Self-degradable leaking-prevention and stoppage material and preparation method thereof, self-degradable leaking-prevention and stoppage product and application thereof

The invention provides a self-degradable leaking-prevention and stoppage material and a preparation method thereof, a self-degradable leaking-prevention and stoppage product and an application thereof. The self-degradable leaking-prevention and stoppage material comprises the following raw materials in mass by part: 95-105 parts of water, 6-20 parts of an acrylic acid monomer, 12-20 parts of water-soluble starch, 0.5-1.0 parts of persulfate, and 0.2-0.5 parts of a silane coupling agent. In the above raw materials, the acrylic acid monomer is taken as a polymeric monomer, sulfate is taken as an initiator for initiating polymerization of acrylic acid, a silane coupling agent is used for coupling water-soluble starch and the acrylic acid monomer, at the same time, by controlling the usage amount of the raw materials in the above ratio scope, synergism between raw materials is optimized, and the self-degradable leaking-prevention and stoppage material has excellent permeability restoration ratio and self-degradat