The invention relates to a
flame retardant of an environment-friendly expansion type
flame retardant
coating and a preparation method thereof. In the present invention, tea
saponin is used as gas source, acid source and
carbon source to form a new type of
flame retardant in a certain proportion.
Alkyd resin
varnish is used as base material, and auxiliary agents such as
coupling agent and dispersant are added to form a high-efficiency flame retardant. burn paint. In terms of the weight percentage of the
solid content of the
coating, its important components are:
alkyd resin
varnish 40-60%;
ammonium polyphosphate 25-35%;
pentaerythritol 12-18%; tea
saponin 2-5%;
silane coupling agent 1 -3%; organic
bentonite 1-3%. The preparation method is as follows: mix tea
saponin,
ammonium polyphosphate and
pentaerythritol in proportion,
grind them sufficiently to obtain superfine
powder, then add them to
alkyd resin
varnish in a certain proportion, stir and mix well, add
silane coupling The joint agent and organic
bentonite are fully stirred and dispersed in a high-speed shear mixer to obtain a finished product. The invention does not contain a
halogen flame retardant, has the advantages of low volatility, excellent flame retardancy, good
coating film performance, high efficiency and
environmental protection, and the like.