Transformer shell material and preparation method thereof

Abstract

The invention discloses a transformer shell material which is characterized by comprising, by weight, 40-50 parts of polyurethane resin, 20-30 parts of nitrile-butadiene rubber, 10-20 parts of sound absorbing material, 8-16 parts of aluminum nitride, 4-8 parts of magnesium oxide, 10-15 parts of glass fiber, 1-3 parts of antioxidant and 2-5 parts of silane coupling agent. The heat conductivity of the prepared transformer shell material is 1.9-3.6W / (m*k), the transformer shell material is excellent in mechanical performance, good in insulation performance and excellent in sound absorbing effect, tensile strength is 21.0-33.8MPa, and bending strength is 93.4-98.5MPa.

Description

technical field [0001] The invention belongs to the field of power materials, and in particular relates to a transformer casing material and a preparation method thereof. Background technique [0002] The transformer is a transformer used in the power transmission system. When the transformer is working, it often produces relatively large noise due to the vibration of the iron core and coil, and the internal coil also generates a lot of heat. With the continuous increase of electricity load, the number of transformers has increased rapidly, and the problem of noise pollution has become more and more serious. In addition, if the heat generated by the coil is not dissipated in time when the transformer is working, it will not only damage the internal components, but also affect the normal operation of the transformer. The transformer casing is mainly used to protect the safety of its internal components, and it also needs to have good insulation performance to ensure safety. ...

AI Technical Summary

Problems solved by technology

[0003] Chinese Patent Application No. 201610453525.X discloses a transformer housing material, the composition of which is as follows in parts by mass: 20-30 parts of polyamide, 3.6-6.4 parts of heat-resistant stabilizer, 5-8 parts of melamine cyanurate, monostearin 2.4-6.4 parts of acid glyceride, 2.4-4.8 parts of quartz sand, 2-6 parts of metallocene linear low-density polyethylene, 2.4-8.4 parts of hollow microspheres, 0.8-3.2 parts of toughening agent, 0.6-2.4 parts of lubricant; The invention has a weaker sound-absorbing effect

It solves the problem of poor sound insulation effect of existing transformer shell materials, which is composed of the following raw materials in parts by weight: 30-40 parts of polyurethane resin, 20-30 parts of phenolic resin, 10-20 parts of epoxy acrylic resin, 30-30 parts of glass fiber 40 parts, 10-20 parts of aluminum silicate wool, 20-30 parts of aluminum hydroxide, 20-30 parts of kaolin, 2-8 parts of barium sulfate, 1-2 parts of toluenesulfonic acid, 1-3 parts of phosphoric acid, 2 parts of n-hexane -4 parts, 2-8 parts of sodium dodecylbenzenesulfonate, 0.3-1.4 parts of antioxidant

The invention has strong mechanical performance and good sound insulation effect, but poor heat transfer and heat dissipation effect

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