The invention provides a single-component
polyurethane foam joint mixture and a preparation method thereof, and is characterized in that the single-component
polyurethane foam joint mixture comprises the following
raw material components: 7-11 parts of mixed polyether, 2-4 parts of a foam stabilizer, 36-42 parts of seed wrapping
wax, 1-3 parts of a catalyst, 1.5-4.5 parts of a bactericide, 2-4 parts of an insecticide, 1.5-4.5 parts of a rooting agent, 19-23 parts of polymerized MDI, and 20-24 parts of a
propellant. The invention has the advantages that: 1, the product adopts a sterilization insecticide, so that corresponding agricultural
crop plants are prevented from being damaged by
bacteria, mildewing and diseases and pests; 2, the rooting agent is added, so that
plant root growth is promoted, plants can absorb nutrients, and healthy and strong growth of the plants is promoted; 3, the slow-rebound polyether
polyol and the delayed catalyst have a synergistic effect, a
propellant with a slow volatilization speed is preferably selected, and the post-foaming effect is obvious; and 4, the seeds are coated with paraffin, thereby being environment-friendly, non-toxic and beneficial to improving the
fertilizer utilization rate. The invention also discloses a preparation method of the single-component
polyurethane foam joint mixture.