Fluoroelastomers endowed with high resistance to polar solvents and to
bases
    44.
    发明授权
    Fluoroelastomers endowed with high resistance to polar solvents and to bases 失效
    氟弹性体赋予极性溶剂和碱的高抗性

    公开(公告)号:US5639838A

    公开(公告)日:1997-06-17

    申请号:US538180

    申请日:1995-08-23

    CPC分类号: C08F214/262

    摘要: Fluoroelastomers comprising, by mole:(a) from 33 to 75% of tetrafluoroethylene (TFE);(b) from 15 to 45% of a perfluorovinylether (PVE);(c) from 10 to 22% of vinylidene fluoride (VDF).They are endowed with high resistance to polar solvents and to bases, excellent compression set also at high temperatures, low Tg and good processability.They result particularly suitable for the manufacture of sealing elements (O-rings) for plants intended to the production of methylterbutylether (MTBE).

    摘要翻译: 含有摩尔的氟弹性体:(a)33-75%的四氟乙烯(TFE); (b)15至45%的全氟乙烯基醚(PVE); (c)10至22%的偏二氟乙烯(VDF)。 它们具有对极性溶剂和碱的高耐性,在高温下也具有优异的压缩永久变形,低Tg和良好的加工性。 它们特别适用于制造用于生产甲基丁基醚(MTBE)的植物的密封元件(O型圈)。

    Composite ionomeric membrane
    45.
    发明授权
    Composite ionomeric membrane 有权
    复合离聚物膜

    公开(公告)号:US09162190B2

    公开(公告)日:2015-10-20

    申请号:US13364974

    申请日:2012-02-02

    摘要: A composite ionomeric membrane comprising a layer or film of a porous inert material on which a (per) fluorinated sulphonic ionomer is deposited wherein the sulphonic groups are at the end of short side chains (SSC), said ionomer having: equivalent weight comprised between 280 and 1,700 g/eq; side chains of formula: —O—CF2—CF2—S03−M+, wherein M is hydrogen or an alkaline metal; said membrane having in each of the two orthogonal directions xy of the plane, after dipping in demineralized water at 100° C. for 30 minutes and preliminary drying at 105° C. under vacuum for one hour, the following size variations: in one direction, size variation lower than 25%; in the other direction, size variation lower than 20%.

    摘要翻译: 一种复合离聚物膜,其包含多孔惰性材料的层或膜,在其上沉积(全)氟化磺酸离聚物,其中所述磺基位于短侧链(SSC)的末端,所述离聚物具有:当量重量在280 和1,700g / eq; 式-OC2-CF2-SO3-M +的侧链,其中M为氢或碱金属; 所述膜在平面的两个正交方向xy中的每一个中,在100℃的软化水中浸渍30分钟,并在105℃下在真空下预干燥1小时,以下尺寸变化:在一个方向上 ,尺寸变化低于25%; 在另一个方向,尺寸变化低于20%。

    Solar cell module
    46.
    发明授权
    Solar cell module 有权
    太阳能电池组件

    公开(公告)号:US08461448B2

    公开(公告)日:2013-06-11

    申请号:US12594525

    申请日:2008-04-04

    IPC分类号: H01L31/042

    摘要: The present invention pertains to a solar cell module comprising at least one photovoltaic element encapsulated between a front layer on its light receiving surface side and a back layer, said front layer comprising at least one layer comprising a tetrafluoroethylene (TFE) polymer [polymer (F)], said polymer (F) comprising: recurring units derived from TFE; and from 15 to 25% wt of recurring units derived from at least one perfluoromonomer [monomer (CM)] chosen among: (i) perfluoroalkylvinylethers complying with formula CF2═CFORf1, in which Rf1 is a C1-C6 perfluoroalkyl, e.g. —CF3, —C2F5, —C3F7; and/or (ii) perfluoro-oxyalkylvinylethers complying with formula CF2═CFOX0, in which X0 is a C1-C12 perfluorooxyalkyl having one or more ether groups, like perfluoro-2-propoxy-propyl; and (iii) mixtures thereof. Still objects of the invention are a process for the manufacture of the solar cell module as above defined and its use for producing current to external sources, e.g. for powering a fixed-wing aircraft.

    摘要翻译: 本发明涉及太阳能电池模块,其包括封装在其光接收表面侧的前层和背层之间的至少一个光伏元件,所述前层包括至少一层包含四氟乙烯(TFE)聚合物[聚合物(F )],所述聚合物(F)包含:衍生自TFE的重复单元; 和15至25重量%的衍生自至少一种全氟单体[单体(CM)]的重复单元,其选自:(i)符合式CF2 = CFORf1的全氟烷基乙烯基醚,其中Rf1为C1-C6全氟烷基,例如 -CF 3,-C 2 F 5,-C 3 F 7; 和/或(ii)符合式CF 2 = CFOX 0的全氟烷氧基乙烯基醚,其中X 0是具有一个或多个醚基的C 1 -C 12全氟氧烷基,如全氟-2-丙氧基丙基; 和(iii)它们的混合物。 本发明的另一目的是制造如上所述的太阳能电池组件的方法及其用于产生电流至外部源的用途,例如, 为固定翼飞机提供动力。

    Process for operating a fuel cell in dry conditions
    48.
    发明授权
    Process for operating a fuel cell in dry conditions 有权
    在干燥条件下操作燃料电池的方法

    公开(公告)号:US08232012B2

    公开(公告)日:2012-07-31

    申请号:US12520017

    申请日:2007-12-20

    IPC分类号: H01M8/10

    摘要: The invention pertains to a process for operating a polymer electrolyte membrane fuel cell (PEMFC), said PEMFC comprising: (a) a membrane comprising at least one fluorinated ionomer [polymer (I)] comprising recurring units derived from tetrafluoroethylene (TFE) and from at least one monomer of formula (M): wherein m is an integer between 1 and 6 and X′ is chosen among halogens (Cl, F, Br, I), —O−M+, wherein M+ is a cation selected among H+, NH4+, K+, Li+, Na+, or mixtures thereof, said polymer (I) having an equivalent weight (EW) of from 700 to 850 g/eq.; (b) a cathode; (c) an anode; said process comprising: (i) feeding gaseous reactants at the electrodes at a relative humidity of at most 66%; (ii) maintaining an average current density between 0.05 and 1.5 A/cm2; and (iii) maintaining an average temperature of more than 65° C.

    摘要翻译: 本发明涉及一种操作聚合物电解质膜燃料电池(PEMFC)的方法,所述PEMFC包括:(a)包含至少一种氟化离聚物[聚合物(I)]的膜,其包含衍生自四氟乙烯(TFE)的重复单元和 至少一种式(M)的单体:其中m是1和6之间的整数,X'选自卤素(Cl,F,Br,I),-O-M +,其中M +是选自H +, NH 4 +,K +,Li +,Na +或其混合物,所述聚合物(I)的当量重量(EW)为700至850g / eq; (b)阴极; (c)阳极; 所述方法包括:(i)在至多66%的相对湿度下在电极处输入气态反应物; (ii)保持0.05至1.5A / cm2之间的平均电流密度; 和(iii)保持超过65℃的平均温度。

    Composite ionomeric membrane
    50.
    发明授权
    Composite ionomeric membrane 有权
    复合离聚物膜

    公开(公告)号:US08133927B2

    公开(公告)日:2012-03-13

    申请号:US11375593

    申请日:2006-03-15

    IPC分类号: C08J5/20

    摘要: A composite ionomeric membrane comprising a layer or film of a porous inert material on which a (per) fluorinated sulphonic ionomer is deposited wherein the sulphonic groups are at the end of short side chains (SSC), said ionomer having: equivalent weight comprised between 280 and 1,700 g/eq; side chains of formula: —O—CF2—CF2—SO3—M+, wherein M is hydrogen or an alkaline metal; said membrane having in each of the two orthogonal directions xy of the plane, after dipping in demineralized water at 100° C. for 30 minutes and preliminary drying at 105° C. under vacuum for one hour, the following size variations: in one direction, size variation lower than 25%; in the other direction, size variation lower than 20%.

    摘要翻译: 一种复合离聚物膜,其包含多孔惰性材料的层或膜,在其上沉积(全)氟化磺酸离聚物,其中所述磺基位于短侧链(SSC)的末端,所述离聚物具有:当量重量在280 和1,700g / eq; 式-O-CF2-CF2-SO3-M +的侧链,其中M为氢或碱金属; 所述膜在平面的两个正交方向xy中的每一个中,在100℃的软化水中浸渍30分钟,并在105℃下在真空下预干燥1小时,以下尺寸变化:在一个方向上 ,尺寸变化低于25%; 在另一个方向,尺寸变化低于20%。