Nylon composite material with low fuel oil permeability rate used for fuel oil tank and preparation method thereof

Abstract

The invention provides a nylon composite material with low fuel oil permeability rate used for a fuel oil tank, which is characterized by containing a main material, a modifier, an elastomer and an auxiliary agent, wherein the main material is selected from a nylon 6 copolymer, a nylon 66 copolymer, a nylon 6 / 66 copolymer or a random mixture thereof, the modifier is selected from ABS, polyethylene, PC, PPS, PPO, PBT, PET or a random mixture thereof, the elastomer is selected from POE, TPE, EPDM or a random mixture thereof, and the auxiliary agent contains a temperature-resistant anti-aging agent, a lubricant and a nucleating agent. The nylon composite material with low fuel oil permeability rate used for the fuel oil tank, which is provided by the invention, has favorable blow-molding forming performance and very large market value, the fuel oil permeability rate is below 1.7g / m<2>*24h, and the shock-resistance strength at low temperature (negative 40 DEG C) reaches 65-95kJ / m<2>.

Description

technical field [0001] The invention relates to a nylon composite material for a fuel tank, in particular to a low fuel permeability nylon composite material for a fuel tank and a preparation method thereof. Background technique [0002] The production of modern automobiles and motorcycles requires higher speed per hour and lower energy consumption. The main countermeasure is to use lighter engineering plastics instead of heavy metal materials to make motorcycle parts. Fuel tank is an important part of automobiles and motorcycles. It is used to store fuel gasoline. It is important for automobiles and motorcycles to achieve the above goals by using lightweight engineering plastic polyethylene materials or high-performance polymer materials instead of metal materials to manufacture fuel tanks. meaning. [0003] The main material of the polyethylene fuel tank is high-density polyethylene (HDPE), and prior art such as CN1075489A, CN1036465C, CN1036596C, CN101081543A etc. Compa...

AI Technical Summary

Problems solved by technology

The nylon material prepared by the above-mentioned technical scheme has a fuel permeability that is difficult to reach 2 g / 24 hours stipulated in the national standard "GB 20998-2007 Motorcycle and Moped Fuel Evaporative Pollutant Emission Limits and Measurement Methods", and cannot adapt to market demands. demand; in addition, its low-temperature impact resistance is equivalent to or only 1-2 times higher than that of ordinary nylon 6, which is far lower than the low-temperature impact strength of this technology, which is an order of magnitude higher than that of ordinary nylon, and cannot meet the requirements of withstand conditions in severe cold climates. High Vibration Motorcycle Fuel Tank Material Requirements

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