1553results about "Ester polymer adhesives" patented technology

The invention belongs to the field of battery materials, and particularly relates to a high-adhesion battery diaphragm binder, slurry, a diaphragm and a preparation method of the high-adhesion battery diaphragm binder, and the high-adhesion battery diaphragm binder based on an acrylate copolymer is prepared through a specific reaction. And then, mixing the binder with two inorganic nano materials, namely a lithium-doped aluminum borosilicate nanowire and a sulfo-functionalized lithium zirconate titanate nanosheet, boehmite and / or aluminum oxide and the like, so as to prepare the high-adhesion diaphragm coating slurry. Wherein the nanowires provide mechanical enhancement and chemical crosslinking points, and the nanosheets improve the interface adhesion and the ionic conductivity. And finally, coating the slurry on the surface of a polypropylene diaphragm, and performing multi-stage drying and heat treatment to obtain the composite diaphragm. The diaphragm has extremely high coating bonding strength, excellent electrolyte wettability and good thermal dimensional stability and ionic conductivity, and is particularly suitable for high-energy-density lithium ion batteries and sodium ion batteries.

The application relates to the technical field of adhesives, and discloses a low-VOC flame-retardant double-faced adhesive for automobile interiors and a preparation method thereof. In the application, tetramethyl ethylene (epoxy propyl ammonium chloride) and bis (4-aminophenyl) -phenyl phosphate are reacted to obtain a cationic flame retardant, which is then added into a water-based acrylic resin emulsion to obtain a flame-retardant water-based acrylic resin adhesive and a flame-retardant double-faced adhesive. The cationic groups in the cationic flame retardant and the sodium carboxylate anions in the water-based acrylic resin form electrostatic force, the crosslinking degree between acrylic resin molecular chains is improved, the cohesion is increased, and the bonding performance and tensile shear strength of the adhesive are improved. The cationic flame retardant contains a triphenyl phosphate flame-retardant structure, has condensed-phase flame-retardant effect, improves the limiting oxygen index and the flame-retardant performance of the adhesive, and has good practical application in adhesives for new energy vehicles, double-faced adhesives and the like.

The invention provides an environment-friendly water-based pressure-sensitive adhesive as well as a synthesis method and application thereof. The environment-friendly water-based pressure-sensitive adhesive comprises a dehydroabietic acid-based acrylate derivative grafted acrylate emulsion and a rosin emulsion, wherein the acrylate emulsion is prepared from an acrylate monomer, a dehydroabietic acid-based acrylate derivative monomer, an emulsifier, an initiator and water through an emulsion polymerization reaction. The dehydroabietic acid-based acrylate derivative monomer is prepared from a rosin derivative dehydroabietic acid and a hydroxyl acrylate monomer through an esterification reaction; according to the environment-friendly water-based pressure-sensitive adhesive, the synthesis method and the application thereof, the comprehensive performance of the acrylate pressure-sensitive adhesive is improved, the environment-friendly water-based acrylate pressure-sensitive adhesive is developed, the rosin derivative is added as a synthesis or compounding raw material, dependence on fossil raw materials is reduced, and meanwhile, the environment-friendly water-based acrylate pressure-sensitive adhesive is prepared. The comprehensive performance such as initial adhesion and peel strength of the pressure-sensitive adhesive is remarkably improved, and the whole production and use process is free of VOC emission and environmentally friendly.

The invention belongs to the technical field of supporting films, and particularly relates to an acrylate pressure-sensitive adhesive, a supporting film adhesive tape, a preparation method and application. The acrylate pressure-sensitive adhesive is prepared from the following raw materials in parts by weight: 60 to 90 parts of acrylate soft monomer, 5 to 20 parts of polar functional monomer, 5 to 20 parts of high-Tg hard monomer, 0.1 to 0.5 part of initiator, 0.5 to 3 parts of polyfunctional thermocuring cross-linking agent and a proper amount of solvent. According to the acrylate pressure-sensitive adhesive disclosed by the invention, the acrylate pressure-sensitive adhesive which has the characteristics of low modulus and high cohesion microcosmically is prepared under a solution polymerization and thermocuring process through a specific'soft monomer-hard monomer-crosslinking agent 'formula system design. The pressure-sensitive adhesive macroscopically realizes the performance balance, which is difficult to realize at the same time, among adhesion, buffering and impact resistance.

The invention discloses a preparation method of a polymer adhesive capable of broad-spectrum adhesion based on a hydrogen bond-containing amphiphilic deep eutectic solvent of an acrylic acid derivative, and belongs to the technical field of polymer adhesives. The preparation method of the adhesive comprises the following steps: S1, mixing a hydrogen bond donor and a hydrogen bond acceptor, heating and stirring until the mixture is clarified to obtain a eutectic solvent; s2, adding an acrylate monomer and an acrylamide monomer into the eutectic solvent, and uniformly mixing to obtain a mixture; and S3, sequentially adding a chemical cross-linking agent and a photoinitiator into the mixture, and carrying out photo-initiation to obtain the adhesive. The adhesive prepared by the invention has the characteristics of high adhesive power, debonding as required, excellent waterproofness, efficient VOCs adsorption, adaptability to hydrophilic and hydrophobic materials and the like.

The application discloses a kind of binder, ceramic diaphragm and its secondary battery.The binder includes first polymer and second polymer, the first polymer and the second polymer are connected by chemical bond;The first polymer is polyacrylate polymer or SBR polymer containing first self-crosslinking structural unit, the Tg of the first polymer is ≤20 ℃, the second polymer is polyacrylic acid polymer or polyacrylamide polymer containing second self-crosslinking structural unit, the Tg of the second polymer is ≥80 ℃.The first polymer of low Tg is resistant to water and oil, but the heat resistance is generally, mainly plays the role of bonding, high Tg second polymer is resistant to oil and not resistant to water, mainly plays the role of heat resistance and improves electrolyte wettability, and by the interaction of first crosslinking structure and second crosslinking structure, so that binder simultaneously has excellent water and solvent resistance and heat resistance, and the affinity of electrolyte is better.

This application discloses a solution-type adhesive, a method for producing the same, and its use. The production of the adhesive mainly comprises the following steps: First, latex particles are obtained by emulsion polymerization of alkyl acrylate monomers, nitrile monomers, and functional monomeric acids. The latex particles have a uniform particle size and are rich in polar functional groups, and can serve as seeds for precipitation polymerization. Nitrile monomers, functional monomeric acids, and acrylamide are used as precipitation polymerization monomers, and the resulting oligomers are deposited on the seed polymer surface by hydrogen bonding and hydrophobicity, forming precipitated particles. Further neutralization with an alkaline solution yields a solution-type adhesive. The solution-type adhesive provided in this application is applied to the negative electrode of a lithium-ion battery, has high adhesive strength, low electrolyte swelling, a certain degree of processing flexibility, a simple manufacturing process, and high lot stability.

The invention discloses a flame-retardant low-VOCs aqueous adhesive and a preparation method thereof. The preparation method comprises the following steps: S1, preparing a pre-emulsion; S2, synthesizing a resin emulsion; S3, preparing a flame-retardant dispersion; the phosphate flame-retardant monomer participates in the copolymerization reaction of acrylate, and cooperates with hyperbranched ammonium polyphosphate and zinc borate to form a condensed phase and gas phase dual flame-retardant barrier; hydroxyl-containing phosphate is embedded into a solvent-free polyurethane curing agent system, so that aliphatic diisocyanate synchronously completes crosslinking, flame retardance and thickening under the action of an organic tin catalyst, and VOCs introduced by a traditional thickening agent are eliminated from the source; the final value of the NCO content is accurately controlled through a synchronous dropwise adding process and dynamic monitoring of the NCO content, so that the viscosity is stable, and sedimentation and layering are avoided; the long-standing contradiction of high flame retardance, namely high VOCs, and strong adhesion, namely weak constructability, in the field of waterborne adhesives is solved.

The invention relates to the technical field of sealing adhesive tape processing, in particular to a flame-retardant heat-conducting sealing adhesive tape and a preparation method thereof.The flame-retardant heat-conducting sealing adhesive tape comprises a release layer, an adhesive layer and a base material layer; the adhesive layer is prepared from the following raw materials in parts by weight: 15-25 parts of organic silicon modified acrylic resin, 10-20 parts of epoxy modified acrylic resin, 90-100 parts of heat-conducting filler, 5-12 parts of a flame retardant, 10-15 parts of a dispersing agent and 1-3 parts of a curing agent; the heat-conducting filler comprises aluminum oxide with hydroxyl on the surface; according to the formula, the adhesive tape has good heat-conducting property, excellent bonding strength, flexibility and storage stability under the condition of ultrahigh filling of 90-100 parts, and the bottleneck of performance degradation caused by poor compatibility and dramatic viscosity increase of a traditional high-filling system is broken through; and the requirements of efficient heat dissipation and long-term reliable sealing of the power battery module are met.

Provided are: a water-dispersed pressure-sensitive adhesive composition that has an excellent pressure-sensitive adhesive strength, and that can achieve both of adhesiveness to an adherend and peelability; and a pressure-sensitive adhesive sheet for re-peeling using the water-dispersed pressure-sensitive adhesive composition. The water-dispersed pressure-sensitive adhesive composition includes: a water-dispersed acrylic polymer; an active energy ray-curable resin; and a photopolymerization initiator, wherein the water-dispersed acrylic polymer is a polymer having two or more glass transition temperatures.

The invention discloses an environment-friendly water-based composite adhesive for transfer paper and a preparation method of the environment-friendly water-based composite adhesive. The environment-friendly water-based composite adhesive is prepared from the following raw materials in percentage by mass: 28-45% of methyl methacrylate; 30 to 40% of butyl acrylate; 0.3%-0.8% of an initiator; 2-4% of an emulsifier; 1-5% of butadiene; 0.5 to 1.5 percent of a tackifier; 0-0.15% of a reinforcing agent; 0.1 to 0.5 percent of a pH regulator; 0.05-0.25% of a defoaming agent and the balance of water; the preparation process comprises the following steps: S1, prepolymerizing butadiene; s2, preparing an acrylate emulsion; and S3, mixing and blending. The preparation method has the advantages that the butadiene, the tackifier and the reinforcing agent are used in the formula to regulate and control the adhesive force and the toughness of the adhesive film, the types of the acrylate monomers are reduced, and the defects that the regulation and control capability is limited, the variables are multiple and the parameters are difficult to consider simultaneously when the types and the contents of the acrylate soft and hard monomers are accurately controlled to regulate and control the parameters are overcome.

The invention discloses an adhesive tape for battery insulation and a compounding process thereof, and relates to the technical field of battery insulation. The adhesive tape for battery insulation is prepared by taking a polyimide film as a base film and coating an adhesive, the adhesive is prepared from the following raw materials in parts by weight: 70 to 90 parts of polyacrylate emulsion, 6 to 12 parts of isocyanate curing agent, 4 to 8 parts of terpene resin, 10 to 18 parts of modified aluminum hydroxide, 5 to 9 parts of modified aluminum oxide, 7 to 14 parts of nano montmorillonite, 0.8 to 2.5 parts of antioxidant 168, 0.5 to 2 parts of ultraviolet light absorber UV-327, 2.5 to 5 parts of silane coupling agent KH-570, 31 to 48 parts of propylene glycol methyl ether acetate and 3 to 6 parts of glycerol. The adhesive tape for battery insulation is matched with modified aluminum hydroxide and aluminum oxide to synergistically improve the performance. The product has excellent insulativity, heat resistance and stability, the processing process is controllable, and strict use requirements in the field of batteries are met.

The composition includes an acrylic monomer having a carboxylic acid group, an acrylic monomer having a hydroxyl group, at least one of an alkyl acrylate or alkyl methacrylate, and from 15 to 22 percent by weight of a compound composed of divalent segments L and at least two X groups. The divalent segments L are represented by formula L. Each segment L is independently directly bonded to two secondary N atoms, two tertiary N atoms, or a secondary and a tertiary N atom. Each R1 represents an alkylene group having from 1 to 4 carbon atoms, and at least some of the R1 groups are —CH2—CH2—CH2—CH2—. Each X group is independently represented by the formula CH2═C(R)—C(O)—O—V—W—C(O)—. Articles and methods using the composition are also described.

An adhesive composition may include at least about 2 wt. % and not greater than 49 wt. % of a (meth)acrylic based polymeric component A for a total weight of the adhesive composition, at least about 51 wt. % of a (meth)acrylic based polymeric component B for a total weight of the adhesive composition, and at least about 0.1 wt. % and not greater than about 30 wt. % of a tackifier component for a total weight of the adhesive composition. The (meth)acrylic based polymeric component A may have a glass transition temperature (Tg) of at least about 40° C. The (meth)acrylic based polymeric component B may have a glass transition temperature (Tg) of not greater than about 20° C. Further, the (meth)acrylic based polymeric component B may be acid-free.

The invention discloses a double-layer acrylic acid OCA optical adhesive for a folding screen and a structural characterization method of the double-layer acrylic acid OCA optical adhesive, and belongs to the technical field of optical adhesives. The OCA optical cement comprises an upper high-creep layer and a lower high-recovery layer, and an intersoluble cross-linked structure is formed on the interface of the two layers through a gradient curing process. The upper layer formula contains 70-90 parts of 2-ethylhexyl acrylate and 10-30 parts of hydroxy butyl acrylate; the formula of the lower layer comprises 20-35 parts of isobornyl acrylate, 50-70 parts of 2-ethylhexyl acrylate and 5-15 parts of hydroxy butyl acrylate. And the longitudinal crosslinking density gradient is represented by adopting a unilateral nuclear magnetic resonance depth analysis technology. The contradiction between high adhesion and high resilience of the folding screen OCA is solved, high light transmittance, low haze, high stripping force and high creep recovery rate are achieved, and the resistance change rate is remarkably reduced after dynamic folding.

The invention relates to the technical field of optical transparent adhesives, and particularly discloses a flexible screen optical transparent adhesive film and a preparation method of the flexible screen optical transparent adhesive film. Comprising the following steps: mixing 2-ethylhexyl acrylate, 2-[2-[2-(2-hydroxyethoxy) ethoxy] ethoxy] ethyl acrylate, an acrylic acid short-chain prepolymer, a chain transfer agent and a photoinitiator, stirring, and performing ultraviolet irradiation to obtain an acrylic acid prepolymer; adding a coupling agent, a cross-linking agent, an antioxidant and a photoinitiator into the acrylic prepolymer, mixing, stirring, and carrying out vacuum defoaming to obtain a mixture; and filling the mixture between the release protective films and then carrying out ultraviolet curing. The flexible screen optical transparent adhesive film provided by the invention can meet low elastic modulus at normal temperature and low temperature, high peel strength at normal temperature and high temperature and excellent creep property, can balance the three components, can meet various requirements of flexible screen display equipment at the same time, and has a good application prospect.

The invention discloses a high-temperature-resistant and high-modulus adhesive and a preparation method thereof, and relates to the technical field of adhesives. The water-based adhesive comprises the following raw materials: 40-60 parts of a soft monomer, 20-30 parts of a hard monomer, 5-10 parts of a functional monomer, 1-3 parts of a cross-linking agent, 0.5-1.5 parts of an initiator, 2-5 parts of a modified nano filler and 30-50 parts of a solvent, the functional monomer is prepared by compounding N-methoxy methyl acrylamide, acrylic acid and 2-acrylic acid-hexahydro-4, 7-methylene-1H-indenyl ester according to a mass ratio of 2 to 1 to (1 to 1.5); the cross-linking agent is prepared by compounding N, N '-methylene bisacrylamide and 1, 1, 3, 3-tetramethyl-1, 3-divinyl disilazane according to a mass ratio of 1: (0.5 to 1). The adhesive has the advantages of favorable adhesive property, favorable high-temperature resistance and high modulus.

The invention belongs to the field of special adhesives, and discloses an all-polymer super-water-resistant UV pressure-sensitive adhesive capable of being rapidly cured and a formed pressure-sensitive adhesive tape. The pressure-sensitive adhesive is prepared by polymerizing a free radical thermal initiator, a chain transfer agent, an inert organic solvent and 100 parts by mass of (methyl) acrylate at 75-85 DEG C, heating, and carrying out reduced pressure distillation to remove the solvent. The pressure-sensitive adhesive is coated on a PET (polyethylene terephthalate) or BOPP (biaxially-oriented polypropylene) film base material in a hot melting manner or a solution manner, and is irradiated by ultraviolet light to obtain the formed pressure-sensitive adhesive tape. The prepared pressure-sensitive adhesive can be rapidly cured, and the cured pressure-sensitive adhesive tape also has relatively high peel strength, high holding power and stability, has no adhesive residue, and has a wide application prospect in humid and water environments.

To achieve an anaerobic adhesive composition capable of suppressing occurrence of coating failure during coating. The anaerobic adhesive composition of the present invention includes a (meth)acrylic monomer, an organic peroxide, a curing accelerator, and an isoparaffin wax.

The invention relates to a high-temperature-resistant, high-humidity-resistant and warping-resistant pressure-sensitive adhesive, an adhesive tape as well as a preparation method and application of the adhesive tape. The high-temperature-resistant, high-humidity-resistant and warping-resistant pressure-sensitive adhesive comprises a low-Tg acrylate copolymer component and a high-Tg acrylate copolymer component, the glass transition temperature of the low-Tg acrylate copolymer component is not higher than-30 DEG C; the acrylate copolymer component with high Tg has a cross-linked structure. The high-temperature-resistant and high-humidity-resistant warping-resistant pressure-sensitive adhesive has excellent adhesion and stripping force, especially excellent high-temperature-resistant and moisture-resistant performance, is suitable for adhesion and fixation of PC and aluminum materials, and can reduce the problems of warping and falling between the PC and the aluminum materials.

The invention relates to the technical field of pressure-sensitive adhesives, in particular to an impact-resistant substrate-adhesive-free protective adhesive tape and a preparation method thereof. The adhesive comprises a mixed solvent, a hard monomer, a soft monomer, a functional monomer, an initiator, tackifying resin and a curing agent, and the mass ratio of the hard monomer to the soft monomer is 4: 6; the adhesive tape prepared by the invention has better anti-buffering and energy-absorbing effects, also has certain flexibility, namely compression performance, and cannot cause physical damage to a used part due to over-rigidity of the adhesive tape so as to face large-amplitude impact influence or small-amplitude long-time impact influence in a use scene.

To provide a surface protective film having a high inhibiting effect on curling of an optical film and an optical component using the same.SOLUTION: There is provided a surface protective film P in which a first transparent film 1, a first adhesive layer 2, a second transparent film 3 and a second adhesive layer 4 are laminated in sequence. The storage modulus of the first adhesive layer 2 is 1.0×104 Pa or more and less than 8.0×104 Pa at 23°C. The adhesive strength of the first adhesive layer 2 is higher than that of the second adhesive layer 4. The adhesive strength of the second adhesive layer 4 to glass is 0.5 N / 25 mm or less.SELECTED DRAWING: Figure 1

The water-peelable optical adhesive sheet according to the present invention has an adhesive force (Fw1) of 0.5 N / 10 mm or less in a prescribed water-peelable test, and an adhesive force (Fz) of 1.0 N / 10 mm or more in a prescribed high-temperature and high-humidity peelable test.

The invention discloses a peelable clothing plate-making composite material and a preparation method thereof, and relates to the technical field of clothing manufacturing and design, in particular to a peelable clothing plate-making composite material and a preparation method thereof, and the peelable clothing plate-making composite material comprises a cloth layer, an adhesive layer, a paper layer and a release coating. The cloth layer is preferably 120 gsm cotton grey cloth, and the paper layer is 60-90 gsm printing paper. The adhesive tape is characterized in that the adhesive layer is an acrylic hot-melt pressure-sensitive adhesive with low-viscosity peelable characteristics, and is coated in a dot-shaped or grid-shaped form so as to provide an easy-to-peel starting edge. The preparation method comprises the following steps: coating the adhesive layer on one layer of base material, compounding with the other layer, and applying the release coating on the upper end of the paper layer. The structure ensures that the composite material is easy to cut in the clothing pattern making process, no adhesive residue exists after stripping, and the requirements of fashion pattern making for strength, operation convenience and modifiability are met.

Provided is a hot-melt pressure-sensitive adhesive composition which enables to form a pressure-sensitive adhesive layer without allowing the progression of rapid gelation at the time of heating and melting. The pressure-sensitive adhesive composition provided by the present invention is a solvent-free hot-melt pressure-sensitive adhesive composition. The pressure-sensitive adhesive composition includes a base polymer, an isocyanate crosslinking agent, and a tackifier A represented by the following general formula (1):         R-[(CH3)2C6H2-(CH2O)n-CH2]m-OH     (1) (in the general formula (1), R is a hydrogen atom or a hydroxyl group, m is 9 to 16, and n is 0 to 3). A content of the tackifier A with respect to 100 parts by weight of the base polymer is 1 part by weight to 10 parts by weight.

The invention belongs to the field of protective films, and relates to an acrylic protective film for a metal grid touch sensor, the acrylic protective film comprises an acrylic acid adhesive layer, the acrylic acid adhesive layer comprises the following substances by weight: 100 parts of acrylic resin, 2-6 parts of a curing agent, 0.05-0.5 part of a catalyst, 2-6 parts of a retarder, 1-10 parts of a plasticizer, 0.1-0.5 part of a leveling agent, and 110-120 parts of a solvent. According to the technical scheme, the problems that after a protective film is attached to the metal grid sensor, adhesive residues are prone to occurring, and the dyne value of the surface is reduced are effectively solved, and the better subsequent ink printing effect is achieved.

To provide a pressure-sensitive adhesive composition capable of forming a pressure-sensitive adhesive sheet having a high refractive index and capable of forming a pressure-sensitive adhesive sheet more suitable for use in an image display device usable under various environments.SOLUTION: The provided pressure-sensitive adhesive composition contains at least one selected from the group consisting of a monomer component M and a polymer thereof, wherein the monomer component M contains a monomer a containing an aromatic ring and not containing a nitrogen atom, a monomer b containing a ring structure containing a nitrogen atom, and a monomer c containing a hydroxyl group. The sum of the content of the monomer (a) and the content of the monomer (b) in the monomer component M is ≥ 50 wt.%. The monomer component M contains the monomer b in an amount of 0.1 to 8 wt%.SELECTED DRAWING: Figure 1

A facade surface covering for installation on a surface of a structure, wherein the facade surface covering comprises one or more surface elements, and the surface elements comprise a flexible material comprising a flexible polymer component and a cementitious material component.

The application discloses an ionic crosslinking agent and a preparation method thereof, a water-based acrylic pressure-sensitive adhesive with high initial adhesion and high holding adhesion for paper labels and a preparation method thereof, and the ionic crosslinking agent is a reaction product of an aminoguanidine salt and a polyglycidyl ether. The water-based acrylic pressure-sensitive adhesive with high initial adhesion and high holding adhesion comprises 70-90 parts of a water-based acrylic emulsion, 0.1-2 parts of the ionic crosslinking agent and 10-30 parts of a water-based tackifying resin. The ionic crosslinking agent forms an ionic bond with carboxyl in the water-based acrylic pressure-sensitive adhesive, and can improve the holding adhesion of the adhesive layer without affecting the initial adhesion and the peeling force of the adhesive layer.

The present invention provides a photoinitiator including at least one benzophenone group and a urethane bond, an adhesive composition including the photoinitiator, an adhesive film including an adhesive layer including a photocured product of the adhesive composition, and a method for preparing the adhesive film.