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Hydrogenated nitrile rubber reinforcing agent as well as preparation method and application thereof

A hydrogenated nitrile rubber and reinforcing agent technology, which is applied in the direction of rolling resistance optimization, road transportation emission reduction, etc., can solve the problems of poor reinforcement effect and poor dispersion, and achieve good reinforcement, easy control, and excellent dispersion effect Effect

Active Publication Date: 2022-07-08
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is: to provide a hydrogenated nitrile rubber reinforcing agent and its preparation method and application in view of the problems of poor dispersion and poor reinforcing effect when the silica material in the prior art is used as a hydrogenated nitrile rubber reinforcing agent , the hydrogenated nitrile rubber reinforcing agent is modified nano-silica particles, which has excellent dispersion performance and good reinforcing effect

Method used

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  • Hydrogenated nitrile rubber reinforcing agent as well as preparation method and application thereof
  • Hydrogenated nitrile rubber reinforcing agent as well as preparation method and application thereof
  • Hydrogenated nitrile rubber reinforcing agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Preparation of hydrogenated nitrile rubber reinforcing agent

[0042] (1) Weigh 25g of liquid-phase nano-silicon dioxide particle powder in a three-necked bottle, add 82.48ml of commercially available 0.5mol / L sodium carbonate aqueous solution, and sonicate at room temperature for 2.5 hours to fully disperse nano-silica particles in sodium carbonate aqueous solution;

[0043](2) under the action of mechanical stirring, in the there-necked flask in the step (1), dropwise add the 0.5mol / L hexahydrate zinc nitrate solution of 82.48ml and the 0.25mol / L nonahydrate aluminum nitrate solution of 82.48ml, the solution drips The acceleration is 1 to 3 drops / second, and the mixture is fully stirred to obtain a mixed solution;

[0044] (3) under mechanical stirring, use commercially available 2mol / L aqueous sodium hydroxide solution to adjust the pH=9.0 of the mixed solution in step (2) dropwise, and maintain for 2 hours to obtain hydrotalcite-silica slurry;

[0045] (4) after...

Embodiment 2

[0052] Preparation of hydrogenated nitrile rubber reinforcing agent

[0053] (1) Weigh 25g of liquid-phase nano-silicon dioxide particle powder in a three-necked bottle, add 61.86ml of commercially available 0.5mol / L sodium carbonate aqueous solution, and ultrasonicate at room temperature for 2 hours to fully disperse nano-silica particles in sodium carbonate aqueous solution;

[0054] (2) under the action of mechanical stirring, in the there-necked flask in the step (1), drip the 0.3mol / L hexahydrate zinc nitrate solution of 103.1ml and the 0.5mol / L nonahydrate aluminum nitrate solution of 30.93ml, the solution drips The acceleration is 1 to 3 drops / second, and the mixture is fully stirred to obtain a mixed solution;

[0055] (3) under mechanical stirring, use commercially available 2mol / L aqueous sodium hydroxide solution to adjust the pH=9.5 of the mixed solution in step (2) dropwise, and maintain for 2.5 hours to obtain hydrotalcite-silica slurry;

[0056] (4) after th...

Embodiment 3

[0061] Preparation of hydrogenated nitrile rubber reinforcing agent

[0062] (1) Weigh 25g of liquid-phase nano-silicon dioxide particle powder in a three-necked bottle, add 41.24ml of commercially available 0.5mol / L sodium carbonate aqueous solution, and ultrasonicate at room temperature for 3 hours to make the nano-silica particles fully Disperse in sodium carbonate aqueous solution;

[0063] (2) under the action of mechanical stirring, in the there-necked flask in the step (1), drip the hexahydrate zinc nitrate solution of 0.5mol / L of 41.24ml and the nonahydrate aluminum nitrate solution of 0.6mol / L of 17.18ml, the solution drips The acceleration is 1 to 3 drops / second, and the mixture is fully stirred to obtain a mixed solution;

[0064] (3) under the action of mechanical stirring, use commercially available 2mol / L sodium hydroxide solution dropwise to adjust the pH=8.5 of the mixed solution in step (2), and maintain for 2 hours to obtain hydrotalcite-silica slurry;

...

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Abstract

According to the hydrogenated butadiene-acrylonitrile rubber reinforcing agent disclosed by the invention, the hydrogenated butadiene-acrylonitrile rubber reinforcing agent is a compound of flaky hydrotalcite and nano silicon dioxide particles, the nano silicon dioxide particles are taken as a carrier, and the flaky hydrotalcite grows on the surfaces of the nano silicon dioxide particles; in the compound, the weight ratio of the flaky hydrotalcite to the nano silicon dioxide particles is (0.2-1): 1. The hydrogenated butadiene-acrylonitrile rubber reinforcing agent disclosed by the invention is a compound of flaky hydrotalcite and nano silicon dioxide particles, the nano silicon dioxide particles are used as a carrier, and the flaky hydrotalcite grows on the surfaces of the nano silicon dioxide particles; the modified nano silicon dioxide particles as a reinforcing agent of hydrogenated nitrile butadiene rubber have good reinforcing property and excellent dispersity in hydrogenated nitrile butadiene rubber, and the flaky hydrotalcite can generate orientation behavior when the rubber is subjected to tensile force, so that the stress transfer rate is increased, and the reinforcing agent is more efficient.

Description

technical field [0001] The invention relates to the technical field of hydrogenated nitrile butadiene rubber reinforcing agent, in particular to a hydrogenated nitrile butadiene rubber reinforcing agent and a preparation method and application thereof. Background technique [0002] As a highly saturated synthetic rubber, hydrogenated nitrile rubber has been widely used in aviation, oil field and sealing fields. In the preparation process of hydrogenated nitrile rubber, it is necessary to add a reinforcing agent to improve the mechanical properties of the rubber product. [0003] The commonly used reinforcing agent for hydrogenated nitrile rubber is mainly carbon black, but the disadvantages of low reinforcing efficiency, low reinforcing effect and poor environmental protection appear during the use of carbon black as a reinforcing agent. Silica has the characteristics of no environmental pollution, low price and excellent reinforcing properties, and is considered to be a ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L15/00C08K9/12C08K7/00C08K3/26C08K3/36
CPCC08K9/12C08K7/00C08K3/26C08K3/36C08K2201/011C08L2201/08C08L15/005Y02T10/86
Inventor 王亚男索军营魏莉侯平安唐帅
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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