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Microcapsule flame-retardant adsorption resin and preparation method thereof, and flame-retardant composite material

A flame retardant composite material and resin adsorption technology, applied in the field of flame retardants, can solve the problems of easy cracking, affecting the use of flame retardants, etc., to improve migration resistance, inhibit precipitation and migration, improve processing performance and performance Effect

Active Publication Date: 2012-06-13
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although microencapsulation of flame retardants can slow down the migration of flame retardants to the surface of the polymer matrix, since the flame retardants inside the microcapsule flame retardants are not effectively bound, especially after the capsules are broken, the flame retardants still remain Will migrate to the surface of the polymer matrix
Especially for microcapsule flame retardants prepared from liquid flame retardants, they are easily broken during processing, which affects the use of flame retardants

Method used

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  • Microcapsule flame-retardant adsorption resin and preparation method thereof, and flame-retardant composite material
  • Microcapsule flame-retardant adsorption resin and preparation method thereof, and flame-retardant composite material
  • Microcapsule flame-retardant adsorption resin and preparation method thereof, and flame-retardant composite material

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preparation example Construction

[0043] The present invention also provides a preparation method of microcapsule flame retardant adsorption resin, comprising the following steps:

[0044] The adsorption resin absorbs the flame retardant in the flame retardant or the flame retardant solution to obtain the flame retardant adsorption resin;

[0045] The flame retardant adsorption resin is mixed with the capsule wall material in the solution, and the microcapsule flame retardant adsorption resin is obtained after reaction.

[0046]In the present invention, firstly, the adsorption resin is mixed with the flame retardant solution, so that the flame retardant molecules enter into the adsorption resin. The temperature for the adsorption resin to adsorb the flame retardant is preferably 10°C-200°C, more preferably 30°C-90°C; the time is preferably 20min-90min, more preferably 30min-80min. The flame retardant adsorbing resin can be obtained after drying the adsorbing resin adsorbed with the flame retardant according t...

Embodiment 1

[0057] Put 68g of cyclohexane, 31.5g of a mixture of lauryl acrylate and stearyl acrylate with a mass ratio of 1:1, and a mixture of ethylene glycol diacrylate and divinylbenzene with a mass ratio of 1:1 of 0.5g In the irradiation device, use 40KHz ultrasonic dispersion for 15min, pass high-purity nitrogen gas for 10min, seal it, place it in a 60Co radiation source, and irradiate it for 5h at a dose rate of 50Gy / min, and bake the obtained product at 90°C drying to constant weight to obtain an oil-absorbing resin; pulverizing the oil-absorbing resin into particles with a particle size of 5 μm to 600 μm;

[0058] Add 1 g of the oil-absorbing resin prepared above to 10 g of liquid flame retardant tris(2-chloropropyl) phosphate (TCPP), and heat at 40°C for 20 minutes until the flame retardant completely penetrates into the oil-absorbing resin powder to obtain a flame retardant Burn oil-absorbing resin gel and dry it into powder;

[0059] Add 11g of the flame-retardant oil-absorbi...

Embodiment 2

[0072] 65g of a mixture of n-hexane and n-heptane with a mass ratio of 1:1, 34.8g of a mixture of dodecyl acrylate and butyl acrylate with a mass ratio of 1:1, and 0.2g of ethylene glycol diacrylate with a mass ratio of 1:1 The mixture of acrylate and divinylbenzene is placed in the irradiation device, dispersed by ultrasonic wave at 40KHz for 10 minutes, sealed with high-purity nitrogen gas for 10 minutes, placed in a 60Co radiation source, and irradiated for 4 hours at a dose rate of 40Gy / min. drying the obtained product at 80°C to constant weight to obtain an oil-absorbing resin; pulverizing the oil-absorbing resin into particles with a particle size of 20 μm to 500 μm;

[0073] Add 10 g of the above-prepared oil-absorbing resin to 100 g of an ether solution containing 30% triphenyl phosphate, and heat at 55° C. for 20 minutes until the flame retardant completely penetrates into the oil-absorbing resin powder to obtain a flame-retardant oil-absorbing resin gel. dried into p...

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Abstract

The invention provides microcapsule flame-retardant adsorption resin comprising a reservoir wall and a capsule core, wherein the capsule core comprises adsorption resin and flame retardant adsorbed in the adsorption resin. The invention further provides a preparation method of the microcapsule flame-retardant adsorption resin and a flame-retardant composite material. The higher strength adsorption resin with a three dimensional lattice structure is adopted as a support material; the flame retardant or a solution of the flame retardant is adsorbed into resin granules through hydrogen bonding or intermolecular force; and adsorbed flame retardant molecules, in particular to small flame retardant molecules, are very hard to separate out of the adsorption resin owing to the hydrogen bonding orthe intermolecular force, so as to effectively restrain the flame retardant from surface migration. Meanwhile, after microencapsulation of the adsorption resin with the flame retardant, the reservoirwall can further restrain the flame retardant molecules from separation and migration, so as to improve the migration resistance of the microcapsule flame-retardant adsorption resin.

Description

technical field [0001] The invention belongs to the technical field of flame retardants, and in particular relates to a microcapsule flame retardant adsorption resin, a preparation method thereof and a flame retardant composite material. Background technique [0002] Flame retardant, also known as flame retardant, fire retardant or fireproofing agent, is an additive that can improve the flame retardancy of materials, prevent materials from being ignited and inhibit flame propagation. Flame retardants can be used for fire protection of plastics, rubber, fibers, wood, paper products, coatings, adhesives and other materials, and are widely used in building materials, household appliances, electronic devices, interior design, clothing, food, housing and transportation, etc. It plays a vital role in improving people's quality of life and protecting the safety of people's lives and property. [0003] Polymer material is a very important material. It has achieved great development...

Claims

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Application Information

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IPC IPC(8): C08K9/12C08K9/10C08K5/521C08K5/523C08K5/136C08K5/3492C08K3/32C08K5/02B01J13/02C08L25/06C08L27/06C08L63/00C08L77/02C08L67/02C08L75/04
Inventor 胡源唐刚宋磊
Owner UNIV OF SCI & TECH OF CHINA
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