KINETIC ASPECTS OF AGING OF POLY(VINYL CHLORIDE)-BASED POLYMER MATERIALS
KINETIC ASPECTS OF AGING OF POLY(VINYL CHLORIDE)-BASED POLYMER MATERIALS
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DOI：
10.1081/ppt-100100048
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发表时间：
2000-05
影响因子：
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通讯作者：
G. Zaikov;K. Gumargalieva;T. V. Pokholok;Y. Moiseev;V. Zaikov
中科院分区：
文献类型：
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作者：
G. Zaikov;K. Gumargalieva;T. V. Pokholok;Y. Moiseev;V. Zaikov
本文介绍了用各种技术对在模型和气候条件下老化或长期使用（在253-301 K温度下15 - 30年）的增塑聚氯乙烯（PVC）样品进行综合研究的结果及其老化机理。使用热重、色谱、紫外和红外光谱技术、凝胶渗透色谱、压汞法和用于测量材料的机械强度性能的技术（例如，拉伸强度和应变），我们已经表明，由于增塑剂或其它添加剂的扩散控制解吸，增塑PVC的使用和功能性质损失。关于老化条件的信息可以从PVC样品在起作用过程中或其暴露于不同影响的过程中的重量损失或添加剂消耗的实验时间历史中得出。这些实验数据用于制定这些系统中的老化过程的数学描述，并预测使用中的此类材料的寿命。文章的实验部分之前的文献综述传达了作者的观点的过程中发生的PVC材料老化的作用下的自然和人工条件。
The results of the complex study of samples of plasticized poly(vinyl chloride) (PVC) subjected to aging under model and climatic conditions or being in use for a long time (from 15 to 30 years at 253–301 K) studied by various techniques and the mechanism of their aging are presented in the article. Using the thermogravimetric, chromatographic, ultraviolet and infrared spectroscopic techniques, gel permeation chromatography, mercury porosimetry, and techniques for measuring mechanical strength properties of the materials (e.g., tensile strength and strain), we have shown that the service and functional properties of plasticized PVC were lost as a result of diffusion-controlled desorption of a plasticizer or other additives. Information about the aging conditions can be derived from the experimental time histories of the weight loss or additive depletion in the course of functioning of PVC samples or their exposure to different impacts. These experimental data are used to formulate a mathematical description of the aging process in these systems and to predict the lifetime of such materials in use. The experimental part of the article is preceded with the literature review conveying the authors' point of view on the processes going on in PVC materials by aging under the action of natural and artificial conditions.