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A kind of organosilicon-phosphorus hybrid flame-retardant water-based self-emulsifying epoxy resin curing agent and its preparation method and application

An epoxy resin curing and silicone technology, applied in epoxy resin coatings, coatings, fireproof coatings, etc., can solve problems such as low flame retardancy, achieve low cost, good flexibility, ensure long-term stability and The effect of uniformity

Active Publication Date: 2016-06-15
天津道科包装材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a kind of organosilicon-phosphorus hybrid flame-retardant water-based self-emulsifying epoxy resin curing agent, which combines organosilicon and organophosphorus to jointly modify epoxy resin and exert its advantages. The synergistic flame retardant effect of silicon and phosphorus solves the problem of low flame retardancy of epoxy resin in the past, and also improves the flexibility and high temperature heat resistance of epoxy resin

Method used

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  • A kind of organosilicon-phosphorus hybrid flame-retardant water-based self-emulsifying epoxy resin curing agent and its preparation method and application
  • A kind of organosilicon-phosphorus hybrid flame-retardant water-based self-emulsifying epoxy resin curing agent and its preparation method and application

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Embodiment 1

[0031] The present invention is an embodiment of a method for preparing a self-emulsifying curing agent for organosilicon-phosphorous hybrid flame-retardant water-based epoxy resin. The method described in this embodiment includes the following steps:

[0032] a) Synthesis of silicon-phosphorus hybrids: KH560 and DOPO are added to a flask with a reflux condenser, a thermometer and a stirring device in the same amount as the substance, and the catalyst 4-methyl-2-ethylimidazole (amount of 2% of the mass of KH560), after DOPO and 4-methyl-2-ethylimidazole are completely melted in KH560, the temperature is raised and stirred and refluxed for 5-8 hours to obtain a solution or gel-like substance A containing silicon-phosphorus hybrids.

[0033] b) Preparation of nonionic water-based epoxy self-emulsifier: in a 500ml four-necked flask equipped with a nitrogen feed device, a reflux condenser, a thermometer and a mechanical stirrer, add octadecylamine and solvent propylene glycol methy...

Embodiment 2

[0036] The invention relates to the application of a self-emulsifying curing agent of organic silicon phosphorus hybridized flame-retardant water-based epoxy resin in epoxy fire-proof and flame-retardant coating base material.

[0037] At 50°C, pour 10g of bisphenol epoxy resin E-51 and 5g of the curing agent prepared in Example 1 into the paint mixing cup, add deionized water at a temperature of 50-60°C, and stir at high speed until uniform epoxy emulsion, so that its solid content is about 50%, that is, the base material used for fireproof coatings, and other additives, such as pigments, defoamers, fillers, etc., are added to it to prepare epoxy resins that meet the needs of different material surfaces fire retardant coating.

Embodiment 3

[0039] The present invention is an embodiment of a method for preparing a self-emulsifying curing agent for organosilicon-phosphorous hybrid flame-retardant water-based epoxy resin. The method described in this embodiment includes the following steps:

[0040] a) Synthesis of silicon-phosphorus hybrids: with mechanical stirring, condenser and N 2 In the three-necked flask of the device, completely dissolve epoxy resin E-44 in absolute ethanol, add hydroxyl-terminated polydimethylsiloxane and catalyst dibutyltin dilaurate, react for 3 hours, and remove the solvent by rotary evaporation. Raise the temperature to 100°C, add DOPO and its mass fraction of 1% triphenylphosphine, raise the temperature to 120°C for 6 hours, and obtain a gel-like substance A containing a silicon-phosphorus hybrid;

[0041] b) Preparation of nonionic water-based epoxy self-emulsifier: in a 500ml four-necked flask equipped with a nitrogen feed device, a reflux condenser, a thermometer and a mechanical st...

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Abstract

The invention discloses a preparation method of an organic silicon-phosphorus hybrid flame-retardant water-based self-emulsifying epoxy resin curing agent, which comprises the following steps: a) synthesis of silicon-phosphorus hybrid; b) preparation of non-ionic water-based epoxy self-emulsifier; c) Preparation of silicone-phosphorus hybrid flame retardant water-based self-emulsifying epoxy resin curing agent by melt-gel method. The invention also discloses the curing agent and its use in the epoxy fire-retardant coating base material. The curing agent of the present invention has the following advantages: (1) improving the flame retardancy, heat resistance, flexibility, adhesion with the matrix and its mechanical properties of the epoxy resin curing agent; (2) preventing the addition type, resistance (3) The epoxy coating is prepared by using the curing agent, which not only realizes self-emulsification and water-based epoxy resin, but also gives the coating fire resistance, heat resistance, and thermal stability. Flexibility.

Description

technical field [0001] The invention relates to the technical field of epoxy resin materials, in particular to an organosilicon-phosphorus hybrid flame-retardant water-based self-emulsifying epoxy resin curing agent and its preparation method and application. Background technique [0002] With the development of material science, epoxy resin and its coating are widely used in electronic appliances (such as copper clad laminates, electronic packaging materials), transportation industry (such as mobile phone casing, aircraft industry) and construction because of their good physical and chemical properties. (such as epoxy functional coatings on the surface of steel structures) and other fields, however, the flammability of most epoxy resin materials in the air (its limiting oxygen index LOI is all lower than 22%) makes it extremely dangerous during use. Therefore, how to improve the flame retardancy of epoxy resin materials has become an urgent problem to be solved. [0003] H...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G59/50C08G59/14C09D163/02C09D5/18
Inventor 肖定书刘国聪李浩李险峰梁浩
Owner 天津道科包装材料有限公司
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