中山大学学报(自然科学版)
中山大學學報(自然科學版)
중산대학학보(자연과학판)
ACTA SCIENTIARUM NATURALIUM UNIVERSITATIS SUNYATSENI
2007年
z1期
231-232
,共2页
李凯夫%许少宏%温福泉%胡传双%关丽涛
李凱伕%許少宏%溫福泉%鬍傳雙%關麗濤
리개부%허소굉%온복천%호전쌍%관려도
MDF%甲醛释放%流变性
MDF%甲醛釋放%流變性
MDF%갑철석방%류변성
MDF%formaldehyde emission%rheological mechanism
在MDF甲醛释放蠕变过程中,MDF甲醛释放驱动力保持不变时,MDF甲醛释放量随时间延长而变化.马克斯韦模型可在甲醛释放驱动力为恒定条件下,较好地模拟MDF的甲醛释放流变性的规律;凯尔文模型较好地模拟了MDF甲醛延时释放特征;勃格模型是描述MDF甲醛释放蠕变的重要公式,它较好地模拟了MDF甲醛常规释放蠕变特征,换算得到的公式可较好地描述锯切后试件放置时间对MDF甲醛释放量的影响规律,是描述和预测MDF甲醛释放松弛特性的有价值模型;也可较好地描述干燥器测试时间对MDF甲醛释放量的影响规律,是描述和预测MDF甲醛释放蠕变特性的有价值模型.
在MDF甲醛釋放蠕變過程中,MDF甲醛釋放驅動力保持不變時,MDF甲醛釋放量隨時間延長而變化.馬剋斯韋模型可在甲醛釋放驅動力為恆定條件下,較好地模擬MDF的甲醛釋放流變性的規律;凱爾文模型較好地模擬瞭MDF甲醛延時釋放特徵;勃格模型是描述MDF甲醛釋放蠕變的重要公式,它較好地模擬瞭MDF甲醛常規釋放蠕變特徵,換算得到的公式可較好地描述鋸切後試件放置時間對MDF甲醛釋放量的影響規律,是描述和預測MDF甲醛釋放鬆弛特性的有價值模型;也可較好地描述榦燥器測試時間對MDF甲醛釋放量的影響規律,是描述和預測MDF甲醛釋放蠕變特性的有價值模型.
재MDF갑철석방연변과정중,MDF갑철석방구동력보지불변시,MDF갑철석방량수시간연장이변화.마극사위모형가재갑철석방구동력위항정조건하,교호지모의MDF적갑철석방류변성적규률;개이문모형교호지모의료MDF갑철연시석방특정;발격모형시묘술MDF갑철석방연변적중요공식,타교호지모의료MDF갑철상규석방연변특정,환산득도적공식가교호지묘술거절후시건방치시간대MDF갑철석방량적영향규률,시묘술화예측MDF갑철석방송이특성적유개치모형;야가교호지묘술간조기측시시간대MDF갑철석방량적영향규률,시묘술화예측MDF갑철석방연변특성적유개치모형.
The behavior of formaldehyde emission from medium density fiberboard (MDF) is a function of time elapsed. However, the correlation between formaldehyde emission and the time elapsed is still not clear yet. Here the behavior of the formaldehyde emission from MDF was modeled using the rheological theory. Formaldehyde Emission from MDF was divided into three components of instantaneous, time delayed and permanent when the driving force of formaldehyde emission from MDF is set to be fixed. The Maxwell model, Kelvin model, and Burger model were used to curve-fit the three different time-related components, individually. The results show that the effects of the time on the three different time-related components of formaldehyde emission from MDF can be well modeled by the Maxwell, Kelvin, and Burge formulae.