Preparation method of flame-retardant low-smoke polystyrene composite

A technology of polystyrene and composite materials, applied in the field of polystyrene, can solve the problems of poor flame retardancy of polystyrene, achieve the effects of improving flame retardancy, reducing production costs, and strengthening interface bonding

Inactive Publication Date: 2015-11-18
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a flame-retardant low-smoke polystyrene composite material to overcome the problem of poor flame-retardant performance of polystyrene in the prior art

Method used

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  • Preparation method of flame-retardant low-smoke polystyrene composite

Examples

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Embodiment 1

[0024] A method for preparing a flame-retardant low-smoke polystyrene composite material, comprising the following steps: Step 1: Take styrene and a dispersant with a volume ratio of 1:0.2 in sequence, and weigh the ratio of the weight to the volume of styrene to be 0.025g : 1 mL of benzoyl peroxide, the ratio of weight to volume of styrene is 0.4 g: 1 mL of bis(2,3-dibromopropyl) fumarate, styrene, dispersant, benzene peroxide After mixing formyl and bis(2,3-dibromopropyl)fumarate, stir at room temperature for 30 minutes, then heat and stir in a water bath at 85°C for 2 hours, filter and dry to obtain polystyrene barrier Burn the substrate and keep it for later use; stir at room temperature for 30 minutes before heating up, and keep the stirring speed constant throughout the reaction to avoid incomplete reaction.

[0025] Step 2. According to the volume ratio of 1:4:0.03, weigh ethanol, water and divinylbenzene and mix them sequentially to prepare a mixed solution A, and add ...

Embodiment 2

[0032] A method for preparing a flame-retardant low-smoke polystyrene composite material, comprising the following steps: Step 1: Take styrene and a dispersant with a volume ratio of 1:0.2 in sequence, and weigh the ratio of the weight to the volume of styrene to be 0.025g : 1 mL of benzoyl peroxide, the ratio of weight to styrene volume is 0.4 g: 1 mL of bis(2,3-dibromopropyl) fumarate, styrene, dispersant, benzene peroxide After mixing formyl and bis(2,3-dibromopropyl)fumarate, stir at room temperature for 30 minutes, then heat and stir in a water bath at 90°C for 1.5 hours, filter and dry to obtain polystyrene Flame retardant matrix, spare;

[0033] Step 2. According to the volume ratio of 1:4:0.03, weigh ethanol, water and divinylbenzene and mix them sequentially to prepare a mixed solution A, and add styrene monomer, acrylic acid monomer and persulfuric acid to the mixed solution in sequence ammonium, to prepare the mixed solution B. At room temperature, the mixed soluti...

Embodiment 3

[0039] A method for preparing a flame-retardant low-smoke polystyrene composite material, comprising the following steps: Step 1: Take styrene and a dispersant with a volume ratio of 1:0.2 in sequence, and weigh the ratio of the weight to the volume of styrene to be 0.025g : 1 mL of benzoyl peroxide, the ratio of weight to styrene volume is 0.4 g: 1 mL of bis(2,3-dibromopropyl) fumarate, styrene, dispersant, benzene peroxide After mixing formyl and bis(2,3-dibromopropyl)fumarate, stir at room temperature for 30 minutes, then heat and stir in a water bath at 89°C for 1.9 hours, filter and dry to obtain polystyrene Flame retardant matrix, spare;

[0040] Step 2. According to the volume ratio of 1:4:0.03, weigh ethanol, water and divinylbenzene and mix them sequentially to prepare a mixed solution A, and add styrene monomer, acrylic acid monomer and persulfuric acid to the mixed solution in sequence ammonium, to prepare the mixed solution B. At room temperature, the mixed soluti...

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Abstract

The invention provides a preparation method of a flame-retardant low-smoke polystyrene composite. The composite comprises 50 to 60 parts of a polystyrene flame-retardant base body, 10 to 15 parts of a polymer, 5 to 10 parts of a non-melt filler, 5 to 15 parts of modified expansible graphite, 5 to 15 parts of micro-encapsulated red phosphorus, and 1 to 5 parts of carbon black. The preparation method comprises the following steps: mixing the materials; adding the mixture into a crusher; putting the crushed materials into a granulator of which the rotational speed is 50 to 55 r / min for granulation so as to obtain the polystyrene composite, wherein in the machine barrel of the granulator, the temperature of a first area is 170 DEG C, the temperature of a second area is 175 DEG C, the temperature of a third area is 180 DEG C, the temperature of a fourth area is 185 DEG C, and the temperature of a mold is 195 DEG C. The polystyrene composite prepared according to the formula and the technology is more excellent in flame retardancy, lower in smoke, and higher in antistatic property and bifunctionality when being compared with the conventional polystyrene composite, and has a favorable comprehensive mechanical property.

Description

technical field [0001] The invention relates to the field of polystyrene, in particular to a method for preparing a flame-retardant low-smoke polystyrene composite material. Background technique [0002] Polystyrene is one of the important general-purpose plastics. It has excellent processing performance, electrical insulation performance, dimensional stability and high transparency, and is inexpensive, so it is widely used in household appliances, office equipment, instruments and meters, auto parts, Household appliances and packaging materials, etc. However, polystyrene is easy to burn in case of fire, and produces a lot of black smoke and toxic gas, which limits its use in some occasions. In order to expand the scope of use, it must be flame retardant modified. At present, the flame retardant modification of polystyrene at home and abroad mainly uses the addition of flame retardants, but the halogen-containing flame retardants generate corrosive hydrogen halides during ...

Claims

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Application Information

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IPC IPC(8): C08L25/14C08L25/08C08K13/06C08K9/06C08K7/14C08K7/24C08K3/04C08K3/02C08F212/08C08F212/36C08F220/06B29B9/06
Inventor 刘继纯张炎斌魏风军彭淑鸽郭迎宾董嘉更罗洁郑喜俊
Owner HENAN UNIV OF SCI & TECH
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