A kind of intercalated hydrotalcite anti-ultraviolet aging agent for rubber and its preparation method and using method

A technology of anti-ultraviolet aging agent and hydrotalcite, which is applied in the field of inorganic functional materials, can solve the problems of shortened life, economic loss, environmental pollution, etc., and achieve the effects of reducing hysteresis loss and heat generation, improving reinforcement effect, and improving interaction

Active Publication Date: 2019-08-13
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This accelerates the aging of these rubber products, resulting in reduced performance and shortened life, resulting in huge economic losses and environmental pollution.

Method used

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  • A kind of intercalated hydrotalcite anti-ultraviolet aging agent for rubber and its preparation method and using method
  • A kind of intercalated hydrotalcite anti-ultraviolet aging agent for rubber and its preparation method and using method
  • A kind of intercalated hydrotalcite anti-ultraviolet aging agent for rubber and its preparation method and using method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step A: 30.77g (0.12mol) of solid Mg(NO 3 ) 2 ·6H 2 O and 22.51g (0.06mol) of solid Al(NO 3 ) 3 9H 2 O, dissolved in deionized water, prepared into 150mL mixed salt solution; weighed 14.4g of NaOH and 10.15g (0.06mol) 3-maleimido propionic acid, dissolved in deionized water, prepared into 150mL base solution; at room temperature, the two solutions were added to a rotating membrane reactor at the same flow rate for rapid nucleation, and sodium dodecylsulfonate was added to the slurry at a mass fraction of 5%. The resulting slurry was transferred to a 500mL flask, crystallized at 80°C for 8 hours, centrifuged and washed to a pH of about 7, and dried at 60°C for 12 hours to obtain 3-maleimido propionate intercalated magnesium aluminum hydrotalcite, which The structural formula is Mg 0.64 Al 0.36 (OH) 2 (A - ) 0.36 0.8H 2 O,A - For 3-maleimido propionate.

[0023] Step B: Prepare 2 mL of a mixed solution of ethanol and water with a mass ratio of 95:5, adjust th...

Embodiment 2

[0026] Step A: 28.34g (0.12mol) of solid Ca(NO 3 ) 2 4H 2 O and 22.51g (0.06mol) of solid Al(NO 3 ) 3 9H 2 O, soluble in removing CO 2 150mL of mixed salt solution was prepared in deionized water; 14.4g of NaOH and 9.55g (0.03mol) of phenolphthalein were weighed and dissolved in 2 Prepare 150 mL of alkali solution in deionized water; add the two solutions into a rotating membrane reactor at the same flow rate at room temperature to quickly nucleate, transfer the obtained slurry to a 500 mL flask, crystallize at 90 ° C for 8 hours, and centrifuge to wash until The pH is about 7, and dried at 60°C for 12 hours to obtain a phenolphthalein quinone-type anion-intercalated calcium-aluminum hydrotalcite precursor, whose structural formula is Ca 0.66 al 0.34 (OH) 2 (A 2- ) 0.18 ·H 2 O;A 2- For the phenolphthalein anion.

[0027] Step B: Weigh 2.0g CaAl-PPN-LDHs sample, dissolve it in 200ml deionized water, disperse the sample evenly with a magnetic stirrer, then measure 1...

Embodiment 3

[0030] Step A: 35.70g (0.12mol) of solid Zn(NO 3 ) 2 ·6H 2 O and 15.00g (0.04mol) of solid Al(NO 3 ) 3 9H 2 O, soluble in removing CO 2 150 mL of mixed salt solution was prepared in deionized water; 12.8 g of NaOH and 26.06 g (0.12 mol) of 4-maleimidobenzoic acid were weighed and dissolved in CO 2 Prepare 150mL of alkali solution in deionized water; add the two solutions into the rotating membrane reactor at the same flow rate at room temperature to quickly nucleate, and add sodium dodecylsulfonate to the slurry at a mass fraction of 10%. Transfer the obtained slurry to a 500mL flask, crystallize at 90°C for 8 hours, centrifuge and wash until the pH is about 7, and dry at 60°C for 12 hours to obtain the precursor of nitrate-intercalated zinc-aluminum hydrotalcite, whose structural formula is Zn 0.75 al 0.25 (OH) 2 (A - ) 0.25 0.9H 2 O,A - For 4-maleimidobenzoic acid ion.

[0031] Step B: Prepare 5mL of a mixed solution of ethanol and water with a mass ratio of 90:...

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Abstract

The invention discloses an intercalated hydrotalcite anti-ultraviolet aging agent for rubber as well as a preparation method and a usage method thereof, and belongs to the technical field of inorganic functional materials. According to intercalated hydrotalcite provided by the invention, a cross-linking agent is introduced into an interlayer of hydrotalcite by utilizing the characteristic that a guest molecule of the interlayer can be exchanged, and is enabled to generate a chain reaction with a molecular chain of the rubber to produce a cross bond; the anti-ultraviolet aging performance of vulcanized rubber is enhanced; the hydrotalcite which is small and further uniform in particle size and is spherical in morphology is obtained through a template agent, and owns a larger specific surface area; the ultraviolet shielding effect of the hydrotalcite is enhanced. The intercalated hydrotalcite can be also modified by using a modifying agent and etched; the interfacial action between the hydrotalcite and the rubber is ameliorated; the dispersity and the uniformity in the rubber are promoted and the physical and mechanical properties of the rubber are improved; the hysteresis loss and the heat generation under dynamic deformation are decreased.

Description

technical field [0001] The invention belongs to the technical field of inorganic functional materials, and particularly relates to an intercalated hydrotalcite anti-ultraviolet aging agent for rubber, which can significantly improve the anti-ultraviolet aging performance of rubber products, and also relates to its preparation method and use method. [0002] technical background [0003] Rubber products are used in all aspects of people's lives, and they play an important role in people's lives, providing convenience for human production and life. Environmental pollution continues to destroy the ozone layer, greatly increasing the intensity of ultraviolet rays. Many rubber products such as tires are exposed to sunlight for a long time. This accelerates the aging of these rubber products, resulting in reduced performance and shortened life, resulting in huge economic losses and environmental pollution. Therefore, enhancing the anti-ultraviolet aging performance of rubber mate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/06C08K9/04C08K9/02C08K3/22C08L7/00C08L9/02C08L23/22C08L11/00C08L9/00C08L9/06C08J3/24
CPCC08J3/24C08J2307/00C08J2309/00C08J2309/06C08J2311/00C08J2323/22C08J2409/02C08K3/22C08K9/02C08K9/04C08K9/06C08K2201/003C08L7/00C08L9/02C08L9/06C08L23/22C08L9/00
Inventor 林彦军吴勤李凯涛
Owner BEIJING UNIV OF CHEM TECH
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