Sb-intercalated layered double hydroxides-poly(vinyl chloride) nanocomposites: Preparation, characterization, and thermal stability

2015 ◽  
Vol 132 (39) ◽  
pp. n/a-n/a ◽  
Author(s):  
Shu-Ting Liu ◽  
Ping-Ping Zhang ◽  
Kang-Kang Yan ◽  
Yuan-Hu Zhang ◽  
Ying Ye ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Vinyl Chloride ◽  
Layered Double Hydroxides ◽  
Poly Vinyl Chloride ◽  
Double Hydroxides

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)

scholarly journals Thermal stability and thermal aging of poly(vinyl chloride)/MgAl layered double hydroxides composites

2016 ◽  
Vol 34 (5) ◽  
pp. 542-551 ◽  
Author(s):  
Hong-mei Zhang ◽  
Shu-hua Zhang ◽  
Polite Stewart ◽  
Chen-hui Zhu ◽  
Wei-jun Liu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Vinyl Chloride ◽  
Layered Double Hydroxides ◽  
Thermal Aging ◽  
Poly Vinyl Chloride ◽  
Double Hydroxides

Layered double hydroxides as thermal stabilizers for Poly(vinyl chloride): A review

2021 ◽  
Vol 211 ◽  
pp. 106198
Author(s):  
Yixuan Guo ◽  
Fabrice Leroux ◽  
Weiliang Tian ◽  
Dianqing Li ◽  
Pinggui Tang ◽  
...  
Keyword(s):  
Vinyl Chloride ◽  
Layered Double Hydroxides ◽  
Poly Vinyl Chloride ◽  
Double Hydroxides
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