The invention discloses environment-friendly sealing glue for a threading connector of a
water supply network and a preparation process of the environment-friendly sealing glue. The glue takes waterborne
polyurethane resin as an environment-friendly base material, and is matched with a compound modified filler, a
plant extract modified bio-based
tackifier, a waterborne
isocyanate environment-friendly curing agent, a functional additive and the balance of deionized water, wherein the compound modified filler is prepared from
nano silicon dioxide and talcum
powder in a
mass ratio of (2-5): 1, and the functional additive is prepared by compounding a food-grade
preservative, an anti-aging agent and a defoaming agent. The glue is low in VOCs content, environment-friendly, free of pungent smell, excellent in sealing durability, low in connector
leakage rate, capable of being constructed under a micro-wet working condition, simple in preparation and application process, free of special equipment, low in cost and suitable for large-scale production, and the glue is low in VOCs content, environment-friendly, free of pungent smell, excellent in sealing durability and low in connector
leakage rate and can be used for construction under the micro-wet working condition. And the comprehensive construction cost is low, the method is suitable for sealing of multi-material pipelines in old communities and threading connectors of newly-built
water supply pipe networks, the stability of a
water supply system is effectively improved, and the later operation and maintenance cost is reduced.