CN112108097B

CN112108097B - Novel tubular tackifying equipment

Info

Publication number: CN112108097B
Application number: CN202010950122.2A
Authority: CN
Inventors: 冯新星; 张华�; 梁高勇
Original assignee: Institute of Quartermaster Engineering Technology Institute of Systems Engineering Academy of Military Sciences
Current assignee: Institute of Quartermaster Engineering Technology Institute of Systems Engineering Academy of Military Sciences
Priority date: 2020-09-10
Filing date: 2020-09-10
Publication date: 2022-05-24
Anticipated expiration: 2040-09-10
Also published as: CN112108097A

Abstract

The invention discloses novel tubular tackifying equipment. The tubular tackifying equipment comprises a tackifying kettle; a plurality of charging bins are arranged in the tackifying kettle, and the charging bins are straight pipelines; and a plurality of heating pore channels are arranged on the outer wall of the charging bin along the axial direction of the charging bin and used for placing heat conducting wires or heat conducting oil. The invention enables the polymer melt to be fully and uniformly heated in each level of charging bin by arranging the distributed charging bins, and enables the cross sections of all parts to have the same temperature basically, thereby ensuring that the tackifying process of the polymer in the device is basically consistent. The tackifying equipment is not only suitable for tackifying polyamide, but also suitable for other macromolecules. The charging bin of the novel tubular tackifying equipment is reasonable in design, so that a polymer melt is uniformly heated, the tackifying process is stable, the tackifying time is saved by more than 20-40%, and the viscosity uniformity error is within 5%.

Description

Novel tubular tackifying equipment

Technical Field

The invention relates to novel tubular tackifying equipment, and belongs to the field of chemical fiber equipment.

Background

Solid-phase tackifying, also called solid-phase polycondensation, is characterized in that during tackifying, high molecules undergo polycondensation reaction in a solid state, thereby increasing the molecular weight. The method aims to improve the spinnability of spinning macromolecules. At present, a drum method is mostly adopted for tackifying equipment, and the problems of long tackifying time, uneven viscosity, uneven subsequent spinning and the like are caused due to the problems of uneven heating, large particle damage, much ash and the like in the method. It is therefore desirable to provide a new viscosity increasing device.

Disclosure of Invention

The invention aims to provide tubular tackifying equipment, which is used for uniformly heating and fully reacting tackifying particles in a small space through the tubular equipment so as to achieve the aim of tackifying and solve the technical problems that the particle damage is large and the ash content is high to cause the subsequent high-molecular spinning difficulty due to low tackifying speed or non-uniform tackifying in the prior art.

The pipe type tackifying equipment provided by the invention comprises a tackifying kettle; the charging bin is a straight pipeline;

and a plurality of heating pore channels are arranged on the outer wall of the charging bin along the axial direction of the charging bin and used for placing heat conducting wires or heat conducting oil.

In the tubular tackifying equipment, the diameter of the charging bin is 0.2-0.4 m.

In the tubular tackifying equipment, the cross section of the charging bin is circular, square, hexagonal or triangular, so that the problem of material accumulation of the polymer melt in the pipeline can be reduced when the cross section of the charging bin is circular, and the temperature difference between the center and the edge of the polymer melt can be reduced when the cross section of the charging bin is square, hexagonal or triangular.

In the tubular tackifying equipment, 5-10 charging bins are arranged in the tackifying kettle.

In the tubular tackifying device, the heating pore channels are uniformly distributed on the outer wall of the charging bin.

The invention enables the polymer melt to be fully and uniformly heated in each level of charging bin by arranging the distributed charging bins, and enables the cross sections of all parts to have the same temperature basically, thereby ensuring that the tackifying process of the polymer in the device is basically consistent.

The tackifying equipment is not only suitable for tackifying polyamide, but also suitable for other polymers.

The invention has the following beneficial effects:

the charging bin of the novel tubular tackifying equipment is reasonable in design, so that a polymer melt is uniformly heated, the tackifying process is stable, the tackifying time is saved by more than 20-40%, and the viscosity uniformity error is within 5%.

Drawings

FIG. 1 is a schematic view of the construction of a tubular tackifying apparatus of the present invention.

FIG. 2 is a sectional view of a loading bin of the tubular viscosifying apparatus of the present invention.

The respective symbols in the figure are as follows:

1 tackifying kettle, 2 charging bin and 3 heating pore channel.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to the following embodiments.

As shown in figure 1, the structural schematic diagram of the pipe-type tackifying equipment provided by the invention comprises a tackifying kettle 1, wherein 5-10 charging bins 2 which are dispersedly arranged are arranged in the tackifying kettle 1, the charging bins 2 are straight pipelines with the diameter of 0.2-0.4 m, and the cross section of the charging bins can be circular, square, hexagonal or triangular. The outer wall of the charging bin 2 is uniformly provided with heating pore canals 3 along the axial direction of the charging bin, and the heating pore canals are used for placing heating wires or heating oil so as to heat the charging bin 2.

Examples 1,

Approximately two thirds of the polyamide (viscosity 2.01) were added per tube in a tubular viscosifying device for viscosification: 10 charging bins 2 are arranged in the tackifying kettle, the charging bins 2 are straight circular pipelines with the diameter of 0.2m, heating pore channels 3 are uniformly distributed at intervals outside the circumference of the charging bins, the tackifying temperature is 180 ℃, the tackifying time is 12h, and the performance of the tackified polyamide is shown in table 1.

Examples 2,

Approximately two thirds of the polyamide (viscosity 2.01) were added per tube in a tubular viscosifying device for viscosification: 10 charging bins 2 are arranged in the tackifying kettle, the charging bins 2 are straight triangular pipelines with the diameter of 0.4m, heating pore channels 3 are uniformly distributed at intervals outside the circumference of the charging bins, the tackifying temperature is 180 ℃, the tackifying time is 12h, and the performance of the tackified polyamide is shown in table 1.

Examples 3,

Approximately two thirds of the polyamide (viscosity 2.01) were added per tube in a tubular viscosifying device for viscosification: 8 charging bins 2 are arranged in the tackifying kettle, the charging bins 2 are straight hexagonal pipelines with the diameter of 0.3m, heating pore channels 3 are uniformly distributed at intervals outside the circumference of the charging bins, the tackifying temperature is 180 ℃, the tackifying time is 12h, and the performance of the tackified polyamide is shown in table 1.

Comparative example 1 (conventional adhesion promotion),

Adding polyamide (the viscosity is 2.01) into a tackifying kettle, and tackifying in a conventional tackifying kettle at 180 ℃ for 16h, wherein the performance of the tackified polyamide is shown in Table 1.

As can be seen from the data in Table 1, the tackifying process by adopting the tackifying equipment of the invention is stable, the tackifying time is saved by more than 33.3%, and the uniformity error of the viscosity is within +/-3%.

TABLE 1 tackifying material Properties

Claims

1. A tubular tackifying device comprises a tackifying kettle; a plurality of charging bins are arranged in the tackifying kettle, and the charging bins are straight pipelines;

a plurality of heating pore channels are arranged on the outer wall of the charging bin along the axial direction of the charging bin and used for placing heat conducting wires or heat conducting oil;

the diameter of the charging bin is 0.2-0.4 m;

the cross section of the charging bin is circular, square, hexagonal or triangular.

2. The tubular tackifying apparatus of claim 1, wherein: and 5-10 charging bins are arranged in the tackifying kettle.

3. The tubular tackifying apparatus of claim 1 or 2, wherein: the heating pore channels are uniformly distributed on the outer wall of the charging bin.