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Method for cleaning para-aramid staple fibers

A technology of para-aramid fiber and staple fiber, applied in the field of cleaning of para-aramid fiber, can solve the problems of long time and corrosion of cleaning liquid, and achieve the effect of enhancing oil removal ability, avoiding corrosion effect and shortening cleaning time.

Inactive Publication Date: 2020-01-03
AFCHINA CORP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to ensure the cleaning effect, immersion cleaning is generally used, which takes a long time for immersion cleaning, and for the short fibers on the surface of each bundle, if the immersion time is too long, the cleaning solution will have a certain corrosion effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: a kind of cleaning method of para-aramid staple fiber, comprises the following steps:

[0022] S1, the opening of the para-aramid staple fiber, take 100 parts by mass of the para-aramid staple fiber and place it in the cleaning tank, spray the atomized sodium hydroxide solution with a weight concentration of 3% evenly on the surface, spray the total The amount is 60 parts by mass;

[0023] S2. Add 100 parts by mass of deionized water to the cleaning pool in S1, then add 3 parts by mass of sodium dodecylbenzenesulfonate and 1 part by mass of triethanolamine, heat to 55° C., and let it sit for 15 minutes. Remove the solution in the cleaning pool;

[0024] S3. Add 150 parts by mass of deionized water to the cleaning tank for cleaning, and let off the water after 20 seconds;

[0025] S4, placing the para-aramid staple fibers cleaned in S3 in a Soxhlet extraction device, and cleaning with acetone;

[0026] S5. Drying the para-aramid staple fibers washed in S...

Embodiment 2

[0027] Embodiment 2: a kind of cleaning method of para-aramid staple fiber, comprises the following steps:

[0028] S1, the opening of the para-aramid staple fiber, take 100 parts by mass of the para-aramid staple fiber and place it in the cleaning tank, spray the atomized sodium hydroxide solution with a weight concentration of 3.5% evenly on the surface, spray the total The amount is 30 parts by mass;

[0029] S2. Add 150 parts by mass of deionized water to the cleaning tank in S1, then add 5 parts by mass of sodium dodecylbenzenesulfonate and 4 parts by mass of triethanolamine, heat to 60° C., and put Remove the solution in the cleaning pool;

[0030] S3. Add 200 parts by mass of deionized water to the cleaning tank for cleaning, and let off the water after 60 seconds;

[0031] S4, placing the para-aramid staple fibers cleaned in S3 in a Soxhlet extraction device, and cleaning with acetone;

[0032] S5. Drying the para-aramid staple fibers washed in S4 at a drying temper...

Embodiment 3

[0033] Embodiment 3: a kind of cleaning method of para-aramid staple fiber, comprises the following steps:

[0034] S1, the opening of the para-aramid staple fiber, take 100 mass parts of the para-aramid staple fiber and place it in the cleaning tank, spray the atomized sodium hydroxide solution with a weight concentration of 4% evenly on the surface, spray the total The amount is 15 parts by mass;

[0035] S2. Add 200 parts by mass of deionized water to the cleaning tank in S1, then add 10 parts by mass of sodium dodecylbenzenesulfonate and 10 parts by mass of triethanolamine, heat to 65° C., and put Remove the solution in the cleaning pool;

[0036] S3, add 300 parts by mass of deionized water to the cleaning tank for cleaning, and let off the water after 100s;

[0037] S4, placing the para-aramid staple fibers cleaned in S3 in a Soxhlet extraction device, and cleaning with acetone;

[0038] S5. Drying the para-aramid staple fibers washed in S4 at a drying temperature of ...

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PUM

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Abstract

The invention provides a cleaning method of para-aramid staple fibers, and relates to the technical field of cleaning of para-aramid staple fibers. According to the invention, an atomized sodium hydroxide solution is sprayed for opening treatment, then sodium dodecyl benzene sulfonate and triethanolamine are taken as main deoiling lotions, and a cleaning solution is heated; washing and drying areperformed by combining water washing with acetone. Compared with the prior art, the invention has the advantages that Opening treatment is carried out so that the bundled para-aramid staple fibers areseparated from one another, and a subsequent cleaning solution and single para-aramid staple fiber soaking and cleaning process is accelerated; a low-concentration alkaline solution is selected for opening treatment, atomization spraying is more uniform, short fibers are easy to contact, an alkaline atmosphere is provided for sodium dodecyl benzene sulfonate and triethanolamine, and combination with heating helps improve deoiling capacity of the cleaning solution; and finally, acetone is used for cleaning which is easy to volatilize, the drying time after cleaning is favorably shortened, thecleaning effect is guaranteed, and the total cleaning time is shortened.

Description

technical field [0001] The invention relates to the technical field of cleaning para-aramid staple fibers, in particular to a cleaning method for para-aramid staple fibers. Background technique [0002] Aramid fiber is a general term for aromatic polyamide fibers. It is divided into meta-aramid fiber and para-aramid fiber. Among them, para-aramid fiber has high strength, high modulus, high temperature resistance, acid and alkali resistance, and light weight. Such excellent physical and chemical properties, known as "synthetic steel wire", is an ideal raw material for protective and reinforcing materials. At present, the products mainly have three forms: chopped, pulp and precipitation, and are mostly used as composite reinforcement materials, brake pads, high-grade tire cords, aerospace and other structural materials; in general, para-aramid fibers are used in civil and It is widely used in aerospace and other military fields. [0003] In order to avoid static electricity ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/38D06B3/02D06L1/22D06M101/36
CPCD06B3/02D06L1/22D06M11/38D06M2101/36
Inventor 庹新林赵海林
Owner AFCHINA CORP CO LTD