14 results about "Peel force" patented technology

Provided is a sheet for an outer package configured to store a power storage element in a power storage device, the sheet for an outer package including a non-porous resin sheet, wherein the sheet for an outer package has a peel force F of 1.5 N / 10 mm or more, which is determined by the following evaluation method. The sheet for an outer package is suitable for the suppression of the swelling of a power storage device.—Evaluation Method— A rectangular test piece measuring 10 mm wide by 100 mm or more long, which is obtained by joining the sheet for an outer package serving as an evaluation object and a polypropylene sheet to each other through hot pressing, is subjected to a tear-off test in which the sheet for an outer package is torn off the polypropylene sheet at a peel rate of 300 mm / min in a 180° direction, and a 180° tear-off peel force thus measured is defined as the peel force F.

This invention provides a method for evaluating the adhesive strength of a center pad, a vulcanizing mold, and a metal sheet with defined holes. The method for evaluating the adhesive strength of the center pad includes: preheating a vulcanizing mold for pre-vulcanized peel test strips and a pressure-holding rubber sheet and a square-shaped pressure-filling mold for final peel test samples; preparing and vulcanizing pre-vulcanized peel test strips; preparing and vulcanizing final peel test samples; and performing peel tests on the final peel test samples to obtain their average peel force. The final peel test sample is formed by the final vulcanization of a preliminary peel test sample. The preliminary peel test sample is formed by sequentially bonding a pre-vulcanized peel test strip after peeling off a high-temperature pad, a metal sheet with defined holes, a center pad strip to be evaluated after peeling off a polyethylene film, and another pre-vulcanized peel test strip after peeling off a high-temperature pad. This method solves the problem of existing technologies lacking effective testing and evaluation methods for the peel strength of center pads.

The invention relates to the technical field of adhesive product production, and discloses a movable adhesive foam production process which comprises the following steps: step 1, pretreating a base material; 2, preparing a glue solution; step 3, a gluing process; step 4, performing segmented drying; step 5, compounding and pressing; step 6, surface texture treatment; the stripping force of the removable glue foam produced through the method is only 0.1-0.3 N / cm, the removable glue foam can be easily torn down manually without the help of tools, and a base material is free of deformation and breakage in the stripping process; after the formula of the adhesive layer is optimized, the cohesive force is moderate, the adhesive layer is completely separated from an adhered object during stripping, no adhesive residue exists, and the cleaning cost is zero; the base material and the adhesive layer are stably combined, the repeated pasting frequency is more than or equal to 5 times, the adhesion performance is not obviously reduced, and the application scene is wide; the production process is simple and can be realized by adopting conventional coating and drying equipment, the production cost is basically equal to that of a traditional process, and industrial popularization is easy.

The present application belongs to the technical field of adhesive tape adhesion detection, and particularly relates to an adhesive tape initial adhesion and peeling force integrated testing device and testing method. The adhesive tape initial adhesion and peeling force integrated testing device comprises a telescopic mechanism, a sliding plate and a tension machine arranged on a base plate. The initial adhesion testing method comprises turning the test plate according to the test angle, and the initial adhesion is tested by the rolling of the ball on the adhesive surface of the adhesive tape on the test plate. The peeling force testing method comprises adjusting the angle of the adhesive tape from 90° to 180° by the two semicircular sliding grooves and the test plate, and the peeling force is tested by the combined movement of the tension machine and the sliding plate. The present application has the advantages of convenient operation, integration of initial adhesion and peeling force testing, expansion of the peeling force testing range and reduction of the testing cost.

The present invention relates to an adhesive sheet having a base layer, an adhesive layer X disposed on one side of the base layer, and an adhesive layer Y disposed on the other side of the base layer, wherein the peeling force when the adhesive layer X is peeled off at 23°C in a 180° direction at a tensile speed of 300 mm / min is A, and the peeling force when the adhesive layer Y is peeled off at 23°C in a 180° direction at a tensile speed of 300 mm / min is B, with A / B = 0.5 to 2, and the peeling force when the adhesive layer X is heated at 80°C for 5 minutes and peeled off at 80°C in a 180° direction at a tensile speed of 300 mm / min is C, and the peeling force when the adhesive layer Y is heated at 80°C for 5 minutes and peeled off at 80°C in a 180° direction at a tensile speed of 300 mm / min is D, with C / D = 0.002 to 0.2.

[Problem] A first purpose of the present invention is to provide a curable organopolysiloxane composition that can provide, to a base material, a release layer that exhibits a low release force when being released from an adhesive layer both at a low speed and a high speed, and that can be favorably released from an adhesive tape with a low release force both during low speed release and high speed release. Further, a second purpose of the present invention is to provide a curable organopolysiloxane composition that can provide a release layer which can be favorably released from an adhesive tape with a low release force both during low speed release and high speed release, and in which the phenomenon of being heavily releasable due to exposure to the atmosphere is favorably suppressed, in other words, which has excellent exposure resistance. [Solution] This curable organopolysiloxane composition comprises the following components (A)-(C). (A) An alkenyl group-containing organopolysiloxane represented by average composition formula (1): 100 parts by mass (in the formula, each R1 independently represents an alkenyl group having 3-20 carbon atoms, R2 represents a linking group which is a divalent hydrocarbon group having 1-10 carbon atoms, and each R3 independently represents a group selected from substituted or unsubstituted monovalent hydrocarbon groups having 1-20 carbon atoms, alkoxy groups having 1-20 carbon atoms, halogenated alkyl groups having 1-10 carbon atoms, organic groups having a hydroxyl group, and organic groups having an acyloxy group, and a, b, c, d, e, f, and g satisfy a≥0, b≥0, c≥0, d≥0, e≥0, f≥0, and g≥0, a+c+e equals 1 or more, and satisfy 2≤a+b+c+d+e+f+g≤15000). (B) An organohydrogen polysiloxane having an average of 2 or more silicon atom-bonded hydrogen atoms (Si-H groups) per molecule: an amount equivalent to 0.5-10 times the mole number of Si-H groups in component (B) with respect to the mole number of alkenyl gr

The present invention relates to an adhesive sheet having a base layer and an adhesive layer disposed on at least one side of the base layer, wherein the peeling force when the adhesive layer is peeled off at 23°C in a 180° direction at a tensile speed of 300 mm / min is A, and the peeling force when the adhesive layer is heated at 80°C for 5 minutes and peeled off at 80°C in a 180° direction at a tensile speed of 300 mm / min is B, and the value calculated by (AB) / A is 90% or more. The adhesive sheet of the present invention has excellent tackiness at room temperature and can be easily peeled off at high temperatures without causing deformation or damage to the adherend.

The present disclosure provides an adhesive composition and a surface protective film including the same, which have low low-speed and high-speed peel forces and a high residual adhesion rate.

A method for disassembling a joint that can also be applied to the disassembly of joints containing components with low hydrophilicity, and simultaneously achieves both joint reliability and ease of disassembly, is provided. The method includes an adhesive sheet having a first adhesive surface and a first component bonded to the first adhesive surface. The method comprises: immersing the joint in a peeling solution primarily composed of a low alcohol having 1 to 5 carbon atoms; and disassembling the joint after immersion. In a peel test conducted using a stainless steel sheet as the adherend, the reduction rate R of the ethanol peel force N1 [N / 20mm] relative to the typical peel force N0 [N / 20mm] at the first measurement of the adhesive sheet is... A The percentage is over 70%, and the average peel force N0 in the second measurement is relative to the average peel force N0 [N / 20mm] in the first measurement. S [N / 20mm] reduction rate R B It is below 30%.

The present application relates to a kind of carbon-coated aluminum foil coating peeling force detection methods based on brightness after adhesive tape pasting and peeling, belong to battery current collector performance detection technical field.The method is by establishing the corresponding relationship curve of brightness value of carbon layer after pasting adhesive tape and peeling and coating peeling force in advance, only needs to measure the brightness of adhesive tape after pasting adhesive tape and peeling of the sample to be measured in subsequent actual detection, accurate measurement of peeling force can be completed by comparing relationship curve, measurement process does not need precision equipment, it is simple and easy to operate, detection speed is fast, result is objective and accurate, and can satisfy the immediate batch sampling demand of industrial field, to realize the efficient and accurate measurement of carbon-coated aluminum foil coating quality.

The present invention addresses the problem of providing a polyolefin film in which zipping and poor adhesion at various operating speeds are suppressed. This problem is solved by a polyolefin film containing a polyolefin resin, wherein the peel force of at least one surface measured by a 180° peel test is 1.00-4.00 N / 25 mm at a peel rate of 300 mm / minute, 1.60-4.00 N / 25 mm at a peel rate of 1000 mm / minute, and 2.30-4.00 N / 25 mm at a peel rate of 2500 mm / minute.

The invention relates to a dry method binder dispersion consistency evaluation method in the technical field of lithium batteries. The method comprises the following steps: S1, carrying out a stripping test on a to-be-tested sample to obtain a stripping force test value ai; the sample to be detected contains a dry method binder; s2, calculating average peel strength according to the peel strength test value ai; S3, calculating a peel strength standard deviation S and a variable coefficient CV, and judging the dispersion uniformity of the adhesive according to the variable coefficient CV. According to the present invention, the peeling strength test is performed on the to-be-tested sample to obtain the peeling strength curve, the variable coefficient CV value of the fluctuating data on the peeling strength curve is calculated, and the smaller the variable coefficient CV value is, the smaller the dispersion degree of the peeling curve is, such that the better the dispersion consistency of the binder is.

This utility model provides a clamping assembly for testing the peel force of optical fiber coatings. It relates to the field of material adhesion testing technology. The clamping assembly includes a single-column tensile testing machine. A lower clamp and an upper clamp are fixedly mounted on the single-column tensile testing machine. A mounting block is fitted onto the lower clamp. Two support frames are fixedly mounted between the inner walls of both sides of the mounting block, and both support frames are in contact with the lower clamp. Two rectangular blocks are fixedly mounted on one side of the mounting block. A threaded sleeve is rotatably mounted between the two rectangular blocks. Two threaded rods are threaded onto the threaded sleeve. Connecting arms are fixedly mounted at the ends of the two threaded rods that are far apart from each other. Adapter blocks are fixedly mounted on the tops of the two connecting arms. This utility model has the advantages of being able to calibrate the center lines of the lower clamp and the upper clamp, reducing coaxiality errors between them, and being quick and convenient to operate.

The application provides a coated diaphragm coating lateral peeling force test method, which tests the sum of the longitudinal peeling force and the lateral peeling force of the coated diaphragm coating and the longitudinal peeling force of the coating, subtracts the longitudinal peeling force from the sum of the lateral peeling force and the longitudinal peeling force, and obtains the lateral peeling force of the coating. The application provides a test method for the lateral peeling force of the coating, which provides technical support for evaluating the powder dropping and cracking of the coating.