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Curing agent with latency for quick thermal curing of acrylic resin

A latent curing agent, acrylic resin technology, used in the field of curing agents, can solve the problems of high curing temperature, no latent, long time, etc., to achieve improved thermal curing efficiency, good latent, curing cross-linking speed and cross-linking speed. The effect of increasing the connection rate

Inactive Publication Date: 2018-12-11
简兵 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem mainly solved by the present invention is: the existing acrylic resin thermosetting agent does not have latent property, and the required curing temperature is higher and the time is longer

Method used

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  • Curing agent with latency for quick thermal curing of acrylic resin

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Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: the latent curing agent of rapid thermal curing acrylic resin of the present embodiment, by weight, is made up of following material: epoxy resin 60kg, nano titanium dioxide 3kg, p-toluenesulfonyl isocyanate 2kg, dehydrated alcohol 100 kg.

[0033] Prepare as follows:

[0034] (1) Mix 30kg of epoxy resin with 3kg of nano-titanium dioxide and 50kg of absolute ethanol evenly, and set aside;

[0035] (2) Add 30kg of epoxy resin and 50kg of absolute ethanol to the reaction kettle, adjust the rotation speed to 300 rpm, and mix well;

[0036] (3) Add 2kg p-toluenesulfonyl isocyanate into the reaction kettle, adjust the rotation speed to 500 rpm, and mix and stir for 15-20 minutes;

[0037] (4) Slowly drop the mixture of step (1) into the reactor, and continue to stir for 15-20 minutes after the drop is completed;

[0038] (5) Turn on the condensing device of the reactor, and perform condensing and reflux treatment for 120 minutes;

[0039] (6) Turn on the hig...

Embodiment 2

[0040] Embodiment 2: the rapid thermal curing acrylic resin latent curing agent of the present embodiment, by weight, is made up of following material: epoxy resin 80kg, nano-titanium dioxide 5kg, hexamethylene diisocyanate 4kg, dehydrated alcohol 120 kg .

[0041] Prepare as follows:

[0042] (1) Mix 40kg of epoxy resin with 5kg of nano-titanium dioxide and 50kg of absolute ethanol evenly, and set aside;

[0043] (2) Add 40kg epoxy resin and 60kg absolute ethanol to the reaction kettle, adjust the rotation speed to 300 rpm, and mix well;

[0044] Steps (3)-(6) are carried out with reference to steps (3)-(6) in Example 1.

Embodiment 3

[0046] The rapid heat-curing acrylic resin latent curing agent of the present embodiment is composed of the following materials in parts by weight: epoxy resin 100kg, nano-titanium dioxide 20kg, n-butyl isocyanate 6kg, and dehydrated alcohol 150 kg.

[0047] Prepare as follows:

[0048] (1) Mix 50kg of epoxy resin with 20kg of nano-titanium dioxide and 75kg of absolute ethanol, and set aside;

[0049] (2) Add 50kg of epoxy resin and 75kg of absolute ethanol to the reaction kettle, adjust the rotation speed to 300 rpm, and mix well;

[0050] Steps (3)-(6) are carried out with reference to steps (3)-(6) in Example 1.

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Abstract

The invention discloses a curing agent with latency for quick thermal curing of acrylic resin. The curing agent is prepared from the following materials in parts by weight: 60 to 150 parts of epoxy resin, 3 to 50 parts of nanometer titanium dioxide, 2 to 10 parts of isocyanate compound, and 100 to 200 parts of anhydrous ethyl alcohol. The curing agent has the advantages that when the acrylic resinis thermally cured, the complete curing can be realized after treating for 6min at the temperature of 120 DEG C, and the thermal curing efficiency of the acrylic resin is greatly improved; the curingagent and the acrylic resin can be stored together under the sealing and high-temperature conditions, the chemical and physical properties are not changed within 6 months, and the latency is good.

Description

technical field [0001] The invention relates to the field of curing agents, in particular to a latent curing agent for rapid thermal curing acrylic resin. Background technique [0002] Acrylic resin can be cured from a solution state to a solid state in a specific environment when it coexists with a curing agent, so acrylic resin is used in adhesives, coatings, molds or as a carrier for conductive materials. Typically, the curing conditions for acrylic resins are UV curing or heat curing. UV fixation is not suitable for curing with larger volumes because it does not have a good penetration into the interior of the substance. Heat fixing, on the other hand, ensures uniform curing. When using the existing acrylic thermal curing agent for curing, it is often necessary to heat the curing temperature to above 200° C., and it needs to be cured for more than 30 minutes to achieve a good curing effect. In addition, the latent performance of the existing acrylic resin curing agent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/58C08G18/71C08G18/73C08K3/22
CPCC08G18/58C08G18/71C08G18/715C08G18/73C08K3/22C08K2003/2241C08K2201/011
Inventor 汪旦丁简昕格
Owner 简兵
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