Composite oil-conveying pipe with anti-spalling property

Abstract

The invention discloses a composite oil-conveying pipe with an anti-spalling property. The composite oil-conveying pipe is characterized by comprising the following raw materials in parts by weight: 80-90 parts of butadiene-acrylonitrile rubber, 0.3-0.6 part of 4-dimethylaminopyridine, 430-500 parts of high-density polyethylene, 3-4 parts of castor oil, 110-140 parts of dimethyl formamide, 36-40 parts of calcium carbonate, 46-50 parts of n-methylpyrrolidone, 10-14 parts of ethidene diamine, 1-2 parts of dicyclohexylcarbodiimide, 7-10 parts of dioctyl sebacate, 2-3 parts of polyacrylamide, 0.1-0.14 part of distearoyl isopropoxy aluminate and 0.3-1 part of dithiocyano-methane. According to the composite oil-conveying pipe with the anti-spalling property, provided by the invention, amino in ethidene diamine is utilized to carry out amidation reaction with calcium carbonate, so that ethidene diamine is successfully grafted onto calcium carbonate, and amino end group in amidated calcium carbonate is utilized to carry out hydrogen-bond interaction or anhydride reaction with anhydride in rubber matrix, the dispersibility and interface interaction of calcium carbonate in the matrix are improved, and at the same time, polar groups like carboxyls, hydroxide radicals and carbonyls and the like are contained in matrix anhydride molecular chains, the polar groups and calcium carbonate particles can form interactive hydrogen bonds or coordinate bonds, which can improve the interface adhesion effect, and further improve the mechanical strength and heat stability of the finished substrate.

Description

technical field [0001] The invention mainly relates to a pipe material, in particular to an anti-explosion composite oil delivery pipe. Background technique [0002] Polyethylene is an inexpensive, versatile, and easy-to-form thermoplastic. However, polyethylene's mechanical properties, lack of thermal stability and non-polarity limit its application in some fields, and polyethylene can be compounded with some fillers to improve its mechanical properties and heat resistance, etc., but because of its It is easy to agglomerate and has low binding force with the polymer interface, and poor dispersion uniformity. It is necessary to increase the amount of addition to obtain a composite material with better performance; therefore, in order to improve the interfacial binding force between the filler and the polymer matrix and improve the dispersion of the filler, how to use The effective combination of filler and polyethylene has become the focus of research. Contents of the...

AI Technical Summary

Problems solved by technology

However, polyethylene's mechanical properties, lack of thermal stability and non-polarity limit its application in some fields, and polyethylene can be compounded with some fillers to improve its mechanical properties and heat resistance, etc., but because of its It is easy to agglomerate and has low binding force with the polymer interface, and poor dispersion uniformity. It is necessary to increase the amount of addition to obtain a composite material with better performance; therefore, in order to improve the interfacial binding force between the filler and the polymer matrix and improve the dispersion of the filler, how to use The effective combination of fillers and polyethylene has become the focus of research