The invention discloses a wide-range
flame-retarding canvas. The wide-range
flame-retarding canvas includes a
fire retardant fabric base material; a layer of
flame-retarding primer is coated on the
fire retardant fabric base material, and the flame-retarding
coating is coated on the flame-retarding primer; the formula and dosage of the flame-retarding primer according to part by weight are: 20-40 parts of
ammonium polyphosphate APP, 5-15 parts of
melamine MEL, 10-20 parts of dipentaerythritol DPER, 0.5-2 parts of
wetting agent, 0.5-2 parts of antifoaming agent, 10-30 parts of pure acrylic
emulsion, 40-50 parts of
ethylene-
vinyl acetate copolymer emulsion, 20-30 parts of 70% of
titanium dioxide
powder syrup, 0.5-2 parts of brightening agent, 100-110 parts of water, and 5-8 parts of
thickening agent. The wide-range flame-retarding canvas can be printed by compatible
solvent type, weak
solvent type and UV solidifying type inks, and has excellent smoothness and
fineness,
coating firmness, good
weather resistance,
moisture-resisting
humidity and exquisite grain line and inkjet
resolution rate. Meanwhile, the wide-range flame-retarding canvas can satisfy the foreign canvas flame-retarding standard and reach the highest flame-retarding standard B1 grade at home.