KR100837764B1 - Composition adiabatic fiber yarn of heat-resistant and maunfacturing method thereof - Google Patents

Abstract

 The present invention is made of non-asbestos as a heat-resistant heat-insulating composite fiber by mixing acrylic carbon fiber, para-aramid fiber and silica fiber, to maintain the properties of the fiber for a long time at high temperature, good fire resistance and thermal insulation, as well as change in temperature The present invention relates to a heat-resistant insulating composite fiber yarn having excellent stability, excellent electrical insulation, and the like, because of its lack of elasticity.

 A first feature of the present invention is a heat-resistant heat-insulating composite fiber yarn characterized by forming a heat-resistant heat-insulating composite fiber yarn by mixing acrylic carbon fiber, para-aramid fiber and silica fiber.

The second feature of the present invention is 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 yarn as a state before carding. 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- A blending process for forming a wrap by mixing 40% by weight and mixing the para-aramid fiber by 30-40% by weight and the silica fiber by 30-40% by weight through a combiner;

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; Heat-resisting heat-insulating composite fiber yarn by a re-winding process of rewinding to bobbins, sprues or cones while swooping to maintain the state of the yarns manufactured in the weaving and weaving process in an optimal state. It is a method for producing a heat-resistant insulating composite fiber yarn, characterized in that the production.

The present invention as described above, first, the heat-resistant heat-insulating composite fiber of the present invention 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 ℃.

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 heat-insulating composite fiber of the present invention is strong in high temperature and durable, and also has excellent electrical insulation and chemical resistance and no skin irritation, and can 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 fibers or asbestos fibers are not detected even at high temperatures, and thus do not harm the human body. It can be effective.

Description

Heat-resistant insulating composite fiber yarn and its manufacturing method {Composition adiabatic fiber yarn of heat-resistant and maunfacturing method

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

The present invention relates to a heat-resistant heat-insulating composite fiber yarn and a method of manufacturing the same, more specifically, acrylic carbon fibers, para-aramid fibers and silica fibers are mixed with a non-asbestos as a heat-resistant heat-insulating composite fiber, the fiber for a long time at high temperature The present invention relates to a heat-resistant heat-insulating composite fiber yarn and a method of manufacturing the same, which maintain the properties of the fiber, 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 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 composed of a heat-resistant heat-insulating composite fiber by mixing acrylic carbon fiber, para-aramid fiber and silica fiber, the acrylic carbon fiber is 30 to 40% by weight and the para The aramid fiber is 30 to 40% by weight and the silica fiber is 30 to 40% by 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;

Weaving and binding the yarn produced by the re-winding process to rewind the bobbin, sprue or cone while swooping to maintain the state of the yarn manufactured in the weaving and weaving process in an optimal state It is shipped in a skein or inspected packaging and shipped in a cheese state to produce a heat-resistant insulating composite fiber yarn.

Hereinafter, the preferred embodiment will be described in detail.

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

As the heat-resistant heat-insulating composite fiber of the present invention, acrylic carbon fiber, para-aramid fiber, and silica fiber are mixed to form heat-resistant heat-insulating composite fiber.

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 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 temperature, and has excellent stability and excellent electrical insulation and resistance to almost no stretch due to temperature change. 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.

Next, as a second embodiment of the present invention, the acrylic carbon fiber, the para-aramid fiber, and the silica fiber of the present invention will be described.

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.

The fifth step-Roving process to further draw the scriber manufactured in the drawing process 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-a rewinding process, while raiding to maintain the state of the yarns produced in the weaving and weaving process to maintain the optimum state, and again wound in a bobbin, sprue or cone (Cone) The yarn is softened, bound and shipped in a skeletal state or inspected and packed in a cheese state to produce heat- and cold-resistant composite insulating fiber yarn.

The heat-resistant heat-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 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.

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 fibers is to use a slightly thick fibers tends to be more easily cut para-aramid fiber.

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 of the present invention 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 ℃.

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 heat-insulating composite fiber of the present invention is strong in high temperature and durable, and also has excellent electrical insulation and chemical resistance and no skin irritation, and can 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 fibers or asbestos fibers are not detected even at high temperatures, and thus do not harm the human body. It can be effective.

Claims (4)

A heat-resistant heat-insulating composite fiber yarn comprising mixing acrylic carbon fibers, para-aramid fibers and silica fibers to form a heat-resistant heat-insulating composite fiber yarn. The heat-resistant insulating composite fiber yarn according to claim 1, wherein the acrylic carbon fiber is 30 to 40% by weight, the paraaramid fiber is 30 to 40% by weight, and the silica fiber is mixed to 30 to 40% by weight. The acrylic carbon fiber according to any one of claims 1 to 3, wherein the acrylic carbon fiber is composed of a fiber length of 20 to 25 mm and 2 to 8 denier, and the para-aramid fiber is a fiber length of 30 to 120 mm and 1 to 6 denier. The silica fiber is a heat-resistant heat-insulating composite fiber, characterized in that the fiber length is 60 ~ 150㎜ and the fineness is made of 2 to 8 denier. 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; The heat-resistant heat-insulating composite fiber yarn is manufactured by a re-winding process in which the state of the yarn manufactured in the weaving and weaving process is swept to maintain the state of the yarn, and then wound around the bobbin, sprue, or cone. The heat-resistant heat-insulated composite fiber yarn manufacturing method to be.

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