KR100839124B1 - Composition adiabatic fiber with composition adiabatic fiber yarn of heat-resistant and maunfacturing method thereof - Google Patents

Abstract

A composite fiber by means of a heat-resistant adiabatic composite fiber yarn and a manufacturing method thereof are provided to have the excellent safety and electric insulating property without the elasticity due to the change of temperature. A composite fiber is constructed by acryl group carbon fiber of 30-40 wt%, para-aramid fiber of 30-40 wt% and silica fiber of 30-40 wt %. The acryl group carbon fiber is constructed by the length of fiber of 20-25mm and the fineness of 2-8 denier. The para-aramid fiber is constructed by the length of fiber of 30-120mm and the fineness of 1-6 denier. The silica fiber is constructed by the length of fiber of 60-150mm and the fineness of 2-8 denier. In the silica fiber, the content of silicon dioxide is 99-95 wt%, a content of aluminium trioxide is 0.5-3.5 wt% and a content of any one of CaO and MgO is 0.2-1.5 wt%, so that the form is maintained at a high temperature. The instant use temperature is 1,650 °C and used continuously at the temperature of 1,200 °C or more for a long time.

Description

Composite fiber using heat-resistant insulating composite fiber yarn and its manufacturing method {composition adiabatic fiber with composition adiabatic fiber yarn of heat-resistant and maunfacturing method

1 is a manufacturing process chart of the "heat-resistant insulating composite fiber" according to the present invention.

The present invention relates to a composite fiber using a heat-resistant heat-insulating composite fiber yarn and a method of manufacturing the same. More specifically, it is made of non-asbestos as a heat-resistant heat-insulating composite fiber by mixing acrylic carbon fiber, para-aramid fiber and silica fiber, and at a high temperature for a long time The present invention relates to a composite fiber using a heat-resistant heat-insulating composite fiber yarn and a method of manufacturing the same, which maintain the properties of the fiber throughout, have good fire resistance and thermal insulation, as well as no elasticity due to temperature change, and excellent stability and electrical insulation.

In general, flame retardance or fire resistance of the fiber prevents or inhibits the combustion of the fiber by itself when the flame is in contact with the flame and removes it.It is perfect even in the case of fibers such as glass fiber or asbestos due to the characteristics of the fiber. It is difficult to disabling.

In addition, the glass fiber or asbestos is carcinogenic and toxic components are detected and dust is generated, which is a fatal harm to the human body has been regulated its use.

 Fire retardant or fire retardant fiber has been developed mainly for cellulose fiber as clothing, but in recent years, many researches have been conducted for the purpose of fire retardant or fire retardant of synthetic fiber. As a material, the performance cannot be exhibited with ordinary PET fibers, and therefore, aramid fibers and carbon fibers have been manufactured as high-performance fibers.

In the meantime, the environment of flame retardant and heat-resistant fiber has been developed, and the flame retardant fiber has been established steadily in the center of the interior, and the heat-resistant fiber mainly in fire protection clothing.

However, these demands even more stringent requirements on the risk of fire and subsequent accidents in a more advanced, diversified and faster society.

In other words, by developing a flame-retardant fiber, the optimal material in the field of safety clothing or industrial materials as a flame retardant that has excellent fire resistance to high heat and flames and blocks heat or flames without burning, is one of the fields of manufacture of new technologies. As it still has technical difficulties.

At present, the aramid fiber or carbon fiber as the manufacturing field of the new technology as an optimal material in the field of industrial materials.

Although the composite fabric mixed with glass fiber as a reinforcing material to the aramid fiber has been conceived, but the conventional composite fabric is a carcinogenic and toxic component is detected due to the mixed composition of glass fiber or asbestos, which is harmful to the human body and also dust This is a problem that occurs.

The aramid fiber has a good tensile strength and elongation, less dust generation, non-slip, long fiber, easy to manufacture yarn, but has a low heat resistance, the carbon fiber is likely to generate fine dust, slippery fiber structure Since the fiber is not easy to manufacture yarn, but has a strong heat advantage.

Therefore, by incorporating aramid fibers having good tensile strength and elongation and carbon fibers having good heat resistance and fire resistance, invented a composite heat-resistant fiber with good heat resistance and filed by the present applicant with the patent application No. 10-2005-0120506 (hereinafter referred to as cited invention) I have.

By the way, the cited invention has some heat resistance, but when 3 to 5 minutes elapses at a high temperature of 1000 ° C. or more, the fiber is completely decomposed and its shape is lost.

The inventors solved the shortcomings of the mixed composite insulation fiber of the aramid fiber and carbon fiber to be resistant to heat as it was devised to provide a fiber in which the fiber properties are maintained by maintaining the properties of the fiber as the high temperature durability is strong even after a long time. High tensile strength and elongation, low dust generation, non-slip, long fiber, easy to manufacture yarn, etc., easy to manufacture and heat resistant para-aramid fiber and silica fiber with good heat stability as well as good shape stability at high temperature The inventors have invented a composite insulating fiber having excellent heat resistance and the like.

Therefore, the object of the present invention is good heat-resistant acrylic carbon fiber and good tensile strength and elongation, less dust generation, non-slip, long fiber, easy to manufacture yarn, etc. It is a heat-resistant heat-insulating composite fiber made by mixing silica fiber with good chemical resistance and electrical insulation, and it has excellent heat resistance and high temperature durability that maintains its shape for a long time at high temperature without containing carcinogenic toxic substances such as asbestos. In addition, the present invention provides a composite fiber using a heat-resistant insulating composite fiber yarn having excellent chemical resistance, insulation safety, and heat insulating effect, and a method of manufacturing the same.

The first embodiment for achieving the object of the present invention is a heat-resistant heat-insulating composite fiber composed of a mixture of acrylic carbon fibers, para-aramid fibers and silica fibers, weaving, knitting to form a heat-insulating composite fiber, the heat-insulating composite fiber is a tape type , Fabricated by tubular (loop type), fabric type, etc., wherein the acrylic carbon fiber is 30 to 40% by weight, the para-aramid fiber is 30 to 40% by weight and the silica fiber is 30 to It is 40 weight%.

The second embodiment for achieving the object of the present invention is a fiber of 20-25mm in preparing the raw material of the acrylic carbon fiber, para-aramid fiber and silica fiber for producing heat-resistant heat-insulating composite fiber yarn as a state before carding Prepared from 2 to 8 denier acrylic carbon fiber having a long length, 1 to 6 denier para aramid fiber having a fiber length of 30 to 120 mm, and a fiber length of 60 to 150 mm and fineness of 2 to 8 denier silica fibers Acrylic carbon fiber is 30 to 40% by weight, the para-aramid fiber is 30 to 40% by weight and the silica fiber is mixed by 30 to 40% by weight mixed through a combiner (Mixing) process to form a lap surface and;

The wrap prepared in the blending surface process is put into a carding machine to form a sliver wrap by first arranging the fibers and then performing the process over two to three times to remove the constriction and uniformly aligning the fibers (sliver). A carding process for preparing a;

The sliver manufactured in the carding process is mixed with 12 to 14 strands again to remove short fibers, cuts, and miscellaneous cuts in the carding process, so that the uniformity is good so that a more tensioned yarn can be manufactured. A combing process of manufacturing a sliver;

A drawing process for producing thinner slenders by drawing and stretching four to five strands of slivers in the combing process;

A roving process of further stretching the sliver manufactured in the drawing process to produce a roving while giving a slight twist;

Spinning process for drawing the yarn to maintain the strength of the yarn to increase the cohesion between the fibers by stretching the irradiation produced in the Roving process to the required thickness and giving twist to intertwine in three dimensions;

Swiping the yarn produced in the spinning process to maintain the process moisture content while rewinding in the conn (Cone), spun (Spool) or bobbin (Bobbin) according to the purpose of use (Water Conditioning) and winding (Winding) ) Process;

A weaving and twisting process of twisting and twisting two or more strands of yarn in order to increase the strength of the yarns manufactured in the water conditioning and winding processes;

A re-winding process of rewinding the bobbin, the sprue, or the cone, while swooping to maintain an optimal state of the yarn manufactured in the weaving and twisting process;

Weaving or knitting process for producing a composite fiber by weaving or knitting by using the heat-resistant heat-insulating composite fiber yarn manufactured by the re-winding process;

It consists of a processing step of processing the composite fiber produced in the weaving or knitting process according to the application.

Hereinafter, the preferred embodiment will be described in detail.

First, an embodiment of a heat resistant insulating composite fiber will be described as a first embodiment of the present invention.

The heat-resistant heat-insulating composite fiber of the present invention is a heat-resistant heat-insulating composite fiber composed of a mixture of acrylic carbon fibers, para-aramid fibers and silica fibers to weave and knit to form a heat-insulating composite fiber, the heat-insulating composite fiber is tape, tube (loop type) ), And fabricated by fabric type (fabric).

The acrylic carbon fiber is 30 to 40% by weight, the para-aramid fiber is 30 to 40% by weight and the silica fiber is 30 to 40% by weight.

And the acrylic carbon fiber is made of a fiber length of 20 to 25 mm and 2 to 8 denier, para-aramid fiber is made of a fiber length of 30 to 120 mm and 1 to 6 denier, the silica fiber is 60 ~ 150mm and fineness consists of 2-8 deniers.

The acrylic carbon fiber is heat resistant and has a nonflammable function, and the paraaramid fiber has good heat resistance and increases tensile strength.

The silica fiber has a content of 95 to 99% by weight of silicon oxide (SiO ₂ ), 0.5 to 3.5% by weight of aluminum trioxide (Al ₂ O ₃ ), and 0.2 to 1.5 of any one component of CaO or MgO. It contains weight percent and maintains its shape even at high temperature. Its instantaneous use temperature is 1,650 ℃ and its long continuous use temperature is more than 1,200 ℃, so it can be used continuously for a long time. Has excellent SiO ₂ Its main component is that it can have a good effect as an electrical insulator, as well as good chemical resistance, no skin irritation and no harm to human body.

Therefore, the heat-resistant heat-insulating composite fiber composed of a mixture of the acrylic carbon fiber, para-aramid fiber and silica fiber can be used in applications requiring heat resistance because the properties of the fiber does not change even after a long time at a high temperature of more than 1,200 ℃ will be.

As described above, the heat-resistant insulating composite fiber yarn of the present invention is strong in high temperature and durability, and in particular, the silica fiber maintains its shape even at high temperatures, and has excellent stability and excellent electrical insulation and resistance to almost no stretch due to temperature changes. It has no chemicals and skin irritation and can have no harm to human body.

And heat-resistant heat-insulating composite fiber of the present invention configured as described above is made of non-asbestos, carcinogenic components and toxic components are not detected so as not to harm the human body.

Therefore, the heat-resistant, cold-resistant composite insulating fibers configured by fabricating such a tape type, tube type (loop type), fabric type, etc. of the present invention as described above, industrial materials, safety protective equipment and disaster prevention equipment, special work clothes, other uses Can be used for

As the industrial material, the tube or rubber hose may be coated to protect the tube or the rubber hose, and the heat insulating effect may be obtained. The tube may be applied to various pipes such as a pipe or a fluid tube such as a gas or a liquid or a bellows tube. It can be used by coating.

In addition, it can be used for welding sheet (Spatter Sheet), fire protection and heat dissipation curtain, cover, heat insulating material, heat insulating material, sound absorbing material, duct surface material.

And it can be used for sealing material, high pressure hose tube, etc. to prevent the flow of waste water between the hot top and ingot (otot) during steelmaking.

The safety protective equipment and disaster prevention equipment can be used for heat-resistant gloves, hood, apron, toshi, gaiters, electric wire (underground cable), anti-fire tape, fire mat, household fire, emergency fire bag, evacuation rope.

The special work clothes can be used for fire fighting clothes, heat dissipation clothes, welding clothes, chemical clothes and the like.

The other uses can be used as curtains for ships, hospitals, theaters, seat seats such as subways, wallpaper as building interior materials, and the like.

Next, as a second embodiment of the present invention, a heat-resistant heat-insulating composite fiber composed of a mixture of the acrylic carbon fiber, the para-aramid fiber and the silica fiber of the present invention is manufactured and woven into a tape, tube (loop), fabric, etc. Referring to the method of manufacturing the insulation composite fiber by knitting, as follows.

1st step- 2-8 having a fiber length of 20-25 mm in preparing the raw material of acrylic carbon fiber, para-aramid fiber and silica fiber for producing heat-resistant heat-insulating composite fiber as a state before carding in the horn surface process 1-6 denier para-aramid fibers having a denier acrylic carbon fiber and a fiber length of 30-120 mm and silica fibers having a fiber length of 60-150 mm and fineness of 2-8 denier are prepared, and the acrylic carbon fiber is 30- 40 wt%, the para-aramid fibers are 30 to 40 wt%, and the silica fibers are mixed at 30 to 40 wt%, mixed through a combiner to form a wrap.

The second process-Carding process, the wrap prepared in the honta cotton process is put into the carding machine to arrange the fibers first to form a sliver wrap, and to remove the constriction by performing the process over 2 ~ 3 times. Sliver is prepared by uniformly arranging the.

3rd process-Combing process, 12 ~ 14 strands of the sliver manufactured in the carding process are mixed again to remove short fibers, nebs, and miscellaneous cuts from the carding process, and thus a yarn having a higher tension ( Sliver with good leveling agent is prepared to produce combed yarn.

4th process-Drawing The sliver in the said combing process is drawn while drawing 4-5 strands of mixing (Drafting), and a thinner sliver is manufactured.

Fifth step-Roving process, the sliver manufactured in the drawing process is further drawn to give a slight twist to produce a roving.

6th process-Spinning process to produce the yarn to maintain the strength of the yarn to increase the cohesion between the fibers by stretching in three dimensions while stretching and twisting the irradiation produced in the Roving process to the required thickness.

The seventh process-water conditioning and winding process, the yarn prepared in the spinning process to raid to maintain the process moisture content, depending on the purpose (Cone), Spool or bobbin depending on the purpose of use Rewind it to Bobbin.

Eighth step—Doubling while twisting two or more strands in order to increase the strength of the yarns produced in the Water Conditioning and Winding processes in the plying and twisting.

The ninth process-rewinding process is a rewinding process, which is wound around the bobbin, sprue, or cone and swivels to maintain the state of the yarn manufactured in the weaving and twisting process. Weaving or knitting process of weaving or knitting using a heat-resistant heat-insulating composite fiber yarn produced by the process to produce a composite fiber;

It consists of a processing step of processing the composite fiber produced in the weaving or knitting process according to the application.

The heat-resistant insulating composite fiber of the present invention prepared as described above can be used in applications requiring heat resistance because the properties of the fiber does not change even after a long time at a high temperature of 1,200 ℃ or more, the elasticity according to the change of temperature is almost Excellent stability, excellent electrical insulation and chemical resistance and no skin irritation, can have an effect that is harmless to the human body, carcinogenic and toxic components are not detected.

Therefore, it can be used for industrial materials, safety protective equipment and disaster prevention equipment, special work clothes, and other uses.

In the production of the heat-resistant heat-insulating composite fiber yarn, when the fiber length of the acrylic carbon fiber is less than 20mm, the fiber length of the para-aramid fiber is less than 30mm, and the fiber length of the silica fiber is less than 60mm, it is difficult to spun the spinning, acrylic carbon If the fiber length of the fiber is longer than 25 mm and the fiber length of the para-aramid fiber is 120 mm and the fiber length of the silica fiber is longer than 150 mm, there is a problem that the fibers are entangled when combing in the carding and regular face processes, which is not suitable. There is a problem that this tends to occur, and the fineness can be selected according to the purpose of use. However, when the fineness of the para-aramid fiber is less than 1 denier, the fineness is lowered in the carding facetizing process, and the composition is lowered. If thick, it may cause slippage when mixed with silica fiber and acrylic carbon fiber. And, a silica fiber and an acrylic carbon fiber tends to be easily cut than para-aramid fiber to use a slightly thick fibers.

In addition, the reason why the fiber length of the silica fiber is longer than that of the paraaramid fiber is because it tends to be more easily cut than the paraaramid fiber, and therefore, the longer fiber is used, and the workability is good.

On the other hand, it is natural for the workability that cylinders and doffers are used in the blending process and the carding process depending on the degree of fineness and fiber length of the raw material used, and in general, when the fineness is long or the fiber length is long, It is to use a low height or density, which requires careful attention.

Also, in general, it is natural to control the rotation of the takeer, cylinder, worker, stripper and doffer according to the supply and discharge amount of the fiber and the draw ratio. .

In addition, in order to maintain the manufactured heat-resistant heat-insulating composite fiber yarn in an optimal condition, it is preferable to perform a raid for each process after the spinning process so as to maintain a normal process moisture content.

The present invention as described above can obtain the following effects.

First, the heat-resistant heat-insulating composite fiber configured by the tape, tube (loop), fabric type, etc. of the present invention is not changed even after a long time at a high temperature of more than 1,200 ℃ field that requires heat resistance It can be used for.

In other words, the stability is excellent because there is little elasticity according to the change of temperature, and there is little deformation by high heat, so there is almost no shrinkage and relaxation by indirect and direct heat, so that shape can be maintained, thereby reducing the risk of high temperature, thereby ensuring stability. .

Second, the heat-resistant insulating composite fiber of the present invention is strong in high temperature and durability, and also has excellent electrical insulation, chemical resistance and no skin irritation, and may have an effect that is harmless to the human body.

Third, the heat-resistant heat-insulating composite fiber of the present invention is made of non-asbestos, so that carcinogenic or toxic components such as glass fiber or asbestos fiber are not detected even at high temperature, so that it does not harm the human body and does not generate dust, so it can be safely used. It can be effective.

Fourth, the heat-resistant insulating composite insulating fiber of the present invention can be configured by weaving, knitting in a variety of forms, such composite insulating fibers can be used for industrial materials, safety protective equipment and emergency equipment, special work clothes, and other various applications It works.

In particular, the industrial material may be coated on the tube or rubber hose to protect the tube or rubber hose as well as to obtain a heat insulating effect, the tube is a pipe or a variety of fluid, such as gas, liquid or bellows tube It can be used to cover pipes, and can also be used for welding sheet sheets, fire and heat-resistant curtains, covers, insulations, insulations, sound-absorbing materials, and surface materials for ducts. It can be used for sealing material, high pressure hose tube, etc. to prevent the flow of water between ingots.

And the safety protective equipment and equipment for disaster prevention can be used in heat-resistant gloves, hood, apron, toe, gaiters, wire (underground cable) burning prevention tape, fireproof mats, household fire, emergency firebags, evacuation rope, etc. Special work clothes can be used for fire fighting suits, heat dissipation suits, welding suits, chemical suits, etc., and for other purposes, such as curtains for ships, hospitals, theaters, seat sheets for subways, insulation layers for walls, building interior materials such as wallpaper, etc. Its uses are diverse.

Fifth, the fiber is relatively soft, so that it is possible to work according to the desired shape, such as gap clearance, packing, or covering material of pipes or hoses.

Claims (6)

A composite fiber using a heat-resistant heat-insulating composite fiber yarn, characterized in that the heat-resistant heat-insulating composite fiber yarns are woven or knitted with a heat-insulating composite fiber yarn mixed with acrylic carbon fibers, para-aramid fibers and silica fibers. delete According to claim 1, wherein the acrylic carbon fiber is 30 to 40% by weight, the para-aramid fiber is 30 to 40% by weight and the silica fiber is 30 to 40% by weight, characterized in that the heat-resistant insulating composite fiber yarn Used composite fiber. The method of claim 1, wherein the acrylic carbon fiber is made of a fiber length of 20 to 25 mm and 2 to 8 denier, the para-aramid fiber is made of a fiber length of 30 to 120 mm and 1 to 6 denier, the silica fiber is a fiber A composite fiber using a heat-resistant insulating composite fiber yarn, characterized in that the length is 60 ~ 150㎜ and the fineness is composed of 2 to 8 denier. The method of claim 1, wherein the thermal insulation composite fiber is a welded fire sheet (Spatter Sheet), fire and heat-resistant curtains, covers, insulation, insulation, sound-absorbing material, duct surface material, between the hot top and ingot during steelmaking Sealing materials for preventing the flow of water in the industrial materials for high pressure hose tubes; Heat resistant gloves, hoods, aprons, torches, gaiters, wire burn prevention tapes, fireproof mats, household fire extinguishing bags, emergency firebags, safety gears for evacuation ropes, and emergency equipment; A composite fiber using a heat-resistant heat-insulating composite fiber yarn, characterized in that it is used for any one of the building interior materials for seat seat insulation layer, wallpaper. 2 ~ 8 denier acrylic carbon fiber having 30 ~ 20mm fiber length and 30 ~ in preparing the raw material of acrylic carbon fiber, para-aramid fiber and silica fiber to prepare heat-resistant heat-insulating composite fiber as a state before carding 1 to 6 denier para-aramid fibers having a fiber length of 120 mm and silica fibers having a fiber length of 60 to 150 mm and fineness of 2 to 8 deniers were prepared, and the acrylic carbon fiber was 30 to 40 wt%, and the para-aramid A blend surface process in which fibers are 30 to 40 wt% and the silica fibers are mixed at 30 to 40 wt% by mixing through a combiner to form a wrap; The wrap prepared in the blending surface process is put into a carding machine to form a sliver wrap by first arranging the fibers and then performing the process over two to three times to remove the constriction and uniformly aligning the fibers (sliver). A carding process for preparing a; The sliver manufactured in the carding process is mixed with 12 to 14 strands again to remove short fibers, cuts, and miscellaneous cuts in the carding process, so that the uniformity is good so that a more tensioned yarn can be manufactured. A combing process of manufacturing a sliver; A drawing process for producing thinner slenders by drawing and stretching four to five strands of slivers in the combing process; A roving process of further stretching the sliver manufactured in the drawing process to produce a roving while giving a slight twist; Spinning process for drawing the yarn to maintain the strength of the yarn to increase the cohesion between the fibers by stretching the irradiation produced in the Roving process to the required thickness and giving twist to intertwine in three dimensions; Swiping the yarn produced in the spinning process to maintain the process moisture content while rewinding in the conn (Cone), spun (Spool) or bobbin (Bobbin) according to the purpose of use (Water Conditioning) and winding (Winding) ) Process; A weaving and twisting process of twisting and twisting two or more strands of yarn in order to increase the strength of the yarns manufactured in the water conditioning and winding processes; A re-winding process of rewinding the bobbin, a sprue, or a cone while swiping to maintain the state of the yarn manufactured in the weaving and weaving process; Weaving or knitting process for producing a composite fiber by weaving or knitting by using the heat-resistant heat-insulating composite fiber yarn manufactured by the re-winding process; Method for producing a composite fiber using a heat-resistant heat-insulating composite fiber yarn, characterized in that made of a processing step of processing the composite fiber produced in the weaving or knitting process according to the application.

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