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A kind of nanometer boron phosphate catalyzes charcoal flame retardant epoxy resin and preparation method thereof

A technology of epoxy resin and boron phosphate, which is applied in the field of flame retardant materials to achieve the effects of high flame retardant efficiency, low price and adjustable chemical composition

Inactive Publication Date: 2017-10-13
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned research papers or invention patents used or prepared only stoichiometric BP, and were not used to catalyze charcoal flame-retardant epoxy resin

Method used

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  • A kind of nanometer boron phosphate catalyzes charcoal flame retardant epoxy resin and preparation method thereof
  • A kind of nanometer boron phosphate catalyzes charcoal flame retardant epoxy resin and preparation method thereof
  • A kind of nanometer boron phosphate catalyzes charcoal flame retardant epoxy resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of nanometer boron phosphate is catalyzed into charcoal flame-retardant epoxy resin, taking described epoxy resin total mass (300g) as 100%, each component and its mass percentage are as follows:

[0038] E44 84.5%,

[0039] m-PDA 10.5%,

[0040] nano-BP 1.27 (The atomic molar ratio of boron to phosphorus is 1.27) 5.0%,

[0041] A preparation method of nano-boron phosphate catalyzed into charcoal and flame-retardant epoxy resin as described in this embodiment, the specific steps of the method are as follows:

[0042] (1) Add boric acid (1.25mol) and phosphoric acid (1mol) into a beaker, stir at 110°C for 25min, and keep warm for 4h to obtain white solid 1; put white solid 1 in a tube furnace, and adjust the heating rate to 5°C / min, heated up to 500°C, calcined for 8h, cooled with the furnace, washed 3 times, and dried in vacuum to obtain solid acid nano boron phosphate white powder with a particle size of about 40-60nm (such as figure 1 Shown), the actual at...

Embodiment 2

[0048] A kind of nanometer boron phosphate is catalyzed into charcoal flame-retardant epoxy resin, taking described epoxy resin total mass (300g) as 100%, each component and its mass percentage are as follows:

[0049] E44 84.5%,

[0050] m-PDA 10.5%,

[0051] nano-BP 1.06 (The atomic molar ratio of boron to phosphorus is 1.06) 5.0%,

[0052] A preparation method of nano-boron phosphate catalyzed into charcoal and flame-retardant epoxy resin as described in this embodiment, the specific steps of the method are as follows:

[0053] (1) Add boric acid (1mol) and phosphoric acid (1mol) into a beaker, stir at 120°C for 35min, and keep warm for 5h to obtain a white solid 1; put the white solid 1 in a tube furnace, and adjust the heating rate to 8°C / min, heated up to 700°C, calcined for 12 hours, cooled with the furnace, washed 5 times, and dried in vacuum to obtain solid acid nano boron phosphate white powder with a particle size of about 60-80nm (such as figure 2 Shown), the...

Embodiment 3

[0059] A kind of nanometer boron phosphate is catalyzed into charcoal flame-retardant epoxy resin, taking described epoxy resin total mass (300g) as 100%, each component and its mass percentage are as follows:

[0060] E44 84.5%,

[0061] m-PDA 10.5%,

[0062] nano-BP 0.84 (The atomic molar ratio of boron to phosphorus is 0.84) 5.0%,

[0063] A preparation method of nano-boron phosphate catalyzed into charcoal and flame-retardant epoxy resin as described in this embodiment, the specific steps of the method are as follows:

[0064] (1) Add boric acid (0.8mol) and phosphoric acid (1mol) into a beaker, stir at 115°C for 30min, and keep warm for 4.5h to obtain a white solid 1; put the white solid 1 in a tube furnace, and adjust the heating rate to 7 °C / min, heat up to 600 °C, calcined for 10 h, cooled with the furnace, washed 4 times, and dried in vacuum to obtain solid acid nano boron phosphate white powder with a particle size of about 40-80 nm (such as image 3 Shown), the ...

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Abstract

The invention discloses a nano boron phosphate catalyzed charcoal flame retardant epoxy resin and a preparation method thereof, belonging to the technical field of flame retardant materials. The epoxy resin is mainly composed of an epoxy resin monomer, a curing agent and a catalytic carbon-forming flame retardant. Add boric acid and phosphoric acid into the reactor, stir at 110-120°C for 25-35min, keep warm for 4-5h to obtain white solid 1; calcinate white solid 1 at 500-700°C for 8-12h, wash 3-5 times , dried in vacuum to obtain solid acid nano boron phosphate; add the ethanol dispersion of solid acid nano boron phosphate into the epoxy resin monomer, stir and disperse evenly, add curing agent after vacuum removal of ethanol, remove air, and solidify to obtain the obtained Said nano boron phosphate catalyzed into charcoal flame retardant epoxy resin. The epoxy resin has less addition of flame retardant, high flame retardant efficiency, low smoke production and environmental friendliness; the method has simple preparation process and low cost.

Description

technical field [0001] The invention relates to a nano-boron phosphate catalyzed charcoal-forming flame-retardant epoxy resin and a preparation method thereof, and belongs to the technical field of flame-retardant materials. Background technique [0002] Epoxy resin (EP) is an important class of thermosetting polymer materials, which are widely used in electronics, construction, aerospace, shipping and other fields due to their excellent mechanical properties, electrical properties and adhesive properties. base resin material. However, not only the flammability of EP limits its application (the oxygen index of pure epoxy resin is 26.8%, and the vertical burning test rating is UL 94 no grade), but the traditional flame retardant tetrabromobisphenol used for EP flame retardancy A. Due to the possible harm to human body and environment, it has been included in the list of substances of concern, and the risk assessment is being carried out worldwide. Therefore, it is very nece...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08K3/38C08G59/50
Inventor 郝建薇阳运国王义亮周友
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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