一种脱硫石膏气流煅烧工艺在生产纸面石膏板中的应用

本文根据脱硫石膏的特点，设计了一套气流煅烧工艺系统，实现了用100％脱硫石膏生产纸面石膏板的目标。     

Fire performance of closed‐cell charring insulation materials in plasterboard‐insulation assemblies

This paper presents an experimental study on the fire performance of two types of plastic charring insulation materials when covered by a plasterboard lining. The specific insulation materials correspond to rigid closed‐cell plastic foams, a type of polyisocyanurate (foam A) and a type of phenolic foam (foam B), whose thermal decomposition and flammability were characterised in previous studies. The assemblies were instrumented with thermocouples. The plasterboard facing was subjected to constant levels of irradiation of 15, 25, and 65 kW m^?2 using the heat‐transfer rate inducing system. These experiments serve as (1) an assessment of the fire behaviour of these materials studied at the assembly scale and (2) an identification of the fire hazards that these systems pose in building construction. The manifestation of the hazards occurred via initial pyrolysis reactions and release of volatiles followed by various complex behaviours including char oxidation (smouldering), cracking, and expansion of the foam. Gas‐phase conditions may support ignition of the volatiles, sustained burning, and ultimately spread of the flame through the unexposed insulation face. The results presented herein are used to validate the insulation “critical temperature” concept used for a performance‐based methodology focused on the selection of suitable thermal barriers for flammable insulation.     

南京地区夏季复合相变混凝土砌块运用效果研究

在混凝土砌块中填入相变石膏板,构成复合相变混凝土砌块,将其运用到建筑外墙中。在实验室搭建变温热箱实验装置,通过实验与模拟验证焓法模型在计算相变传热时的可行性,并运用焓法模型计算分析由复合相变混凝土砌块砌成的建筑外墙的热工特性。研究表明,用焓法模型计算得到的模拟值与实验值的误差不超过5%。通过焓法模型计算分析得到,当室内空调定温为26℃时,相变石膏板相变温度为26℃节能效果最佳,将这种相变石膏板放置在混凝土砌块外侧孔中,相变外墙房间节能59.1%,节约电费61.4%;放置在砌块内侧孔中,相变外墙房间节能45.3%,节约电费48.2%。     

纸面石膏板岩棉板能够进入民用住宅

介绍上海市建筑科学研究院和同济大学建筑设计研究院对高层商业楼和高层住宅建筑中，以石膏板取代砖和混凝土作内隔墙材料的研究结果。本文以纸面石膏板、岩棉进入商业、民用建筑的分户、分室、卫生间、厨房间内隔墙或吊顶以及外墙内保温中的应用，作出了多种选材方案设计、造价分析和经济效益比较。证明纸面石膏板、岩棉板等新型建筑材料能进入民用建筑领域。     

相变蓄能石膏板的性能研究及应用

选用微胶囊相变材料与石膏胶凝材料直接混合的方法,通过对现有的普通纸面石膏板生产工艺进行改进,实现相变蓄能纸面石膏板的规模化生产.对生产的相变蓄能纸面石膏板物理性能和热参数测试及使用效果的模拟测试表明,该产品作为建筑内墙材料时可将室内温度波动控制在较窄的范围内,能增加居住环境的热舒适性.     

钢弦石膏板隔墙施工质量监理

钢弦石膏板隔墙则用钢弦代替木龙骨或轻钢龙骨,是一种具有广阔应用前景的新型轻质隔墙。监理工程师要对材料进行验收,审批施工方案,熟悉工艺流程,抓住八个监理检查点,使主控项目和一般项目达到质量标准。     

钢框外敷混凝土和石膏板复合墙体受压性能试验

为了提升传统冷弯薄壁型钢组合墙体的装配效率和防护性能,提出一种钢框外敷混凝土和石膏板复合墙体(简称"复合墙体"),骨架为槽型截面外边框加冷弯薄壁C型钢立柱,外墙板为带有钢筋网的现浇混凝土面层,内侧用石膏板敷面,中间填充保温隔热材料.对4片复合墙体的受压性能进行了试验研究,考察混凝土面层、洞口尺寸和位置对墙体承载力的影响...     

Experimental studies of gypsum plasterboards and composite panels under fire conditions

Gypsum plasterboards are commonly used to protect the light gauge steel‐framed walls in buildings from fires. Single or multiple plasterboards can be used for this purpose, whereas recent research has proposed a composite panel with a layer of external insulation between two plasterboards. However, a good understanding of the thermal behaviour of these plasterboard panels under fire conditions is not known. Therefore, 15 small‐scale fire tests were conducted on plasterboard panels made of 13 and 16 mm plasterboards and four different types of insulations with varying thickness and density subject to standard fire conditions in AS 1530.4. Fire performance of single and multiple layers of gypsum plasterboards was assessed including the effects of interfaces between adjacent plasterboards. Effects of using external insulations such as glass fibre, rockwool and cellulose fibre were also determined. The thermal performance of composite panels developed from different insulating materials of varying densities and thicknesses was examined and compared. This paper presents the details of the fire tests conducted in this study and their valuable time–temperature data for the tested plasterboard panels. These data can be used for the purpose of developing and validating accurate thermal numerical models of these panels. Copyright © 2012 John Wiley & Sons, Ltd.     

S带建筑用石膏吸波板的宽化设计与制备

通过对单层石膏板加电阻层、双层石膏板加电阻层的S带(2～5 GHz)电磁波吸收性能的理论计算,发现通过复合可以实现吸收带宽的大幅宽化,在S带中高于-15 dB的吸收范围几乎升至100%.λ/4吸波体试验结果与理论值吻合较好,双层吸波体略差,证实宽化设计完全可行.此成果为S带新产品研制以及实现产业应用奠定了理论和试验基础.     

相变储能石膏板导热系数2种测试方法的研究

相变储能石膏板导热系数的测试多采用单一的非稳态测试方法,为更好表征相变储能石膏板导热系数的变化规律,分别采用稳态测试方法（防护热板法）和非稳态测试方法研究了相同配合比相变储能石膏板的导热系数.分析比较发现：随着相变材料掺量的增大,石膏基相变储能构件的导热系数降低;2种测试方法均能反映相变储能石膏板导热系数的变化规律,初始温度在相变温度区间时,试件的导热系数值最大;非稳态测试得到的导热系数值较大.