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Reaction-type flame-retardant epoxy resin microcapsule and preparation method thereof

A reactive flame retardant and epoxy resin technology, used in microcapsule preparation, microsphere preparation, etc., can solve problems such as low flame retardancy, achieve good compatibility, ensure safety in use, and prolong service life.

Active Publication Date: 2014-12-24
广东润昌南星新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a reactive flame retardant epoxy resin microcapsule, which solves the problem of low flame retardancy of epoxy resin in the past, and also improves the flexibility of epoxy resin and high temperature resistance

Method used

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  • Reaction-type flame-retardant epoxy resin microcapsule and preparation method thereof
  • Reaction-type flame-retardant epoxy resin microcapsule and preparation method thereof
  • Reaction-type flame-retardant epoxy resin microcapsule and preparation method thereof

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Embodiment 1

[0042] The present invention is an embodiment of a method for preparing reactive flame-retardant epoxy resin microcapsules. The method described in this embodiment includes the following steps:

[0043] (1) Dissolve 15 g of styrene-maleic anhydride copolymer sodium salt in 500 g of deionized water, and add 20 g of the core material phosphorus-containing epoxy resin (its structure is as formula (I)) and wall material in sequence under homogeneous stirring. 10g of E-51 epoxy acrylate, 10g of phosphorous acrylate (its structure is as formula (Ⅴ)), 8g of SVS, 0.5g of trimethylolpropane trimethacrylate and 2-hydroxy-2-methyl-phenyl A mixture of 0.2g of acetone, emulsified for 10min, to obtain an oil-in-water emulsion;

[0044] (2) The oil-in-water emulsion gained in the step (1) is irradiated with ultraviolet light (power 1500w, lamp distance 10cm) for 10min immediately, so that the surface of the oil-in-water is solidified to form a film;

[0045] (3) Transfer the suspension cure...

Embodiment 2

[0047] The present invention is an embodiment of a method for preparing reactive flame-retardant epoxy resin microcapsules. The method described in this embodiment includes the following steps:

[0048] (1) Dissolve 20g of gelatin in 500g of deionized water, add 25g of core material phosphorus-containing epoxy resin (its structure is as formula (II)) and 12g of wall material E-711 epoxy acrylate, A mixture of 10 g of phosphorus-containing acrylate (its structure is as in formula (Ⅴ)), 10 g of HPMAS, 0.5 g of pentaerythritol triacrylate and 0.2 g of 1-hydroxycyclohexyl phenyl ketone was emulsified for 10 minutes to obtain an oil-in-water emulsion;

[0049] (2) The oil-in-water emulsion gained in the step (1) is irradiated with ultraviolet light (power 1500w, lamp distance 10cm) for 10min immediately, so that the surface of the oil-in-water is solidified to form a film;

[0050] (3) Transfer the suspension cured by ultraviolet light into 1000ml water for sedimentation, pour out ...

Embodiment 3

[0052] The present invention is an embodiment of a method for preparing reactive flame-retardant epoxy resin microcapsules. The method described in this embodiment includes the following steps:

[0053] (1) Dissolve 15g of sodium dodecylbenzenesulfonate in 500g of deionized water, and add 30g of core material phosphorus-containing epoxy resin (its structure is as formula (Ⅲ)) and wall material E- 51 15g of epoxy acrylate, 10g of phosphorous acrylate (its structure is as (Ⅴ)), 10g of AMPS-Na, 0.5g of tetraethylene glycol dimethacrylate and 0.2g of 2-hydroxy-2-methyl-phenylacetone g of the mixture, emulsified for 10min to obtain an oil-in-water emulsion;

[0054] (2) The oil-in-water emulsion gained in the step (1) is irradiated with ultraviolet light (power 1500w, lamp distance 10cm) for 10min immediately, so that the surface of the oil-in-water is solidified to form a film;

[0055] (3) Transfer the suspension cured by ultraviolet light into 1000ml water for sedimentation, po...

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Abstract

The invention discloses a reaction-type flame-retardant epoxy resin microcapsule. The reaction-type flame-retardant epoxy resin microcapsule comprises a capsule core and a capsule wall, wherein the capsule core is 30 to 70 percent by mass of phosphorus-containing epoxy resin, and the capsule wall consists of the following ingredients by mass percent: 15 to 55 percent of phosphorus-containing acrylate, 15 to 45 percent of epoxy acrylate, 10 to 50 percent of a polymerizable emulsifier, 0.5 to 3 percent of an acrylate crosslink agent and 0.1 to 0.5 percent of a photoinitiator. The invention also discloses a method for preparing the microcapsule. The microcapsule has the following advantages that the flame resistance and self-repairing function are good, so that the microcapsule can be widely applied to the fields such as thermosetting self-repairing resin-based composite materials and coatings. The method for preparing the microcapsule adopts an ultraviolet interface in-situ polymerization method, so that not only is the process simple and less time consumed, but also the method is controllable, the safety of the prepared composite material can be improved, and the service life of the composite material can be prolonged.

Description

technical field [0001] The invention relates to the technical field of microcapsule preparation, in particular to a reactive flame-retardant epoxy resin microcapsule and a preparation method thereof. Background technique [0002] Epoxy resins are widely used in various industrial fields, such as electronic equipment, adhesives, coatings, laminates, semiconductor packaging and insulating materials, due to their excellent comprehensive properties such as heat resistance, mechanical properties and processing properties. However, its flame retardancy is poor (its limiting oxygen index is generally only 19.8), and it cannot meet the requirements of high flame retardancy for electronic appliances, steel structure surface coatings, etc. Microcracks or silver crazes occur on the surface and inside of the oxygen material, resulting in deterioration of the structural properties of the material. Therefore, improving the flame retardancy, toughness and effective repair of microcracks o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/16B01J13/18C08F283/10C08F230/02C08F2/48C08F2/26C08F2/30
Inventor 肖定书李浩刘国聪李险峰张喜斌彭忠利
Owner 广东润昌南星新材料有限公司
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