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Anti-aging agent composition, anti-aging agent masterbatch and rubber composition

A technology of anti-aging agent composition and rubber composition, which is applied in the fields of anti-aging agent masterbatch and rubber composition, anti-aging agent composition, and can solve problems such as affecting health, powder staying for a long time, unfavorable tire lamination and molding, etc.

Active Publication Date: 2021-02-02
JIANGSU SINORGCHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the mainstream amine anti-aging agents have serious discoloration problems, resulting in tire appearance defects. Tires with high appearance requirements will use phenolic antioxidants or saturated rubber, which can reduce the amount of anti-aging agents and reduce discoloration.
Among them, the anti-aging effect of phenolic antioxidants is not as good as that of amine antioxidants, and their anti-hot oxygen, anti-ozone and anti-fatigue performances are much lower.
In addition, the use of saturated rubber such as EPDM can reduce or eliminate the anti-aging agent to improve the appearance, but due to the high price of this type of rubber, the cost increases, and the viscosity of this type of rubber is poor, which is not conducive to tire lamination and molding
No matter whether amine or phenolic antioxidants are used alone, they cannot fully meet the performance retention requirements of various aging tires during processing and use.
[0006] In addition, the current rubber mixing process basically directly adds granular or powdery anti-aging agent products, and the granular additives collide with each other or collide with the container during the flow process to cause fragmentation, resulting in more powder , the powder is easy to fly in the air and stay for a long time, it is easy to be inhaled by the workers and affect their health
In addition, in the actual production process, after the granular additives are put into the mixing device, they must be squeezed, crushed and melted before they can be fully mixed with the rubber. The process is long and the dispersion effect is poor.

Method used

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  • Anti-aging agent composition, anti-aging agent masterbatch and rubber composition
  • Anti-aging agent composition, anti-aging agent masterbatch and rubber composition
  • Anti-aging agent composition, anti-aging agent masterbatch and rubber composition

Examples

Experimental program
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Effect test

Embodiment 1

[0087] Embodiment 1: the preparation of antioxidant masterbatch

[0088] Formulation: The formulations of anti-aging agent masterbatches M1-M12 are shown in Table 1.

[0089] Preparation process: initial temperature 60°C, speed 70rpm, add rubber (EDPM\SBR\IR) pressure plug, add EVA pressure plug after 60 seconds, add stearic acid and 1 / 2 naphthenic oil after 30 seconds and press the plug , after mixing evenly, add anti-aging agent (TMPPD\N3100-B\N3100-C) and the remaining 1 / 2 naphthenic oil pressure plug, mix evenly, discharge the glue and use an open mill to take out the tablet to obtain the anti-aging agent masterbatch M1- M12.

[0090] Table 1: Formula of antioxidant masterbatch (unit: parts by mass)

[0091]

[0092]

Embodiment 2

[0093] Embodiment 2: the preparation of tire compound

[0094] Formula: the formula of tire compound 1-11 is shown in Table 2.

[0095] making process:

[0096] 1. Add natural rubber SCR5, synthetic rubber BR, carbon black N550, ZnO, SA, aromatic oil and anti-aging agent to the internal mixer, and knead the whole mixture until the maximum temperature between 110°C and 190°C is reached;

[0097] 2. Cool the whole mixture to a temperature below 100°C, then add accelerator NS and crosslinker S, knead and integrate the mixture until the maximum temperature below 110°C;

[0098] 3. The resulting composition is calendered into a sheet shape (thickness is about 2mm), to obtain unvulcanized rubber sheets, to measure their vulcanization characteristics t10 and t90;

[0099] 4. Vulcanized at 145°C for 30 minutes to obtain a vulcanized film to measure its mechanical properties, ozone aging resistance, weather aging resistance and dynamic fatigue aging resistance.

[0100] Table 2: Tire ...

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Abstract

The invention provides an anti-aging agent composition, an anti-aging agent masterbatch containing the anti-aging agent composition, and a rubber composition containing the anti-aging agent composition or the anti-aging agent masterbatch. The anti-aging agent composition contains an anti-aging agent TMPPD and one or two selected from the group consisting of an anti-aging agent N3100-B and an anti-aging agent N3100-C. According to the anti-aging agent composition and the anti-aging agent masterbatch disclosed by the invention, the rubber composition and a rubber product can have excellent anti-discoloration performance, excellent fatigue resistance, excellent ozone resistance and excellent mechanical properties before aging and after thermo-oxidative aging at the same time, so that the rubber composition and the rubber product can be used for manufacturing all or part of rubber matrixes of tires, and particularly, the rubber composition is used as a tire sidewall rubber composition anda tread rubber composition.

Description

technical field [0001] The invention belongs to the technical field of rubber antiaging agents, and in particular relates to an antiaging agent composition, an antiaging agent masterbatch and a rubber composition. Background technique [0002] Tires are an essential part of modern cars, which play the role of carrying the weight of the car and transmitting traction and braking forces. Generally speaking, tires are exposed to the outside of the car and are visible parts; at the same time, tires may also undergo color changes due to aging effects such as light, high temperature, and chemical corrosion. Therefore, the tire color has a more obvious impact on the overall appearance of the car. [0003] In addition, due to the continuous rotation of the tire during driving, the rubber on the tire will also be periodically compressed and stretched, causing fatigue and aging, and causing the performance of the tire to decline or fail. [0004] For this reason, chemical or physical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/3492C08K5/18C08L23/16C08L9/06C08L9/00C08L23/08C08J3/22C08L7/00B60C1/00
CPCC08K5/34922C08K5/18C08J3/226C08L7/00C08L9/00B60C1/0016B60C1/0025C08J2423/16C08J2423/08C08J2409/06C08J2409/00C08L2201/08C08L2205/035C08L23/16C08L23/0853C08K13/02C08L9/06C08L91/00C08J2307/00C08K5/09C08K5/01C08L2310/00B60C1/00B60C2001/0066C08K5/3492C08K5/17C08J3/22C08J2309/06C08J2323/16
Inventor 高杨李辉王浩
Owner JIANGSU SINORGCHEM TECH CO LTD
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