| 摘要 |
[Problem] A sorbent-supporting metal plate using an organic polymer sorbent has the characteristic of swelling due to the sorbent containing water, and therefore when mixing a coating fluid using a solvent containing a large amount of water to produce a sorbent coating film on a metal plate, the problem occurs of cracking in the sorbent coating film thus formed due to contraction of the sorbent during drying. Also, adhesion with the metal plate is worsened, and a problem exists of the sorbent coating film separating in conditions such as submersion in water. The present invention was created on the basis of observation of the current state of this prior art, the purpose of the present invention being to provide a sorbent coating fluid in which the problems of cracking and separation will not occur, a metal plate obtained by applying the coating fluid, and, in addition, a heat exchanger. [Solution] A sorbent coating fluid containing: an organic polymer sorbent particle comprising an organic polymer having a carboxyl group and a cross-linked structure; a cationic polymer adhering to the surface of the sorbent; a binder resin; alcohol; and water. |
