60 results about "Interfacial adhesion" patented technology

This invention belongs to the field of flame retardant technology, specifically relating to a coated boron nitride and its preparation method and application, and a biodegradable flame-retardant composite material and its preparation method and application. This invention employs a multi-level structure regulation approach, utilizing silane coupling agents and chemical bonding for surface coating modification, effectively alleviating stress concentration. Furthermore, regular polyhedral flame-retardant units are constructed on the coated and modified two-dimensional boron nitride surface, building a three-dimensional flame-retardant network. Through phytic acid molecular bridging, an inorganic-organic interface transition layer is formed, significantly improving the interfacial adhesion strength between the functional phase and the matrix resin. This invention constructs a flame-retardant structural system based on molecular configuration optimization, optimizing the interfacial compatibility between the functional phase and the biodegradable matrix resin. It utilizes a bio-based phosphorus-nitrogen synergistic flame-retardant system combined with a two-dimensional boron nitride structure for composite design, constructing a flame-retardant network system with both high-efficiency flame-retardant properties and excellent performance.

This invention discloses a method for combining CNC high-precision high-temperature resistant insulating substrate engraving with tin-copper alloy printed circuit 3D printing, belonging to the field of high-power circuit carrier manufacturing technology. The invention uses 99.7% alumina ceramic or silicon nitride ceramic as the insulating substrate, achieving high-precision structural forming of ±0.005-0.025mm through CNC layer engraving. Sandblasting, roughening, sensitization, activation, and pre-plating surface modification enhance interfacial adhesion. CuSn10 tin bronze is used as the printing material, and the circuit is formed by SLM or FDM 3D printing at a sintering temperature of 850-900℃, achieving a forming density ≥98.71%. Through stepped heating sintering and high-temperature resistant inorganic adhesive curing, the ceramic substrate and tin-copper alloy circuit are integrated. The circuit carrier obtained by this invention has a long-term temperature resistance of ≥1600℃, a volume resistivity of ≥10¹⁴Ω·cm, a current carrying capacity of 15.6A for 3mm lines, and an adhesion strength retention rate of ≥95% after 1000 thermal cycles. The temperature rise is 15~20℃ lower than that of traditional PCBs. It is suitable for high-load, high-current scenarios such as industrial power supplies and new energy power control. It is compatible with processes and has complete industrial support, and has significant technical and economic feasibility.

The invention relates to an LSPC foamed sheet and a preparation method thereof, and belongs to the technical field of foamed materials. In order to solve the problems that an existing foamed stone-plastic plate is uneven in foam hole, insufficient in strength and prone to local collapse, a novel foam regulator is introduced into a PVC-based foaming system. According to the regulator, through hydrosilylation, ring opening and silane coupling reaction, a polysiloxane-alkyl ester functional structure is grafted on the surface of nano silicon dioxide, bubbles are induced to be uniformly nucleated by utilizing low surface tension of the functional structure, and bubbles are inhibited to be aggregated through an interface adhesion energy barrier, so that a uniform and fine closed-pore structure is formed. The density of the obtained LSPC board is reduced, and the LSPC board has excellent mechanical strength and high-temperature collapse resistance and is suitable for bearing, floor heating and other scenes.

This invention relates to the field of porous carbon materials technology, and discloses a method for preparing phenolic resin-based porous carbon based on the synergistic activation of water vapor and carbon dioxide. The focus of this invention is on constructing a "ZIF-8@Ni-MOF derived bifunctional material with pore formation – nitrogen / nickel co-doping + dynamic pressure – dual-gas synergistic etching + Ti3C2T" process. x The "MXene gradient modification" multi-dimensional process utilizes MOF-derived materials to provide well-defined initial pores and active sites. Combined with complementary dual-gas properties and dynamic pressure control, precise customization of pore sizes from 0.7 to 50 nm is achieved. MXene modification simultaneously enhances conductivity and interfacial adhesion. The resulting material exhibits superior performance, with a microporosity ≥88% and a specific surface area ≥2200 m². 2 / g, total pore volume ≥1.3cm³ 3 / g, the process produces no chemical waste pollution. When applied to silicon-carbon anodes in lithium batteries, it maintains a capacity retention rate of ≥85% after 500 cycles, demonstrating high industrialization value.

This invention provides a highly adhesive, wide-temperature-range aqueous hydrogel electrolyte for zinc-ion batteries, its preparation method, and its applications. The method includes the following steps: dissolving sodium alginate in 2-morpholine ethanesulfonic acid buffer solution, adding EDC and NHS, and activating; then adding dopamine hydrochloride, undergoing an amidation reaction, dialysis purification, and freeze-drying to obtain SA-DA powder; adding gelatin and SA-DA powder to deionized water, stirring and mixing evenly, and allowing to stand; then immersing in the electrolyte and undergoing soaking treatment to obtain the final product. The electrolyte of this invention exhibits excellent interfacial adhesion and flexible mechanical properties, significantly improved electrochemical stability and cycle life, excellent wide-temperature-range adaptability and anti-drying ability, outstanding safety and biocompatibility, and a simple and highly controllable process, providing key technical support for the development of high-performance, high-safety flexible aqueous zinc-ion batteries.

This invention relates to the field of photovoltaic encapsulant film technology, and discloses a thermally conductive and insulating photovoltaic encapsulant film, its preparation method, and its application. The film is an integrated structure formed by double-layer co-extrusion, comprising upper and lower functional layers (each including 100 parts of matrix resin, 5-25 parts of BN@SiO2 core-shell composite filler, and 1.5-8 parts of functional microcapsules); the BN@SiO2 core-shell composite filler includes a BN@SiO2 core-shell structure with h-BN as the core and amorphous SiO2 as the shell, and a gradient interface layer grafted onto its outer surface (which, from the inside out, includes an anchoring layer covalently bonded to the SiO2 shell, a flexible stress-buffering crosslinking layer, and a hydrophobic outer layer); the fillers in the upper and lower functional layers have different orientations. The thermal conductivity of this film exceeds 1.0 W / (m·K), reducing the operating temperature of photovoltaic modules by nearly 20°C, and the volume resistivity after deflection exceeds 10¹. 5 It has a strength of Ω·cm and also possesses excellent resistance to PID, high-voltage insulation, and interfacial adhesion.

The present application relates to the technical field of wet shotcrete, and discloses a construction method for enhancing the adhesion of wet shotcrete and a tunnel rock wall interface, comprising the following steps: step one, construction preparation; step two, vibration impurity removal and dust absorption; step three, high-pressure air gun cleaning and dust removal; step four, high-pressure water flushing and rough surface formation; step five, wet shotcrete layer-by-layer spraying; and step six, curing. The present application completely removes impurities in the rock wall surface and gaps through integrated pretreatment of vibration impurity removal, hierarchical cleaning and concentrated water beam roughening, forms a uniform rough interface, significantly improves the interface adhesion of wet shotcrete and the rock wall, solves the problems of easy hollowing and peeling in the prior art, and guarantees the safety and durability of initial tunnel support.

This invention discloses a self-crosslinking oil-resistant fluorosilicone gel, its preparation method, and its applications, belonging to the field of special polymer materials technology. The preparation method of the gel includes: ring-opening copolymerization of trifluoropropylmethylcyclotrisiloxane and octylmethylcyclotetrasiloxane under alkaline catalysis to obtain a prepolymer; then reacting it with 3-(methacryloyloxy)propyltrimethoxysilane to introduce self-crosslinking groups, followed by post-treatment to obtain a self-crosslinkable prepolymer; finally, adding an organotin catalyst allows for rapid curing at room temperature to form a three-dimensional network structure. This invention imparts extremely low oil swelling rate to the material by introducing fluorinated segments, while achieving rapid self-crosslinking curing under mild conditions through molecular design. The resulting material possesses excellent oil resistance, ease of application, and good interfacial adhesion, making it suitable for sealing and plugging in harsh oil environments in aerospace, petrochemical, and other fields.

This utility model relates to the technical field of adhesion testing devices, specifically a device for measuring the adhesion of polyurethane grouting materials. It includes: a bottom sample stage, a universal testing machine body, and a programmable computer. The bottom sample stage is mounted on the base of the universal testing machine body, and a clamping assembly is mounted on the displacement beam. The device fixes the substrate to be tested in the center of the bottom sample stage, applies polyurethane grouting material to the center of the substrate surface, and places a pre-made Marshall cylindrical mixture specimen on top to allow the grouting material to cure naturally. Four adjusting rods are manually tightened to clamp the Marshall specimen, and the displacement beam is controlled to move upwards at a uniform speed. This device can efficiently and stably test the interfacial adhesion performance between polyurethane grouting materials and different road substrates under controlled temperature and humidity conditions, improving the engineering guidance value and application extrapolation of the experimental results. Furthermore, worn clamping plates can be easily removed and replaced.

This invention proposes a polyimide slurry, a method for preparing a polyimide film, and a method for improving the interlayer adhesion between the polyimide film and inorganic layers. The slurry includes two aromatic polyamic acid slurries, A and B, an organic solvent, and a coupling agent. Polyamic acid A is the main component of the slurry, while polyamic acid B is used as an additive. This invention uses a specific polyamic acid component as an interface modifier. During the subsequent baking process, the structural characteristics of the additive polyamic acid B cause it to tend to aggregate at the material interface. The polyimide corresponding to polyamic acid B exhibits excellent interlayer adhesion with inorganic interfaces such as glass. This results in a polyimide film with high adhesion to inorganic layers such as SiNx or SiOx. Furthermore, compared to general small-molecule additives, the aromatic polyimide after baking with polyamic acid B exhibits extremely high thermal stability, improving the interlayer adhesion without compromising the thermal stability of the substrate polyimide film.

This invention discloses a high-performance, yellowing-resistant TPU interlayer for laminated glass and its preparation method, belonging to the field of adhesives and polymer materials technology. This invention achieves permanent covalent anchoring with the glass substrate through silane chemical grafting, reversibly controls the interface molding quality through dynamic borate ester bonds, and achieves bulk free radical capture and antioxidant effects through the "inorganic-organic" synergistic effect of CeO2@GA. These methods synergistically solve the core problems of interfacial adhesion failure and bulk aging yellowing of TPU interlayers under humid and hot environments. The resulting TPU interlayer has a tensile strength of up to 24.1 MPa, an elongation at break of 480-550%, a phenolic yellowing resistance rating of 4.5-5.0, and a yellowing resistance Δb ≤ 0.45, exhibiting excellent comprehensive performance and broad application prospects in the field of laminated glass.

This invention discloses a compound modified masterbatch for improving the heat-sealing strength of PLA tea bags and its preparation method, belonging to the field of polymer materials technology. By weight, it comprises the following components: 35-50 parts polylactic acid carrier; 18-28 parts toughening agent; 3-8 parts composite nucleating agent; 1-4 parts crystallization promoter; 2-5 parts interface compatibilizer; and 0.5-2 parts antioxidant. The toughening agent is a blend of polybutylene adipate-terephthalate and polybutylene succinate in a mass ratio of (1.5-2.5):1. The composite nucleating agent is composed of an organophosphate nucleating agent and an acylhydrazine compound in a mass ratio of 1:(0.8-1.5). This invention systematically improves the heat-sealing strength of PLA tea bags from three dimensions—toughening, nucleation, and promotion—from the perspectives of interfacial adhesion, crystal structure, and molecular motion, overcoming the limitations of single modification methods.

The present application relates to a kind of binder for lithium ion battery negative electrode and its preparation method and application.The binder includes polyacrylamide as rigid component and aqueous polyurethane as flexible component, the polyacrylamide is combined with the aqueous polyurethane by intermolecular interaction and forms three-dimensional network structure.Compared with prior art, the binder obtained by the present application can effectively inhibit the volume expansion of silicon-based negative electrode while having excellent interfacial adhesion and electrochemical stability.

This invention discloses a differentiated curing process and equipment for synchronous roll forming of AB-component silicone OCA using dual release films. The curing equipment includes a frame, a feeding assembly, a composite roller assembly, a differentiated temperature control module, and a winding mechanism. The feeding assembly, composite roller assembly, differentiated temperature control module, and winding mechanism are sequentially arranged and installed on the frame. The differentiated temperature control module includes a cooling air device located on the upper side of the material channel and an infrared preheating device located on the lower side of the material channel. This invention is fully compatible with AB-component silicone OCA, with a curing temperature close to the conventional process of around 120℃. The synchronous roll forming of dual release films covers a full thickness of 50-1200μm. The upper cooling and lower preheating design allows the upper film side adhesive layer to quickly set, reducing the interfacial adhesion to 3-5gf / in. After preheating, the lower film side adhesive layer's adhesion to the film increases to 8-14gf / in, a gradient of 5-9gf / in. This results in an upper film that is easy to peel off without adhesive residue, and even thick adhesive layers do not adhere.

Disclosed herein are a piezoelectric device using a stretchable piezoelectric composite and a method for manufacturing the same. The piezoelectric device using the stretchable piezoelectric composite includes a piezoelectric film printed using the stretchable piezoelectric composite, and a substrate for fixing the piezoelectric film. The stretchable piezoelectric composite is produced by performing a sieving process of aligning piezoelectric nanoparticles, a functionalization process of improving interfacial adhesion by adding a functionalization agent to the aligned piezoelectric nanoparticles, and a mixing process in which the functionalized piezoelectric nanoparticles are mixed with a flexible and stretchable matrix.

The invention belongs to the technical field of reinforced and toughened polycarbonate materials, and relates to a reinforced and toughened polycarbonate material and a preparation method thereof. The reinforced and toughened polycarbonate material is prepared from the following components in parts by mass: 60-80 parts of polycarbonate; 5-20 parts of wood flour / polyglycerol / nano-copper composite particles; 5 to 15 parts of glass fiber; 1-3 parts of a toughening agent; and 0.5-2 parts of a compatilizer. According to the PC reinforcing and toughening product, melt blending is carried out through a twin-screw extruder, polycarbonate, glass fibers and other components can be fully mixed under the twin-screw extrusion condition, the dispersity of a blend is improved, and the PC reinforcing and toughening product has the advantages that by improving the compatibility of the polycarbonate and various raw materials, the toughness of the product is improved, and the toughness of the product is improved. Therefore, the interface bonding force between the materials is greatly improved, the normal-temperature impact toughness and the low-temperature impact toughness of the product are improved, and the product has better surface appearance.

This invention relates to the field of circuit board technology, specifically to a process for preparing an aluminum foil-based copper-clad laminate for printed circuit boards. The process involves immersing copper foil in a sulfuric acid solution to form activated copper foil, preparing a co-deposition solution, placing the activated copper foil in the co-deposition solution to obtain a composite-plated copper foil, and grafting the composite-plated copper foil to obtain a reinforced copper foil. In this invention, the aluminum substrate is laser-clad to introduce boron nitride and nanodiamonds, improving its hardness and thermal conductivity. The copper foil undergoes co-deposition of a nanodiamond gradient layer and silane grafting to enhance the coating adhesion and surface activity. Vacuum pressurization and annealing processes reduce interfacial porosity and residual stress, increasing the density of the composite copper plate. The active paste promotes chemical bonding between the aluminum substrate and the copper foil. Laser scanning achieves precise and efficient local connections, avoiding thermal damage. The final product possesses high thermal conductivity, high insulation, high thermal stability, and strong interfacial adhesion.

This invention belongs to the field of building materials and discloses an ultra-high performance concrete floor deck material and its preparation method. By weight, the raw materials include: 700-750 parts cement, 90-100 parts mineral powder, 10-40 parts silica fume, 28-32 parts modified nano-magnesium oxide, 1-5 parts water-reducing agent, 1-3 parts defoamer, 1000-1100 parts quartz sand, 100-200 parts modified epoxy resin, 150-250 parts curing agent, 200-300 parts water, and 40-100 parts fiber. The modified nano-magnesium oxide enhances interfacial adhesion through its bridging effect. Modification improves the dispersibility of ordinary nano-magnesium oxide, allowing it to be uniformly dispersed throughout the concrete to fill the voids within the cement paste. The slow hydration reaction compensates for concrete shrinkage, reducing the risk of cracking. The modified epoxy resin provides a high-functionality three-dimensional cross-linked network, further improving the overall strength, toughness, and thermal stability.

This invention relates to the field of adhesive tape technology and discloses a photocurable electro-electro-activated easy-peel tape and its preparation method. The photocurable electro-electro-activated easy-peel tape of this invention is composed of a photocurable electro-electro-activated easy-peel adhesive layer, a metallized PET layer, a pressure-sensitive adhesive layer, etc.; the adhesive includes 100 parts by weight of vinyl monomer, 3-20 parts by weight of polyester-based ionic liquid, 10-40 parts by weight of modified polyether polyol conductive agent, etc. When a low voltage is applied, under the drive of the electric field, the anions and cations of the ionic liquid move directionally along the direction of the electric field in the ion pathway formed by the modified polyether polyol conductive agent, forming an interfacial electrochemical reaction, which weakens the interaction force between the adhesive molecular chains and the substrate, breaks the physical and chemical adhesion between the adhesive and the substrate, reduces the interfacial adhesion strength, and achieves a greatly reduced peel strength under ultra-low voltage, with no adhesive residue during peeling, achieving a controllable and damage-free tape peeling effect.

An electrical interconnect structure and its formation method, as well as a panel-level packaging structure, are disclosed. The electrical interconnect structure includes: several conductive structures, the surfaces of which have been roughened to form micro-pit structures; and a molding compound layer covering the sidewalls of the conductive structures. The roughened sidewalls of the conductive structures form micro-pit morphologies. This three-dimensional porous structure significantly increases the actual contact area between the conductive structures and the molding compound layer, enabling a tight mechanical bond at the interface of the two dissimilar materials. After the molding compound layer completely covers the roughened sidewalls of the conductive structures, the molding compound material is embedded within the micro-pit structures, generating a significant anchoring effect and effectively suppressing interface delamination. When the packaging structure experiences temperature changes or is subjected to external mechanical loads, the increased interfacial adhesion can uniformly disperse stress, preventing excessive stress concentration at the interface between the conductive structures and the molding compound layer, thereby preventing the generation and propagation of cracks and significantly improving the long-term reliability and failure resistance of the packaging structure.

This invention discloses a biodegradable PBAT coating resin, its preparation method, and its applications, belonging to the field of polymer material modification technology. The specific preparation method involves: PBAT-M copolymers are prepared by polycondensation of terephthalic acid, adipic acid, 1,4-butanediol, and 2-methyl-1,3-propanediol under a catalyst; the PBAT-M copolymer, initiator, and maleic anhydride are mixed and melt-extruded to obtain maleic anhydride-grafted modified PBAT-M copolymers; silica nanoparticles are dispersed in an acetic acid solution of chitosan to obtain chitosan surface-functionalized silica nanoparticles; the maleic anhydride-grafted modified PBAT-M copolymer, chitosan surface-functionalized silica nanoparticles, flow modifier, and PBAT are mixed and melt-extruded to obtain a biodegradable PBAT coating resin. This invention improves melt flowability by introducing a side-methyl-containing comonomer, enhances interfacial adhesion to paper substrates through maleic anhydride grafting, and imparts antibacterial and reinforcing properties to the material through chitosan surface-functionalized nanoparticles.

The application discloses a low-modulus high-elasticity epoxy resin, a preparation method and application thereof, and belongs to the technical field of flexible electronic packaging materials. Through molecular structure design, long-chain flexible polyether chain segments are introduced into a rigid aromatic epoxy skeleton containing a fluorene group through chemical bonding of a urethane bond, an interpenetrating crosslinking network of soft and hard segments is constructed, a flexible long chain is formed into a continuous and penetrating flexible phase in a curing system, the obtained epoxy resin curing product has a Young's modulus of less than 50 MPa and an elongation at break of more than 60%, has low curing shrinkage, excellent interfacial adhesion and water and oxygen blocking properties, and can be widely applied to the high-reliability packaging of flexible display screens, wearable medical devices and other flexible electronic devices as packaging glue.

The application provides biodegradable bone glue and a preparation method and use thereof, and belongs to the technical field of biological medicine. The bone glue is prepared from raw materials in a mass ratio of europium-doped polyphosphoric calcium: phosphorylated amino acid: polyacrylic acid: polyether glycol: metal-carboxyl-containing aromatic compound coordination complex=(1-3):(1-3):(2-5):(2-4):(0.1-0.3). The bone glue has significantly improved adhesion in a humid biological environment, and has excellent injectability, adhesion and low interfacial adhesion, and also has excellent biocompatibility, antibacterial and anti-inflammatory activity and osteogenesis promoting activity, effectively improves inflammation and oxidative stress problems in the bone healing process, and provides a more efficient and reliable repair material for clinical bone repair.

This invention discloses an injectable conductive adhesive hydrogel, its preparation method, and its applications. The hydrogel uses bacterial cellulose, sulfonated chitosan, and acrylamide as its main components. Phytic acid and zwitterionic covalent framework material ZCOF are introduced into the aqueous system, and in-situ polymerization is carried out under the initiation of ammonium persulfate to construct a multi-layered cross-linked network structure. Polyacrylamide forms a continuous chemical covalent network as the main framework, bacterial cellulose and polysaccharide segments form a supporting and entangled structure, phytic acid participates in network construction through multi-point hydrogen bonding and electrostatic interactions, and the covalent organic framework material is embedded in the system to form an ordered porous interface-reinforced structure. The resulting hydrogel possesses excellent flexibility, mechanical stability, electrical conductivity, and interfacial adhesion properties, making it suitable for applications such as flexible sensors, wearable electronic devices, and bio-interface adhesive materials.

This invention discloses a hydrophobic nano-silica modified basalt fiber and its preparation method. The method includes using basalt fiber as a matrix, introducing silicon-oxygen bonds through hydrolysis and condensation with a silane coupling agent, and then constructing a "micro-nano dual structure" through chemical bonding and physical adsorption of hydrophobic nano-SiO2. The hydrophobic nano-SiO2 is trimethylchlorosilane-modified gas-phase SiO2. The preparation process includes three steps: fiber pretreatment, silanization treatment, and nano-SiO2 grafting. By optimizing parameters such as ultrasonic power, reaction temperature, and dispersion concentration, the surface roughness of the modified basalt fiber is improved, enhancing the interfacial adhesion between the basalt fiber and the asphalt matrix. The method is simple and controllable, suitable for asphalt pavement engineering, and improves its durability.

The invention belongs to the technical field of functional adhesives, and relates to a preparation method and application of an ultra-long room-temperature phosphorescent formaldehyde-free adhesive. The method comprises the following steps: by taking lignin as a basic component, sequentially reacting with epichlorohydrin and an amination reagent under an alkaline condition to obtain ammoniated modified lignin; meanwhile, dispersing a natural polyhydroxy polymer in water, performing light oxidation treatment, and embedding a phosphorescent light-emitting unit through a covalent bond to obtain a functional cross-linking agent; and finally, uniformly mixing the two products at room temperature to prepare the ultra-long room-temperature phosphorescent formaldehyde-free adhesive. According to the method, biomass molecules are taken as a main body of raw materials, the process conditions are mild, and the obtained adhesive forms a covalent bond and hydrogen bond dual rigid network after being heated and fully cured, so that the adhesive can reflect the ultra-long room-temperature phosphorescence characteristic under the excitation of ultraviolet light, has the functions of interface bonding and optical recognition, and can be applied to the field of light emitting devices. The method can be applied to anti-counterfeiting and tracing of wood composite materials and related interface systems.

The present application relates to the technical field of textile materials, and discloses a moisture-absorbing, antibacterial and anti-mite multifunctional composite fabric, which comprises a flexible base material layer composed of antibacterial flax, modal and chitin fibers; the surface of the flexible base material layer is provided with an interfacial adhesion layer containing a silane coupling agent and nano-silicon dioxide / zinc oxide / silver fillers; and the outermost layer is a polymer film functional layer containing functional materials same as or synergistic with the fillers of the interfacial adhesion layer; the three layers are synergized through cross-linking to realize moisture absorption, antibiosis, anti-mite and multiple expansion functions. The fabric of the present application has multiple functions such as antibiosis, anti-mite, moisture absorption, air permeability, electrical conductivity and ultraviolet resistance through scientific fiber matching and nano-filler synergism, and the antibacterial rate is still over 90% after 50 times of washing. The fabric is produced by using conventional equipment and a wet-wet synchronous curing process, the interlayer adhesion is firm, the grammage is flexible and adjustable, and the mass production cost is low. The fabric has soft hand feeling, and the functions can be further expanded through post-finishing, and is suitable for multiple fields such as medical treatment, outdoor activities and intelligent wearing, and has strong competitiveness.

The application discloses a kind of mussel biomimetic enhanced nanocellulose composite antifouling coating and preparation method thereof, belong to marine antifouling material technical field.Preparation method includes: S1, preparation of zwitterionic cellulose nanofiber;S2, preparation of silanization modified polydopamine loaded nanosilver;S3, preparation of composite coating precursor solution;S4, coating and gradient solidification.The coating is zwitterionic cellulose nanofiber as matrix, compound hydroxyl-terminated polydimethylsiloxane and silanization modified polydopamine loaded nanosilver, through mussel biomimetic adhesion strengthens interfacial adhesion, relies on hydrophobic-hydrophilic interpenetrating network to improve anti-swelling performance, integrates hydration layer physical barrier, low surface energy fouling detachment and nanosilver broad-spectrum bactericidal function, realize synergistic efficient antifouling.The coating of the application has strong adhesion, excellent anti-swelling, durable and green antifouling effect, and can be widely applied to antifouling treatment of ships, offshore platforms, fishing nets and the like, and has important application value and market prospect.

The present application relates to a kind of anti-cracking fatigue-resistant low-temperature elastic good air spring composite rubber material, by weight parts, including the following components: natural rubber (NR): 70-85 parts;Butadiene rubber (BR): 15-30 parts;Maleic anhydride grafting ethylene-propylene-diene rubber (EPDM-g-MAH): 10-15 parts;Brominated butyl rubber (BIIR): 3-8 parts, preferably 5 parts;Epoxy carbon nanotube: 5-10 parts;Reinforcing filler: 40-60 parts;Peroxide vulcanizing agent: 1.0-2.5 parts;Sulfur: 0.3-0.8 parts;Co-vulcanizing agent and active agent: 2-5 parts;Anti-aging system: 3-6 parts;Processing aid: 1-3 parts;Tackifying resin: 2-5 parts.The scheme strengthens the compatibility and interfacial adhesion between EPDM phase and NR / BR matrix.This makes EPDM phase long-term, stable ozone-resistant nature, from the root to eliminate the generation of surface cracking.

This application discloses an isocyanate silane containing an active group at the α-position, its preparation method, and its applications, belonging to the field of organosilicon functional materials technology. The general structural formula of this silane is OCN–(CH). n -CH(R)–Si(OR¹)3, with the introduction of active groups such as ester, hydroxyl, and amino groups at the α-position, enhances reactivity and interfacial adhesion. The preparation employs a two-step method: α-halomethylsilane reacts with a protected amino compound containing a nucleophilic substituent via nucleophilic substitution to generate a protected aminomethylsilane intermediate, which is then thermally decomposed and rearranged at 180–260 °C and 10–50 mbar under reduced pressure to obtain the target product. This application utilizes readily available raw materials and a stable process, which can be carried out with or without solvents. The product yield is 82%–94%, with a purity ≥94%, effectively improving material flexibility and compatibility, reducing catalyst usage, and is suitable for tin-free / low-tin environmentally friendly systems. The product can be used as a coupling agent or end-capping agent, widely applied in moisture-curing adhesives, sealants, and modified polymers, demonstrating promising industrialization prospects.