A nano graphene oxide/α-zirconium phosphate hybrid for rigid polyvinyl chloride foams with simultaneously improved mechanical strengths, smoke suppression, flame retardancy and thermal stability

2019 ◽  
Vol 121 ◽  
pp. 180-188 ◽  
Author(s):  
Zhengzhou Wang ◽  
Zhenyu Huang ◽  
Xiaoyan Li ◽  
Jian-an Zhou
Keyword(s):  
Thermal Stability ◽  
Graphene Oxide ◽  
Polyvinyl Chloride ◽  
Flame Retardancy ◽  
Zirconium Phosphate ◽  
Smoke Suppression ◽  
Nano Graphene ◽  
Mechanical Strengths

One-step in situ synthesis of a novel α-zirconium phosphate/graphene oxide hybrid and its application in phenolic foam with enhanced mechanical strength, flame retardancy and thermal stability

RSC Advances ◽  
2016 ◽  
Vol 6 (78) ◽  
pp. 74903-74912 ◽  
Author(s):  
Xiaoyan Li ◽  
Zhengzhou Wang ◽  
Lixin Wu ◽  
Tsungyen Tsai
Keyword(s):  
Thermal Stability ◽  
Graphene Oxide ◽  
Mechanical Strength ◽  
Flame Retardancy ◽  
Zirconium Phosphate ◽  
In Situ Synthesis ◽  
Phenolic Foam ◽  
One Step ◽  
Mechanical Strengths

A novel α-zirconium phosphate/graphene oxide hybrid was synthesized, and its incorporation into phenolic foam can greatly improve mechanical strengths, thermal stability and flame retardancy of the foam.

Preparation of a silica nanospheres/graphene oxide hybrid and its application in phenolic foams with improved mechanical strengths, friability and flame retardancy

RSC Advances ◽  
2015 ◽  
Vol 5 (121) ◽  
pp. 99907-99913 ◽  
Author(s):  
Xiaoyan Li ◽  
Zhengzhou Wang ◽  
Lixin Wu
Keyword(s):  
Thermal Stability ◽  
Graphene Oxide ◽  
Flame Retardancy ◽  
Silica Nanospheres ◽  
Mechanical Strengths

A silica nanospheres/graphene oxide hybrid (SGO) was synthesized, and it is found that SGO can greatly improve the mechanical strengths, thermal stability and flame retardancy of phenolic foams.

Comparison of silicate impregnation methods to reinforce Chinese fir wood

Holzforschung ◽  
2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Ping Li ◽  
Yuan Zhang ◽  
Yingfeng Zuo ◽  
Yiqiang Wu ◽  
Guangming Yuan ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Heat Release ◽  
Flame Retardancy ◽  
Chinese Fir ◽  
Smoke Suppression ◽  
Impregnation Method ◽  
Residual Rate ◽  
Smoke Production ◽  
Human Respiration ◽  
Strengthen Effect

AbstractInorganic impregnation strengthening of Chinese fir wood was carried out to improve the strength, dimensional stability, flame retardancy, and smoke suppression of Chinese fir wood. Sodium silicate was used as reinforcement, a sulfate and phosphate mixtures were used as a curing agent, and Chinese fir wood was reinforced by the respiratory impregnation method (RIM) that imitating human respiration and vacuum progressive impregnation method (VPIM). The weight percentage gain (WPG), density increase rate, distribution of modifier, bending strength (BS), compressive strength (CS), hardness, and water resistance of unreinforced Chinese fir wood from the VPIM and RIM were compared. It was found that RIM could effectively open the aspirated pits in Chinese fir wood, so its impregnation effect, strengthen effect and dimension stabilization effects were the best. RIM-reinforced Chinese fir wood was filled with silicate both horizontally and vertically. At the same time, the transverse permeability of silicate through aspirated pits was significantly improved. The chemical structure, crystalline structure, flame retardancy, smoke suppression, and thermal stability of VPIM- and RIM-reinforced Chinese fir wood were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), cone calorimeter (CONE), and thermogravimetric analysis (TGA). The results indicated that although the crystallinity of RIM-reinforced Chinese fir wood decreased the most, more chemical crosslinking and hydrogen bonding were formed in the wood, and the strengthen effect was still the best. Compared with VPIM-reinforced Chinese fir wood, RIM-reinforced Chinese fir wood had lower heat release rate (HRR), peak-HRR, mean-HRR, total heat release (THR), smoke production rate (SPR), and total smoke production (TSP), higher thermal decomposition temperature and residual rate. It was indicated that RIM-reinforced Chinese fir wood was a better flame retardant, and has a smoke suppression effect, thermal stability, and safety performance in the case of fire.

The influence of zinc compounds on thermal stability and flame retardancy of wood flour polyvinyl chloride composites

2022 ◽  
Vol 320 ◽  
pp. 126203
Author(s):  
Yiqun Fang ◽  
Aojing Xue ◽  
Fengqiang Wang ◽  
Zhijun Zhang ◽  
Yongming Song ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Polyvinyl Chloride ◽  
Flame Retardancy ◽  
Wood Flour ◽  
Zinc Compounds

Flame retardancy and smoke suppression of molybdenum trioxide doped magnesium hydrate in flexible polyvinyl chloride

2020 ◽  
Vol 31 (9) ◽  
pp. 2108-2121
Author(s):  
Li Dang ◽  
Zhihui Lv ◽  
Xinliu Du ◽  
Delin Tang ◽  
Yuntian Zhao ◽  
...  
Keyword(s):  
Polyvinyl Chloride ◽  
Flame Retardancy ◽  
Molybdenum Trioxide ◽  
Smoke Suppression
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