| 摘要 |
The present invention provides a position-limiting element, a one-way valve, a composition, an elastomeric material, a grafted graphite, and methods for preparing the same, and belongs to the technical field of damping of one-way valves. The position-limiting element of the present invention used in the one-way valve is used to be provided on one end of a mobile element of the one-way valve thereby limiting the open position of the mobile element, and has an elastomeric layer made of an elastomeric material provided on one side thereof for contacting the mobile element. The one-way valve of the present invention includes the above position-limiting element, with low noise, long service life, and a high flow rate of fluid. The elastomeric material of the present invention is formed by cross-linking a composition including butyronitrile rubber; grafted graphite, including graphite particles and graft groups grafted on the graphite particles, wherein the graft groups include groups of a copolymer of butadiene and acrylonitrile. |
