12results about How to "High peel strength between layers" patented technology

This invention relates to the field of heat insulation sheet technology and discloses a flame-retardant aerogel heat insulation sheet, comprising a heat insulation sheet body. The heat insulation sheet body has, from the outside to the inside along its thickness direction, a surface protective layer, a flame-retardant functional layer, an interface reinforcement layer, a core composite layer, and a bottom protective layer. Each layer is formed into an integrated structure through a gradient composite process. The core composite layer is made of aerogel powder and glass fiber composite. This flame-retardant aerogel heat insulation sheet, through the synergistic design of multiple physical layers, achieves deep composite of aerogel powder and glass fiber. Combined with a functional interface layer, a flame-retardant layer, and an installation adapter structure, it achieves comprehensive performance of "high heat insulation, strong flame retardancy, shatter resistance, and easy assembly," adapting to the heat insulation protection and insertion installation requirements of new energy lithium battery modules, effectively preventing the spread of thermal runaway and improving the safety of lithium battery use.

The utility model relates to filter membrane preparation equipment technical field, concretely to a kind of multilayer nanofiber filter membrane superposition assembly device, through the cooperative mechanism of layered precision membrane feeding, whole course tension control, multi-section superposition press and low-temperature heating fusion, the automation, high-precision superposition of different function nanofiber membrane is realized, rack is fixed base, and layered rotating groove of front end U type bearing frame is used to load nanofiber membrane roll of different function, at least three groups layered conveying module are vertically arranged along rack height, ensure that multilayer film material is synchronously conveyed to downstream. Guiding roller and lower roller of tension unit form tension adjusting structure, maintain film material tension stable, avoid tearing or wrinkle, first group of superposition platform preliminary press and eliminate interlayer gap, middle heating box provides low-temperature heating to promote interlayer nanofiber physical fusion, second group of superposition platform carries out secondary press, and strengthens interlayer bonding strength.

The utility model discloses a high-strength glass fiber pipe with a paint-free and highlight surface, which is characterized in that the pipe wall of the glass fiber pipe comprises an inner PET (polyethylene terephthalate) cloth layer, a middle structure layer and an outer PET cloth layer from inside to outside, the middle structure layer comprises a resin layer formed through a compression molding process and glass fiber filaments distributed in the resin layer or a plurality of glass fiber rods penetrating through the resin layer and extending in the axial direction, and pores of the outer PET cloth layer are filled with resin permeating outwards in the compression molding process; pores of the inner PET cloth layer are filled with resin which permeates inwards in the mold pressing process. During forming, part of resin of the resin layer penetrates through and fills pores of the outer PET cloth layer and the inner PET cloth layer, so that the surface smoothness is improved; by means of the colors of the outer PET cloth layer and the inner PET cloth layer, surface processing is not needed, the bottom exposure phenomenon is avoided, the production steps are simplified, the production efficiency is improved, and the production cost is reduced; and the resin penetrates through the outer PET cloth layer and the inner PET cloth layer to form an interlocking structure, so that the interlayer peeling strength is improved, and layering is prevented.

The application discloses a paper-based high-barrier material with a water-based PHA coating and a PHA extrusion layer, and a preparation method and application thereof, and belongs to the technical field of biodegradable polymer materials and environment-friendly packaging. The scheme innovatively introduces a two-component system with a specific melting point difference to construct a water-based pre-coating layer, and utilizes a double mechanism of "micro-leveling + interface thermal fusion" to realize efficient closing and strong anchoring of a rough base material at a very low coating amount. Compared with a traditional thick-layer shower film process, the material realizes more excellent barrier integrity and oil resistance and moisture resistance performance with a thinner extrusion surface layer, significantly improves moisture resistance and oxygen resistance performance, and simultaneously solves the requirement of puncture resistance of dry and hard food packaging materials through a unique stress balance design of the double-layer system. The material does not contain fluorine-based additives, is completely biodegradable, and meets the high-standard requirement of food safety compliance.

The present invention relates to the technical field of photovoltaic front panels, and discloses a composite photovoltaic front panel and a preparation method and application thereof. The composite photovoltaic front panel includes a transparent substrate (transparent polyester film material), a resin bonding material layer and a reinforced resin material layer coated with glass fiber cloth; the resin bonding material includes a polyhydroxy polyester resin, a curing agent, an ultraviolet absorber, an antioxidant, a leveling agent and other additives; the molar ratio of the hydroxyl group of the polyester resin to the isocyanate group of its curing agent is 1:1-1.2; the reinforced resin material includes an epoxy resin, a curing agent, an ultraviolet absorber, an antioxidant and other additives; the molar ratio of the epoxy group of the epoxy resin to the acid anhydride of the curing agent is 1:0.80-0.9. The composite photovoltaic front panel has excellent light transmittance, mechanical strength and bending strength, and can also prevent the interlayer delamination phenomenon of the initial and long-term aging. The light transmittance and interlayer peeling strength after PCT48h aging are good, and it is suitable for application in flexible photovoltaic modules.

The invention discloses an adhesive composition for a photovoltaic backboard and a preparation method of the adhesive composition, and belongs to the technical field of adhesives. The adhesive composition for the solar photovoltaic backboard comprises the following components in parts by weight: 100 parts of a polyester resin solution, 5-20 parts of a modified urea-formaldehyde resin solution, 3-5 parts of a curing agent, 0.5-3 parts of a plasticizer, 0.1-1 part of a cross-linking agent, 0.5-3 parts of a heat stabilizer, 0.2-2 parts of a light stabilizer, 0.05-1 part of an antioxidant and 1-3 parts of an anti-hydrolysis agent. Through blending of the polyester resin solution and the modified urea-formaldehyde resin solution, the crosslinking density is improved, the prepared backboard has excellent hydrolysis resistance and high interlayer peeling strength, hydrolysis between membrane structures is effectively prevented, the use performance of the backboard glue is effectively enhanced, and the service life of the solar photovoltaic module backboard is prolonged.

The invention discloses a PCB browning treatment liquid and a preparation method thereof, and relates to the technical field of circuit board treatment agents. The browning treatment liquid is prepared from the following components: 80-120 g / L of concentrated sulfuric acid, 10-20 g / L of hydrogen peroxide, 8-16 g / L of corrosion inhibitor, 20-50 mg / L of halogen ions, 10-20 g / L of anhydrous ethanol, and the balance is deionized water. The prepared browning treatment liquid has high copper loading and good thermal stability, and can play a role in efficient corrosion inhibition and protection for copper surfaces. The solution after browning treatment is clear and has no precipitation, thereby reducing the problem of PCB short circuit. After the treatment liquid is browned, the interlayer peeling strength of a multilayer board formed after lamination is effectively improved.

The application discloses a kind of composite fabric with double-sided hetero-functional and preparation method thereof, adopt the three-layer composite structure of first functional layer, intermediate layer, second functional layer from inside to outside in turn, interlayer is connected by adhesive, through the synergistic effect of double-charge surface and adhesive of intermediate layer, interlayer bonding is reinforced by electrostatic attraction direction, simultaneously charge repulsion effect blocks anion hydrophobic agent and cationic hydrophilic agent molecule mutual penetration, avoid function mutual interference;When the deformation of concave quadrilateral negative poisson's ratio structure, intermediate layer flexible base cooperates controllable gap deformation to absorb stress, prevent interlayer peeling or functional layer wrinkle, charge layer also keeps stable distribution due to electrostatic constraint;Finally realize the synergistic effect that structure stiffness is uniform under dynamic deformation, interlayer peeling strength is significantly improved, and the dual needs of structure stability and function reliability in dynamic scene such as intelligent wearing are considered.

The present invention belongs to the technical field of polymer composite materials, and specifically relates to an antibacterial composite aluminum foil material and a preparation method thereof. The composite aluminum foil material comprises a substrate layer, an aluminum foil layer, and a protective layer arranged in sequence from bottom to top, and an adhesive layer is arranged between the substrate layer and the aluminum foil layer, and between the aluminum foil layer and the protective layer. The adhesive layer adopts a modified adhesive, and the modified adhesive has excellent antibacterial properties, flame retardant properties, and bonding properties, and has good dispersibility and compatibility in organic polymer systems. The composite aluminum foil material prepared by the present invention has excellent antibacterial properties, mechanical properties, flame retardant properties, and waterproof properties by adjusting the raw material ratio and controlling the process conditions.

The utility model discloses an environmental protection type underwater sound absorption rubber board, including surface function protective layer, high frequency scattering sound absorption layer, dynamic resonance sound absorption layer, low frequency absorption buffer layer and base support layer. Dynamic resonance sound absorption layer is equipped with matrix type helmholtz resonance cavity array, and resonance cavity is connected through intercommunication hole channel, and high frequency scattering sound absorption layer and dynamic resonance sound absorption layer are interlocked through dovetail groove. Surface function protective layer outer surface is equipped with boss array and chitosan microcapsule of load quaternary ammonium salt antibacterial agent, and high frequency scattering sound absorption layer contains regenerated nitrile rubber and needle-like through -hole, and low frequency absorption buffer layer is compounded by open -cell polyurethane sponge and gradient density rubber layer, and base support layer contains regenerated rubber layer and glass fiber cloth. The utility model discloses through the layered cooperation design, realizes the efficient absorption of high, medium, low frequency sound wave underwater, and has the characteristics of antibacterial antifouling, structural stability and environmental protection, and is suitable for the underwater noise reduction scene such as ocean engineering.

The present invention belongs to the technical field of packaging materials, in particular to a high-strength easy-to-peel barrier cover film for large cups and its preparation process. The present invention includes an outer layer, a barrier layer and an extruded layer connected in sequence; the outer layer is made of BOPA material, the barrier layer includes a corona layer, an intermediate layer and an inner layer arranged in sequence, the corona layer is connected to the outer layer, and the inner layer is connected to the extruded layer; the corona layer is composed of 100 parts by mass of a first low-density polyethylene, the intermediate layer is composed of 80 parts by mass of a first low-density polyethylene and 20 parts by mass of ethylene-vinyl alcohol copolymer, and the inner layer is composed of 50 parts by mass of a second low-density polyethylene and 25 parts by mass of metallocene polyethylene; the extruded layer is made of ethylene-vinyl acetate copolymer. The present invention has high heat sealing strength and can resist the destructive force of the bulging package; it meets the easy-to-peel characteristics of the cover film, and the cover film can be opened smoothly when it is peeled off, and the cover film has certain barrier properties.

The invention discloses high-performance leather based on bio-based raw materials and a preparation method of the high-performance leather, and belongs to the technical field of leather. The leather is of a three-layer functional gradient structure and sequentially comprises the following components from bottom to top: a bottom layer which is formed by catalyzing and crosslinking a thermoplastic starch matrix, vegetable tannin and activated keratin through laccase; the middle foaming layer is formed by hot-pressing and foaming a thermoplastic starch matrix, sodium bicarbonate and citric acid; the surface layer is formed by catalytic crosslinking of a thermoplastic starch matrix, cane sugar and nano-crystalline cellulose through oxidase. The preparation method comprises the following steps: respectively preparing the bottom layer slurry, the middle layer slurry and the surface layer slurry, and carrying out semi-dry method compounding and integrated hot press molding. The raw materials are all renewable bio-based components, and the preparation process is green and environment-friendly; the prepared leather has high tensile strength, excellent wear resistance and water resistance, tight interlayer combination, good softness and buffering performance and excellent comprehensive performance, can be widely applied to the fields of shoe materials, bags and suitcases and the like, and has a good industrialization prospect.