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P-Br synergistic high-expansion and flame-retardation PET material and preparation method thereof

A high-expansion, compound flame retardant technology, applied in the field of flame retardant, can solve the problems of unfavorable health of processing personnel, significant impact on mechanical properties, and difficulty in adding process, so as to maintain excellent mechanical properties, improve flame retardant performance and melt resistance The effect of drop performance

Inactive Publication Date: 2017-04-05
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, most of the most common flame retardants used in PET in the market are small molecule brominated flame retardants and inorganic phosphorus flame retardants. Often the addition amount must reach more than 20% to have good flame retardancy. The impact of this on the mechanical properties significantly
Most of the flame retardants are powder and liquid, making the adding process difficult and harmful to the health of processing personnel

Method used

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  • P-Br synergistic high-expansion and flame-retardation PET material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1, raw material formula is as follows:

[0020] PET resin 900g

[0021] Aluminum Diethylphosphinate 50g

[0022] Pentabromobenzyl polyacrylate 50g

[0023] Prepared according to the following steps:

[0024] (1) The raw material PET was dried in a vacuum oven at 120°C for 24 hours; aluminum diethyl hypophosphite and pentabromobenzyl polyacrylate were dried in a vacuum oven at 120°C for 6 hours;

[0025] (2) Mixing of raw materials: mix polyethylene terephthalate, aluminum diethyl hypophosphite, and pentabromobenzyl polyacrylate in a high-speed mixer at room temperature for 3 to 5 minutes according to the above-mentioned weighing grams, so that Each component is dispersed evenly;

[0026] (3) Add the mixture obtained in step (2) to the feeding port of the twin-screw extruder, and set the temperature of the first zone to the ninth zone of the twin-screw extruder to be 232 / 237 / 247 / 257 / 262 / 262 / 257 / 257 / 252°C, the temperature of the machine head is 247°C, and...

Embodiment 2

[0028] Embodiment 2, raw material formula is as follows:

[0029] PET resin 850g

[0030] Aluminum Diethylphosphinate 100g

[0031] Pentabromobenzyl polyacrylate 50g

[0032] Prepared according to the following steps:

[0033] (1) The raw material PET was dried in a vacuum oven at 120°C for 24 hours; aluminum diethyl hypophosphite and pentabromobenzyl polyacrylate were dried in a vacuum oven at 120°C for 6 hours;

[0034] (2) Mixing of raw materials: mix polyethylene terephthalate, aluminum diethyl hypophosphite, and pentabromobenzyl polyacrylate in a high-speed mixer at room temperature for 3 to 5 minutes according to the above-mentioned weighing grams, so that Each component is dispersed evenly;

[0035] (3) Add the mixture obtained in step (2) to the feeding port of the twin-screw extruder, and set the temperature of the first zone to the ninth zone of the twin-screw extruder to be 232 / 237 / 247 / 257 / 262 / 262 / 257 / 257 / 252°C, the temperature of the machine head is 247°C, an...

Embodiment 3

[0037] Embodiment 3, raw material formula is as follows:

[0038] PET resin 800g

[0039] Aluminum Diethylphosphinate 100g

[0040] Pentabromobenzyl polyacrylate 100g

[0041] Prepared according to the following steps:

[0042] (1) The raw material PET was dried in a vacuum oven at 120°C for 24 hours; aluminum diethyl hypophosphite and pentabromobenzyl polyacrylate were dried in a vacuum oven at 120°C for 6 hours;

[0043] (2) Mixing of raw materials: mix polyethylene terephthalate, aluminum diethyl hypophosphite, and pentabromobenzyl polyacrylate in a high-speed mixer at room temperature for 3 to 5 minutes according to the above-mentioned weighing grams, so that Each component is dispersed evenly;

[0044] (3) Add the mixture obtained in step (2) to the feeding port of the twin-screw extruder, and set the temperature of the first zone to the ninth zone of the twin-screw extruder to be 232 / 237 / 247 / 257 / 262 / 262 / 257 / 257 / 252°C, the temperature of the machine head is 247°C, a...

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Abstract

The invention discloses a P-Br synergistic high-expansion and flame-retardation PET material and a preparation method thereof, and belongs to the technical field of flame retardation. The flame-retardation composite material comprises, by weight, 80-90% of PET, 5-10% of aluminum diethylphosphinate and 5-10% of polypentabromobenzyl acrylate. The flame-retardation PET material prepared in the invention has excellent flame retardation performance and excellent droplet resistance; the flame-retardation PET material is sintered to form a porous carbon layer, and highly expands; and the use amount of halogens is greatly reduced, so negative influences of the halogens on environment are reduced.

Description

technical field [0001] The invention belongs to the technical field of flame retardancy, and in particular relates to a novel phosphorus-bromine flame-retardant PET material and a preparation method thereof. Background technique [0002] Polyethylene terephthalate (PET) is currently one of the most important thermoplastic engineering materials, which has many excellent properties, such as excellent wear resistance, heat resistance, corrosion resistance, dimensional stability and electrical insulation, etc. . It is widely used in the production of fibers, films, and bottled containers; in recent years, the proportion of PET demand in the fields of automobiles, household appliances, machinery, etc. is also increasing. Pure PET is extremely flammable in the air, and its limiting oxygen index is only 21%, so it is very important to improve the flame retardancy of PET. As we all know, when a fire occurs, the molten droplets will cause the flame to spread and cause secondary dam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L33/16C08K5/5313B29C35/02B29C47/92B29C48/92
CPCC08L67/02B29C35/02B29C48/92B29C2948/92704C08L2201/02C08L33/16C08K5/5313
Inventor 罗钟琳郭永萍王标兵
Owner CHANGZHOU UNIV
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