新型绿色建筑结构绝缘板力学性能的理论研究

通过理论分析,提出考虑面板刚度下的夹芯板挠度计算公式;并通过ABAQUS对其力学性能进行有限元模拟,将理论公式与试验结果和有限元结果进行对比验证.基于工程实际,对理论公式加以改进,得到可以应用于实际工程的夹芯板挠度计算公式.     

单通道刨花干燥系统在刨花板生产中的应用

介绍国产单通道刨花干燥系统的工作原理、结构及在刨花板生产中的应用。     

刨花形态对高密度刨花板性能影响的研究

研究了在相同工艺条件下刨花形态对微米级薄刨花高密度刨花板性能的影响。试验得出,刨花越长越薄其刨花板的静曲强度、弹性模量越大,但是内结合强度越低;刨花形态较为均匀的混合型微米级薄刨花制成的刨花板具有较好的力学性能;利用微米级薄刨花制成的刨花板比利用普通针状刨花制成的刨花板在力学性能上更有优势。     

Upgrading of MUF adhesives for particleboard production using oligomers of hyperbranched poly(amine-ester)

Oligomeric precursors of poly(amine-ester) were synthesized by a two-step condensation reaction of succinic anhydride with diethanolamine under mild conditions. The oligomers formed were characterized at each synthesis step using matrix-assisted laser desorption/ionization time of flight (MALDI-TOF) mass spectrometry. This showed that after step (1), the condensation adduct of both reactants (206?Da) was the main product mixed to high proportion of unreacted diethanolamine (106?Da). After step (2), the adduct at 206?Da decreased substantially, while other compounds at 275, 292, and 375?Da started to increase along with the appearance of a new compound at 392?Da. This indicates that the reaction proceeds slowly under these conditions to give higher branched oligomers (HP). In addition, some cyclic compounds were also identified by the 188, 275, and 375?Da peaks. MALDI-TOF of the melamine–urea–formaldehyde (MUF) resin before and after reaction with the hyperbranched oligomers mix showed clear indication of the coreaction of simple melamine–formaldehyde oligomers with several of the hyperbranched oligomers previously identified. Addition of small proportions of a mixture of the formed HP oligomers to a MUF adhesive improved the internal bond (IB) strength, both dry and wet, of wood particleboards bonded with it. The results obtained indicate that the addition of these HP oligomers can improve the dry IB strength by 17–24% according to conditions of preparation and the wet IB strength by as much as 47% when compared to the control sample.     

粉煤灰水泥刨花板热养护工艺改进的研究

目前粉煤灰水泥刨花板的热养护时间比较长（12h）,热能耗较大,因此生产成本增加.通过对粉煤灰水泥刨花板热养护的方式改进,蒸汽的热传导加快,热养护时间可以从12h缩至8h.     

麦秸刨花板用PMDI胶粘剂固化条件的研究

以麦秸为原料、PMDI为胶粘剂,利用K型热电偶、自动平衡记录仪跟踪检测板材热 压过程中板材中心温度随热压时间的变化情况,初步对PMDI胶粘剂的固化适宜条件加以研 究,以指导生产实践,提高生产效率。     

镁系无机刨花板热压工艺与阻燃性能研究

摘 要：为研究镁系无机刨花板在生产过程中实验参数对板材性能的影响与各种参数对板材阻燃性能的影响,采用单因素实验法研究不同密度对板材物理力学性能及燃烧性能的影响,设置正交试验研究水性胶浓度、增强剂用量、无机胶施胶量、板坯含水率四因素对板材性能的影响,并设置仅采用MDI胶制成的板材作为对照组,分析对比不同无机刨花板的热总释放量、热释放速率、烟总释放量、产烟速率等性能,得到结论为：当板材密度为0.95 g/cm3、水性胶浓度为7.5%、增强剂用量为2.5%、无机胶施胶量为50%、铺装含水率为23%时,板材各项性能最优,满足《难燃刨花板》中难燃P2型刨花板的要求。     

刨花板静曲强度不确定度评定

对刨花板静曲强度进行测量,对引起不确定性的主要来源进行逐项分析和评定,最后得出破坏载荷测量引起的不确定度是刨花板静曲强度不确定度评价的关键。     

红松枝桠材制造刨花板优化工艺的研究

红松枝桠材占树干的24.74 %,其中3cm以上的枝桠材占13.27 %。科学地利用红松枝桠材制造优质刨花板将会为枝桠材寻找有效的利用途径。本研究以红松枝桠材为研究对象 ,在测定材质的基础上 ,对制板工艺进行了深入地研究 ,提出了制板的优化工艺参数和技术     

在异氰酸酯麦秸刨花板制造中粘板问题的研究

研究了在使用异氰酸酯胶粘剂生产麦秸刨花板中粘板问题的防治 ,并得到了良好的、廉价的、可工业使用的脱模剂。