A kind of functional group double-capped additive and its preparation and application

Abstract

The invention relates to an additive with a functional group double-terminated structure as well as a preparation and application of the additive. The additive has a chemical structural formula as shown in the specification, wherein n is an oxidation state of metal M and is equal to 2, 3 or 4; A is one of oxygen, sulfur, carbon, nitrogen, phosphorus and silicon, and x is larger than or equal to 0and is smaller than or equal to 10; B is one of oxygen, sulfur, carbon, nitrogen, phosphorus and silicon, and y is larger than or equal to 0 and is smaller than or equal to 10; (AxBy)m shows that atoms are connected by chemical bonds, and x and y are not zero at the same time; m is larger than or equal to 0 and is smaller than or equal to 10; z is smaller than or equal to 50; R1 and R2 are aliphatic chains, alicyclic hydrocarbons or aromatic compounds of which the carbon atom numbers do not exceed 50; and F1 and F2 are organic groups with functional groups and have different structures. The additive prepared by using the preparation method can be introduced to rubber compositions so as to comprehensively improve the hardness, wet skid resistance, dynamic mechanical property and tensile property of rubber, and even, in parts of exemplary embodiments, the rubber compositions containing the additive with the functional group double-terminated structure have improved Shore hardness, elongation at break and wet skid resistance.

Description

technical field [0001] The present invention relates to the field of an additive with a tire functional group double-capped structure, in particular to an additive with a functional group double-capped structure 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-mentioned compounds, it is common practice to add a large amount of reinforcing fillers, such as carbon black and silica, to these compounds, or to increase the degree of vulcanization of these 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 anothe...

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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 large amounts 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

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