Microfiber glass separators

The microfiber glass separators have to fill the space between the electrodes completely the backweb thickness, is thus identical to the total thickness. Due to the high compressibility of such porous glass mats, a standard measuring pressure of 2 kPa or 10 kPa (BCI method) is generally used during assembly they are compressed... 

Polyethylene separators Phenol- formaldehyde- resorcinol separators PVC sepa- rators Rubber separators Microfiber glass mat separators Total... 

For the separation of such batteries, gel construction and microfiber glass fleece separators again compete because of the deep discharge cycles, the gel construction with its lower tendency to acid stratification and to penetration shorts has advantages for the required power peaks, microfiber glass fleece construction would be the preferred solution. The work on reduction of premature capacity loss with lead-calcium alloys has shown that considerable pressure (e.g., 1 bar) on the positive electrode is able to achieve a significantly better cycle life [31-36], Pressure on the electrodes produces counter pressure on the separators, which is not unproblematic for both separation systems. New separator developments have been presented with... 

Microfiber glass fleece mats are typically produced from a blend of 20 - 30 percent glass microfibers <1 //m in diameter, with the balance of the glass fibers thicker (3 - 10 //m) and longer (cf. Fig. 1), on a specialized paper machine (Fou-drinier), since this is the only way of achieving the desired tensile strength without binder. The material is supplied in roll form, even though it is normally not processed into pockets, which are not required due to the absence of free electrolyte. The classification here as a leaf separator should be seen in this sense. 

The range of microfiber glass mat separators offered by the leading producers are presented in Sec. 9.2.3.3 with typical data in connection with their predominant application in sealed stationary batteries. 

Because of the increased shedding with these alloys, pure leaf separation is hardly suitable. Separations with supporting glass mats or fleeces as well as microfiber glass mats provide technical advantages, but are expensive and can be justified only in special cases. Also under these conditions of use the microporous polyethylene pocket offers the preferred solution [40]. Lower electrical properties at higher temperatures, especially decreased cold crank duration, are battery-related the choice of suitable alloys and expanders gains increased importance. 

Absorptive microfiber glassmat separators (100% glass fibers ) ... 

AMER-SIL s. a, [861 has recently introduced a microfiber glass fleece separator ( AMER-GLASS ). 

Because of the increased shedding with these alloys, pure leaf separation is hardly suitable. Separations with supporting glass mats or fleeces as well as microfiber glass mats provide technical advantages, but are expensive and can be justified only... 

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