板坯预热及板坯初始温度对干法纤维板热压传热的影响

Influence of Mat′s Pre-Heating and Initial Temperature on Heat-Conduction in the Hot-Pressing Process of Dry-Process Fiberboard

将一部分干法纤维板的板坯在不同温度和时间条件下进行热板接触预热 ,而另一部分不进行预热但有不同的初始温度 ,测定它们在热压过程中中心层的温度。通过比较分析其温度变化曲线 。

During the process of hot pressing,temperatures of all the mats′ core layer were measured,some of which were pre heated conventionally under different temperature and time,while others were pressed without the process of pre heating,but the initial temperature was different from the former.Based on the data of experiments,laws of the influence of pre heating and initial temperature to pressing heat conduction were drawn after the curves of the core layer′s temperature had been analyzed and compared.