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Regenerated nylon 6 fiber manufacturing process
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A manufacturing process and nylon technology, applied in the field of regenerated nylon 6 fiber manufacturing process, can solve the problems of difficulty in purifying nylon 6, pollution, waste of resources and the environment, etc.
Inactive Publication Date: 2021-05-28
金华市广拓新材料科技有限公司
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Abstract
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Problems solved by technology
[0002] Nylon 6 will inevitably produce a large amount of leftovers and wastes in the production process. These leftovers and wastes contain many additives that are difficult to separate. At present, these wastes are generally used as fuel, resulting in waste of resources and environmental pollution. Thereby need to provide a kind of method that can regenerate nylon 6
[0003] Many recycling methods for nylon 6 waste are also given in the prior art, but because nylon 6 is difficult to dissolve in commonly used solutions, it is difficult to purify nylon 6 from waste.
Method used
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Embodiment 1
[0026] Regenerated nylon 6 fiber manufacturing process, it comprises the following steps:
[0027] Step 1, pulverizing the nylon 6 waste;
[0028] Step 2. In a closed stirring container, add a catalyst and a mixed solvent of ethanol and dichloroethane, and stir and dissolve at a temperature of 100° C. for 4 hours;
[0029] Wherein, the catalyst is a mixture of 30% sodiumchloride and 70% ferricchloride, and the mass ratio of catalyst to nylon 6 waste in this embodiment is 0.2%.
[0030] In addition, in this embodiment, the mixed solvent is a mixture of 60% ethanol and 40% dichloroethane, and the mass ratio of the mixed solvent to nylon 6 waste is 1:1.
[0031] In this embodiment, the mixed catalyst composed of sodiumchloride and ferric chloride is used, and then the mixed solvent composed of ethanol and dichloroethane is used to realize the dissolution of nylon 6 waste. Dissolution, and the amount of wastewater discharged after dissolution is very small, which can effectiv...
Embodiment 2
[0041] Regenerated nylon 6 fiber manufacturing process, it comprises the following steps:
[0042] Step 1, pulverizing the nylon 6 waste;
[0043] Step 2. In a closed stirring container, add a catalyst and a mixed solvent of ethanol and dichloroethane, and stir and dissolve at a temperature of 150° C. for 5 hours;
[0044] Wherein, the catalyst is a mixture of 30% sodium chloride and 70% ferric chloride, and the mass ratio of catalyst to nylon 6 waste in this embodiment is 0.4%.
[0045] In addition, in this embodiment, the mixed solvent is a mixture of 60% ethanol and 40% dichloroethane, and the mass ratio of the mixed solvent to nylon 6 waste is 1:1.
[0046] Step 3, after the dissolution, filter the undissolved solids in the solution;
[0047] Step 4, place the nylon 6 in the filtered solution in a crystallization tank to crystallize at a certain temperature, and the temperature in the crystallization tank is 45°C, cool and crystallize into a nylon 6 solid;
[0048] Step...
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Abstract
The invention relates to a fiber manufacturing process, in particular to a regenerated nylon 6 fiber manufacturing process. The regenerated nylon 6 fiber manufacturing process comprises the following steps of 1, crushing nylon 6 waste; 2, adding a catalyst and a mixed solvent of ethanol and dichloroethane; 3, filtering undissolved solids in the solution after the dissolution is finished; 4, cooling and crystallizing the nylon 6 in the filtered solution at a certain temperature to form a nylon 6 solid; 5, drying the nylon 6 solid in a drying oven at 100-120 DEG C for 3-4 hours until the water content is less than 5%; 6, adding an additive to obtain a mixture; and 7, performing melt spinning to obtain the regenerated nylon 6 fiber. The regenerated nylon 6 fiber is prepared from the nylon 6 waste material, so that the nylon 6 waste material is recycled, and resource waste and environmental pollution are fully avoided.
Description
technical field [0001] The invention relates to a fiber manufacturing process, in particular to a regenerated nylon 6 fiber manufacturing process. Background technique [0002] Nylon 6 will inevitably produce a large amount of leftovers and wastes in the production process. These leftovers and wastes contain many additives that are difficult to separate. At present, these wastes are generally used as fuel, resulting in waste of resources and environmental pollution. Therefore need to provide a kind of method that can regenerate nylon 6. [0003] Many recycling methods for nylon 6 waste are also given in the prior art, but since nylon 6 is difficult to dissolve in commonly used solutions, it is difficult to purify nylon 6 from waste. Contents of the invention [0004] Aiming at the problems in the prior art about the manufacture of regenerated nylon 6 fibers, the present invention provides a regenerated nylon 6 fiber manufacturing process. [0005] In order to solve the a...
Claims
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Application Information
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