The Damping Shim(bridge falsework)
Applications: Damping shim(automobile, aircraft), butyl damping shim, rubber sheet of railway product, train rails’ shock pad(board), chloroprene rubber adhesive.
Functions: absorb acid, vulcafor, and it is acidproof, alkaline resisting and ageing resisting.
Requirements: It must not have any smell. The light magnesium oxide is required that 93% of content, 1.5% of calcium, 0.1% of acid insoluble, 4.0 of apparent specific volume. The reactive magnesium oxide is required that the content is from 88% to 90%, the activity is from 120 to 150.
Applications: medical rubber tube
Requirements: 97% of content, 0.5% of calcium, 3-4 of apparent specific volume. Especially the heavy metal must achieve national standard. It is required that the magnesium oxide product must transparent as glass.
Functions: vulcanization accelerator, scorch retarder.