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Adhesive

An adhesive and adhesive technology, applied in the direction of adhesives, adhesive types, other rubber adhesives, etc., can solve problems such as peeling, and achieve the effect of excellent processability and excellent heat resistance

Inactive Publication Date: 2013-12-18
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem that, when exposed to a high-temperature atmosphere such as a fire, the pressure-sensitive adhesive is peeled off from the adherend due to the decomposition of its polymer components

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0092] Hereinafter, the present invention will be described in more detail by means of examples, but the present invention is not limited to these examples.

[0093] It should be noted that a biaxially stretched polyethylene terephthalate film (trade name: "MRN38", manufactured by Mitsubishi Chemical Polyester Film) having a thickness of 38 μm that had been subjected to silicone-based mold release treatment on one surface ) were used as each separator and cover separator used in each of the following examples.

[0094]

[0095] (Evaluation of Examples 1 to 6 and Comparative Examples 1 to 3)

[0096] Use a 2-kg rubber roller to crimp a sample with a width of 10 mm on a standard stainless steel plate while rolling the roller at a speed of 300 mm / min in a reciprocating manner. After 30 minutes from crimping, the pressure-sensitive adhesive force of the sample was evaluated by stretching in the 180° direction with a tensile tester at 23°C and a pulling rate (peeling rate) of 50...

Synthetic example 1

[0115] (Synthesis example 1) (Preparation of photopolymerizable slurry (A))

[0116] 90 parts by weight of 2-ethylhexyl acrylate and 10 parts by weight of acrylic acid were used as monomer components, 0.05 parts by weight of a photopolymerization initiator (trade name: "IRGACURE651," manufactured by BASF), and 0.05 parts by weight of a photopolymerization initiator (trade name Name: "IRGACURE 184," manufactured by BASF) was stirred in a four-necked separable flask equipped with a stirrer, a thermometer, a nitrogen gas introduction tube, and a cooling tube until the mixture became uniform. Afterwards, bubbling with nitrogen gas was performed for 1 hour to remove dissolved oxygen. Afterwards, UV light was applied from the outside of the flask by using a black light lamp to perform polymerization. At the point when moderate viscosity was obtained, the lights were turned off and nitrogen sparging was stopped. Thus, a partially polymerized photopolymerizable syrup (A) having a po...

Embodiment 1

[0118] 0.1 parts by weight of 1,6-hexanediol diacrylate (HDDA) and 50 parts by weight of phosphoric acid-based glass frit (manufactured by TAKARA STANDARD CO., LTD., VY0144, deformation point: 397° C., average particle diameter: 10 μm) was added to 100 parts by weight of the photopolymerizable slurry (A) obtained in Synthesis Example 1, and uniformly dispersed therein with a disperser. The resulting dispersion was applied to the release-treated side of the separator so as to have a thickness of 50 μm. A cover release film was attached thereto, and the resultant was exposed to UV light (illuminance: 5 mW / cm2) by using a black light as a light source. 2 ) for 5 minutes to cure the applied coating. Thus, a sheet-shaped pressure-sensitive adhesive adhesive (1) having a thickness of 50 μm was produced.

[0119] The obtained pressure-sensitive adhesive adhesive (1) was cut into pieces having a rectangular shape of 40 mm by 40 mm, and evaluated. Table 1 shows the results.

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Abstract

Provided is a pressure-sensitive adhesive, which is capable of fixing adherends to each other instantaneously while also allowing re-positioning of the adherends with respect to each other, has superior processibility such as being capable of being cut into sheets, and does not peel from the adherends even when exposed to high temperature environments such as during a fire. This pressure-sensitive adhesive is tacky before sintering and is adhesive after sintering.

Description

technical field [0001] The present invention relates to a pressure-sensitive adhesive agent convertible into an adhesive agent, and more particularly, to a pressure-sensitive adhesive agent having sinterability, which has pressure-sensitive adhesive properties before sintering , and has adhesiveness after sintering. Background technique [0002] Sinterable adhesives typified by aqueous dispersions of inorganic particles (see, for example, Patent Document 1) do not have pressure-sensitive adhesive properties. Therefore, sinterable adhesives have difficulty in reattaching adherends. In addition, such sinterable adhesives require time or heat treatment until fixation is achieved after application, and thus it is difficult to cut into sheets by punching or the like. [0003] On the other hand, pressure-sensitive adhesives (see, for example, Patent Document 2) have an advantage of instantaneously fixing adherends to each other. However, there is a problem that, when exposed to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J201/00C09J7/00C09J11/04C09J121/00C09J133/04C09J183/04C09J7/10
CPCC09J11/04C09J133/08C09J2421/00C09J2433/00C09J2483/00C09J7/10Y10T428/266Y10T428/268Y10T428/2852C08F222/102
Inventor 杉野裕介长崎国夫土井浩平樋田贵文仲山雄介
Owner NITTO DENKO CORP