyalkyl polyacrylate) and cyanoacetic acid as raw materials. It can achieve controllable molecular weight and controllable proportion of functional groups in the polymer. Moreover, the active group -CN in the neutral polymer bonding agent has low steric hindrance and is more easily adsorbed on the surface of ammonium nitrate particles, thereby improving the bonding effect.

The present invention proposes a polyurethane preparation method and a polyurethane-based toughened bonded explosive preparation method, which belongs to the technical field of polyurethane materials. The supramolecular polyurethane-based polymer bonded explosive prepared by the preparation method of the present invention has more advantages in strength and toughness, and significantly improves the mechanical properties of the bonded explosive. The high-density hydrogen bonds in its supramolecular polyurethane network interact to form physical crosslinking points, enhance the intermolecular force to improve the strength, and the dynamic fracture and reconstruction process of the hydrogen bonds can fully dissipate energy, giving high stretchability and toughness. The supramolecular polyurethane material has both high strength and high toughness. The Brazilian tensile test shows that the bonded explosive has great advantages in the field of polymers used for bonded explosives. The present invention provides a new way to improve the performance of bonded explosives, has good application prospects, and provides a new technical approach and solution for the development of the field of energetic materials.

The present invention discloses a neutral polymer bonding agent and a method for preparing the same. The bonding agent has a structure as shown in Formula I or Formula II. Furthermore, when the neutral polymer bonding agent has a structure as shown in Formula I, the resulting solid propellant exhibits significantly improved elongation at break. The neutral polymer bonding agent provided herein can be used in an ATPET-GAP curing system, significantly improving the mechanical properties of the solid propellant. #imgabs0#

The invention discloses a high-toughness cement-polymer composite material and a preparation method thereof, and belongs to the technical field of cement materials. The high-toughness cement-polymer composite material comprises a plurality of stacked cement sheets, the cement sheets are bonded and connected through a polymer, each cement sheet comprises a plurality of cement sub-sheets, and the included angle between the cement sub-sheets of the adjacent cement sheets is 10-90 degrees. The upper surfaces of the cement sheets are coated with polymers, the cement sheets on the upper layer are assembled on the cement sheets, the cement sheets are sequentially and repeatedly assembled till the set number of layers is reached, and a composite material blank is obtained. By adopting the high-toughness cement-polymer composite material and the preparation method thereof, the problem of poor toughness of an existing cement-based material can be solved.

The invention provides a polymer bonded fiber, a preparation method and application. The polymer adhesive fiber is prepared from the following raw materials in parts by mass: 35 to 75 parts of a monomer A, 10 to 20 parts of a monomer B, 10 to 40 parts of a monomer C, 0.2 to 0.5 part of an initiator and 0.1 to 0.5 part of a molecular weight regulator, polymer bonding fibers are prepared through a free radical solution polymerization reaction, then the bonding fibers with high tensile strength and high porosity are obtained through a solvent exchange precipitation process, the bonding fibers can be subjected to composite molding with inorganic particles, the adsorption and locking effects between the inorganic particles and a fiber substrate are enhanced, and the bonding fibers are not prone to falling off; the novel non-woven fabric composite material which is firm in bonding, intact in pore channel and excellent in mechanical property is obtained, and can be used for developing light and breathable functional textiles, drug-loaded medical dressings and flexible conductive substrate materials.

The present invention relates to the technical field of building waterproof materials, and provides a composite waterproof coiled material and its production process. The composite waterproof coiled material sequentially includes an upper carcass reinforcement layer, a main structure layer, and a lower carcass reinforcement layer from top to bottom. The main structure layer sequentially includes an asphalt-based self-adhesive layer, a polymer bonding layer, and a polymer self-adhesive layer from top to bottom. The widths of the upper carcass reinforcement layer and the lower carcass reinforcement layer are independently 25% to 50% of the width of the main structure layer. The parts on the left and right sides of the upper and lower surfaces of the main structure layer that are not covered by the upper carcass reinforcement layer and the lower carcass reinforcement layer adopt a corrugated structure. Through the above technical solution, the problems of poor tensile performance and poor aging resistance of waterproof coiled materials in the related art are solved.

This disclosure relates to a process for the synthesis of a compound of formula (I): (I) wherein w, x, y, and z are as defined in the description. The process includes the reaction of a compound of formula (II): (II) with carbonyldiimidazole, and the reaction of the resulting compound with propargylamine.

A bonded assembly includes a first package structure including first metallic bump structures and a first polymer bonding layer laterally surrounding the first metallic bump structures; a second package structure including second metallic bump structures and a second polymer bonding layer laterally surrounding the second metallic bump structures; and solder material portions located between the first metallic bump structures and the second metallic bump structures. Each of the solder material portions is bonded to a respective one of the first metallic bump structures and a respective one of the second metallic bump structures, and the second polymer bonding layer is bonded to the first polymer bonding layer through polymer-to-polymer bonding.

A composite material comprising an adhesive film comprising a polar polymer bonding layer of ethylene methyl acrylate and ketene vinyl acrylate, and a bonding resin of polyethylene, polypropylene, ethyl vinyl acetate, acrylate, or combinations thereof; a metal substrate adhered to the bonding resin; and a polymer layer adhered to the polar polymer bonding layer, the polymer layer comprising polyvinyl chloride.

The present invention provides a mixed bonding agent of a fluorine-containing polymer and an amino-containing polymer and a preparation method thereof. The present invention synthesizes a fluorine-containing polymer and an amino-containing polymer separately, and obtains the mixed bonding agent by mixing the two polymers in different ratios. This novel polymer mixed bonding agent is suitable for a solid propellant system composed of RDX as an oxidant and fluoropolymer F2313 as a binder. The mixed bonding agent contains both fluorine-based groups and amino groups. The fluorine-based groups increase the number of fluorine-containing segments in the binder F2313 that migrate to and accumulate on the surface, making the fluorine-containing polymer bonding agent and the binder F2313 more easily bonded. The amino groups form intermolecular hydrogen bonds with the oxidant RDX, thereby improving the adhesion work with the oxidant RDX. The mixed bonding agent can improve the "dewetting" phenomenon at the F2313 / RDX solid propellant interface, thereby improving the mechanical properties of the F2313 / RDX solid propellant.

The invention discloses an anti-falling building external wall thermal insulation composite material and a preparation method thereof, and belongs to the technical field of building materials. According to the invention, the ordinary Portland cement is used as a main cementing material, and is matched with the redispersible latex powder and the acrylate emulsion to form a rigid-flexible dual polymer bonding system, and the system not only significantly improves the bonding force between the composite material and a base wall, but also can buffer the internal stress generated by temperature change or structural deformation, so that the thermal insulation performance of the composite material is improved. Therefore, long-term stable adhesion of the insulating layer is ensured; by adding the glass beads, the overall density and the heat conductivity coefficient of the external wall thermal insulation material can be reduced, the load of a building external wall is effectively reduced, and meanwhile, a good thermal insulation effect is provided.

Provided is foley catheter and a composition for producing a foley catheter which is inserted in vivo and a method for producing the same, which the composition consists of the materials which carbon nanotube polymer (CNT Polymer) bonded a carbon nanotube and zinc oxide (ZnO) is combined with a silicon, wherein from 1.0 to 2.2 parts by weight of the said carbon nanotube polymer are combined with 100 parts by weight of silicon.

Provided is a stationary phase for chromatography, the stationary phase being made of inorganic carrier particles to which is bonded a polymer having a hydrophilic group on repeating units of a main chain thereof, and being produced by a particular production method.

The invention provides a thin building floor sound insulation system and a construction method, and belongs to the technical field of light sound insulation building materials. The system sequentially comprises a base layer processing layer, an elastic cushion layer, a composite damping prefabricated plate layer, a polymer bonding layer, a light leveling layer and a facing layer from bottom to top. Wherein the composite damping prefabricated plate layer is provided with an internal material gradient structure, and the composite damping prefabricated plate layer is in continuous transition from a high-damping mixture area to a scattering enhanced mixture area from bottom to top; the polymer bonding layer is formed by flexible polymer modified cement mortar, and interlayer chemical bridging and mechanical occlusion are achieved in cooperation with self-activation treatment on the surface of the plate. Damping dissipation and sound wave scattering are synergistically achieved through the gradient structure, interlayer stress is buffered through the flexible bonding layer, efficient attenuation of wide-frequency-band impact sound is achieved under the conditions of extremely small thickness and low load, and the contradiction between space limitation and high sound insulation requirements in existing residence transformation is effectively solved.

The invention discloses a magnetic material and preparation thereof, a rotor and a thermal management system, at least part of the surface of the magnetic material is coated with a composite coating layer, the composite coating layer comprises a first coating layer containing a-P (O)-structural fragment and a second coating layer containing a # imgabs0 # structural fragment, and the magnetic material is powdery; the magnetic material can be processed into a granular magnetic composite material, and comprises a magnetic material, a resin polymer bonding layer and a high-molecular elastomer, and the high-molecular elastomer is positioned among particles of the powdery magnetic material and is jointly dispersed in the resin polymer layer together with the particles of the powdery magnetic material. The magnetic material disclosed by the invention can be applied to a rotor and a thermal management system. The problem of performance degradation of related magnetic materials in the processing and using process is effectively solved, meanwhile, the processability, the magnetic performance, the mechanical performance and the environmental stability of the magnetic materials are improved, and the using requirements of magnets related to a new energy automobile heat management system can be met.

The invention discloses a method for preparing a hydrophilic lubricating anticoagulant coating and a product. The method comprises: providing a substrate material of the article, a step of bonding a hydrophilic polymer, comprising contacting the amino-functionalized target surface with a first organic solution comprising a hydrophilic polymer and a first organic base catalyst, the amino-functionalized target surface is subjected to a reaction with a part of ester groups in the hydrophilic polymer under the catalysis of a first organic base catalyst to generate covalent bonds, the weight-average molecular weight of the hydrophilic polymer is 1000-250000, and the weight-average molecular weight of the hydrophilic polymer is 1000-250000. The hydrophilic polymer comprises a polymer formed by a first monomer as shown in a formula (1-a) or formed by the first monomer as shown in the formula (1-a) and a second monomer as shown in a formula (1-b); a step of bonding polyethyleneimine; and a heparin bonding step.

The invention discloses a glass surface treatment method capable of resisting high-temperature and high-pressure injection molding shear force, and relates to the technical field of glass surface treatment. Aiming at the problems of interface layering, cracking, falling and sealing failure of a glass product in a high-temperature and high-pressure injection molding coating process, a glass substrate is sequentially subjected to decontamination cleaning, double-phase activation, coating and film forming, directional leveling, pre-curing and injection molding coating treatment; and forming a three-belt type self-locking polymer bonding layer with the thickness of 8-18 microns on the surface of the glass. The three-belt type self-locking macromolecule bonding layer is composed of a glass anchoring layer, a shearing buffering layer and a plastic affinity layer, the glass anchoring layer and the surface of glass form strong interface anchoring, the shearing buffering layer is used for absorbing injection molding shearing stress, and the plastic affinity layer and injection molding plastic form a high-compatibility interface.

The present disclosure relates to a method of manufacturing a polymeric laminate composition suitable for a photovoltaic element comprising, said polymeric laminate composition comprises off-stoichiometry thiol-ene polymer (OSTE) and luminescent nanoparticles, wherein the method comprises performing a surface modification of provided luminescent nanoparticles resulting in the introduction of photopolymerizable functional groups on said provided luminescent nanoparticles, wherein the luminescent nanoparticles in the polymeric laminate composition having a surface coverage of photopolymerizable functional groups bonded to thiol-ene polymer of 20-50%.

Provided is frequency-selective insulating glass for buildings. The insulating glass comprises: a first glass layer; a first insulating metal thin film layer disposed above the first glass layer; a polymer bonding layer disposed above the first insulating metal thin film layer; a second insulating metal thin film layer disposed above the polymer bonding layer; and a second glass layer disposed above the second insulating metal thin film layer. Here, each of the insulating metal thin film layers comprises a plurality of first unit cells and second unit cells. Here, at least a part of the first unit cells comprises: a first pattern of a reference scale; and a first pattern of a first reduced scale, which is disposed in at least one blank area provided in the first pattern of the reference scale.

An adhesive system includes a tape and a solid activator composition. The tape comprises a curable adhesive film, the curable adhesive film comprising: a film of a polymer; an unsaturated free radical polymerizable group, the unsaturated free radical polymerizable group being capable of bonding to the polymer, or in a substance different from the polymer; and a transition metal cation. The solid activator composition comprises an oxidizing agent and is not a self-supporting membrane. Also described is a kit comprising a tape and a solid activator composition in the form of a crayon or paste. A method of bonding a first substrate includes rubbing a solid activator composition on the first substrate or spreading the solid activator composition onto the first substrate, and then applying a tape. Also described is a crayon comprising an oxidizing agent and an acrylic polymer comprising crystalline monomer units having from 16 to 50 carbon atoms and at least one other monomer unit.

The invention discloses a composite diaphragm and a secondary battery comprising the composite diaphragm. The composite diaphragm comprises a diaphragm base membrane and an ion fast-pass composite thin layer arranged on one side of the diaphragm base membrane, wherein the ion fast-pass composite thin layer comprises the following raw materials: a lithium ion conducting material, a thermal diffusion filler, a conductive agent, inorganic functional particles and a polymer binding phase. According to the composite diaphragm provided by the invention, the ion fast-pass composite thin layer is constructed on the single surface of the diaphragm base membrane, interface polarization is reduced and hot spots are dispersed through cooperation of the lithium ion conducting material and the thermal diffusion filler, and the 5C capacity retention ratio is improved and the acupuncture peak current and the highest temperature rise are reduced under the condition that the energy density is not obviously sacrificed; and the trace inorganic functional particles inhibit interface side reaction caused by acidic by-products, slow down impedance drift and gas production, improve safety consistency, and have detectable element characteristic signals.

Frequency-selective building insulating glass is provided. The insulating glass comprises: a first glass layer; a first insulating metal thin film layer disposed on the first glass layer; a polymer bonding layer disposed on the first insulating metal thin film layer; a second insulating metal thin film layer disposed on the polymer bonding layer; and a second glass layer disposed on the second insulating metal thin film layer. Here, each of the first insulating metal thin film layer and the second insulating metal thin film layer includes a plurality of first unit cells and second unit cells. At least some of the first unit cells include a grid pattern and at least some of the second unit cells include a square slit.

The invention is related to removing a temporary polymer bonding layer (16) from a dielectric or hybrid bonding surface of a process wafer (1) comprising a plurality of dies (3) which are to be bonded to other dies or to a substrate by hybrid bonding or direct dielectric-to-dielectric bonding. Producing an auxiliary layer (15) precedes the production of the polymer bonding layer (16) on the die side of the wafer, i.e. on the bonding surfaces of the dies (3). According to the invention, the auxiliary layer (15) is formed of a nitride or a carbide of a transition metal, for example titanium nitride or tungsten carbide. These materials enable removing the auxiliary layer (15) including any polymer residue, without negatively affecting the dielectric or hybrid dielectric / metal bonding surfaces (8) of the dies (3).