2855 results about "Adhesive cement" patented technology

The invention belongs to the technical field of road construction, and particularly relates to a copper-doped tailing pavement base material as well as a proportion confirmation method and application thereof. The preparation method comprises the following steps: S1, preparing raw materials; s2, a compaction test method is adopted, and the void ratio of the compacted aggregate wrapped with the cement mortar is calculated; s3, according to the volume filling principle, the gravels form a basic framework, the void ratio of the gravels in the compaction state is measured, cement adhesive cement adheres to aggregate, the aggregate is filled in gaps of the framework formed by the gravels, and finally the blending proportion of the copper tailings, the gravels and the aggregate is determined by combining the composition mechanism and volume parameters of the mixture; and S4, calculating the using amount of the steel slag composite cementing material mucilage according to the thickness of the steel slag composite cementing material mucilage wrapping film and the specific surface area of the copper tailings. A skeleton filling theoretical method is adopted, the shrinkage effect of the filler in the skeleton is controlled, the cracking risk is reduced, and meanwhile the high strength is achieved.

The invention relates to a mildew-proof silicone sealant with high curing rate and high adhesive strength, and belongs to the technical field of adhesives. The anti-mildew coating is prepared from alpha, omega-dihydroxy polydimethylsiloxane, dimethyl silicone oil, fumed silica, phenoxy resin coated nano calcium carbonate, a modified hydroxypropyl-gamma-cyclodextrin loaded mildew preventive, dibutyltin dilaurate, methyltrimethoxysilane and a curing accelerator. According to the mildew-proof silicone sealant with the high curing rate and the high adhesive strength, the surface drying time is 9-13 minutes, the 24-hour curing depth is 6.3-7.2 mm, the adhesive strength is 3.0-3.6 MPa, the tensile strength is 5.8-6.4 MPa, the shear strength is 3.0-3.9 MPa, the elongation at break is 410-457%, and the mildew-proof grade is 0 grade in 30 days, 60 days, 180 days and 360 days.

The invention relates to the field of adhesives, and particularly discloses an OCA optical adhesive for a folding screen and a preparation method of the OCA optical adhesive. The OCA optical adhesive for the folding screen is prepared from the following raw materials in parts by weight: 60 to 80 parts of urethane acrylate, 15 to 25 parts of organic silicon grafted glycidyl ether, 20 to 30 parts of a diluent, 5 to 10 parts of a photoinitiator and 1 to 2 parts of an antioxidant, the organic silicon grafted glycidyl ether is prepared by reacting vinyl siloxane, pentaerythritol triallyl ether, allyl glycidyl ether and a catalyst. The OCA optical cement for the folding screen prepared by the invention is applied to the folding screen, and can keep relatively good elasticity, bending resistance and bonding strength in the long-term repeated folding use process, and wrinkles and bubbles are not easy to appear.

The invention relates to a preparation method of a radiation refrigeration coating with super-hydrophobic performance. According to the method, hydrophobic modified nano-particles and nano-particles with high reflectivity and high emissivity are blended in an adhesive solution, an adhesive is separated out to form a micron-sized aggregate through a non-solvent induced phase separation technology, and meanwhile, various nano-particles are uniformly coated on the surface of the aggregate, so that a stable suspension system is prepared. The radiation refrigeration coating has excellent radiation refrigeration performance, excellent super-hydrophobicity and good durability, the preparation process is simple, the radiation refrigeration coating is suitable for large-scale industrial application of outdoor scenes such as building outer walls, and a new technical solution is provided for developing efficient and lasting radiation refrigeration materials.

The invention relates to the field of adhesives, in particular to a structural adhesive epoxy composition and a preparation method thereof. The structural adhesive epoxy composition is prepared from the following raw materials: epoxy resin, a toughening agent, a reinforcing agent, filler, a latent curing agent, a latent accelerant, a chemical foaming agent, a physical foaming agent and the like. Finally, the epoxy composition prepared by the invention can be used as a structural adhesive raw material, has ultrahigh expansion rate, low-temperature rapid curing capacity and structural adhesive property, and also has good mechanical properties and excellent comprehensive application effect, so that the complex requirements of the application field of the prior art on the structural adhesive raw material are met.

The invention relates to the technical field of new materials, and mainly relates to a double-component low-viscosity ultralow-temperature adhesive as well as a preparation method and a use method thereof. The double-component low-viscosity ultralow-temperature adhesive comprises a component A and a component B. The component A comprises the following components in percentage by mass: 20-40% of bisphenol A epoxy resin, 4-8% of aromatic epoxy resin, 6-10% of polyurethane modified epoxy resin, 1-2% of a rubber toughening agent, 5-20% of a diluent and the balance of an additive. And the component B comprises the following components in percentage by mass: 10-40% of a polyether amine curing agent, 10-40% of a fatty amine curing agent, 10-40% of an aromatic amine curing agent and 10-40% of a phenolic aldehyde amine curing agent. The adhesive provided by the invention has relatively strong compressive strength and excellent toughness, can keep good toughness in a low-temperature environment, is not easy to cause brittle rupture, can bear relatively large mechanical load, and is suitable for various industrial applications.

The utility model discloses a tensile shear and stripping test piece sample preparation tool, which belongs to the field of adhesive detection and comprises a bottom plate, a tensile shear sample preparation component and a stripping sample preparation component, and the tensile shear sample preparation component and the stripping sample preparation component are arranged on the bottom plate. The tensile shear sample preparation assembly comprises a first test piece groove and a second test piece groove which are formed in the bottom plate, and the first test piece groove and the second test piece groove are formed in the first direction; the stripping sample preparation assembly comprises two guide stand columns arranged on the bottom plate, a plurality of pressing blocks are arranged between the two guide stand columns in a sliding mode in the second direction, and test piece mounting grooves are formed in the pressing blocks in the third direction; the first test piece groove and the second test piece groove are located between the two guide stand columns, the pressing block is located above the second test piece groove, and the first direction, the second direction and the third direction are perpendicular to one another. The device can be used for simultaneously preparing a tensile shear test piece and a stripping test piece, and the adhesive layer thicknesses of different adhesives can meet the standard requirements by adjusting the pressure.

A solid waste-based reinforced ceramic tile adhesive and a preparation method therefor. The solid waste-based reinforced ceramic tile adhesive comprises 17-22% of polyacrylamide modified solid waste residue powder, 3-7% of cement, 7-12% of tailing micro powder, 55-65% of graded tailing sand and 8-13% of a tensile adhesive. By limiting the raw material components and content of the tensile adhesive, the tensile adhesive strength of the solid waste-based adhesive with different substrates and the construction performance thereof can be ensured; and the solid waste residue powder is modified by using a very small amount of low-molecular-weight polyacrylamide, such that the stability of the system can be significantly improved, and the comprehensive performance of the solid waste-based ceramic tile adhesive can be enhanced. The solid waste-based reinforced ceramic tile adhesive comprises 90 wt% or more of solid wastes. By limiting the components and contents of each raw material, all components can act synergistically, so that the solid waste-based reinforced ceramic tile adhesive can replace traditional cementing materials such as cement, which greatly reduces the cost, realizes the comprehensive utilization of industrial solid waste materials, and has significant advantages such as saving on energy, having environmental protection and being low carbon.

The invention discloses a high-refractive-index nano-composite optical adhesive and a preparation method thereof, and belongs to the technical field of optical transparent adhesives. The optical adhesive is prepared by taking a polyurethane acrylate oligomer with a specific structure as matrix resin, introducing surface-modified barium titanate and zirconium oxide core-shell nanoparticles as a functional filler, and matching with an active diluent, a photoinitiator and a silane coupling agent in a specific proportion. Through the design of the core-shell structure, the core problems that the high-refractive-index nanoparticles are easy to agglomerate in an organic resin matrix, the dispersion stability is poor and the bonding force with a matrix interface is weak are effectively solved. The prepared optical adhesive has a refractive index of more than 1.65, a light transmittance of more than 99% and a haze of less than 0.3% after being cured, has excellent bonding strength, weather resistance and long-term use stability, and is especially suitable for precise lamination of high-end display devices (such as OLEDs (Organic Light Emitting Diodes) and micro-lens arrays).

The purposes of the present invention is: to provide an adhesive composition which has excellent adhesive force and holding properties in addition to excellent low dielectric properties; to provide an adhesive tape which has an adhesive layer that contains the adhesive composition; to provide a resin molded body which is molded from a resin composition that comprises the adhesive composition; to provide a composite structure which comprises the adhesive tape; to provide an automobile member which comprises the resin molded body or the composite structure; and to provide a method for producing a resin molded body using the composite structure.　The present invention provides an adhesive composition which contains: an acrylic copolymer that has a constituent unit derived from a (meth)acrylic acid alkyl ester, a constituent unit derived from an olefin-based polymer that has a polymerizable unsaturated double bond at an end thereof, and a constituent unit derived from a polar functional group-containing monomer; and a styrene-based elastomer that contains at least one substance selected from the group consisting of a block copolymer which has a block derived from a styrene-based monomer and a block derived from a conjugated diene-based monomer, and a hydrogenated product of the block copolymer.

The invention relates to the technical field of polyurethane adhesives, in particular to an adhesive for tooling polished aluminum and a preparation method thereof. The adhesive comprises a component A and a component B, wherein the raw materials for preparing the component A comprise at least 25-40 parts of a polyol composition, 50-75 parts of a calcium filler, 0.1-0.3 parts of a dispersant, 0.1-0.3 parts of a catalyst, 1-4 parts of a molecular sieve, 0.01-0.2 parts of a defoamer and 0.1-0.5 parts of nano silicon dioxide, and the component B comprises at least isocyanate. By controlling the selection and coordination of the polyol, the dispersant and the catalyst in the system and the addition amount of each raw material, when the provided adhesive is used for bonding the polished aluminum (1-2 mm) to a honeycomb panel, the roller peel strength is ≥60 N*mm / mm, thereby meeting the actual external wall application requirements.

The invention discloses a power-on viscosity-reducing adhesive composition, a viscosity-reducing adhesive tape and a preparation method of the viscosity-reducing adhesive tape, and relates to the technical field of adhesive materials. The preparation method comprises the following steps: adding polyurethane acrylate and polybutylene adipate into a planetary stirring kettle, stirring, sequentially adding a PEDOT / PSS solution, a nano core-shell material, a dynamic cross-linking agent, hydrogenated rosin tackifying resin, TPU particles and butylated hydroxytoluene, stirring to obtain mixed glue, and carrying out vacuum defoaming to obtain the electrified viscosity-reducing glue composition. Coating a release film with the electrified viscosity-reducing adhesive composition, carrying out UV curing, and attaching the release film on the other side to obtain the electrified viscosity-reducing adhesive tape. The prepared electrified viscosity-reducing adhesive composition and viscosity-reducing adhesive tape have the advantages of being excellent in mechanical property, sensitive in response, remarkable in stripping force difference before and after electrification, stable at high temperature, stable in circulation, resistant to pollution and the like, nondestructive disassembly and reutilization of devices are achieved by regulating and controlling the adhesive force through an electric field, and the electrified viscosity-reducing adhesive composition and viscosity-reducing adhesive tape can be applied to an electric response assembly scene.

The invention discloses an electrolytic adhesive, an electrolytic cotton adhesive tape and a preparation method of the electrolytic adhesive. The electrolytic cotton adhesive tape comprises the following components in parts by weight: 5-10 parts of 1, 1 '-ferrocene diformyl chloride, 10-15 parts of acrylic acid beta-cyclodextrin ester, 3-8 parts of polyethylene glycol diglycidyl ether, 10-20 parts of ionic liquid, 1.5-3 parts of a cross-linking agent, 10-15 parts of tackifying resin and 0.5-1.5 parts of an initiator, and a polymer matrix comprises an acrylic acid-hydroxypropyl acrylate copolymer and acrylic acid-2-ethylhexyl ester. Comprising an adhesive layer and an adhesive tape base layer, the adhesive layer is prepared from the electrolytic adhesive, and the adhesive tape base layer is prepared from acrylic foam; the obtained electrolytic cotton adhesive tape has high initial adhesion and viscosity strength after power-on and power-off re-adhesion.

The invention relates to the technical field of polyurethane adhesives, and provides a heat-conducting polyurethane structural adhesive and a preparation and use method thereof.The heat-conducting polyurethane structural adhesive comprises a first component and a second component, and the first component comprises modified bio-based polyol, polythiol, heat-conducting filler, a first water removal agent, a thixotropic agent, a first catalyst and a second catalyst; the second component comprises epoxy resin, diisocyanate, polyisocyanate, a heat-conducting filler, a coupling agent, a second dewatering agent, a dispersing agent and a retarder; the modified bio-based polyol is selected from at least one of modified castor oil polyol, modified grease polyol and modified cashew nut shell oil polyol; the polythiol is selected from at least one of trimethylolpropane tri (3-mercaptopropionic acid ester), pentaerythritol tetra (3-mercaptopropionic acid ester), butanediol mercaptopropionic acid ester and polythiol. Through the arrangement, the heat-conducting polyurethane structural adhesive has relatively long openable time, and is rapidly cured at room temperature within a short time to generate relatively high initial curing strength.

The invention discloses a preparation method of a vehicle-mounted OCA optical adhesive, and belongs to the technical field of optical adhesive materials. The vehicle-mounted OCA optical adhesive comprises an optical light release film, an acrylic adhesive layer and an optical heavy release film which are sequentially arranged from top to bottom, the preparation method comprises the following steps: mixing and stirring an acrylic pressure-sensitive adhesive, 2-ethylhexyl acrylate, isobornyl acrylate, acryloylmorpholine, dodecyl ester, N-vinyl pyrrolidone, a bridging agent and a photoinitiator, filtering, and defoaming to obtain an acrylic adhesive; and coating a release film with the obtained acrylic adhesive, and irradiating the release film with a halogen lamp to obtain the vehicle-mounted OCA optical cement. The vehicle-mounted OCA optical adhesive prepared by the invention has better high-temperature-resistant and high-temperature-resistant and high-humidity-resistant effects, is simple in preparation process and is suitable for large-scale production.

The utility model belongs to the technical field of adhesive flowability detection, and particularly relates to an adhesive flowability detection device which comprises a workbench, a collection box fixedly mounted on the workbench, two fixed columns fixedly mounted on one side of the collection box on the workbench, and an inclined plate rotatably mounted between the two fixed columns, a plurality of transparent pipes are fixedly mounted at the top of the inclined plate; the rotating assembly is located on the workbench and used for driving the inclined plate to rotate; the transparent tube is fixedly installed on the workbench, the U-shaped plate is fixedly installed on the workbench, a plurality of raw material boxes are fixedly installed on the top of the U-shaped plate, a sliding groove is formed in the U-shaped plate, and discharging ports of the raw material boxes are communicated with the sliding groove. Therefore, the flowability conditions of the adhesive at different inclination angles can be recorded, and flowability tests can be simultaneously carried out on different types of adhesives without errors.

An adhesive for a tennis ball includes base rubber. The base rubber contains, as a main component thereof, liquid rubber having a number average molecular weight of not less than 10,000. The adhesive has a shear viscosity of not greater than 2,000 Pa·s. A tennis ball includes a hollow core made of a rubber material. The core includes two hemispherical half cores. The two half cores are adhered to each other by using the adhesive for a tennis ball.

The invention relates to the technical field of ceramic materials, in particular to a method for reducing the surface roughness of a silicon nitride instant-fired sheet, which comprises the following steps: S1, mixing alpha-silicon nitride, beta-silicon nitride, absolute ethyl alcohol and herring fish oil, grinding and dispersing to obtain basic mixed powder; s2, mixing, grinding and dispersing the filling mixed powder, absolute ethyl alcohol and herring fish oil, then carrying out filter pressing and drying, calcining and regrinding to obtain ground filling mixed powder; s3, mixing and ball-milling the basic mixed powder, the ground filling mixed powder, a solvent, an adhesive, a plasticizer and a dispersing agent to obtain slurry; s4, casting the slurry into a film; s5, attaching the thin film to the surface of the silicon nitride green body, and pressing the silicon nitride green body into a whole piece through an isostatic press to obtain a pressed green body; s6, a boron nitride isolation layer is printed on the surface of the pressed green body, and the green body with the isolation layer is obtained; and S7, stacking the green bodies with the isolating layers, and then carrying out adhesive removal and sintering reaction to obtain the silicon nitride ceramic chip.

The invention discloses a preparation method of a natural latex grafted lignin biological adhesive. The preparation method comprises the following steps: dissolving lignin in deionized water to prepare a 15wt% lignin solution; adding 1 part of 2wt% ammonium persulfate solution, heating to 60 + / -2 DEG C, and stirring at the speed of 300-330rpm for 45 minutes to obtain a lignin and ammonium persulfate mixed solution; adding 15 parts of the mixed solution into 100 parts of natural latex, heating to 60 + / -2 DEG C, stirring at the speed of 300-330rpm for 3 hours to promote graft polymerization reaction of the lignin and the natural latex, and cooling at room temperature to obtain the natural latex grafted lignin biological adhesive. According to the invention, natural latex and lignin are taken as main raw materials, harmful substances common in the traditional petroleum-based adhesive are not contained, and the adhesive is friendly to human body and environment, safe to use, simple and feasible in preparation process, wide in raw material source and easy for large-scale production, is suitable for multiple fields of wood processing, furniture manufacturing, textile printing and dyeing and the like, and has a wide market prospect.

The invention relates to a light / heat / magnetic detachable high-strength polyurethane adhesive as well as a preparation method and application thereof. The light / heat / magnetic detachable high-strength polyurethane adhesive comprises a polyurethane adhesive and a functional filler. According to the light / heat / magnetic detachable high-strength polyurethane adhesive prepared by the preparation method disclosed by the invention, the colloid is black, and the adhesive has excellent light absorption performance and can realize rapid separation of an adhesive interface under infrared irradiation through a heat effect; meanwhile, the ferroferric oxide can be vibrated and heated under the action of an external magnetic field due to the magnetic response characteristic of the ferroferric oxide, so that fracture and separation of the adhesive layer are promoted. By means of the technology, efficient and reversible disassembly of parts bonded through the hot melt adhesive is achieved, possibility is provided for recycling and reusing of bonding materials and devices, and the problem that traditional polyurethane hot melt adhesive cannot be recycled is solved.

The invention relates to the technical field of adhesives, in particular to a tensile test system for a structural adhesive, which is characterized in that a first sample group and a second sample group are prepared through a sample preparation unit; aiming at a plurality of sample subgroups in the sample group, standard tension test, dynamic tension test and cyclic tension test are respectively carried out through the standard test unit, the dynamic test unit and the cyclic test unit, and the data acquisition unit acquires test data in the tension test process in real time; in addition, the intelligent control unit controls the tension testing machine in the corresponding tension test through the standard tension increasing rate, the dynamic tension increasing rate and the circulating tension increasing rate; the intelligent control unit also controls the temperature of a test environment, and tension tests are carried out under different temperature conditions; the data analysis unit analyzes the tension test data to obtain a tension test result; the intelligent tension test system provided by the invention has high flexibility and adaptability, and can obtain a more accurate tension test result.

The invention discloses a two-component polyurethane pouring sealant as well as a preparation method and application thereof, and relates to the technical field of adhesives. The bi-component polyurethane pouring sealant comprises a component A and a component B, wherein the component A is prepared from 10 to 90 parts of acryloyloxy-terminated polyether polyol, 10 to 60 parts of polyester polyol, 10 to 20 parts of hydroxyl-terminated polybutadiene prepolymer and 1 to 2 parts of an initiator; and the component B comprises 30-70 parts of isocyanate and 5-20 parts of a catalyst. According to the technical scheme, the acrylic acid chain segment is added into the polyether polyol, so that the mechanical strength is favorably improved, and meanwhile, the light transmittance is also improved; by adding the polyolefin prepolymer, the air tightness is further enhanced, and meanwhile, the yellowing resistance is also improved. The bi-component polyurethane pouring sealant disclosed by the invention has good light transmission, high-temperature and high-humidity resistance, yellowing resistance and high-temperature and high-humidity resistance, and can be used for packaging MINI LED screens.

The invention discloses a UV curing adhesive for coating a low-refractive-index optical fiber and a processing method thereof, belongs to the technical field of adhesive preparation, and is used for solving the technical problem that the refractive index and the damp-heat resistance of the UV curing adhesive for coating the optical fiber in the prior art need to be further improved. The preparation method comprises the following steps: introducing a low-refractive-index hybrid siloxane prepolymer, a multi-component interface bonding prepolymer and a modified branched polyester prepolymer into a system together, and constructing a compact and uniform organic-inorganic three-dimensional network in a curing process by utilizing silica condensation, interface chemical bonding and a flexible chain segment cross-linking reaction, the low-refractive-index hybrid siloxane prepolymer endows a film layer with a stable refractive index, the multi-component interface bonding prepolymer enhances the binding force of a base material, the modified branched polyester prepolymer improves stress buffering and toughness, and the obtained cured film is low in refractive index, firm in interface bonding and small in mass change in a humid and hot environment and shows excellent optical stability and long-term reliability.

The invention relates to the technical field of automobile parts, in particular to an automobile rubber sealing part and a preparation method thereof. A metal framework base material is stamped in a numerical control mode, and a framework blank is obtained by controlling deviation through a positioning pin; after being slightly roughened, the blank is phosphatized, coated with a special rubber prime coat adhesive and subjected to infrared drying; weighing the raw materials according to the ratio, feeding into an internal mixer by stages, and mixing at controlled temperature and speed to obtain a rubber compound; feeding the mixed rubber into a double-roller open mill to press a continuous rubber sheet in a step-by-step distance-adjusting manner; performing hydraulic cutting by a special cutting die to obtain a slightly large formed rubber sheet; sticking the molded film to the framework into a mold with a positioning boss, exhausting, boosting and vulcanizing to obtain a semi-finished product; feeding the semi-finished product into a hot air oven and introducing nitrogen for secondary vulcanization; and carrying out laser thickness measurement and visual inspection, packaging qualified products in an anti-static manner, and sealing in a corrugated carton. The framework precision and the rubber bonding strength are improved, and degumming is avoided; stable rubber material performance and uniform rubber sheet thickness are guaranteed, and material shortage is reduced; vulcanization displacement and bubbles are prevented, rubber oxidation and aging are inhibited, and the durability and stability of the product are improved.

The utility model provides a fiber bragg grating vibration sensor for gas pipeline monitoring, which relates to the technical field of fiber bragg grating vibration sensors for gas pipeline monitoring, and comprises a pipeline body, a mounting structure is arranged on the pipeline body, and the mounting structure mainly comprises two first half rings, the two first semi-rings are both arranged on the pipeline body, second semi-rings are rotatably connected to the first semi-rings, connecting blocks are fixedly connected to the second semi-rings, connecting grooves are formed in the first semi-rings, the connecting grooves are matched with the connecting blocks in size, a rectangular plate is fixedly connected to the two first semi-rings together, and the rectangular plate is fixedly connected to the second semi-rings. According to the utility model, the problem that the installation complexity is increased due to the fact that the fiber grating vibration sensor is directly adhered to the surface of the gas pipeline by using an adhesive mostly at present and grease, dust or a coating on the surface of the pipeline can influence the adhesion effect of the adhesive, so that the pipeline needs to be cleaned before installation is solved.

The utility model discloses a high-temperature-resistant flash valve exhaust nozzle structure which comprises a pipe body and an energy reduction structure. The energy reduction structure comprises at least two stages of ceramic energy reduction units which are connected in series, and the ceramic energy reduction units are connected in the pipe body; the ceramic energy reduction unit comprises a first-stage energy reduction assembly and a second-stage energy reduction assembly; the first-stage energy reduction assembly comprises a first ceramic spray pipe and a first liner pipe; the first lining pipe sleeves the outer side of the first ceramic spray pipe; the first liner tube is arranged in the tube body; the second-stage energy reduction assembly comprises a second ceramic spray pipe and a second liner pipe; the second lining pipe sleeves the outer side of the second ceramic spray pipe; the second liner tube is arranged in the tube body; the end of the first ceramic spray pipe abuts against the end of the second ceramic spray pipe. And a medium flows out of the pipe body after sequentially passing through the first-stage energy reduction assembly and the second-stage energy reduction assembly from the inlet end of the pipe body. According to the multi-stage energy reduction device, the multi-stage energy reduction assemblies connected in series are adopted, medium pressure can be decomposed into stage-by-stage release, and therefore the fluid speed is effectively reduced, and dependence on a high-temperature adhesive is also avoided.

The invention relates to the technical field of adhesives, in particular to a bio-based adhesive and a preparation method thereof. The bio-based adhesive is prepared from the following raw material components: bio-based polyol, bio-based isocyanate and cyclohexane diisocyanate, a tin catalyst, a chain extender and an organic solvent are not contained; the invention also provides a preparation method of the bio-based adhesive, the bio-based adhesive prepared by the invention has good biodegradability, thermoplasticity and biocompatibility, can realize biodegradation under various environmental conditions, reduces pollution to the environment, and is more environment-friendly in treatment after being discarded compared with traditional petroleum-based polyurethane.

The invention discloses a battery adhesive testing method, system and equipment, and the method comprises the steps: constructing a multi-layer composite test sample containing a to-be-tested adhesive based on the structure position of the to-be-tested adhesive in a battery, and carrying out the tensile test and shear test of the multi-layer composite test sample, obtaining a tensile test force-displacement curve and a shear test force-displacement curve; obtaining a tensile property parameter of the adhesive to be tested according to the tensile test force-displacement curve, and obtaining a shear property parameter of the adhesive to be tested according to the shear test force-displacement curve; constructing a cohesive force model corresponding to the to-be-tested adhesive according to the tensile property parameters and the shear property parameters, and performing failure simulation on the to-be-tested adhesive according to the cohesive force model; the rigidity damage coefficient and the fracture energy of the to-be-tested adhesive are calculated according to the failure simulation, the failure test result of the to-be-tested adhesive is obtained according to the rigidity damage coefficient and the fracture energy, and the failure test accuracy is improved.

Disclosed are a two-component low-density PU structural adhesive, a preparation method therefor and an application thereof. The two-component low-density PU structural adhesive is composed of Component A and Component B, where a volume ratio of Component A to Component B is 1:0.8-1.2, Component A includes polyether carbonate polyol, castor oil or / and modified castor oil, bisphenol A polyether polyol, a chain extender, hollow glass beads, molecular sieve, fumed silica, a silane coupling agent and catalysts, specifically, the polyether carbonate polyol and the castor oil or / and the modified castor oil cannot be zero at the same time; and Component B includes isocyanate prepolymer, polyisocyanate, hollow glass beads, fumed silica, and a dehydrating agent, the present disclosure solves the problems of poor storage stability, low bonding strength and low elongation at break of the low-density structural adhesive in the prior art.

The invention discloses an anti-yellowing PVB (Polyvinyl Butyral) adhesive for laminated glass and a preparation method thereof, and relates to the technical field of adhesives. The yellowing-resistant PVB glue for the laminated glass has the advantages that the yellowing resistance is high; the modified PVB / nano silicon dioxide composite material is prepared from the following raw materials in parts by weight: 55 to 65 parts of modified PVB resin, 4 to 6 parts of modified nano silicon dioxide, 15 to 20 parts of dioctyl adipate, 0.5 to 1 part of a compound antioxidant, 0.3 to 0.8 part of an ultraviolet absorbent UV-327, 0.2 to 0.5 part of a silane coupling agent KH-560, 0.3 to 0.6 part of ethylene bis stearamide, 0.1 to 0.3 part of 2-benzimidazole methyl carbamate, 3 to 5 parts of tris (1-chloro-2-propyl) phosphate and 0.1 to 0.3 part of nano titanium dioxide. 5 to 8 parts of isopropanol; 0.8 to 1.2 parts of polycarbodiimide. The special modified PVB resin and the nano silicon dioxide are matched with the auxiliary agents such as the compound antioxidant, the anti-yellowing performance of the PVB glue for the laminated glass is remarkably improved through precise process preparation, the components have a synergistic effect, the process is controllable, the product performance is stable, and the cohesiveness is good.