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Production method of meta-aramid fiber paper-based material

一种芳纶纤维、生产方法的技术，应用在纤维原料处理、合成纤维素/非纤维素材料纸浆/纸、纸涂料等方向，能够解决层间结合强度弱、易分层起泡等问题，达到提高机械强度、性能稳定性良好、性能稳定性提升的效果

Active Publication Date: 2016-12-21
YANTAI METASTAR SPECIAL PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the actual production of medium-thick meta-aramid paper base materials generally adopts the technology of multi-layer base paper dry pressing, but there are problems of easy layering and foaming, and weak interlayer bonding strength.

Method used

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  • Production method of meta-aramid fiber paper-based material
  • Production method of meta-aramid fiber paper-based material
  • Production method of meta-aramid fiber paper-based material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Mix and co-mill the functional powder with the DMAC solution to form a uniformly dispersed suspension, then add it to the polym-phenylene isophthalamide solution, and prepare a mixed stock solution through a static mixer, wherein the functional powder It is titanium oxide with a particle size below 200nm, and the total amount added is 0.1% of the mass of polym-phenylene isophthalamide;

[0043] (2) Take the mixed stock solution and prepare the meta-aramid chopped fiber A (high-strength and high-modulus fiber) with a length of 4mm, a fineness of 1.5D, and a modulus of 60CN / dtex and a length of 1mm, a fineness of 0.5D, and a modulus fiber by dry spinning. Amount of 40CN / dtex meta-aramid chopped fiber B (as-spun fiber), respectively dispelled to a concentration of 0.05%;

[0044] (3) Take the polym-phenylenediamine isophthalamide solution and prepare meta-aramid precipitated fibers in a sedimentation machine. After refining, pass through multi-stage sieving, and select...

Embodiment 2

[0050] (1) Mix and co-mill the functional powder with the DMAC solution to form a uniformly dispersed suspension, then add it to the polym-phenylene isophthalamide solution, and prepare a mixed stock solution through a static mixer, wherein the functional powder It is titanium oxide, aluminum oxide, and bismuth oxide with a particle size below 200nm, and the three are mixed according to a mass ratio of 1:1:1, and the total amount added is 1% of the mass of polym-phenylene isophthalamide;

[0051] (2) Take the mixed stock solution and prepare the meta-aramid chopped fiber A (high-strength and high-modulus fiber) with a length of 6mm, a fineness of 2.0D, and a modulus of 70CN / dtex and a length of 2mm, a fineness of 0.5D, and a modulus fiber by dry spinning. Amount of 30CN / dtex meta-aramid chopped fiber B (as-spun fiber), respectively dispelled to a concentration of 0.1%;

[0052] (3) Take the polym-phenylenediamine isophthalamide solution and prepare meta-aramid precipitated fib...

Embodiment 3

[0071] (1) Mix and co-mill the functional powder with the DMAC solution to form a uniformly dispersed suspension, then add it to the polym-phenylene isophthalamide solution, and prepare a mixed stock solution through a static mixer, wherein the functional powder It is alumina with a particle size below 200nm, and the total amount added is 2% of the mass of polym-phenylene isophthalamide;

[0072] (2) Take the mixed stock solution and prepare the meta-aramid chopped fiber A (high-strength and high-modulus fiber) with a length of 7mm, a fineness of 2.0D, and a modulus of 70CN / dtex and a length of 2mm, a fineness of 0.5D, and a modulus fiber by dry spinning. Amount of 30CN / dtex meta-aramid chopped fiber B (as-spun fiber), decomposed to a concentration of 0.2% respectively;

[0073] (3) Take the polym-phenylene isophthalamide solution and prepare the meta-aramid precipitated fiber in the sedimentation machine, pass through multi-stage screening after refining, and select ≤30 mesh, 3...

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Abstract

The invention discloses a production method of a meta-aramid fiber paper-based material. The production method includes the following steps that functional powder is added into a polyisophthaloyl metaphenylene diamine solution to obtain a uniform mixed stock solution, and meta-aramid chopped fiber is prepared through a dry spinning method; meta-aramid fibrid is prepared from the polyisophthaloyl metaphenylene diamine solution; the meta-aramid fibrid is screened in a multi-level mode, and fiber with suitable mesh numbers are selected and combined by the ratio; aramid fiber is mixed and defibered uniformly and is formed by adopting an ultralow-concentration inclined wire forming machine through ultrasonic wave treatment in a wet process papermaking mode, aramid raw paper is obtained through squeezing and drying, and surface coating is carried out on the raw paper; multi-section calendaring and rewinding cutting are carried out to prepare the high-performance aramid paper-based material. The meta-aramid paper-based material with the thickness of 1.5-30 mil can be prepared and is high in whiteness, excellent in mechanical strength, dielectric property, ageing resistance and flame retardance and high in performance stability, and the surface is smooth and even.

Description

technical field [0001] The invention belongs to the intersection field of papermaking industry and insulation industry, and specifically relates to a production method of meta-aramid fiber paper base material. Background technique [0002] The meta-aramid paper-based material is an all-polyamide synthetic material prepared from meta-aramid chopped fibers and meta-aramid fibrids, and is prepared by modern paper-making wet-sheet-making and hot-pressing molding processes. Because of its high strength and high modulus, light flame retardant, high temperature resistance, corrosion resistance and excellent dielectric properties, it can be used as insulating materials and honeycomb core materials and widely used in important fields such as aerospace, rail transit, electrical insulation, etc. Indispensable base material. [0003] As an important strategic reserve material and high-tech material, many experts and scholars have conducted long-term research on meta-aramid paper-based ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F11/00D21H15/10D21H13/26D21H19/30B32B27/34B32B27/18B32B27/02B32B27/12B32B7/08B32B37/10B32B37/06B32B38/00B32B38/18
CPCD21H13/26B29C43/24B29K2077/10B29L2007/002C08L77/10C08L2201/02C08L2201/08C08L2201/56C08L2203/12D01D5/04D01F1/07D01F1/10D01F6/605D21H19/10D21H19/84D21H27/00D21F11/00B32B5/02B32B5/26B32B7/08B32B37/06B32B37/10B32B38/00B32B38/18B32B2038/0056B32B2250/20B32B2255/02B32B2255/26B32B2262/0269B32B2264/105B32B2307/206B32B2307/3065B32B2307/714D21H15/10D21H19/30
Inventor 王志新江明邓钧波孙岩磊孙静
Owner YANTAI METASTAR SPECIAL PAPER
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