Method for producing functional nylon-6 slice

A production method and functional technology, applied in the field of nylon 6 production, can solve the problems of extremely high raw material requirements, raw material consumption, and few additives, and achieve the effects of low content, short stop time, and good compatibility

Inactive Publication Date: 2010-12-08
GUANGDONG XINHUI MEIDA NYLON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the downstream use, if masterbatch is used, especially in the production of fibers with high requirements, it is often necessary to modify the conventional production equipment and install more expensive metering injection equipment.
If the blending of masterbatch and chips is used, there will be disadvantages such as uneven mixing and layering.
[0004] The continuous polymerization method of nylon 6 currently used is to add additives before polymerization, and the functional chips produced by the method of polymerization addition are easy to disperse the additives evenly, and do not need to be reprocessed by the screw, but its limitations are relatively large. The requirements for raw materials are extremely high when adding them. It is required that the raw materials added at this time must wi

Method used

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  • Method for producing functional nylon-6 slice
  • Method for producing functional nylon-6 slice

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Caprolactam and molecular weight regulator acetic acid are added together at a rate of 21.384kg / h into the polymerization tube 1 continuously, the polymerization temperature is 245-275°C, and the melt flowing out of the bottom of the polymerization tube is metered into the twin-screw extruder 9 through the melt pump 2 In the process, 20kg of nano zinc oxide silver-loaded powder is added to the batching tank 4 with 80kg of caprolactam at 80°C through the feeding hopper 3, stirred and mixed evenly to form a rough mixture, and the rough mixture is input into the stirring and grinding machine 6 through the screw pump 5 , the grinder is kept at 70°C, the ground material is placed in a stirred intermediate tank 7, and then metered and transported to the twin-screw extruder 9 by the plunger pump 8 at a speed of 1kg / h, and the two strands of material are mixed by the twin-screw, Extruded after dispersion, pressurized by melt pump 2, filtered by melt filter 10, and cut into pelle...

Embodiment 2

[0033] Caprolactam and molecular weight regulator acetic acid are added together at a rate of 21.168kg / h into the polymerization tube 1 continuously, the polymerization temperature is 245-275°C, and the melt flowing out of the bottom of the polymerization tube is metered into the twin-screw extruder 9 through the melt pump 2 In the process, 20kg of medical stone powder is added to the batching tank 4 with 80kg of caprolactam insulated at 80°C through the feeding hopper 3, stirred and mixed evenly to form a rough mixture, which is input into the stirring grinder 6 through the screw pump 5, and ground The machine is kept at 70°C. The ground material is placed in the intermediate tank 7 with stirring, and then is metered and transported to the twin-screw extruder 9 by the plunger pump 8 at a speed of 2kg / h. The two strands of material are mixed and dispersed by the twin-screw. Extruded, pressurized by melt pump 2, filtered by melt filter 10, and cut into pellets. The diced produc...

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Abstract

The invention relates to a method for producing a functional nylon-6 slice. The method comprises the following steps of: (a) dispersing functional powder in liquid caprolactam to form a functional powder dispersion liquid; (b) metering the functional powder dispersion liquid by using a liquid pump and conveying the dispersion liquid to an extruder; (c) metering a product polymerized with a conventional hydrolysis and ring-opening polymerization method by using a melt pump and conveying the product to the extruder; (d) extruding and granulating after the functional powder dispersion liquid of the step (b) and the polymerized product of the step (c) are mixed by the extruder; and (e) extracting and drying granules to prepare a product. Compared with a traditional mode, the invention has the advantages of flexible production variety switching, less production change consumption, fine granularity and good dispersity of the functional powder in the chip product, low degradation of nylon molecule and stable quality.

Description

technical field [0001] The invention relates to a production method of functional nylon 6 chips, belonging to the field of nylon 6 production. Background technique [0002] At present, many downstream products of nylon 6, including silk, film and plastic, can be functionalized by adding functional ingredients, such as antibacterial, antistatic, far-infrared emission, anti-ultraviolet, coloring, etc. The most common method is to first Part of the nylon 6 resin is made into a masterbatch, which is added and mixed during molding (spinning, injection molding, extrusion). Antibacterial agents and far red powder are mainly added in this way. Also, it is added before polymerization. Typical additives include titanium dioxide used as a matting agent. Certain varieties such as fabrics can also be surface treated (including dyed) to add functionality. [0003] The masterbatch method has the advantages of being simple, convenient, easy to replace, easy to clean, and has good dispersi...

Claims

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Application Information

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IPC IPC(8): B29B7/80B29B9/06B29B13/06B29K77/00
Inventor 梁伟东毛新华宋明简锦炽谌继宗陈欣许爱林
Owner GUANGDONG XINHUI MEIDA NYLON
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