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Raw material blending method and blending device for high-speed spinning nylon chips

A nylon slicing and high-speed spinning technology is applied in the field of high-speed spinning nylon slicing raw material blending and its blending device, which can solve problems such as instability and achieve the effects of good practical performance, simple production process and reduced impurity content.

Active Publication Date: 2018-08-31
HANGZHOU JUHESHUN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a high-speed spinning nylon chip raw material co-melting method and a co-melting device to solve the problem of instability caused by organic impurities in the existing caprolactam

Method used

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  • Raw material blending method and blending device for high-speed spinning nylon chips
  • Raw material blending method and blending device for high-speed spinning nylon chips

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The co-integration method of high-speed spinning nylon chip raw materials, comprising flaky caprolactam with a thickness of 4mm, powdered caprolactam and liquid caprolactam with a particle size of 250 meshes, comprises the following steps in turn:

[0026] Step 1: Divide caprolactam in flakes, powdered caprolactam and liquid caprolactam evenly into several feeding batches according to the daily production amount;

[0027] Step 2: Put the batches of flake caprolactam and powder caprolactam in step 1 into the melting pot to melt into liquid caprolactam. The temperature in the melting pot is 80°C, and nitrogen gas is introduced into the melting pot , the melting time is 4h, and the mass ratio of flake caprolactam and powdery caprolactam is 4:1;

[0028] Step 3: Add the liquid caprolactam in step 1 to the melting pot in step 2 for mixing, and the mixing time is 4 hours, and the mass ratio of liquid caprolactam to the melted liquid caprolactam in step 2 is 3 :4;

[0029] S...

Embodiment 2

[0032] As described in Example 1, the high-speed spinning nylon chip raw material blending method, this example has the following differences:

[0033] Including flake caprolactam with a thickness of 5mm, powdered caprolactam with a particle size of 300 meshes and liquid caprolactam, including the following steps in turn:

[0034] Step 1: Divide caprolactam in flakes, powdered caprolactam and liquid caprolactam evenly into several feeding batches according to the daily production amount;

[0035] Step 2: Put the batches of flake caprolactam and powder caprolactam in step 1 into a melting pot to melt into liquid caprolactam. The temperature in the melting pot is 90°C, and nitrogen gas is introduced into the melting pot , the melting time is 2h, and the mass ratio of flake caprolactam and powdery caprolactam is 3:2;

[0036] Step 3: Add the liquid caprolactam in step 1 to the melting pot in step 2 for mixing, and the mixing time is 5 hours, and the mass ratio of liquid caprolac...

Embodiment 3

[0040] Like the high-speed spinning nylon slice raw material blending method described in Embodiments 1 and 2, this embodiment has the following differences:

[0041] Including flake caprolactam with a thickness of 4.5mm, powdered caprolactam with a particle size of 280 mesh and liquid caprolactam, including the following steps in turn:

[0042] Step 1: Divide caprolactam in flakes, powdered caprolactam and liquid caprolactam evenly into several feeding batches according to the daily production amount;

[0043] Step 2: Put the batches of flake caprolactam and powder caprolactam in step 1 into a melting pot to melt into liquid caprolactam. The temperature in the melting pot is 85°C, and nitrogen gas is introduced into the melting pot , the melting time is 3h, and the mass ratio of caprolactam in flake form and powdery caprolactam is 3:1;

[0044] Step 3: Add the liquid caprolactam in step 1 into the melting pot in step 2 for mixing, and the mixing time is 6 hours, and the mass...

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Abstract

The invention relates to a high-speed nylon spinning slice raw material co-melting method.Flaky caprolactam, powdered caprolactam and liquid-state caprolactam are sequentially processed through the following steps of material dividing, melting, mixing, test analyzing and storing for using and co-melted through a co-melting device comprising a rack and a melting pot.The co-melting method has the advantages that flaky caprolactam, powdered caprolactam and liquid-state caprolactam are prepared into high-speed nylon spinning slices through the co-melting method including the steps of material dividing, melting, mixing, test analyzing and storing for using, and the prepared high-speed nylon spinning slices have the following quality indexes that the potassium permanganate absorption value is smaller than 2, the content of volatile alkali is less than 0.3, the 290-nm absorbance is smaller than 0.03 and the acidity is smaller than 0.05 or the alkalinity is smaller than 0.1, can meet the requirements of chemical fiber and plastic product industry and are good in practical performance; in addition, a production technology in the production method is simple, and the content of impurities in produced caprolactam can be decreased.

Description

technical field [0001] The invention relates to a co-melting method and a co-melting device for high-speed spinning nylon chip raw materials. Background technique [0002] Caprolactam is one of the important organic chemical raw materials. Its main purpose is to generate polyamide slices (usually called nylon-6 slices, or nylon-6 slices) through polymerization, which can be further processed into nylon fibers, engineering plastics, and plastic films. The existing In the production process of caprolactam, due to the existence of organic impurities, the post-production caprolactam is unstable. The existence of these impurities will have a strong impact on the rate of polymerization and the polymerization reaction in the later stage, which will easily affect the strength, heat resistance and For the dyeing effect, the existing raw material cannot meet the needs of high-quality slices. Contents of the invention [0003] The technical problem to be solved by the present invent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G69/16
CPCC08G69/16
Inventor 李晓光沈红燕丁光军周海
Owner HANGZHOU JUHESHUN NEW MATERIAL CO LTD