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Clean, flame-retardant and smoke-suppressing epoxy resin nanocomposite material and preparation method thereof

A nano-composite material and epoxy resin technology, applied in the field of new materials, can solve the problems of smoke suppression and poor mechanical properties, and achieve the effects of good smoke suppression performance, improved flame retardant performance, and high flame retardant efficiency.

Active Publication Date: 2019-12-13
STATE GRID JIANGSU ELECTRIC POWER CO ZHENJIANG POWER SUPPLY CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the existing flame-retardant epoxy resin composite materials containing toxic elements such as halogen and poor smoke suppression and mechanical properties, the present invention proposes a halogen-free K 2 co 3 (P 2 o 7 ) 2 2H 2 As a clean flame retardant, O nanomaterials have the characteristics of clean and pollution-free, good flame retardancy and smoke suppression performance

Method used

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  • Clean, flame-retardant and smoke-suppressing epoxy resin nanocomposite material and preparation method thereof
  • Clean, flame-retardant and smoke-suppressing epoxy resin nanocomposite material and preparation method thereof
  • Clean, flame-retardant and smoke-suppressing epoxy resin nanocomposite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] During the experiment, 0.249 g of cobalt acetate, 0.384 g of potassium pyrophosphate and 3.730 g of potassium chloride were mixed with 15 mL of deionized water. Stir at room temperature for 30 min. Then the mixture was transferred into a tetrafluoroethylene-lined autoclave with a capacity of 50 mL, sealed and heated at 120 °C for 4 hours, washed with deionized water for several times, and then dried at 60 °C for 12 hours, the obtained product was Potassium cobalt pyrophosphate (CPP).

[0036] In the epoxy resin, adding mass fraction is 1, 2, 4, 6, 8, 10 and 12wt% K 2 co 3 (P 2 o 7 ) 2 2H 2 O nanomaterials, in order to achieve a better dispersion state, first disperse CPP in acetone, ultrasonically disperse for 30 minutes until there is no precipitation at the bottom of the beaker, then add epoxy resin to the above solution, continue ultrasonically dispersing for 30 minutes, and then disperse at 90°C Remove the acetone until a homogeneous system is formed, then ad...

Embodiment 2

[0056] The difference from Example 1 is that, according to epoxy resin (Epoxy NPEL128 and DDM are 4:1 by mass ratio) and K 2 co 3 (P 2 o 7 ) 2 2H 2 The mass ratio of O nanomaterials is 100:0, Epoxy NPEL128 and DDM are evenly mixed, and solidified to prepare pure EP. Basic parameters of flame retardant and smoke suppression: UL94 test is not yet flame retardant, there is dripping, the oxygen index is 25.8, and the peak heat release rate is 1073.0kW / m 2 , the total heat release is 92.5MJ / m 2 , the peak smoke release rate is 0.33m 2 / s, the total smoke emission is 24.8m 2 .

Embodiment 3

[0058] The difference from Example 1 is that, according to epoxy resin (Epoxy NPEL128 and DDM are 4:1 by mass ratio) and K 2 co 3 (P 2 o 7 ) 2 2H 2 O nanomaterial mass ratio is 99:1, Epoxy NPEL128, K 2 co 3 (P 2 o 7 ) 2 2H 2 O and DDM were uniformly mixed and solidified to prepare EP / 1wt%CPP nanocomposite. Compared with pure EP, the flame retardant and smoke suppression properties of the obtained composite materials are improved. The basic parameters: UL94 test shows no flame retardant grade, there is dripping phenomenon, the oxygen index is increased to 27.2, and the peak heat release rate is reduced to 983.6kW / m 2 , the total heat release is reduced to 84.6MJ / m 2 , the peak value of smoke release rate is reduced to 0.28m 2 / s, the total smoke emission is reduced to 23.6m 2 .

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Abstract

The invention discloses a clean, flame-retardant and smoke-suppressing epoxy resin nanocomposite material and a preparation method thereof. The clean, flame-retardant and smoke-suppressing epoxy resinnanocomposite material is prepared by compounding a K2Co3(P2O7)2.2H2O nanomaterial flame retardant, an epoxy monomer, 4,4'-diaminodiphenylmethane, a curing agent and a curing agent. The epoxy resin nanocomposite material comprises, by mass, 1-12 wt% of the K2Co3(P2O7)2.2H2O nanomaterial, with the balance being a mixture of the epoxy monomer and 4,4'-diaminodiphenylmethane, wherein a mass ratio ofthe epoxy monomer to the 4,4'-diaminodiphenylmethane is 4: 1. Directed at the problems that conventional flame-retardant epoxy resin composite materials contain toxic elements such as halogen and ispoor in smoke suppression and mechanical performance, the invention provides the halogen-free K2Co3(P2O7)2.2H2O nanomaterial serving as a clean flame retardant, and the characteristics of cleanness,no pollution and good flame retardance and smoke suppression performance are obtained.

Description

technical field [0001] The invention relates to a clean flame-retardant and smoke-suppressing epoxy resin nanocomposite material and a preparation method thereof, belonging to the technical field of new materials. Background technique [0002] Epoxy resin (EP) is a typical thermosetting polymer with excellent heat resistance, mechanical properties, electrical insulation and chemical stability, as well as low shrinkage, easy processing and low cost, etc. It has been widely used in high-tech fields such as electrical appliances, architectural coatings, transportation, aerospace, and composite materials [Compos.Sci.Technol., 2019, 182, 107748; J.Inorg.Mater., 2019, 34, 761.] . Since 2008, the global output of epoxy resin has been increasing year by year, with an average annual growth rate of about 4.0%. In 2018, the total demand for epoxy resin in my country was 1.512 million tons, of which the total demand for coatings was 709,100 tons, and the demand for electronic appliance...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K3/32C08G59/50
CPCC08G59/5033C08K3/32C08K2201/011C08L2201/02C08L63/00
Inventor 桑雷陈永明杨茹张立柱吴宁
Owner STATE GRID JIANGSU ELECTRIC POWER CO ZHENJIANG POWER SUPPLY CO
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