5253 results about "Glass transition" patented technology

The invention belongs to the technical field of copper-clad plates, and relates to a low-dielectric high-heat-resistance copper-clad plate and a preparation method thereof. By introducing the POSS resin, the dielectric constant of the copper-clad plate is effectively reduced, which is crucial for reducing signal delay and improving signal transmission efficiency. The introduction of the POSS resin not only improves the dielectric properties of the material, but also improves the glass transition temperature (Tg) of the material, which means that the physical and chemical properties of the material can be kept unchanged at a higher temperature, and the material is suitable for wider environmental conditions. By using the resin and the inorganic filler in a specific ratio, the copper-clad plate shows excellent copper foil peel strength, and ensures that the bonding force between the copper foil and the base material is not easily weakened under long-term use or severe conditions. Meanwhile, the material also has excellent CAF (conductive anode wire) resistance, can effectively prevent internal short circuit caused by moisture, and prolongs the service life of an electronic product.

The invention relates to the technical field of battery materials, in particular to a diaphragm binder composition, diaphragm binder powder, a diaphragm and a battery. The separator binder composition comprises polymer particles A and polymer particles B, the glass transition temperature Tg of the polymer particles A is-10 DEG C or below, the glass transition temperature Tg of the polymer particles B is 60 DEG C or above, the average particle size D50 of the polymer particles A is 500 nm or above, and the average particle size D50 of the polymer particles B is 300 nm or below. The diaphragm binder composition provided by the invention not only can effectively bond a pole piece and a diaphragm, but also is helpful for maintaining the uniformity and stability of a coating on the surface of the diaphragm, ensures that the diaphragm has high air permeability and good wettability to an electrolyte, and is helpful for prolonging the cycle life of a battery.

The invention provides an epoxy resin composition and application thereof, and the epoxy resin composition comprises the following components in parts by weight: 100 parts of epoxy resin, 30-200 parts of a curing agent, 30-100 parts of a flexibilizer and 1-100 parts of a filler, the toughening agent at least comprises a first toughening agent and a second toughening agent, and the glass transition temperatures of the first toughening agent and the second toughening agent are different. According to the epoxy resin composition, an adhesive film containing the epoxy resin composition is good in normal-temperature storage stability and high-temperature reactivity and can react quickly; the damping loss factor of the adhesive film in the range of 0-100 DEG C is low, the stability of the damping loss factor is good, the elastic modulus is high, and meanwhile, the adhesive film also has high toughness and peel strength.

The invention relates to the technical field of dielectric material preparation, in particular to a preparation method of a polymer dielectric film. The preparation method comprises the following steps: in an inert atmosphere, mixing a diamine monomer, a dianhydride monomer and an organic solvent, and carrying out condensation polymerization to obtain a precursor solution; wherein one of the diamine monomer and the dianhydride monomer contains benzyl groups; and carrying out imidization reaction and benzyl free radical cross-linking reaction on the precursor solution to obtain the polymer dielectric film. The glass transition temperature (Tg) of the polymer dielectric film prepared by the preparation method is improved, the modified film has excellent breakdown electric field and energy storage density in a high-temperature environment of 250 DEG C, and other complicated and high-technical-content processes are not added on the basis of a process for synthesizing a commercial polymer dielectric film; vacuum environment crosslinking is not needed, environmental protection and energy saving are achieved, the reaction degree is controllable, the surface of the prepared polymer dielectric film is smooth, and the cross section has no obvious defects.

The invention relates to the technical field of batteries, in particular to a non-fluorine polymer, a preparation method thereof, a composite diaphragm and application of the composite diaphragm. The non-fluorine polymer has a core-shell structure, a core layer comprises a polymer A, a shell layer comprises a polymer B, the glass transition temperature Tg1 of the polymer A is 91-155 DEG C, and the glass transition temperature Tg2 of the polymer B is-30-10 DEG C. The core layer and the shell layer of the non-fluorine polymer have proper glass transition temperature and good physical and chemical properties, so that the comprehensive performance of the composite diaphragm is improved, and the cycling stability and the safety performance of the battery are improved.

The invention provides a diaphragm adhesive composition, a diaphragm and a lithium ion battery, the solid content of the diaphragm adhesive composition is 10-40wt%, and when the solid content of the diaphragm adhesive composition is diluted to 5wt%, the surface tension of a diluent is not less than 28mN / m; the diaphragm adhesive composition comprises polymer particles A and a polymer adhesive B, wherein the solid mass ratio of the polymer particles A to the polymer adhesive B is 100: (3-30); the particle size of the polymer particles A is 0.2-10 [mu] m, and the glass transition temperature of the polymer particles A is 30-90 DEG C; and the polymer adhesive B is a water-based emulsion type adhesive, the particle size of polymer particles contained in the polymer adhesive B is 0.1-1 mu m, and the glass transition temperature of the polymer adhesive B is-50-20 DEG C. The diaphragm adhesive composition disclosed by the invention is not easy to spread on a base material, can prevent an adhesive glue solution from being quickly diffused on the surface of a diaphragm, forms controllable, uniform-size and uniformly-distributed adhesive coating points on the surface of the base material, and has small influence on the air permeability of the diaphragm.

The invention belongs to the technical field of electrochemistry, and particularly relates to a negative electrode binder which is composed of a core layer and a shell layer, and the core layer is coated with the shell layer. In one negative electrode binder, a core layer monomer used for synthesizing a core layer comprises ethylene glycol phenyl ether unsaturated acid ester. In the other negative electrode binder, the diameter of the core layer is 50-500 nm, and the thickness of the shell layer is 1-10 nm; or the glass transition temperature of the shell layer is greater than the glass transition temperature of the core layer; or the swelling degree of the core layer in the electrolyte is 20%-200%, and the swelling degree of the shell layer in the electrolyte is 1%-10%. The negative electrode binders have good flexibility, dispersibility, mechanical modulus and bonding strength, are beneficial to inhibition of volume expansion generated by a negative electrode active material in the charging and discharging process, and are beneficial to maintenance of structural stability in the long cycle process, so that the cycle performance of the battery is improved.

The present invention provides an adjustable underfill adhesive and a preparation method therefor, and a chip packaging structure. The underfill adhesive comprises the following components in mass percentage: 21-28% of a trifunctional epoxy resin, 8-19% of an amine curing agent, 54-66% of a filler, 0.2-0.4% of an accelerator, 0.1-0.3% of a silane coupling agent, and 0.1-0.2% of carbon black, wherein the molar ratio of the trifunctional epoxy resin to the amine curing agent is 1:0.7 to 1:1.4; and by controlling the molar ratio of the trifunctional epoxy resin to the amine curing agent to be 1:0.7 to 1:1.4, the glass transition temperature of the underfill adhesive can be controlled between 90°C and 180°C. In addition, by introducing the silane coupling agent, the degree of bonding between the filler and a thermosetting epoxy resin is improved, and thus the stability of the underfill adhesive is improved; moreover, an organic matrix-silane coupling agent-inorganic matrix bonding layer can be formed between an inorganic interface and an organic interface, so that the bonding strength of the underfill adhesive is improved, and thus the protection effect on a chip is enhanced.

A method of forming z-channels in a fibrous ceramic preform includes mounting the preform in a tooling assembly, the tooling assembly comprising a first fixture and a second fixture, heating the preform mounted in the tooling assembly to a temperature above a glass transition temperature of a polymer binder within the preform to induce a softened state of the polymer binder, inserting a plurality of needles sequentially through respective first holes in the first fixture, the preform, and respective corresponding second holes in the second fixture, and removing the plurality of needles leaving behind a corresponding plurality of z-channels in the preform.

The invention relates to the technical field of high polymer material chemistry, and discloses a high and low temperature resistant anti-yellowing optical adhesive and a preparation process thereof, the high and low temperature resistant anti-yellowing optical adhesive comprises the following components by weight: 40-60% of modified organic silicon resin, 20-30% of urethane acrylate, 10-15% of alicyclic epoxy resin, 0.5-5% of a nano inorganic filler, 0.8-2.5% of an anti-yellowing composite reagent, and the balance of a solvent. The coating is prepared from the following components in percentage by weight: 0.5 to 1.5 percent of 2-hydroxy-2-methyl-1-phenyl-1-acetone, 0.1 to 0.3 percent of fluorine modified polyacrylate flatting agent and 0.3 to 1.0 percent of chloroplatinic acid-divinyl tetramethyl disiloxane complex catalyst. The preparation method comprises the following steps: mixing alpha, omega-dihydroxy polydimethylsiloxane and phenyltrimethoxysilane according to a mass ratio of 8: 2-7: 3, adding 0.3-1.0% of a chloroplatinic acid-divinyl tetramethyl disiloxane complex catalyst, and raising the temperature by stages under the protection of nitrogen, so that the glass transition temperature of the adhesive can reach 120 DEG C below zero and 125 DEG C, and the temperature of the adhesive can reach 120 DEG C below zero and 125 DEG C below zero. And the long-term service requirement of the optical device in an extreme temperature environment is met.

The invention relates to the technical field of lithium ion batteries, in particular to a polymer coating diaphragm and a secondary battery. The polymer coating is a double-block bottle brush polymer particle with a core-shell structure, and the polymer particle comprises a bottle brush-shaped core polymer and a shell polymer; the glass transition temperature of the core polymer is greater than or equal to 90 DEG C, and the glass transition temperature of the shell polymer is less than or equal to-10 DEG C. According to the diaphragm binder disclosed by the invention, the core layer has a relatively high glass transition temperature, and meanwhile, the introduced bottle brush polymer structure can further effectively reduce the thermal shrinkage of a diaphragm and enhance the heat resistance; the shell layer has a low glass transition temperature, the cohesiveness at room temperature is significantly improved, and the introduced bottle brush polymer structure has high stability. The ceramic diaphragm prepared by adopting the diaphragm binder disclosed by the invention has relatively low thermal shrinkage rate and relatively strong binding power with a negative pole piece.

To provide a resin composition that effectively increases glass transition temperature while maintaining electrical specifications with low dielectric constants.SOLUTION: A resin composition includes a first resin polymerized by a monomer mixture including styrene, divinylbenzene, and ethylene, a second resin including a bismaleimide-modified polyphenylene ether resin, a divinylbenzene crosslinking agent, a halogen-free flame retardant, a spherical silica, and a siloxane coupling agent.SELECTED DRAWING: None

The invention provides a glass core plate of an FCBGA packaging substrate and a manufacturing method of the glass core plate, and the manufacturing method of the glass core plate comprises the following steps: providing a glass plate comprising a first surface and a second surface which are oppositely arranged, and defining at least one of the first surface and the second surface as a functional surface of the glass plate; forming a metal seed layer covering the functional surface of the glass plate, and forming a shielding layer on the surface, away from the glass plate, of the metal seed layer; patterning the shielding layer to form a plurality of first openings exposing the metal seed layer in the shielding layer; conductive circuits filling the first openings are formed, and the shielding layer is removed to obtain second openings located between the two adjacent conductive circuits; and removing the metal seed layer at the bottom of the second opening to obtain the glass core plate. According to the FCBGA packaging substrate, the glass plate which is low in thermal expansion coefficient and high in glass transition temperature is adopted as the core plate of the glass core plate in the FCBGA packaging substrate, warping of the substrate is reduced, and the reliability of the substrate and the yield of products are improved.

The invention discloses a high-cohesiveness polyimide composite film capable of being used for a flexible copper-clad plate and a preparation method of the high-cohesiveness polyimide composite film. The polyimide composite film is composed of a thermosetting polyimide supporting layer and a thermoplastic polyimide bonding layer arranged on at least one face of the thermosetting polyimide supporting layer. An interface layer formed by reacting amino-terminated hyperbranched polyamide grafted silicon dioxide particles with thermosetting polyamide acid is embedded between the thermosetting polyimide supporting layer and the thermoplastic polyimide bonding layer, and an end group of thermoplastic polyimide contains an imidazole ring capable of forming a complex with copper. The amino-terminated hyperbranched polyamide grafted silicon dioxide particles are embedded into the interface of the thermosetting layer and the thermoplastic layer, so that the contact area of the supporting layer and the adhesive layer is increased; the polyimide composite film with high cohesiveness, high dimensional stability, high heat resistance and low glass transition temperature is prepared.

The invention discloses supercritical fluid foaming polyimide wave-absorbing foam and a preparation method thereof.The thermoplastic polyimide is prepared by the steps that aromatic dianhydride, aromatic diamine and aliphatic diamine serve as comonomers, polyimide acid is generated through solution polymerization, and then high-temperature cyclization is conducted; wherein the mole number of the aliphatic diamine accounts for 10-50% of the total mole number of the diamine, and the free volume and glass transition temperature of a molecular chain are effectively regulated and controlled by introduction of the aliphatic diamine; the wave-absorbing foam is prepared by taking polyimide as a matrix, doping 1-20wt% of wave-absorbing filler, and foaming for 1-3 hours in a supercritical carbon dioxide or nitrogen environment at the temperature of 180-220 DEG C and the pressure of 9-25MPa, through molecular structure design, the adsorption capacity and impact resistance of polyimide to carbon dioxide are remarkably improved, and the prepared foam has the advantages of light weight, high porosity, uniform foam structure and excellent heat resistance, can realize effective electromagnetic wave absorption in an X wave band, and is suitable for the fields of aerospace stealth and electromagnetic compatibility protection.

The invention relates to the field of polyester materials, and particularly discloses modified polyester with low yellowness value and high glass transition temperature characteristics and a preparation method thereof, and the modified polyester is prepared by taking terephthalic acid, diphenyldicarboxylic acid and fluorenyl aromatic dicarboxylic acid as carboxylic acid monomers, respectively esterifying with ethylene glycol, and carrying out co-polycondensation on corresponding esterification products. According to the present invention, the biphenyldicarboxylic acid with the conjugated aromatic ring structure and the fluorenyl aromatic dicarboxylic acid monomer are selectively introduced to modify the PET, such that the regularity of the polyester chain segment is broken so as to ensure the optical performance of the polyester; the movement of a polyester chain segment is limited so as to improve the Tg value of polyester; and by matching with a novel preparation method, the yellowness value of the polyester material is reduced.

The invention discloses a photoresist micro-lens array preparation method and system, and relates to the field of micro-nano optical device manufacturing. The preparation method of the photoresist micro-lens array comprises the following steps: carrying out chemical mechanical polishing treatment on a silicon wafer, spin-coating photoresist on a substrate to form a cylindrical array, and eliminating solvent gradient through pre-drying; forming a fluorocarbon nano film on the surface of the photoresist through plasma deposition so as to reduce the surface energy of the photoresist; realizing hot reflux of the photoresist based on gradient annealing, wherein the gradient annealing comprises a preheating section, a main reflux section and a stable section; on the basis of the preheating section, glass transition stress is avoided, fluorine-containing gas and inert gas are synchronously introduced into the main backflow section to act on a plasma sheath layer, so that the flowing direction of photoresist is regulated and controlled, and the edge coffee ring effect is inhibited; the stable section synchronously performs plasma assistance to lock the shape; and the precision and the consistency of the micro-lens array are improved through segmented temperature regulation and control and a plasma auxiliary technology.

The invention discloses a preparation method of a high-temperature-resistant high-strength polyimide composite material, and relates to the technical field of polyimide composites.The preparation method comprises the following preparation steps that S1, a customized silane coupling agent is prepared; s2, preparing a bionic dynamic interface modified reinforcing filler, wherein the modified reinforcing filler is synergistically modified through a bionic coating and a customized silane coupling agent; and S3, preparing a polyimide precursor solution containing the dynamic network. According to the preparation method of the high-temperature-resistant high-strength polyimide composite material, through the integrated design of'customized silane coupling agent + bionic dynamic interface modification + dynamic network-containing polyimide precursor + gradient hot-pressing curing ', the glass-transition temperature of the prepared composite material is greater than or equal to 335 DEG C, the tensile strength is greater than or equal to 208 MPa, and meanwhile, the thermal repair efficiency at 180-250 DEG C is greater than or equal to 87%; the technical bottleneck that high temperature resistance, mechanical strength and repairing performance of the material are difficult to consider at the same time in the prior art is solved.

The invention relates to the technical field of batteries, in particular to a battery diaphragm, a preparation method thereof and a battery. The battery diaphragm comprises a base material layer and a dotted coating positioned on at least one side surface of the base material layer, the dotted coating comprises a non-fluorine composite material and a binding material; the non-fluorine composite material comprises aggregate of a plurality of unit materials, each unit material comprises a matrix and a coating layer located on the surface of the matrix, the matrix comprises a first polymer, and the coating layer comprises a second polymer; and the ratio eta of the thickness of the coating layer to the particle size of the unit material and the glass transition temperature Y of the second polymer meet the relational expression: Y = 100 eta-46. The battery diaphragm comprises the non-fluorine composite material and the binding material, the non-fluorine composite material is limited by satisfying the relationship, so that the adhesion difference between the diaphragm and an electrode plate at low temperature and high temperature is not large, and the whole performance of a battery cell is not greatly influenced after the battery cell preparation process is changed from hot pressing to cold pressing; and the cycling stability and the safety performance of the battery can be ensured.

The invention relates to the field of research, development and design of artificial intelligence materials, and provides a polyimide material glass transition temperature prediction method based on machine learning, and the method comprises the steps: collecting experimental data including the structure and glass transition temperature of a polyimide polymer; preprocessing the obtained data, and then dividing a training set and a test set based on the feature data and the label data; constructing a prediction model based on gradient lifting, and continuously adjusting parameters until optimal parameters are found; evaluating the training model by using evaluation parameters such as a decision coefficient and a mean square error, and finally confirming a prediction model; and inputting related parameters to the model based on the trained prediction model, and outputting the glass transition temperature of the corresponding polyimide. By adopting the gradient lifting model, the scientific research cost is reduced, the scientific research efficiency is improved, and a new path is opened up for the development of the high glass transition temperature polymer.

A glass material with low refractive index and radiation resistance, method for preparing the same, and applications thereof. The glass material consists of the following components by mole percent: 60-80% SiO2, 2-10% B2O3, 0.1-1% CeO2, 5-10% Na2O, 2-10% K2O, 1-8% Al2O3, 0-2% CaF2, 0-1% As2O3, and 1-5% alkaline earth metal oxides, wherein the alkaline earth metal oxides are selected from at least one of BaO, SrO, CaO, and MgO. The glass material has a refractive index of ≤1.47, a glass transition temperature of ≤550° C., a yield point temperature of 645° C., a softening point temperature of ≤748° C., and a coefficient of thermal expansion of (82-87)×10−7 / ° C. After exposure to a 4700 Gy dose of X-ray radiation, the transmittance decreases by ≤2%. The glass material can be used as cladding glass material for the preparation of optical glass fibers and fiber panels, capable of meeting the requirements for radiation environment applications.

The invention provides a bio-based epoxy monomer containing a Schiff base structure, a preparation method and application of the bio-based epoxy monomer, bio-based epoxy resin containing the Schiff base structure, and a preparation method and application of the bio-based epoxy resin, and relates to the technical field of epoxy resin. The bio-based epoxy monomer containing the Schiff base structure provided by the invention contains the Schiff base structure, and based on high bond energy and dynamic characteristics of the Schiff base, the thermal stability, flame retardant property and mechanical property of the bio-based epoxy resin containing the Schiff base structure prepared by taking the monomer as a raw material are synergistically improved. Moreover, the bio-based epoxy monomer containing the Schiff base structure, provided by the invention, is relatively small in molecular weight, relatively high in epoxy value, few in side chain substituent groups, simple in structure, relatively high in symmetry and simple in curing process with a curing agent, and the obtained bio-based epoxy resin containing the Schiff base structure is high in glass transition temperature and excellent in mechanical property and thermal stability; and the dynamic cross-linked network shows good dynamic performance, and has huge application potential in the fields of flame retardance, self-repairing and degradable recycling.

A method of manufacturing an adhesive member includes providing, for a substrate, a resin composition having a viscosity of about 5 cP to about 50 cP, as measured according to JISK2283 method, at about 25° C. The resin composition is exposed to a first light to form a preliminary adhesive member having a curing rate of about 80% to about 98%. The preliminary adhesive member is exposed to a second light having a light integral / dose that is more than that of the first light to form an adhesive member. The preliminary adhesive member may have a loss tangent (tan δ) of about 0.2 to about 0.6 and may have a glass transition temperature of about −70° C. to −30° C. Accordingly, the preliminary adhesive member and adhesive member formed by the method of manufacturing an adhesive member may exhibit increased reliability.

The invention relates to an outdoor anti-aging PP plate and a preparation method thereof, and belongs to the technical field of high polymer materials. The outdoor anti-aging PP plate comprises the following components in parts by weight: 40-80 parts of PP resin, 10-20 parts of glass fibers, 1-5 parts of an anti-aging modifier, 0.2-3 parts of a modified flame retardant, 0.1-1 part of a lubricant and 0.1-0.5 part of an antioxidant, hydroxybenzophenone in the modified anti-aging agent generates thermal vibration and releases energy when absorbing ultraviolet rays and being irradiated by the ultraviolet rays, and cooperates with butyltrimethoxysilane to protect the material from being damaged by the ultraviolet rays, and a maleimide group improves the glass transition temperature and the melting point and reduces the influence of high-temperature thermal aging; a B-O-C carbon layer is formed at a high temperature under the synergistic effect of boron and phosphorus of the modified flame retardant, flame-retardant gas is released, and the modified flame retardant and phosphorus-oxygen double bonds are synergistically flame-retardant, so that the flame-retardant property is remarkably improved; the outdoor anti-aging PP plate prepared by the invention not only has excellent anti-aging performance, but also has a good flame-retardant effect.

The invention provides a negative electrode plate. The negative electrode plate comprises a negative electrode current collector, a graphite negative electrode material layer positioned on the surface of the negative electrode current collector, and a mixed coating of graphite and polymer particles positioned on the surface of the graphite negative electrode material layer, the graphite negative electrode material layer comprises graphite, the mixed coating comprises graphite and polymer particles, and the average particle size D1 of the graphite in the graphite negative electrode material layer and the average particle size D3 of the polymer particles are both larger than the average particle size D2 of the graphite in the mixed coating. The glass transition temperature Tg of the polymer particles is 60 DEG C or below, the polymer modulus is 250-400 MPa, and the swelling degree in an electrolyte is 10-30%. The negative plate provided by the invention can form stable bonding with the diaphragm in the hot pressing process, and the bonding force is improved by more than one time; when the negative plate is applied to the lithium ion secondary battery, the cycle life of a battery cell can be effectively prolonged by more than 20%, and lithium is not separated out during charging.

The invention provides a compound containing a silicon group and an organic electroluminescent device thereof, and particularly relates to the technical field of organic electroluminescent materials. When the compound containing the silicon group is used as a covering layer material, the glass transition temperature is high, the thermal stability and the chemical stability are good, the light transmittance of a device can be improved, aging of the device is delayed, and therefore the service life of the device is effectively prolonged; and the compound has weak metal adsorption capacity, and can effectively inhibit the deposition of a metal electrode material on the surface of a nucleation inhibition layer when being applied to the nucleation inhibition layer, thereby improving the performance of the device. In conclusion, the silicon group-containing compound provided by the invention can be widely applied to the fields of panel display and the like, and has a good development prospect.

The invention belongs to the technical field of modified special plastics, and provides a polysulfone composite material for an extremely-high-temperature-resistant safety helmet and a preparation method and application thereof.The polysulfone composite material is prepared from, by mass, 24-40% of bisphenol A type polysulfone resin, and the melt index gt of the bisphenol A type polysulfone resin is measured at the temperature of 343 DEG C and 2.16 kg; the oxygen index gt is 5 g / 10 min; 30); the glass transition temperature of the nylon resin is greater than or equal to 130 DEG C, and the relative viscosity of the nylon resin is 1.8-2.2; 3-6% of a compatilizer; 5 to 10% of a maleic anhydride grafted styrene-ethylene-butylene-styrene block copolymer; 25-35% of glass fiber; 0.3%-0.7% of an antioxidant; and 0.3-0.7% of a lubricant. The composite material is prepared from the raw materials, and the prepared safety helmet has excellent comprehensive mechanical properties, such as combustion resistance, 150 DEG C bending strength, impact absorbing force and maximum lateral rigidity deformation at 150 DEG C.

The invention provides a solvent-free UV dielectric insulation protective coating as well as a preparation method and application thereof. The high-surface-energy and high-glass-transition-temperature UV-curable coating is prepared by combining flexible modified polyurethane acrylate, flexible acrylate, rigid acrylate with high glass transition temperature, a high-functionality acrylate cross-linking agent, methyl methacrylate with high dilutability and high glass transition temperature as well as a plurality of photoinitiators, auxiliaries, pigment and filler powder and the like. The invention relates to a dielectric insulation protective coating with high adhesive force. The prepared coating is a solvent-free 100% solid single component, is complete in mixing and dissolving, convenient to construct, high in light curing energy utilization rate, high in production efficiency and suitable for large-scale automatic large-scale flow line production, and compared with PSA back glue used for a traditional PET blue film, the outer surface of the coating has higher surface energy, and the coating has the advantages of being high in light curing energy utilization rate and high in production efficiency. And the film has considerable dielectric insulation performance and good edge covering protection performance, and meets the development requirements of a higher charging voltage platform of a fast-charging electric vehicle in the future.

The invention relates to the technical field of polyester resin, and discloses outdoor hydrolysis-resistant polyester resin and a preparation method and application thereof.The outdoor hydrolysis-resistant polyester resin is prepared from, by weight, 30-38 parts of polyhydric alcohol, 48-50 parts of binary acid, 20.5-28.5 parts of acidolysis agent and 0.1-0.12 part of onium salt curing accelerator; according to the invention, 2-butyl-2-ethyl-1, 3-propylene glycol is used as polyol, and an alkyl side chain is introduced into polyester molecules to generate steric hindrance and shielding effects, so that water molecules are difficult to attack adjacent lipid bonds, and the hydrolysis resistance of the polyester resin is improved. 2, 2 '-[(2-hydroxy-3-phenoxy propyl) azadiyl] diethanol contains a benzene ring structure with thermal stability, and is crosslinked into a polyester molecular chain, so that the glass transition temperature of the polyester resin can be increased, the heat resistance can be improved, and the boiling water resistance of a resin coating can be improved.

The present invention relates to an elastomeric laminate comprising at least two adjacent layers, wherein: the rubber composition constituting the first layer is based on 20 phr to 100 phr of at least one copolymer comprising ethylene units and 1,3-diene units of formula CH2=CR-CH=CH2, the ethylene units in the copolymer representing more than 50 mol% of the copolymer monomer units, and the symbol R represents a hydrocarbon chain having 3 to 20 carbon atoms, 0 phr to 80 phr of at least one diene elastomer having a diene unit weight concentration greater than 50%, 10 phr to 100 phr of a plasticizing system comprising at least one plasticizing resin having a glass transition temperature higher than 20°C and / or at least one plasticizer which is liquid at 23°C, and a reinforcing filler, and a crosslinking system; the rubber composition constituting the second layer is based on a diene elastomer having a diene unit weight concentration greater than 50% and a crosslinking system. The present invention also relates to a rubber article, in particular a pneumatic or non-pneumatic tire, comprising such a laminate.