| 摘要 |
PURPOSE: A two-component coating agent is provided to prevent the scattering of granular-powder material, and to be not toxic, to be easily manufactured, and to have simple workability. CONSTITUTION: A two-component coating agent comprises: a first liquid as a film forming agent consisting of 3-10 parts by weight of polyvinylalcohol and 1-2 parts by weight of polyhydric alcohol on the basis of 100.0 parts by weight of water; a second liquid as a hardener consisting of 6-12 weight% of a boron compound with pH 7.5-9. The concentration of the second liquid is 2-3 times than the concentration of the first liquid. The boron compound is boron or borax. The polymerization degree of the polyvinylalcohol is 1,000-5,000, and the hydrolysis degree is 70-99% (mol/mol).
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