种不对称质子交换膜及其制备方法和应用

• Format: Patent
• Language: Chinese
• Published: 26.01.2018
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; BASIC ELECTRIC ELEMENTS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTRICITY; GENERAL PROCESSES OF COMPOUNDING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

本发明属于质子交换膜领域，尤其涉及种不对称质子交换膜及其制备方法和应用。本发明提供的不对称质子交换膜由含氰基的磺化聚苯醚酮质子交换膜在三氟甲磺酸溶液中浸渍制成。本发明通过使含氰基的磺化聚苯醚酮质子交换膜表面的氰基自聚，在含氰基的磺化聚苯醚酮质子交换膜的表面构建了阻醇层，从而实现了对含氰基的磺化聚苯醚酮质子交换膜表面的修饰和结构调整，不仅最大限度的保持了原有含氰基的磺化聚苯醚酮质子交换膜的质子电导率，而且阻醇层的形成显著降低了膜的甲醇透过能力。实验结果表明，本发明提供的不对称质子交换膜室温下的质子导电率高于27mS cm，室温下的甲醇透过率低于0.41×10cms。 The invention belongs to the field of proton exchange membranes and particularly relates to an asymmetric proton exchange membrane and a preparing method and application thereof. The proton exchange membrane is formed by steeping a sulfonation polyphenyl ether ketone proton exchange membrane containing a cyano group in a trifluoromethanesulfonic acid solution. According to the asymmetric proton exchange membrane and the preparing method and application thereof, an alcohol blocking layer is structured on the surface of the sulfonation polyphenyl ether ketone proton exchange membrane containing the cyano group through the self-polymerization of the cyano group of the surface of the sulfonation polyphenyl ether ketone proton exchan