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Preparation method of pressure-sensitive adhesive capable of being solidified by ultraviolet light and pressure-sensitive adhesive tape

A technology of pressure-sensitive tape and ultraviolet light, which is applied in the direction of adhesives, film/sheet adhesives, non-polymer organic compound adhesives, etc., can solve the problem of implosion, reaction heat that is difficult to dissipate in time, and difficult to realize Industrialization and other issues, to achieve the effect of simplifying the preparation process and safe and stable curing process

Active Publication Date: 2012-07-04
广东宏昌新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during bulk polymerization, the reaction heat of the system is difficult to dissipate in time, which can easily cause implosion, making it difficult to realize industrialization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In the reactor, add 200g nitrile rubber (Ruion company DN4050, acrylonitrile content 35%), then add by 1.2Kg butyl acrylate, 480g acrylate-2-ethylhexyl, 220g ethyl acrylate and 100g acrylic acid composition Acrylate mixed monomers, stirred at room temperature for 3 hours to completely dissolve the nitrile rubber. Then add 30g of nano-silica (Degussa A200, average particle size 12nm), stir at 800 rpm for 30min, then ultrasonically disperse for 10min, then add 12g of benzophenone, continue at 800rpm Stir for 10 minutes to obtain a UV-curable pressure-sensitive adhesive composition. The viscosity of this pressure-sensitive adhesive composition is 500cp.

[0025] The obtained pressure-sensitive adhesive composition is evenly coated on a polyester (PET) film with a coating machine, and the thickness of the adhesive layer is controlled to be 20 μm, covered with a layer of release polyester film, and then placed at 20 cm under a 2000W high-pressure mercury lamp. After irradi...

Embodiment 2

[0027] The components of the pressure-sensitive adhesive composition in the above-mentioned embodiment 1 are changed as follows:

[0028] Styrene-butadiene-styrene polymer elastomer (YH-792 of Yueyang Baling Petrochemical Company) 300g, butyl acrylate 700g, 2-ethylhexyl acrylate 700g, 150g ethyl acrylate and 150g acrylic acid. Other components and conditions remain unchanged. The pressure-sensitive adhesive composition viscosity that makes is 415cp.

[0029] The obtained pressure-sensitive adhesive composition is uniformly coated on a polypropylene (BOPP) film with a coating machine, and the thickness of the adhesive layer is controlled to be 25 μm, covered with a release polyester film, and then placed at 20 cm under a 2000W high-pressure mercury lamp. Irradiation 60s. The properties of the prepared pressure-sensitive adhesive tape are: 180° peel strength of 6.5N / 25mm, initial tack of 19#, and persistent tack of >24h.

Embodiment 3

[0031] In reactor, add 200g nitrile rubber (Ruion company DN4050, acrylonitrile content 35%), then add by 1.2Kg butyl acrylate, 400g acrylate-2-ethylhexyl, 200g acrylate-2-hydroxyethyl and 200g of acrylic acid ester mixed monomer, stirred at room temperature for 3 hours to completely dissolve the nitrile rubber. Then add 15g nano-titanium dioxide (Degussa AEROXIDE TiO 2 P25, average particle diameter 21nm), disperse 30min with the rotating speed of 800 rev / mins, then disperse 10min with the ultrasonic frequency greater than 40KHz, then add 20g 1-hydroxycyclohexyl phenyl ketone (I-184 of Ciba Fine Chemical Company) and continue stirring for 10 minutes to obtain a UV-curable pressure-sensitive adhesive composition. The viscosity of this pressure-sensitive adhesive composition is 460cp.

[0032] The obtained pressure-sensitive adhesive composition is uniformly coated on a polyester (PET) film with a coating machine, and the thickness of the adhesive layer is controlled to be 2...

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Abstract

The invention discloses a pressure-sensitive adhesive capable of being solidified by ultraviolet light and a preparation method as well as a method for preparing an adhesive tape by using the pressure-sensitive adhesive. The pressure-sensitive adhesive is prepared by the following steps of: adding an acrylate monomer mixture into a flexible polymer selected from natural rubber, butadiene styrene rubber and the like, stirring at normal temperature and then adding inorganic nano particles which are selected from nano silicon dioxide, nano titanium dioxide or nano calcium carbonate and have the grain diameter of 10 to 300 nanometers and a free radical type photoinitiator selected from an aromatic ketone or aromatic carbonyl compound; and stirring evenly so as to obtain the pressure-sensitiveadhesive. The method for preparing the adhesive tape comprises the following steps of: coating the prepared pressure-sensitive adhesive capable of being solidified by the ultraviolet light on a substrate, covering a layer of discrete type polypropylene film or polyester film on the pressure-sensitive adhesive, putting under the ultraviolet light for irradiation and removing the covering film after solidifying so as to obtain the pressure-sensitive adhesive tape. The invention has the advantages that the pressure-sensitive adhesive does not contain a volatile organic solvent, the solidification process is safer and more stable, a high-performance pressure-sensitive adhesive product can be prepared by solidification under the irradiation of the ultraviolet light after the pressure-sensitiveadhesive is coated at the substrate, the preparation process is simplified, and the invention has environmental protection and energy saving.

Description

technical field [0001] The invention relates to the preparation of a pressure-sensitive adhesive and a pressure-sensitive adhesive tape, in particular to a preparation method of an ultraviolet light-curable pressure-sensitive adhesive composition and an adhesive tape product. Background technique [0002] With the continuous enhancement of people's awareness of environmental protection, the preparation technology of pressure-sensitive adhesives and their products has also undergone a cross-change from traditional solvent-based pressure-sensitive adhesives to emulsion-type and hot-melt pressure-sensitive adhesives. Although emulsion-type and hot-melt pressure-sensitive adhesives have good environmental protection characteristics, the energy consumption of emulsion-type pressure-sensitive adhesives is high when drying, and the water resistance of the tape is poor; hot-melt pressure-sensitive adhesives must be heated and coated, and the heat resistance of the tape Compared with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08C19/00C09J4/06C09J167/06C09J11/04C09J7/02C09J7/04
Inventor 唐敏锋吴伟卿
Owner 广东宏昌新材料科技有限公司
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