Hyperbranched polymer flame retardant and preparation method and application thereof

A technology of hyperbranched polymers and flame retardants, applied in the field of flame retardant materials, can solve the problems of cellulose being flammable and limited in use, and achieve the effects of simple synthesis process, simple purification process, and improved anti-dripping effect

Active Publication Date: 2017-11-07
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, cellulose is extremely flammable when exposed to fire, which greatly limits its use in life, industry and other fields.

Method used

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  • Hyperbranched polymer flame retardant and preparation method and application thereof
  • Hyperbranched polymer flame retardant and preparation method and application thereof
  • Hyperbranched polymer flame retardant and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add 32.4g of m-phenylenediamine, 12.35g of boric acid and 4g of ferric chloride into a three-necked flask in sequence, dissolve with 100ml of NMP and 30ml of toluene as solvents, stir at 100°C for 8h, then add 30ml of xylene, and then raise the temperature , stirred at 150°C and 180°C for 5h and 2h in turn. Then carry out purification treatment, dissolve the reaction product with acetone, add a large amount of ether to precipitate it and filter it with suction, repeat the above operation three times, and finally put it in a vacuum oven at 140°C for 10 hours to finally obtain the hyperbranched polymer flame retardant p-PNB .

[0028] The synthesis reaction formula of hyperbranched polymer flame retardant p-PNB in ​​the present embodiment is as figure 1 shown.

[0029] The hyperbranched polymer flame retardant p-PNB that present embodiment prepares 1 H NMR as figure 2 As shown, the results show that: chemical shift δ5.4-7.2ppm is H on the benzene ring (as shown in a...

Embodiment 2

[0032] The hyperbranched polymer flame retardant p-PNB synthesized in Example 1 was melt-blended with PET at a mass ratio of 3:100 in a twin-screw extruder at 206-280°C, then extruded and cooled to obtain the flame-retardant p-PNB PNB composite PET.

[0033] Injection molded into a standard sample with an injection molding machine, test its limiting oxygen index (LOI) and disposal combustion grade (UL-94) with a limiting oxygen tester and a vertical combustion instrument respectively, the flame-retardant p-PNB composite PET obtained in the present embodiment The LOI is 28.5, and its UL-94 rating is V-0.

Embodiment 3

[0035] The hyperbranched polymer flame retardant p-PNB synthesized in Example 1 was melt-blended with PET at a mass ratio of 5:100 in a twin-screw extruder at 206-280°C, then extruded and cooled to obtain the flame-retardant p-PNB PNB composite PET.

[0036] Injection molded into a standard sample with an injection molding machine, test its limiting oxygen index (LOI) and disposal combustion grade (UL-94) with a limiting oxygen tester and a vertical combustion instrument respectively, the flame-retardant p-PNB composite PET obtained in the present embodiment The LOI is 29.5, and its UL-94 rating is V-0.

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Abstract

The invention relates to a hyperbranched polymer flame retardant and a preparation method and application thereof. Boric acid and a m-phenylenediamine monomer are utilized to synthesize the hyperbranched polymer flame retardant p-PNB, and the double-screw melt extrusion process is utilized to prepare flame-retardant p-PNB composite PET; and a p-PNB dispersion liquid and a cellulose solution are mixed to prepare a flame-retardant p-PNB composite regenerated cellulose film. According to the prepared hyperbranched polymer flame retardant p-PNB, not only is the problem of flame retardant melt dripping of PET solved, but also the flame retardancy of the regenerated cellulose film is improved, and meanwhile, the hyperbranched polymer flame retardant is halogen-free and environment-friendly, and causes no harmful substances during combustion. The hyperbranched polymer flame retardant is simple in synthetic process, has a good flame-retardant effect on polyester and the regenerated cellulose film and has a good application prospect in flame retardant finishing of textiles.

Description

technical field [0001] The invention belongs to the technical field of flame retardant materials, in particular to a hyperbranched polymer flame retardant and its preparation method and application. Background technique [0002] Poly(ethylene terephthalate) (PET) fibers are widely used in the clothing industry, decorative fabrics, and packaging materials due to their low cost, excellent mechanical properties, and good dimensional stability, to meet the complex and complex needs of daily life. requirements. However, PET is a flammable material. PET is a thermoplastic resin. When it is burned or heated, it is heated and melted before burning. During the burning process, the drippings are accompanied by flames, which can easily cause the ignition of the surrounding combustibles, resulting in "secondary combustion", expanding the scope and spread of the fire, and the drippings are also easy to burn people's skin. It is difficult to achieve unity in terms of molten droplets. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G79/08C08L67/02C08L1/02C08L85/04C08J5/18
CPCC08G79/08C08J5/18C08J2301/02C08J2485/04C08L1/02C08L67/02C08L2201/02C08L2201/22C08L2203/16C08L85/04
Inventor 毛志平朱玉玺徐红隋晓锋钟毅张琳萍荆雪金梁静
Owner DONGHUA UNIV
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