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Rubber composition with self-healing function and preparation method and application thereof

A rubber composition and self-healing technology, applied in the field of rubber, can solve the problems of inconsistent temperature range, impact of anti-aging performance, unsuitable tire self-healing materials, etc., and achieve the effect of simple method

Active Publication Date: 2019-11-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In some existing technologies for preparing self-healing tire rubber compositions, metal ions are one of the participants in the self-healing reaction of materials, but metal ions can affect the aging resistance of rubber materials. Although the prepared rubber compositions have Self-healing ability, but anti-aging performance is affected
[0008] In other existing technologies, the graphene / graphene oxide natural rubber composite masterbatch is used, and its technology also has an imperfect side. The optimal temperature range for self-healing is inconsistent with the temperature range used by tires, so it is not suitable for Self-healing material for tires

Method used

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  • Rubber composition with self-healing function and preparation method and application thereof
  • Rubber composition with self-healing function and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] This example is used to prepare and obtain the rubber composition of the present invention.

[0073] Mix 200g of BR (3.7mol butadiene unit), 10g (0.0172mol) of Si69, and 3.370g (0.034mol) of 2-furanmethanol on a double-roll mill at a temperature of 20°C to obtain a rubber compound. Take 53.09 g of the above-mentioned mixed rubber, and cut it on a Haake rheometer at 145° C. for 10 minutes to obtain a polybutadiene rubber grafted with furan groups (that is, a modified rubber). Theoretically, the molar ratio of groups in the rubber compound n(furyl) / n(butadiene structural unit)=0.0093≈0.01.

[0074] The initial temperature of the Haake rheometer is 60°C, the rotation speed is 20r / min, 25g (0.463mol butadiene unit) of BR is added, and then a total of 1.5g of graphene oxide is added in 3 times, followed by 1.99g (0.00926mol) of BR 6-maleimidocaproic acid, finally add the remaining 25g (0.463mol butadiene unit) of BR (that is, the total weight of BR is 50g), put down the top...

Embodiment 2

[0077] This example is used to prepare and obtain the rubber composition of the present invention.

[0078] Mix 200g of BR (3.7mol butadiene unit), 2g (0.00344mol) of Si69, and 0.674g (0.0068mol) of 2-furanmethanol on a double-roll mill at a temperature of 20°C to obtain a rubber compound. Take 50.15 g of the above-mentioned mixed rubber, and cut it on a Haake rheometer at 145° C. for 10 minutes to obtain a polybutadiene rubber grafted with furan groups (that is, a modified rubber). Theoretically, the molar ratio of groups in the rubber compound n(furyl) / n(butadiene structural unit)=0.0019≈0.002.

[0079] The initial temperature of the Haake rheometer is 60°C, the rotation speed is 20r / min, 25g (0.463mol butadiene unit) of BR is added, and then a total of 1.0g of graphene oxide is added in 2 times, followed by 0.40g (0.00185mol) of BR 6-maleimidocaproic acid, finally add the remaining 25g (0.463mol butadiene unit) of BR (that is, the total weight of BR is 50g), put down the t...

Embodiment 3

[0088] This example is used to prepare and obtain the rubber composition of the present invention.

[0089] Present embodiment adopts the method similar to embodiment 1 to carry out, and difference is:

[0090] In this embodiment, the 2-furan methylamine of the same molar amount is used to replace the 2-furan methanol in the embodiment 1, and the isoprene rubber of the same molar amount (calculated as the rubber structural unit in the rubber molecule) is used to replace the 2-furan methanol in the embodiment 1. BR, and the graphene oxide in embodiment 1 is replaced by graphene of the same molar amount.

[0091] All the other are the same as in Example 1.

[0092] In this example, a rubber material composition F-IR / M-GE / IR (named H3) with self-healing function was obtained.

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Abstract

The invention relates to the field of rubber, and discloses a rubber composition having a self-healing function and a preparation method and application thereof. The rubber composition comprises modified rubber and a modified filler, wherein one of the modified rubber and the modified filler contains a diene group, and the other contains a dienophile group; the contents of the modified rubber andthe modified filler are configured such that the mole ratio of the diene group to the dienophile group in the composition is (0.9-1.1):1; and the modified filler is prepared from a filler raw materialand a compound A containing the diene group or the dienophile group. The temperature range of a self-healing reaction and a reverse reaction thereof of the composition is 80-120 DEG C which is a temperature range inside the carcass during the use of a tire, so that a self-healing requirement during the use of the tire can be met well.

Description

technical field [0001] The present invention relates to the field of rubber, in particular to a rubber composition with self-healing function, a method for preparing the rubber composition with self-healing function and the rubber composition with self-healing function as a tire Applications of self-healing materials. Background technique [0002] With the gradual implementation of the EU tire labeling law and the US "double reverse" law, the domestic and foreign auto industries have increasingly stringent requirements on tire safety, energy saving and durability. [0003] In 2015, the total national tire output was 565 million, of which 515 million were radial tires (110 million all-steel tires and 405 million semi-steel tires), and 50 million bias-ply tires. If the quality of domestic tires can be improved so that they have the function of self-repair, durability and safety can be improved, a large amount of valuable rubber and other raw material resources can be saved ev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L15/00C08K9/04C08K3/04B60C1/00
CPCC08K9/04C08K3/042B60C1/00C08L15/00
Inventor 赵青松解希铭王丽丽郑方远唐功庆王丽静孙攀
Owner CHINA PETROLEUM & CHEM CORP