Composite material
A technology of composite materials and compounds, applied in the direction of nitrogen compounds, carbon compounds, epoxy resin coatings, etc., can solve the problems of difficult dispersion, coagulation, and insufficient improvement of dispersibility, etc., and achieve the effect of improving physical properties and dispersibility
Pending Publication Date: 2021-02-26
ADEKA CORP
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Problems solved by technology
The thinner the layered substance is, the smaller the number of layers is, the more likely it is to aggregate and the more difficult it is to disperse in the matrix, and sometimes sufficient physical properties cannot be obtained.
In order to improve cohesion and dispersibility in solvents, etc., exfoliated graphite whose surface is coated with polymers such as polyvinyl alcohol has been studied (for example, refer to Patent Document 7), but the improvement of dispersibility in the case of blending in resins, etc. not enough effect
Method used
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Embodiment
[0092] Hereinafter, the present invention will be described in more detail by way of examples and comparative examples. However, the present invention is not limited at all by the following Examples and the like. In addition, "part" and "%" in an Example are based on mass unless otherwise indicated.
[0093] [Manufacturing example 1]
[0094] According to Example 1 of International Publication No. 2013 / 172350 pamphlet, the exfoliated layered substance A1 was prepared from natural graphite. That is, 74 parts by mass of 1-butyl-3-methylimidazolium hexafluorophosphate and 26 parts by mass of polyethylene glycol (manufactured by FUJIFILM Wako PureChemical, product name: Polyethylene Glycol 20000) were mixed and dissolved by heating to make natural graphite ( FUJIFILM Wako Pure Chemical) 10 parts by mass were dispersed. The dispersion 0.6g was collected to 0.5cm 3 After capping the vial, the dispersion was irradiated with microwaves at 2450 MHz at 170° C. for 30 minutes using a...
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Abstract
The present invention provides a composite material which is improved in terms of dispersibility of an exfoliated layered substance into a resin or the like, and which is capable of considerably increasing physical properties such as impact resistance of a synthetic resin. A composite material which is obtained by covering the surface of an exfoliated layered substance with a compound having a reactive group, and which is configured such that: the compound having a reactive group is a compound that has at least one reactive group which is selected from the group consisting of an epoxy group, an oxetanyl group, an isocyanate group, an acrylic group, a methacrylic group, a vinyl ether group, a vinyl ester group and a hydrolyzable silyl group; and the content of the compound having a reactivegroup per 100 parts by mass of the exfoliated layered substance is from 0.1 part by mass to 100 parts by mass.
Description
technical field [0001] The present invention relates to a composite material in which the surface of an exfoliated layered substance is coated with a compound having a reactive group. Background technique [0002] Exfoliated graphite such as graphene obtained by exfoliating graphite as a laminated substance is used as a conductive auxiliary agent for electrodes of secondary batteries (for example, see Patent Document 1), conductive ink (for example, see Patent Document 2), resin or elastic It is used as a filler of body (for example, refer to Patent Documents 3 to 4), a gas barrier material (for example, to refer to Patent Documents 5 to 6), and the like. The layered substance becomes thinner as it is exfoliated, and the smaller the number of layers, the more likely it is to cause aggregation and the more difficult it is to disperse in the matrix, so that sufficient physical properties may not be obtained. In order to improve cohesion and dispersibility in solvents, etc., e...
Claims
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IPC IPC(8): C01B32/21C01B32/225C08K3/00C08K3/38C08K3/04C08K7/00C01B21/064C08K9/04C08L101/00
CPCC08K9/04C01B32/225C01B32/21C01B21/0648C08K2201/006C08K3/04C08K2003/385C08L63/00C01B21/064C08K3/00C08K7/00C08L101/00C01P2004/24C01B2204/32C09D135/02C09D163/00C09D175/04
Inventor 齐木智秋横田英之谷内亮矢野亨
Owner ADEKA CORP