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A two-component emulsion type polyacrylate pressure-sensitive adhesive and its preparation method and application

A polyacrylate and emulsion type technology, which is applied in the direction of adhesives, adhesive types, ester copolymer adhesives, etc., can solve the problems of low comprehensive performance of pressure-sensitive adhesives, decline, and large particle size of emulsions.

Inactive Publication Date: 2017-06-06
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Invention patent CN102533174A uses tackifying resin and acrylate emulsion to prepare pressure-sensitive adhesive with high initial adhesion and high peel strength, but the stability and compatibility of the emulsion prepared in this way need to be further explored
Invention patent CN104910838A adopts the process of simply adding emulsifier, adding an appropriate amount of emulsifier during the emulsion polymerization reaction, forming new latex particles in the middle of the second stage of the reaction or increasing the number of polymerization reaction particles to improve the molecular weight distribution. Improve the stripping performance of the emulsion pressure-sensitive adhesive, but if the amount of the reactive emulsifier is too much, the grafting rate of the reactive emulsifier to the polymer chain itself is not high, and it is easy to copolymerize in the water phase, or form a relative Polymers rich in hydrophilic groups with a large molecular weight are easy to adsorb several particles at the same time and coagulate to make the particle size of the emulsion larger; these will have a negative impact on improving the overall performance
Invention patent CN104004477A adopts kethydrazine crosslinking system, at room temperature, self-crosslinking in the later stage of mold making to prepare emulsion type polyacrylate pressure sensitive adhesive with excellent performance. Cross-linking occurs with the loss of moisture to improve the bond strength and peeling force of the pressure-sensitive adhesive. The combined effect causes the cohesion of the pressure-sensitive adhesive to increase while the initial adhesion and 180° peel force decrease, resulting in lower comprehensive performance of the pressure-sensitive adhesive

Method used

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  • A two-component emulsion type polyacrylate pressure-sensitive adhesive and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0082] A preparation method of a two-component emulsion type polyacrylate pressure-sensitive adhesive, specifically comprising the following steps:

[0083] (1) Under the condition that the rotating speed is 400r / min stirring, put 25g deionized water, 0.4g 3-allyloxy-2-hydroxy-1-propanesulfonic acid sodium salt, 0.3g ammonium persulfate into the beaker , stir for 10 minutes and mix well; adjust the rotation speed to 800~1000r / min, then slowly add 30g butyl acrylate, 1.5g hydroxyethyl acrylate, 6g methyl acrylate, 20g isooctyl acrylate, 0.4g acrylic acid, 0.6g carboxyethyl acrylate base acrylate mixture, continue to stir for 10 minutes to obtain pre-emulsion I a ; Take out 2 g of pre-emulsion I a After that, add the remaining pre-emulsion I to the a Add 0.045g of chain transfer agent (dodecyl mercaptan) to the mixture, and disperse for 10 minutes under the dispersing condition of rotating speed 800~1000r / min to obtain pre-emulsion I b .

[0084] (2) add 25g deionized water,...

Embodiment 2

[0089] A preparation method of a two-component emulsion type polyacrylate pressure-sensitive adhesive, specifically comprising the following steps:

[0090] (1) Under the condition of stirring at a rotating speed of 400r / min, mix 50g of deionized water, 0.6g of 1-allyloxy-3-(4-nonylphenol)-2-propanol polyoxyethylene (10) ether Ammonium sulfate and 0.5g of ammonium persulfate were placed in a beaker, stirred for 10 minutes and mixed evenly; the rotation speed was adjusted to 800-1000r / min, and then 30g of butyl acrylate, 2g of hydroxyethyl acrylate, 10g of methyl methacrylate, 15g of methyl methacrylate were slowly added. A mixture of isooctyl acrylate, 0.4 g acrylic acid, 0.8 g carboxyethyl acrylate, 0.1 g buffer (sodium carbonate), and continue stirring for 10 minutes to obtain pre-emulsion I a ; To pre-emulsion I a Add 0.08g of chain transfer agent (dodecyl mercaptan) to the mixture, and disperse for 10 minutes under the dispersing condition of rotating speed 800~1000r / min ...

Embodiment 3

[0095] A preparation method of a two-component emulsion type polyacrylate pressure-sensitive adhesive, specifically comprising the following steps:

[0096](1) Under the condition of stirring at a rotating speed of 400r / min, mix 25g of deionized water, 0.5g of 1-allyloxy-3-(4-nonylphenol)-2-propanol polyoxyethylene (10) ether Ammonium sulfate and 0.3g potassium persulfate were placed in a beaker, stirred for 10 minutes and mixed evenly; the rotational speed was adjusted to 800-1000r / min, and then 38.5g butyl acrylate, 1.4g hydroxyethyl acrylate, 8g methyl acrylate, 16.5 A mixture of g isooctyl acrylate, 0.4 g acrylic acid and 0.6 g carboxyethyl acrylate, and continue stirring for 10 minutes to obtain pre-emulsion I a ; Take out 3 g of pre-emulsion I a After that, add the remaining pre-emulsion I to the a Add 0.06g of chain transfer agent (octadecyl mercaptan) to the medium, and disperse for 10 minutes under the dispersing condition of rotating speed 800~1000r / min to obtain p...

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Abstract

The invention discloses a dual-component emulsion polyacrylate pressure sensitive adhesive and a preparation method and application thereof and belongs to the field of functional high-polymer materials. The initial adhesive force, the continuous adhesive force, the stripping strength and other indexes of the obtained dual-component emulsion polyacrylate pressure-sensitive adhesive are excellent, and particularly the stripping strength of the dual-component emulsion polyacrylate pressure-sensitive adhesive makes greater breakthrough compared with other common pressure-sensitive adhesives. According to different applications, adjustment of mechanical properties can be achieved, and the requirements of various using ranges are met. The dual-component emulsion polyacrylate pressure-sensitive adhesive can be applied to adhesive tape, label paper, protective films, posters capable of being pasted and torn off, medical supplies and the like. According to different applications, by adjusting the weight ratio of a component I and a component II, different times when the component I is added into the component II, the chain transferring agent using amount of the two components and the varieties of the functional nonomers and changing the adding amount, outstanding practical performance is achieved. The pressure-sensitive adhesive can guarantee high stripping strength, balance of the initial adhesive force, the cohesive force and the stripping force is achieved, comprehensive performance of the pressure-sensitive adhesive is greatly improved, and high market practicability is achieved.

Description

technical field [0001] The invention belongs to the field of functional polymer materials and relates to an acrylate adhesive, in particular to a two-component emulsion type polyacrylate pressure-sensitive adhesive and a preparation method and application thereof. Background technique [0002] Pressure-sensitive adhesives are also pressure-sensitive adhesives. Slight pressure and short time during construction or use can quickly wet the surface of the adherend to produce strong adhesion. It is characterized by easy bonding, high peel strength, and there will be no glue remaining on the adherend to cause pollution after peeling off, and the adhesive layer will not dry and stiff for a long time, commonly known as self-adhesive. [0003] The traditional solution-type pressure-sensitive adhesive is flammable, toxic and pollutes the environment; it not only causes waste of resources, adversely affects the health of construction workers, but also seriously pollutes the environment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/08C09J11/08C08F220/18C08F220/28C08F220/14C08F220/06C08F222/10C08F2/26
CPCC08F2/26C08F220/18C08F220/1804C08F2500/05C09J11/08C09J133/08C09J2301/302C08F220/281C08F220/14C08F220/06C08F220/1808C08F222/10
Inventor 涂伟萍张明徽张翔崔航张炜祺卢明
Owner SOUTH CHINA UNIV OF TECH
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