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A kind of halogen-free flame-retardant epoxy system and preparation method thereof

A technology of epoxy system and flame retardant, which is applied in the field of preparation of halogen-free flame retardant epoxy resin, can solve the problems of decreased mechanical properties, increased viscosity of formula system, and affecting processing performance, etc., and achieves reduced dosage and glass transition temperature High, good flame retardant performance

Active Publication Date: 2019-04-02
ZIYUAN COUNTY TIANSHENG NEW MATERIAL DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Achieving this strategy requires the addition of a large amount of inorganic fillers, which increases the viscosity of the formulation system and affects the processing performance, and the high-filler epoxy resin formulation system makes its mechanical properties drop sharply

Method used

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  • A kind of halogen-free flame-retardant epoxy system and preparation method thereof
  • A kind of halogen-free flame-retardant epoxy system and preparation method thereof
  • A kind of halogen-free flame-retardant epoxy system and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] 70 parts by mass of DOPO-HQ (10-(2,5-dihydroxyphenyl)-10-hydrogen-9-oxa-10-phosphaphenanthrene-10-oxide) and 30 parts by mass of 2,4-toluene Diisocyanates were mixed and reacted at a temperature of 100° C. for 1 hour to prepare a hydroxyl-terminated polyurethane prepolymer, which was then cooled to normal temperature. Add 10 parts by mass of the above reactant to 90 parts by mass of epoxy resin, add 30 parts by mass of sodium methoxide methanol solution with a mass fraction of 0.01% as a catalyst, and react at 160° C. for 2 hours. After cooling to room temperature, 90 parts by mass of the above reactant and 10 parts by mass of polyether polyol (GE 204) were uniformly mixed to obtain a halogen-free flame-retardant modified epoxy resin.

[0064] Under vacuum conditions, 35 parts by mass of DOPO-HQ (10-(2,5-dihydroxyphenyl)-10-hydrogen-9-oxa-10-phosphaphenanthrene-10-oxide) and 65 parts by mass Tetrahydrophthalic anhydride was reacted at 160°C for 2 hours. Cool to 80°C a...

Embodiment 2

[0068] Mix 60 parts by mass of melamine with 40 parts by mass of 2,4-toluene diisocyanate, react at a temperature of 100° C. for 1 hour to prepare an amino-terminated polyurethane prepolymer, and cool to normal temperature. Add 15 parts by mass of the above-mentioned reactant to 85 parts by mass of epoxy resin, add 0.01% of 2-phenylimidazole as a catalyst, and react at 160° C. for 2 hours. Add 12% dodecyl to myristyl glycidyl ether (AGE) by weight of the above-mentioned reactants, cool to normal temperature for use, and prepare halogen-free flame-retardant epoxy resin.

[0069] Dissolve 15 parts by mass of melamine cyanurate (MCA) in 85 parts by mass of methyltetrahydrophthalic anhydride at 100°C, add an imidazole accelerator system at 60°C, and cool to room temperature for use. Preparation of halogen-free flame retardant epoxy curing agent.

[0070] At normal temperature, 60 parts by mass of 400-mesh active quartz powder and 40 parts by mass of 600-mesh aluminum hydroxide po...

Embodiment 3

[0074] Mix 65 parts by mass of phosphonate oligomer (CAS 68664-06-2) with 35 parts by mass of 2,4-toluene diisocyanate and react at a temperature of 100°C for 1 hour to prepare a phenolic-terminated polyurethane prepolymer , cooled to room temperature. Add 10 parts by mass of the above-mentioned reactant to 95 parts by mass of epoxy resin, add 0.01% of 2-phenylimidazole as a catalyst, and react at 150° C. for 2 hours. After cooling to room temperature, 90 parts by mass of the above-mentioned reactant and 10 parts by mass of polypropylene glycol diglycidyl ether (PPGDGE) were uniformly mixed to prepare a halogen-free flame-retardant modified epoxy resin.

[0075] Dissolve 10 parts by mass of butylated melamine formaldehyde resin in 90 parts by mass of methyltetrahydrophthalic anhydride at 100°C, add an imidazole accelerator system at 60°C, and cool to room temperature for use.

[0076] At normal temperature, 90 parts by mass of 400-mesh active quartz powder and 10 parts by mas...

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Abstract

The invention provides a preparation method for a halogen-free flame retardant epoxy system. A hydroxy or amino-containing halogen-free flame retardant is used for respectively modifying epoxy resin and anhydride curing agent. The preparation method is simple in preparation process; low cost, excellent physical properties and processing properties are considered; the preparation method is suitable for bonding and packaging of electron components, a traditional pouring technology and an automatic pressure gel (APG) process for a main insulating material of electrical equipment; the prepared halogen-free flame retardant epoxy resin UL 94-V0 is flame-retardant for the thickness above 1.5mm.

Description

technical field [0001] The invention relates to the field of preparation of a halogen-free flame-retardant epoxy resin, in particular to a halogen-free flame-retardant epoxy system and a preparation method thereof. Background technique [0002] Epoxy resin is widely used in the bonding and packaging of electronic components and the main insulation material of electrical equipment because of its advantages such as good insulation, adhesion, good mechanical properties, molding process performance and relatively low cost. . However, flammable epoxy resin is used in the main insulation of electrical equipment, the packaging of electronic components and the substrate of printed circuit boards, and there is a huge fire hazard. For this reason, the scientific community has done a lot of basic research work on the flame retardant properties of epoxy resin [1-3], and some technologies have been applied in production practice. The flame retardant research and practice of epoxy resin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L71/02C08K3/36C08K3/22C08K5/3492C08G59/42C08G59/62C08G59/50
CPCC08G59/4238C08G59/5086C08G59/62C08G59/621C08K3/22C08K3/36C08K2003/2227C08L63/00C08L2201/02C08L2201/22C08L2203/20C08L2203/206C08L2205/02C08L71/02C08K2003/2224C08K5/34928
Inventor 莫海林杨国俊
Owner ZIYUAN COUNTY TIANSHENG NEW MATERIAL DEV
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