CN204982170U - Direct fabrics are antibiotic, production system of flame -retardant polyester woollike fiber endless tow - Google Patents

Abstract

The utility model provides a production system for directly spinning antibacterial and flame-retardant polyester wool filament bundles, including a polymerization system, a spinning system and a finishing system for the filaments; the polymerization system includes an esterification kettle, a conveying Pumps, oligomer pipelines, blending tanks, metering injection pumps, three-way valves, pre-condensation tanks, final polycondensation tanks, and discharge pumps. The esterification tanks are connected to the delivery pump in sequence, and the delivery pump passes through the oligomer pipeline Connected to one inlet of the three-way valve, the blending tank is connected to the injection pump in sequence, the injection pump is connected to the other inlet of the three-way valve through a pipeline, and the outlet of the three-way valve is connected to the pre-condensation tank, final poly-condensation tank, discharge pump, spinning The spinning boxes of the silk system are sequentially connected by pipelines. The production system of the utility model is a direct spinning production system. A branch line for adding other additives is set on the oligomer pipeline. The branch line is composed of a blending kettle and a metering injection pump, which can accurately measure the components of the added additives.

Description

Production system for direct spinning antibacterial and flame retardant polyester wool filament bundles

technical field

The utility model relates to a production system for directly spinning antibacterial and flame-retardant polyester wool filament bundles, which belongs to the technical field of synthetic fibers.

Background technique

The research and development and production of antibacterial fibers are produced to meet the needs of the market. There are researches and reports on this aspect at home and abroad. The history of antibacterial fiber textiles is developed from antibacterial finishing technology. As early as in ancient Egypt, people applied antibacterial technology to the preservation of mummies. In 1935, Germany used quaternary ammonium salts to treat military uniforms, which avoided the secondary infection of the wounded. With the development of the times, the rapid development of synthetic fibers, especially polyester fibers, has greatly enriched the market for fibers and textiles. Antibacterial products such as antibacterial polypropylene fiber, antibacterial polyester, and antibacterial acrylic fiber have appeared, and a variety of antibacterial agents have appeared at the same time. Antimicrobial agents can be divided into inorganic and organic. Among them, inorganic antibacterial agents are mainly metal inorganic salts and antibacterial zeolites with antibacterial effects. Organic antibacterial agents mainly include phenols, guanidines, and quaternary ammonium salts, and inorganic antibacterial agents are used to process antibacterial modified fibers. The most commonly used antibacterial agents in the post-finishing method are quaternary ammonium salt antibacterial agents. Because the processing process of this method is simple and feasible, it has been a commonly used method in antibacterial textiles for a long time. However, due to this method, the antibacterial active ingredient is attached to the surface of the fiber and fabric, and the durability is poor. In recent years, the production of antibacterial fibers by blending has gradually attracted people's attention. The antibacterial fiber produced by the blending method is mainly used in synthetic fibers produced by melt spinning such as polypropylene and polyester. Therefore, this type of antibacterial agent is required to have good thermal stability, mainly including metal copper, silver, zinc and their metal salts and oxides. In addition, the fibers produced by the blending method also use organic antibacterial agents with strong thermal stability. The antibacterial fiber produced by this method has more durable antibacterial properties than the fiber treated by the post-finishing method because the antibacterial agent is distributed inside the fiber. Compared with foreign countries, domestic research in this area develops later, and its industrialization is relatively slow. Relatively high processing costs, product quality is not very stable.

ZincZeolite (zinc zeolite) is an inorganic substance obtained from nature, which has antibacterial (mold, bacteria, virus) and deodorizing effects. It also has an antibacterial effect on viruses and bacteria that cause skin rashes in young children, helping to suppress rashes.

The bactericidal principle of zinc zeolite is to process zeolite particles to the nanometer level, and through ion exchange, zinc ions are embedded in "Zeolite" with a special structure that can maximize the antibacterial ability. After the generated electron current (EV) invades the inside of the bacterial cell, it will hinder its metabolism and destroy its cell wall, thereby decomposing and killing the bacteria. Zinc zeolite will not decompose over time, the electronic current will not decrease or increase, and it will repeatedly adsorb and kill bacteria, so its antibacterial and bactericidal effect is longer and lasting.

Phosphorus-based flame-retardant copolyester fiber is one of the few flame-retardant co-polyester fibers with superior performance in the world. It is stable, non-toxic, and has high-efficiency and long-lasting flame-retardant performance. Vinegar and blended flame retardant polyester are unmatched. At present, the popular flame-retardant polyester fibers in the world are all phosphorus-based copolymerized flame-retardant fibers. Famous European synthetic fiber companies began to develop copolymerized phosphorus-based flame-retardant monomers in the 1960s. These monomers are mainly phosphorus-containing compounds containing aromatic groups and dihydroxyl groups participating in copolymerization. Spinning is carried out to produce various series of flame-retardant polyester fibers, forming an industrialized production scale. In the past ten years in China, phosphorus-based flame-retardant fibers have been successfully developed and mass-produced mainly in the form of slice blending.

With the construction of urbanization and the improvement of the quality of life, it is an inevitable trend for synthetic fiber carpets to replace natural fiber carpets. At present, there are mainly nylon (nylon), polypropylene (propylene), polyacrylonitrile (acrylic), polyester (polyester), etc. type. The appearance and feel of chemical fiber carpets are similar to wool carpets. They are wear-resistant and elastic, and have the characteristics of anti-fouling and insect-proof. The price is lower than that of natural fiber carpets.

Carpets can be divided into tufted carpets, needle-punched carpets, machine-woven carpets, square carpets, knitted carpets, bonded carpets, static flocked carpets, etc. according to their weaving methods. Polyester wool-type filament bundles are mainly used in tufted carpets, machine-woven carpets, carpet tiles, knitted carpets, bonded carpets, etc.

Foreign countries usually attribute the carpet manufacturing industry to the technical textile industry. Polyester fiber carpets are used for flooring in public places, which have functions such as sound absorption and heat preservation. ; And household carpets, car carpets need more health requirements such as antibacterial.

The additional special functions of synthetic fiber carpets generally adopt dyeing and finishing methods. For carpets made of polyester fibers, the flame retardants of the usual phosphorus-based flame-retardant finishing will cause adverse effects on the environment during the finishing process. It is mainly reflected in the high cost of cleaning phosphorus-containing sewage and the unsatisfactory effect. It will still cause adverse effects of phosphorus enrichment on the natural water system, and the flame-retardant effect is not long-lasting. After repeated washings, the flame-retardant effect will decline. Phosphorus-based flame-retardant copolyester spinning can make up for the defects of fabric finishing, but the energy consumption of traditional flame-retardant and antibacterial chip spinning or physical blending spinning is significantly higher than that of direct spinning, and the manufacturing cost even exceeds that of post-processing. The cost of finishing. The antibacterial function of fabrics is reflected in the traditional method of finishing after dyeing and finishing, which will also bring environmental protection pressure to the finishing process, and the relative antibacterial function will be weakened with the cleaning of the fabric. It is not competitive in terms of sex and manufacturing cost.

Utility model content

In order to overcome the deficiencies of the prior art, the utility model provides a production system for directly spinning antibacterial and flame-retardant polyester wool filament bundles.

The technical solution adopted by the utility model is: a production system for directly spinning antibacterial and flame-retardant polyester wool-type filament bundles, including a polymerization system, a spinning system and a finishing system for tows;

The polymerization system includes an esterification tank, a transfer pump, an oligomer pipeline, a blending tank, a metering injection pump, a three-way valve, a precondensation tank, a final polycondensation tank, and a discharge pump, and the esterification tank is connected to the delivery pump in sequence , the delivery pump is connected to an inlet of the three-way valve through the oligomer pipeline, the deployment tank is connected to the injection pump in turn, the injection pump is connected to the other inlet of the three-way valve through the pipeline, and the outlet of the three-way valve is connected to the precondensation tank , the final polycondensation tank, and the discharge pump are connected sequentially through pipelines, and then connected to the spinning box of the spinning system through pipelines;

The spinning system includes a spinning box connected in sequence by a conveyor belt, a blower, an annular lip oiler, a jet atomizer, a traction and feeding system, a first silk barrel, and the first silk barrel and The impregnation tanks of the tow finishing system are connected by conveyor belts;

The tow finishing system includes a dipping tank sequentially connected by a conveyor belt, a first stretching machine, a dipped spray water bath, a second stretching machine, a steam heating box, a third stretching machine, surface treatment facilities, steam Heating facility, spraying facility, mechanical crimping device, hot air circulation facility, spraying facility and second silk barrel.

Further, the precondensation reactor is an upflow precondensation reactor.

The production system of the utility model is a direct spinning production system. A branch line for adding other additives is set on the oligomer pipeline. The branch line is composed of a mixing tank and a metering injection pump, which can accurately measure the components of the added additives. The production process of this production system is relatively simple, and the quality of continuous production products is stable.

Description of drawings

Fig. 1 is the structure schematic diagram of the polymerization system of the production system of the direct spinning antibacterial, flame-retardant polyester wool type fiber filament bundle of the present invention.

Fig. 2 is a structural schematic diagram of the spinning system and the tow finishing system of the production system of direct spinning antibacterial and flame-retardant polyester wool-type fiber filament bundles of the present invention.

The utility model is described further below.

detailed description

Example 1

The production system for directly spinning antibacterial and flame-retardant polyester wool-type filament bundles includes a polymerization system, a spinning system and a finishing system for tows;

The polymerization system includes an esterification kettle 1, a delivery pump 2, an oligomer pipeline 3, a blending kettle 4, a metering injection pump 5, a three-way valve 6, an upflow precondensation kettle 7, a final polycondensation kettle 8, and a discharge pump 9 , the esterification kettle 1 is connected to the delivery pump 2 in sequence, the delivery pump 2 is connected to an inlet of the three-way valve 6 through the oligomer pipeline 3, the preparation kettle 4 is connected to the injection pump 5 in sequence, and the injection pump 5 It is connected to the other inlet of the three-way valve 6 through a pipeline, and the outlet of the three-way valve 6 is connected to the upflow pre-condensation kettle 7, the final polycondensation kettle 8, and the discharge pump 9 in sequence through the pipeline, and then through the pipeline and the spinning of the spinning system 10 The box body 11 is connected;

The spinning system includes a spinning box 11, a blowing device 12, an annular lip oiler 13, a jet atomizer 14, a traction and feeding system 15, a first silk barrel 16, which are sequentially connected by a conveyor belt, The first silk barrel 16 is connected with the dipping tank 17 of the tow finishing system through a conveyor belt;

The tow finishing system includes a dipping tank 17, a first stretching machine 18, a dipped spray water bath 19, a second stretching machine 20, a steam heating box 21, and a third stretching machine 22, which are sequentially connected by a conveyor belt. , surface treatment facility 23, steam heating facility 24, spraying facility 25, mechanical crimping device 26, hot air circulation facility 27, spraying facility 28 and the second silk barrel 29.

Polymerization process: as shown in Figure 1, quantitative ethylene glycol and purified terephthalic acid are prepared from the slurry blending tank to form a slurry with excess ethylene glycol, which is continuously transported to the esterification tank 1. Glycol reacts with terephthalic acid to generate a bishydroxyethyl terephthalate (BHET)-based oligomer solution, which is transported by the delivery pump 2 from the oligomer pipeline 3 through the three-way valve 6 to the upflow pre-condensation tank 7. The outlet port of the three-way valve 6 is negative pressure.

Phosphorus-based flame-retardant monomer (DDP or CEPPA) is blended in a jacketed temperature-controllable blending kettle 4 with ethylene glycol as a solvent, and is injected by a metering injection pump 5 through a three-way valve 6 to the pipeline in front of the pre-condensation kettle 7 In , the injection volume is controlled according to the real-time operation output and the target flame retardant required for the final polymer.

The esterified oligomer containing phosphorus-based flame-retardant monomer enters the pre-condensation kettle 7 from the bottom of the pre-condensation kettle 7, and the material is pushed upward by ethylene glycol steam, and the phosphorus-based flame-retardant monomer reacts with BHET to form a phosphorus-containing block low molecular weight Copolymer, the material has experienced a temperature gradient change during the process from the bottom of the kettle to the top of the kettle, and the reaction by-product water and excess ethylene glycol are continuously removed to form a pre-condensation melt with a certain degree of polymerization.

Zinc zeolite antibacterial ultrafine powder has a certain solubility in ethylene glycol solution, and KTPP is added to prevent the "self-aggregation" of the ultrafine powder. 4 to deploy. Together with the above-mentioned flame retardant monomer, it is injected into the oligomer pipeline 3 by the metering injection pump 5 through the three-way valve 6, and enters the bottom of the pre-condensation tank 7. Zinc zeolite antibacterial ultrafine powder does not participate in the macromolecular chain of pre-condensation and final polycondensation Growth reaction, but can be very uniformly dispersed in the polycondensate melt.

The precondensation melt enters the final polycondensation kettle 8 from the top of the precondensation kettle 7 relying on its own weight through the melt pipeline. Under dynamic stirring, relying on a high vacuum method, water and small molecules (mainly alcohols and aldehydes) are continuously removed. After reaching the target viscosity (molecular weight), the polymer melt is sent to the spinning process 10 by the discharge pump 9 .

The production process of direct spinning filament bundle: as shown in Figure 2, the phosphorus-based flame-retardant copolymer melt containing ultrafine antibacterial zinc zeolite is transported to the spinning box 11 by the melt pipeline, and is filtered and boosted by the spinning assembly After extruding through the microholes on the spinneret, the cooling blowing device 12 cools the filaments (bundles) with the high-speed cooling airflow from inside to outside perpendicular to the direction of the thin flow of the melt. The oiler 13 is in continuous contact (immersion type) to carry out the antibacterial treatment on the fiber surface for the first time, and the fiber bundle is immersed in the spinning oil solution containing antibacterial organic solvent and conventional antistatic, increasing cohesion and lubricating effect and passing through continuously, by The jet atomizer 14 performs a second surface antibacterial treatment on the high-speed tow, and the tow falls into the first silk barrel 16 through the traction and feeding system 15 .

Lead the tows in the tens of first silk barrels 16 to the cluster frame, arrange them neatly and then immerse them in the dipping tank 17, carry out the third fiber surface antibacterial treatment on the tows, and the solution in the tank is made of stretching oil (antistatic agent) , lubricant) antibacterial agent, pure water to form an emulsion.

The tow is mechanically stretched by the speed difference between the first stretching machine 18 and the second stretching machine 20. The stretching ratio is controlled at 2.5 to 3.8 times, and the tow is dipped between the two stretching equipment. The liquid medium of the spray water bath 19 is heat-preserved and heat-dissipated, and at the same time, the fourth antibacterial finishing is carried out on the fiber surface. When the tow is in motion, the nozzle above the tow immersed in the liquid sprays out a high-speed liquid flow to improve the heat exchange efficiency. .

The tow is stretched for the second time by the speed difference between the third stretching machine 22 and the second stretching machine 20, and the tow is heated by the steam heating box 21, and the temperature of the roll surface of the third stretching machine reaches the fiber macromolecule Crystallization temperature, and 23 pairs of tow surfaces are sprayed by spray-type tow surface treatment facilities. The spray agent is composed of antistatic agent, lubricant and antibacterial agent, and the fifth surface treatment is carried out to the tow at high temperature. Its concentration increased by 5 to 10 times compared with the previous 4 times. And under the condition of relatively high surface temperature of the tow, the binding fastness of the antibacterial surface treatment agent to the fiber surface increases.

After the fifth surface treatment of the tow, the surface temperature drops to about 100°C. In order to make the fiber tow have a good curled appearance, the tow is heated under the condition of spraying steam in the steam heating facility 24 to improve the softness of the fiber. In order to facilitate the mechanical crimping device 26, the tow is subjected to the sixth surface treatment before crimping, and the spray facility 25 is also used to make the oil containing antibacterial agent uniform on the fiber surface through mechanical crimping.

After crimping, the tow is passed through the hot air circulation facility 27, and the tow is dried under low tension conditions to remove the moisture on the surface of the fiber, so that the moisture content of the fiber is less than 0.5%wt, and then the seventh tow surface treatment is performed. Spray (fog) type facility 28, antibacterial finishing is carried out to fiber surface, and its spray (fog) amount is determined by the speed of tow stretching process and the actual moisture content of fiber surface, to ensure that tow falls into filament The concentration of the antibacterial finishing agent before the bundle wool top is made the second silk-filled bucket 29 is consistent.

Claims (2)

1. A production system for direct spinning antibacterial and flame-retardant polyester wool filament bundles, including a polymerization system, spinning system and tow finishing system; The polymerization system includes an esterification tank, a transfer pump, an oligomer pipeline, a blending tank, a metering injection pump, a three-way valve, a precondensation tank, a final polycondensation tank, and a discharge pump, and the esterification tank is connected to the delivery pump in sequence , the delivery pump is connected to an inlet of the three-way valve through the oligomer pipeline, the deployment tank is connected to the injection pump in turn, the injection pump is connected to the other inlet of the three-way valve through the pipeline, and the outlet of the three-way valve is connected to the precondensation tank , the final polycondensation tank, and the discharge pump are connected sequentially through pipelines, and then connected to the spinning box of the spinning system through pipelines; The spinning system includes a spinning box connected in sequence by a conveyor belt, a blower, an annular lip oiler, a jet atomizer, a traction and feeding system, a first silk barrel, and the first silk barrel and The impregnation tanks of the tow finishing system are connected by conveyor belts; The tow finishing system includes a dipping tank sequentially connected by a conveyor belt, a first stretching machine, a dipped spray water bath, a second stretching machine, a steam heating box, a third stretching machine, surface treatment facilities, steam Heating facility, spraying facility, mechanical crimping device, hot air circulation facility, spraying facility and second silk barrel. 2. The production system of direct spinning antibacterial and flame-retardant polyester wool-type filament bundles according to claim 1, characterized in that: the precondensation kettle is an upflow precondensation kettle.