High-thermal-conductivity flame-retardant weather-resistant encapsulating material for new energy battery and preparation method of encapsulating material

Abstract

The invention discloses a high-thermal-conductivity flame-retardant weather-resistant encapsulating material for a new energy battery. The encapsulating material is prepared from the following raw materials in parts by weight: 25-35 parts of unsaturated polyester resin, 15-25 parts of phenyl silicone resin, 0.15-0.5 part of an ultraviolet absorber, 0.1-0.35 part of an ultraviolet stabilizer, 7-13 parts of talcum powder, 4-6 parts of aluminum hydroxide, 0.5-1.5 parts of graphene, 15-25 parts of vinyl silicone oil, 12-14 parts of a heat-conducting additive, 4-8 part of a coupling agent, 4-6 parts of rare earth oxide and 5-15 parts of a processing aid. The high-thermal-conductivity flame-retardant weather-resistant encapsulating material for the new energy battery has excellent thermal conductivity and is capable of dissipating heat released by a lithium battery in a use process, so that the service life of the battery is remarkably prolonged, and the charging safety of the battery is remarkably improved; besides, the encapsulating material has excellent flame retardance, mechanical property and impact resistance and further has waterproof, moisture-proof, fireproof, explosion-proof and flame-retarding functions; and meanwhile, a preparation method of the encapsulating material is relatively low in material cost and has relatively high use values and good application prospects, the raw material are easily available, and the process is simple and clear.

Description

technical field [0001] The invention relates to the technical field of new energy battery materials, in particular to a high thermal conductivity, flame-retardant and weather-resistant packaging material for new energy batteries and a preparation method thereof. Background technique [0002] New energy vehicle batteries can be divided into two categories, namely batteries and fuel cells. Batteries are suitable for pure new energy vehicles and can be classified as lead-acid batteries, nickel-based batteries (nickel-hydrogen and nickel-metal hydride batteries, nickel-fu and nickel-zinc batteries), sodium ß batteries (sodium-sulfur batteries and Sodium-nickel chloride battery), secondary lithium battery, air battery and other types. Fuel cells are dedicated to fuel cell new energy vehicles and can be divided into alkaline fuel cells (AFC), phosphoric acid fuel cells (PAFC), molten carbonate fuel cells (MCFC), solid oxide fuel cells (SOFC), proton exchange Membrane fuel cell (...

AI Technical Summary

Problems solved by technology

[0003] The existing battery filler is composed of colloidal materials, and its disadvantages are that it has no heat dissipation function, cannot be flame-retardant, and cannot be explosion-proof. In the case of overcharging the battery, the battery is easy to explode and catch fire, resulting in fire accidents.