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Magnetic material adhesive and preparation method thereof

A technology for adhesives and magnetic materials, applied in the directions of adhesives, non-polymer adhesive additives, non-polymeric organic compound adhesives, etc. Weakness and other problems, to achieve the effect of easy operation, fast bonding speed and long shelf life

Active Publication Date: 2013-07-17
浙江久而久化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at the same time, the glue also has shortcomings such as brittleness, poor water resistance, and weak impact resistance, so its application range is limited to a certain extent.
For this reason, people have done a lot of modification research on these shortcomings. Henkel (Patent Application No.: 200680032444.7) in the United States has improved the strength, Impact resistance, but at the same time the curing time and storage stability of the adhesive are slowed down

Method used

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  • Magnetic material adhesive and preparation method thereof
  • Magnetic material adhesive and preparation method thereof
  • Magnetic material adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Put a-cyanoacrylate ethyl into a three-necked flask, then add 10% diallyl phthalate, 680ppm maleic anhydride, 800ppm modifier , 50ppm anionic polymerization inhibitor (sulfur dioxide: boron trifluoride complex = 1: 1) and 500ppm free radical polymerization inhibitor (hydroquinone: p-methoxyphenol = 5: 1) were stirred at 40°C until uniform.

[0017] Measure shear strength, impact strength and water resistance (shear strength after immersion in water) data by embodiment 1 and see the following table:

[0018] Test 1: No Modifier

[0019] Test 2: 800ppm hydroxypropiolactone phthalate

[0020] Test 3: 800ppm pyrogallol

[0021] Test 4: 800ppm modifier (hydroxypropiolactone phthalate: bipyrogallol = 1:1 mixture)

[0022]

[0023] From the experimental data, it can be concluded that the strength, water resistance and impact strength of the adhesive with hydroxypropiolactone phthalate as the modifier are better than those of the other two groups.

Embodiment 2

[0025] Put α-ethyl cyanoacrylate into a three-necked flask, then add 10% diallyl phthalate, 680ppm maleic anhydride, modifier, 50 ppm anionic polymerization inhibitor (methanesulfonic acid) and 500 ppm free radical polymerization inhibitor (hydroquinone: p-methoxyphenol=5:1) were stirred at 60°C until uniform.

[0026] Measure shear strength, impact strength and water resistance (shear strength after immersion in water) data by embodiment 2 and see the following table:

[0027] Test 1: 300ppm hydroxypropiolactone phthalate

[0028] Test 2: 800ppm hydroxypropiolactone phthalate

[0029] Test 3: 1000ppm hydroxypropiolactone phthalate

[0030]

[0031]

[0032] It can be concluded from the experimental data that the strength, water resistance and impact strength of the adhesive are better when the amount of phthalate hydroxypropiolactone salt is 800 ppm.

Embodiment 3

[0034] Put a-cyanoacrylate ethyl into a three-necked flask, then add 10% diallyl phthalate, 680ppm maleic anhydride, 800ppm modifier (hydroxypropiolactone phthalate), anionic polymerization inhibitor and 500ppm free radical polymerization inhibitor (hydroquinone: p-methoxyphenol=5:1) were stirred at 50°C until uniform.

[0035] Measure shear strength, impact strength and water resistance (shear strength after immersion in water) data by embodiment 3 and see the following table:

[0036] Test 1: 50ppm sulfur dioxide

[0037] Test 2: 50ppm boron trifluoride complex

[0038] Test 3: 50ppm p-toluenesulfonic acid

[0039] Test 4: 50ppm anionic polymerization inhibitor (sulfur dioxide: methanesulfonic acid = 2:1 mixture)

[0040]

[0041] From the experimental data, it can be concluded that the strength, water resistance and impact strength of the adhesive are better when the anionic polymerization inhibitor adopts 50ppm p-toluenesulfonic acid.

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Abstract

The invention relates to a magnetic material adhesive and a preparation method thereof. The components of the magnetic material adhesive comprise a-cyan ethyl acrylate as a main part, wherein the mass of diallyl phthalate is 6%-18% that of the a-cyan ethyl acrylate; the mass of maleic anhydride is 500-850 ppm that of the a-cyan ethyl acrylate; the mass of a modifier is 250-1,000 ppm of the a-cyan ethyl acrylate; the mass of an anion polymerization inhibitor is 30-1,00 ppm that of the a-cyan ethyl acrylate and the mass of a free radical polymerization inhibitor is 300-750 ppm that of the a-cyan ethyl acrylate. During the preparation, all the components are mixed at a temperature of 40-60 DEG C and stirred to uniform, and thus the magnetic material adhesive with fast adhesive speed, super penetration, high strength, impact resistance and water resistance can be obtained. The preparation process of the invention is simple and easy to operate. The strength, the impact resistance and the water resistance of the adhesive are greatly improved without influencing original fast adhesive speed and long storage life of the adhesive. The magnetic material adhesive has a certain application value.

Description

technical field [0001] The invention relates to the field of alpha-cyanoacrylate ethyl adhesive, in particular to a magnetic material adhesive and a preparation method thereof. Background technique [0002] In 1947, A.E.Ardis first synthesized a-cyanoacrylate and obtained a patent right. In the 1950s, researchers at Eastman Kodak accidentally discovered the adhesive properties of a-cyanoacrylate and officially launched the world's first a-glue. Subsequently, Japan, West Germany and other countries also put into production one after another, and my country began research and production in the 1960s. As soon as a-glue came out, it has developed rapidly, with more varieties, increased output, expanded uses, and improved performance. It has been widely used in electronics, machinery, medical, industrial, civil and other fields. [0003] The adhesive for magnetic materials is mainly a-cyanoacrylate ethyl ester monomer, and under the action of different catalysts or initiators, ...

Claims

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Application Information

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IPC IPC(8): C09J4/04C09J11/06
Inventor 陈金才龚业徽张婷婷
Owner 浙江久而久化学有限公司
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