Abstract:
A linkage mechanism includes a fixing member, a rotary member, a support member and a sliding module. A first end of the rotary member is rotatably assembled to the fixing member. A first end of the support member is rotatably hinged to the second end of the rotary member, and the second end of the support member is hinged with the sliding module. The sliding module includes a sliding member and a sliding rod slidably assembled to the sliding member. The sliding member is slidably mounted to the fixing member, and further hinged to the second end of the support member. The sliding member defines a sliding hole. The sliding rod is rotatably assembled to the rotary member together with the fixing member, and further slidably passing through the sliding hole of the sliding member. An electronic device using the linkage mechanism is also provided.
Abstract:
A hinge mechanism includes a fixing member, a rotary member, a rotary member, an adjusting member and a support member, all of which are interconnected. The rotary member is capable of being positioned in a preset manner to form an acute angle relative to the fixing member, the adjusting member is capable of being positioned in a preset manner to form an acute angle relative to the rotary member; and the support member is capable of being positioned in a preset manner to form an obtuse angle relative to the adjusting member. An electronic device using the hinge mechanism is also provided.
Abstract:
Crosslinkable polymers and crosslinked fluoropolymers are prepared from selected fluorinated dienes and monomers containing Br and I. Also disclosed are proton conductive membranes of these crosslinked fluoropolymers.
Abstract:
A monomer having the structure (I) wherein RF is linear or branched perfluoroalkene group, optionally containing oxygen or chlorine; and n is 1 or 2. These monomers are used in the preparation of homopolymers and copolymers that are useful in preparing polymer electrolyte membranes. Electrochemical cells, such as fuel cells, containing these membranes are also described.
Abstract:
Disclosed are ionomers comprising functionalized polyolefins having fluoroalkyl sulfonate pendant groups and ionically conductive compositions formed therefrom by the addition of solvents.
Abstract:
A process is disclosed for making diiodofluorinated compounds of the formula ICF.sub.2 (A).sub.n I wherein n is an integer of at least 1 and each A is CXYCQZ wherein each X, Y, Q, and Z are each independently selected from the group consisting of H, F, Cl, R.sub.F and OR.sub.F, and R.sub.F is a perfluoroalkyl group or perfluorinated polyether group wherein one or more of the fluorines is optionally replaced by a substituent selected from the group consisting of chlorine, bromine, iodine, hydrogen, sulfonyl fluoride, nitrile, ester, acyl chloride and acyl fluoride. The process involves reacting an olefin of the formula CXY.dbd.CQZ with CF.sub.2 I.sub.2 at a temperature in the range of from about 120.degree. C. to 240.degree. C.Diiodofluorinated compounds of the formula ICF.sub.2 CH.sub.2 CHR.sub.F I are also disclosed.
Abstract:
Partially fluorinated ionic compounds are prepared. They are useful in the preparation of partially fluorinated dienes, in which the repeat units are cycloaliphatic.
Abstract:
A fluorinated ion exchange polymer prepared by grafting at least one grafting monomer on to at least one base polymer, wherein the grafting monomer comprises structure 1a or 1b: wherein Z comprises S, SO2, or POR wherein R comprises a linear or branched perfluoroalkyl group of 1 to 14 carbon atoms optionally containing oxygen or chlorine, an alkyl group of 1 to 8 carbon atoms, an aryl group of 6 to 12 carbon atoms or a substituted aryl group of 6 to 12 carbon atoms; RF comprises a linear or branched perfluoroalkene group of I to 20 carbon atoms, optionally containing oxygen or chlorine; Q is chosen from F, —OM, NH2, —N(M)SO2R2F, and C(M)(SO2R2F)2, wherein M comprises H, an alkali cation, or ammonium; R2F groups comprises alkyl of 1 to 14 carbon atoms which may optionally include ether oxygens or aryl of 6 to 12 carbon atoms where the alkyl or aryl groups may be perfluorinated or partially fluorinated; and n is 1 or 2 for 1a, and n is 1, 2, or 3 for 1b. These ion exchange polymers are useful in preparing catalyst coated membranes and membrane electrode assemblies used in fuel cells.
Abstract translation:通过将至少一种接枝单体接枝到至少一种基础聚合物上制备的氟化离子交换聚合物,其中接枝单体包含结构1a或1b:其中Z包含S,SO 2或POR,其中R 包括任选含有氧或氯的碳原子数为1〜14的直链或支链全氟烷基,碳原子数为1〜8的烷基,碳原子数6〜12的芳基或碳原子数6〜12的取代芳基。 R F包括任选含有氧或氯的1-20个碳原子的直链或支链全氟烯基; Q选自F,-OM,NH 2,-N(M)SO 2,R 2, ,和C(M)(SO 2 R 2)2,其中M包括H,碱 阳离子或铵; R 2基团包括1至14个碳原子的烷基,其可任选地包括醚氧基或6至12个碳原子的芳基,其中烷基或芳基可以是全氟化的,或 部分氟化; 对于1a,n为1或2,对于1b,n为1,2或3。 这些离子交换聚合物可用于制备用于燃料电池的催化剂涂覆的膜和膜电极组件。
Abstract:
The present invention provides for a compound having the following structure: Zr(O3PZqYnX)2-m(03PR)m, wherein X=a functional group such as CO2H, PO(OH)2, and SO3H, and SO2NHSO2W, wherein W=aryl of 6 to 10 carbon atoms or Y; Y=perfluoro-linear, branched or cyclic alkylene group, wherein the alkylene is 1-20 carbon atoms, or a fluorinated group containing at least one substituent selected from the group consisting of oxygen, chlorine and bromine; Z=alkylene of 1-12 carbon atoms, aryl of 6-10 carbon atoms, or a heterocyclic aryl group of 3-10 carbons atoms; R=alkyl of 1-12 carbon atoms, aryl of 6-10 carbon atoms, substituted alkyl, or substituted aryl, wherein the substituent is selected from the group consisting of F, Cl, perfluoroalkyl, alkyl of 1-12 carbon atoms and aryl of 6-10 carbon atoms; n=0 or 1; q=0 or 1; and m=0 to 1.5; with the proviso that when n=0, and q=1, Z=at least one heterocyclic group having 3 to 10 carbon atoms, 1 to 5 nitrogen atoms and 0 to 4 oxygen atoms. The invention also provides a polymer electrolyte membrane, a catalyst coated membrane and a fuel cell having this compound.
Abstract translation:本发明提供具有以下结构的化合物:Zr(O 3 PZ)X Y X 2)2-m < 其中X = CO 2 H,PO(OH)2,SO 2等官能团, 其中W = 6至10个碳原子的芳基或Y;其中W = 6至10个碳原子的芳基或Y; Y =全氟直链,支链或环状的亚烷基,其中亚烷基为1-20个碳原子,或含有至少一个选自氧,氯和溴的取代基的氟化基团; Z = 1-12个碳原子的亚烷基,6-10个碳原子的芳基或3-10个碳原子的杂环芳基; R = 1-12个碳原子的烷基,6-10个碳原子的芳基,取代的烷基或取代的芳基,其中取代基选自F,Cl,全氟烷基,1-12个碳原子的烷基和芳基 6-10个碳原子; n = 0或1; q = 0或1; m = 0〜1.5; 条件是当n = 0且q = 1时,Z =至少一个具有3至10个碳原子,1至5个氮原子和0至4个氧原子的杂环基。 本发明还提供了一种聚合物电解质膜,催化剂涂覆膜和具有该化合物的燃料电池。
Abstract:
Compositions containing modified fullerenes and their use, for example, as films for membranes in electrode assemblies for electrochemical cells and fuel cells such as fuel cells are described.