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Preparation method and evenness measurement method for carbon fiber synthetic paper

A measurement method, carbon fiber technology, applied in the direction of synthetic cellulose/non-cellulose material pulp/paper, fiber raw material processing, fiber dispersant addition, etc., can solve the problem of insufficient funds to purchase imported instruments, uneven manufacturing levels, sales High price and other problems, to achieve the effect of excellent heating uniformity, wide application range and simple method

Inactive Publication Date: 2016-01-27
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In addition, on the one hand, the manufacturing level of domestically produced equipment for measuring sheet evenness is uneven, resulting in large differences in the results of sheet evenness testing; on the other hand, the price of imported equipment for measuring sheet evenness remains high. Some paper mills and paper measuring institutions do not have enough funds to purchase imported instruments

Method used

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  • Preparation method and evenness measurement method for carbon fiber synthetic paper
  • Preparation method and evenness measurement method for carbon fiber synthetic paper
  • Preparation method and evenness measurement method for carbon fiber synthetic paper

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preparation example Construction

[0035] The invention discloses a method for preparing carbon fiber synthetic paper, which comprises mixing pulping of carbon fibers and plant fibers, papermaking, pressing, and drying. % by weight of plant fibers, 0.1 to 1.0% by weight of dispersants are placed in a decomposer according to the mixing ratio and added with water to decompose; use a British Messmer paper sheet former to carry out manual sheeting, copy paper sheets, and put them into a constant temperature and humidity testing room for drying.

[0036] The invention also discloses a method for detecting the evenness of the synthetic fiber paper. The light source used in the method can be a commercially available scanner with an optical resolution of 4800×2400dpi or higher. The light source: LED, and the paper sample to be tested is placed on the scanner flat plate Above, the LED light source emits uniform and stable light, and the paper pattern enters the camera to convert it into a digital signal, forming an image...

Embodiment 1

[0050] Example 1 Preparation and formation measurement of carbon fiber synthetic paper.

[0051] Prepare synthetic fiber paper in the following proportions:

[0052] Carbon fiber (4mm) 5 parts by weight

[0053] Plant fiber (degree of beating 16 ° SR) 95 parts by weight

[0054] Dispersant 0.5 parts by weight

[0055] The carbon fiber, plant fiber and dispersant with the above content are decomposed in a plant decomposer, and the decomposer rotation speed is set to 15,000 rpm. The decomposed pulp is made into paper on a paper former, and then undergoes two pressing processes: First, make the effective pressure on the paper sheet be 400±10kPa, keep this pressure for 5min±15s, perform a press, replace the absorbent paper and perform the second press, the effective pressure on the paper page is 400±10kPa, keep this pressure 2min±15s, put it into a constant temperature and humidity environment after the pressing process and dry to obtain synthetic fiber paper. The results of me...

Embodiment 2

[0059] Example 2 Preparation and formation measurement of carbon fiber synthetic paper.

[0060] Prepare synthetic fiber paper in the following proportions:

[0061] Carbon fiber (4mm) 5 parts by weight

[0062] Plant fiber (degree of beating 50 ° SR) 95 parts by weight

[0063] Dispersant 0.5 parts by weight

[0064] In this embodiment 2, the degree of beating of the plant fiber is adjusted to 50 ° SR, and other raw materials and proportioning are unchanged, and the results obtained are listed in Table 4:

[0065] Table 4

[0066]

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Abstract

The invention discloses a preparation method for carbon fiber synthetic paper. The preparation method comprises the steps of mixing carbon fibers with plant fibers for conducting pulping, manufacturing paper with pulp and forming the paper, conducting secondary squeezing and conducting drying under the condition of constant temperature and humidity. The carbon fiber synthetic paper prepared through the preparation method has good electrical conductivity, thermal conductivity, mechanical properties and the like and can be widely applied to electromagnetic wave shielding materials, heat-emitting materials, aerospace materials and the like. Meanwhile, the invention provides an evenness measurement method for the carbon fiber synthetic paper, measurement efficiency for measuring evenness of the paper is effectively improved, measurement cost for measuring evenness of the paper is effectively lowered, the application scope is wide, and reproducibility is good.

Description

technical field [0001] The invention belongs to the field of synthetic fiber paper, and relates to a synthetic fiber paper prepared by using carbon fiber and plant fiber as structural fibers and supplemented with a dispersant, and in particular to a preparation method and a method for measuring the formation of the carbon fiber synthetic paper. Background technique [0002] Since the surface of the carbon fiber is a turbostratic graphite structure, there are obvious cracks, the surface is relatively rough, and the friction between the carbon fibers is relatively large, so it is difficult to disperse into a single fiber. It is difficult to connect carbon and carbon with non-polar covalent bonds, resulting in less active groups on the surface of carbon fibers, not easy to be wetted by water, easy to flocculate in water, and relatively poor in dispersion performance. If the carbon fibers are not uniformly dispersed in the paper, they will It will cause the local resistance of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H13/50D21H15/10D21H21/08G01N21/84
Inventor 李红斌房桂干邓拥军沈葵忠施英乔丁来保韩善明焦健梁芳敏林艳
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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