The thermal stabilization behavior and mechanism of a metal organic framework with high thermal stability towards PVC

Abstract

Thermal stabilizer plays a crucial role in improving the thermal stability of PVC samples. However, the effect of thermal behavior of stabilizer itself on PVC sample has been rarely reported....

Synergistic Modification of PVC with Nitrogen-Containing Heterocycle and Tung-Oil Based Derivative for Enhanced Heat Stabilization and Plasticization Behavior

“…It is found that Atz can both absorb HCl and replace Cl atom on PVC chain, and can also eliminate the unstable structure causing heat degradation. The above factors are all favorable for inhibiting the initial degradation and coloring [23]. Congo red test (Fig.…”

“…The introduction of new biomass-based derivatives with special thermally stable functional groups and flexible long carbon chains into the PVC chains via covalent bonds is a promising choice for constructing self-stabilized, self-plasticized and flexible PVC polymers. Wang et al attached Mannich base derived from laurene to PVC through covalent bonding, and successfully developed a PVC material with both internal plasticization and internal thermal stability [23]. However, compared with commercial PVC samples, the initial and long-term thermal stabilities of the prepared PVC materials were not significantly improved.…”

“…Due to its high nitrogen content, Atz has a high absorption ability for hydrogen chloride, and is used to synthesize two-dimensional layered complex [Zn(ttr)(OAc)] [25,26]. When [Zn(ttr)(OAc)] was used as the thermal stabilizer, the thermal stability of the resulting PVC product was significantly improved [23]. Similarly, covalent grafting of Atz onto PVC structure can help construct self-stabilized PVC polymer.…”

Establishment of an efficient and accurate thermal stability evaluation method based on machine vision and its application in PVC thermal degradation

“…due to its low cost, good transparency, thermal insulation, and convenience. 3–5 However, pure PVC has poor thermal stability and may decompose at processing temperature (100–200 °C), producing hydrogen chloride gas, which can lead to discoloration and decreased mechanical properties of PVC products, ultimately reducing their service life. 6–8 Adding various heat stabilizers during the preparation process is the most effective way to improve the thermal stability performance of PVC samples.…”