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Hydrophobic flame-retardant epoxy resin and preparation method thereof

An epoxy resin, hydrophobic technology, applied in the field of functional polymer material preparation, can solve the problems of deterioration of mechanical properties, flicker and partial discharge, accelerated aging of epoxy resin, etc., to improve dispersibility and stability, good toughness and strength , the effect of improving the surface contact angle

Active Publication Date: 2018-09-28
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Studies have found that in lightning weather, the residual water on the surface of the epoxy resin is likely to cause flicker and partial discharge, which can accelerate the aging of the epoxy resin, or cause electrical breakdown of the entire epoxy resin component.
In addition, water is also a craze initiator. If the epoxy resin is used in a high humidity environment for a long time, its mechanical properties will also be seriously deteriorated.
Therefore, the existing DOPO type epoxy resin is not suitable for outdoor or humid environment

Method used

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  • Hydrophobic flame-retardant epoxy resin and preparation method thereof
  • Hydrophobic flame-retardant epoxy resin and preparation method thereof
  • Hydrophobic flame-retardant epoxy resin and preparation method thereof

Examples

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preparation example Construction

[0017] A preparation method of hydrophobic flame-retardant epoxy resin:

[0018] (1) Add 0.01–0.1 g of graphene oxide (GO) to 100–500 mL of xylene, and ultrasonicate at room temperature for 1–4 h to prepare a GO dispersion. Add 10-50 g of hydroxy silicone oil (HO-SO-OH) and 0.1-0.5 g of dibutyltin dilaurate (DBTDL) to the above dispersion, and continue ultrasonication at room temperature for 10-30 min. Heat up to 80-100 °C, mechanically stir and react for 6-12 h, the product is filtered, washed with xylene, and vacuum-dried at 60 °C for 24 h to prepare graphene / hydroxy silicone oil hybrid material;

[0019] Its reaction process is as follows:

[0020]

[0021] (2) Add 4-10 g of the hybrid material prepared in step (1), 80-100 g of DOPO epoxy resin, 1-2 g of silane coupling agent KH550 and 0.04-0.1 g of DBTDL into a single-necked Erlenmeyer flask in sequence , vacuum-stirred and reacted at 60-80 ℃ for 2-4 h to obtain uncured graphene / hydroxyl silicone oil / DOPO-type epoxy r...

Embodiment 1

[0032] (1) Add 0.01 g of graphene oxide (GO) into 100 mL of xylene, and ultrasonicate at room temperature for 1 h to prepare a GO dispersion. Add 10 g of hydroxy silicone oil and 0.1 g of dibutyltin dilaurate (DBTDL) to the above dispersion, and continue ultrasonication at room temperature for 10 min. The temperature was raised to 80 °C, mechanically stirred for 12 h, the product was filtered, washed with xylene, and vacuum-dried at 60 °C for 24 h to prepare a graphene / hydroxy silicone oil hybrid material;

[0033] (2) Add 4 g of the hybrid material prepared in step (1), 80 g of DOPO epoxy resin, 1 g of silane coupling agent KH550, and 0.04 g of DBTDL into a single-necked Erlenmeyer flask in turn, and stir under vacuum at 60 °C After reacting for 4 h, an uncured graphene / hydroxyl silicone oil / DOPO type epoxy resin composite was obtained;

[0034] (3) Add 80 g of the compound prepared in step (2), 40 g of phthalic anhydride and 0.3 g of N,N-dimethylbenzylamine into a polytetra...

Embodiment 2

[0036](1) 0.05 g graphene oxide (GO) was added to 300 mL xylene, and ultrasonicated at room temperature for 2 h to prepare a GO dispersion. Add 30 g of hydroxy silicone oil and 0.3 g of dibutyltin dilaurate (DBTDL) to the above dispersion, and continue ultrasonication at room temperature for 20 min. The temperature was raised to 90 °C, mechanically stirred for 9 h, the product was filtered, washed with xylene, and vacuum-dried at 60 °C for 24 h to prepare a graphene / hydroxy silicone oil hybrid material;

[0037] (2) Add 7 g of the hybrid material prepared in step (1), 90 g of DOPO-type epoxy resin, 1.5 g of silane coupling agent KH550 and 0.07 g of DBTDL into a single-necked Erlenmeyer flask, and stir under vacuum at 70 °C After reacting for 3 h, an uncured graphene / hydroxyl silicone oil / DOPO type epoxy resin composite was obtained;

[0038] (3) Add 90 g of the compound prepared in step (2), 50 g of methyltetrahydrophthalic anhydride and 0.4 g of N-benzylpyrazinium hexafluoro...

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Abstract

The invention discloses hydrophobic flame-retardant epoxy resin and a preparation method thereof, and belongs to the technical field of preparation of functional polymer materials. The preparation method comprises the following steps: carrying out chemical bonding to connect hydroxyl silicone oil, graphene and DOPO type epoxy resin by taking the hydroxyl silicone oil as a water repellent agent andtaking the graphene and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) as a fire retardant; and then carrying out curing and preparation to obtain the final product. The obtained epoxy resin has excellent hydrophobicity, fire resistance and mechanical property, the vertical combustion grade reaches V-0 grade, a surface contact angle is increased to be 107.6-117.5 degrees, the stretching strength is 49.5-53.9 MPa, the impacting strength is 6.8-12.6 kJ / m<2>, meanwhile, the hydrophobic flame-retardant epoxy resin has the characteristics of zero poisonousness and environmental protection, can be used in an outdoor or humid severe environment, and is wide in application prospect.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional polymer materials, and in particular relates to a hydrophobic flame-retardant epoxy resin and a preparation method thereof. Background technique [0002] Epoxy resin has good adhesion, mechanical properties, electrical insulation and chemical corrosion resistance, and is widely used in many fields such as electrical and electronic products, transportation equipment, coatings, and adhesives. However, the flame retardancy of ordinary epoxy resin is poor, and there is a serious fire hazard. In order to improve the flame retardancy of epoxy resin, the organophosphorus flame retardant 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) was added to the epoxy resin to prepare A DOPO-type epoxy resin with excellent flame retardancy and low toxicity, even non-toxic. However, the epoxy resin itself is highly polar and does not have hydrophobicity. Adding an organic phosphorus flam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L83/04C08K3/04
Inventor 李宝铭王婷玉王肖利
Owner FUZHOU UNIV
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