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Preparation method and application of XNBR modified graphene oxide composite filler

A graphene composite and oxide stone technology, applied in the field of composite materials, can solve problems such as poor performance improvement of XNBR, and achieve the effects of improving dimensional stability and physical properties, reducing viscosity and prolonging service life.

Pending Publication Date: 2022-06-03
深圳石墨烯创新中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For this reason, the present invention provides a kind of preparation method and application thereof of XNBR modified graphene oxide composite filler, to solve the problem that the existing modified graphene oxide reinforcing filler can not improve the performance of XNBR

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The present embodiment provides a preparation method of XNBR modified graphene oxide composite filler, comprising the following steps:

[0030] (1) Weigh 5g graphene oxide powder, disperse in 30ml of ethanol, ultrasonicate for 30min, make it fully mix to obtain graphene oxide-ethanol solution, for subsequent use.

[0031] (2) Weigh 5g of sulfur-containing silane coupling agent, put it in 500ml ethanol-water solution system, stir magnetically for 10min at 30℃, add oxalic acid to adjust pH to 6, continue stirring for 4.5h to make sulfur-containing silane coupler The joint agent was fully hydrolyzed, then added graphene oxide-ethanol solution, reacted at a constant temperature of 45 °C for 4 hours, then washed with ethanol and deionized water for 2-3 times, settled, and dried at 60 °C for 5 hours to obtain modified graphene oxide; The sulfur-containing silane coupling agent is bis-[γ-(triethoxysilyl)propyl]tetrasulfide.

[0032] (3) stirring and mixing the modified graphe...

Embodiment 2

[0036] The present embodiment provides a preparation method of XNBR modified graphene oxide composite filler, comprising the following steps:

[0037] (1) Weigh 6g graphene oxide powder, disperse in 50ml ethanol, ultrasonic for 30min, make it fully mix to obtain graphene oxide-ethanol solution, for subsequent use.

[0038] (2) Weigh 6g of sulfur-containing silane coupling agent, put it in 600ml ethanol-water solution system, stir magnetically for 10min at 30°C, add oxalic acid to adjust pH to 6, continue stirring for 4.5h to make sulfur-containing silane coupler The joint agent was fully hydrolyzed, then added graphene oxide-ethanol solution, reacted at a constant temperature of 45 °C for 4 hours, then washed with ethanol and deionized water for 2-3 times, settled, and dried at 60 °C for 5 hours to obtain modified graphene oxide; The sulfur-containing silane coupling agent is bis-[γ-(triethoxysilyl)propyl]tetrasulfide.

[0039] (3) stirring and mixing the modified graphene ox...

Embodiment 3

[0043] The present embodiment provides a preparation method of XNBR modified graphene oxide composite filler, comprising the following steps:

[0044] (1) take by weighing 8g graphene oxide powder, disperse in 80ml ethanol, ultrasonic 30min, make it fully mix to obtain graphene oxide-ethanol solution, for subsequent use;

[0045] (2) Weigh 8g of sulfur-containing silane coupling agent, put it in 800ml ethanol-water solution system, stir magnetically for 10min at 30°C, add oxalic acid to adjust pH to 6, continue stirring for 4.5h to make sulfur-containing silane coupler The joint agent was fully hydrolyzed, then added graphene oxide-ethanol solution, reacted at a constant temperature of 45 °C for 4 hours, then washed with ethanol and deionized water for 2-3 times, settled, and dried at 60 °C for 5 hours to obtain modified graphene oxide; The sulfur-containing silane coupling agent is bis-[γ-(triethoxysilyl)propyl]tetrasulfide.

[0046] (3) stirring and mixing the modified grap...

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PUM

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Abstract

The invention discloses a preparation method of XNBR modified graphene oxide composite filler. The method comprises the following steps: modifying graphene oxide by adopting a sulfur-containing silane coupling agent to obtain modified graphene oxide; uniformly stirring and mixing the modified graphene oxide and XNBR latex according to a weight ratio of (5-10): (100-300), and drying at 60-80 DEG C until no liquid is left to obtain a modified graphene oxide / XNBR composite material; and carrying out thin passing on the modified graphene oxide / XNBR composite material on a double-roller open mill, and carrying out hot pressing in a mold to obtain the XNBR modified graphene oxide composite filler. The preparation method is simple, the obtained composite filler is safe, environmentally friendly and good in reinforcing effect, the strength of a rubber product can be improved, the processing performance of a rubber material is improved, the dimensional stability and the physical performance are improved, and the rubber product is endowed with good abrasion resistance, tearing resistance and other performance.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a preparation method and application of an XNBR modified graphene oxide composite filler. Background technique [0002] Carboxylated nitrile rubber (XNBR) is a kind of synthetic rubber obtained by introducing a small amount of acrylic or methacrylic monomers into the molecular chain of nitrile rubber (NBR). XNBR can either use a sulfur-accelerator or peroxide system like NBR with double bonds as crosslinking sites, or it can introduce metal oxides that react with carboxyl groups or contain groups that react with carboxyl groups. The ionic aggregates formed by ionic bonds are equivalent to physical cross-linking points in the polymer matrix, and have a significant reinforcing effect on XNBR. Some reinforcing fillers containing oxygen-containing functional groups form hydrogen bonds with XNBR, which also reinforces XNBR, but whether it is ionic bonding or hydrogen bond...

Claims

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Application Information

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IPC IPC(8): C08K9/04C08K9/06C08K3/04C08L13/00
CPCC08K9/08C08K9/06C08K3/042C08L2201/08C08L13/00Y02W10/10
Inventor 熊军秦显营李宝华
Owner 深圳石墨烯创新中心有限公司
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