Preparation method of modified nylon 11 material and flange cushion cover prepared by same

Abstract

The invention discloses a preparation method of a modified nylon 11 material and a flange cushion cover prepared by the preparation method. The flange cushion cover comprises the following componentsin parts by weight: 80-82 parts of PA11; 5-6 parts of glass fiber; 5-6 parts of polyester fibers; 3-5 parts of a maleic anhydride toughening agent; 2-3 parts of an anti-ultraviolet agent; 1-2 parts ofan anti-hydrolysis agent; 2-3 parts of coupling agent. The preparation method comprises the following steps: firstly, mixing the PA11, the glass fibers, the polyester fibers and the maleic anhydridetoughening agent; and then adding auxiliaries such as an anti-ultraviolet agent, an anti-hydrolysis agent and a coupling agent. The density, the hardness, the tensile strength, the elongation, the thermal deformation temperature, the water absorption and the like of the flange cushion cover made of the modified nylon 11 material are effectively and greatly improved, and the use requirements of ship equipment are met. In addition, the design of the flange cushion cover comprises a split type and an integrated type, so that the use requirements under different conditions are met, the insulationeffect of electric insulation treatment is fully ensured, the service life of a ship body and equipment is prolonged, and the overall quality of the ship is improved.

Description

technical field [0001] The invention relates to a preparation method of a modified nylon 11 material and a flange gasket prepared therefrom. Background technique [0002] In the nautical career, the ship is undoubtedly the most important tool and carrier, and in the nautical process, the safety of the ship is of paramount importance. However, since the ship's hull, equipment, piping and other system components are usually made of different metals, these metals have different self-corrosion potentials in seawater. When they directly contact and form a circuit with the surrounding medium, a Metal contact corrosion, that is, galvanic corrosion. In particular, the seawater piping system in ships is composed of complex materials and equipment, so that the piping system often leaks due to galvanic corrosion caused by the contact of dissimilar metals in the seawater medium, which will pose a major threat to the safety of the ship. Therefore, the electrical insulation treatment of...

AI Technical Summary

Problems solved by technology

However, with the development of navigation technology, ship equipment is constantly updated, and its requirements for anti-corrosion are getting higher and higher. The density and hardness of ordinary inert material gaskets and sleeves are difficult to survive in seawater immersion and high-pressure environments. Keep, especially PA11 has a certain water absorption, which makes the size of the parts prepared by it unstable after long-term immersion in seawater; in addition, the tensile strength of PA11 is not enough, and the antistatic property is weak, which not only limits its application range Therefore, it is necessary to improve the existing nylon 11 to meet the requirements of ship equipment.