摘要:
A fluorinated ion exchange polymer prepared by grafting a monomer on to a base polymer, wherein the grafting monomer is selected from the group consisting of structure 1a, structure 1b and mixtures thereof, (INSERT 1a and 1b HERE) wherein Y is selected from the group consisting of —RFSO2F (sulfonyl fluoride), —RFSO3M (fluorosulfonic acid or salt), RFSO2NH2 (fluorosulfonamide), and —RFSO2N(M)SO2R2F (imide); wherein M is H, an alkali cation, or ammonium; and RF and R2F groups are perfluorinated or partially fluorinated, and may optionally include ether oxygens; and n is between 1 and 2 for 1a, or n is between 1 and 3 for 1b. These ion exchange polymers are useful in preparing catalyst coated membranes and membrane electrode assemblies used in fuel cells.
摘要翻译:通过将单体接枝到基础聚合物上制备的氟化离子交换聚合物,其中接枝单体选自结构1a,结构1b及其混合物(INSERT 1a和1b HERE),其中Y选自基团 由-SO 2 SO 2 F(磺酰氟)组成,-RF 3 SO 3 M(氟磺酸 或盐),R 2 SO 2 NH 2(氟磺酰胺)和R 1 F SO 2 2 N(M)SO 2 R 2(酰亚胺); 其中M为H,碱性阳离子或铵; 并且R 1和R 2基团是全氟化的或部分氟化的,并且可任选地包括醚氧; 对于1a,n对于1和2之间,对于1b,n对于1和3之间。 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。
摘要:
A fluorinated ion exchange polymer is prepared by grafting a monomer onto a base polymer, wherein the grafting monomer is selected from the group consisting of structure 1a, 1b and mixture thereof; wherein Y is selected from the group consisting of —RFSO2F, —RFSO3M, —RSO2NH2 and —RFSO2N(M)SO2R2F, where in M is hydrogen, an alkali cation or ammonium; and RF and R2F are perfluorinated or partially fluorinated, and may optionally include ether oxygens; and n is between 1 and 2 for 1a, or n is between 1 and 3 for 1b. These ion exchange polymers are useful is preparing catalyst coated membranes and membrane electrode assemblies for fuel cells.
摘要:
A fluorinated ion exchange polymer is prepared by grafting at least one grafting monomer derived from trifluorostyrene on to at least one base polymer in a organic solvent/water mixture. These ion exchange polymers are useful in preparing catalyst coated membranes and membrane electrode assemblies used in fuel cells.
摘要:
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.
摘要:
Disclosed are ionomers comprising functionalized polyolefins having fluoroalkyl sulfonate pendant groups and ionically conductive compositions formed therefrom by the addition of solvents.
摘要:
Disclosed are ionomers comprising functionalized polyolefins having fluoroalkyl sulfonate pendant groups and ionically conductive compositions formed therefrom by the addition of solvents.
摘要:
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 1 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.
摘要翻译: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包含直链或支链全氟烷基 任选含有氧或氯的1至14个碳原子,1至8个碳原子的烷基,6至12个碳原子的芳基或6至12个碳原子的取代的芳基; RF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,NH2,-N(M)SO2R2F和C(M)(SO2R2F)2,其中M包括H,碱性阳离子或铵; R 2 F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,其中烷基或芳基可全氟化或部分氟化; 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。
摘要:
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.
摘要:
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.
摘要:
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.