提高纸板电池贮存寿命的措施Ⅰ软封口剂

Methods of extending the strorage life of paper-liner battery

锌锰纸板电池在贮存期间 ,电池失效的原因是多种多样的 ,但大部分为封口不严所造成。目前使用最多的以沥青为主要成分的封口剂 ,在某些条件下不能与锌筒和炭棒达到严密的密封。铁壳电池和使用密封圈的纸板电池采用氯化石蜡和环氧树脂混合而成的软封口剂 ,在宽广的温度范围内保持不固化 ,粘附在锌筒与密封圈、炭棒与密封圈之间的接触部分 ,可防止大气中氧气进入电池、水分从电池中逸出 ,杜绝在电池内部构成锌 空气电池或发生锌的腐蚀 ,从而避免在锌筒和浆层纸之间产生白色结晶 ,电池的开路电压和短路电流下降大大减少 。

There are various reasons for the failure of zinc manganese dioxide paper liner battery during its sto rage period. However, the main factor is that there is not tight seal in the battery. At present, the most popular sealant is pitch sealant, which, sometimes, can not adhere to carbon rod and zinc can perfectly. A soft sealant, which was made of the mixture of chlorinated paraffin and epoxy resin was used in metal jacket battery and the battery with sealing washer. It could prevent oxygen from flowing into battery as well as prevent water vapor from leaking out of it. Moreover, it avoids the formation of zinc air battery and the corrosion of zinc so that there was no white crystal occurring between zinc can and paper liner. As a result, the descent of open circuit voltage and short circuit current of battery was decreased greatly and its storage life was extended.