Confined Dispersion of Zinc Hydroxystannate Nanoparticles into Layered Bimetallic Hydroxide Nanocapsules and Its Application in Flame-Retardant Epoxy Nanocomposites

2019 ◽  
Vol 11 (43) ◽  
pp. 40951-40960 ◽  
Author(s):  
Zhida Zhang ◽  
Xueli Li ◽  
Yongshuai Yuan ◽  
Ye-Tang Pan ◽  
De-Yi Wang ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Epoxy Nanocomposites ◽  
Zinc Hydroxystannate

scholarly journals Improving flame retardancy of in-situ silica-epoxy nanocomposites cured with aliphatic hardener: Combined effect of DOPO-based flame-retardant and melamine

2020 ◽  
Vol 2 ◽  
pp. 100022
Author(s):  
Aurelio Bifulco ◽  
Dambarudhar Parida ◽  
Khalifah A. Salmeia ◽  
Sandro Lehner ◽  
Rolf Stämpfli ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Flame Retardancy ◽  
Combined Effect ◽  
Epoxy Nanocomposites ◽  
In Situ Silica

Zinc Hydroxystannate-Coated Mineral Grade Mg(OH)2 as Flame-Retardant and Smoke Suppression for Flexible PVC

2013 ◽  
Vol 652-654 ◽  
pp. 481-484 ◽  
Author(s):  
Chun Zheng Wang ◽  
Wei Hong Wu ◽  
Xia Ye ◽  
Lei Liu
Keyword(s):  
Flame Retardant ◽  
Vinyl Chloride ◽  
Smoke Suppression ◽  
Crosslinking Reaction ◽  
X Ray Diffraction ◽  
Limiting Oxygen Index ◽  
Smoke Suppressant ◽  
Poly Vinyl Chloride ◽  
Zinc Hydroxystannate ◽  
The Stability

A zinc hydroxystannate-coated mineral grade Mg(OH)2 (ZHSCMH) was synthesized as flame retardant and smoke suppressant for flexible poly (vinyl chloride). The powder of ZHSCMH was characterized by the x-ray diffraction (XRD) and scanning electron microscopy (SEM). The flame retardancy, smoke suppression and thermal behavior of PVC treated with ZHSCMH and mineral grade Mg(OH)2 were comparative studied by means of limiting oxygen index (LOI), smoke density rating (SDR), thermogravimetry (TG), differential thermogravimetry (DTG) and SEM. The results show that, ZHSCMH can be used as a high effective flame retardant and smoke suppressant for PVC. The flame retardant of ZHSCMH can effectively promote the crosslinking reaction of poly (vinyl chloride) (PVC) in the first stage, and improve the stability of the char residue in the second stage.

Preparation of zinc hydroxystannate nanocomposites coated by organophosphorus and investigation of their effect on mechanical properties and flame retardancy of poly(vinyl chloride)

RSC Advances ◽  
2015 ◽  
Vol 5 (120) ◽  
pp. 99291-99298 ◽  
Author(s):  
Ting-Ting Gao ◽  
Zhi-Wei Li ◽  
Lai-Gui Yu ◽  
Zhi-Jun Zhang
Keyword(s):  
Mechanical Properties ◽  
Synergistic Effect ◽  
Flame Retardant ◽  
Vinyl Chloride ◽  
Flame Retardancy ◽  
Poly Vinyl Chloride ◽  
Zinc Hydroxystannate

A novel organic–inorganic nanohybrid flame retardant was prepared. The organic flame retardant could not only surface modify to the inorganic flame retardant but also improve flame retardancy of inorganic flame retardant with the synergistic effect.

scholarly journals Flame-Retardant Mechanism and Mechanical Properties of Wet-Spun Poly(acrylonitrile-co-vinylidene chloride) Fibers with Antimony Trioxide and Zinc Hydroxystannate

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2442
Author(s):  
Ji Su Kim ◽  
Ji Eun Song ◽  
Daeyoung Lim ◽  
Heejoon Ahn ◽  
Wonyoung Jeong
Keyword(s):  
Flame Retardant ◽  
Gas Phase ◽  
Condensed Phase ◽  
Gas Chromatography Mass Spectrometry ◽  
Antimony Trioxide ◽  
Pyrolysis Gas ◽  
Limiting Oxygen Index ◽  
Vinylidene Chloride ◽  
Zinc Hydroxystannate ◽  
Poly Acrylonitrile

To produce flame retardant poly(acrylonitrile-co-vinylidene chloride) (PANVDC) fibers with limiting oxygen index (LOI) values above 28%, flame retardants are added to fibers. Because antimony trioxide (ATO) used widely for PANVDC is suspected as a carcinogen, non-toxic zinc hydroxystannate (ZHS) could be the alternative for reduction of ATO usage. Moreover, a flame retardant efficiency of the combination of ATO with ZHS could be expected because it was reported that ATO resists flame in the gas phase, whereas ZHS reacts in the condensed phase. Therefore, this study discussed the flame retardant mechanisms of ATO and ZHS in PANVDC, and evaluated the efficiency of the combination. PANVDC fibers with ATO and ZHS in 15 phr were produced by wet spinning. When ZHS was added, a more cyclized structure was detected (e.g., 1-methylnaphthalene) through pyrolysis−gas chromatography-mass spectrometry (Py-GC/MS). As a result of SEM-EDX analysis, Sb and Cl hardly remained in char layers of PANVDC-ATO; meanwhile, Zn, Sn, and Cl remained in that of PANVDC-ZHS. This implied that SbCl3 from reaction of ATO and HCl reacts in the gas phase, whereas ZnCl2 and SnCl2 from ZHS and HCl promotes the cyclization reaction of PANVDC in the condensed phase. The LOI values of PANVDC, PANVDC-ATO, and PANVDC-ZHS were 26.4%, 29.0%, and 33.5%, respectively. This suggests that ZHS is a highly effective for PANVDC. Meanwhile, the LOI of PANVDC containing ATO-ZHS mixture is 31.0%. The combination of ATO and ZHS exhibited no efficiency. The addition of ATO and ZHS slightly reduced the tenacities of the fibers, respectively, 3.11 and 3.75 from 4.42 g/den.

Biomimetic Synthesis of Zinc Hydroxystannate-Coated Calcium Carbonate and its Application in PVC

2011 ◽  
Vol 197-198 ◽  
pp. 277-280
Author(s):  
Jian Zhong Xu ◽  
Fei Peng ◽  
Yun Hong Jiao
Keyword(s):  
Calcium Carbonate ◽  
Flame Retardant ◽  
Sodium Dodecyl ◽  
Sodium Dodecyl Benzene Sulfonate ◽  
Xrd Analysis ◽  
Biomimetic Synthesis ◽  
Calcite Crystal ◽  
Dodecyl Benzene Sulfonate ◽  
Diffraction Peaks ◽  
Zinc Hydroxystannate

Calcium carbonate and zinc hydroxystannate-coated calcium carbonate (ZHSCC) was prepared by biominetic synthesis in template of sodium dodecyl benzene sulfonate (SDBS), and was characterized by XRD, SEM and TG/DSC, moreover, the flame retardant property of ZHSCC in PVC was studed by LOI. The XRD analysis clearly showed the diffraction peaks of zinc hydroxystannate (ZHS) in ZHSCC and calcite crystal structure of calcium carbonate. The TG/DSC and SEM results showed that ZHSCC product was roughly spherical with the size of was about 4 μ. The LOI of PVC/ZHSCC blend increased 5.5 units which showed that ZHSCC had a good flame retardant efficiency for PVC.

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