High temperature resistant inner layer material for heat radiator water pipe and preparation method thereof

Abstract

The present invention provides a high temperature resistant inner layer material for a heat radiator water pipe and a preparation method thereof. The high temperature resistant inner layer material can satisfy cooling liquid aging resistance under the long time action of a high temperature medium, high resistance and no zinc in the material, and can be balanced in the aspects of compression permanent deformation, extension, physical and mechanical properties, low temperature performance, resistance and the like. The high temperature resistant inner layer material includes the following variouspreparation materials: 0-80 parts by weight of ethylene-propylene copolymer, 0-150 parts by weight of ethylene-propylene diene copolymer, 50-150 parts by weight of carbon black, 20-50 parts by weightof a plasticizer, 0-20 parts by weight of precipitation method white carbon black, 0-15 parts by weight of magnesium oxide, 0-2 parts by weight of stearic acid, 1.5 to 8 parts by weight of an antioxidant, 2.5 to 10 parts by weight of crosslinking agent BIBP, 1 to 3.5 parts by weight of crosslinking agent TMPTMA and 1-8 parts by weight of other auxiliaries.

Description

Technical field [0001] The present invention mainly relates to the technical field of the inner layer material of the water pipe connected to the radiator. It mainly realizes the thermal aging resistance of the high temperature coolant and water mixture; and can provide the radiator water pipe with high temperature resistance and low temperature resistance through the assembly product , Good fatigue performance, etc., which can increase the service life of the product and reduce the risk of failure. A high temperature and long-term aging resistant material for the inner layer of the radiator water pipe and its preparation method. Background technique [0002] With the popularization of turbine engines, the mixture of coolant and water in radiator pipes can often reach a boiling point. The traditional water pipe inner material cannot withstand the attack of the mixture of coolant and water for a long time as high as 120-150℃. , Damage, can not withstand aging; this is because 120-...

AI Technical Summary

Problems solved by technology

[0002] With the popularity of turbine engines, the mixture of coolant and water in radiator water pipes often reaches the boiling point, and the traditional inner layer of water pipes cannot withstand the attack of a mixture of coolant and water at temperatures as high as 120-150°C for a long time , damage, and cannot withstand aging; this is because 120-150°C is the boiling point temperature of the two mixed liquids (currently, the boiling point temperature of high-end coolants is getting higher and higher), at this temperature, it is equivalent to steam vulcanization, while traditional water The EPDM side chain of the inner material of the tube contains ENB groups, which have active chemical bonds. After a long time of action, the crosslinking density will increase continuously; while it is characterized on the material, the hardness changes greatly, and the material has a risk of failure.

In addition, there are many wires and pipes around the radiator, and the current engine basically realizes electronic ignition, so static electricity is easy to occur around the radiator water pipe. If the inner layer material contacts a certain medium, electrochemical corrosion will occur, which will speed up the production process. fail

In addition, the zinc oxide part of the inner layer material may react to form zinc ions, which will cause corrosion failure risk to radiator products

Moreover, the existing inner layer materials are difficult to achieve a balance in terms of compression set, constant elongation, physical and mechanical properties, low temperature performance, electrical resistance and other properties; in addition, it is necessary to take into account the adhesion between the inner layer material and the outer layer material and Due to factors such as the mutual influence of performance, it is also necessary to develop a more ideal inner layer material for radiator water pipes that is resistant to high temperature and aging.

Images