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Ionic liquid modified graphene oxide/natural rubber vulcanized rubber and preparation method thereof

An ionic liquid and natural rubber technology, applied in the field of graphene oxide/natural rubber vulcanizate and its preparation, can solve the problems of complex preparation process, increase of reduction steps, increase in cost, etc., and achieves simple process, simple method, and improved thermal conductivity. The effect of coefficients

Inactive Publication Date: 2015-01-21
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But similarly, because the preparation process is too complicated, the step of reduction is also increased, and the cost is increased.

Method used

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  • Ionic liquid modified graphene oxide/natural rubber vulcanized rubber and preparation method thereof
  • Ionic liquid modified graphene oxide/natural rubber vulcanized rubber and preparation method thereof

Examples

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preparation example Construction

[0018] A kind of preparation method containing ionic liquid modified graphene oxide / natural rubber vulcanizate, specifically comprises the following steps:

[0019] Step 1: Preparation of graphite oxide: Measure 100-150mL of concentrated sulfuric acid in a four-neck flask, place it in an ice bath, and lower it to 0-4°C. Add 5-10g of graphite and 2-5g of sodium nitrate in sequence, and stir for 15-30min. Then slowly add 10-20g KMn0 4 , keep the temperature below 20°C. Then the temperature was raised to 35-40°C and kept for 2-4h. After the reaction is completed, slowly add 200-400mL of deionized water. During this process, keep the solution temperature below 100°C for 15-30min. Transfer the reaction liquid to a beaker, add 700-1000mL deionized water to dilute. Then add 700-1000mL of 5% hydrogen peroxide solution, filter with suction, wash with 5% hydrochloric acid and deionized water respectively, and then dry in a vacuum oven at a temperature of 60-80°C for later use;

[0...

Embodiment 1

[0026] Preparation of modified graphene oxide / natural rubber compounds. Measure 100-150mL of concentrated sulfuric acid in a four-necked flask, and cool it to 0-4°C in an ice bath. Add 5-10g of graphite and 2-5g of sodium nitrate in sequence, and stir for 15-30min. Then slowly add 10-20g KMn0 4, keep the temperature below 20°C. Then the temperature was raised to 35-40°C and kept for 2-4h. After the reaction is completed, slowly add 200-400mL of deionized water. During this process, keep the solution temperature below 100°C for 15-30min. Transfer the reaction liquid to a beaker, add 700-1000mL deionized water to dilute. Then add 700-1000mL of 5% hydrogen peroxide solution and then filter with suction, wash with 5% hydrochloric acid and deionized water respectively, and then dry in a vacuum oven at a temperature of 60-80°C for subsequent use; the prepared graphite oxide Grind it into powder in an agate mortar, weigh a certain amount of graphite oxide powder in the mortar, a...

Embodiment 2

[0028] Repeat the method of Example 1 according to the specified content of each component, but adopt 1 part of modified graphene oxide in the formula, the tensile strength of the obtained vulcanizate is 22.40MPa, the elongation at break is 444%, and the tear strength is 48.32 N / mm, thermal oxygen aging coefficient 79%, thermal conductivity 0.4800 W / (mK).

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Abstract

The invention relates to ionic liquid modified natural rubber vulcanized rubber containing graphene oxide. Graphene oxide is modified by use of ionic liquid through a solid grinding method, the modified graphene oxide and natural rubber are mechanically mixed in an open mill or internal mixer, and the formulas such as zinc oxide, stearic acid, an anti-aging agent, an accelerant, a vulcanizing agent, carbon black and the like are added at the same time to obtain natural rubber compound containing ionic liquid modified graphene oxide; and the ionic liquid modified graphene oxide / natural rubber vulcanized rubber provided by the invention can be obtained through vulcanization processing. According to the invention, modified graphene oxide is prepared by use of ionic liquid through the solid grinding method. Under the synergistic effect of the ionic liquid modified graphene oxide and carbon black, the heat conduction coefficient and the mechanical performance of the vulcanized rubber can be improved at the same time. The invention provides a preparation method of novel modified graphene oxide / natural rubber vulcanized rubber with simple technology and excellent performance.

Description

technical field [0001] The invention relates to an ionic liquid-modified graphene oxide / natural rubber vulcanizate and a preparation method thereof, belonging to the technical field of preparation of rubber polymer composite materials. Background technique [0002] The surface of graphene oxide contains oxygen-containing functional groups such as hydroxyl, carboxyl and epoxy groups. Compared with graphene, it is only sp 2 The hybrid structure is destroyed, so it still has mechanical properties and thermal conductivity similar to graphene (the Young's modulus and ultimate strength of graphene are as high as 1TPa and 130GPa, and the electrical conductivity is as high as 10 6 S / m, thermal conductivity up to 5000W / mK). Its preparation process is simple. It is obtained by oxidizing flake graphite with a strong oxidant, introducing polar groups on the surface of the graphite sheet, and stretching the graphite sheet. It is easy to prepare, low in price, and easy to obtain raw mate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L7/00C08K13/06C08K9/04C08K9/02C08K3/04C08K3/22C08K5/09C08K3/06
Inventor 贾红兵王经逸章西贝熊晓刚许金楼武涛张勋汤颖颖张佳佳何俊宽徐子钦张旭敏刘鹏章李峰
Owner NANJING UNIV OF SCI & TECH
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