木材科学与技术2024，Vol.38Issue(4)：51-58,8.DOI:10.12326/j.2096-9694.2024058
硫氧镁水泥基蔗渣板的制备工艺及抗泛霜性探究
Manufacture Process and Frost Resistance of Magnesium Oxysulfide Cement-Based Bagasse Board
摘要
Abstract
Using untreated bagasse as raw material and magnesium oxysulfide cement as adhesive,a one-step forming method was used to manufacture magnesium oxysulfide cement-based bagasse board(MOCBB).The effects of oxygen sulfur ratio(the ratio of active magnesium oxide and magnesium sulfate heptahydrate),binder ratio(the mass ratio of magnesium oxysulfide cement and bagasse),hot pressing temperature,moisture content of raw materials,and types of additives(emulsified paraffin,aluminum hydroxide,and ammonium dihydrogen phosphate)on the properties of bagasse board were investigated.The results showed that under the conditions of an oxygen-sulfur ratio of 5,a binder ratio of 3∶7,a raw material moisture content of 20%,and a hot pressing temperature of 80℃,the density of the MOCBB was 0.86 g/cm3,the modulus of rupture was 16 MPa,the modulus of elasticity was 1 980 MPa,the internal bonding strength was 0.4 MPa,and the 2-hour water thickness swelling rate was 4.6%,which met the physical and mechanical performance requirements of the flame-retardant P2 type fire-retardant particleboard(flame-retardant furniture type particleboard used in the dry state)in GB/T 39032-2020""Difficult-flammable particleboard".The formaldehyde release classification met the ENF level requirements in GB/T 39600-2021"Formaldehyde emission grading for wood-based panel and finishing products".The combustion performance met the B1(B)flame retardant level in GB 8624-2012"Classification for burning behavior of building materials and products".Adding of ammonium dihydrogen phosphate as an additive effectively improves the surface frost resistance of MOCBB.关键词
蔗渣/硫氧镁水泥/硫氧镁水泥基蔗渣板/阻燃性能/泛霜/磷酸二氢铵Key words
bagasse/magnesium oxysulfide cement/magnesium oxysulfide cement-based bagasse board(MOCBB)/combustion performance/frosting/ammonium dihydrogen phosphate分类
轻工纺织引用本文复制引用
汪述平,王洪松,魏任重,马同华,陆铜华..硫氧镁水泥基蔗渣板的制备工艺及抗泛霜性探究[J].木材科学与技术,2024,38(4):51-58,8.基金项目
杭州市科技发展计划"碳汇资源高效利用及加工剩余物综合利用技术开发"(202204T12). （202204T12）
