英语翻译A relatively large laboratory-scale sample of a commercial type of PVC material usually used in building,flooring,home furnishings,clothing,etc.,is thermally decomposed under carefully controlled conditions.Dehydrochlorination of PVC mate

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英语翻译A relatively large laboratory-scale sample of a commercial type of PVC material usually used in building,flooring,home furnishings,clothing,etc.,is thermally decomposed under carefully controlled conditions.Dehydrochlorination of PVC mate
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英语翻译A relatively large laboratory-scale sample of a commercial type of PVC material usually used in building,flooring,home furnishings,clothing,etc.,is thermally decomposed under carefully controlled conditions.Dehydrochlorination of PVC mate
英语翻译
A relatively large laboratory-scale sample of a commercial type of PVC material usually used in building,flooring,home furnishings,clothing,etc.,is thermally decomposed under carefully controlled conditions.Dehydrochlorination of PVC material at high temperature (up to 600 °C) has been studied.The results show that dehydrochlorination beginning at the temperature of 150 °C can be divided into three stages:low-temperature moderation in the temperature interval 150-180 °C,medium-temperature acceleration in the interval 180-250 °C,and high-temperature moderation in the interval 250-280 °C.The release of chlorine as HCl from PVC materials,at the same temperature,is highest in oxygen,and it increases with an increase of oxygen content.The release of chlorine as HCl is higher by about 5-10% in hydrogen than in nitrogen.In addition,the effect of additives such as dioctyl phthalate (DOP) and calcium stearate (CaSt2) on dehydrochlorination of PVC is studied.The release of chlorine as HCl is markedly reduced by additives.多谢网友不吝赐教

英语翻译A relatively large laboratory-scale sample of a commercial type of PVC material usually used in building,flooring,home furnishings,clothing,etc.,is thermally decomposed under carefully controlled conditions.Dehydrochlorination of PVC mate
我们在严格控制的环境中对某种商业类PVC材料进行了相对较大实验室规模采样加热分解实验,该材料常用于建筑、地板以及服饰等领域.在高温条件下（高达600 °C）对PVC材料进行脱去氯化氢实验结果显示在150°C时开始的脱去氯化氢过程可以分为三个阶段：在150-180°C之间发生的低温减速阶段,180-250°C之间的中温加速阶段以及250-280°C之间的高温减速阶段.同等温度条件下,PVC材料中以HCI的形式释放出的氯浓度在氧气条件下比在氮气条件下高5-10%.另外,我们还对在PVC脱去氯化氢过程中添加诸如酸二辛酯（DOP）和硬脂酸钙（CaSt2）之类的添加剂的效果进行了研究.加入添加剂之后以HCI形式释放的氯明显减少.

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