燃烧过程中有发泡膨胀现象，样品离火后迅速炭化自熄，无熔融、滴落现象，发烟量小，是一类较好的膨胀型阻燃剂。

The samples foam and expand during the combustion process, and they carbonize and extinguish right after being deviated from fire, without melting and dropping and with low smoking.

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采用超微孔高密度聚胺酯发泡保温层，减少冷量流失，保温效果佳，实现节能降耗。

Using insulation layer of ultramicropore high-density polyurethane foam, loss of cooling capacity is reduced to ensure better insulating effect and to achieve energy saving.

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探讨了相应共聚物在发泡和热处理过程中发生的“原位成环”反应及机理，并利用差示扫描量热分析（DSC）和红外光谱（FTIR）进行了验证。

The mechanism of in-situ cyclization during the foaming and heat treatment was studied using differential scanning calorimeter (DSC) and Fourier transform infrared spectrometer (FTIR).

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