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Environment-friendly flame-retardant nylon 6 nano composite material and preparation method thereof

A nano-composite material and environmental technology, applied in the direction of fibrous filler, dyed low molecular organic compound treatment, etc., can solve the problems of poor clay exfoliation and dispersion effect, unfavorable processing, poor heat resistance of flame retardants, etc., and achieve good exfoliation effect, The effect of good thermal stability and excellent flame retardant properties

Active Publication Date: 2013-08-21
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the present invention uses a flame retardant with relatively good thermal stability to cooperate with organoclay in flame retardancy, which solves technical problems such as poor heat resistance of flame retardant, unfavorable processing, and poor clay peeling and dispersing effect.

Method used

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  • Environment-friendly flame-retardant nylon 6 nano composite material and preparation method thereof
  • Environment-friendly flame-retardant nylon 6 nano composite material and preparation method thereof
  • Environment-friendly flame-retardant nylon 6 nano composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Weigh 35g of concentrated ammonia solution (mass percentage concentration 25%, Beijing Chemical Plant) and put it into a volumetric flask, then add deionized water to constant volume 500ml, stir and leave it behind and transfer it to an Erlenmeyer flask. Store at low temperature. Weigh 9.24g of cyanuric chloride (CC) (Beijing Bailingwei Technology Co., Ltd.) and dissolve it in about 100ml of ice acetone (stored at 0°C for at least 24h), and quickly pour it into a three-neck flask filled with about 80ml of ice water at low temperature , the entire reaction system was placed in an ice bath environment. Add dropwise 100ml of ice ammonia water prepared above with a concentration of 1mol / L. The whole dropping process lasts for about 10 minutes. After the dropping is completed, start timing. The temperature of the reaction solution is controlled at 0°C or 5°C (within this temperature range There is basically no difference in the performance of the prepared organoclay) for 30...

Embodiment 2

[0037] Dry nylon 6 slices (Zhuangyuan Shijiazhuang Refining and Chemical Company), epoxy resin (Phoenix Bluestar New Material Wuxi Resin Factory), MPP (Xingxing Zhejiang Xingxing Flame Retardant Company), organoclay at 80°C for 36 hours, and mix briefly Finally, it is added to a HT-30 twin-screw extruder with a diameter of 30 mm and an aspect ratio of 48 for mixing. The extrusion temperature of the extruder is 225° C., the feeding speed is 20 r / min, and the screw speed is 300 r / min. After compounding, the materials were cut into pellets and dried at 80°C for 24 hours.

[0038] The pellets of the nanocomposite prepared above were injection molded in a HTF80X1 injection molding machine. The injection molding temperature of the injection machine is 230° C., the injection pressure is 30 MPa, the holding time is 20 seconds, and the cooling time is 30 seconds. Injection molded sample sizes are 130mm×13mm×3.2mm and 100mm×100mm×3mm.

[0039] The nanocomposite samples prepared above...

Embodiment 3

[0047] Nylon 6 slices, MPP, epoxy resin, nanoclay (Cloisite Na + Southern Clay Company, US) was dried at a temperature of 80° C. for 36 hours, and after simple mixing, it was added to a HT-30 twin-screw extruder with a diameter of 30 mm and an aspect ratio of 48 for mixing. The extrusion temperature of the extruder is 225°C, the feeding speed is 20r / min, the screw speed is 300r / min, after processing, it is cut into pellets and dried at 80°C for 24 hours.

[0048] The pellets of the nanocomposite prepared above were injection molded in a HTF80X1 injection molding machine. The injection temperature of the injection molding machine is 230° C., the injection pressure is 30 MPa, the holding time is 20 seconds, and the cooling time is 30 seconds. The injection-molded nanocomposites are nylon 6 / clay nanocomposites, nylon 6 / MPP / clay nanocomposites, and nylon 6 / MPP / epoxy resin / clay nanocomposites. The sample size is 130mm x 13mm x 3.2mm and 100mm x 100mm x 3mm. The prepared nanocomp...

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Abstract

The invention relates to an environment-friendly flame-retardant nylon 6 nano composite material and a preparation method thereof, which solve the problem of inflammability of a nylon 6 / laminated silicate nano composite material. The flame-retardant nano composite material has the main characteristic that an environment-friendly intumescent flame retardant of melamine polyphosphate (MPP) and a clay lamina retard flame in a synergic mode to achieve V-0 grades of vertical combustion. Meanwhile, a cone calorimeter test result of the flame-retardant nano composite material is obviously improved compared with that of a pure nylon 6 material. The flame-retardant nano composite material is prepared by compounding a nylon 6 monomer, MPP, epoxy resin and organic clay or clay, wherein the nylon 6 monomer, the MPP, the epoxy resin and the clay are existing materials, and the organic clay is prepared in the invention. The invention can be widely applied to fields such as automobiles, electronics,decoration and the like.

Description

technical field [0001] The environmentally friendly flame-retardant nylon 6 nanocomposite material of the present invention is a novel flame-retardant nanocomposite material for automobiles, electronics, and home decoration. More precisely, the environmentally friendly flame-retardant nylon 6 nanocomposite material of the present invention The material can be used in a large number of industries that require flame-retardant nylon 6 materials, such as automobiles, electronics, and decoration. Background technique [0002] Nylon 6 is an engineering plastic widely used in industries such as automobiles, electronics, and decoration. Due to its special chemical structure, pure nylon 6 can produce a large number of molten droplets to take away heat and substances during the combustion process, so it has a certain self-extinguishing performance during the combustion process. However, this self-extinguishing effect does not appear in nylon 6 composites, and the droplet self-extingu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/42C09C3/08C08L77/02C08L63/00C08K13/06C08K9/04C08K3/34C08K5/3492
Inventor 于中振元进廷姜志国李艳芳刘瑞琼
Owner BEIJING UNIV OF CHEM TECH
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