2 results about "Polytetrahydrofuran" patented technology

The invention discloses a permanent compression resistant sealing ring for a carrier roller, which is prepared from the following raw materials in parts by mass: 80 to 120 parts of nitrile rubber, 10 to 20 parts of fluororubber, 5 to 15 parts of graphene oxide, 10 to 20 parts of inorganic composite carbon, 5 to 15 parts of polytetrahydrofuran ether glycol, 2 to 8 parts of isophorone diisocyanate, 1 to 2 parts of zinc oxide, 1 to 2 parts of stearic acid, 0.1 to 1 part of dibutyltin dilaurate, 1 to 2 parts of antioxidant, 1 to 2 parts of plasticizer and 1 to 2 parts of accelerant. 1-2 parts of sulfur; wherein the inorganic composite carbon takes graphite carbon as a carrier, and glassy carbon is adopted to fill and coat the graphite carbon. The nitrile rubber and the fluororubber are adopted as main materials, multiple high-strength barrier layers are formed in a product after the pretreated graphene oxide is subjected to three-dimensional crosslinking in the nitrile rubber and the fluororubber, and under the combined action of the inorganic composite carbon, not only is the sealing effect ensured, but also the wear resistance and the heat resistance of the product can be effectively enhanced, and the permanent compression resistance of the sealing ring is excellent.