Influence of Flame-Retardant Chemicals on the Gas-Phase Combustion of Poly(Ethylene Terephthalate)

Poly(ethylene terephthalate) (PET) fiber with excellent flame retardant property was prepared with introducing a containing phosphorus flame retardant 10-(2’,5’-dihydroxyphenyl) -9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (ODOPB) into PET by melt blending method. The intrinsic viscosity of the modified PET was decreased after melt blending, indicated that ODOPB could promote the degradation of PET. The addition of ODOPB can increase the amount of carbon residue of PET, which can effectively reduce the heat transfer. The movement and regularity of PET molecular chain are affected by ODOPB, resulting in the reducing of the crystallization of PET. The Raman curves indicate that the addition of ODOPB can improve the regularity of carbon layer, which is conducive to achieve the effect of flame retardant. When the mass fraction of P is 0.7 %, the limiting oxygen index of sample reaches 32.4% and UL-94 vertical reaches V-2, the fiber fracture strength is 2.6 cN/dtex, which has excellent flame retardant and mechanical properties.

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Thermal Analysis of Some Organo Bromides as Potential Flame Retardants for Poly(Ethylene Terephthalate

Journal of Fire Sciences ◽

10.1177/073490418300100404 ◽

1983 ◽

Vol 1 (4) ◽

pp. 255-270 ◽

Cited By ~ 4

Author(s):

M. Day ◽

D.M. Wiles

Keyword(s):

Thermal Analysis ◽

Weight Loss ◽

Gas Phase ◽

Flame Retardants ◽

Ethylene Terephthalate ◽

Poly Ethylene Terephthalate ◽

Bromide Ions ◽

Infrared Heater ◽

Poly Ethylene

A technique capable of simultaneously monitoring bromide ions and an asso ciated weight loss of organic bromides when heated with an infrared heater chosen to reflect conditions similar to those encountered in the burning pro cess is described. The technique has been applied to a range of aliphatic and aromatic bromine compounds in order to evaluate their potential as candidate gas-phase combustion inhibitors for poly/ethylene terephthalate).

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Construction of Carbon Microspheres-Based Silane Melamine Phosphate Hybrids for Flame Retardant Poly(ethylene Terephthalate)

Polymers ◽

10.3390/polym11030545 ◽

2019 ◽

Vol 11 (3) ◽

pp. 545 ◽

Cited By ~ 1

Author(s):

Baoxia Xue ◽

Ruihong Qin ◽

Jie Wang ◽

Mei Niu ◽

Yongzhen Yang ◽

...

Keyword(s):

Flame Retardant ◽

Ethylene Terephthalate ◽

Hydrothermal Reaction ◽

Reaction System ◽

Fire Risk ◽

Carbon Microspheres ◽

Limiting Oxygen Index ◽

Melamine Phosphate ◽

Poly Ethylene Terephthalate ◽

Poly Ethylene

To improve the flame retardancy and inhibit the smoke of poly(ethylene terephthalate) (PET), carbon microspheres (CMSs)-based melamine phosphate (MP) hybrids (MP-CMSs) were constructed in situ with the introduction of CMSs into the hydrothermal reaction system of MP. The integrated MP-CMSs were modified by 3-Aminopropyltriethoxysilane (APTS) to obtain the silane MP-CMSs (SiMP-CMSs) to strengthen the interface binding between the MP-CMSs and PET matrix. The results showed that the SiMP layer was loaded on the CMSs surface. The addition of only 3% SiMP-CMSs increased the limiting oxygen index (LOI) value of the PET from 21% ± 0.1% to 27.7% ± 0.3%, reaching a V-0 burning rate. The SiMP-CMSs not only reduced heat damage, but also inhibited the smoke release during PET combustion, whereupon the peak heat release rate (pk-HRR) reduced from 513.2 to 221.7 kW/m2, and the smoke parameters (SP) decreased from 229830.2 to 81892.3 kW/kg. The fire performance index (FPI) rose from 0.07 m2s/kW to 0.17 m2s/kW, demonstrating the lower fire risk. The proportion of the flame-retardant mode in the physical barrier, flame inhibition, and char effects were recorded as 44.53%, 19.04%, and 9.04%, respectively.

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Novel Oligo-Ester-Ether-Diol Prepared by Waste Poly(ethylene terephthalate) Glycolysis and Its Use in Preparing Thermally Stable and Flame Retardant Polyurethane Foam

Polymers ◽

10.3390/polym11020236 ◽

2019 ◽

Vol 11 (2) ◽

pp. 236 ◽

Cited By ~ 10

Author(s):

Cuong N. Hoang ◽

Chi T. Pham ◽

Thu M. Dang ◽

DongQuy Hoang ◽

Pyoung-Chan Lee ◽

...

Keyword(s):

Flame Retardant ◽

Polyurethane Foam ◽

Flame Retardancy ◽

Ethylene Terephthalate ◽

Recycled Pet ◽

Pet Bottles ◽

Poly Ethylene Terephthalate ◽

Ul 94 ◽

Poly Ethylene ◽

Fire Properties

Rigid polyurethane foam (PUF) was successfully prepared from a novel oligo-ester-ether-diol obtained from the glycolysis of waste poly(ethylene terephthalate) (PET) bottles via reaction with diethylene glycol (DEG) in the presence of ZnSO4 7H2O. The LC-MS analysis of the oligodiol enabled us to identify 67 chemical homologous structures that were composed of zero to four terephthalate (T) ester units and two to twelve monoethylene glycol (M) ether units. The flame retardant, morphological, compression, and thermal properties of rigid PUFs with and without triphenyl phosphate (TPP) were determined. The Tg values showed that TPP played a role of not only being a flame retardant, but also a plasticizer. PUF with a rather low TPP loading had an excellent flame retardancy and high thermal stability. A loading of 10 wt % TPP not only achieved a UL-94 V-0 rating, but also obtained an LOI value of 21%. Meanwhile, the PUF without a flame retardant did not achieve a UL-94 HB rating; the sample completely burned to the holder clamp and yielded a low LOI value (17%). The fire properties measured with the cone calorimeter were also discussed, and the results further proved that the ﬂame retardancy of the PUF with the addition of TPP was improved significantly. The polymeric material meets the demands of density and compression strength for commercial PUF, as well as the needs of environmental development. The current study may help overcome the drawback of intrinsic high ﬂammability and enlarge the ﬁre safety applications of materials with a high percentage of recycled PET.

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Influence of the lignin on thermal degradation and melting behaviour of poly(ethylene terephthalate) based composites

e-Polymers ◽

10.1515/epoly.2009.9.1.596 ◽

2009 ◽

Vol 9 (1) ◽

Cited By ~ 8

Author(s):

Maurizio Canetti ◽

Fabio Bertini

Keyword(s):

Gas Phase ◽

Ethylene Terephthalate ◽

Degradation Products ◽

Melting Behaviour ◽

Screw Extruder ◽

Single Screw Extruder ◽

Poly Ethylene Terephthalate ◽

Poly Ethylene ◽

Thermal Stability Of ◽

Melting Entropy

AbstractPoly(ethylene terephthalate) (PET) has been compounded with lignin (L) by a single-screw extruder. The influence of L presence and its content on the thermal stability of PET has been studied by using thermogravimetric analysis. The experiments carried out in oxidative conditions evidenced the barrier effect of L that interferes to the diffusion of the volatile degradation products to the gas phase and at the same time to the diffusion of the oxygen from the gas phase to the PET matrix. The influence of L on the melting behaviour of PET has been investigated on samples submitted to subsequent annealing steps procedure. X-ray techniques were employed to investigate crystallinity and crystal dimensions of pure PET and PET/L composites. Considering the supermolecular and crystal structure of the annealed samples, their melting behaviour was explained assuming small changes in the melting entropy.

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