Technolog Co. Ltd.Development of technology and production
of fine chemicals and custom-made chemicals
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Polyvinilformal foam TPVF-3BF
Polyvinilformal foam TPVF-3BF is gas-filled polymer material that has three-dimensional cellular structure and high hydrophilic of polymer base. It gets the reaction of acetylation of polyvinyl alcohol (PVA) with formaldehyde in an acidic aqueous medium. Polyvinilformal foam TPVF-3BF has a high water absorbing capacity (to 98% volume and 700% by weight). It becomes soft and elastic when it is wet but it restores the original shape when it is dry. Polyvinilformal foam TPVF-3BF is used as filter and absorbent material.
Polyvinilformal foam TPVF-3BF has a high wear resistance and chemical resistance. Polyvinilformal foam TPVF-3BF could used:
- as cleanable prefilters for air filtration and organic liquids from water;
- as drains, wick, roller feed and water transport systems and on its basis;
- as medium for plants and microorganism;
- as water-absorbing filters for refrigerants, diesel fuel, oils.
Polyvinilformal foam TPVF-3BF is produced the forms:
- discs – diameter 400 ± 50 mm and height from 15 to 100 mm;
diameter from 270 to 300 mm and height from 50 to 100 mm;
- blocks - 500 х 500 х 5-7 or 400 х 400;
- cylinders - height from 300 to 400 mm and diameter 200 mm;
- and other sizes made-to-order.