Preparation method of nano ferroferric oxide modified water-based acrylate magnetic pressure-sensitive adhesive

A technology of water-based acrylate and ferroferric oxide, which is applied in the field of materials, can solve the problems of complex operation, high production cost, and easy agglomeration, and achieve good compatibility, good adhesion, and good thermal stability.

Inactive Publication Date: 2017-05-31
SHAANXI YIPINDA PETROCHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many methods for modifying acrylate pressure-sensitive adhesives. The commonly used methods are cross-linking modification, tackifying resin modification, polyurethane modification, silicone modification, and reactive emulsifier modification. However, the operation is complicated and the production cost is high. high
Nanoparticle modification has been developed subsequently, but due to the small size of nanoparticles, it is easy to agglomerate when reacting with polymeric materials, so that the superiority of nanoparticle size cannot be brought into play.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The preparation method of nanometer iron ferric oxide modified waterborne acrylate magnetic pressure-sensitive adhesive comprises the following steps:

[0016] (1) Modification of nano-ferric oxide particles: Weigh 6g of nano-ferric oxide particles and add them to the mixed solution of ethanol and water, sonicate at 30°C and 100 W for 30min, and add the mixed solution after ultrasonic Put it into a three-necked flask equipped with a thermometer, condenser, and stirrer, and add silane coupling agent accounting for 2% of the solution volume, adjust the pH value of the system to 6-7 with glacial acetic acid, let it stand for 6 hours, and keep it at a constant temperature of 50°C , stirred for 2 h, cooled to room temperature and centrifuged, washed with ethanol and then vacuum-dried for 72 h to obtain ferric oxide particles after surface modification by silane coupling agent;

[0017] (2) Preparation of nano-ferric oxide modified water-based acrylate magnetic pressure-sensi...

Embodiment 2

[0019] The preparation method of nanometer iron ferric oxide modified waterborne acrylate magnetic pressure-sensitive adhesive comprises the following steps:

[0020] (1) Modification of nano-ferric oxide particles: Weigh 6g of nano-ferric oxide particles and add them to the mixed solution of ethanol and water. The volume ratio of ethanol and water is 3:1. Sonicate at 100 W for 30 minutes, add the ultrasonically mixed solution into a three-necked flask equipped with a thermometer, condenser, and stirrer, and add silane coupling agent accounting for 2% of the solution volume, and adjust the pH of the system with glacial acetic acid to 6-7, stand still for 6 hours, stir for 2 hours at a constant temperature of 50°C, cool to room temperature and centrifuge, wash with ethanol and then vacuum-dry for 72 hours to obtain ferric oxide particles after surface modification by silane coupling agent;

[0021] (2) Preparation of nano-ferric oxide modified water-based acrylate magnetic pres...

Embodiment 3

[0023] The preparation method of nanometer iron ferric oxide modified waterborne acrylate magnetic pressure-sensitive adhesive comprises the following steps:

[0024] (1) Modification of nano-ferric oxide particles: Weigh 6g of nano-ferric oxide particles and add them to the mixed solution of ethanol and water. The volume ratio of ethanol and water is 3:1. Ultrasound at 100 W for 30 minutes, add the ultrasonically mixed solution into a three-necked flask equipped with a thermometer, a condenser, and a stirrer, and add a silane coupling agent accounting for 2% of the solution volume, wherein the silane coupling agent is γ- Methacryloxypropyltrimethoxysilane, adjust the pH of the system to 6-7 with glacial acetic acid, let it stand for 6 hours, stir for 2 hours at a constant temperature of 50°C, cool to room temperature and centrifuge, wash with ethanol Then vacuum-dry at 50°C for 72 hours to obtain ferric oxide particles surface-modified by the silane coupling agent;

[0025] ...

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Abstract

The invention discloses a preparation method of a nano ferroferric oxide modified water-based acrylate magnetic pressure-sensitive adhesive. The preparation method comprises the following steps: (1) weighing nano ferroferric oxide particles and adding into a mixed solution of ethanol and water; carrying out ultrasonic treatment; modifying by a silane coupling agent to obtain the silane coupling agent modified ferroferric oxide particles; (2) after carrying out ultrasonic dispersion on a water solution of the modified ferroferric oxide particles, adding into a NaHCO3 solution; mixing nonylphenyl polyoxyethylene ether sulfate triethanolamine, de-ionized water, butyl acrylate, methyl methacrylate, hydroxyethyl acrylate and acrylic acid to prepare pre-emulsified emulsion; and taking the pre-emulsified emulsion, an initiator and the NaHCO3 solution mixed with ferroferric oxide to react, so as to obtain the nano ferroferric oxide modified water-based acrylate magnetic pressure-sensitive adhesive. According to the method provided by the invention, the nano ferroferric oxide has good compatibility with acrylate emulsion; the obtained pressure-sensitive adhesive has good thermal stability and good cohesive property.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a preparation method of nanometer iron ferric oxide modified water-based acrylate magnetic pressure-sensitive adhesive. Background technique [0002] Water-based acrylic pressure-sensitive adhesives are widely used in the fields of labels, tapes, medical supplies, and disposables due to their simple preparation process, low cost, no organic solvents, long pot life, and high solid content. However, ordinary water-based acrylic pressure-sensitive adhesives have shortcomings such as water resistance, high temperature resistance, slow coating and drying speed, and it is still difficult to replace solvent-based acrylic pressure-sensitive adhesives in some high-quality pressure-sensitive adhesive fields. Therefore, improving the performance of water-based pressure-sensitive adhesives through modification has always been the research focus of the current adhesive industry. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J11/04C08K9/06C08K3/22C08F220/18C08F220/14C08F220/28C08F220/06
CPCC08F220/18C08F220/1804C08K3/22C08K9/06C08K2003/2275C08K2201/01C09J11/04C09J133/08C08F220/14C08F220/281C08F220/06
Inventor 李长英
Owner SHAANXI YIPINDA PETROCHEM CO LTD
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