Multilayer tube internal layer polymer composite material for automobile fuel pipes, and preparation method thereof

Abstract

The invention relates to a multilayer tube internal layer polymer composite material for automobile fuel pipes, and a preparation method thereof. The internal layer material comprises, by weight, 50-70 parts of nylon resin, 10-30 parts of PE, 5-10 parts of EVM, 10-30 parts of a compatilizer and 1-5 parts of an assistant. Compared with existing materials, the material in the invention has the advantages of few micro-molecular compounds, less precipitation in use, and effectiveness in reduction or avoiding of formation and accumulation of carbon in engine combustion chambers. The composite material has the advantages of effectiveness in avoiding of the use of a plasticizer and a flexibilizer, remarkable reduction of the fuel leaching rate, reduction or avoiding of the formation of carbon inthe engine combustion chambers, and keeping of good low-temperature performances and high-temperature performances.

Description

Technical field [0001] The invention relates to a polymer composite material with a multilayer tube inner layer for automobile fuel pipes and a preparation method thereof, and belongs to the field of automobile materials. Background technique [0002] With the continuous improvement of our income and living standards, automobiles have entered the homes of ordinary people. They have become an indispensable transportation tool for our daily life. However, environmental issues have become a major problem that plagues us, and the self-emissions of automobile fuel pipes are also Gradually entering part of the national automobile emission standards, the multi-layer composite of automobile fuel multi-layer pipes solves this problem very well, but the inner layer of the multi-layer fuel pipe is mostly toughened PA6, which is toughened to the current use. The effect requires the addition of a considerable proportion of tougheners and plasticizers. Most of these additives are small molecul...

AI Technical Summary

Problems solved by technology

[0002] With the continuous improvement of our income and living standards, cars have entered the homes of ordinary people and have become an indispensable means of transportation for our daily life. However, environmental problems have become a major problem for us. Gradually entered a part of the national automobile emission standards, the multi-layer compounding of automobile fuel multi-layer pipes has solved this problem very well, but at present, the inner layer of multi-layer fuel pipes is mostly toughened PA6, and PA6 is toughened to the current use The effect needs to add a considerable proportion of tougheners and plasticizers. Most of the additives are small molecular compounds, which will slowly dissolve when soaked in gasoline, and enter the combustion chamber of the engine with the fuel. These small molecules cannot burn like gasoline, but After carbonization, hard-to-remove carbon deposits are formed in the engine combustion chamber, which affects the performance and life of the engine

Images