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Aramid paper with potassium titanate whisker, and preparation method of aramid paper

A technology of potassium titanate whiskers and aramid paper, which is applied in the field of materials and papermaking, and achieves the effects of strong innovation, simple production process and high electrical insulation

Active Publication Date: 2015-05-20
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the patents listed above and other patents in the same field are all focused on improving the performance of paper sheets such as mechanical strength and papermaking process, and how to reduce the production cost of aramid paper and improve the durability of paper sheets under the premise of ensuring the performance of aramid paper At present, there is no relevant research on abrasiveness and high temperature resistance.

Method used

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  • Aramid paper with potassium titanate whisker, and preparation method of aramid paper
  • Aramid paper with potassium titanate whisker, and preparation method of aramid paper
  • Aramid paper with potassium titanate whisker, and preparation method of aramid paper

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preparation example Construction

[0044] see figure 1 , a kind of preparation method of the aramid paper that adds potassium titanate whisker, comprises the following steps:

[0045] Step 1: dissolving and dispersing any one of the aramid fiber X, that is, the meta-aramid chopped fiber and the para-aramid chopped fiber, to prepare a slurry suspension (A);

[0046] Step 2: Fibrillating one or more fibers of the aramid fiber Y, that is, the para-aramid fibrid fiber, the para-aramid pulp fiber, and the meta-aramid fibrid fiber, and dissolving and dispersing Obtain slurry suspension (B);

[0047] Step 3: Mix potassium titanate whiskers with the slurry suspension (B) prepared in step 2 to obtain a mixture, wherein the mass concentration of potassium titanate whiskers is 0.5-8%, and then add cationic polypropylene to the mixture Amide, the addition amount is 0.02-0.1% of the dry weight of the fibers in the slurry suspension (B). During the process of adding cationic polyacrylamide, use a stirrer to stir the differ...

Embodiment 1

[0058] Step 1: dissolving and dispersing the aramid fiber X, that is, the meta-aramid chopped fiber, to prepare a pulp suspension (A);

[0059] Step 2: fibrillating and dispersing the aramid fiber Y, that is, the meta-aramid fibrid fiber, to obtain a slurry suspension (B);

[0060] Step 3: Mix potassium titanate whiskers with the slurry suspension (B) prepared in step 2 to obtain a mixture, wherein the mass concentration of potassium titanate whiskers is 1%, and then add cationic polyacrylamide to the mixture, The addition amount is 0.02% of the dry weight of the fibers in the slurry suspension (B). During the process of adding cationic polyacrylamide, stir with a stirrer to fully mix and disperse the different components. The stirring time is 9 minutes, and the stirring speed is controlled at 300rpm, obtained slurry suspension (C);

[0061] Step 4: Mix the slurry suspension (A) prepared in step 1 with the slurry suspension (C) prepared in steps 2 and 3, and control the arami...

Embodiment 2

[0064] Step 1: dissolving and dispersing the aramid fiber X, that is, the para-aramid chopped fiber, to prepare a pulp suspension (A);

[0065] Step 2: fibrillating and dispersing the aramid fiber Y, that is, the para-aramid pulp fiber, to obtain a pulp suspension (B);

[0066] Step 3: Mix potassium titanate whiskers with the slurry suspension (B) prepared in step 2 to obtain a mixture, wherein the mass concentration of potassium titanate whiskers is 1%, and then add cationic polyacrylamide to the mixture, The addition amount is 0.03% of the dry weight of the fibers in the slurry suspension (B). During the process of adding cationic polyacrylamide, stir with a stirrer to fully mix and disperse the different components. The stirring time is 10 minutes, and the stirring speed is controlled at 400rpm, obtained slurry suspension (C);

[0067] Step 4: Mix the slurry suspension (A) prepared in step 1 with the slurry suspension (C) prepared in steps 2 and 3, and control the aramid f...

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Abstract

The invention discloses an aramid paper with a potassium titanate whisker, and a preparation method of the of aramid paper. The preparation method comprises the following steps: adding the low-price potassium titanate whisker with excellent performances, mixing, defibering and dispersing the potassium titanate whisker and an aramid fiber to obtain a uniform suspension, performing papermaking and forming on an inclined screen paper machine, pressing, drying and further performing hot-pressing on a hot press to obtain the aramid paper. The production cost of the aramid paper can be markedly lowered, the mechanical performance, especially the high temperature-resistant property and wear resistance of the aramid paper can be improved; in addition, the potassium titanate whisker and the aramid fiber are mixed for use to form a fiber-whisker tiny coating body, the synergistic and hybrid effects of the fiber can be achieved, the comprehensive performances of the finished paper can be improved, the paper machine speed is increased and the production efficiency can be increased. Compared with a conventional aramid paper production method, the method is simple in technology and low in preparation cost and the performances are excellent.

Description

technical field [0001] The invention belongs to the field of materials and papermaking, and in particular relates to aramid paper added with potassium titanate whiskers and a preparation method thereof. Background technique [0002] Aramid fiber is a synthetic fiber material with many advantages such as high strength, high modulus, high temperature resistance, low density, small heat shrinkage, and good dimensional stability. It has the reputation of "synthetic steel wire". Aramid paper prepared from aramid fibers through wet paper forming process has light specific gravity, high specific strength, high specific stiffness, impact resistance, outstanding corrosion resistance and self-extinguishing properties, good high temperature stability and electromagnetic wave permeability Performance and other characteristics, as an advanced composite material substrate, it is widely used in high-temperature insulation materials, aerospace and high-performance electronic equipment and o...

Claims

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Application Information

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IPC IPC(8): D21H13/26D21H15/10D21H17/66D21H17/55
Inventor 杨斌张美云陆赵情刘毅娟
Owner SHAANXI UNIV OF SCI & TECH
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