Dried cellulose fibers, cellulose fiber-resin composite, and molded article

A technology of cellulose fiber and dry body, which is applied in the field of cellulose fiber dry body, can solve problems such as difficulty and shrinkage, and achieve the effect of improving physical properties

Active Publication Date: 2020-08-14
SUGINO MACHINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In addition, cellulose is a natural product, and its fiber diameter is determined by the type of plant. Typical plant fibers have a fiber diameter of 20 to 50 μm. It is very difficult to further reduce, process and adjust the original average fiber diameter.

Method used

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  • Dried cellulose fibers, cellulose fiber-resin composite, and molded article
  • Dried cellulose fibers, cellulose fiber-resin composite, and molded article
  • Dried cellulose fibers, cellulose fiber-resin composite, and molded article

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0122] Using cotton derived from cotton as the raw cellulose, an aqueous dispersion of cellulose fibers was produced.

[0123] First, cotton is pulverized with a cutter (Pulverisette 15 manufactured by Fritsch) to obtain cotton powder-like cellulose. The obtained cotton powdery cellulose was made into a concentration of 10% by mass, and a dispersion was prepared from ion-exchanged water, and subjected to 10 defibrillation treatments with a wet micronization device (manufactured by Sugino Machinery Co., Ltd., device name: Starburst) , Decompose fiber. After that, the ratio of the hemicellulose component in the constituent sugar of the cellulose fiber was measured by the analysis of constituent sugars. In addition, after freeze-drying the obtained aqueous cellulose fiber dispersion to obtain a dry powder sample, the average molecular weight thereof was determined by the viscosity method, and the presence or absence of cellulose type I crystals was confirmed by X-ray diffraction me...

manufacture example 2

[0130] Do not add condensed ricinoleic acid ester (trade name: CRS-75, manufacturer: Sakamoto Pharmaceutical Industry) as a surfactant to the 10% by mass aqueous dispersion of cellulose fibers obtained in the same manner as in Production Example 1. Heat drying was performed in the same manner as in Example 1 to obtain a granular dried body. Furthermore, in the same manner as in Production Example 1, a pin mill was used for pulverization to obtain a dried cellulose fiber. Use an electron microscope to confirm whether the obtained dried cellulose fiber is fibrous ( figure 2 ). When it is determined that the fiber shape after drying is fibrous, the average fiber diameter is measured. The results are shown in Table 2.

manufacture example 3

[0132] Condensed ricinoleic acid ester (trade name: CRS-75, manufacturer: Sakamoto Pharmaceutical Industry) was added as a surfactant to the manufacturing example in a manner of 1 part by mass relative to 100 parts by mass of cellulose fibers (solid content) 1 In the same 10% by mass aqueous dispersion of cellulose fibers obtained in the same manner, fully agitated and mixed. After that, it was heated and dried in the same manner as in Production Example 1 to obtain a granular dried body. Furthermore, as in Production Example 1, a pin mill was used for pulverization to obtain a dried cellulose fiber. Confirm with an electron microscope whether the obtained dried cellulose fiber is fibrous ( image 3 ). The fiber shape after drying is determined, and when it is a fiber shape, the average fiber diameter is measured. The results are shown in Table 2.

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Abstract

The invention provides dried cellulose fibers, a cellulose fiber-resin composite comprising the same, and a molded article. Provided are dried cellulose fibers that are satisfactory dispersible in a resin when the cellulose fibers are mixed with the resin and can improve physical properties such as tensile elastic modulus and tensile strength of a resin composite, a cellulose fiber-resin compositeincluding the cellulose fibers, and a molded article. The dried cellulose fibers include cellulose fibers, the cellulose fiber-resin composite includes the dried cellulose fibers, and the molded article is formed from the cellulose fiber-resin composite. The cellulose fibers have an average fiber diameter of 0.1 mu m more and 20 mu m or less and have a hemicellulose content of 50% or less in constituent sugar components. The dried cellulose fibers have a water content of 10% by mass or less.

Description

Technical field [0001] The invention relates to a cellulose fiber dried body, a cellulose fiber resin composite body and a molded body. Background technique [0002] Cellulose is the main component of plant cell walls. It coexists with lignin and hemicellulose to support plants. In addition, cellulose is the most produced and accumulated resource on the earth, so it is expected that it can be effectively used. Cellulose is used in various industrial fields, one of which can be cited as a filler. Filler refers to a particulate or fibrous substance added to resin, rubber, paint, etc. in order to improve strength, functionality, and reduce cost. [0003] In the development of polymer materials, the compounding of functional fillers and polymers is an important development factor. Depending on the shape of the filler, the impact on the physical properties of the composite material varies greatly. In particular, acicular and fibrous fillers have characteristics such as high mechanic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L1/02C08L23/12C08L77/02C08L51/06
CPCC08L1/02C08L23/12C08L77/02C08L2205/16C08L2205/03C08L51/06C08H99/00C08H8/00C08L77/06C08L5/14C08L91/00C08L23/147C08B1/00C08L2205/025
Inventor 森本裕辉峯村淳永田员也真田和昭
Owner SUGINO MACHINE
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