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Preparation method of nano Sb2O3@Br-VERs core-shell type composite particles

A composite particle and nanotechnology, which is applied in the preparation of nano-Sb2O3@Br-VERs core-shell composite particles, can solve the problem of reducing the flame retardant performance of polymer matrix composites, increasing smoke emission and harmfulness, and gas phase resistance. It can reduce the combustion efficiency and other problems, and achieve the effect of being beneficial to industrial production, improving compatibility and dispersibility, and improving flame retardant performance.

Pending Publication Date: 2020-04-17
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the disadvantage of this flame retardant method is that the halide antimony compound needs to pass through the flame retardant and Sb 2 o 3 After being volatilized at high temperature, they are captured and generated in the gas phase. Due to the randomness of capture, the flame retardant and Sb 2 o 3 The effective utilization rate of the flame retardant decreases; if the flame retardant and Sb 2 o 3 The uneven time of dispersion in the polymer matrix greatly reduces the efficiency of gas-phase flame retardant and seriously reduces the flame retardant performance of polymer-based composite materials; at the same time, the volatiles that do not participate in the flame retardant reaction will become harmful smoke, increasing the smoke and dust. emissions and harmfulness

Method used

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Examples

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Effect test

preparation example Construction

[0012] The present invention is nano Sb 2 o 3 The preparation method of @Br-VERs core-shell type composite particles, the steps are:

[0013] (1) Using nano antimony trioxide and brominated bisphenol A epoxy vinyl ester resin with an average particle size between 10 and 250nm as raw materials, using toluene or styrene or ethyl acetate or n-butanol as brominated Bisphenol A epoxy vinyl ester resin diluent, the above diluents can be used singly or compounded in any proportion;

[0014] (2) Mix brominated bisphenol A epoxy vinyl ester resin with diluent to form a mixed solution;

[0015] (3) Electromagnetically stir the mixed solution, and add nano antimony trioxide to form a suspension; the temperature of the suspension is 10-60°C, the speed of the electromagnetic stirrer is 1-2600r / min, and the stirring time is more than 2 hours;

[0016] (4) After the electromagnetic stirring is completed, remove the sediment in the suspension, centrifuge, filter and dry it to obtain nano-a...

Embodiment 1

[0022] Measure 100ml of toluene and 15ml of Br-VERs into a 250ml three-neck flask equipped with magnetic stirring, condenser, and thermometer, and set the magnetic stirring speed to 500r / min.

[0023] Take 5g of nano-Sb with a particle size between 50 and 100nm 2 o 3 Add to the three-neck bottle. The reaction temperature in the three-necked flask was set at 35° C., and electromagnetically stirred for 15 hours.

[0024] After electromagnetic stirring for 15 hours, the sediment in the three-neck flask was taken out, and the product was obtained by centrifuging, filtering, and drying. The product was qualitatively and quantitatively analyzed. The product was Br-VERs coated nano-Sb 2 o 3 The core-shell type composite particles, the mass ratio of the shell to the core is roughly 1:4.

Embodiment 2

[0026] Take 100ml of styrene and 15ml of Br-VERs and put them into a 250ml three-neck flask equipped with a magnetic stirrer, a condenser, and a thermometer, and set the rotational speed of the magnetic stirrer to 500r / min.

[0027] Take 5g of nano-Sb with a particle size between 50 and 100nm 2 o 3 Add to the three-neck bottle. The reaction temperature in the three-necked flask was set at 35° C., and electromagnetically stirred for 15 hours.

[0028] After electromagnetic stirring for 15 hours, the sediment in the three-neck flask was taken out, and the product was obtained by centrifuging, filtering, and drying. The product was qualitatively and quantitatively analyzed. The product was Br-VERs coated nano-Sb 2 o 3 The core-shell type composite particles, the mass ratio of the shell to the core is roughly 1:15.

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Abstract

The invention discloses a preparation method of nano Sb2O3@Br-VERs core-shell type composite particles. The preparation method comprises the following steps: (1) taking nano antimonous oxide and a brominated bisphenol A epoxy vinyl ester resin as raw materials, and taking methylbenzene or styrene or ethyl acetate or n-butyl alcohol as a brominated bisphenol A epoxy vinyl ester resin diluent, wherein the diluent can be singly used or compounded according to any proportions; (2) mixing the brominated bisphenol A epoxy vinyl ester resin and the diluent to form a mixed solution; (3) carrying out electromagnetic stirring on the mixed solution, and adding the nano antimonous oxide to form a turbid liquid, wherein the temperature of the turbid liquid is 10-60 DEG C, the rotating speed of an electromagnetic stirrer is 1-2600 r / min, and the stirring time is longer than 2 hours; and (4) after the electromagnetic stirring is finished, fishing out the precipitate in the turbid liquid, centrifuging, filtering, and drying to obtain the nano antimonous oxide@brominated bisphenol A epoxy vinyl ester resin core-shell type composite particles.

Description

technical field [0001] The present invention relates to nanometer Sb 2 o 3 The preparation technology of @Br-VERs core-shell composite particles. The Chinese name of this kind of particles is nano-antimony trioxide@brominated bisphenol A epoxy vinyl ester resin core-shell composite particles. Background technique [0002] Antimony trioxide (Sb 2 o 3 ) As an additive flame retardant synergist, it is often used together with halogen flame retardants such as brominated polystyrene (BPS) and brominated epoxy resin (BEO) to improve the flame retardancy of polymer materials such as plastics and rubber performance, especially when Sb 2 o 3 When the particle size reaches the nanometer level, its flame retardant synergistic effect is more excellent. When nano Sb 2 o 3 Added to the polymer matrix, due to the surface effect of the nanoparticles, not only the Sb 2 o 3 Nanoparticles are prone to agglomeration, and their compatibility with polymer matrix is ​​poor, which will se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/10C08K9/10C08K3/22C08F283/10C08F212/08
CPCC08K9/10C08K3/2279C08F283/105C08K2201/011C08K2201/003C08L2201/02C08L63/10C08F212/08
Inventor 徐建林王涛康成虎牛磊
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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