KR20230014962A - Manufacturing method and device of basalt fiber yarn coated with flame retardant resin - Google Patents

Abstract

The present invention relates to a method for manufacturing flame-retardant resin-coated basalt fiber yarn and an apparatus thereof reinforcing insufficient elongation while supplementing flame retardancy and strength on the outer surface of basalt fiber yarn, which has excellent flame retardancy and strength but significantly poor elongation, in which, in particular, a flame-retardant sheet for various purposes can be manufactured by performing smooth resin coating through a pretreatment process when a flame-retardant resin is coated on the outer surface of the basalt fiber yarn and performing a weaving process using manufactured flame-retardant resin-coated basalt fiber yarn or cutting the basalt fiber yarn in the form of pellets and then using thermo-plasticity of the flame-retardant resin. As a means to solve the above problem, in the present invention, a volatile solvent is applied to the basalt fiber yarn before being coated with the flame-retardant resin so that bulky multiple strands of filament yarn are concentrated to reduce resistance to friction and at the same time, damage to the filament yarn is minimized, wherein the volatile solvent is fully volatilized just before the flame-retardant resin is coated to realize uniform and smooth coating. The basalt fiber yarn coated with the flame-retardant resin is cooled through a primary and a secondary cooling tank, dried through a primary and a secondary drying chamber, and then is manufactured by a means for winding the basalt fiber yarn on a bobbin in a winding unit.

Description

Manufacturing method and device of basalt fiber yarn coated with flame retardant resin}

The present invention relates to a method for manufacturing flame retardant resin-coated basalt fiber yarn and an apparatus for manufacturing the same, and in particular, by coating the flame retardant basalt fiber yarn with a thermoplastic and flame retardant resin, improving the touch feeling and elongation, which are weaknesses of basalt fiber yarn, and at the same time, The weaving property is further improved so that the weaving of the flame retardant fabric is smooth, and it is cut and thermally compressed in the form of pellets to be used for manufacturing various types of sheets with excellent flame retardancy.

In general, basalt fiber is obtained by melting basalt containing various minerals at a high temperature and then pulling it out in the form of a yarn, and can be manufactured at a lower cost than other fibers such as carbon or silica.

In addition, basalt fiber has almost no effect on environmental pollution, has no carcinogenicity, is harmless to living organisms, has excellent flame retardancy and heat resistance, and especially has high mechanical strength and excellent resistance to chemicals.

For this reason, basalt fiber is usefully used in various industrial fields such as environmental filters, concrete reinforcing fibers, high-strength composite materials, fire curtains, and welding clothes.

Looking at the prior art in which basalt fiber is applied to the industrial field, Patent No. 1268929 "Method for manufacturing basalt concave-convex fabric fabric and high-strength panel using basalt fiber yarn" (Patent Document 1) and Patent No. 10-2018519 "Basalt fiber composite material and manufacturing method thereof" (Patent Document 2) and the like.

Looking at the technical content of Patent Document 1, after applying any one of the adhesives made of cement paste or various resin liquids to both sides of the basalt fabric fabric, and then passing it between the concave-convex roller and the concave-convex plate material, the basalt is compressed. A method for manufacturing a basalt concave-convex fabric fabric in which concavo-convex parts protruding and concave on both sides of the fabric fabric are formed alternately and continuously, and using the basalt concave-convex fabric fabric, high strength that is lighter than iron plate, marble or tile, and stronger to provide a panel.

Looking at the technical content of Patent Document 2, one aspect of the present invention is a step of preparing a precursor solution by mixing two or more metal precursors and a chelating agent with a solvent, adding a base to the precursor solution to adjust the pH to 8-10. preparing a catalyst solution in the form of a gel by heating after conditioning, coating the catalyst on the basalt fiber sheet by applying and drying the catalyst solution on the basalt fiber sheet, chemical chemical treatment on the surface of the basalt fiber sheet coated with the catalyst It is to provide a method for manufacturing a composite material including growing carbon nanotubes using vapor deposition and alternately stacking and pressing the basalt fiber sheet and the adhesive resin.

In the case of Patent Document 1 and Patent Document 2, the adhesive is applied to both sides of the fabric woven with basalt fiber yarn, and then the desired processing is performed, and Patent Document 2 also laminates sheets made of basalt fiber and adhesive resin alternately, It is pressurized to produce a composite material.

Therefore, in the case of Patent Document 1 and Patent Document 2, it is necessary to first go through the process of weaving a fabric with basalt fiber yarn. In the case of basalt fiber yarn, strength is high but elongation is low. Partial breakage of the basalt fiber yarn occurs, and therefore, there is difficulty in weaving.

In addition, in the case of fabrics woven with basalt fiber yarns, not only the touch feeling is not good, but also the elongation is significantly lowered, so the application range of the fabrics is limited.

Therefore, in the case of basalt fiber yarn, due to its characteristics, there is a difference in the uniformity of the filament fiber yarn wound for each cone, and the maritime rate is different due to the difference in uniformity, and the fine filament yarn with low elongation is partially cut ( Since it is a blood phenomenon), there is difficulty in the weaving process, and there is also a difficulty in coating the desired resin to impart a function to the outer surface of the basalt fiber yarn.

Patent No. 1268929 "Method of manufacturing basalt concave-convex fabric fabric using basalt fiber yarn and high-strength panel" Patent No. 10-2018519 "Basalt Fiber Composite Material and Manufacturing Method"

The present invention relates to a method and apparatus for manufacturing flame retardant resin-coated basalt fiber yarn for supplementing flame retardancy and strength on the outer surface of basalt fiber yarn with excellent flame retardancy and strength but significantly poor elongation and reinforcing insufficient elongation, and in particular, basalt fiber yarn. When coating the flame retardant resin on the outer surface, the resin coating can be performed smoothly through a pretreatment process, and the flame retardant resin coated basalt fiber yarn is used to weave or cut into pellets, and then the flame retardant resin is thermoplastic. It is possible to manufacture flame retardant sheets for various uses by using.

As a means for solving the above problems, the present invention reduces the resistance to friction by applying a volatile solvent before coating the flame retardant resin on the basalt fiber yarn to bundle the multi-stranded filament yarn in a bulky state, and at the same time , While minimizing the damage of the filament yarn, the volatile solvent is completely volatilized immediately before coating the flame retardant resin, so that a uniform and smooth coating can be achieved, and the basalt fiber yarn coated with the flame retardant resin is cooled through the first and second cooling tanks , It is a means of drying through the 1st and 2nd drying rooms and then winding it around the bobbin in the winding unit to manufacture flame retardant resin-coated basalt fiber yarn.

The present invention reduces the resistance to friction by applying a volatile solvent before coating the flame retardant resin on the basalt fiber yarn to collect the bulky multi-strand filament yarn, and at the same time minimizes damage to the filament yarn, but the volatile The solvent is completely volatilized immediately before the flame retardant resin coating, so that a uniform and smooth coating can be achieved, and the flame retardant resin coated basalt fiber yarn is cooled through the first and second cooling tanks, and dried through the first and second drying rooms. Next, as a means of winding on the bobbin in the winding unit, a flame-retardant resin-coated basalt fiber yarn is manufactured, and the flame-retardant resin-coated basalt fiber yarn is used to weave or cut into pellets, and then various types of yarn are used by using the thermoplasticity of the flame-retardant resin. There is an effect such as making it possible to manufacture a flame retardant sheet for use.

Figure 1: Process diagram of the present invention
Figure 2: Schematic configuration diagram of the coating device of the present invention
Figure 3: Schematic diagram of the volatile solvent application device of the present invention
Figure 4: Schematic configuration diagram of the primary drying room of the present invention
Figure 5: Schematic configuration diagram of the secondary drying room of the present invention

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Basalt fiber yarn is a fiber directly extracted from basalt rock, and commercialization is progressing centering on the high-functional fiber field occupied by glass fiber and carbon fiber, and its application to various industrial fields is gradually increasing based on its excellent heat resistance and flame retardancy.

However, due to the nature of the basalt fiber yarn, there is a disadvantage that the strength is excellent but the elongation is remarkably low. that made it possible

Another object is to pre-treat the flame retardant resin before the resin coating so that the flame retardant resin can be smoothly coated on the outer surface of the basalt fiber yarn so that the flame retardant resin coating operation can be easily performed.

The manufacture of the flame retardant resin-coated basalt fiber yarn 20-1 to be manufactured in the present invention is as follows.

In the process of coating the flame retardant resin on the basalt fiber yarn 20, a volatile solvent is applied to the basalt fiber yarn 20 moving to the coating unit in the pretreatment process, so that several filament yarns are concentrated together, but the entire amount is volatilized before coating So that smooth coating can be achieved, and then coated with a flame retardant resin, cooled, dried, and then wound in the winding unit (S6).

The basalt fiber yarn 20 used in the invention is purchased and used from a yarn manufacturer wound on a bobbin 21, but selected from yarns with a thickness of 100 to 1000d (denier) made of several filament yarns according to the purpose and use do.

In the embodiment of the invention, 300d (denier) thick basalt fiber yarn 20 was used.

In the case of the basalt fiber yarn 20, since several filament yarns are simply plied without twisting, even if a certain tension is applied, each filament yarn cannot be converged and is in a bulky state, that is, many voids are formed between the filament yarns. state, and in this state, the outer surface of the basalt fiber yarn 20 cannot be smoothly coated.

Therefore, the bulky basalt fiber yarn 20 is bundled with several filament yarns by using the cohesiveness of the solvent, but the solvent should not remain in the basalt fiber yarn 20 immediately before coating.

In an embodiment of the invention, a volatile oil (also referred to as “con oil” in the related art) was applied as a solvent.

When the volatile oil is applied to the basalt fiber yarn 20, each filament yarn is condensed to minimize air gaps, the process of moving for flame retardant resin coating, and when entering the die of the extruder maintained at a high temperature, the basalt by high heat Volatile oil is volatilized from the fiber yarn 20, but the multifilament yarn remains bundled, and at the same time, the flame retardant resin 42 is coated.

As described above, in the present invention, volatile oil is applied to the basalt fiber yarn 20 before coating to minimize air gaps by concentrating several bulky filament yarns, and the volatile oil is volatilized immediately before coating, so that the outer surface of the basalt fiber yarn Smooth coating of the flame retardant resin to be coated on is achieved.

The flame retardant resin used above is made of any one of PVC, PP, PET, and TPU.

In addition, a phosphorus-based flame retardant, a plasticizer, and other additives, which are environmentally friendly flame retardants, are mixed with the material.

When the coating of the flame retardant resin on the outer surface of the basalt fiber yarn is completed, the first cooling and the second cooling are performed in a water cooling method, and the cooled basalt fiber yarn is dried again through the first drying and the second drying process, and the dried flame retardant resin coated basalt fiber yarn By winding in the winding unit, the manufacture of the flame retardant resin-coated basalt fiber yarn 20-1 is completed.

The coating device 10 for manufacturing the flame-retardant resin-coated basalt fiber yarn 20-1 includes a sending unit S1, a pre-processing unit S2, a coating unit S3, and a cooling unit S4 as shown in FIG. ), a drying unit S5, and a winding unit S6.

The sending unit (S1) sequentially withdraws the basalt fiber yarn 20 wound around the bobbin 21, and installs the bobbin 21 on a creel (not shown) so that the basalt fiber yarn 20 is a preprocessing unit ( S2) is supplied.

The pretreatment unit (S2) applies volatile oil (31) to the basalt yarn (20) supplied to the coating unit (S3) to focus several strands of filament yarn constituting the basalt yarn (20) until just before coating. A volatile solvent application device 30 having the same configuration as in 3 is used.

In the volatile solvent application device 30, an application roller 32 is installed in an oil storage tank 39, volatile oil 33 is filled, and both flanges 21 are composed of apostles 35 and threaded rods 36 After inserting the screw rod 36 of the front positioning tool 34 and the rear positioning tool 34-1, fix it with a nut 37, and use the nut 37 to install the front and rear positioning tools 34, 34 Adjust the position of -1).

The basalt fiber yarn 20 passing through the yarn 35 is applied to the basalt yarn 20 by widening or narrowing the contact area with the application roller 32 through the position adjustment of the front and rear positioning devices 34 and 34-1. It is possible to adjust the amount of volatile oil 33 to be.

The coating unit (S3) is composed of an extruder 40 and a die 41, and melted after injecting a chip of any one of PVC, PP, PET, and TPU, a phosphorus-based flame retardant, a plasticizer, and other additives into the extruder 40 Next, it is supplied to the die 41 located in the front, and the flame retardant resin 42 is coated on the basalt fiber yarn 20 passing through the die 41.

Since the volatile oil 33 applied to the basalt fiber yarn 20 in the above is volatilized by the high temperature when entering the die 41 that maintains the moving process and high temperature, the flame retardant resin 42 on the outer surface of the basalt fiber yarn 20 ) is not an obstacle to the coating operation.

The cooling unit (S4) cools the flame retardant resin 42 coated on the basalt fiber yarn 20 in the coating unit S3 so that the flame retardant resin 42 is integrally fixed to the outer surface of the basalt fiber yarn 20 while being cooled. will be.

The cooling unit (S4) is a water-cooled type and is composed of a primary cooling tank 50-1 and a secondary cooling tank 50-2, and the configuration of each cooling tank is the same as that of a general water-cooled cooling tank, so detailed descriptions are omitted. do.

The drying unit (S5) is a step of drying by removing water remaining in the water-cooling cooling process through the primary cooling tank (50-1) and the secondary cooling tank (50-2), the primary drying chamber (60-1) and a secondary drying room 60-2.

In the primary drying room 60-1, as shown in FIG. 4, the slopes 61 are installed in the front and rear of the primary drying box 60, and a plurality of air injectors 62 are installed on the upper side to provide a primary drying box 60 Compressed air is sprayed toward the flame retardant resin-coated basalt fiber yarn 20-1 passing through the interior.

As shown in FIG. 5, in the secondary drying chamber 60-2, four sides 65 are installed on both sides of the secondary drying box 60', and a first rotating roller 66 and a second rotating roller 67 are installed on the inner surface. Installed, an air sprayer 68 is installed directly above the slope 65 located at the rear, and compressed air is sprayed toward the flame retardant resin-coated basalt fiber yarn 20-1 passing through the secondary drying box 60' made it

The winding unit S6 sequentially winds the dried flame retardant resin-coated basalt fiber yarn 20-1 around the bobbin 70, thereby completing the present invention.

The coating operation of the basalt fiber yarn 20 using the coating device 10 having the above configuration is as follows.

The basalt fiber yarn 20 wound on the bobbin 21 of the sending unit S1 is drawn out, and the volatile oil is applied to the basalt fiber yarn 20 made of multifilament yarn through the volatile solvent coating device 30 of the pretreatment unit S2. By applying (33), several filament yarns are bundled.

That is, as shown in FIG. 3, when the pulled out basalt fiber yarn 20 passes through the island 35 of the front position adjusting device 34, it contacts the application roller 32 and the oil storage tank 39 in the basalt fiber yarn 20 ) is applied with volatile oil 33 filled in.

In the process of applying the volatile oil 33, the amount of the volatile oil 33 applied to the basalt fiber yarn 20 is adjusted by adjusting the height of the front and rear positioning devices 34 and 34-1.

That is, if the nut 37 of the front and rear positioning devices 34 and 34-1 fixed to the flange 31 is loosened and then the front and rear positioning devices 34 and 34-1 are lowered, the position of the apostle 35 is adjusted. lower, and thus the contact area of the basalt fiber yarn 20 passing through the coating roller 32 with the coating roller 32 becomes wider, so the amount of volatile oil 33 applied to the basalt fiber yarn 20 this will increase

In the above, the amount of the volatile oil 33 applied to the basalt fiber yarn 20 is adjusted according to the thickness of the basalt fiber yarn 20 to be coated and the number of filament yarns.

The reason why volatile oil is applied to the basalt fiber yarn 20 in the pretreatment unit (S2) is that the basalt fiber yarn 20 made of multifilament yarn is multi-filament yarn plied, so that it is bulky. By neatly converging the filament yarns, resistance to friction is reduced and damage is minimized at the same time, and the volatile solvent is completely volatilized immediately before coating the flame retardant resin so that smooth coating can be achieved.

The basalt fiber yarn 20 coated with the volatile oil 33 is coated with the flame retardant resin 42 in the coating unit S3.

That is, in a state where the volatile oil 20 is applied and several filament yarns are neatly connected, some volatilization occurs even in the process of moving to the coating unit S3, but when entering the inside of the die 41 installed in front of the extruder 40, high temperature The volatile solvent 33 is almost volatilized by the die 41 heated by , and only the basalt fiber yarn 20 in a concentrated state remains.

In the above state, while the multifilament yarn bundled basalt fiber yarn 20 passes through the die 41, the flame retardant resin 42 is smoothly coated on the outer surface.

In the coating process, the coating amount of the flame retardant resin 42 coated on the basalt fiber yarn 20 is 20 to 40%: 60 to 80% (by volume) of the basalt fiber yarn and the flame retardant resin.

The flame-retardant resin-coated basalt fiber yarn (20-1), in which the flame-retardant resin (42) is coated on the outer surface of the basalt fiber yarn (20), has a primary cooling tank (50-1) and a secondary cooling tank constituting the cooling unit (S4). In (50-2), the flame retardant resin 42 is firmly adhered to the outer surface of the basalt fiber yarn 20 by cooling through a water-cooled cooling means.

In the above, dividing the cooling process into first and second is for complete cooling.

Since water remains on the outer surface of the flame-retardant resin-coated basalt fiber yarn 20-1 that has been cooled, high pressure is applied in the primary drying chamber 60-1 and the secondary drying chamber 60-2 constituted in the drying unit S5. Sufficiently remove moisture through the sprayed compressed air and dry it.

As shown in FIG. 4, in the primary drying chamber 60-1, in the process of passing the flame retardant resin-coated basalt yarn 20-1 through the slope 61 through the primary drying box 60, a plurality of Since the compressed air injected from the air injection nozzle 62 is injected at high pressure toward the flame retardant resin-coated basalt fiber thread 20-1, moisture adhering to the outer surface is almost removed.

The flame retardant resin-coated basalt fiber yarn 20-1, from which water is removed in the primary drying chamber 60-1, is subjected to secondary drying in the secondary drying chamber 60-2 as shown in FIG.

That is, the flame retardant resin-coated basalt fiber yarn 20-1 supplied to the secondary drying chamber 60-2 passes through the secondary rotation roller 67 installed inside the secondary drying box 60', and then rotates the primary It passes through the roller 66 and is supplied to the take-up unit S6 through the yarn 65 located at the rear.

In the above, the flame retardant resin-coated basalt fiber yarn (20-1) passing through the secondary rotation roller (67) and the primary rotation roller (66) is repeatedly passed about 3 to 5 times for more complete drying, and then the yarn located at the rear It is withdrawn to the outside through (65).

At this time, an air sprayer 68 is installed on the upper part of the secondary drying box 60', and the flame retardant resin-coated basalt fiber yarn 20-1 drawn out through the slope 65, and the primary rotating roller 60 ) and the secondary rotating roller 67 are repeatedly rotated to completely remove the water remaining in the flame retardant resin-coated basalt fiber yarn 20-1 and then take it out to the winding unit S6.

The flame retardant resin-coated basalt fiber yarn 20-1 sufficiently dried in the drying unit S5 is sequentially wound around the bobbin 70 in the winding unit S6.

The flame retardant resin-coated basalt fiber yarn 20-1 prepared above is used as warp and weft yarns to weave a basalt fiber fabric having a flame retardant function and heat bonding property, and is used for various purposes.

In addition, the manufactured flame retardant resin-coated basalt fiber yarn (20-1) is cut into pellets and then heat-compressed to produce a non-woven fabric sheet, and the prepared sheet is used for various purposes requiring flame retardancy. It can be applied to the products of

As described above, by coating the outer surface of the basalt fiber thread with a flame retardant resin, it not only enhances the touch feeling and elongation, which are weak points of the basalt fiber, but also fire-retardant curtains or blinds that require flame retardancy because they are thermally bonded by the action of the flame retardant resin when thermally compressed. It can be applied and used for various purposes such as , flooring, etc.

(S1)--transmitting unit (S2)--preprocessing unit
(S3)--coating part (S4)--cooling part
(S5)--drying part (S6)--winding part
(10)--Coating device (20)--Basalt fiber yarn
(20-1)--Flame retardant resin-coated basalt fiber yarn
(21)--Bobbin (30)--Volatile solvent application device
(31)--flange (32)-applying roller
(33)--Volatile oil (34)--Front position adjuster
(34-1)--rear position adjusting tool (35)--apostle
(36)--threaded rod (37)--nut
(39)--oil reservoir (40)--extruder
(41)--Dice (42)--Flame Retardant Resin
(60)--1st drying box (60')-2nd drying box
(60-1)--1st drying room (60-2)--2nd drying room
(61)--Apostle (62)--Air blaster
(65) - Apostle (66) - 1st rotary roller
(67)--2nd rotating roller (68)--air injector
(70)--Bobbin

Claims (3)

The basalt fiber yarn wound on the bobbin of the sending unit is taken out, and through the die configured in the extruder of the coating unit, a flame retardant resin is coated on the outer surface of the basalt fiber yarn to obtain a flame retardant resin coated basalt fiber yarn, and the flame retardant resin coated basalt fiber yarn is passed through the cooling unit. Manufacturing of flame-retardant resin-coated basalt fiber yarns that are cooled in the basalt fiber yarns so that the flame-retardant resin is integrally and stably adhered to the outer surface of the basalt fiber yarns, the cooled flame-retardant resin-coated basalt fiber yarns are dried in the drying unit, and then wound around the winding part in the winding unit. In the method, a pretreatment unit is formed between the sending unit and the coating unit, and the pretreatment unit applies a volatile solvent to the basalt fiber yarn made of a plurality of multifilament yarns before coating them with a flame retardant resin to make multi-stranded filament yarns in a bulky state The volatile oil applied to the basalt fiber yarn is completely volatilized before the flame retardant resin is coated in the die composed of the extruder of the coating part, thereby reducing the resistance to friction and minimizing damage at the same time by concentrating the flame retardant coating on the outer surface of the basalt fiber yarn A method for producing flame retardant resin-coated basalt fiber yarn, characterized in that the resin is produced so that uniform and smooth coating is achieved. A sending unit (S1) for sequentially withdrawing the basalt fiber yarn wound on the bobbin, a coating unit (S3) for coating the outer surface of the basalt fiber yarn with the flame retardant resin melted in the extruder through a die, and a coating unit ( A cooling unit (S4) for cooling the flame retardant resin-coated basalt fiber yarn obtained in S3) so that the flame retardant resin and the basalt fiber yarn are firmly adhered, and a drying unit (S5) for drying the cooled flame-retardant resin-coated basalt fiber yarn; In constituting the manufacturing apparatus of the flame retardant resin-coated basalt fiber yarn composed of the winding unit (S6) for winding the flame-retardant resin-coated basalt fiber yarn, the pre-processing unit (S2) is configured between the sending unit (S1) and the coating unit (S3) , The pretreatment unit (S2) applies a volatile solvent to the basalt fiber yarn supplied to the coating unit (S3) through a volatile solvent coating device to collect the multi-strand filament yarn in a bulky state, and the basalt fiber in the coating unit (S3) An apparatus for producing flame retardant resin-coated basalt fiber yarn, characterized in that it enables smooth coating of the flame retardant resin coated on the outer surface of the yarn. The method of claim 2, wherein the volatile solvent application device (30) configured in the pretreatment unit (S2) fills the oil storage tank (39) with the volatile oil (33), and installs the application roller (32) in the oil storage tank (39) so that a part of the application roller 32 is immersed in the volatile oil 33, and the front position adjusting device 34 and the rear position adjusting device 34- By inserting the threaded rod 36 of 1) and then tightening and fixing it with the nut 37, the basalt fiber yarn moves through the apostle 35 and comes into contact with the coating roller 32, so that the volatile oil 33 is added to the basalt fiber yarn Apparatus for producing flame retardant resin-coated basalt fiber yarn, characterized in that it is applied.

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