Rare-earth complex rubber anti-aging agent, and preparation method and application thereof

A rare earth complex, rubber antioxidant technology, applied in the preparation of sulfonic acid, organic chemistry and other directions, to achieve the effect of being suitable for popularization and application, and the synthesis method is simple and feasible

Inactive Publication Date: 2014-08-27
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at how to improve the anti-aging efficiency of the existing rubber anti-aging agent, how to realize the various functions of the anti-aging agent, how to reduce the migration and volatilization of the existing anti-aging agent, etc., and provides a rare earth complex rubber anti-aging agent and its preparation Method and Application

Method used

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  • Rare-earth complex rubber anti-aging agent, and preparation method and application thereof
  • Rare-earth complex rubber anti-aging agent, and preparation method and application thereof
  • Rare-earth complex rubber anti-aging agent, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Dissolve 200 grams of sodium p-aminobenzenesulfonate in 300ml of water, stir in a water bath at 80°C for 0.5h, then add 260g of lanthanum chloride solution whose molar number is equivalent to 50% of the molar number of sodium p-aminobenzenesulfonate, and continue at 80 Stir at ℃ for 8h, filter, wash and dry the obtained product to obtain the target product lanthanum p-aminobenzenesulfonate.

[0023] Elemental analysis: the contents of C, H, N, and S in the product are 28.12%, 2.81%, 5.55%, and 12.52% respectively, which indicates that the chemical formula of the rare earth complex is C 12 h 12 S 2 o 8 N 2 La·2H 2 O. Infrared spectrum such as figure 1 It is shown that the characteristic peaks at 3380cm-1 and 3480cm-1 are still maintained, but the absorption intensity of each group is slightly reduced due to the strong electronegativity of the lanthanum ion. The characteristic peak position of the sulfonic acid cation in the figure, due to the action of the lanthan...

Embodiment 2

[0040] The basic formula of the styrene-butadiene rubber / white carbon black composite material prepared by compounding the rare earth complex lanthanum sulfanilate and 4010NA as the rubber antioxidant is shown in Table 5, and the mixing and vulcanization process is the same as in Example 1.

[0041] Table 5 SBR / SiO 2 Composite material formulation (unit: parts by weight)

[0042]

[0043] Table 6 shows that when 4010NA / lanthanum sulfanilate is 1.9 / 0.1 (4010NA-1) or 1.8 / 0.2 (4010NA-2), the scorch time T of the compound 10 It is longer than the compound (4010NA-0) with all 4010NA added, and the positive vulcanization time T 90It is shorter than the rubber compound with all 4010NA added, indicating that the compound use of the two antioxidants has a synergistic effect on vulcanization, which can not only increase the scorch time and improve the processing safety of the rubber compound, but also shorten the normal vulcanization time and increase the vulcanization speed. At th...

Embodiment 3

[0055] The basic formula of the prepared styrene-butadiene rubber / white carbon black composite material is shown in Table 10 by compounding the rare earth complex lanthanum sulfanilate and anti-aging agent MB as the rubber anti-aging agent:

[0056] Table 10SBR / SiO 2 Composite material formulation (unit: parts by weight)

[0057]

[0058] The mixing and vulcanization process is the same as in Example 1.

[0059] Table 11 shows the vulcanization characteristic parameters of p-SBR / lanthanum sulfanilate / MB vulcanizate. It can be seen that with the increase of the amount of lanthanum sulfanilate, the scorch time T 10 and positive vulcanization time T 90 Gradually increased, indicating that the addition of lanthanum sulfanilate can prolong the scorch time of the rubber compound, thus ensuring the processing safety of the rubber compound. At the same time, the addition of lanthanum p-aminobenzenesulfonate can reduce the minimum torque ML of the rubber compound and improve the...

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Abstract

The invention discloses a rare-earth complex rubber anti-aging agent, and a preparation method and application thereof. The preparation method of the rare-earth complex comprises the following steps: dissolving sodium sulfanilate in water to prepare a solution having a concentration of 5-60%; adding rare-earth salts of which the mole number is equivalent to 10-100% of the mole number of the sodium sulfanilate, and then performing stirring reaction at 40-95 DEG C for 2-24 hours; and filtering the obtained product, washing, and drying to obtain a powdered target product lanthanum sulfanilate. The rare-earth complex rubber anti-aging agent is applied in rubber preparation. According to the invention, the preparation method of the rare-earth complex rubber anti-aging agent is simple and easy to implement; and the rare-earth complex rubber anti-aging agent can obviously decelerate aging of rubber, can be singly used or compounded with other anti-aging agents for use, and has the advantages of causing no pollution to a rubber product, prolonging the scorching time of a rubber material, lowering the viscosity of the rubber material and the like.

Description

technical field [0001] The invention relates to a rubber anti-aging agent and its preparation and application, in particular to a rare earth complex rubber anti-aging agent and its preparation method and application. Background technique [0002] Rare earth elements have unique 4f electronic structure, large atomic magnetic moment, strong spin coupling and other characteristics, and are easy to form rare earth complexes with organic compound ligands containing O, N, S and other elements, and the coordination number can be between 6 and 12. and its crystal structure is also varied. Rare earth elements and their complexes are widely used in both traditional and high-tech fields. Rubber is an important part of polymer materials, and has special properties such as high elasticity that cannot be replaced by other materials. The application of rare earths in rubber is a hot topic in the research of polymer materials. [0003] In recent years, the application of rare earth comple...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/00C07C309/46C07C303/22C08L7/00C08L9/06
Inventor 贾志欣郑德周健陈俊贾德民
Owner SOUTH CHINA UNIV OF TECH
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