High temperature-resistant polyacrylate pressure-sensitive adhesive emulsion and preparation method and application thereof

A polyacrylate and pressure-sensitive adhesive emulsion technology, which is applied in the direction of ester copolymer adhesives, adhesive types, rosin adhesives, etc., can solve the problem of easy residual adhesive, inability to completely replace, and unsatisfactory high temperature resistance and other issues, to achieve the effect of ensuring mechanical stability, cost saving, and environmental protection

Inactive Publication Date: 2011-02-16
新丰杰力电工材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, emulsion-type polyacrylate pressure-sensitive adhesives cannot completely replace solvent-type pressure-sensitive adhesives in terms of comprehensive performance, especially for products that require high temperature resistance and mechanical properties.
Japanese patent JP2005136298-A relates to a pressure-sensitive adhesive prepared by adding a cross-linking agent containing isocyanate and epoxy groups and melamine to a polyacrylate emulsion synthesized by copolymerization of butyl acrylate, acrylonitrile and acrylic acid, but the pressure The sensitive adhesive has poor mechanical properties, the peel strength is less than 200N/m, and the stability is not good, a

Method used

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  • High temperature-resistant polyacrylate pressure-sensitive adhesive emulsion and preparation method and application thereof

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0067] Example 1

[0068] The formula of high temperature resistant polyacrylate pressure sensitive adhesive emulsion is:

[0069] 80 parts of 2-ethylhexyl acrylate

[0070] Styrene 14 parts

[0071] Acrylic 4 parts

[0072] 2 parts of hydroxyethyl acrylate

[0073] 15 parts of polymerized rosin

[0074] Allyloxy nonylphenol polyoxyethylene (10) ether 3 parts

[0075] 4 parts of melamine methyl etherified resin

[0076] 0.4 parts of potassium persulfate

[0077] 4 parts of ammonia

[0078] 100 parts of water.

[0079] The preparation method includes the following steps:

[0080] (1) Add 3 parts of allyloxy nonylphenol polyoxyethylene (10) ether and 40 parts of water into the emulsification kettle, stir to obtain a reactive emulsifier aqueous solution; dissolve 15 parts of polymerized rosin in 80 parts of acrylic -2- Ethylhexyl ester, 14 parts styrene, 4 parts acrylic acid and 2 parts hydroxyethyl acrylate mixed monomers, and slowly add the dissolved mixture to the aqueous solution of reactive ...

Example Embodiment

[0086] Example 2

[0087] The preparation method and conditions of the heat-resistant polyacrylate pressure-sensitive adhesive emulsion are as in Example 1. The amount of polymerized rosin is reduced to 10 parts, and the melamine methyl etherified resin is reduced to 3.5 parts, to prepare the high-temperature polyacrylate pressure-sensitive adhesive emulsion .

[0088] The obtained emulsion was prepared into a pressure-sensitive adhesive, as shown in Table 1: Under the condition of little change in mechanical properties, the temperature resistance of the pressure-sensitive adhesive was increased to 150°C. Therefore, it can be seen that when the amount of polymerized rosin is reduced from 15 parts to 10 parts, the temperature resistance of the pressure-sensitive adhesive can be increased by 30°C.

Example Embodiment

[0089] Example 3

[0090] The formula of high temperature resistant polyacrylate pressure sensitive adhesive emulsion is as follows,

[0091] Butyl acrylate 60 parts

[0092] 30 parts of 2-ethylhexyl acrylate

[0093] 6 parts of methyl methacrylate

[0094] Acrylic 4 parts

[0095] 2 parts of hydroxyethyl acrylate

[0096] 7 parts of polymerized rosin

[0097] Allyloxy nonylphenol polyoxyethylene (10) ether ammonium sulfate 1 part

[0098] One part of aziridine derivative

[0099] Potassium persulfate 0.3 parts

[0100] 4 parts of ammonia

[0101] 100 parts of water.

[0102] The preparation method includes the following steps:

[0103] (1) Add 1 part of allyloxynonylphenol polyoxyethylene (10) ether ammonium sulfate and 40 parts of water into the emulsification tank, stir to obtain a reactive emulsifier aqueous solution; dissolve 7 parts of polymerized rosin in 60 parts of acrylic butyl Ester, 30 parts of 2-ethylhexyl acrylate, 6 parts of methyl methacrylate, 4 parts of acrylic acid, 2 parts o...

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Abstract

The invention relates to high temperature-resistant polyacrylate pressure-sensitive adhesive emulsion and a preparation method and application thereof. The emulsion mainly consists of a hard monomer, a soft monomer, a functional monomer, reactive tackifying resin, a reactive emulsifier, an initiator and a curing agent. The preparation method comprises the following steps of: adding a monomer dissolved with the tackifying resin into the aqueous solution of the reactive emulsifier for pre-emulsification by adopting the pre-emulsification semi-continuous seeding polymerization process, performing polymerization on the pre-emulsified liquid through the initiator, and adding the curing agent to prepare the high temperature-resistant polyacrylate pressure-sensitive adhesive emulsion. The pressure-sensitive adhesive of the invention has heat resistance of 200 DEG C, has excellent water resistance, aging resistance and mechanical property, and can be widely applied to the fields of electronics, electrical appliances, automobile manufacturing and the like.

Description

technical field [0001] The invention relates to the field of water-based pressure-sensitive adhesives, in particular to a high-temperature-resistant polyacrylate pressure-sensitive adhesive emulsion and its preparation method and application. technical background [0002] High temperature resistant pressure-sensitive adhesive generally means that after a period of time at a certain temperature, when it is peeled off from the adherend, there will be no residual glue on the adherend and a certain mechanical strength. High temperature resistant pressure-sensitive adhesives are used in environments of 130°C or higher, such as bonding, protection, fixing, and insulation of transformers, motors, coils, circuit boards, etc. in the fields of electronics, electrical appliances, and automobile manufacturing. , sealing, shock absorption. According to different working environments and requirements, pressure sensitive adhesives have different high temperature resistance grades (130°C, ...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F220/28C09J133/08C09J193/04C08F2/24C08F220/06C08F212/08C08F220/18
Inventor 陈平绪袁堂国曾幸荣蔡新全李红强刘明凯刘晓丹刘丹丹
Owner 新丰杰力电工材料有限公司
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