FIRE RESISTANT COATED POLYESTER MINE GRID AND METHOD FOR PRODUCING IT

    公开(公告)号:US20210198841A1

    公开(公告)日:2021-07-01

    申请号:US17058148

    申请日:2018-06-08

    Abstract: The invention is drawn to a method of making a fire-resistant mine-grid comprising the following steps: providing a poly(vinyl chloride) (PVC) plastisol, providing a polyester yarn mesh fabric, coating the polyester yarn mesh fabric with the PVC plastisol, heating the coated fabric for about 5 to 20 minutes, more preferably for about 5 to 15 minutes, to a temperature comprised between 110° C. and 150° C., so as to effect gelatinization of the PVC plastisol and form a plasticized PVC coating enveloping the polyester yarns of the mesh fabric, wherein the PVC plastisol, comprises (a) a poly(vinyl chloride) base resin, (b) from 60 to 140 phr of a primary plasticizer which is tris-(2-chloro-isopropyl)phosphate (TCPP), (c) from 40 to 140 phr of a secondary plasticizer, (d) from 145 to 230 phr of an inorganic filler.

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