Multiple layer composite micropore filtration separation material and preparation method and use thereof
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A technology of microporous filtration and separation of materials, applied in the direction of filtration separation, separation method, semi-permeable membrane separation, etc., to achieve the effect of highlighting high temperature resistance, improving uniformity, and controlling the uniformity of pores
Active Publication Date: 2009-03-11
ZHUZHOU TIMES FIBER PIONEER MATERIAL TECH CO LTD
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However, this method requires the preparation of sea-island fibers with a specia
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Embodiment 1
[0033] according to figure 1 Described technological process, concrete implementation steps are as follows:
[0034] (1) Get a certain amount of PBO fiber (trade name: Zylon, produced by Toyobo Corporation in Japan, chopped fiber, length 3mm, diameter 15 μ m), beat with a Dutch type beater, and prepare the PBO fibrillation fiber with a freeness of 100ml in Canada .
[0035] (2) The obtained PBO fibrillation fiber and PET bonding fiber (produced by Kuraray Company, fiber diameter 3-4 μ m, fiber length 3 mm, cortex melting point 130 ° C) are evenly mixed with the fiber dry mass ratio of 1: 1, and the Disperse in water medium, add sodium dodecylbenzenesulfonate as dispersant.
[0036] (3) Forming on a Tappi standard hand sheet forming machine, dehydrating and pressing.
[0037] (4) Dry at 100°C for 5 minutes, and the preparation weight is 30g / m 2 base paper.
[0038] (5) The base paper was subjected to hot-press molding (line pressure 100Kg / cm, temperature 120° C.) to obtai...
Embodiment 2
[0040] The steps of this embodiment are the same as those of Embodiment 1 except for the following features.
[0041] In the step (1), a certain amount of PBO fiber (trade name: Zylon, produced by Toyobo Corporation in Japan, chopped fiber, length 3mm, diameter 15 μm) is taken and beaten with a Dutch beater to prepare PBO with a freeness of 200ml in Canada Fibrillated fibers.
Embodiment 3
[0043] The steps of this embodiment are the same as those of Embodiment 1 except for the following features.
[0044]In step (1), a certain amount of PBO fibers (trade name: Zylon, produced by Toyobo Corporation in Japan, chopped fibers, length 3mm, diameter 15 μm) is taken, and beaten with a Dutch beater to prepare PBO with a freeness of 750ml in Canada Fibrillated fibers.
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Abstract
The invention relates to a high temperature resistant micropore filter separation material, a method for preparing the material and the application thereof, wherein, the preparation method comprises the following steps: (1) the fiber which can be fibrillated is prepared into fully fibrillated fiber material by pulping process; (2) slurry is obtained after the fully fibrillated fiber material is dispersed in water; (3) advancing to the net and shaping are implemented; (4) drying is carried out for obtaining the product. The product can be processed by hot press molding again. The step of impregnation or coating bonding resin can be added between step (4) and (5). The method can be operated easily, is suitable for application of large scale, the obtained high temperature resistant micropore filter separation material has the outstanding performance of high temperature resistance, meanwhile the uniformity of the holes is excellent, the average aperture can reach 10nm-1mum, and the method can be used in such fields as preparing filter material, battery septum material, electrolytic capacitor paper and double electric layers capacitor septums, etc.
Description
technical field [0001] The invention relates to the technical field of papermaking and filtration separation, in particular to a high temperature resistant microporous filtration separation material and its preparation method and application. Background technique [0002] Microporous filtration (MF for short) refers to the process of separating by sieving. The diameter of the separated components ranges from 0.01 to 20 μm, and mainly removes micron particles, submicron particles and subsubmicron particles. Microfiltration is mostly used for the treatment of industrial ultrapure water, the pretreatment of reverse osmosis, the removal of impurities in the wine brewing process, and the separation of serum to filter out bacteria, serum, macromolecular substances and fine suspended particles. This kind of material can also be applied to the battery separator, the main function is to isolate the positive and negative electrodes and prevent the electrons in the battery from freely ...
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Application Information
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