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Fluorosilicone isoprene rubber and preparation method thereof as well as wide-temperature range high-strength aviation tire rubber material and preparation method thereof

A technology of silicon isoprene rubber and rubber material, which is applied in the field of rubber composite materials, can solve the problems of high instantaneous load, high internal pressure of inflation, large heat generation, etc., and achieves the effect of broadening the application range, improving performance, and reducing heat generation.

Active Publication Date: 2018-08-24
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high-speed take-off and landing of aviation tires with high instantaneous load, high heat generation, fast speed, large sinking, large deformation and high inflation internal pressure, the traditional wide temperature range fluorosilicone rubber can be used under extreme conditions (such as ultra- High temperature) The mechanical properties are poor, which cannot meet the requirements of high-performance aviation radial tire tread rubber and sidewall rubber

Method used

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  • Fluorosilicone isoprene rubber and preparation method thereof as well as wide-temperature range high-strength aviation tire rubber material and preparation method thereof
  • Fluorosilicone isoprene rubber and preparation method thereof as well as wide-temperature range high-strength aviation tire rubber material and preparation method thereof
  • Fluorosilicone isoprene rubber and preparation method thereof as well as wide-temperature range high-strength aviation tire rubber material and preparation method thereof

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preparation example Construction

[0055] The present invention also provides a preparation method of fluorosilicone isoprene rubber, comprising the following steps:

[0056] 1) Under the action of a metal catalyst, after reacting isoprene, an organoaluminum compound, an organoboron salt and a good solvent, a reaction system is obtained;

[0057] 2) Add fluorine-containing siloxane to the reaction system obtained in the above steps, continue the reaction, stop the reaction, and perform post-treatment to obtain fluorosilicone isoprene rubber.

[0058] In the present invention, the selection, composition and structure of the materials in the above preparation method, as well as the corresponding optimization principles, can preferably correspond to the selection, composition and structure of the materials in the aforementioned fluorosilicone isoprene rubber, and the corresponding optimization principles. No more details here.

[0059] In the invention, firstly, under the action of a metal catalyst, a reaction sy...

Embodiment 1

[0109] (1) prepare fluorosilicone isoprene rubber;

[0110] Add 25μmol rare earth metal catalyst, 10ml toluene, 50μmol AlMe 3 , 5mmol isoprene, 25μmol[Ph 3 C][B(C 6 f 5 ) 4 ], after reacting at 0°C for 24h under constant stirring, add 5mmol trifluoropropylmethylcyclotrisiloxane, continue to react for 24h, add 30mL containing 5% 2,6-di-tert-butyl-4-methylphenol ethanol to stop the reaction; the reaction solution was precipitated with ethanol to precipitate solid matter, and the solid matter was vacuum-dried at 40° C., and the solvent was removed to constant weight to obtain 2.68 g of fluorosilicone isoprene rubber with a conversion rate of 100%. .

[0111] (2) Mixing and vulcanization

[0112] In 150g of fluorosilicone isoprene rubber prepared in step (1), 1.5g of graphene oxide, 1.5g of stearic acid, 1.5g of zinc oxide, 1.5g of heat stabilizer, 1.5g of anti-aging agent, 0.75g of accelerator, Sulfur 1.5g, pressurized at 10MPa, kneaded at 80°C, added each component separa...

Embodiment 2

[0118] (1) prepare fluorosilicone isoprene rubber;

[0119] Add 30μmol rare earth metal catalyst, 15ml toluene, 90μmol AlMe 3 , 10mmol isoprene, 50μmol[Ph 3 C][B(C 6 f 5 ) 4 ], after reacting at 25°C for 48h under constant stirring, add 2mmol trifluoropropylmethylcyclotrisiloxane, continue to react for 48h, add 35mL containing 5% 2,6-di-tert-butyl-4-methylphenol ethanol to stop the reaction; the reaction solution was precipitated with ethanol to precipitate solid matter, and the solid matter was vacuum-dried at 50° C., and the solvent was removed to constant weight to obtain 1.62 g of fluorosilicone isoprene rubber with a conversion rate of 100%. .

[0120] (2) Mixing and vulcanization

[0121] In the fluorosilicone isoprene rubber 100g described in step (1), add graphene oxide 2g, stearic acid 2g, zinc oxide 1g, heat stabilizer 1g, anti-aging agent 1.5g, accelerator 2g, sulfur 2g successively, add Press 13MPa, knead at 100°C, add each component separately, mix for 10 m...

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Abstract

The invention provides fluorosilicone isoprene rubber which is obtained by copolymerizing an isoprene monomer and a fluorinated siloxane monomer. The fluorosilicone isoprene rubber provided by the invention has the benefits that in a manner of block copolymerization, the appropriate isoprene monomer is regulated and controlled for block copolymerization on cis-1,4-configuration and a fluorosilicone polymer; a chain segment structure, the length, the polydispersity and the like are better regulated and controlled to realize controllable synthesis, so that the fluorosilicone polymer and polyolefin are mutually modified; and the aging resistance, the high and low temperature resistance and other excellent characteristics of fluorosilicone rubber are organically combined with the high elasticity, the high tensile strength and other characteristics of isoprene rubber, so that the properties of a novel material are improved, and the application range of the novel material is widened. The fluorosilicone isoprene rubber provided by the invention is used in a rubber composition to obtain the novel wide-temperature range high-strength aviation tire rubber material with excellent comprehensive performance, thereby better adapting to extreme conditions.

Description

technical field [0001] The invention belongs to the technical field of rubber composite materials, and relates to a fluorosilicone isoprene rubber and a preparation method thereof, a rubber material and a preparation method thereof, in particular to a fluorosilicone isoprene rubber and a preparation method thereof, and a wide temperature range high-strength aviation tire Rubber material and method for its preparation. Background technique [0002] Fluorosilicone rubber (FMVQ), the main chain is composed of silicon and oxygen atoms, with a silicon-oxygen bond as the main chain structure, and a linear polymer with fluoroalkyl or fluoroaryl groups introduced into the side chain connected to silicon, with a molecular weight of 50-80 Among them, poly(3,3,3-trifluoropropylmethyl) silicone rubber is mass-produced and widely used. [0003] Silicone polymers usually have excellent properties such as high and low temperature resistance (-60 ° C ~ -310 ° C), aging resistance, radiatio...

Claims

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Application Information

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IPC IPC(8): C08F297/06C08L9/00C08K13/02C08K3/22C08K3/04C08K5/09C08K3/06
CPCC08F297/06C08K3/06C08K3/22C08K5/09C08K13/02C08K2003/2296C08L2201/08C08K3/042C08L9/00
Inventor 白晨曦贺剑云代全权祁彦龙崔龙
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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