靠逼视频,日韩三级中文字幕91,很狠狠很久久久久久久之,1级蜜臀av

Home Products Industrial

Proton-exchange Membrane

PEM: the core component of fuel cell, plays a vital role in the performance and life of the cell. Structure and principle of PEM: composite membrane based on expanded polytetrafluoroethylene (ePTFE) coated with perfluorosulfonic acid resin; Three layer structure: the middle layer is ePTFE, and the upper and lower layers are sulfonic acid resin. The sulfonic acid group in the membrane absorbs water, and H+combines with the water molecule, jumping from a fixed sulfonic acid radical site to another sulfonic acid radical site in the form of hydrated proton (H3O+) for proton conduction. Cobbetter's years of experience in ePTFE membrane development and membrane material coating can not only ensure the excellent performance of the PEM, but also reduce the differences between batches of the PEM, and ensure the consistency of product quality.
Recommended Applications:
Request a Quote

Description

The Role of PEM

  • Conducting protons
  • Isolate gas
  • Obstructing electrons

Specifications

Basic Parameters

Result Test Conditions
Thickness 10±1 μm 25°C 50%RH
Surface density 21±2 g/cm3 25°C 50%RH


Hydrolysis Performance

Result Test Conditions
Swelling Rate MD ≤5.0 % 100°C 10min
TD ≤5.0 % 100°C 10min


Mechanical Properties

Result Test Conditions
Tensile Strength MD ≥60 MPa 25°C 50%RH
TD ≥80 MPa 25°C 50%RH
Elastic Modulus MD ≥400 MPa 25°C 50%RH
TD ≥600 MPa 25°C 50%RH


Electrochemical Performance

Result Test Conditions
Proton Conducctivity ≥110 mS/cm 25°C water bath
Ion Exchange Equivalent 1000-1200 g/mol acid-base titration

Ordering Information

Related Products

久久久无码成人| 小粉无码| 中国韩国欧美一区二区三区| 国产欧美在线观看成人精品| 国产日韩欧美色区一区二区| 亚洲久久婷婷| 艹骚视频在线观看| 日韩精品系列| 99久久国际视频偷拍| 欧美 久久久久| 高清无一区二区| 日日操天天插| 亚洲久久婷| 18精品久久久无码午夜福利黑人 | 色天天蜜臀| 韩国亚洲日本中文字幕在线| 成熟妇了亚洲图片| 狠狠综合久久久久综合网站 | 一本一道久久综合狠狠| 精品在线| 四十熟妇一区二区三区| 东京热日本色一道本| 贵州少妇精品后入| 91麻豆精品一二区二区| 91精品久久久狠狠人妻网站| 91日韩约| 巴彦淖尔市| 亚洲色中色综合网| 国产AV福利AV| 欧洲日韩一区二区精品视频| 99精品欧美 区二区三区| 艹逼小视频二区| 欧美日韩国产中文无码| 国产偷∨国产偷∨精品视频| 大肉棒的视一进一出视频在线观看| 日韩大几把视频| 四虎www色色| 免费在线视频色诱| 综合国产三级| 日美精品三级| 曰曰久久久久|