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Wet dispersion and forming methods of fiber and particles

A dispersing and wet technology, which is applied to the surface coating device, coating, special surface, etc., can solve the problems of low density, sedimentation or floating of chemical synthetic fibers, and achieve simple dispersing method, excellent dispersing effect, Ease of dehydration molding

Active Publication Date: 2017-02-22
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Similar to solid particles, some chemical synthetic fibers have low density, while mineral fibers and metal fibers have high density,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 425g of ceramic fibers, 120g of vermiculite particles with a particle size range of 0.2-2mm, 68g of methylcellulose, and 5g of β-cyclodextrin into 4L of water, and stir at 80°C for 60 minutes (500r / min) to form a uniform and stable slurry material. The fibers are completely dispersed, no agglomeration is formed, and the vermiculite particles are completely suspended.

[0029] In the process of conveying the slurry to the forming net, use a pipeline mixer to evenly add polyaluminium chloride flocculant, the concentration of the slurry flocculant is 0.3g / L, filter and dehydrate on the forming net for about 2 minutes, and then roll to form a flat The parison in wet state is dried at 105° C. for 4-6 hours to obtain a ceramic fiber insulation board containing vermiculite particles.

Embodiment 2

[0031] Weigh 25g of polyester hollow fiber, 10g of calcium carbonate particles of 100-500μm, 5g of amylopectin, 2g of γ-cyclodextrin, and 100g of water glass, add them together to 1L of water, and stir them under mechanical force at 60°C for 40 minutes (500r / min) to form a uniform and stable slurry, the polyester hollow fibers are completely suspended, no floating flocs are formed, and calcium carbonate particles are not precipitated.

[0032] The slurry is wet-sprayed to the exterior wall of the building to form a thermal insulation coating with a loose structure.

Embodiment 3

[0034] Weigh 15g of aramid (type 1414) aramid fiber, 100g of graphite powder of 5-200μm, 5g of branched-chain carboxymethyl cellulose, 5g of γ-cyclodextrin, and 10g of acrylic emulsion, and add them together to 2L of water, at 50°C Under mechanical stirring for 20 minutes (500r / min), a uniform and stable slurry was formed.

[0035] The slurry is wet-sprayed to obtain a high-strength coating with electromagnetic shielding effect.

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PUM

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Abstract

The invention relates to wet dispersion and forming methods of fiber and particles. The wet dispersion method comprises the steps that water-soluble branched-chain polymers are added into a water system of the fiber and particles, all the materials are stirred and mixed to be uniform, and slurry with the uniformly dispersed fiber and particles is obtained. The effect is better by adding cyclodextrin and visco-elastic materials after the water-soluble branched-chain polymers are added. The invention further provides a forming method of the slurry obtained through the wet dispersion method. The forming method is used for plate producing or spray processing to obtain a coating. The dispersion method is simple, and the dispersion effect is excellent. The branched-chain polymers and cyclodextrin are used for dispersing the particles and fiber, and a flocculating agent is added before a finished product is processed, so that the branched-chain polymers lose efficacy, and follow-up dehydration and forming processing is conducted conveniently.

Description

technical field [0001] The invention relates to a water-phase wet dispersion and molding method for fibers and particles. The dispersion method can be used to prepare materials for fiber spraying systems, and can also be used for wet molding to produce fibers with different thicknesses, porosity, shapes, and flexibility. Composite fiber products, such as fiber blankets, boards, blocks, pads; the invention belongs to the field of functional materials. Background technique [0002] Fibers include organic fibers and inorganic fibers. Organic fibers refer to fibers whose fiber materials are organic, including polyester, acrylic, nylon, polypropylene, and high-performance fibers including aramid, ultra-high molecular weight polyethylene fiber (UHMWPE fiber), polypara phenylene benzobisoxazole fiber (PBO fiber), polybenzimidazole fiber (PBI fiber), polyphenylenepyridinediimidazole fiber (M5 fiber), polyimide fiber (PI fiber), etc., organic fiber It has the characteristics of low ...

Claims

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Application Information

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IPC IPC(8): C08J3/05C08J3/03B05D7/24B05D5/12B05D5/00
CPCB05D5/00B05D5/12B05D7/24C08J3/03C08J3/05C08J2301/28C08J2303/02C08J2333/00C08J2333/02C08J2333/26C08J2405/16
Inventor 王兆江庄京顺
Owner QILU UNIV OF TECH
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