A new synergistic effect in the smoke suppression of plasticized poly(vinyl chloride) by mixed-metal Cu(II) oxides

2008 ◽  
Vol 14 (1) ◽  
pp. 16-20 ◽  
Author(s):  
W.-K. Ho ◽  
J.K. Walker ◽  
S.V. Orski ◽  
T.W. Fuller ◽  
A.G. Zestos ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Vinyl Chloride ◽  
Smoke Suppression ◽  
Mixed Metal ◽  
Poly Vinyl Chloride

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.

scholarly journals Efficient Thermo-Stability and Smoke-Suppression Properties of La Doping Mg-Al LDHs on PVC Nanocomposites

2021 ◽  
Vol 57 (4) ◽  
pp. 297-308
Author(s):  
Jinjie Zhang ◽  
Bin Xu ◽  
Hengxu Wang ◽  
Fupeng Jin ◽  
Jinfeng Dai ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Thermal Stability ◽  
Vinyl Chloride ◽  
Layered Double Hydroxides ◽  
Thermal Aging ◽  
Smoke Suppression ◽  
Molar Ratio ◽  
La Doping ◽  
Poly Vinyl Chloride ◽  
Double Hydroxides

Despite the advantages of the non-flammable, good performance and low price, poly (vinyl chloride) (PVC) still suffer from poor thermal stability, restricting its melting process and applications. Although addition of some heat stabilizers can be used to improve the low thermal stability, so far, they normally compromise the environmental issues and smoke density of PVC during combustion. In this work, a series of La doping Mg-Al layered double hydroxides (LaLDHs) with different molar ratio of La3+ / Al3+ were successfully synthesized by coprecipitation-hydrothermal method and characterized by X-ray diffraction (XRD), Fourier transform infrared spectrum (FT-IR), Scanning Electron Microscopy (SEM) and Transmission electron microscopy (TEM). The results showed that the as-prepared LaLDHs exhibit plate-like morphology with a lateral size around 100-180 nm. The different as-prepared LaLDHs were introduced into PVC as heat stabilizer to prepare PVC nanocomposites. The thermal stability and smoke suppression of PVC nanocomposites were investigated by TGA, thermal aging, Congo red and smoke density rating test (SDR), respectively. All the results demonstrated that PVC-LaLDHs2 nanocomposites containing 2% LaLDHs2 (the molar ratio of La3+ / Al3+ is 1 / 3) were optimized, which achieved the maximal T50% value of 337.2 oC, minimal SDR value of 45.6%, and prolonged the thermal aging time from less than 10mins to 90mins, respectively thermal stability time from 1242s to 2751s. In addition, the tensile strength and elastic modulus of PVC-LaLDHs2 respectively increased by 84.4% (56.6 MPa) and 75.5% (1019.4 MPa) with little affecting elongation at break of PVC. LDHs (layered double hydroxides); rare earth ions; thermal stability; smoke suppression; poly (vinyl chloride)

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.

Cone calorimetric study of copper-promoted smoke suppression and fire retardance of poly(vinyl chloride)

2003 ◽  
Vol 82 (1) ◽  
pp. 15-24 ◽  
Author(s):  
William H. Starnes ◽  
Robert D. Pike ◽  
Jenine R. Cole ◽  
Alexander S. Doyal ◽  
Edward J. Kimlin ◽  
...  
Keyword(s):  
Vinyl Chloride ◽  
Smoke Suppression ◽  
Calorimetric Study ◽  
Poly Vinyl Chloride ◽  
Fire Retardance
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