摘要:
The present invention discloses a process for producing a membrane for separating methane or carbon dioxide, having excellent heat resistance, durability and anti-chemical agent resistance (anticorrosion resistance). The present invention is related to a process for producing a membrane for separating methane or carbon dioxide, which comprises the following steps: (a) preparing a metal alkoxide solution by (i) mixing an acid catalyst, water and an organic solvent, (ii) adding thereto tetraalkoxysilane and mixing, and (iii) then adding thereto a hydrocarbon group-containing trialkoxysilane, of which a hydrocarbon group is selected from the group consisting of an alkyl group having 1 to 6 carbon atoms and a phenyl group, and mixing, (b) applying the metal alkoxide solution on an inorganic porous support, and then (c) calcining the inorganic porous support having metal alkoxide solution layer at a temperature of 30 to 300 °C.
摘要:
[Object] To provide a polypropylene resin composition for use in the formation of a microporous membrane having excellent heat resistance and strength. [Solution] A polypropylene resin composition for use in the formation of a microporous membrane according to the present invention comprises as an essential component an ultra-high-molecular-weight propylene homopolymer (A) that satisfies the following requirements (1) to (4): (1) the intrinsic viscosity [·] is 7 dl/g or more and less than 25 dl/g; (2) the mesopentad fraction ranges from 90.0% to 99.5%; (3) the melting point ranges from 153°C to 167°C; and (4) in an elution temperature-elution volume curve measured by temperature-rising elution fractionation (TREF), the maximum peak has a peak top temperature in the range of 116°C to 125°C and a half-width of 7.0°C or less.
摘要:
The invention relates to microporous polymeric membranes suitable for use as battery separator film. The invention also relates to a method for producing such a membrane, batteries containing such membranes as battery separators, methods for making such batteries, and methods for using such batteries.
摘要:
[Object] To provide a polypropylene resin composition for use in the formation of a microporous membrane having excellent heat resistance and strength. [Solution] A polypropylene resin composition for use in the formation of a microporous membrane according to the present invention comprises as an essential component an ultra-high-molecular-weight propylene homopolymer (A) that satisfies the following requirements (1) to (4): (1) the intrinsic viscosity [·] is 7 dl/g or more and less than 25 dl/g; (2) the mesopentad fraction ranges from 90.0% to 99.5%; (3) the melting point ranges from 153°C to 167°C; and (4) in an elution temperature-elution volume curve measured by temperature-rising elution fractionation (TREF), the maximum peak has a peak top temperature in the range of 116°C to 125°C and a half-width of 7.0°C or less.
摘要:
The present invention relates to a membrane with at least one molecular mono layer built up of low molecular aromatics and cross-linked in the lateral direction, wherein the membrane comprises a thickness in the range from 1 to 200 nm and a perforation in form of openings with a diameter in the range from 0.1 nm to 1 μm. The invention further relates to a method for the production thereof and use thereof.
摘要:
A microporous polyolefin membrane comprising a polyethylene resin, and polypropylene having a weight-average molecular weight of 6 x 105 or more and a heat of fusion of 90 J/g or more (measured by a differential scanning calorimeter), a fraction having a molecular weight of 1.8 x 106 or more being 10% or more by mass of the polypropylene.