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Epoxy stabilization using metal nanoparticles and nitrogen-containing catalysts, and methods

An epoxy resin, silver nanoparticle technology, applied in the direction of heterogeneous insulating materials, electrical components, insulators, etc., can solve problems such as final application application

Active Publication Date: 2019-10-29
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These properties impose practical limitations on the end use of such compositions

Method used

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  • Epoxy stabilization using metal nanoparticles and nitrogen-containing catalysts, and methods
  • Epoxy stabilization using metal nanoparticles and nitrogen-containing catalysts, and methods
  • Epoxy stabilization using metal nanoparticles and nitrogen-containing catalysts, and methods

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0108] Preparation and use of curable compositions

[0109] The metal nanoparticles are mixed first with the thiol component, nitrogen-containing catalyst, and then with the epoxy resin component and one or more optional additives such as nonionic surfactants. While any suitable amount of metal nanoparticles can be combined with the epoxy / thiol resin mixture, the amount generally depends on the amount and type of nitrogen-based catalyst in the catalyst-containing particle. In many embodiments, the nitrogen-containing catalyst is included in the composition in an amount of at least 0.1 weight percent, based on the total weight of the curable composition. If lower amounts are used, there may be an insufficient amount for the nitrogen-containing catalyst to polymerize the epoxy resin. The amount of nitrogen-containing catalyst can be, for example, at least 0.5 wt%, at least 1 wt%, at least 1.5 wt%, at least 2 wt%, or at least 2.5 wt%, based on the total weight of the curable c...

Embodiment 1-12

[0167] Embodiment 1-12 (E-1-12) and comparative example 1-5 (CE-1-5): one-component epoxy / thiol resin composition

[0168] For each of Examples 1-12, a corresponding amount of silver or copper nanopowder TMPMP and a suitable latent catalyst (e.g., CA-1 (curing agent, available under the trade designation ANCAMINE 2442) from Air Products Chemicals, Allentown, PA (Air Products and Chemical, Inc., Allentown, PA.)) or CA-2 (curing agent, available under the trade designation AJICURE PN-23 from ACCI Specialty Materials, Linden, NJ) ) combined in a MAX300 cup (FlackTek Inc., Landrum, SC, USA) with a DAC 150.1FV Speedmixer (FlackTek Inc., Landrum, SC, USA) (Flaccktek Inc., Landrum, SC, USA)) was thoroughly mixed at 2000 revolutions per minute (rpm) for 1 minute. After cooling to room temperature for 1 minute, ER828 (epoxy resin containing diglycidyl ether of bisphenol A , available under the trade designation EPON RESIN 828 from Momentive Specialty Chemicals, Inc., Columbus, OH), ...

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Abstract

The present disclosure provides a curable, one-part epoxy / thiol resin composition. The composition comprises an epoxy / thiol resin mixture including: an epoxy resin component including an epoxy resin having at least two epoxide groups per molecule, a thiol component including a polythiol compound having at least two primary thiol groups, and a nitrogen- containing catalyst for the epoxy resin. Theepoxy / thiol resin mixture further includes metal nanoparticles (e.g., silver nanoparticles, copper nanoparticles, or both), dispersed in the epoxy / thiol resin mixture. The present disclosure providesa method of curing a curable, one-part epoxy / thiol resin composition, including providing a curable, one-part epoxy / thiol resin composition and heating the composition to a temperature of at least 50DEG C.

Description

technical field [0001] The present disclosure relates to curable epoxy-based compositions and methods of curing epoxy-based compositions. Background technique [0002] Curable compositions based on epoxy resins are well known. Such compositions are used as adhesives, coatings, sealants and casting agents. Compositions based on epoxy resins are also used in the electronics industry, for example for the assembly of mobile phones. Epoxy / polythiol-containing compositions are conventionally used as two-part compositions. This is due at least in part to the instability of the one-part composition comprising epoxy resin, polythiol curing agent and liquid (soluble) tertiary amine catalyst. Such one-part compositions of epoxy resin, polythiol, and catalyst mixed at room temperature typically have a working or "pot" life on the order of minutes to hours. These characteristics impose practical limitations on the end use of such compositions. Accordingly, many conventional epoxy / po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/66C08G59/68C08K3/08
CPCC08G59/66C08G59/686C08K2003/0806C08K2003/085C08K2201/001C08K2201/011C08K2201/003C08K5/37C08K3/08C08L63/00C08G59/245C08K3/26C08K3/36C08K2003/265C08K2201/005H01B3/004H01B3/307
Inventor 林影H·萨霍亚尼G·D·乔利
Owner 3M INNOVATIVE PROPERTIES CO