国产一级特黄aa大片在线-国产一级特黄aa大片免费-国产一级视频在线观看-国产一级视频久久-午夜影院免费体验-午夜影院免费入口

Language:CHINESESENGLISH

Home > News > On the fireproof paint fireproof principles and techniques
CONTACT US
  • Address:Pingtang Industrial District, Shipeng Village, Shishan Town, Nanhai District, Foshan City,
  • Phone:0757-81002668/0757-63323396
  • Fax:0757-81196682
  • Contact:Ben Zheng/13826981293 Kerry Lu/13751224830
  • E-mail:sbs@sbsprefabhouse.com
  • URL:http://m.lhp8.cn

On the fireproof paint fireproof principles and techniques

Time:[2015-3-14]  Hits:5211

On the fireproof paint fireproof principles and techniques

    Abstract steel as the main form of modern architecture, light weight, high strength, good seismic performance, short construction period, the high degree of industrialization building, the advantages of large space utilization at room temperature, for enterprises to save investment by investors a large number of applications. But poor performance steel building fire resistance characteristics are very obvious, because though it is a non-burning steel material, but it is a good conductor of heat, easily conduct heat. Steels at temperatures over 300 degrees after the yield point and ultimate strength decreased significantly, reaching 600 degrees almost zero intensity. Scientific experiments and examples show that unprotected steel in case of fire, just 15 minutes, its temperature will rise to over 540 degrees, resulting in distortion component itself, leading to the destruction of the buildings collapsed, deformed steel can not be repaired using. Therefore, the steel must take fire protection measures.

    Key words fireproof coatings fire principle

    I. Introduction

    Steel structure fire method mainly paint protection, fire protection board, concrete protection, flexible membrane protection, inorganic fiber protection, within the structure of water cooling protection. Among them, brushing fire retardant coating construction convenient, light weight, low cost, component geometry without limitation, the widest range of applications, maximum efficiency.

    For Steel Materials overcome deficiencies in the practical application of fire prevention, fire protection must be treated, and its purpose is to improve the fire resistance of steel to design specification limits. Steel prevent rapid warming in the fire deformed slump, its measures are varied, the key is to take different approaches under different circumstances, such as the use of insulation, refractory steel barrier direct flame burning, reduce the speed of heat transfer delayed steel temperature, strength becomes weak time. But no matter what method adopted, the principle is the same. Fire-resistant coating is a kind of fire in recent years, more advanced technical measures.

    Second, fireproof coatings fire principle and composition

    Fireproof protection principle is the use of thermal insulation or endothermic material direct flame burning steel barrier, reduce the speed of transfer of heat to the steel, steel postpone temperature rise and weakening of the time. According to "fireproof coatings" (GB14907-2002), defined as fireproof coatings applied to buildings and to build the steel surface, can form a protective layer of fire-resistant insulation to improve the fire resistance of steel coatings. Currently, domestic and fireproof coatings are mainly matrix resin, catalyst, into carbon, foaming agents and other components.

    A matrix resin

    Matrix resin compatibility with other components, both to ensure the paint under normal use conditions with a variety of features, but also has a flame resistance and excellent performance under expansion foam flame burning or high temperatures. Typically, the higher the quality of the acrylic resin carbonized layer fire retardant coating, it is usually an acrylic resin as the main film-forming material, and its modification in order to improve the overall effectiveness of the coating.

    2 catalyst

    A catalyst is a substance that breaks down the phosphate under certain conditions, the decomposition of the acid polyol dehydration, so make it a non-flammable carbonized layer of three-dimensional structures. Generally, the more water-soluble phosphate, melamine phosphate Hangout amine, and both catalytic and foam double effect, the main choice of melamine phosphate catalyst.

    30% carbon agent

    Into carbon agent is non-flammable material basis of three-dimensional structure of the foam carbide layer coating is formed at high temperatures, carbonized layer of foam from the skeleton. Into carbon agent on the decomposition temperature and the catalyst to be matched when using polyphosphate amine as a catalyst on the application of high thermal stability containing carbon-carbon polyol made agents, such as pentaerythritol, dipentylamine season alcohol thin fireproof coatings Guangdong Daya Bay Nuclear Power Plant for the bare frame houses reached than 10 years ago, can be used. But its drawback is the construction of smell great, coating easy to aging, such as starch. Starch made carbon agent, water resistance coating easy to solve the problem, but because of its price dipentaerythritol reason, rarely used in the country, currently widely used as a fire retardant coating pentaerythritol into carbon agent.

    4 foaming agent

    Intumescent fire retardant coating only in the role of a foaming agent to produce expansion layer at a high temperature flame. In case of fire, the blowing agent decompose and release ammonia, water, carbon dioxide, hydrogen halide nonflammable gas, the coating reaches the foaming expansion in the case of the softening point, forming a sponge-like structure.

    Third, the technical problems

    1 Durability

    Due to the presence of thick fireproof paint since the major decorative poor, it can only be used in some less demanding outdoor steel appearance. Widely used is thin and ultra-thin fireproof coatings, especially ultra-thin. The major types of materials used in coating ammonium polyphosphate, melamine and pentaerythritol have poor water resistance, exist as environment, time and so on dissolution, decomposition, degradation and aging problems, therefore, such coatings will certainly over time Fire performance has declined, but has not yet find a way to assess the durability of fire retardant coating. The fire resistance test report is given after the paint coating maintenance inspection results 1-2 months, but the fire is unpredictable, the fire may be in a year after the paint coating may also painted 10 years after happen, so intumescent fire retardant coating durability is the most important issue.

    2 Security

    Currently intumescent fireproof paint a fire is likely to release ammonia, HCN, hydrogen halides, nitric oxide, nitrogen dioxide, carbon monoxide, carbon dioxide, chlorine, bromine and other toxic gases. If the concentration of these gases over the body to endure the limit, it will not escape the fire on the officers and firefighters harm.

    3 production, construction

    The size of the majority of domestic manufacturers fireproof coatings little production process automation level is not high, there are some companies still in the hands of the workshop type in operation, many products of similar formulation process, dedicated to the fire-resistant coating materials research is not enough, detection of raw materials, control is not enough, the production process of incomplete testing methods, improve construction equipment could be improved, and the rust of not supporting a rigorous test.

    4 Test Methods

    Fireproof coatings, as a class of functional coatings, which are mainly composed of physical and chemical properties and fire in two ways. Also different because of the fire resistance of fire-resistant coating applications, different types by the fire, the protective effect of the substrate is different.

    5 detection standards

    GB14907-2002 "fireproof paint" the same kind of fire retardant coating inspection report only provides a coating thickness, and the fire resistance of the actual project due to steel beams, steel columns, steel floor specification requirements vary, such as indoor The thickness of 2mm ultra-thin fireproof coatings for fire resistance of the test report issued by 1.5h, practical engineering requirements steel beams, steel, fire resistance of steel columns were 1.5h, 1.0h, 2.0h. For steel, steel columns of fire retardant coating thickness which should be protected, regardless of the current lack of relevant research from theory or practical works.

    6 difference detection standard components and the actual engineering components

    Fire endurance test substrate used is a standard I36b or I40b Q235 hot rolled ordinary beam beam, but the actual engineering application, the cross-sectional dimensions of a wide variety of steel components. No complete correspondence between the steel beam and the actual engineering inspection report described the steel components, steel components and standard steel beam between the actual use should be how to convert, how to determine the thickness of the coating of steel components actually used, the state is still No provisions.

    Fourth, the corresponding countermeasures

    1 pair of steel buildings for scientific fire protection

    Currently, the way we usually used are: steel surface spraying fire retardant coating; situ concrete used for cladding; water-filled inner steel components, of which the most widely used is the steel surface spraying fire retardant coating.

    2 increase publicity and training and education efforts

    Fire causes of fire hazards caused by the project are many, but a very important reason is that thinking and understanding in place, contempt fire prevention, there are chances of illegal construction. Fire departments should use newspapers, radio and other forms of widely publicized the importance and necessity of steel fire-retardant treated timely organizational design, construction units fire training, to improve the design, operational and theoretical level of construction workers and law enforcement awareness.

    3 fireproof coatings market to strengthen and standardize management

    Fireproof paint manufacturers who must have national institutions detection tested and reports are allowed to sell the factory, and should be accompanied by manual, marked with technical performance, manufacturing lot number, shelf-life, the scope; fire supervision departments should carry out batch fire retardant paint factory quality sampling and testing their packaging, labels, notes, and meets the requirements. For the construction unit fire retardant coating, clear requirements to hold the relevant construction qualification.

    4 strict and approval

    When accepting the audit steel project, designed specifically to use nature of the building units in the drawing, fire rating, fire hazard classification, production process, fire retardant coating construction methods and other fire design content. Undertake fire engineering construction unit should have appropriate qualifications and pre-construction program will be reported to the fire department and construction. For the design was incomplete, no construction scheme, the fire department can not accept notices issued and indicate the reasons for inadmissibility.

    5 correct selection of fireproof coating species

    Currently on the market a wide variety of fire retardant coatings, fire performance is different. Can not exist aspect composition, manufacturing processes, quality control methods and standards, and application technologies distinct decorative fireproof coatings used to protect steel; fireproof coatings should be used for different fire-resistant coating according to the requirements of the fire resistance of steel: When the fire resistance of not more than 1h, the choice of ultra-thin or thin fireproof coatings; when the fire resistance of not more than 2.5h, the choice of thin or thick paste fire retardant coating; refractory limit when 2.5h above should be used in Mastic fire retardant coating. Exposed parts and decorative high performance requirements, such as a roof load-bearing elements can be used ultra-thin fireproof paint, exposed columns and truss members can choose thin coating, the choice of the hidden parts of the paint thick paste. You can not only meet the technical performance indoor fireproof coatings requirements of the standard product plus technical improvements will not be used to protect steel outdoor, open-air fireproof coatings selection should consider its water, frost, corrosion and other factors, the only way to really play fire performance coatings.

    6 timely construction site inspection

    Fire retardant coating construction faster, strengthen supervision and inspection of the construction site is very important. Through the construction site inspection, construction team can grasp the situation, progress of the project, construction quality and product quality. Only on-site inspections, in order to discover hidden and timely supervision and rectification, to avoid unnecessary losses. Where conditions permit, you can also sample from the construction site and sample thermal performance analysis, comparison, inspection, to ensure project quality.

    7 stringent acceptance criteria

    Before project completion and acceptance, the fire department should make the building, construction and supervision units issued by quality inspection reports, master of the construction project. When the project is completed, not only to pay attention to the acceptance of fire-fighting facilities, but also the fireproof coatings of acceptance in an important position. Fire supervisors not only to watch, hand touch, thickness, etc. should also configure the necessary testing equipment. Meet the requirements for the quality of construction, which is to rework rework punishment the punishment to ensure the quality of the steel structure fire engineering, steel works to eliminate fire hazards exist fundamentally.

    V. Conclusion

    Because fireproof coatings are now and in the future of a society promising products, only inspection agency, production, design, construction, supervision and fire supervision departments jointly to work together to make our fire retardant coating areas healthy and orderly development .

    References:

    [1] Xu xiao nan, Zhou Zheng Mao. Fireproof paint [M]. Chemical Industry Press, 2004.

    [2] Wang Jin, Wang Xianming, Zhao Rui. Problems and Solutions exist fireproof coatings [J]. China paints, 2005, (8): 11-12.

    [3] fireproof coatings application specifications. Sichuan Fire Research Institute of Ministry of Public Security.

    [4] building fireproof technical specifications. China Planning Press, 2006.

    [5] Nijian Chun Liang sea. Application and construction elements fireproof coatings [J]. Coatings Technology & Abstracts, 2004, (2): 17-19.

Copyright:佛山市勝邦鋼結構有限公司 Foshan Shengbang Steel Structure Co., Ltd. Record Number:粵ICP備13078463號
主站蜘蛛池模板: 正拓夏令营官网-中小学生军事夏令营-研学军旅训练拓展夏令营 | 卫生间隔断-东莞卫生间隔断-东莞卫生间隔断厂家-公共卫生间隔断-东莞市康丰家居建材有限公司 | 社会百态,七仙女思春完整版免费高清电影引发的思考 | 种植槽系统,移动苗床,多层种植货架,潮汐苗床,物流苗床,潮汐面板,立体旋转育秧床,河北博超温室设备有限公司 | 重庆监控安装_监控系统工程_高清监控摄像头-重庆监控系统安装公司 | 呼吸家官网|肺功能检测仪生产厂家|国产肺功能仪知名品牌|肺功能检测仪|肺功能测试仪|婴幼儿肺功能仪|弥散残气肺功能仪|肺功能测试系统|广州红象医疗科技有限公司|便携式肺功能仪|大肺功能仪|呼吸康复一体机|儿童肺功能仪|肺活量计|医用简易肺功能仪|呼吸康复系统|肺功能仪|弥散肺功能仪(大肺)|便携式肺功能检测仪|肺康复|呼吸肌力测定肺功能仪|肺功能测定仪|呼吸神经肌肉刺激仪|便携式肺功能 | 威学一百-专注国际学校择校备考-DSE-A-level-雅思-托福-OSSD-港澳台联考-AP-IGCSE-IB-AMC-多邻国-PTE-SAT-SSAT-小语种(如日语,韩语,德语,法语,西班牙语,意大利语,俄语,泰语)等考试培训,为出国留学学生提供个性化定制性学习方案,线下实体面授+线上网络课程, 提供一对一,小班课等多种班型 | 天津佳创博为科技有限公司|AGV控制器|无人搬运车|磁导航传感器|AGV专业零配件 | 七评-爱美儿信息科技有限公司〖官网〗? | 康复支具-医用颈托-辅助固定矫形器-骨折固定带生产厂家-安平县康信医疗器械有限公司 | 西安西雷脉冲功率技术有限公司-高压调制器/加速器与脉冲功率系统的研发/生产/应用推广/高压脉冲电源的应用研究/设计/生产和销售/高功率脉冲器件/材料与仪器设备的研发/生产和销售/高电压/大电流/强磁场环境的模拟及测试服务/会议会展服务/货物及进出口的业务/脉冲功率技术领域类的技术转让 | 希希助培是专业的教育信息化全场景服务商,为教育培训机构提供教务管理、招生营销、财务管理、家校互动等 | 全棉帆布厂家_加工帆布_涤棉帆布价格_染色帆布定制_广州美丽华皮革帆布-广州美丽华皮革帆布 | 育婴师_催乳师证_月嫂证怎么考_育婴师证报考需要什么条件-家政培训网 | 郑州冷却塔_河南冷却塔-河南金创制冷设备有限公司 | 家具板|橱柜衣柜家具板|木饰面定制|榉木胶合板|防水胶合板|胶合板厂家-佛山吉盛唐朝木业-大坂木业 | 宁波华路德|交通信号灯|交通信号机|太阳能信号灯|交通警示灯|交通信号灯厂家 | 在线播放国产精品|哔咔漫画破解版永久vip兑换码|免费黄漫画|女被黄漫扒衣服软件|91精品麻豆 | 无锡大型数控龙门铣,喷涂加工,回火抛丸加工,精密不锈钢焊接机床身机床底座制造加工-无锡美高帝机械有限公司 | 三轴伺服机械手_五轴伺服机械手_注塑机械手_东莞市浩能自动化机械有限公司 | 推荐|广佛一条龙高端茶到底有多香| 雷达液位计_耐磨热电偶_蒸汽_柴油,汽油_天然气流量计_巴歇尔槽_一体化温度变送器-江苏翔腾仪表有限公司 | 耐磨工业软管,PTFE耐腐蚀软管,耐磨喷砂胶管,超耐磨软管厂家,漯河利通液压管利通科技-耐磨工业软管,PTFE耐腐蚀软管,耐磨喷砂胶管,超耐磨软管厂家,漯河利通液压管利通科技 | 鸿茗商务-杭州鸿茗商务咨询有限公司 | 山东向阳电子科技有限公司-多用户集中式电能表生产厂家,NB物联网水表,刷卡水电表生产厂家,泰安智能水电表价格 | 煤泥烘干机,酒糟烘干机,药渣烘干机,酵母烘干机,烘干机厂家-瑞奥新能源 | 消防工程公司,消防工程承接公司-亿杰(北京)工程安装有限公司 | 喵走共享单车网 - 共享电动车_共享电单车骑行门户网站 倡导绿色出行 | 阻抗分析仪 阻抗测试仪 介电常数测试仪 充电枪测试仪-苏州腾斯凯电子科技有限公司 | 联想南京总代理-联想服务器|联想电脑笔记本代理商|联想工作站|dell服务器|HP服务器|南京IBM代理商|IBM V5000存储总包销-南京宇宽科技有限公司 | 宁波润金智能科技有限公司| 小程序定制,小程序开发,北京小程序公司,网站建设,网站制作,北京网站建设,北京网站制作 | 威学一百-专注国际学校择校备考-DSE-A-level-雅思-托福-OSSD-港澳台联考-AP-IGCSE-IB-AMC-多邻国-PTE-SAT-SSAT-小语种(如日语,韩语,德语,法语,西班牙语,意大利语,俄语,泰语)等考试培训,为出国留学学生提供个性化定制性学习方案,线下实体面授+线上网络课程, 提供一对一,小班课等多种班型 | 无锡今飞激光技术有限公司-手持激光焊接机_激光打标机_激光清洗机_平台激光焊接机_焊接专机- | 中科盛世酒窖 - 酒窖设计_酒窖工程_酒窖空调设备_恒温酒柜定制_私人别墅家庭酒窖_不锈钢红酒柜_实木雪茄柜 | 河北省农林科学院石家庄果树研究所| 企业微信注册_CRM客户管理系统_SCRM解决方案_私域流量运营_腾讯企点服务_企业QQ-腾辉网络 | 日本国际高中_上海日本国际高中学校排名_日本国际高中留学课程_上海日语国际高中学校学费-上海工程技术大学国际多语种特色高中课程【官网】 | 监控工程,安防监控公司,北京监控安装,北京安装监控,安装摄像头,北京监控维保,监控施工,北京监控维修,监控弱电工程,监控器安装,监控维护保养,监控工程设计,北京监控设备维修,监控报警安装,北京北方合力科技有限公司 | 小程序定制,小程序开发,北京小程序公司,网站建设,网站制作,北京网站建设,北京网站制作 | 南通惠德彩钢有限公司-彩钢瓦,岩棉板,净化板,夹芯板,市政工地围挡板 |