检索结果-南通市图书馆

Comparative Analysis of Reaction to Fire and flammability of Hemp Shives Insulation Boards with Incorporated Microencapsulated Phase Change Materials

引用

Journal of Renewable Materials 2024年第3期12卷 603-613页

作者： Inga Zotova Edgars Kirilovs Laura Ziemele Institute of Architecture and Design Riga Technical UniversityRigaLV-1048Latvia Forest and Wood Products Research and Development Institute JelgavaLV-3001Latvia

Nowadays buildings contain innovative materials,materials from local resources,production surpluses and rapidly renewable natural *** Change Materials(PCM)are one such group of novel materials which reduce building energy *** the wider availability of microencapsulated PCM,there is an opportunity to develop a new type of insulating materials,combinate PCM with traditional insulation materials for latent heat energy *** materials are typically flammable and are located on the interior wall finishing yet there has been no detailed assessment of their fire *** this research work prototypes of low-density insulating boards for indoor spaces from hemp shives using carbamide resin binder and cold pressing were ***-scale cone calorimeter tests were conducted to evaluate fire risk,with a focus on assessing material flammability properties and the influence of PCM on the *** this research,the amount of smoke,heat release rate,effective heat of combustion,specific extinction coefficient,mass loss,carbon dioxide yield,specific loss factor,ignition time of hemp straws samples and samples of hemp straws with 10%and without PCM admixture were *** is a risk of flammability for PCM and their fire reaction has not been evaluated when incorporating PCM into interior wall finishing *** obtained results can be used by designers to balance the potential energy savings of using PCM with a more complete understanding and predictability of the associated fire risk when using the proposed *** also allows for appropriate risk mitigation strategies.

关键词： Encapsuled phase change material renewable resources reaction to fire flammability

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

flammability Characterization and Effects of Magnesium Oxide in Halogen-free Flame-retardant EVA Blends

引用

Chinese Journal of Polymer Science 2015年第12期33卷 1683-1690页

作者： Yan Zhang Rui-qun Peng 周光大 Zheng-ping Fang Xiao-nan Li Lab of Polymer Materials and Engineering Ningbo Institute of Technology Zhejiang University Hangzhou First PV Material Co. Ltd. MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University

The effects of magnesium oxide （MgO） on the flame retardant performance of intumescent systems based on ammonium polyphosphate （APP） and pentaerythritol （PER） in ethylene vinyl acetate copolymer （EVA） were studied. The results showed that MgO affects both the quality and quantity of residual char. There is an optimal value for the loading amount of MgO. More or less MgO loading may cause the formation of defective char layers and worsen the flame retardancy of EVA. According to the results of limiting oxygen index （LOI）, vertical flammability test （UL94 rating） and cone calorimetry （CONE）, the best flame retardancy with a strong and well intumescent char is obtained from the sample with 1 wt% of MgO, which has the highest LOI value of 27.9, UL94 rating of V-0 and the lowest peak heat release rate of 242 kW·m-2.

关键词： flammability Magnesium oxide Flame retardancy Ethylene vinyl acetate copolymer Intumescence.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

THERMAL DECOMPOSITION AND flammability OF ACRYLONITRILEBUTADIENE-STYRENE/MULTI-WALLED CARBON NANOTUBES COMPOSITES

引用

Chinese Journal of Polymer Science 2008年第3期26卷 331-339页

作者：方征平 Institute of Polymer Composites Key Laboratory of Macromolecular Synthesis and FunctionalizationZhejiang UniversityHangzhou 310027China

Thermal and flammability properties of acrylonitrile-butadiene-styrene copolymer (ABS) with the addition of multi-walled carbon nanotubes (MWNTs) were ***/MWNTs composites were prepared via melt blending with the MWNTs content varied from 0.2% to 4.0% by *** results showed that the addition of MWNTs accelerated the degradation of ABS during the whole process under air atmosphere,and both onset and maximum degradation temperature were lower than those of pure *** destabilization...

关键词： Carbon nanotubes Thermoplastic resin flammability Thermal properties

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effect of Fiber Loadings and Treatment on Dynamic Mechanical, Thermal and flammability Properties of Pineapple Leaf Fiber and Kenaf Phenolic Composites

引用

Journal of Renewable Materials 2018年第4期6卷 383-393页

作者： M.Asim M.Jawaid M.Nasir N.Saba Laboratory of Biocomposite Technology Institute of Tropical Forestry and Forest Products(INTROP)Universiti Putra Malaysia43400 SerdangSelangorMalaysia Department of Chemical Engineering College of EngineeringKing Saud UniversityRiyadhSaudi Arabia Composite Wood Forest Product DivisionForest Research Institute248006 DehradunIndia

This study deals with the analysis of dynamic mechanical,thermal and flammability properties of treated and untreated pineapple leaf fiber(PALF)and kenaf fiber(KF)phenolic *** indicated that storage modulus was decreased for all composites with increases in temperature and pattern of slopes for all composites,having almost the same values of E′at glass transition temperature(Tg).The peak of the loss modulus of pure phenolic composites was shown to be much *** the addition of kenaf/PALF,peaks were higher and shifted towards a high *** Tan delta peak height was low for pure phenolic composites and maximum for 60%PALF phenolic ***-Cole analysis was carried out to understand the phase behavior of the composite *** analysis(TGA)results indicated that pure phenolic composites have better thermal stability than PALF and kenaf phenolic *** and horizontal UL-94 tests were conducted and showed pure phenolic resin is highly fire *** overall results showed that treated KF composites enhanced the dynamic mechanical and thermal properties among all PALF/KF composites.

关键词： Pineapple leaf fiber kenaf fiber phenolic resin dynamic mechanical analysis thermogravimetric analysis flammability

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Intraspecific variation in shoot flammability in Dracophyllum rosmarinifolium is not predicted by habitat environmental conditions

引用

Forest Ecosystems 2022年第2期9卷 178-185页

作者： Xinglei Cui Adrian M.Paterson George LW.Perry Sarah V.Wyse Md Azharul Alam Congde Huang Shixing Zhou Lin Xiao Changhong Lai Fang He Dongyu Cao Kate Marshall Timothy J.Curran Department of Pest-management and Conservation Lincoln UniversityLincoln7647New Zealand National Forestry and Grassland Administration Engineering Research Centre for Southwest Forest and Grassland Fire Ecological Prevention College of ForestrySichuan Agricultural UniversityChengdu611130China School of Environment University of AucklandAuckland1142New Zealand Bio-Protection Research Centre Lincoln UniversityLincoln7647New Zealand Sichuan Province Forestry and Grassland Environmental Monitoring Centre Chengdu610036China

Background:flammability is a compound plant trait that can vary significantly across natural populations within *** intraspecific variation in flammability provides insights into the evolution of plant flam-mability and inform understanding of wildfire risk and behaviour in different ***:We measured four flammability variables,representing ignitibility(time to ignition),sustainability(total burning time),combustibility(maximum temperature during burning)and consumability(percentage of biomass consumed by fire)to assess the shoot-level flammability of Dracophyllum rosmarinifolium(***.)(Ericaceae),a polymorphic endemic species distributed throughout New *** examined the relationship between flammability components and a suite of climatic and geographic variables(elevation,latitude,mean annual temperature(MAT),mean annual rainfall(MAR)of the sample locations,etc.).Results:We measured shoot-level flammability components of 62 individuals across eight *** time,maximum temperature and burnt biomass were positively correlated with each other,while ignition score was independent of other flammability *** flammability components varied significantly across the eight *** habitat conditions we considered were not related to any of the shoot-level flammability components of ***:Intraspecific variation in flammability in *** may be a byproduct of selection on other functional traits,such as leaf size,shoot lipid content,indicating that plant flammability is an incidental result,rather than selected for,at least in ecosystems without fire as a selective force.

关键词： Dracophyllum Fire flammability Habitat

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Southeast Tibet Forest Fuel Types and flammability

引用

Chinese Forestry Science and Technology 2007年第1期6卷 77-81页

作者： SHU Lifu ZHAO Fengjun WANG Mingyu LIU Xiaodong WANG Jingsheng Forest Protection Laboratory of State Forestry Administration Institute of Forest Ecology Environment and Protection Chinese Academy of Forestry Beiiing 100091 P.R.China Beijing Forestry University Beijing 100083 P.R.China Tibet Agriculture and Animal husbandry College Linzhi 860000 P.R. China

Southeast Tibet forest is in east subtropical zone. This region natural environment is unique, influenced by the southwest monsoon, so forest fires are very easy to occur in the dry season. Forest in this region is over mature forest, and accounts for much proportion. Fire season in this area is winter and spring. But in the special year, forest fires can also occur in the hot summer. Fire season lasts from October to next February,but to April in an individual arid year. Most of the fires in this area are surface fires, crown fire, can occur after long time drought. Ground fires do not occur in the region.

关键词： forest fire forest fuel flammability

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Thermal degradation and flammability of Low Ignition Propensity Cigarette Paper

Thermal degradation and Flammability of Low Ignition Propens...

引用

作者： Shun Zhou Xiaofeng Wang Qing He Yaping Zhang Panyue Wen Zhenfeng Tian Yingbo Xu Dongliang Zhu Hua Wang Shike She Gang Chen Research and Development Centre China Tobacco Anhui Industrial Co.Ltd. State Key Laboratory of Fire Science University of Science and Technology of China

The thermal degradation and flammability of ordinary area(OA) and coating band(CB) of low ignition propensity(LIP) cigarette paper were compared using scanning electron microscopy(SEM),real-time fourier transform infrared(RT-FTIR),thermogravimetric/Fourier transform infrared spectrometry(TG-FTIR) and microscale combustion calorimeter(MCC),*** results showed that only the compactly packed particles,instead of fibres exposed on the surface of OA,could be seen on the surface of *** it is at the whole temperature range that there are still many closely packed particles on the surface of *** results of thermal degradation displayed that C-H and C-O bonds in CB displayed higher thermal stabilities than those in *** the comparison of the evolution of their gaseous products manifested that the emission of many gas products of CB like methane,hydrocarbons,aldehydes,CO and alcohols were obviously lower than those of ***,some evaporated species like alkanes,CO,carbonyl compounds and alcohols escaped earlier than those of *** flammability results demonstrated that both peak heat release rate(PHRR) and total heat release(THR) of CB above 270°C in the degradation step of cellulose and the following char decomposition were lower than those of OA.

关键词： Low ignition propensity Cigarette paper Thermal degradation flammability

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Experimental Study of Influence of Fuel Ratio on Combustion Characteristics of Diesel-Wetted Wood Powder

引用

Journal of Thermal Science 2020年第4期29卷 884-892页

作者： CHEN Changkun LEI Peng ZHANG Yulun XIAO Huang XU Tong JIAO Weibing State Key Laboratory of Disaster Prevention and Reduction for Power Grid Transmission and Distribution Equipment State Grid Hunan Electric Company Limited Disaster Prevention and Reduction CenterChangsha 410007China Institute of Disaster Prevention Science and Safety Technology Central South UniversityChangsha 410075China

In this study, experiments were conducted to examine the influence of the fuel ratio(i.e., the ratio of diesel mass to wood powder mass) on the combustion characteristics of diesel-wetted wood powder, in which 0# diesel and poplar wood powder were used and well mixed. The fuel ratios were set to 0, 0.5, 1.0, 1.5, and 2.0. Fire behaviors, temperature distributions, mass loss rates, and CO concentrations were measured and analyzed. The results showed that because of the coupled effect of evaporation and the capillary force, the ignition point of diesel-wetted wood powder(less than 3°C) dropped dramatically as compared with that of pure wood powder(higher than 280°C) and pure diesel(higher than 107°C). At the early stage of combustion, diesel is lifted upwards by the capillary force, increasing both the concentration of diesel vapor and the temperature at the surface. When the surface temperature reaches that of the pyrolysis of wood powder, considerable pyrolysis gas emerges and combusts. As the flammable gas is consumed gradually, carbon combusts prominently when plenty of oxygen diffuses to its surface. Regarding the influence of the fuel ratio, the results showed that in cases with lower fuel ratios, the combustion was not self-sustainable. When the fuel ratio was relatively high, the temperature at the flame center was lower owing to incomplete combustion. More CO could be found in cases with higher fuel ratios in the early and late stages of combustion. The results could help to improve knowledge regarding combustion of fuel-wetted wood powder.

关键词： diesel-wetted wood powder fuel ratio flammability combustion characteristics

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Development of non-flammable high strength extruded Mg-Al-Ca-Mn alloys with high Ca/Al ratio

引用

Journal of Materials Science & Technology 2018年第11期34卷 2063-2068页

作者： Guosong Han Ding Chen Gang Chen Jianghua Huang College of Materials Science and Engineering Hunan University

A series of non-flammable high strength Mg-Al-Ca-Mn alloys with high Ca/Al ratio were fabricated by water-cooled casting and hot extrusion. Microstructure and mechanical properties were investigated to study the effect of hot extrusion. The experimental results showed that hot extrusion significantly improved the mechanical properties by grain refinement and precipitates. Ignition temperature was measured by furnace test, and the highest temperature is up to approximately 1040℃ due to the composite oxide layer consisting of CaO and MgO. In addition, a laboratory-scale flame test was conducted to evaluate the flammability of smaller specimens. These alloys exhibited marvelous flame resistance attributed to the protective effect of dense and stable oxide film.

关键词： Magnesium alloys Extrusion Mechanical properties flammability

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Combustion Characteristic and Mechanism of a Mixture Working Fluid C_(3)H_(8)/CO_(2)

引用

Journal of Thermal Science 2021年第5期30卷 1768-1779页

作者： SHI Weixiu PAN Lisheng JIN Suyi DONG Yuehua LI Teng ZHAO Jing WEI Xiaolin Beijing Engineering Research Center of Sustainable Energy and Buildings Beijing University of Civil Engineering and ArchitectureBeijing100044China State Key Laboratory of High-temperature Gas Dynamics Institute of MechanicsChinese Academy of SciencesBeijing100190China School of Engineering Sciences University of Chinese Academy of SciencesBeijing100049China

In the CO_(2)transcritical power cycle,conventional cooling water can hardly condense subcritical CO_(2)because its critical temperature is as low as 30.98°*** order to avoid this condensing problem,CO_(2)-based mixtures have been proposed as working fluids for transcritical power *** can raise the critical temperature by mixing a little C_(3)H_(8)as the secondary component to CO_(2).However,the flammability of the mixture may limit its *** article investigated laminar flame speed of C_(3)H_(8)/CO_(2)which represents the mixture’s combustion characteristic by a so-called heat flux method and studied the inhibition mechanism of CO_(2)on the combustion based on the Premixed Laminar Flame-Speed Calculation reactor of *** experimental results showed that the laminar flame speed shows a peak value with changing the equivalence ratio and accelerates with raising the mole fraction of the organic ***,a slight upwards trend was observed for the corresponding equivalence ratio of the *** flammable range for the equivalence ratio extended with the mole fraction of C_(3)H_(8)*** the mole fraction of C_(3)H_(8)of 0.15,the maximum laminar flame speed was 12.8 cm/s,31.7%of that of the pure C_(3)H_(8).The flammable range was from 0.41 to 1.33,decreasing by 23.3%compared with that of C_(3)H_(8).A flammable critical mixing ratio was also found as 0.08/0.92 for C_(3)H_(8)/CO_(2)at the normal *** simulating,it was found that the most key free radical and elementary reaction which determine the inhibition of CO_(2)on the combustion are OH and H+O_(2)=O+OH,respectively.

关键词： CO_(2)-based mixture flammability laminar flame speed flammable critical mixing ratio transcritical power cycle

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：