Oligomer-grafted nanofillers and advanced composite materials

A technology of nano-fillers and oligomers, which is applied in the field of composite materials and nano-materials, and can solve problems such as damage to the mechanical properties of composite materials

Inactive Publication Date: 2016-06-01
ADAMA MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the mechanical properties of such composites are often compromised d

Method used

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  • Oligomer-grafted nanofillers and advanced composite materials
  • Oligomer-grafted nanofillers and advanced composite materials
  • Oligomer-grafted nanofillers and advanced composite materials

Examples

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Effect test

example 1

[0083] Example 1 Functionalization of Graphene Oxide Nanoparticles Using Polybutadiene-Polyacrylonitrile Rubber Oligomers

[0084] This example is the attachment of polybutadiene-polyacrylonitrile rubber oligomer to graphene oxide through a coupling agent. To functionalize graphene oxide (GO) with rubber oligomers, 0.2 g GO was dispersed into 50 mL dimethylformamide (DMF) by sonication, followed by the addition of 2 g diphenylmethane diisocyanate (MDI). The mixture was stirred at room temperature for one day and then solidified with dichloromethane. After washing at least five times with dichloromethane centrifugation, the isocyanate-functionalized GO was redispersed in 100 mL of DMF. 4 g of amine-terminated polybutadiene-polyacrylonitrile (ATBN 1300×42, molecular weight 900 g / mol, 18% polyacrylonitrile) were added and the mixture was stirred at 50° C. for 12 h. ATBN-functionalized GO was separated by centrifugation and washed with acetone at least 5 times. The product wa...

example 2

[0091] Example 2 uses the OGN of Example 1 to prepare composite materials

[0092] The desired amount of ATBN-functionalized GO was dispersed into THF by sonication, and then this dispersion was added to the THF solution of polybutadiene-polyacrylonitrile copolymer to obtain modified The final composite of graphene oxide. The complexes are obtained after solvent evaporation or precipitation in a non-solvent such as methanol.

example 3

[0093] Example 3 Functionalization of Graphene Nanoparticles with Styrenic Oligomers

[0094] To grow oligostyrene on graphene, methylsilylated graphene was obtained by stirring graphene oxide and 3-chloropropyltrimethoxysilane in ethanol at 60 °C for 12 h. The chlorine-functionalized graphene was then dispersed into DMF containing CuCl and styrene for atom transfer radical polymerization (ATRP) reaction.

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Abstract

Oligomer-grafted nanofiller compositions and composites including oligomer-grafted nanofillers are disclosed. An oligomer-grafted nanofiller composition for disposition in a polymer matrix, the polymeric matrix comprising polymers derived from a plurality of polymerizable units, can include a nanoparticle, one or more coupling groups bonded to the nanoparticle; and one or more oligomers bonded to the one or more coupling groups. In an embodiment the oligomer is derived from two or more polymerizable units, at least one polymerizable unit being at least substantially similar to at least one of the polymerizable units of the polymer matrix. In another embodiment the oligomer comprises two or more polymerizable units and improves dispersion, interfacial strength, or both dispersion and interfacial strength between the nanoparticle and the polymer matrix. Composites and methods are also disclosed.

Description

[0001] Cross references to related patent applications [0002] This application claims priority to US Provisional Patent Application No. 61 / 791,132, filed March 15, 2013. technical field [0003] The present disclosure relates to the field of composite materials and nanomaterials for improving the properties of polymeric materials. Background technique [0004] Polymer composites are used in a wide variety of applications ranging from transportation vehicles to sports equipment and various mechanical components. Due to their relatively low density and high strength, polymer composites can advantageously replace heavier metallic materials. However, polymer composites lack certain desirable properties compared to metals, such as high impact strength (eg, "toughness"), electrical conductivity, and resistance to molecular transport. Previous attempts have been made to add filler particles to polymer composites to improve these properties. However, the mechanical properties o...

Claims

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Application Information

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IPC IPC(8): B22F1/00
CPCC09C1/42C09C1/44C09C1/46C09C1/56C09C3/10C09C1/28C09C1/3081C01P2002/72C01P2002/82C01P2004/13C01P2004/16C01P2004/64C08G83/001C08F292/00C08K9/08C08F2438/00C08G83/002C09C3/08C08F212/08C08F230/085C08J3/24C08J5/00C08J2309/02C08J2325/06C08J2333/06
Inventor 弗朗西斯·R·蒂博多钱玉强安德烈亚斯·斯坦克里斯托弗·W·马乔什科尼古拉斯·D·佩特科维奇
Owner ADAMA MATERIALS
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