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Application of polyamide 5X as flame-retardant material

A flame retardant material and polyamide technology, which is applied in the application field of polyamide 5X as a flame retardant material, can solve the problems of unusability, corrosion, and insignificant effect, and achieve the effect of increasing the number of washings and good flame retardant effect.

Active Publication Date: 2016-11-23
CATHAY R&D CENT CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

DE-A-10316873 discloses flame retardant polyamide molding compositions with phosphinates and / or diphosphinates as flame retardants, based on the working examples of polyamides PA6T / 6I and PA6T / 66 The V-0 grade was obtained in the UL94 fire test, however, it caused unacceptable corrosion in the processing parts (such as barrels, screws, check valves, and molds of extruders and injection molding machines) that contact the melt during processing, Cannot be used for molding to obtain desired moldings
In US-A-2009 / 0030124, zinc borate and mineral boehmite are used to reduce the corrosion effect of phosphate flame retardant additives, but the effect is still not obvious under the premise of large doses

Method used

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  • Application of polyamide 5X as flame-retardant material
  • Application of polyamide 5X as flame-retardant material
  • Application of polyamide 5X as flame-retardant material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] 1,5-Pentanediamine bioproduction:

[0103] The lysine fermentation stock solution is added in the reaction tank of 1000 liters, and the lysine content is 11%; The SO in the lysine fermentation stock solution 4 2- The concentration is about 0.23mol / kg, which also contains sugar and free NH 4 + , total sugar content 350ppm, free NH 4 + The content is 0.032mol / kg. Add lysine decarboxylase cell and coenzyme (5 '-pyridoxal phosphate) in this lysine fermentation stock solution again, decarboxylase cell addition and lysine weight ratio 0.021 in the lysine fermentation stock solution, coenzyme concentration ( The ratio of the amount of coenzyme added to the weight of all reaction materials except coenzyme) is 0.15mmol / kg; the reaction is stirred at 36°C for 2h; the content of pentamethylenediamine in the solution after the reaction is 61.5g / kg.

Embodiment 2

[0104] Embodiment 2 mixed fermentation

[0105] The Escherichia coli strain with the preservation number CCTCC M 2013100 was cultured in a shaker flask. The shaker flask was 500ml, the liquid volume was 30ml, the shaker speed was 180rpm, the fermentation temperature was 35°C, and the formula of the fermentation medium was as follows. The initial pH of the fermentation was 7.0. After inoculation, culture was carried out for 50 hours, and the strain Hafnia alvei which was capable of producing lysine decarboxylase produced by Kaiser Company was inserted, and the culture was continued at 30° C. for 30 hours.

[0106] Component

[0107] After the fermentation was finished, the content of 1,5-pentanediamine in the fermentation broth was determined to be 5.3 g / L.

Embodiment 3

[0109] Preparation of polyamide 56:

[0110] (1) Mix adipic acid, 1,5-pentanediamine and water evenly in the reactor, wherein the weight of dibasic acid and diamine accounts for 50% of the total weight of the solution, take a small amount of salt solution and dilute to 10 %Detected at 25°C, the pH value was 8.03, and made a polyamide 56 salt solution with a mass percentage concentration of 50%;

[0111] (2) Add 40ppm of heat stabilizer sodium hypophosphite (accounting for the total weight of dibasic acid and diamine) to polyamide 56 salt solution to obtain polyamide 56 salt mixed solution. Concentrated to a concentration of 75% under conditions;

[0112] (3) Heating the system, gradually increasing the pressure to 1.0MPa, and maintaining the pressure for prepolymerization until the system temperature reaches 250°C;

[0113] (4) gradually reduce pressure to normal pressure, and the system temperature reaches 285 ° C;

[0114] (5) The system is maintained at normal pressure a...

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PUM

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Abstract

The invention provides an application of polyamide 5X as a flame-retardant material. When taken as the flame-retardant material, polyamide 5X has a good flame-retardant effect, is safe to the environment, safe in physiology and compatible with various high-polymer textile materials, cannot damage attractiveness and texture characteristics of textile, and is resistant to repeated washing and cleaning. When taken as the flame-retardant material, polyamide 5X has flame retardance which cannot be reduced with increase of the washing times, and belongs to a permanent flame-retardant type.

Description

technical field [0001] The present invention relates to the application of polyamide 5X as flame retardant material. Background technique [0002] A variety of polymer materials, such as polypropylene, polyamide, polyester, polyacrylonitrile, etc., can be processed into fibers through spinning, or cast into engineering materials. Taking spinning as an example, textiles are widely used in many fields such as fabrics, furniture and vehicle interior decorations, toys, and packaging materials. However, as we all know, the above-mentioned polymer materials are flammable in the air. In recent years, with the continuous expansion of their application fields, people have paid more and more attention to the flame retardancy of polymer materials, and flame retardancy has become an important aspect of polymer materials. The field of focus. [0003] Polyamide is a polymer composite material with good performance. It can be obtained by ring-opening polymerization of lactam or amino aci...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08G69/26C08K3/02C08K5/3492D01F6/60D01F6/90D01F1/07
CPCC08G69/26C08K3/02C08K5/34928C08K2003/026C08L77/06D01F1/07D01F6/60D01F6/90
Inventor 刘修才郑毅
Owner CATHAY R&D CENT CO LTD
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