176results about How to "Small peeling force" patented technology

The invention discloses a heat-resistant UV visbreaking glue composition and a UV visbreaking protective film prepared with this composition. This composition is made from the following materials according to parts by weight: 1-25% of a polyfunctional oligomer or polyfunctional monomer or its composition, 30-50% of a solvent type high-temperature-resistant polyacrylate pressure-sensitive glue, 0.5-1.5% of a cross-linking agent, 0.3-1.5% of a photo-initiator, and 35-60% of a solvent. The heat-resistant UV visbreaking protective film comprises a base (10), a bottom coating layer (20) applied to the surface of the base (10), a UV visbreaking glue layer (30) applied to the bottom coating layer (20), and a release film (40). The heat-resistant UV visbreaking protective film prepared herein can resist a high temperature of 120 DEG C and has the advantages of high UV pre-illumination release force, low UV post-illumination release force and no glue residue.

The invention provides a heat-resistant UV viscosity breaking film. The heat-resistant UV viscosity breaking film comprises a substrate layer, a UV photosensitive adhesive layer and a release film layer sequentially. The invention further provides a preparation method of the UV photosensitive adhesive layer. The UV photosensitive adhesive layer comprises the ingredients in percentage by weight: 30% to 50% of solvent type high-temperature resistant polyacrylate pressure-sensitive adhesive, 1% to 25% of micromolecular mixed additives, 0.1% to 3% of difunctional or polyfunctional special additive, 0.1% to 1.5% of photoinitiator, 0.5% to 2% of curing agent and 35% to 60% of solvent. The invention further provides a preparation method of the heat-resistant UV viscosity breaking film. According to the heat-resistant UV viscosity breaking film and the preparation method thereof, the sealing performance and high-temperature resistance of a UV photosensitive adhesive to corona PET substrates are improved, base coat treatment technologies are reduced, and the product structure is optimized.

The invention discloses a high-temperature-resistant and low-peel-strength acrylate pressure-sensitive adhesive. The pressure-sensitive adhesive is prepared from raw materials in parts by weight as follows: 50-90 parts of soft acrylate monomers, 5-25 parts of hard acrylate monomers, 0.5-15 parts of reactive functional monomers, 0.2-10 parts of high-temperature-resistant active monomers, 0.2-3 parts of an initiator, 0.5-5 parts of a curing agent and 60-200 parts of a solvent. All the monomers and part of the initiator are dissolved in the solvent firstly, the total concentration of the monomers is controlled to be not lower than 60wt%, and then the material is heated for a reflux reaction for 3-6 h; then the rest of the initiator is dropwise added to reaction liquid, a reaction is carried out for 0.5-2 h after adding dropwise is completed, and then the obtained product is diluted and reacts step by step; and the obtained material and the curing agent are evenly mixed, so that the high-temperature-resistant and low-peel-strength acrylate pressure-sensitive adhesive is obtained. The pressure-sensitive adhesive can still stick a stuck object at the relatively high use temperature, and an adhesive layer is free of residues and traces after being peeled.

An antistatic high-temperature resistant acrylate pressure-sensitive adhesive, and a preparation method and application thereof are disclosed. The pressure-sensitive adhesive includes a component (A)and a component (B). The component (A) is prepared from, by weight, 4-8% of a hard monomer, 18-28% of a soft monomer, 2-8% of a functional monomer, 1-3% of a heat-resistant monomer, 65% of a solvent,and an initiator the weight of which is 0.1-0.5% of the total weight of the hard monomer, the soft monomer, the functional monomer and the heat-resistant monomer. The component (B) includes one or more selected from a curing agent, an auxiliary agent and an antistatic agent. The weight of the curing agent, the weight of the auxiliary agent and the weight of the antistatic agent account for 2-5%, 0.1-1% and 0.1-1% respectively of the total weight of the component (A). The pressure-sensitive adhesive has good heat resistance and good antistatic performance and is free of softening, yellowing andresidual adhesive at high temperature.

The invention discloses a high-temperature-resistant acrylic ester pressure sensitive adhesive. The pressure sensitive adhesive is prepared from raw materials in percentage by weight as follows: 4%-8% of hard monomers, 18%-28% of soft monomers, 2%-8% of functional monomers, 1%-3% of heat-resisting monomers and 65% of a solvent. The pressure sensitive adhesive has higher heat resistance and smaller stripping resistance and does not have residues when cooled to the room temperature after being treated at the high temperature of 180 DEG C, adhesive water does not get yellow under the high temperature condition, and the pressure sensitive adhesive is easy to strip and good in damp heat resistance and well solves the problem of use under high-temperature conditions in all industries. Besides, an actual solution is provided for the fields such as electronic technology, medical treatment, military affairs, aerospace and the like.

The invention discloses a forming window for high-speed continuous photocuring 3D printing. The forming window applied to a photocuring 3D printer comprises a window box and an oxygen supply cooling module. The photocuring 3D printer is divided into an upper cavity and a lower cavity through a middle partition. The window box and the oxygen supply cooling module are arranged in the upper cavity of the case of the photocuring 3D printer. The window box and the oxygen supply cooling module are fixedly mounted on the middle partition in a combined manner. Two ends of an oxygen supply cooling chamber are respectively connected with a cooling gas inlet pipeline and a cooling gas outlet pipeline, and the oxygen supply cooling chamber, the o cooling gas inlet pipeline and the cooling gas outlet pipeline form the oxygen supply cooling module. The forming window has the advantages that low-cost and efficient continuous printing of large-size optional-shape parts can be achieved, the forming window is wide in applicable materials, the precision and quality of the printed parts are high, the printed parts are good in consistency, and process stability and reliability are achieved. In addition, the forming window is high in industrial application value and applicable to a desktop-level 3D printer and industrial 3D printing.

The invention discloses hot stripping pliers for a ribbon fiber. The hot stripping pliers comprise an optical fiber clamp part and a cutting heating part connected through a linear bearing in a sliding manner. The cutting operation adopts a parallel cutting design of an upper blade and a lower blade, and is applicable to fiber stripping operations of a single-core fiber and the ribbon fiber; according to the heating operation, an intelligent heating system is arranged and an optical fiber coating is softened to facilitate the fiber stripping operation of the optical fiber. A design of the linear bearing is adopted, so the release force is small; and the safety and the stability of the operation can be ensured when the optical fiber is drawn to peel off after an optical fiber protecting layer is cut off, and the operation can be finished by one time. The middle heating part adopts a magnet clamping mode so as to facilitate reliable joint of a fiber stripping blade and better strip the coating of the optical fiber. Simultaneously, the skill requirement on an operator is greatly reduced and the popularizing rate of the tool can be greatly improved.

The invention relates to a high-temperature-resistence viscosity-reducing adhesive tape. The high-temperature-resistence viscosity-reducing adhesive tape comprises a base material membrane and high-temperature-resistence viscosity-reducing polyacrylate pressure sensitive adhesive smeared on the base material membrane; and the high-temperature-resistence viscosity-reducing adhesive tape is preparedfrom 100 parts of polyacrylate, 10 to 15 parts of multi-functional acrylate, 0.3 part of cross-linking agent and 0.1 part of initiator; and the multi-functional acrylate is any one of pentaerythritoltriacrylate or pentaerythritol tetraacrylate. The base material membrane is any one of a PET membrane or PI membrane. The polyacrylate comprising the high-temperature-resistence cross-linked functional group in the high-temperature-resistence viscosity-reducing adhesive tape is further cross-linked with the multi-functional acrylate at a high temperature, so that the stripping force is greatly reduced, and the high-temperature prepared adhesive tape is easier to strip; and the high-temperature-resistence viscosity-reducing adhesive tape disclosed by the invention is heated and used for 20 to30 minutes at 120 to 160 DEG C, the stripping force is apparently reduced, the adhesive tape is easier to strip, the adhesive residue risk is reduced, and the production efficiency is improved.

The invention discloses a preparation method of a pressure sensitive adhesive for a polaroid protection film and a protection film thereof. The pressure sensitive adhesive is prepared from the following raw materials in parts by weight: 10 to 40 weight parts of soft monomers, 5 to 15 weight parts of hard monomers, 2 to 6 weight parts of fluorine containing acrylate monomers, 0.8 to 3 weight partsof crosslinking monomers, 0.8 to 2 weight parts of vinylsilane, 0.5 to 2 weight parts of anti-static agents, 0.5 to 1.5 weight parts of initiators and 80 to 190 weight parts of solvents. The pressuresensitive adhesive can be directly covered on the surface of a polyester film; the additional addition of the curing agents and the anti-static agents is not needed; the adhesive layer resistance is 1010 ohm or less; the anti-static performance is realized. When the polaroid protection film adhesive layer is pasted on the surface of a polaroid, after the high-temperature and high-humidity tests for 500h, the protection film and the polaroid are tightly attached; no bubble bulges exist; no adhesive is remained when the protection film is torn away; defects such as hard shadow do not exist.

The invention discloses a washable hot melt adhesive and application thereof. The hot melt adhesive is composed of the following raw materials by mass percentage: 30-80% of high-acid value resin; 0-40% of a plasticizer; 10-40% of a thermoplastic high polymer; and 0-1% of an antioxidant. The hot melt adhesive provided by the invention selects high-acid value resin as the tackifier, which contains carboxyl or hydroxyl and other hydrophilic functional groups, and can rapidly react with alkaline water so as to destroy the structure of the hot melt adhesive and lower the stripping force of the hot melt adhesive. The hot melt adhesive is partially dissolved and dispersed into small solid particles so as to completely break away from an adherend, thus being easily removed from the surfaces of PET, PP, PE, glass, ceramics, metals, leather, wood, paper products, plastic products, textile products or others. The washable hot melt adhesive provided by the invention has the bonding performance of conventional hot melt adhesives, and has the advantages of strong initial adhesion, environmental protection and safety, the preparation process is simple, the requirements for the process and equipment are low, the production efficiency is high, and the production cost is low.

The invention discloses a polybutadiene rubber modified waterborne polyurethane adhesive and a preparation method thereof, which belong to the field of waterborne polyurethane adhesives and are used for solving the problems that an existing polybutadiene rubber modified waterborne polyurethane adhesive is high in thermal activation temperature, low in solid content and poor in primary viscosity and peeling strength. In order to solve the problems, the adhesive disclosed by the invention comprises the following components in parts by weight: 75-100 parts of polybutadiene rubber modified waterborne polyurethane, 3-5 parts of white carbon black, 0.2-0.5 part of 3-amino propyl triethoxysilane, 0.15-0.3 part of waterborne thickening agent, 8-15 parts of plasticizer and 3-7 parts of waterborne curing agent. The invention further provides a preparation method of the polybutadiene rubber modified waterborne polyurethane adhesive. After the adhesive disclosed by the invention is adhered with a sample and impacted for 5 cycles at a high-low temperature between -65 DEG C and 120 DEG C, the peeling strength is reduced by not more than 5%, the elongation at break is as high as 380%-510%, and the tensile strength is as high as 2.8 MPa-4.2MPa.

The invention discloses lower exposure type ceramic photocuring 3D printing equipment and a manufacturing method thereof. The lower exposure type ceramic photocuring 3D printing equipment comprises a machine table, a stripping mechanism, a precipitating preventing mechanism, a trough, a printing platform located over the trough, a lifting mechanism driving the printing platform to ascend and descend relative to the trough, and a projector located on the corresponding lower portion of the trough. The stripping mechanism comprises a pivot swing table and a pivot swing driver, the pivot swing table is pivoted on the machine table around a horizontally arranged pivotal shaft, and the pivot swing driver drives the pivot swing table to vertically pivotally swing around the pivotal shaft. The pivot swing driver is mounted on the machine table, and the trough is mounted on the pivot swing table. The precipitating preventing mechanism comprises a circulating pump, a recycling hose and an output hose. The recycling hose is connected between an inlet of the circulating pump and the trough, and the output hose is connected between an outlet of the circulating pump and the trough. The circulating pump is mounted on the machine table and drives photocuring liquid in the trough to circulate. A three-dimensional model and the trough can be separated more easily, and the situation that the photocuring liquid precipitates, and consequently the forming reliability of the three-dimensional model is influenced is avoided.

The invention discloses a stripping-force-controllable pressure-sensitive adhesive, which is characterized by being prepared from the following raw materials in percentage by weight: 4 to 8 percent of hard monomer, 26 to 34 percent of soft monomer, 2 to 6 percent of functional monomer and 60 percent of solvent. The pressure-sensitive adhesive is controllable in stripping force and wide in adaptive range; the 180-degree stripping force is 5g to 260g per 25mm; further, the stripping force is changed little along with temperature; glue is low in viscosity and further stable; the pressure-sensitive adhesive is good in humidity and heat resistance, has no residual adhesive, has no fogginess, and has favorable environmental resistance performance; a preparation method of the pressure-sensitive adhesive is simple and effective; the pressure-sensitive adhesive is low in cost, and can be widely applied to an electronic product, a building material product, a furniture product and the like.

The invention discloses a making method for an anti-fake soundless adhesive tape. Specifically, the technological steps include: 1. conducting corona treatment on the front surface and back surface of a BOPP film by a corona machine; 2. printing ink on the front surface of the corona treated BOPP film by a printing roller with printing tension of 15-25kgf; 3. coating the back surface of the ink printed BOPP film with a light release force release agent through an anilox roller with coating tension of 20-25kgf, then coating the ink layer on the BOPP film front surface with a LOGO release agent through a LOGO sign printing roller; and 4. coating the LOGO release agent layer on the front surface of the release agent treated BOPP film with a water-based acrylic glue through a gumming roller with coating tension of 20-30kgf, and adjusting the gumming thickness to 20 micrometers by a winding bar under the assistance of a press roller.

The invention provides a method for manufacturing a flexible substrate. The method includes that a bearing substrate is provided; a photosensitive adhesive layer is formed on the bearing substrate; a flexible substrate is arranged on the photosensitive adhesive layer, the flexible substrate includes an active area and an inactive area; the photosensitive adhesive layer comprises a first area and a second area, the photosensitive adhesive in the first area in the photosensitive adhesive layer is light-cured and the photosensitive adhesive in the second area remains uncured; a component is formed on the flexible substrate, the orthographic projection of the inactive area of the flexible substrate on the bearing substrate covers the orthographic projection of the first area of the photosensitive adhesive layer on the bearing substrate, the orthogonal projection of the second area of the photosensitive adhesive layer on the bearing substrate covers the orthogonal projection of the active area of the flexible substrate on the bearing substrate; the bearing substrate is cut along the boundary between the inactive area and the active area such that the inactive area and the active area are separated; and the bearing substrate in the active area is separated from the flexible substrate. The method can effectively reduce the peel strength between the flexible substrate and the bearing substrate.

The invention discloses a preparation method of a lithium battery negative pole material. The preparation method comprises the following steps: 1) preparing graphene nanoplatelets: stirring and mixing H2SO4 and (NH4)2S2O8, adding graphite powder after (NH4)2S2O8 is dissolved, further stirring, dropwisely adding H2O2, standing to obtain expanded graphene aggregate, washing with water to neutral, and drying; and adding the dried graphene aggregate into an N-methylpyrrolidone solution, pulverizing to obtain a graphene solution, centrifuging, washing with water, and freeze-drying to obtain graphene nanoplatelet powder; and 2) adding the graphene nanoplatelet powder prepared in the step 1) together with nano silicon powder, polyacrylonitrile and artificial graphite into a container containing dimethylformamide, performing ultrasonic dispersion, freeze-drying to obtain a graphene/nano silicon powder/polyacrylonitrile/artificial graphite mixture, calcining the mixture to obtain a graphene/nano silicon powder/cyclized polyacrylonitrile/artificial graphite compound, and crushing the compound to obtain the graphene/nano silicon powder/cyclized polyacrylonitrile/artificial graphite mixed negative pole material.

The invention relates to a holographic anti-counterfeit alumite material used in the printing industry, especially to a laser alumite stamping foil with controllable peel strength and a preparation method thereof. The invention provides the laser alumite stamping foil with the advantages of capacity of bearing alumite laser anti-counterfeit information, adjustable peel strength of a coating, high resistance to heat, wear, weather and scratches and suitability for a subsequent procedure of single-plate/seamless molding and the preparation method thereof. The laser alumite stamping foil comprises, by mass, 10 to 15 parts of a thermoplastic hard acrylic resin, 3 to 6 parts of a thermoplastic soft acrylic resin, 1 to 11 parts of cellulose ester, 80 to 95 parts of a solvent and 0.1 to 0.2 part of an auxiliary agent. The laser alumite stamping foil can be directly fed into a machine for coating, thereby realizing energy saving and emission reduction to be realized; the peel strength of the coating is adjusted through changing of the addition amount of cellulose ester, the peel strength is reduced when the usage amount of cellulose ester is increased, and the peel strength is allowed to change in a range of 2 to 15 KN/m; the laser electrochemical aluminum stamping foil can meet requirements on peel strength by different hot stamping substrates and different hot stamping processes and has a wide application scope.

The invention provides a multifunctional packaging adhesive film and a preparation method thereof. The multifunctional packaging adhesive film comprises, by mass, 90 to 99% of a polymer and 1 to 10% of an auxiliary agent, and the auxiliary agent comprises a silane oligomer. The prepared multifunctional packaging adhesive film has excellent peeling force attenuation resistance and PID resistance, and can meet the requirements of packaging adhesive films with different functions.

The present invention provides a release film excellent in peelability. The release film has a small peeling force, which is not liable to increase with a lapse of time even in a state that the release film adheres to an adhesive layer; the transfer of a silicone component to the adhesive layer is less, and the adhesive force of the adhesive layer to which the film adheres is not reduced. The release film excellent in peelability is characterized in that a release agent layer (4) having a thickness of 0.4 to 2 [mu]m and containing a silicone-based release agent is provided on one surface of a base film (1), and an adhesive resin layer (2) containing inorganic fine particles and/or polymer particles as fine particles (3) are arranged on the other surface of the base film; the fine particles (3), the adhesive resin layer (2) and the release agent layer (4) satisfy the following conditions (1) and (2): (1) the volume reference average particle size of the fine particles (3) is more than twice the thickness of the release agent layer (4); (2) the thickness of the adhesive resin layer (2) is in the range of 25 to 60% of the volume reference average particle size of the fine particles (3).

The invention relates to a visbreaking adhesive tape, in particular to an adhesive composition, an adhesion-reducing adhesive tape applied to optical filter cutting and a preparation method of the adhesion-reducing adhesive tape. In order to solve the problem that an existing adhesion-reducing adhesive tape is not easy to peel off after an optical filter is cut, the invention provides an adhesivecomposition and an adhesion-reducing adhesive tape applied to optical filter cutting. The adhesive composition comprises 100 parts by mass of a (meth) acrylate copolymer, 30 parts by mass of urethaneacrylate oligomer containing 10 unsaturated double-bond functional groups, 5.0-10.0 parts of polyfunctional acrylate monomer containing 6 unsaturated double-bond functional groups, 1.5 parts of a curing agent and 1.5 parts of a photoinitiator. The adhesive composition forms an adhesive layer after being cured, the prepared adhesion-reducing adhesive tape is subjected to UV dispergation after an optical filter is cut, the stripping force is low after UV dispergation, the adhesion-reducing adhesive tape is easily separated from the optical filter, and the problem that an existing adhesion-reducing adhesive tape is not easy to peel off after an optical filter is cut is solved.

The invention provides electrochemical aluminum foil suitable for high-temperature and high-speed hot stamping. The electrochemical aluminum foil comprises a carrier film, a release layer, an imaginglayer, an aluminized layer and a rubber layer. The imaging layer comprises melamine acrylice resin, butanone, butyl ester, colourment and alkyd resin, the imaging layer is printed through a plate roller with 200 meshes, and the dry coating quantity is (1.00+-0.05) g/m<2>. The rubber layer comprises nitrile butadiene rubber modified phenolic resin, modified polyurethane resin, modified vinyl acid resin, ethyl ester, methylbenzene and silicon dioxide, the rubber layer is printed through a plate roller with the 180 meshes, and the dry coating quantity is (1.15+-0.05) g/m<2>. The hot stamping adhesive force of the electrochemical aluminum foil is strong, stripping force is smaller than 3 g/inch, the hot stamping speed is 100 m/min or above, the stamping suitability, temperature resistance, rubber aluminum firmness and color aluminum firmness are all good, and the electrochemical aluminum foil is specially suitable for the high-temperature and high-speed circular-pressing and circular-stamping technique.

The invention discloses a high-temperature-resistant modified acrylate pressure-sensitive adhesive and a preparation method thereof, wherein the high-temperature-resistant modified acrylate pressure-sensitive adhesive comprises, by weight, 75-93 parts of a soft monomer, 3-8 parts of a hard monomer, 3-8 parts of a functional monomer, 2-10 parts of an organic boric acid modified monomer, 0.1-0.4 part of an initiator and 100-200 parts of a solvent. The invention further provides a preparation method of the high-temperature-resistant modified acrylate pressure-sensitive adhesive. According to theinvention, the preparation raw materials are easy to obtain, the production efficiency is high, the pressure-sensitive adhesive can be rapidly prepared, and the problems that the production cost is high, the operation is difficult and not easy to control, and the high-temperature stripping force of the pressure-sensitive adhesive is increased are effectively solved.