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Method of manufacturing fire-resistant high-performance organic pulp-shape fibre

A manufacturing method and organic fiber technology, which is applied in the field of manufacturing high-temperature-resistant high-performance organic pulp-like fibers, can solve problems such as industrialization difficulties and low efficiency, and achieve the effect of improving efficiency

Inactive Publication Date: 2007-10-24
SHANGHAI LABON TECHNICAL FIBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the patent has the following problems: (1) It only involves the recycling of aramid fiber scraps, and does not involve the recycling of high-performance fiber waste such as spinning and other non-fiber products such as aramid fiber and PBO, and waste silk for optical cables. (2) It is proposed to classify aramid fiber leftovers, cut them into certain length and width cloth strips with scissors, and then cut, disperse, and grind them, and then beating and dispersing them for 0.5 to 5 hours to obtain aramid fiber pulp Meal, low efficiency, more difficult to industrialize

Method used

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  • Method of manufacturing fire-resistant high-performance organic pulp-shape fibre
  • Method of manufacturing fire-resistant high-performance organic pulp-shape fibre

Examples

Experimental program
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Effect test

example 1

[0023] Punch a batch of aramid waste silk for optical cables into chopped fibers with a length of 4-6 mm on a punching machine with a nominal force of 63 tons, weigh 50 kg and disperse them in 5 tons of acrylamide copolymer containing 180 g of quaternary ammonium salt and 60 g of polyacrylic acid In the water of the polymer dispersant compounded by salt polymer, the suspension formed is pumped into a three-stage pipeline high-shear dispersing emulsifier at a flow rate of 5t / h for grinding, and the obtained slurry is centrifugally dehydrated and dried to obtain Aramid pulp-like fibers with a length distribution of 2.1±0.4mm and a specific surface area of ​​7±2m 2 / g.

example 2

[0025] Punch a batch of aramid waste silk for optical cables into short cut fibers with a length of 4-6 mm on a punching machine with a nominal force of 63 tons, weigh 75 kg and disperse them in 5 tons of acrylamide copolymer containing 240 g of quaternary ammonium salt and 80 g of polyacrylic acid In the water of the polymer dispersant compounded by salt polymer, the formed suspension is pumped into a three-stage pipeline high-shear dispersing emulsifier at a flow rate of 2.5t / h for grinding, and the obtained slurry is centrifugally dehydrated and dried. Obtain aramid pulp-like fibers with a length distribution of 2.0±0.4mm and a specific surface area of ​​11±2m 2 / g.

example 3

[0027] 150g of the PBO spinning test product was punched into short-cut fibers with a length of 3-5mm on a punching machine with a nominal force of 63 tons, dispersed in 20kg of water, and ground for 8min by a double-disk refiner, and the obtained slurry was centrifuged and dehydrated. After drying, PBO pulp-like fibers are obtained, the length distribution is 2.0±0.4mm, and the specific surface area is 9±2m 2 / g.

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Abstract

The invention discloses a manufacture method of organic pulp stage fiber with high performance and high temperature-resistant performance. The invention uses the bavella silk, spinning silk and other out materials, textiles, braiding leftover bits and pieces and wasting materials of high temperature-resistant and high performance organic fiber as raw materials, the high temperature-resistant and high performance organic fiber such as aramid fiber and PBO fiber. The raw materials are cut into the short fiber with the length of 2-10 mm, the fiber form the suspending liquid evenly with 0. 1-8 wt% using the dispersants, then the suspending liquid is pumped into high shearing equipments at the flow ratio of 2-10 t / h to grinding, and the pulp stage fiber is prepared (shortly aramid fiber pulp or PBO pulp, etc. ) The high temperature-resistant and high performance organic pulps can replace the asbestos in many fields of friction, sealing materials, papermaking and so on. The high temperature-resistant and high performance organic pulps in the manufacture method has higher fibrillating degree, better dispersity and more uniform structure, and the manufacture method has higher production efficiency.

Description

Technical field: [0001] The invention belongs to the technical field of chemical fiber manufacturing. The invention relates to a method for manufacturing high-temperature-resistant and high-performance organic pulp-like fibers, in particular to a method for manufacturing high-temperature-resistant and high-performance organic pulp-like fibers by using waste fibers such as aramid fiber and PBO as raw materials. Background technique: [0002] Aramid, PBO and other high-temperature-resistant high-performance organic pulp fibers have excellent comprehensive properties such as good heat resistance, high oxygen resistance index, large specific surface area, good toughness, high modulus, and wear resistance, so they are used in advanced composite materials. has irreplaceable advantages. [0003] The main production method of high-temperature-resistant and high-performance organic pulp-like fibers such as aramid fiber and PBO is (such as USP3869430, USP4703103): using high-molecula...

Claims

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Application Information

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IPC IPC(8): D01D5/26
Inventor 尤秀兰尤松陈洪新
Owner SHANGHAI LABON TECHNICAL FIBER CO LTD
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