太阳能车电宝氟碳背板的秘密
admin 2018-02-08
太阳能车电宝氟碳背板的秘密
Secret of solar car electric treasure fluorocarbon backboard
太阳能车电宝太阳能电池背板有内层(EVA面)和外层(空气面)之分。外层由于直接与外界环境接触而广泛受到重视,所以背板产家往往会选用耐候性比较优异的材料诸如含氟薄膜或含氟涂料作为背板的外层,比较典型的是用杜邦的Tedlar膜或四氟树脂配制的氟碳涂料,以阻隔外界环境对基材和电池片的侵蚀。而背板内层由于不直接与外界接触,其重要性往往容易受到忽视。然而,实际的情况是,内层所受到的来自外界的破坏是不容忽视的。有统计数据表明,一年之中照射到组件表面的紫外光辐照量约为91.7kWh/m2, 其中大约10%的紫外线能够透过前板玻璃和封装材料EVA而到达背板的内层,这样一来背板内层25年中所要承受的紫外辐射量大约为91.7x10%x25=229.25 kWh/m2, 这远远超过了3倍IEC标准要求的45 kWh/m2的辐射量,可见背板内层的性能尤其是耐紫外性能,绝对不能被忽视,否则会给终端电站的使用寿命带来极大的风险!光伏组件的设计寿命为25年,这种设计寿命严重依赖于组件各个部件的长期可靠性。任何一个部件的性能下降或散失都会导致”短板效应”,使25年的设计寿命大打折扣,给投资者带来巨大的经济损失,也严重损坏了光伏作为清洁能源的声誉。鉴于氟材料特殊的组成和卓越的耐化学性、热稳定性、优良的介电性、不燃性和不粘性等优点,毫无疑问,如果将有机氟材料也导入背板的内层将极大地提高背板的整体可靠性。但是,用什么样的有机氟材料以及如何导入背板内层中将会直接影响氟材料在背板中的存在形式和分布状况,并将进一步影响氟材料功能的发挥和背板的整体性能,最终将决定终端电站的使用寿命。2015年至今,越来越多的组件厂和电站投资商把双面含氟背板作为优先选择,于是许多背板供应商纷纷宣称自己的背板是双面含氟,因此,如何判断和识别背板的含氟内层,是组件商需要十分谨慎的加以对待的问题。不幸的是,目前市面上含氟背板的种类繁多,质量也参差不齐,给组件商的选择带来比较大的困惑,因此有必要就这一问题进行系统的阐述。从而回答“什么样的背板内层才是真正的、经得起考验的含氟内层”这一根本问题。
Solar car solar battery backboard has the inner layer (EVA surface) and the outer layer (air surface). Due to the direct contact with the external environment of outer and extensive attention, so often will choose back producing excellent weather resistance materials such as fluoride film or coating containing fluorine as the back of the outer layer, typically prepared by DuPont Tedlar membrane or PTFE resin fluorocarbon coating, to prevent the external environment of the substrate and the battery sheet erosion. The importance of the back plate is often ignored because it does not contact with the outside world directly. However, the actual situation is that the internal damage from the outside world is not to be ignored. Statistics show that one year exposure to ultraviolet irradiation amount of component surface is about 91.7kWh/m2, about 10% of the ultraviolet rays can reach back through the inner front panel glass and EVA packaging materials, amount of ultraviolet radiation in this way back in 25 years to have a layer of about 91.7x10%x25=229.25 kWh/m2, which is far more than the the amount of radiation 3 times IEC standard 45 kWh/m2 performance, especially the inner back visible ultraviolet resistance, absolutely can not be ignored, otherwise it will bring great risks to the service life of the terminal station! The design life of the photovoltaic module is 25 years, and this design life depends heavily on the long-term reliability of the components of the component. The degradation or dissipation of any component will lead to the short board effect, which will make the design life of 25 years greatly reduced, bring huge economic losses to investors, and also seriously damage the reputation of PV as clean energy. In view of the special composition and excellent chemical resistance, thermal stability, excellent dielectric properties, nonflammability and non sticky advantages of fluorine materials, there is no doubt that if the organic fluorine material is also introduced into the inner layer of the backplane, the overall reliability of the backplane will be greatly improved. However, with organic fluorine material what and how to import the inner back will have a direct impact on the existing form and distribution of fluorine in the back material, and will further affect the overall performance of fluorine material function and the back plate, will ultimately determine the service life of the terminal station. Since 2015, investors and more and more power plant components to double fluorine backplane as the preferred option, so many suppliers have claimed the backplane backplane is double fluoride, therefore, how to judge and identify the backboard fluorine lining, is a component of business requires very cautious to treat the problem. Unfortunately, at present, there are various kinds of fluorinated backboards on the market, and the quality is also uneven, which brings greater confusion to the choice of component manufacturers. Therefore, it is necessary to systematically elaborate on this problem. To answer the fundamental question of "what kind of backplane inner layer is the real, tested fluorine containing inner layer".
太阳能车电宝反应性氟材料和非反应性氟材料
Reactive fluorine material and non reactive fluorine material for solar vehicle
与背板的外层材料相似,用于背板内层的氟材料从大类来分可以分为反应性氟材料和非反应性氟材料。前者是指大分子侧链中含有可反应的活性基团,例如羟基 (-OH) (图1),因此可以通过化学反应的方式将氟材料导入背板内层并固定在基材表面。反应性氟材料在涂覆型背板中用得比较多,尤其是在等离子体增强的涂层技术中,通过固化剂将反应性氟材料牢牢地固定在背板的内层。
Similar to the outer material of the back plate, the fluorine materials used in the inner layer of the back plate can be divided into reactive fluorine materials and non reactive fluorine materials. The former refers to the active side groups in macromolecule side chains, such as hydroxyl group (-OH) (Figure 1). Therefore, fluorine can be imported into the inner layer of the backing plate and fixed on the substrate surface by chemical reaction. Reactive fluorine materials are widely used in coated backboards. Especially in plasma enhanced coating technology, reactive fluorine materials are firmly secured to the inner layer of the backplane through curing agents.
非反应性氟材料是指整个大分子中不含有任何可反应的活性基团,例如常见的PTFE, PVDF和PVF都是非反应性氟材料(图2)。由于分子链中没有活性基团,所以非反应性氟材料只能以填料的形式加入到涂料中或与其它成膜性好的材料一起共混成膜,然后通过涂覆技术或胶粘复合技术将非反应性氟材料导入到背板的内层。这种加入氟材料的形式会对涂料或膜材料的性能产生重大影响,并最终决定了背板内层的可靠性。
Non reactive fluoropolymer is that the whole macromolecule does not contain any reactive active groups. For example, the common PTFE, PVDF and PVF are all non reactive fluorine materials (Figure 2). Because there is no active groups in the molecular chain, so non reactive fluorine material can only be added into the coating or film and other materials together to form hybrid membrane packing, and then through the inner coating or adhesive composite technology of non reactive fluorine material into the backplane. The form of this material will have a significant impact on the performance of the coating or film material, and ultimately determines the reliability of the inner layer of the back plate.
 本文由:车电宝 太阳能车电宝 http://www.pdqfon.com/彭都新能源科技有限公司提供,如需转载请带上链接。
This paper consists of: electric car electric car Bao Bao http://www.pdqfon.com/ Peng Douxin solar energy science and technology limited company to provide, for reprint please bring the link. 

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