The synergistic effect between bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate and polysiloxane on the photo-aging resistance and flame retardancy of polypropylene

Li, Yuchun; Xue, Boqiong; Qi, Peng; Gu, Xiaoyu; Sun, Jun; Li, Hongfei; Lin, Jinran

doi:10.1016/j.compositesb.2022.109666

Cited by 28 publications

(11 citation statements)

References 42 publications

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“…The pHRR value of PA6-TN/TA-3 samples slightly decreased. Generally speaking, the molecular chain of PA6 was broken during UV irradiation, and the formed short chains and free radicals were more likely to burn, resulting in increased heat release . However, due to the free radical scavenging activity of TA, some phenolic hydroxyl radicals generated by TA can combine with the radicals generated by the decomposition of PA6, resulting in the decrease of the pHRR value after UV irradiation. ,, The corresponding UV transmittance rates were obtained and shown in Figure S3 and Table S2 .…”

Section: Resultsmentioning

confidence: 99%

Constructing a Fully Biobased Coating to Improve the Flame Retardancy, Antibacterial Properties, and UV Resistance of Polyamide 6 Fabrics

Liu

Qiu

et al. 2022

ACS Appl. Eng. Mater.

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A fully biobased solvent-free coating composed of tannic acid (TA) and taurine (TN) was constructed and introduced on polyamide 6 (PA6) fabric by a dipping-nipping process to improve the flame retardancy, antibacterial properties, and UV resistance of the fabric. Fire behavior characterization indicated that the presence of the TN/TA coating eliminated the melt dripping of the PA6 fabric and increased the limiting oxygen index to 26.8% from 19.4% of the control fabric sample. The total heat release and total smoke production of the coated fabric sample was reduced by 31.3% and 66.7%, respectively, compared to that of the control fabric sample. Moreover, the antibacterial activity of the coated fabric against both Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus was significantly enhanced. After 120 h of UV irradiation, the warp and weft tensile strength of the TN/TA coated PA6 fabric sample were increased by 200.9% and 159.0%, respectively, compared to that of the control PA6 fabric sample; in addition, the LOI and the damage length of the TN/TA coated PA6 fabric were almost unaffected. It was demonstrated that TA promoted the char formation and eliminated the melt dripping in the condensed phase, and TN diluted O 2 and combustible volatiles by releasing incombustible SO 2 in the gas phase. This work has provided useful information to prepare fully biobased multifunctional coatings for PA6 synthetic fabrics.

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Section: Resultsmentioning

confidence: 99%

Constructing a Fully Biobased Coating to Improve the Flame Retardancy, Antibacterial Properties, and UV Resistance of Polyamide 6 Fabrics

Liu

Qiu

et al. 2022

ACS Appl. Eng. Mater.

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“…Previously, the traditional reagents used for surface treatment were mainly silane coupling agents, but their effects were limited [ 112 , 113 ]. Recently, polysiloxane and its derivatives have become significant surface modifiers of FRs used for PO polymers because of their high flame-retardant efficiency, high thermal stability, and excellent compatibility with PO substrates [ 114 , 115 ].…”

Section: Organic Flame Retardantsmentioning

confidence: 99%

Recent Advances in Halogen-Free Flame Retardants for Polyolefin Cable Sheath Materials

Liu

et al. 2022

Polymers

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With the continuous advancements of urbanization, the demand for power cables is increasing to replace overhead lines for energy transmission and distribution. Due to undesirable scenarios, e.g., the short circuit or poor contact, the cables can cause fire. The cable sheath has a significant effect on fire expansion. Thus, it is of great significance to carry out research on flame-retardant modification for cable sheath material to prevent fire accidents. With the continuous environmental concern, polyolefin (PO) is expected to gradually replace polyvinyl chloride (PVC) for cable sheath material. Moreover, the halogen-free flame retardants (FRs), which are the focus of this paper, will replace the ones with halogen gradually. The halogen-free FRs used in PO cable sheath material can be divided into inorganic flame retardant, organic flame retardant, and intumescent flame retardant (IFR). However, most FRs will cause severe damage to the mechanical properties of the PO cable sheath material, mainly reflected in the elongation at break and tensile strength. Therefore, the cooperative modification of PO materials for flame retardancy and mechanical properties has become a research hotspot. For this review, about 240 works from the literature related to FRs used in PO materials were investigated. It is shown that the simultaneous improvement for flame retardancy and mechanical properties mainly focuses on surface treatment technology, nanotechnology, and the cooperative effect of multiple FRs. The principle is mainly to improve the compatibility of FRs with PO polymers and/or increase the efficiency of FRs.

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“…The potential toxicity of the substitute fire retardants is being investigated [ 75 ]. The presence of conventional fire retardant additives in the compound often decreases the UV stability of polymers [ 76 ]. Whether or not the alternative fire retardants also have this problem has not been fully investigated.…”

Section: Introductionmentioning

confidence: 99%

Effects of UV radiation on natural and synthetic materials

Andrady

Heikkilä

Pandey³

et al. 2023

Photochem Photobiol Sci

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The deleterious effects of solar ultraviolet (UV) radiation on construction materials, especially wood and plastics, and the consequent impacts on their useful lifetimes, are well documented in scientific literature. Any future increase in solar UV radiation and ambient temperature due to climate change will therefore shorten service lifetimes of materials, which will require higher levels of stabilisation or other interventions to maintain their lifetimes at the present levels. The implementation of the Montreal Protocol and its amendments on substances that deplete the ozone layer, controls the solar UV-B radiation received on Earth. This current quadrennial assessment provides a comprehensive update on the deleterious effects of solar UV radiation on the durability of natural and synthetic materials, as well as recent innovations in better stabilising of materials against solar UV radiation-induced damage. Pertinent emerging technologies for wood and plastics used in construction, composite materials used in construction, textile fibres, comfort fabric, and photovoltaic materials, are addressed in detail. Also addressed are the trends in technology designed to increase sustainability via replacing toxic, unsustainable, legacy additives with ‘greener’ benign substitutes that may indirectly affect the UV stability of the redesigned materials. An emerging class of efficient photostabilisers are the nanoscale particles that include oxide fillers and nanocarbons used in high-performance composites, which provide good UV stability to materials. They also allow the design of UV-shielding fabric materials with impressive UV protection factors. An emerging environmental issue related to the photodegradation of plastics is the generation of ubiquitous micro-scale particles from plastic litter exposed to solar UV radiation. Graphical abstract

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The synergistic effect between bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate and polysiloxane on the photo-aging resistance and flame retardancy of polypropylene

Cited by 28 publications

References 42 publications

Constructing a Fully Biobased Coating to Improve the Flame Retardancy, Antibacterial Properties, and UV Resistance of Polyamide 6 Fabrics

Constructing a Fully Biobased Coating to Improve the Flame Retardancy, Antibacterial Properties, and UV Resistance of Polyamide 6 Fabrics

Recent Advances in Halogen-Free Flame Retardants for Polyolefin Cable Sheath Materials

Effects of UV radiation on natural and synthetic materials

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