【摘要】 论述了热压法制造粉煤灰（ｆｌｙ＿ａｓｈ）刨花板工艺。试验选取热压温度、热压时间、粉煤灰／（粉煤灰＋水泥）、灰木比、水灰比、添加剂和板子密度等工艺变量进行了研究。结果表明：（１）用速生杨和南京热电厂Ⅰ级电除尘粉煤灰作主要原料制造粉煤灰刨花板是可行的。（２）粉煤灰用量占总灰量（即粉煤灰／（粉煤灰＋水泥）的６０％～７０％时制板仍然能达到冷压法水泥刨花板国家行业标准要求。但随着粉煤灰用量所占比例的增加，板子强度先呈上升趋势，到６０％以后又呈下降趋势，６０％时板各项性能指标较好。（３）板子密度对板子性能影响极其显著，灰木比其次。建议：粉煤灰／（粉煤灰＋水泥）＝６０％时，板密度１２００ｋｇ／ｃｍ３，灰木比为２５、水灰比为０４，强碱性添加剂用量为９％，活性剂用量为４％，热压温度１２０℃左右，热压时间１５ｍｉｎ／ｍｍ板厚为宜。（４）热压法粉煤灰刨花板相对于冷压法制板具有初强度高、生产效率高的优点。更多还原

【Abstract】 The paper mainly discussed the technology of manufacturing fly ash particleboard by hot pressing. Processing parameters related to board properties were studied and analyzed. It was concluded as follows: 1 Adopting electrical fly ash to make fly ash particleboard was practicable with cement and active agent added through hot pressing. 2 The effects of board density on board properties were significant. When the ratio of fly ash to (fly ash +cement) was 0.6, the ideal value of other parameters was suggested as follows: board density 1200 kg/cm 3; (fly ash+cement)/wood 2 5; water/(fly ash+cement) 0.4; NaOH content 9%; pressing temperature 120℃; pressing time 1.5 min/mm. 3 Compared with fly ash board by cold pressing, the board made through hot pressing had two advantages, i.e., high initial Strength and high production efficiency.更多还原