Ultrahigh-viscosity acrylate emulsion pressure-sensitive adhesive and preparation method thereof

An acrylate, ultra-high viscosity technology, used in the field of pressure-sensitive adhesives, can solve the problems of poor adhesion of non-polar materials, poor low-temperature adhesion, and small initial adhesion adjustment space, and achieve the effect of a wide range of performance.

Active Publication Date: 2020-05-22
JIANGSU JINGHONG NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the shortcomings of water-based acrylate pressure-sensitive adhesives such as small adjustable space for initial adhesion, poor low-temperature adhesiveness, and poor performance of bonding non-polar materials, the invention creatively makes liquid tackifying resin into sub-micron level, and uses it as a seed Emulsion polymerization, the prepared pressure-sensitive adhesive has excellent initial tack, bonding strength and temperature resistance

Method used

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  • Ultrahigh-viscosity acrylate emulsion pressure-sensitive adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Weigh each component according to the weight ratio, add 0.3g of allyloxy nonylphenol polyoxyethylene ether sulfate to 15g of deionized water, and stir at room temperature to obtain an aqueous emulsifier solution; dissolve 0.6g of hexadecane in 15g of liquid Add the rosin resin to the emulsifier aqueous solution, stir and mix for 30 minutes, and the stirring speed is 500r / min to obtain a pre-emulsion, and then disperse the pre-emulsion in a high-speed homogenizer with a rotation speed of 15000r / min for 30 minutes to obtain a tackifying resin microemulsion;

[0040] Weigh 1.8g of allyloxy nonylphenol polyoxyethylene ether sulfate, 0.6g of allyloxy fatty alcohol polyoxyethylene ether and add it to 140g of water, stir at room temperature to obtain an emulsifier aqueous solution, and then slowly add 192g butyl acrylate, 63g isooctyl acrylate, 30g methyl methacrylate, 9g β-acryloyloxypropionic acid, 6g ethylene urea ethoxy methacrylate, 0.75g ammonium persulfate, stir for 30mi...

Embodiment 2

[0043] Weigh each component according to the weight ratio, add 0.2g allyloxy fatty alcohol oxyethylene ether sulfate, 0.1g sodium methacrylamide isopropyl sulfonate to 15g water and stir at room temperature to obtain an emulsifier aqueous solution; Dissolve 0.9g of cetyl alcohol in 27g of liquid rosin resin and add it to the emulsifier aqueous solution, stir and mix for 30min at a stirring speed of 500r / min to obtain a pre-emulsion, and then disperse the pre-emulsion in a high-speed homogenizer with a speed of 15000r / min 30min, obtain tackifying resin microemulsion;

[0044] Weigh 1.8g of alkyl allyl sulfosuccinic acid sodium salt and 0.6g of allyloxy fatty alcohol polyoxyethylene ether into 140g of water, stir at room temperature to obtain emulsifier aqueous solution, then slowly add 198g of acrylic acid to the emulsifier aqueous solution Butyl ester, 66g isooctyl acrylate, 24g methyl methacrylate, 6g acrylic acid, 6g acetoacetoxyethyl methacrylate, 0.75g ammonium persulfate,...

Embodiment 3

[0047] Weigh each component according to the weight ratio, add 0.5g of allyloxy fatty alcohol oxyethylene ether sulfate to 15g of water and stir at room temperature to obtain an emulsifier aqueous solution; dissolve 0.6g of hexadecane in 12g of liquid rosin resin and add it to In the emulsifier aqueous solution, stir and mix for 30min at a stirring speed of 500r / min to obtain a pre-emulsion, and then disperse the pre-emulsion in a high-speed homogenizer with a rotation speed of 15000r / min for 30min to obtain a tackifying resin microemulsion;

[0048] Weigh 1.8g of alkyl allyl sulfosuccinic acid sodium salt and 0.6g of allyloxy fatty alcohol oxyethylene ether sulfate into 140g of water, stir at room temperature to obtain an emulsifier aqueous solution, and then slowly add 189g of emulsifier to the emulsifier aqueous solution Butyl acrylate, 63g isooctyl acrylate, 33g methyl methacrylate, 6g methacrylic acid, 9g N-hydroxyethyl acrylamide, 0.75g ammonium persulfate, stirred for 30...

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Abstract

The invention relates to an ultrahigh-viscosity acrylate emulsion pressure-sensitive adhesive. The ultrahigh-viscosity acrylate emulsion pressure-sensitive adhesive is prepared from the following rawmaterials in parts by weight: 70-120 parts of an acrylate monomer, 1-5 parts of a functional monomer, 1-5 parts of an internal crosslinking monomer, 1-15 parts of liquid tackifying resin, 0.3-2 partsof an emulsifier, 0.2-1 part of an initiator, 0.05-0.3 part of a reducing agent, 0.05-1 part of a wetting agent, 0.05-1 part of a defoaming agent and 70-130 parts of deionized water. According to theinvention, the submicron liquid tackifying resin is creatively prepared and is used as a seed for emulsion polymerization, and the tackifying resin is wrapped in latex particles, so a special core-shell structure is formed, with a core being the tackifying resin and a shell being polyacrylate; the core and the shell are fused with each other in the process of film forming, so a formed adhesive film has excellent initial adhesion, bonding strength and temperature resistance; and a ratio of the core to the shell is adjustable, a performance range is wide, a new idea is provided for solving the defect of poor comprehensive performance of water-based acrylate pressure-sensitive adhesives, and the adhesive can be popularized and used in a large range.

Description

technical field [0001] The invention belongs to the field of pressure-sensitive adhesives, and in particular relates to an ultra-high-viscosity acrylate emulsion pressure-sensitive adhesive and a preparation method thereof. Background technique [0002] With people's emphasis on environmental protection, safety, energy saving and the continuous expansion of the application of pressure-sensitive adhesives, pressure-sensitive adhesives are promoted to develop in the direction of low pollution, high performance and functionalization. Emulsion-type acrylate pressure-sensitive adhesives are environmentally friendly and free of organic solvents, etc. It has been greatly developed in recent years, but its application in many fields is limited due to its own inherent defects, such as bonding applications at low temperature and bonding applications on non-polar materials. [0003] Acrylate emulsion pressure-sensitive adhesive, the dispersion medium is water, the polymer is stably dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J151/00C09J7/38C08F289/00C08F220/18C08F220/14C08F220/36C08F220/28C08F222/16C08F220/06C08F220/58
CPCC08F289/00C09J151/00C09J2467/006C09J7/385C08F220/14C08F220/36C08F222/16C08F220/06C08F220/58
Inventor 孙大伟吴培龙吴松陆银秋万灵书
Owner JIANGSU JINGHONG NEW MATERIAL TECH
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