164 results about "Acrylic adhesive" patented technology

The invention relates to the technical field of semiconductor wafer processing, and particularly discloses an adhesive tape for semiconductor wafer thinning and a preparation process thereof. The adhesive tape for semiconductor wafer thinning comprises a base material layer and a bonding layer arranged on the surface of the base material layer, the base material layer is made of polyolefin, and the bonding layer is a modified acrylic acid adhesive layer; the modified acrylic acid adhesive layer is prepared from the following raw materials in parts by weight: 60 to 70 parts of 2-ethylhexyl acrylate, 15 to 25 parts of butyl acrylate, 5 to 10 parts of methyl methacrylate, 2 to 5 parts of hydroxyethyl acrylate, 0.5 to 2 parts of glycidyl methacrylate, 1 to 3 parts of a modifier, 0.8 to 1.2 parts of an isocyanate cross-linking agent, 0.3 to 0.8 part of an epoxy cross-linking agent and 0.3 to 0.8 part of azodiisobutyronitrile. According to the adhesive tape for semiconductor wafer thinning, the fixing and protecting effects on the wafer are improved.

The invention relates to a method for manufacturing a wash-off label (2) comprising a face (1) and a pressure sensitive adhesive layer (4), wherein the face (1) comprises a thermoplastic film, and the method comprises applying an acrylic adhesive onto a first surface of the face (1), wherein the acrylic adhesive comprises a wash-off additive, the wash-off additive comprising are sinous material, and a grafted rosin ester which is a rosin ester grafted with a capped polyalkylene glycol, wherein the capped polyalkylene glycol is apolyalky lene glycol end-capped by an alkyl ether, and drying the acrylic adhesive in order to form an acrylic pressure sensitive adhesive onto the first surface of the face (1), thereby obtaining the wash-off label (2). The invention further relates to a wash-off label.

The utility model relates to the technical field of photovoltaic packaging, and discloses a composite polyester backboard and a flexible photovoltaic assembly. The composite polyester backboard comprises a first base film and a second base film which are sequentially laminated from bottom to top, an outer weather-proof coating is arranged on the lower surface of the first base film, an inner bonding layer is arranged on the upper surface of the second base film, and the inner bonding layer is bonded on the lower surface of a photovoltaic cell; a composite adhesive layer is arranged between the first base film and the second base film; the first base film and the second base film are polyester base films, and the composite adhesive layer is an epoxy acrylic adhesive layer. The composite polyester backboard has the advantages of high strength, weather resistance, aging resistance, good cohesiveness with a packaging adhesive film, small thermal shrinkage and low production cost, avoids the problem of edge warping of the flexible photovoltaic module, reduces the power attenuation of the flexible photovoltaic module after a hail test, and is helpful for improving the packaging reliability and long-term power generation power of the flexible photovoltaic module.

The invention discloses a high-wear-resistance nano filler modified rubber material and a preparation method thereof, and belongs to the technical field of rubber material modification. The preparation method comprises the following steps: by taking water-soluble polyacrylic acid micelles as a template, controlling the hydrolysis rate of tetraethyl orthosilicate by regulating and controlling the dosage of ammonia water, so as to prepare hollow SiO2 nanoparticles with a porous shell layer and a stable structure; and then synergistic modification is carried out through a PEG-PLA block copolymer and a silane coupling agent KH550, so that the dispersity and compatibility of particles are improved. And blending and banburying the modified porous hollow SiO2 particles and butadiene styrene rubber slurry, and carrying out vulcanization molding to obtain the modified rubber material. The wear resistance and tensile strength of the rubber are improved, good elasticity and elongation at break are kept, high strength, high wear resistance and high toughness are considered, and the process is mild and controllable.

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 reinforcing film which includes a base material layer and an adhesive layer, achieves both excellent low elasticity and excellent heat resistance, and hardly causes, for example, IC connection failure.SOLUTION: A reinforcing film according to an embodiment of the present invention is a reinforcing film including a base material layer and a pressure-sensitive adhesive layer, in which the pressure-sensitive adhesive layer is formed of an acrylic pressure-sensitive adhesive, the pressure-sensitive adhesive layer has surface elasticity at 25 °C of from 50kPa to 1000kPa, and an MD direction heat shrinkage rate when the reinforcing film is heated at 180 °C for 5 minutes is 1.0% or less.SELECTED DRAWING: Figure 1

The invention relates to an HHOF-TGU307 enhanced acrylic acid adhesive as well as a preparation method and application thereof, and belongs to the technical field of macromolecular functional materials. Aiming at the problem that the existing acrylic acid adhesive is difficult to meet the high-performance requirement in the aspects of bonding strength and mechanical property, and particularly the defects of insufficient bonding strength, easy aging, interface failure and the like in the emerging application fields of new energy and the like, HOF-TGU307 (hydrogen bond organic framework) is introduced into an adhesive system; the cohesive force and the adhesion capacity with a base material are obviously improved. The HOF-TGU307 material is a novel crystalline organic porous material with high specific surface area, high crystallinity and adjustable aperture, the HOF-TGU307 material shows unique solution processability and easy regeneration due to reversibility and flexibility of hydrogen bonds, and the HOF-TGU307 material has good biocompatibility and low cytotoxicity due to the metal-free characteristic; the characteristics enable the HOF to become a new platform of functional materials. The adhesive is formed by polymerization of two acrylic monomers in an ethanol solution through ultraviolet initiation, the process is simple and environment-friendly, and the obtained product has good storage and transportation stability. Performance tests show that the bonding strength of the adhesive on a PMMA (polymethyl methacrylate) base material can reach 1.36 MPa, and Fourier infrared spectroscopy and scanning electron microscope analysis verify good compatibility and dispersion state between HOF-TGU307 crystals and a polymer matrix. The adhesive provided by the invention has wide application prospects in the fields of structural bonding, photoelectric materials, automobiles, new energy and the like.

A silicone-acrylic adhesive is made from a combination of I) a first aqueous emulsion containing a soft acrylic polymer, II) a second aqueous emulsion containing a hard acrylic polymer, and III) an aqueous emulsion of a silicone resin. The silicone-acrylic binders can be used to prepare thermal insulation coating compositions that can be applied to metal (e.g., steel) substrates or primed substrates. A thermal barrier coating prepared by drying the thermal barrier coating composition provides corrosion resistance under thermal barrier to a metal or primed substrate.

The utility model discloses a quick coating device for acrylic foam tape, which relates to the technical field of acrylic foam tape processing and comprises a worktable, a storage box is fixedly connected to the top of the worktable, an anti-solidification slicking mechanism is arranged on one side of the storage box, and the anti-solidification slicking mechanism comprises a first motor support. And one side of the storage box is fixedly connected with a first motor bracket. Through the arrangement of the anti-solidification slicking mechanism, the effects of preventing an acrylic adhesive from solidifying and conveniently slicking the acrylic adhesive on a base material can be achieved, and in the using process, the situation that the acrylic adhesive cannot be prevented from being solidified, so that the acrylic adhesive cannot be solidified after being coated for a long time can be avoided. And the acrylic adhesive is solidified in the storage box, so that the device cannot continue to carry out normal coating work, the coating work is interrupted, and a worker needs to spend extra time to melt the acrylic adhesive, and the working efficiency of the device is ensured.

The present application provides a two-component type acrylic adhesive for vulcanized rubber with excellent adhesion. The two-component type acrylic adhesive for vulcanized rubber of the present application is composed of an A agent and a B agent, wherein the A agent contains a (meth)acrylate represented by the following formula (1) and a radical generator, and the B agent contains a (meth)acrylate represented by the following formula (1), a reducing agent, and a polyurethane. CH2=C(R 11 )‑CO‑O‑R 12 (1) In formula (1), R 11 represents a hydrogen atom or a methyl group, and R 12 represents an alkyl group having 4 to 17 carbon atoms.

This invention discloses a coated modified zinc powder and its preparation method, belonging to the field of metal powder surface modification technology. The coated modified zinc powder uses zinc powder as its core, with a water-soluble polyacrylic acid (PAA) micelle layer formed by aqueous dissolution and ethanol-induced precipitation. This micelle layer is insoluble in ethanol but soluble in water. The preparation method includes zinc powder pretreatment, PAA aqueous dissolution, micelle coating, and post-treatment steps. The key step is to inhibit micelle agglomeration by intermittently replenishing deionized water, achieving uniform coating. This invention solves the contradictions of existing zinc powder oxidation, agglomeration, and storage and use. The modified zinc powder exhibits significantly improved storage stability, rapid removal of the micelle layer in the aqueous phase during use to restore its intrinsic activity, and excellent dispersion performance. The process is simple and easily scalable, making it suitable for anti-corrosion coatings, chemical catalysis, and other fields.

The invention relates to a high-temperature-resistant acrylic acid protective film for a Micro LED screen manufacturing process and a preparation method of the high-temperature-resistant acrylic acid protective film, and belongs to the technical field of protective films. The high-temperature-resistant acrylic acid protective film comprises a base material layer, a release layer arranged on the base material layer and a modified acrylic acid adhesive layer arranged between the base material layer and the release layer, the modified acrylic acid adhesive layer comprises the following components in parts by mass; 100 parts of acrylic resin, 5-15 parts of long-chain alkyl silicone oil, 0.5-2 parts of an epoxy curing agent and 0.1-0.5 part of an antistatic agent; on one hand, the long-chain alkyl silicone oil has excellent temperature resistance, the chain segment is soft, the infiltration capacity on the interface of a pasted object can be enhanced, and bubbles are effectively prevented from being generated between the protective film and the pasted object in a high-temperature environment; the problem of viscosity climbing under a high-temperature condition can be greatly inhibited, and a stable and reliable protection effect is provided for a Micro LED screen manufacturing process.

The invention relates to a thermosetting type heavy industry adhesive-residue-free aluminum-plastic composite pressure-sensitive adhesive tape and a preparation method thereof.The thermosetting type heavy industry adhesive-residue-free aluminum-plastic composite pressure-sensitive adhesive tape comprises a pressure-sensitive adhesive layer and a base material layer, and the pressure-sensitive adhesive layer is prepared from, by weight, 80-100 parts of acrylic adhesive, 6-15 parts of tackifying resin, 1-10 parts of methyl methacrylate, 1-2 parts of coupling agent, 1-2 parts of curing agent, 20-30 parts of ethyl acetate and 20-30 parts of methylbenzene. The tackifying resin is introduced, the polarity of the adhesive layer is enhanced, the adhesive force is improved, meanwhile, the methyl methacrylate is introduced, the glass-transition temperature (Tg) is reduced, the flexibility and flowability of the adhesive layer are improved, and no adhesive residue exists in the heavy industry.

The invention belongs to the technical field of adhesives, and particularly relates to an electrolytic adhesive tape and a preparation method thereof. The electrolytic adhesive tape comprises a first release film layer, a viscosity reducing adhesive layer, an aluminum foil base material layer, an insulating layer, an acrylic acid adhesive layer and a second release film layer from top to bottom. The insulating layer can prevent current short circuit and guarantee stripping directionality; an ionic conductor polymer is introduced into the viscosity reducing adhesive layer, so that the adhesive tape can be electrified to realize the viscosity reducing effect, and the ionic conductor polymer is prepared by polymerizing methacryloylethyl sulfobetaine, oxirane-2-yl methyl 4-vinyl benzoate, 1-benzyl-3-vinyl imidazole and organic conductive particles; the 1-[3-(triethoxysilyl) propyl]-3-methylimidazolium chloride is grafted, so that the leakage of the ionic liquid component is reduced, and the electrifying visbreaking time of the electrolytic adhesive tape is shortened, thereby achieving the technical effects of quick debonding and no residue.

The utility model discloses a hot bending tempered glass film which comprises a hot bending glass substrate, a sandwich adhesive layer and an epoxy resin adhesive edge sealing layer. The edge of the hot bending glass substrate is finely polished, so that the edge is smooth and is not easy to warp. The sandwich glue layer is arranged on the lower surface of the hot bending glass base material, is used for bonding the hot bending glass base material and a mobile phone screen, and comprises a high-transmittance silica gel coating layer, a first base material layer, a silica gel filling layer, a second base material layer and an OCA acrylic glue coating layer which are sequentially arranged from top to bottom. And the epoxy resin adhesive edge sealing layer is used for sealing the edge of the sandwich adhesive layer to prevent dust and impurities from entering. According to the utility model, through the multi-layer sandwich glue layer design of the high-transmittance silica gel coating layer, the silica gel filling layer and the OCA acrylic glue coating layer and the epoxy resin glue edge sealing process, rapid exhaust, strong bonding effect and automatic filling of screen radian tolerance can be realized, bubbles and white edges are effectively reduced, the bonding effect is improved, and the product quality is improved. And the requirements of users on aesthetic property and practicability are met.

The invention discloses an acrylic acid easy-to-pull adhesive as well as a preparation method and application thereof. The acrylic acid easy-to-pull adhesive comprises a first UV high-molecular-weight acrylic acid adhesive layer, a first bottom coating, a base material layer, a second bottom coating and a second UV high-molecular-weight acrylic acid adhesive layer which are sequentially stacked in the thickness direction. The preparation method comprises the steps that the upper surface and the lower surface of a TPU base material are evenly coated with a primer respectively, curing treatment is conducted, and a second primer layer and a first primer layer are correspondingly formed respectively; and uniformly coating the UV acrylic adhesive material on the surfaces of the second primer layer and the first primer layer respectively, and then performing UV curing to form a second UV high molecular weight acrylic adhesive layer and a first UV high molecular weight acrylic adhesive layer respectively, thereby obtaining the acrylic easy-to-pull adhesive. The acrylic acid easy-to-pull adhesive disclosed by the invention has the advantages of high temperature and high humidity resistance, difficulty in adhesive residue, high cohesion, high tensile property and the like, and can be widely applied to the field of electronic product assembly.

The present application relates to the technical field of acrylic adhesive, in particular to a SCF assembly buffer adhesive film and a preparation method thereof.The present application comprises an acrylic buffer layer and a bonding force improvement layer prepared from two modified acrylic resins, wherein the acrylic buffer layer comprises solvent, methyl acrylate, isooctyl acrylate, butyl acrylate, hydroxyethyl acrylate, azobisdimethylvaleronitrile, alpha-methyl styrene dimer, ethylene glycol dimethacrylate and 2,2-dimethoxybutane; the bonding force improvement layer comprises solvent, isooctyl acrylate, hydroxybutyl acrylate, glycidyl methacrylate, N-(isobutoxy) methacrylamide and azobisdimethylvaleronitrile; the pure adhesive film structure used in the present application can achieve the premise of the foam cushioning performance, has superior flatness, solves the poor adhesion of the foam due to the foaming process factors, and solves the poor orange peel of the display appearance.

This invention relates to a method for preparing an isocyanate-ethyl methacrylate-hydroxyl-terminated polybutadiene functionalized prepolymer, an acrylic adhesive with high elongation and toughening properties enhanced by the prepolymer, and its application method. The invention belongs to the technical field of acrylic adhesives. This invention aims to solve the problem that existing acrylic adhesives cannot simultaneously achieve simple processing, strong interfacial bonding, high toughness, high elongation, and excellent environmental resistance. Prepolymer preparation: 1. Weighing raw materials; 2. Preparation of the functionalized prepolymer. Acrylic adhesive: It consists of separately packaged first and second components; Bonding method: Mix the first and second components, then apply to the surface of the substrate to be bonded and cure at room temperature.

A device for the photocatalytic treatment of water is described, comprising a substrate with at least one surface on which a photocatalyst for the treatment of water is immobilized with an acrylic adhesive and a binder, a method for manufacturing the device, its use for removing impurities, and a device for removing impurities from water comprising this device.

The invention relates to an acrylic acid glasses edge sealing adhesive tape and a preparation method thereof, and belongs to the technical field of adhesive tapes. The acrylic acid glasses edge sealing adhesive tape sequentially comprises a base material layer and an acrylic acid adhesive layer from bottom to top, the acrylic acid adhesive layer comprises the following raw materials in parts by weight; the adhesive comprises the following components in parts by weight: 100-200 parts of modified acrylic resin, 10-40 parts of tackifying resin, 0.1-2 parts of a curing agent and 50-200 parts of a solvent. The modified acrylic resin is obtained by grafting a hydrophobic monomer to acrylic resin; the Tg of main chain acrylic resin of the modified acrylic resin is-60 DEG C to-30 DEG C, and the weight-average molecular weight of the main chain acrylic resin is 30-60 W; the molecular weight of a grafted side chain of the modified acrylic resin is 0.5-5W. According to the present invention, the easily-crystallized hydrophobic side chain is grafted on the conventional acrylic resin, and the crystallization performance of the resin is significantly improved by using the crystallization effect of the long alkyl chain so as to enhance the water vapor barrier property;

The application discloses a UV and moisture dual-cured high-temperature-resistant hot-melt acrylate pressure-sensitive adhesive tape and a preparation process thereof, and belongs to the technical field of high polymer materials. The pressure-sensitive adhesive tape comprises a base material and an adhesive layer. Raw materials of the adhesive layer comprise acrylate prepolymer containing a side chain containing a vinyl ether group, modified terpene resin containing a phenolic hydroxyl group, alicyclic epoxy functional silane, a cationic photoinitiator and an antioxidant. By controlling the molar ratio of the phenolic hydroxyl group and the vinyl ether, the tackifying resin is chemically grafted into the polymer network by using the cationic chain transfer reaction, and the double mechanism of the light-induced cationic polymerization and the acid-catalyzed moisture curing is combined, so that the problems of poor temperature resistance and oxygen inhibition of the traditional hot-melt adhesive are solved. The tape has excellent high-temperature shear resistance, high initial adhesion and deep curing characteristics, and the preparation process has good hot-melt processing stability.

This utility model relates to a therapeutic patch for liver, gallbladder, pancreas, and spleen care, belonging to the technical field of therapeutic patches. Its key technical features include: a temperature control structure and a patch body. The temperature control structure is movably positioned on top of the patch body. The patch body includes a substrate layer and a drug-releasing layer. The temperature control structure is located on top of the substrate layer, and the drug-releasing layer is located at the bottom of the substrate layer. Several drug placement slots are pressed onto the sidewall of the drug-releasing layer away from the substrate layer. The temperature control structure includes a piece of absorbent cotton cloth and Velcro. The Velcro is located on the back of the absorbent cotton cloth and adhered to the top of the substrate layer. A heating pad is placed between the absorbent cotton cloth and the substrate layer. The outer surface of the drug-releasing layer is coated with acrylic adhesive. The drug placement slots are arranged in a rectangular array. This utility model has a simple structure, is easy to use, and has good heat therapy and drug-releasing function. It can be used for local treatment of the liver, gallbladder, pancreas, and spleen areas, and has high comfort and clinical applicability.

Embodiments of a tourniquet are provided. The tourniquet comprises an elastic layer, an adhesive layer on a first side of the elastic layer and a release layer on a second, opposite side of the elastic layer. In some embodiments, the adhesive layer comprises an antimicrobial agent incorporated into an acrylic adhesive that does not interfere with the function of adhesively securing layers of the tourniquet under tension to their underlying layers. This arrangement is highly beneficial, as the antimicrobial present in the acrylic adhesive portion of the tourniquet will be placed in contact with any underlying wounds, thereby reducing the risk of infection for traumatic injury victims.

The invention discloses a high-temperature oil resistant acrylic adhesive and a preparation method thereof, and belongs to the technical field of polymer adhesives. The preparation method comprises the following steps: adding a hard monomer, a soft monomer, a functional monomer, a photoinitiator and a chain transfer agent into an organic solvent, introducing nitrogen, uniformly stirring, and reacting under UV illumination to obtain a UV copolymer, the conversion rate of the UV copolymer is 5-20%, and the molecular weight range is 6000-30w; the preparation method comprises the following steps: adding the UV copolymer, the soft monomer, the functional monomer and the chain transfer agent into the organic solvent, heating, reacting, preserving heat, adding the thermal initiator, preserving heat, cooling and discharging to obtain the adhesive. According to the invention, the UV polymer and the solution are polymerized and reacted together, so that the compatibility of the glue and a polymer with certain regularity is improved, the conversion rate of the glue is improved, the oil resistance of the glue is improved through UV polymerization and solution thermal polymerization reaction, and the flexibility and temperature resistance of a glue film are improved.

The utility model relates to the technical field of shielding materials, and discloses a shielding structure, a cable and an electronic product. The shielding structure comprises a polyimide film layer and a conductive cloth layer, the polyimide film layer and the conductive cloth layer are bonded through an acrylic adhesive layer, a conductive adhesive layer is attached to the side, away from the acrylic adhesive layer, of the conductive cloth layer, and the overall thickness T after the polyimide film layer, the acrylic adhesive layer, the conductive cloth layer and the conductive adhesive layer are attached is smaller than or equal to 0.04 mm. The cable comprises a conductive wire and a shielding structure, and the shielding structure is pasted and coated on the outer side of the conductive wire. The electronic product comprises a first main body and a second main body which are rotationally connected, and the first main body and the second main body are electrically connected through a cable. According to the utility model, the shielding performance, wear resistance and bending durability of the shielding structure are improved, the thickness does not exceed 0.04 mm, the shielding structure can bear 500,000 times of rotating friction without being damaged and layered, and the shielding structure still has high shielding performance and conductivity.

The present disclosure generally relates to a one-component adhesive composition comprising a radically polymerizable component, an impact modifier, an adhesion promoter, a flexibilizer, a cure accelerator, an encapsulated radical-forming compound, and optionally a thixotropic modifier, and to the use of the one-component adhesive composition in bonding substrates to each other.

The present invention provides a sealing strip for a negative pressure wound dressing, the sealing strip comprising in order: a carrier layer having opposite front and back sides; an adhesive layer covering at least a portion of the front side of the carrier layer, and wherein the adhesive layer comprises an acrylic adhesive; and at least one release liner detachably connected to the adhesive layer; wherein the weight of the adhesive layer does not exceed 33 gsm, and wherein the weight of the carrier layer is in the range of 20 gsm to 35 gsm.

An adhesive tape suitable for use within an automotive engine comprises a first layer with a halogen- free composition having a melting point equal to or greater than 100°C and equal to or less than 160°C, a second layer of polyethylene, a third layer with a second halogen-free composition having a melting point equal to or greater than 100°C and equal to or less than 160°C, and a fourth layer of adhesive. The first and second halogen-free compositions may include polypropylene. The polyethylene may be selected from low density polyethylene, linear low density polyethylene, high density polyethylene, or combinations thereof. The adhesive may be an acrylic adhesive. The tape exhibits specific thicknesses for each layer and elongation at break values in both machine and cross directions. At least one surface of the tape undergoes corona surface treatment. The tape may include a primer layer between the third and fourth layers and can be wound about a cylindrical support. The method of forming the tape involves coextruding the first, second, and third layers and applying the adhesive layer.

The invention relates to the technical field of frame sealing adhesive tapes, in particular to a screen frame sealing adhesive tape and a preparation method thereof.The screen frame sealing adhesive tape sequentially comprises a PET release layer, a PU foam layer and a TPU layer, and every two adjacent layers are bonded through a specific acrylic acid adhesive layer. The acrylic acid adhesive layer is formed by compounding methyl methacrylate, triallyl phosphate, 2-ethylhexyl acrylate, methacryloyloxyethyl phosphate, an initiator, dimethyl diethoxy silane, a gradient particle size nano filler, coumarone indene resin, a cross-linking agent, a toughening agent and a solvent. According to the formula, a compact three-dimensional network structure is formed, so that an adhesive layer is endowed with excellent high-temperature cohesion, flexibility and bonding strength, thermal oxidative degradation can be effectively inhibited, invasion of water vapor and dust is blocked, and cracking of the adhesive layer and loosening of parts are avoided. The PU foam provides buffering and damping, the TPU layer improves weather resistance and aging resistance, and the PU foam, the TPU layer and the PU foam synergistically construct a dual-protection system, so that the adhesive tape is still stably bonded at a high temperature for a long time, and the connecting life of a frame of display equipment is prolonged.