Amino compound rubber additive as well as preparation and application thereof

Abstract

The invention relates to an amino compound rubber additive as well as preparation and application thereof. The chemical structural formula of the additive is shown in the description, wherein n is anoxidation state of a metal element M; n=2, 3 or 4; A is one of oxygen, sulfur, carbon, nitrogen, phosphorus or silicon; x is more than or equal to 0 and less than or equal to 10; B is one of oxygen, sulfur, carbon, nitrogen, phosphorus or silicon; y is more than or equal to 0 and less than or equal to 10; (AxBy)m indicates that atoms are connected by chemical bonds; x and y are not 0 at the same time; m is more than or equal to 0 and less than or equal to 10; z is less than or equal to 50; R1 and R2 are fatty chains, alicyclic hydrocarbons or aromatic compounds with 0 to 50 carbon atoms; R3, R4, R6 and R8 are saturated or unsaturated fatty chains or alicyclic hydrocarbons with 0 to 50 carbon atoms; R5 and R7 are aromatic ring compounds; a and b are positive integers. The prepared additivecan be applied to rubber, and improves the hardness, wet skid resistance, dynamic-mechanical properties and tensile property of the rubber; a part of rubber compositions containing the additive have higher Shore hardness, elongation at break, wet skid resistance and dynamic elastic modulus.

Description

technical field [0001] The invention relates to the field of amino compound rubber additives, in particular to an amino compound rubber additive and its preparation and application. Background technique [0002] It is desirable in the tire industry to increase the modulus of compounds used in base tread compositions and tire wire cover compounds. In order to increase the modulus of the above rubber compounds, it is common practice to add a large amount of reinforcing fillers, such as carbon black and silica, to these rubber compounds, or to increase the degree of vulcanization of these rubber compounds. However, the results produced by these two techniques are not ideal. For example, the addition of large amounts of carbon black to rubber compositions generally results in a high degree of hysteresis loss, and thus the use of such compounds in tires results in excessive heat build-up and poor tear resistance. As another example, adding a large amount of sulfur to a rubber c...

AI Technical Summary

Problems solved by technology

However, the results of these two techniques are not ideal

For example, the addition of large amounts of carbon black to rubber compositions generally results in a high degree of hysteresis loss, so the use of such compounds in tires can result in excessive heat build-up and poor tear resistance

As another example, adding a large amount of sulfur to a rubber composition generally results in poor aging resistance of the formulation, and moreover, simply increasing the degree of vulcanization to achieve high modulus is often very impractical

Images