2007年12月1日 · The TGA method is well known as a good approach to prove stabiliser consumption and induced degradation. The TGA results indicate random scission of the main chain as the initiation mechanism of degradation of POM. Depression of the onset temperature of the TG curves is attributable to continuous stabiliser consumption.

2004年10月1日 · The influence of reprocessing and thermooxidative ageing on the degradation behaviour of a commercial poly(oxymethylene) (POM) copolymer was studied by means of thermogravimetric analysis (TGA) under nitrogen and air atmosphere. Five heating rates were used to evaluate activation energies at several degrees of conversion.

2006年3月1日 · The influence of reprocessing and thermooxidative ageing on the degradation behaviour of a commercial poly(oxymethylene) (POM) copolymer was studied by means of thermogravimetric analysis (TGA) under nitrogen and air atmosphere. Five heating rates were used to evaluate activation energies at several degrees of conversion.

2022年10月31日 · In this Review, we will explore the combination of polymeric soft matter matrices with molecular metal oxides—polyoxometalates (POMs)—as a unique class of composites where structure, reactivity, and function can be controlled on the molecular level, while giving macroscopic materials suitable for technological device integration, e.g., as membra...

2011年8月1日 · 本文利用220℃等温热降解和升温热重分析（TGA），分别评价了稳定剂. 共聚酰胺（COPA）、聚酰胺6（PA）、乙烯．乙烯醇共聚物（EVOH）以及. CoPA尼VOH在不同气氛条件下对POM的热稳定性的影响。 结果表明，稳定. 剂在氮气气氛中的稳定效果相当优异，极少量（O．2％）的稳定剂便能显著提. 高POM的热分解温度。 在空气中稳定剂能够消耗降解产生的甲醛，有效地. 降低POM在220。 C下的失重率。 当COPA、PA含量增加到1．2％时，体系的. 热 …

The influence of processing, physical ageing and UV-irradiation on the degradation behaviour of heat-stabilized poly (oxymethylene) (POM) homo- and copolymers was studied by means of...

2006年3月1日 · The influence of reprocessing and thermooxidative ageing on the degradation behaviour of a commercial poly (oxymethylene) (POM) copolymer was studied by means of thermogravimetric analysis...

通过热重分析（TGA）研究了加工，物理老化和紫外线辐射对热稳定的聚甲醛（POM）均聚物和共聚物降解行为的影响。 为此，已经对注塑样品进行了处理，随后进行了多达六次的再处理，并通过在60℃的烤箱中进行老化进行了处理。 长达八周，并在氙气测试仪中进行了紫外线照射。 众所周知，均聚物和共聚物由于其特定的化学结构而以不同的方式降解。 TGA表明主链的随机断裂是降解的起始机制。 后续过程取决于材料条件和降解处理（纯热负荷或紫外线辐射）。 如通过凝胶 …

通过热重分析（tga），在氮气和空气气氛下，研究了后处理和热氧化老化对商用聚甲醛（pom）共聚物降解行为的影响。 使用五个加热速率来评估几个转化度下的活化能。

2009年3月1日 · An increase in the thermal stability of several new additives on polyoxymethylene (POM) was attempted via thermogravimetric analysis (TGA) (static state) and balance torque testing (dynamic state), which truly reflected the processing in practice.