Mayaki
08-14-2011, 02:31 PM
I know about several different materials to make end plates out of for a dry cell, but i was wondering if anyone would be nice enough to help me pick a strong enough end plate material. For the last year I've been struggling with my end plates cracking. The material I've been using is 1/2" thick polycarbonate.
I tried a clamp like design first, which was why I thought my end plates were cracking. I redesigned my dry cell to where the bolts (nylon threaded rod) that hold the cell together go through the plates, gaskets, and endplates. The end plates of the second design cracked within a week.
I’ll post pictures of the first and second design after I make this post. I can post pictures of the cracks on the end plates of the second design in a few days when I get a chance to take pictures.
My plates are arranged as follows. (19 plate cell) - 6”x5” plates
Negative: -
Positive: +
Neutral: N
End plate: |
|-NNNNN+NNNNN-NNNNN+|
I know of the following end plate materials:
Polycarbonate - This stuff is super strong, but has cracked on me every time [3 times now]
Acrylic - I used polycarbonate because it appeared to be stronger than acrylic. I’ve read that these plates crack as well.
HDPE – I’ve read mixed articles on this material absorbing moister. I’m assuming there are different grades of this material?
CPVC – I’ve heard about, but haven’t done much reading.
So my question is what type of end plate material I should use, and how thick should that material be? Also, should I be able to use two end plates for a cell with this many plates, or do I need to put in a center break plate in? Thanks.
I tried a clamp like design first, which was why I thought my end plates were cracking. I redesigned my dry cell to where the bolts (nylon threaded rod) that hold the cell together go through the plates, gaskets, and endplates. The end plates of the second design cracked within a week.
I’ll post pictures of the first and second design after I make this post. I can post pictures of the cracks on the end plates of the second design in a few days when I get a chance to take pictures.
My plates are arranged as follows. (19 plate cell) - 6”x5” plates
Negative: -
Positive: +
Neutral: N
End plate: |
|-NNNNN+NNNNN-NNNNN+|
I know of the following end plate materials:
Polycarbonate - This stuff is super strong, but has cracked on me every time [3 times now]
Acrylic - I used polycarbonate because it appeared to be stronger than acrylic. I’ve read that these plates crack as well.
HDPE – I’ve read mixed articles on this material absorbing moister. I’m assuming there are different grades of this material?
CPVC – I’ve heard about, but haven’t done much reading.
So my question is what type of end plate material I should use, and how thick should that material be? Also, should I be able to use two end plates for a cell with this many plates, or do I need to put in a center break plate in? Thanks.