492 results about "Acrylic adhesive" patented technology

The application provides a kind of fast curing acrylic glue and application, the fast curing acrylic glue is prepared from the following components according to weight parts: butyl nitrile rubber of terminal methacrylate is 13-17 parts;Polyurethane acrylate is 5-8 parts;Monofunctional acrylate monomer is 14-20 parts;Two functionality acrylate monomer is 7-13 parts;Three functionality acrylate monomer is 1-3 parts;Peroxide is 0.5-1.5 parts;Polymerization inhibitor is 0.01-0.04 parts;Coupling agent is 0.5-0.7 parts.The acrylic glue provided by the application has the advantages of fast curing, low volume resistivity after adding silver powder curing, good bonding strength, moderate elastic modulus, and can be used for photovoltaic tile conductive silver glue.

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

The invention discloses high-flexibility low-reflection flexible photovoltaic glass and a preparation method thereof, and belongs to the technical field of photovoltaic glass preparation. The preparation method comprises the following steps: carrying out cleaning and plasma activation treatment on a flexible glass substrate in an argon atmosphere at the power of 100W for 5 minutes; spin-coating a perovskite precursor solution and annealing to form an active layer, and depositing a transparent conductive layer and a back electrode; carrying out vacuum lamination packaging by adopting an EVA material; coating an acrylic acid adhesive transition layer; spin-coating ultraviolet cured SiO2 sol to form an inorganic coating; a PVDF / Ag / PVDF sandwich structure is constructed, the coverage rate of the nano-silver is 40-50%, and the PVDF layer contains 0.5% of antioxidant. After the flexible photovoltaic glass is circularly bent for 1000 times under the curvature radius of 5mm, the recovery rate is greater than 95%, the PAR transmittance is greater than 92.5%, the NIR reflectivity is greater than 89.3%, the reflectivity retention rate is greater than 96% after the flexible photovoltaic glass is aged for 100 hours at 85 DEG C / 85% RH, and the flexible photovoltaic glass has excellent flexibility, optical performance and environmental stability.

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.

To provide an acrylic adhesive composition containing a polytetramethylene glycol-based urethane (meth)acrylate compound as an essential component, which has low viscosity and excellent workability, and exhibits high peeling strength and shear strength.SOLUTION: An acrylic adhesive composition contains: (A) a polytetramethylene glycol-based urethane (meth)acrylate compound having a (meth)acrylate group at a terminal, which is obtained by reacting (a) a polyol compound and (b) a polyisocyanate compound in a molar ratio of the component (b) to the component (a) of 0 to 0.5 with (c) a terminated (meth)acrylating agent; (B) a polymerizable vinyl monomer; (c) an organic peroxide; and (D) a reducing agent, as essential components.SELECTED DRAWING: None

The invention relates to a method for manufacturing a paper label (2) comprising a face (1) and a pressure sensitive adhesive layer (4) for adhering the paper label (2) to a surface of an item to be labelled, wherein the face (1) comprises a paper, wherein the method comprises: applying an acrylic adhesive onto a surface, wherein the acrylic adhesive comprises a wash-off additive, the wash-off additive comprising a resinous material and a grafted rosin ester which is a rosin ester grafted with a capped polyalkylene glycol, and drying the acrylic adhesive in order to form an acrylic pressure sensitive adhesive onto the surface, thereby obtaining the paper label The invention relates to a use of a wash-off additive for an acrylic pressure sensitive adhesive of a direct thermal wash-off paper label. The invention further relates to a paper label (2).

An adaptable handle and mount provided for the use with tools needing the assist of a handle. Handle is used in a horizontal fashion and offers the user a no grip solution. The handle comprises a palm rest that is intended to be positioned in your palm, having additional features for comfort. The handle also includes a hand strap that is fastened to the palm rest, its function is to secure the handle assembly firmly to the hand. Also consists of a connection point for attaching handle to the tool with a threaded bolt, nut, and push-on bolt retainer used for Anti-rotation and handle to tool alignment. Further comprised of a mount consisting of an aluminum block with female threads sized and shaped to allow for sufficient adhesion of a high bond, double sided, acrylic adhesive tape to accommodate original tools design.

The invention belongs to the technical field of textile dyeing and finishing processes, and particularly relates to a dyeing and finishing liquid for reducing the hair removal rate index of home textile sanded fabric and a printing and dyeing process. According to the dyeing and finishing liquid, the acrylic acid adhesive, the hydrophilic softening agent and the neutralizing acid are used in a compatible manner, so that the purpose of reducing the hair removal rate of the home textile sanded fabric is achieved. According to the process disclosed by the invention, an acrylic acid adhesive and a hydrophilic softening agent used in a pigment printing link are added in the after-finishing, and through roll padding, the linting rate of the front and back surfaces of various brushed fabrics can be effectively reduced. The fabric obtained through the printing and dyeing process is soft and smooth in hand feeling and high in cost performance; various fastnesses such as wet rubbing, dry rubbing, washing fastness and dry cleaning fastness are excellent; the compatibility is good, roller sticking is avoided, and the roller is easy to clean; color spots are not easy to generate; the stability is good, and the front-back consistency is good.

Provided is an adhesive sheet equipped with an adhesive layer, where the adhesive layer includes an acrylic adhesive polymer and a modified polymer that is at least one selected from the group consisting of modified polyolefins and modified polydienes, and the acrylic adhesive polymer and the modified polymer undergo phase separation in the surface layer portion of the adhesive layer to form an adhesive sheet. Also provided is an adhesive composition that contains an acrylic adhesive polymer and a modified polymer, where phase separation of the acrylic adhesive polymer and modified polymer occurs in the process of forming an adhesive layer on a base material by applying the adhesive composition to a base material and removing the solvent.

The preparation method comprises the following steps: weighing the following raw materials in parts by weight: 18-25 parts of methyl methacrylate, 25-30 parts of n-butyl acrylate, 30-35 parts of 2-ethylhexyl acrylate, 10-15 parts of acrylic acid, 8-10 parts of a reinforcing additive, 1-2 parts of benzoin diethyl ether and 15-20 parts of propylene glycol methyl ether acetate, and uniformly mixing the raw materials, the UV-cured acrylic adhesive tape is prepared by coating an adhesive tape base material with a modified reinforcing agent, then carrying out ultraviolet irradiation treatment, rolling and storing in a dark place, and the modified reinforcing agent contains double bonds and triple bonds in the ultraviolet irradiation process and can be cross-linked with other monomers to increase cross-linking points, so that the rigidity and heat resistance of polyacrylic acid are improved; the modified reinforcer contains a polyhedral oligomeric silsesquioxane structure, a benzene ring and a cyclodextrin structure, and the cyclodextrin structure can interact with a polymer chain to increase the mobility of the polymer chain, so that the flexibility and impact resistance of the material are improved.

The invention relates to the technical field of textiles, in particular to high-breathability antibacterial lining cloth and a preparation method thereof. The preparation method comprises the following steps: adding ethyl methacrylate, hydroxyethyl acrylate, modified chitosan, modified silver-loaded titanium dioxide, modified lignin and a lauryl sodium sulfate solution to obtain a pre-emulsion; and adding a lauryl sodium sulfate solution, a sodium bicarbonate solution and an ammonium persulfate solution into the pre-emulsion to obtain the acrylic acid adhesive. The high-breathability polyester fabric is soaked in the acrylic acid adhesive for 1-2 min, roll compacting and baking are conducted after soaking is completed, and the high-breathability antibacterial lining cloth is obtained. The high-breathability antibacterial lining cloth prepared by the preparation method has excellent antibacterial performance and ultraviolet resistance, so that the high-breathability antibacterial lining cloth has a wide application prospect in the technical field of textiles.

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 discloses an ostomy base plate and an ostomy bag assembly. The stoma base plate and the stoma bag are used in a matched mode, the stoma base plate comprises a first adhesive area and a second adhesive area which are concentrically arranged, at least part of the first adhesive area is arranged on the peripheral side of the second adhesive area in a surrounding mode, the first adhesive area is made of medical hydrocolloid or medical acrylic acid adhesive, and the second adhesive area is made of medical hydrocolloid or medical acrylic acid adhesive. And the second adhesive area is made of medical silica gel. According to the technical scheme provided by the utility model, the peripheral hydrocolloid material can ensure that the stoma base plate has enough adhesive force, so that the stoma bag and excrement contained in the stoma bag can be suspended and borne; the inner ring silicone adhesive material has enough viscosity to seal the periphery of the stoma, but the inner ring silicone adhesive material has relatively weak viscosity, is easy to tear off and does not strain the skin, and the silicone adhesive is extremely low in allergy rate and small in damage to the skin. According to the scheme, under the condition that it is guaranteed that the stoma base plate is safe and free of leakage, the skin of a patient is better protected, and the use experience is improved.

This invention relates to a method for manufacturing a direct thermal linerless label web (100) comprising a face (110) and a water-based acrylic pressure sensitive adhesive coating (120), wherein the face (110) comprises a base layer (113) and a direct thermal printable coating (115), and wherein the method comprises: supplying the face (110), applying a water-based acrylic adhesive coating (121) comprising free and / or non-free surfactant(s), wherein a total amount of the surfactant(s), excluding surface active polymerization agent(s), is from 0 wt. % to less than 0.6 wt. %, calculated from the total dry weight of the water-based acrylic adhesive coating, and thermally drying the water-based acrylic adhesive coating (121) into the water-based acrylic pressure sensitive adhesive coating (120). This invention further relates to a direct thermal linerless label web, and a use of a direct thermal linerless label (100) in on-demand printing.

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.

This invention provides a high-strength, impact-resistant acrylic adhesive. Using an independent synthesis method, an acrylate-modified rubber elastomer with carboxyl groups is prepared. This elastomer can be chemically bonded to an acrylic polymer. The resulting hydroxyl groups can further react with an isocyanate curing agent. Adhesion is enhanced by using an acrylic phosphate adhesion promoter and a multifunctional acrylate monomer to increase crosslinking density, enabling the foam tape prepared with this acrylic adhesive to maintain high bonding strength even at high temperatures. The foam tape prepared with this high-strength, impact-resistant acrylic adhesive exhibits a 180° peel strength of greater than 3200 gf / in at room temperature and greater than 800 gf / in at 85°C. It also exhibits a drop impact energy of greater than 0.65 J and a DuPont impact energy of greater than 0.90 J.

This adhesive comprises: a matrix adhesive including an acrylic adhesive as a main component; and thermally expandable fine particles which expand when heated, wherein the volume of the thermally expandable fine particles becomes 10 times or more of the original volume thereof after expansion. The matrix adhesive forms a phase structure during curing. The phase structure has: an acrylic hard phase formed by an acrylic component in the matrix adhesive; and an elastomer phase formed by an elastomer included in the matrix adhesive. The elastomer phase has: a granular elastomer phase obtained by a granular elastomer having a double bond portion; and a non-granular elastomer phase formed by a liquid elastomer.

The invention discloses a double-core water-blocking weather-proof photovoltaic direct-current cable and a preparation method thereof, and the cable comprises two cable bodies, and is characterized in that each cable body is provided with a tinned conductor, water-blocking glue, an insulating layer, a water-blocking tape and a sheath layer from inside to outside in sequence; a connecting rib is fixedly arranged between the two sheath layers; the water-blocking tape is arranged outside the insulating layer in a double-layer wrapping mode, and the double-layer water-blocking tape is composed of a PET base material and acrylic acid glue. The insulating layer is arranged in a double-layer mode, the inner layer is XLPE added with 3% of nanometer aluminum hydroxide, the outer layer is XLPE added with 5% of nanometer carbon black, the space between the tinned conductor and the insulating layer is coated with hot-melt water-blocking glue for longitudinal water blocking, the space between the tinned conductor and the insulating layer is provided with a double-layer water-blocking tape for radial water blocking, the water-blocking performance of the cable is effectively improved, the inner layer of the insulating layer is XLPE added with 3% of nanometer aluminum hydroxide, and therefore the water-blocking performance of the cable is effectively improved. And the outer layer is made of anti-ultraviolet and water-resistance XLPE added with 5% of nano carbon black, so that the water resistance and the anti-ultraviolet performance of the cable are improved.

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.

A biodegradable adhesive tape, a biodegradable adhesive composition, and a production method for the biodegradable adhesive tape. The biodegradable adhesive tape comprises: the biodegradable adhesive composition, comprising an acrylic acid adhesive and a polyurethane dispersant, wherein the ratio of the dry weight of the polyurethane dispersant to the wet weight of the biodegradable adhesive composition is at least 8% or above, and the ratio of the dry weight of the polyurethane dispersant to the dry weight of the acrylic acid adhesive is not more than 40%; and a biodegradable backing film. The compostable degradation rate of the biodegradable adhesive tape tested according to GB / T 19277.1 is at least greater than or equal to 90% in 180 days. The adhesive tape and the adhesive composition have the advantages that the raw materials are easy to obtain, the preparation is simple and convenient, and a good adhesion effect and a biodegradation effect are both achieved.

The invention discloses a method for preparing a supercritical modified boron nitride nanotube thermal conductive filler, comprising the steps of: adding the hydrolyzed silane coupling agent together with the boron nitride nanotubes to a supercritical reactor for supercritical reaction, protecting the reaction process with carbon dioxide gas, and quickly restoring the normal pressure after the reaction to obtain a supercritical modified boron nitride nanotube; adding the supercritical modified boron nitride nanotube thermal conductive filler to an acrylic resin solution and stirring to obtain a mixed solution; placing the mixed solution in a supercritical reactor for supercritical reaction, protecting the reaction process with carbon dioxide gas, and obtaining a supercritical modified boron nitride nanotube thermal conductive filler by the reaction. The adhesive disclosed by the invention is prepared by mixing the supercritical modified boron nitride nanotube thermal conductive filler into an acrylic adhesive and stirring. The invention can improve the dispersibility and grafting rate of the boron nitride nanotube thermal conductive filler, facilitate dispersion in the adhesive, and improve the thermal conductivity of the adhesive.

The invention relates to the technical field of semiconductor manufacturing, in particular to a high-yield and crack-free temporary bonding method for laser lift-off of a Mini / MicroLED COW whole-surface chip structure. According to the method, a composite membrane material composed of double-sided acrylic UV viscosity-reducing glue and a PET rigid base material is adopted. And high pressure is applied in a vacuum environment to complete bonding of the temporary substrate and the COW, so that large-area and high-density embedding of the acrylic acid adhesive layer and the surface structure of the chip is realized. And carrying out UV exposure to promote the phase change of the acrylic adhesive layer, and curing the acrylic adhesive layer from an initial soft viscoelastic state to a high-modulus hard acrylic support structure. The hard supporting surface and the vacuum embedded structure act together, so that excellent internal stress resistance is provided, and cracks in laser lift-off and subsequent processes are effectively prevented. Meanwhile, after the cured structure is subjected to subsequent permanent bonding, the visbreaking layer can be activated through simple UV irradiation, and residue-free and easy-to-separate de-bonding of the temporary substrate and the PET film material is realized.

The utility model discloses a high-temperature-resistant stretch-resistant insulating tape which comprises a tape body, and the tape body comprises a base material layer, an acrylic acid adhesive layer, a ceramic fiber coating, a silicone rubber layer, a polyamide coating and a silicone oil release film layer. The acrylic acid adhesive layer is arranged on the bottom surface of the ceramic fiber coating and is used for providing an adhesive property; a corrugated structure is arranged on the acrylic acid adhesive layer; the silicone rubber layer is arranged on the top surface of the base material layer, and the silicone rubber layer is of a latticed structure. The ceramic fiber coating has a higher melting point and a lower thermal expansion coefficient, so that the adhesive tape body has better high-temperature resistance and can be suitable for various high-temperature application scenes; the silicone rubber layer has good elasticity and flexibility, so that the silicone rubber layer can be deformed to a certain degree and cannot be broken when being stretched; meanwhile, the silicon rubber layer is of a latticed structure, and the latticed structure can enable the insulating rubber tape to uniformly distribute stress when the insulating rubber tape is pulled, so that the tensile property is enhanced.

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.

The invention provides a PET enhanced PE foam composite material which comprises a PE foam base material layer, a bonding layer and a PET base material layer, the bonding layer is located between the PE foam base material layer and the PET base material layer, the PE foam base material layer is made of PE foam with the density being 0.05-0.3 g / cm < 3 > and the average cell diameter being 50-200 microns, the bonding layer is made of an acrylate adhesive with the thickness being 0.01-0.05 mm, and the PET base material layer is made of a PET adhesive with the thickness being 0.01-0.05 mm. The PET base material layer adopts a transparent PET film original film with the thickness of 0.01-0.1 mm, the prepared foam composite material has excellent mechanical properties, excellent structural stability and multifunctional integration, the adopted preparation method is simple in process, controllable in operation, clear in parameters of each step and suitable for large-scale industrial production, and by accurately controlling the process parameters, the foam composite material can be used for preparing a foam composite material with good mechanical properties. And the composite material with excellent performance can be stably produced.

To solve a problem on an electronic device manufacturing line in which a conventional broadband flat radio wave absorber is affected by reflection from a coating resin in the millimeter wave band, and external vibration or contact can cause carbon or ferrite powder dust to separate and fall from the radio wave absorber.SOLUTION: One side of a cover layer made of an open-cell foamed resin is impregnated with an adhesive, one side of an absorbing layer made of closed-cell or open-cell foamed resin with carbon powder or ferrite powder dispersed therein is coated with the adhesive, and the adhesive-impregnated side of the cover layer and the adhesive-coated side of the absorbing layer are joined together. The foamed resin of the cover layer and the absorbing layer is polystyrene foam, polyurethane foam, or polyethylene foam, and the adhesive is an acrylic adhesive, silicone adhesive, urethane adhesive, or rubber adhesive.SELECTED DRAWING: Figure 1

The invention provides a multi-layer composite lithium battery wrapping adhesive tape and a preparation method thereof. The wrapping adhesive tape comprises a first base film layer, a first bonding layer, a second base film layer, a second bonding layer and a release layer, the first base film layer is made of first polyester resin and blue color paste; the first bonding layer is made of a quick-curing epoxy adhesive, and the second bonding layer is made of an acrylic adhesive; the quick-curing epoxy adhesive of the first bonding layer is composed of the following components in parts by weight: 20-60 parts of second polyester resin, 1-20 parts of an isocyanate curing agent, 20-40 parts of bisphenol A epoxy resin, 20-50 parts of a flame retardant and 1-5 parts of an auxiliary agent; the acrylic acid adhesive of the second bonding layer is prepared from the following components in parts by weight: 10 to 60 parts of butyl acrylate, 5 to 10 parts of acrylic acid, 10 to 40 parts of hydroxyethyl acrylate, 10 to 30 parts of butyl acetate, 5 to 40 parts of ethyl acrylate and 0.5 to 5 parts of initiator. The wrapping adhesive tape has good flame retardance and high-temperature stability, and solves the problems of combustion and explosion caused by high temperature of the lithium battery.

The utility model discloses a high-temperature, high-viscosity and high-buffering integrated copper foil gel composite material. Comprising a copper foil layer, an acrylic acid adhesive layer arranged on the upper end face of the copper foil layer in a coating mode, a foam layer arranged on the upper end face of the acrylic acid adhesive layer in a bonding mode and a silica gel layer arranged on the upper end face of the foam layer in a coating mode. The high-temperature and high-viscosity acrylic acid adhesive layer is coated on the upper end surface of the silica gel layer; and the release film layer is adhered to the upper end surface of the high-temperature and high-viscosity acrylic acid adhesive layer. The anti-impact and anti-falling adhesive tape has the advantages that the whole adhesive tape can be supported through the copper foil, rapid heat dissipation can be achieved through the copper foil, the foam layer and the silica gel layer are utilized to form the buffer layer, buffer is formed on an attached product, and therefore the good anti-impact and anti-falling effect is achieved; and the high-temperature high-viscosity acrylic acid adhesive layer is used for effectively adhering a product, so that the product can be stably connected under a high-temperature condition.

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 discloses an acrylic adhesive easy to peel after being heated. The acrylic adhesive is prepared from the following raw materials in percentage by weight: 20 to 30 percent of acrylic main monomer, 4 to 6 percent of diene, 0.1 to 0.5 percent of initiator, 51.5 to 67.9 percent of organic solvent and 8 to 12 percent of dienophile, the preparation method of the acrylic adhesive easy to peel off by heating comprises the following steps: (1) adding an acrylic main monomer, a diene body and a solvent into a reaction kettle to obtain a mixed monomer; (2) introducing nitrogen into a reaction kettle to exhaust air, then heating the mixed monomer prepared in the step (1) to 60 DEG C, adding an initiator into the reaction kettle, and simultaneously stirring at a constant speed of 200-300r / min by using a polytetrafluoroethylene stirring paddle to fully react for 4-6 hours to obtain an acrylate copolymer; (3) dissolving the acrylate copolymer prepared in the step (2) in a tetrahydrofuran solution, adding a dienophile, and reacting at 60 DEG C for 2-4 hours to form a covalent cross-linked network; and cooling to room temperature to obtain the polyacrylate adhesive which is easy to peel after being heated.