Resin composition and method for manufacturing same

A technology of resin composition and manufacturing method, which is applied in the field of resin composition and its manufacture, can solve the problems of not improving the components of defibrillation, etc., and achieve the effects of low cost, reduced manufacturing cost, and less environmental load

Active Publication Date: 2018-08-03
KYOTO UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these components such as urea and biuret in Patent Document 2 are not components that improve the defibration of pulp.

Method used

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  • Resin composition and method for manufacturing same
  • Resin composition and method for manufacturing same
  • Resin composition and method for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0104] In the preparation of the resin composition of the present invention, a fiber disintegrating agent and a resin such as high-density polyethylene are added to cellulose fibers such as wood-derived pulp to prepare a mixture (premix). By melt-kneading this mixture using a twin-screw kneader (twin-screw extruder) or the like, the cellulose fibers can be defibrated down to the nanoscale.

[0105] Wherein, the timing of adding the fiber-defibrating aid is not limited.

[0106]The disintegrating aid can be mixed into a dry mixture (premix) containing cellulose fibers and resin by adding it during pulp beating or by adding it to water containing pulp.

[0107] As a result, a composite resin material containing CNF and exhibiting high mechanical properties can be produced. In the resin composition of the present invention, by including a defibrating aid, in the resin composition, the preparation of CNF (fibrillation of cellulose fibers), the dispersion of CNF in the resin, and ...

Embodiment

[0304] Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples.

[0305] The present invention is not limited thereto.

[0306]

[0307] The embodiment is a technique of producing a resin composite material at low cost by using a defibrillating agent (urea, etc.) and a dispersant (a water-soluble polymer dispersant, etc.) for pulp. This process is a pretreatment process of water system without using organic solvents.

[0308] (1) Dispersant used (block copolymer)

[0309] The scheme of the dispersant is shown below.

[0310] [chemical formula 3]

[0311]

[0312] The scheme of the dispersant is shown in Table 4.

[0313] [Table 4]

[0314]

[0315] Dissolve the monomer that becomes the resin affinity segment (chain A): dicyclopentenyloxyethyl methacrylate (DCPOEMA) (manufactured by Hitachi Chemical, FA-512M) in an amphiphilic solvent (such as propylene glycol monopropyl ether) for living free radic...

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Abstract

The purpose of the present invention is to formulate a technique for manufacturing a resin composite material at low cost. Provided is a resin composition including cellulose fibers, a fiber-looseningauxiliary agent, and a resin.

Description

technical field [0001] The present invention relates to a resin composition and a method for producing the same. Background technique [0002] Cellulose fibers are fibers that are as light as 1 / 5 of the weight of steel, exhibit strength that is more than 5 times that of steel, and exhibit a low coefficient of linear thermal expansion that is 1 / 50 of glass. There is known a technique of adding mechanical strength to a resin composition by including the cellulose fiber in a matrix such as a resin as a filler. [0003] In addition, in order to further increase the mechanical strength of cellulose fibers, cellulose nanofibers (CNF, also expressed as microfibrillated plant fibers (MFC), etc.) are produced by defibrating cellulose fibers. [0004] CNF is a fiber obtained by subjecting cellulose fibers to a process such as mechanical defibration, and has a fiber width of about 4 nm to 100 nm and a fiber length of about 5 μm. The specific surface area of ​​CNF is high (250m 2 / g~...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/00C08J3/20C08K5/16C08L97/02C08L101/02
CPCC08F2/20C08F293/005C08L23/0815C08L2205/16C08L97/02C08L1/02C08K7/02C08L53/00C08K5/21C08F220/281C08F220/54C04B26/22C08K5/09
Inventor 辻井敬亘榊原圭太原田哲哉生熊崇人大川淳也松末一纮新谷淳次
Owner KYOTO UNIV
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