Nitrile rubber protective sleeve

Abstract

The invention belongs to the field of sealing materials, in particular to a nitrile rubber protective sleeve, which comprises the following ingredients in parts by weight: 20 to 30 parts of nitrile rubber, 2 to 8 parts of calcined clay, 6 to 10 parts of talcum powder, 1 to 4 parts of chlorcosane, 0.01 to 0.04 part of phthalocyanine blue, 0.5 to 3 parts of zinc oxide, 0.1 to 0.5 part of age inhibitors RD, 0.1 to 0.4 part of age inhibitors H, 0.2 to 0.6 part of stearic acid, 0.5 to 2 parts of coumarone, 8 to 12 parts of white carbon black, 1 to 4 parts of di octyl phthalate (DOP) softening agents, 0.5 to 1.2 parts of accelerators DM, 0.2 to 0.8 part of accelerator tetramethylthiuram disulfide (TMTD) and 0.1 to 0.3 part of sulphur. The nitrile rubber protective sleeve adopting the recipe has the advantages that the physical and mechanical performance of the nitrile rubber protective sleeve are not reduced, but the cost is greatly reduced, the surface smoothness of products and each applicability of an oil well are also greatly improved, and the properties such as acid resistance, base resistance, oil resistance, temperature resistance, wear resistance, flame retardance and the like of the products are also greatly improved.

Description

technical field [0001] The invention belongs to the field of sealing materials, in particular to a nitrile rubber sheath. Background technique [0002] The rubber content of the nitrile rubber sheath produced by the existing formula is generally about 52%. Since the price of the rubber is more expensive, the higher the rubber content of the sheath, the higher the cost. The commercially available rubber sheath Due to its higher rubber content, the price is also more expensive. If you want to reduce the cost of the nitrile rubber sheath, you need to reduce its rubber content, and if you directly reduce the rubber content, it will inevitably affect the various properties of the nitrile rubber sheath, for example, due to the reduction of the rubber content resulting in Its physical and mechanical properties are reduced, and the properties of the product such as acid resistance, alkali resistance, oil resistance, temperature resistance, wear resistance, and flame retardancy wil...

AI Technical Summary

Problems solved by technology

In addition, from the appearance point of view, the nitrile rubber sheath is rough and not smooth, and its various performance indicators of oil field environment resistance are low