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A kind of double-layer amine accelerator microcapsule and preparation method thereof

An amine accelerator and microcapsule technology, which is applied in the field of double-layer amine accelerator microcapsules and their preparation, can solve problems such as poor sealing performance of microcapsules, and achieve the effects of solving easy clogging, long operation time and satisfying high-speed production.

Active Publication Date: 2017-11-14
GUANGDONG HENGDA NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor sealing performance of the microcapsules prepared by the interfacial polymerization method, double-layer or multi-layer microcapsules have been proposed, and some preliminary researches have been carried out.

Method used

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  • A kind of double-layer amine accelerator microcapsule and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Add 200ml of water into a 500ml three-neck flask and heat to 50°C. 2.0 g of gum arabic and 5 g of Dow EH-9 were added thereto, and stirred at 1500 rpm until mixed and dissolved.

[0032] Take 23g of epoxy resin E-58, and add 45g of N,N-dimethyl-p-toluidine into it. After mixing evenly, it was slowly added into the above-mentioned three-necked flask at a stirring rate of 1500 rpm, and emulsified by high-speed shearing for 10 minutes. Raise the temperature of the water bath to 55° C., and the rotation speed to 300 rpm. Mix and dissolve 8g of tetraethylenepentamine and 15g of acetone, place a constant pressure funnel, and gradually add it dropwise into a three-necked flask while stirring, at a rate of 0.3-0.5s / drop. After the dropwise addition is completed, keep stirring while keeping warm for 60 minutes, raise the temperature of the water bath to 65°C, stop stirring after keeping warm for 3 hours, filter with suction, wash with deionized water until neutral, and obtain ...

Embodiment 2

[0035] Add 200ml of water into a 500ml three-neck flask and heat to 50°C. 1.0 g of gum arabic and 3 g of Dow EH-9 were added thereto, and stirred at 1500 rpm until mixed and dissolved.

[0036]Take 23g of novolac epoxy resin F-51, and add 36g of N,N-dimethyl-p-toluidine into it. After mixing evenly, it was slowly added into a three-necked flask at a stirring rate of 1500 rpm, and emulsified by high-speed shearing for 10 minutes. Raise the temperature of the water bath to 55° C., and the rotation speed to 600 rpm. Take 16g of DMP-30 and 30g of acetone, mix and dissolve, place a constant pressure funnel, and add dropwise gradually at a rate of 0.3-0.5s / drop. After the dropwise addition, keep the reaction for 60 minutes, raise the temperature of the water bath to 65°C, stop the stirring after another 2 hours of heat preservation, filter with suction, wash with deionized water until neutral, and obtain single-layer amine accelerator microcapsules.

[0037] Take 30g of paraffin,...

Embodiment 3

[0039] Add 200ml of water into a 500ml three-neck flask and heat to 50°C. 2.0 g of gum arabic and 5 g of EH-9 were added thereto, and stirred at 1200 rpm until mixed and dissolved.

[0040] Take 28g of epoxy resin AG-80, and add 32g of N,N-dimethyl-p-toluidine into it. After mixing evenly, it was slowly added into a three-necked flask at a stirring rate of 1500 rpm, and emulsified by high-speed shearing for 10 minutes. Raise the temperature of the water bath to 55° C., and the rotation speed to 600 rpm. Take 22g of DMP-30 and 30g of acetone, mix and dissolve, place a constant pressure funnel, and add dropwise gradually at a rate of 0.3-0.5s / drop. After the dropwise addition was completed, keep the reaction for 30 minutes, raise the temperature of the water bath to 65°C, stop the stirring after another 2 hours of heat preservation, filter with suction, wash with deionized water until neutral, and obtain single-layer amine accelerator microcapsules.

[0041] Take 50g of glyce...

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Abstract

The invention provides a two-layer amine type accelerator microcapsule and a preparation method thereof. The two-layer amine type accelerator microcapsule is formed by a capsule core, an inner capsule wall and an outer capsule wall, wherein the inner capsule wall and the outer capsule wall are used for successively coating the capsule core; the capsule core is an amine type accelerator; the inner capsule wall is prepared by reacting epoxy resin and a curing agent; the outer capsule wall is prepared by condensing a waxy substance. An adhesive prepared from the two-layer amine type accelerator microcapsule has the effects of fast hot-pressing and curing and long operation time and can meet the requirements of fast production of production lines.

Description

technical field [0001] The invention relates to the field of adhesives, in particular to a double-layer amine accelerator microcapsule and a preparation method thereof. Background technique [0002] Microcapsule technology is a technology that uses film-forming materials to coat solid or liquid to form tiny particles, which can be widely used in the protection of pharmaceuticals and active substances. A kind of acrylic structural adhesive used in the electronics industry. At present, two components are generally used at home and abroad. The main part is acrylate containing an accelerator, and the other part contains a curing agent of a peroxygen initiator. The two components are in a certain proportion. When mixing, the accelerator and the peroxygen initiator react to generate free radicals to initiate the polymerization of the acrylate monomer to cure. When used in the assembly and bonding of electronic product shells, due to the limitation of materials and time costs, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J11/06C09J4/02C09J4/06B01J13/02B01J13/06
CPCB01J13/02B01J13/06C09J4/06C09J11/06
Inventor 张磊刘运洪陈坚锐张耀聪龙正宇周为民
Owner GUANGDONG HENGDA NEW MATERIALS TECH
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