Highly thermostable and durably flame-retardant unsaturated polyester modified by a novel polymeric flame retardant containing Schiff base and spirocyclic structures

2018 ◽  
Vol 344 ◽  
pp. 419-430 ◽  
Author(s):  
Dan Zhao ◽  
Juan Wang ◽  
Xiu-Li Wang ◽  
Yu-Zhong Wang
Keyword(s):  
Schiff Base ◽  
Flame Retardant ◽  
Unsaturated Polyester

New application for aromatic Schiff base: High efficient flame-retardant and anti-dripping action for polyesters

2018 ◽  
Vol 336 ◽  
pp. 622-632 ◽  
Author(s):  
Jia-Ning Wu ◽  
Lin Chen ◽  
Teng Fu ◽  
Hai-Bo Zhao ◽  
De-Ming Guo ◽  
...  
Keyword(s):  
Schiff Base ◽  
Flame Retardant ◽  
High Efficient

scholarly journals A biobased Schiff base from protocatechualdehyde and its application in flame-retardant, low-smoke epoxy resin systems

RSC Advances ◽  
2019 ◽  
Vol 9 (53) ◽  
pp. 30815-30822 ◽  
Author(s):  
Weiqi Xie ◽  
Shiwen Huang ◽  
Shumei Liu ◽  
Jianqing Zhao
Keyword(s):  
Schiff Base ◽  
Flame Retardant ◽  
Epoxy Resin ◽  
Epoxy Resins ◽  
Schiff Base Compound ◽  
Base Compound

A novel bio-based Schiff base compound PH-ODA was successfully synthesized and acted as a carbonization agent of IFRs for fire-safe epoxy resins.

scholarly journals Chain Extension and Synergistic Flame-Retardant Effect of Aromatic Schiff Base Diepoxide on Polyamide 6/Aluminum Diethylphosphinate Composites

Materials ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2217 ◽  
Author(s):  
Tianxiang Liang ◽  
Jianan Cai ◽  
Shumei Liu ◽  
Hualin Lai ◽  
Jianqing Zhao
Keyword(s):  
Schiff Base ◽  
Flame Retardant ◽  
Flame Retardants ◽  
Polyamide 6 ◽  
Chain Extension ◽  
Cone Calorimetry ◽  
The Matrix ◽  
Flame Retarded ◽  
Ul 94 ◽  
Synergistic Flame Retardant

A way to suppress the deterioration in mechanical properties of polyamide 6 (PA6) is required, especially with high loading of flame retardants in the matrix. In this study, a novel aromatic Schiff base diepoxide (DES) was synthesized. It exhibited an efficient chain extension effect on PA6 and a synergistic flame-retardant effect with aluminum diethylphosphinate (AlPi) for PA6. The PA6 composite with 16 wt.% AlPi only passed UL-94 V-0 rating at 1.6 mm thickness, while the combination of 1.5 wt.% DES with 13 wt.% AlPi induced PA6 to achieve a UL-94 V-0 rating at 0.8 mm thickness. The tensile, flexural, and Izod notched impact strengths were increased by 16.2%, 16.5%, and 24.9%, respectively, compared with those of V-0 flame-retarded PA6 composites with 16 wt.% AlPi. The flame-retarded mechanism of PA6/AlPi/DES was investigated by cone calorimetry and infrared characterization of the char residues and pyrolysis products. These results showed that DES had a synergistic effect with AlPi in condensed-phase flame retardation by promoting the production of aluminum phosphorus oxides and polyphosphates in the char residues.

scholarly journals Flame Retardancy and Thermal Behavior of an Unsaturated Polyester Modified with Kaolinite–Urea Intercalation Complexes

Molecules ◽  
2020 ◽  
Vol 25 (20) ◽  
pp. 4731
Author(s):  
Lina Yue ◽  
Junfei Li ◽  
Xuan Zhou ◽  
Yingjuan Sun ◽  
Ming Gao ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Flame Retardancy ◽  
Unsaturated Polyester ◽  
Smoke Suppression ◽  
X Ray Diffraction ◽  
Intercalation Complex ◽  
Limiting Oxygen Index ◽  
Intercalation Complexes ◽  
Synergistic Agent ◽  
Micro Morphology

Organic modified kaolinite-urea intercalation complex (KUIC) was prepared using dimethyl sulfoxide (DMSO) as the precursor of kaolinite intercalation. Its structure was characterized by Fourier transform infrared (FTIR) and X-ray diffraction (XRD). Subsequently, as a synergistic agent, KUIC was combined with flame retardant ammonium polyphosphate (APP) to improve the flame retardant and smoke suppression performance of unsaturated polyester (UP) resin. A cone calorimeter (CONE) was used to study its flame retardancy and smoke suppression, and a scanning electron microscope (SEM) and thermogravimetry (TG) were used to study the micro morphology of the char and flame retardant mechanism. The results show that 12 phr of APP and 3 phr of KUIC were doped into UP to obtain a 28.0% limiting oxygen index (LOI) value. Compared with UP, the heat release rate and smoke production of UP/APP/KUIC composites were greatly decreased. Meanwhile, KUIC indeed enhanced the mechanical properties of UP.

Sign in / Sign up

Export Citation Format

Share Document