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A pressure-sensitive adhesive tape capable of reducing viscosity through thermal expansion and a preparing method thereof

A technology of pressure-sensitive adhesive tapes and pressure-sensitive adhesives, applied in the direction of adhesives, adhesive types, pressure-sensitive films/sheets, etc., can solve the problem of narrow use range of expandable adhesive tapes, and achieve the consistency of curling direction And regularity, the effect of reducing battery space

Inactive Publication Date: 2017-04-19
DONGGUAN AOZON ELECTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] From the point of view of the current expansion adhesive tape technology, the expansion temperature requirement is high, higher than 100 ° C, which is not suitable for some products produced at lower temperatures, and the use range of the expansion adhesive tape is narrow

Method used

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  • A pressure-sensitive adhesive tape capable of reducing viscosity through thermal expansion and a preparing method thereof
  • A pressure-sensitive adhesive tape capable of reducing viscosity through thermal expansion and a preparing method thereof

Examples

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Embodiment 1

[0043] The application of the present invention provides a pressure-sensitive adhesive tape of thermal expansion and loss-of-tack type, which is made of the following components in mass percentage:

[0044] 1) Polyurethane pressure-sensitive adhesive 40.4%;

[0045] 2) Azo compounds 33.5%;

[0046] 3) 1.6% isocyanate curing agent;

[0047] 4) Titanium blue 4.5%;

[0048] 5) Ethyl acetate 20%.

[0049] The base film suitable for the pressure-sensitive adhesive tape has a thickness of 6um, and the base film is polyester or polyurethane pressure-sensitive adhesive with a thickness of 15um.

[0050] Such as figure 1 As shown, the manufacturing method of the heat-expandable and viscous-losing pressure-sensitive adhesive tape described in the application of the present invention sequentially passes through the rubber material configuration area 1, the transfer type blade coater 2, the unwinding area 3 of the film to be coated, and the baking process. Oven area 4, laminating bas...

Embodiment 2

[0059] The application of the present invention provides a pressure-sensitive adhesive tape of thermal expansion and loss-of-tack type, which is made of the following components in mass percentage:

[0060] 1) Epoxy pressure sensitive adhesive 66%;

[0061] 2) 15% benzenesulfonyl hydrazide;

[0062] 3) Amino resin curing agent 1%;

[0063] 4) Titanium dioxide 3%;

[0064] 5) Butyl acetate 15%.

[0065] The base film suitable for the heat-expandable tack-losing pressure-sensitive adhesive tape has a thickness of 36um, and the base film is a polyimide film with a thickness of 50um.

[0066] The manufacturing method of the above-mentioned heat-expandable and viscous-losing pressure-sensitive adhesive tape comprises the following steps:

[0067] A. Mix epoxy pressure-sensitive adhesive, benzenesulfonyl hydrazide, amino resin curing agent, titanium dioxide and butyl acetate according to the above ratio, and stir for 15 minutes at a speed of 1500r / min under a high-speed mixer to...

Embodiment 3

[0074] The application of the present invention provides a pressure-sensitive adhesive tape of thermal expansion and loss-of-tack type, which is made of the following components in mass percentage:

[0075] 1) Polyester pressure-sensitive adhesive 50%;

[0076] 2) Carbonate compound 30%;

[0077] 3) Aziridine curing agent 1%;

[0078] 4) Cobalt green 3%;

[0079] 5) Toluene 16%.

[0080] Further, the applicable base film of the heat-expandable tack-losing pressure-sensitive adhesive tape is a polyolefin film with a thickness of 20 um and a thickness of 30 um.

[0081] The manufacturing method of the above-mentioned heat-expandable and viscous-losing pressure-sensitive adhesive tape comprises the following steps:

[0082] A. Mix polyester pressure-sensitive adhesive, carbonate compound, aziridine curing agent, cobalt green and toluene according to the above ratio, and stir for 30 minutes at a speed of 800r / min under a high-speed mixer to obtain an adhesive;

[0083] B. Set...

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Abstract

A pressure-sensitive adhesive tape capable of reducing viscosity through thermal expansion and a preparing method thereof are provided. The adhesive tape is prepared from 1) 40.4-66% by mass of a pressure-sensitive adhesive, 2) 15.5-33.5% of a thermosensitive expansive type polymer material, 3) 0.8-1.6% of a crosslinking agent, 4) 2.7-4.5% of an inorganic filler and 5) 15-20% of an organic solvent. The adhesive tape has stable viscosity at room temperature, the viscosity is reduced after high-temperature roasting, and the adhesive tape is free of residual adhesive and free of pollution to an adhered object and is convenient to clean. The adhesive tape is prepared through die cutting, and curving direction uniformity and regularity after the adhesive tape is heated and expanded are overcome. The adhesive tape is used for continuous coating of lithium battery cathode and anode slurry, the production efficiency is greatly increased, electric capacity of lithium batteries is greatly increased and battery space is reduced.

Description

technical field [0001] The application of the present invention relates to an adhesive tape, in particular to a pressure-sensitive adhesive tape of thermal expansion and loss of viscosity type and a manufacturing method thereof. Background technique [0002] With the development of science and technology, the degree of automation is getting higher and higher. The continuity and simplification of product production process is the main means to improve the competitiveness of enterprises. At present, high-end electronic products need to carry out electronic products to ensure the continuity and simplicity of production process. Certain protective measures. [0003] At present, the main protective measures are roughly as follows: one is to attach a low-adhesive protective film pressure-sensitive adhesive tape, and the other is to use a UV-type pressure-sensitive adhesive tape. These two protective measures have certain disadvantages. The low-adhesive protective film pressure-se...

Claims

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Application Information

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IPC IPC(8): C09J7/02C09J175/04C09J11/06C09J163/00C09J11/04C09J167/00C08J9/10C08J9/08C08L75/04C08L63/00C08L67/00
CPCC08J9/08C08J9/103C08J9/105C08J2203/02C08J2203/04C08J2363/00C08J2367/00C08J2375/04C08K3/22C08K3/26C08K5/23C08K5/435C08K2003/2241C09J11/04C09J11/06C09J163/00C09J167/00C09J175/04C09J2463/00C09J2467/00C09J2467/006C09J2475/00C09J7/22C09J7/241C09J7/25C09J7/255C09J7/38C09J2301/122C09J2301/302C09J2301/408
Inventor 姚海瑞覃国飞陆金亮王宜金尹嘉菲
Owner DONGGUAN AOZON ELECTRONICS MATERIAL
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