灰层增大速度大，灰中含残炭量不稳定。

Ash layers increase speed big, ash contains carbon residue quantity is not stable.

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纳米铝酸锌的加入明显地改善了软PVC试样的热分解性能，样品的最终残炭量由11.22%提高到19.55%；

The thermal degradation performance of the above flexible PVC sample is improved obviously, The final amount of residual carbon increased from 11.22% to 19.55%;

youdao

添加量为3.0份时，纳米铝酸锌的加入明显地改善了软PVC试样的热分解性能，样品的最终残炭量由11.22%提高到17.33；

The thermal degradation performance of flexible PVC added 3.0% mass magnesium aluminate is improved obviously, The final amount of residual carbon increased from 11.22% to 17.33%;

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