Preparation and properties of an efficient smoke suppressant and flame‐retardant agent for thermoplastic polyurethane

Jiao, Chuanmei; Wang, Hongzhi; Zhang, Zuobin; Chen, Xilei

doi:10.1002/pat.4041

Cited by 31 publications

(18 citation statements)

References 40 publications

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“…TG is the most favored technique for evaluations the thermal stability of various polymers . Figure shows the TG and derivative thermogravimetric (DTG) curves of all samples.…”

Section: Resultsmentioning

confidence: 99%

“…TG is the most favored technique for evaluations the thermal stability of various polymers. 28 Figure 9 shows the TG and derivative ther- It was easily to come to a conclusion that CS could promote TPU decomposition in advance. It could be seen in the curve of DTG that the decomposition rate of the sample containing 2.0-wt% CS was decreased at about 375 C, much lower than that of TPU.…”

Section: Tg Analysismentioning

confidence: 99%

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Flame retardancy and thermal decomposition behavior of TPU/chitosan composites

Jiao

Chen

et al. 2019

Polymers for Advanced Techs

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The application of chitosan (CS) in new materials is a hot research topic. In this paper, CS was used alone as flame retardant to prepare thermoplastic polyurethane elastomer (TPU) composites. Then, the flame retardancy and thermal decomposition behavior of TPU/CS composites were intensively investigated using cone calorimeter test (CCT), scanning electron microscope (SEM), microscale combustion colorimeter (MCC) test, thermogravimetric analysis/infrared spectrometry (TG‐IR), and gas chromatography‐mass spectrometry (GC‐MS). The results showed that CS can reduce the fire risk of TPU; 2.0‐wt% CS could make the peak value of heat release rate (pHRR) decreased to 457.2 kW/m2, reduced by 65.9% compared with TPU. And the peak value of smoke production rate (pSPR) and total smoke release (TSR) of the same sample was decreased by 79.4% and 54.2%, respectively. The TG‐IR and GC‐MS results confirmed that CS could promote TPU decomposition in advance, reacting with the decomposition products of TPU. Therefore, the production of combustible gas was reduced. The GC‐MS results showed that the production of isocyanates and ethers was reduced with the addition of CS. The digital photographs of SEM for the samples after CCT were shown that the char residue layer of the sample containing 2.0‐wt% CS was fibrous in shape. It could be speculated that the thermal decomposition products from TPU could react with CS at low temperature, which reduced the production of flammable gases. So CS had a good prospect in reducing the fire hazard for TPU.

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“…TG is the most favored technique for evaluations the thermal stability of various polymers . Figure shows the TG and derivative thermogravimetric (DTG) curves of all samples.…”

Section: Resultsmentioning

confidence: 99%

Section: Tg Analysismentioning

confidence: 99%

Flame retardancy and thermal decomposition behavior of TPU/chitosan composites

Jiao

Chen

et al. 2019

Polymers for Advanced Techs

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“…Figure showed the mass loss curves of TPU composites in the CCT. The mass loss could be used to evaluate the char forming property, which was related to the behavior of heat release and smoke suppression . It could be seen from Figure that the differences between pure TPU and TPU composites were not obvious at the beginning of the combustion progress.…”

Section: Resultsmentioning

confidence: 99%

“…The mass loss could be used to evaluate the char forming property, which was related to the behavior of heat release and smoke suppression. 30 It could be seen from Figure 9 residual mass of TPU/PMDA-1, TPU/PMDA-2 TPU/PMDA-3, and TPU/PMDA-4 was 10%, 12%, 15%, and 20% at the end of combustion. Obviously, the addition of PMDA could slow down the mass loss rate and promoted the char forming in the combustion process of TPU composites.…”

Section: Massmentioning

confidence: 85%

Fire safety of thermoplastic polyurethane based on pyromellitic dianhydride

2018

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Summary In this paper, pyromellitic dianhydride (PMDA) was firstly used as fire safety agent for thermoplastic polyurethane (TPU). And, the fire safety improvement of PMDA in TPU was intensively investigated by limiting oxygen index (LOI), smoke density test (SDT), cone calorimeter test, and thermogravimetric/infrared spectroscopy, respectively. It has been found that PMDA could significantly improve the ignition level, and the LOI value increase to 28.5% when 8.0 wt% PMDA was incorporated into TPU; PMDA also could effectively suppress the smoke production and heat release during the combustion process. The peak heat release rate and total smoke release of the sample with 8.0 wt% PMDA were decreased by 68% and 22% compared with pure TPU in cone calorimeter test. The thermogravimetric/infrared spectroscopy results showed that PMDA could improve the thermal stability of TPU composites at high temperature and increased the release of CO2, H2O, and so on. All results confirmed that PMDA would have a good prospect in reducing the fire hazard of TPU.

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“…Polyurethane elastomer (PUE) is mainly composed of hard and soft segments, and the soft segments are usually polyols, while the hard segments are generally isocyanates and chain extenders. Because of its excellent elasticity, radiation resistance, abrasion resistance, and low temperature resistance, PUE is widely used in many industries, such as mining, machinery, construction, and auto‐making . But PUE is easy to burn in air and produces toxic gases, such as HCN and CO, which can cause serious harm to human health and the environment.…”

Section: Introductionmentioning

confidence: 99%

Surface modification of α‐zirconium phosphate by zeolitic imidazolate frameworks‐8 and its effect on improving the fire safety of polyurethane elastomer

Liu

et al. 2018

Polymers for Advanced Techs

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A novel type of ZIF‐8/α‐ZrP (zeolitic imidazolate frameworks‐8/α‐zirconium phosphate) hybrid was obtained through surface modification of α‐ZrP by ZIF‐8 and was characterized. Subsequently, ZIF‐8/α‐ZrP was added to polyurethane elastomer (PUE) by simple blending, and the thermal behavior, flame retardancy, and smoke suppression properties of the ZIF‐8/α‐ZrP hybrid on PUE were studied. Compared with pure PUE, the test results showed that the char yield of the ZIF‐8/α‐ZrP/PUE composite at 700°C and its Tg values were increased, respectively. The peak heat release rate and total heat release of the ZIF‐8/α‐ZrP/PUE composite decreased by 69.6% and 45.6%, respectively. Meanwhile, its smoke production rate and total smoke production decreased by 59.3% and 40.5%, respectively. The improved flame retardancy and smoke suppression were primarily ascribed to the physical barrier and catalytic carbonization effects of α‐ZrP. Furthermore, the metal oxide decomposed by ZIF‐8 could further facilitate the production of char residue and raise the compactness of the char layer.

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Preparation and properties of an efficient smoke suppressant and flame‐retardant agent for thermoplastic polyurethane

Cited by 31 publications

References 40 publications

Flame retardancy and thermal decomposition behavior of TPU/chitosan composites

Flame retardancy and thermal decomposition behavior of TPU/chitosan composites

Fire safety of thermoplastic polyurethane based on pyromellitic dianhydride

Surface modification of α‐zirconium phosphate by zeolitic imidazolate frameworks‐8 and its effect on improving the fire safety of polyurethane elastomer

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