Wear resistant, corrosion resistant and heat resistant high-performance magnetic plastic gate valve sealing material

Abstract

The invention discloses a wear resistant, corrosion resistant and heat resistant high-performance magnetic plastic gate valve sealing material, and belongs to the technical field of high molecular materials. The sealing material is prepared from the following raw materials: iron chloride hexahydrate, ethylene glycol, modified hyperbranched polyester, vinyl ester resin, polyvinylpyrrolidone, polyurethane resin, liquid nitrile rubber, polyethylene glycol, sodium acetate trihydrate, sodium citrate, acrylic acid, ammonium persulfate, methylethyl ketone peroxide, cobalt naphthenate, ethyl acetate,succinic anhydride and crystalline flake graphite. By adopting a new preparation process, nano magnetic powder is more uniformly dispersed in a plastic matrix, and a resin matrix forms an interpenetrating polymer network, so the sealing material has better mechanical properties and wear resistance, and further the magnetic property of the material is improved. The magnetic sealing material disclosed by the invention has the characteristics of good corrosion resistance, acid and alkali resistance, good wear resistance, high magnetic property, good heat resistance, easy machine shaping propertyand low cost.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a wear-resistant, corrosion-resistant and heat-resistant high-performance magnetic plastic door valve sealing material. Background technique [0002] As the name implies, magnetic plastics are plastic products with magnetism. Ordinary plastics are not ferromagnetic. However, special methods can be used to form ferromagnetic materials: one is to try to change the structure of the polymer material to make itself magnetic, but there are few pure magnetic polymer materials that have been found, and the price is high, so it cannot be industrialized at present; Magnetic powder is added to the plastic matrix to form a composite magnetic plastic. Magnetic plastics produced by this method have been widely used in our lives. Composite magnetic plastics are mainly composed of resin and magnetic powder. Resin generally plays a role in bonding, and inorganic magnetic powder is the...

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Problems solved by technology

[0007] Chinese patent publication number: "CN103450590A" discloses a magnetic plastic and its preparation method. The magnetic plastic is light in texture and good in stability, but its corrosion resistance is poor, its heat resistance is not good, and its function is single, which cannot meet the actual requirements. use requirements

Chinese Patent Publication No.: "CN102820120A" discloses a magnetic plastic used in the magnetic closure system of disposable absorbent products and its preparation method. Nano-scale magnetic powder is surface-treated with a dispersant and blended with plastic particles, extruded by a twin-screw extruder , tape casting, blow molding, calendering and other processes to make magnetic plastics to achieve the function of magnetic closure, but its corrosion resistance is poor, heat resistance is not good, and the function is single, which cannot meet the needs of actual use.

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