NL2025634B1

NL2025634B1 - Yarn for a tubular fabric and method for preparing the same, heat-resistant warp tubular fabric and protective suit

Info

Publication number: NL2025634B1
Application number: NL2025634A
Authority: NL
Inventors: Qian Jun; Cao Lixia; Ding Zhijia; Ding Jianmei
Original assignee: Changshu Baofeng Special Fiber Co Ltd
Priority date: 2019-06-18
Filing date: 2020-05-20
Publication date: 2021-04-08
Also published as: CN110129951B; CN110129951A; NL2025634A; DE202020102871U1

Abstract

The present invention relates to the field of fabrics, and in particular, to a yarn for a tubular fabric and a method for preparing the same, a heatresistant warp tubular fabric and a protective suit. A first yarn is configured to weave a tubular fabric, and a second yarn is accommodated in a tubular part of the tubular fabric. The first yarn is prepared by blending a flame retardant adhesive and a first fibrous material. The second yarn is prepared by blending modacrylic fibers and a second fibrous material. The first yarn has a high flame retardant performance. The second yarn has a high flame retardant and heat insulation performance and a high thermal expansion performance. The second yarn is embedded in the tubular part, so that the tubular part will be firmer and less deformable, and the tubular part will protrude outward, thus the heat insulation effect will be reinforced. When a protective suit is made of such a tubular fabric, the protruding tubular part will have a buffer action on external heat, thereby lowering the hurt of heat on human body.

Description

P127278NL00 Title: YARN FOR A TUBULAR FABRIC AND METHOD FOR PREPARING THE SAME, HEAT-RESISTANT WARP TUBULAR

FABRIC AND PROTECTIVE SUIT

FIELD OF THE INVENTION 10001] The present Invention relates to the field of fabrics, and In particular, fo a yarn for a tubular fabric and a method for preparing the same, a heat-resistant warp tubular fabric and a protective suit.

BACKGROUND OF THE INVENTION

[0002] Protective suits for special operations, for example, protective suits for firemen and protective suits against electric arc, efc., have strict requirements on heat insulation and protection effects.

{0003 However, the current protective suits in the market have the problems of bad heat insulation effect, poor hand feeling, undurable to squeeze and deformation when heated or washed, which may lower the later service performance of the protective suits.

SUMMARY OF THE INVENTION 10004] 1t is an object of the present invention to provide a varn for a tubular fabric and a method for preparing the same, a heat-resistant warp tubular fabric and a protective suit, which may improve the heat insulation effect of the existing protective suits.

[00058] In a first aspect of the Invention, there provides a technical solution as follows.

[0006] A varn for a tubular fabric, comprising: 10007] a first varn and a second yarn, wherein the first varn is configured to weave a tubular fabric, and the second yarn Is configured to be accommodated in a tubular part of the tubular fabric; 10008] the first varn is prepared by blending a flame retardant adhesive and a first fibrous material, wherein the content of the flame retardant adhesive Is 40 % - 70 % and the content of the first fibrous material 1s 30 % - 60 % 1n mass percent: 100049] the second varn 1s prepared by blending modaerylic fibers and a second fibrous material, wherein the content of modacrylic fibers is 30% - 60 % and the content of the second fibrous material 1s 40 % - 70 % in mass percent. {00101 The first yarn prepared by blending the flame retardant adhesive and the first fibrous material blending has a high flame retardant performance, and the second varn prepared by blending modacrylic fibers and the second fibrous material has a high flame retardant and heat insulation performance and a high thermal expansion performance, so that a tubular fabrie weaved by the first yarn and the second yarn has a good flame retardant and heat insulation effect.

Moreover, a plurality of second varns are accommodated inside the tubular part, and the second yarn can prop up the tubular part after thermal expansion, so that more air may enter the tubular part, and the heat insulation effect may be improved.

Further, the second yarn props up the tubular part, so that the tubular part will protrude outward.

When a protective suit is made of such a tubular fabric, the protruding tubular part makes the external heat far away from the human body, and the heat will be dissipated after being buffered by the protruding tubular part, thereby lowering the hurt of heat on human body.

At the same time, because the second yarn props up the tubular part, the tubular part of the whole fabric will be firmer and less deformable, {0011} In other embodiments of the invention, the above first fibrous material comprises at least two selected from aramid fiber 1313, aramid fiber 1414, aromatic polysulfone fiber or polyimide, 100121 Aramid fiber 1313, aramid fiber 1414, aromatic polysulfone fiber and polyimide all have excellent high temperature resistance, flame retardant performance, thermal deformation and aging resistance and electric msulativity.

Therefore, the first varn made of the above material has the performances of flame retardant, thermal aging resistance and electrical insulation, ete., so that if can be used for preparing protective suits with a good heat insulation effect. 10013] In other embodiments of the invention, the yarn count of the above first yarn Is 60s/2 ~ 155/2. 10014] A weaved tubular fabric with a yarn count in the above range has the effects of high strength, fluffiness and softness. 10015] In other embodiments of the vention, the above second fibrous material comprises at least two selected from aramid fiber 1313, aramid fiber 1414 or poly aromatic oxadiazole.

[0016] Aramid fiber 1313, aramid fiber 1414 and poly aromatic oxadiazole have excellent high temperature resistance, flame retardant performance, thermal deformation and aging resistance and electric insulativity. Therefore, the first yarn made of the above material has the performances of flame retardant, thermal aging resistance and electrical insulation, etc, so that it can be used for preparing protective sults with a good heat insulation effect. {00171 In other embodiments of the invention, the yarn count of the above second yarn is 80s/2 - 40s/2. {0018} The second varn with varn count in the above range has high strength and high thermal expansion performance.

[0019] In a second aspect of the invention, there provides a technical solution as follows. 0020] A method for preparing a yarn for a tubular fabric, comprising:

[0021] preparing a first yarn for weaving a tubular fabric by blending 40 % - 70 % of a flame retardant adhesive and 30 % - 60 % of a first fibrous material in mass percent and controlling a twist level to be above 60 twists/ 10cm; and {00221 preparing a second varn for being accommodated in a tubular part of the tubular fabric by blending 30 % - 60 % of modacrylic fibers and

40 % - 70 % of a second fibrous material in mass percent and controlling a twist level to he above 80 twists/10 em. {00231 By controlling the twist level above 60 twists/10 cm when blending the above flame retardant adhesive and the first fibrous material, a first yarn with high strength and high fluffiness and softness can be obtained. By controlling the twist level above 80 twists/10 ecm when blending the above modacrylic fibers and the second fibrous material, a second yarn with high strength and high thermal expansion performance can he obtained. A tubular fabric prepared by the first yarn and the second yarn not only has a good flame retardant and heat insulation effect, but also has high thermal deformation resistance and washing deformation resistance due to the high strength and high thermal expansion performance of the second varn, 0024] In other embodiments of the invention, when the above first varn is being prepared, the varn count is control as 60s - 15s for one-ply varn, and then two plies of yarn are combined.

{00251 When the second yarn is being prepared, the yarn count is control as 60s - 40s for one-ply varn, and then two plies of yarn are combined. {00261 The yarn count range may ensure the strength of the first yarn and the thermal expansion performance of the second varn.

{00271 In other embodiments of the invention, before blending the flame retardant adhesive and the first fibrous material, an antistatic treatment is further performed on the flame retardant adhesive and the first fibrous material, {0028} Before blending modacrylic fibers and the second fibrous material, an antistatic treatment is further performed on the modacrylic fibers and the second fibrous material.

{00291 By performing an antistatic treatment on the above raw material, static electricity on the raw material can be removed, so that the first yarn and the second varn prepared has a good antistatic performance.

[0030] In a third aspect of the invention, there provides a technical solution as follows. {00311 A heat-resistant warp tubular fabric, comprising: 10032] a plurality of tubular parts provided at intervals; 5 {00331 wherein the tubular parts are prepared by weaving a first yarn, and a plurality of second yarns are accommodated 1ns1de the tubular part; {0034} the first yarn is prepared by blending a flame retardant adhesive and a first fibrous material, wherein the content of the flame retardant adhesive is 40 25 - 70 % and the content of the first fibrous material is 30 % - 60 % in mass percent; and

[0035] the second yarn 1s prepared by blending modaerylic fibers and a second fibrous material, wherein the content of modacrylic fibers is 30 Y% - 60 % and the content of the second {ibrous material is 40 % - 70 % in mass percent.

{0036} The heat-resistant warp tubular fabric is made of the first varn and the second yarn, which has a good flame retardant and heat insulation effect. By embedding the second yarn inside the tubular part, the second varn can expand and prop up the tubular part when heated, so that more air can enter the tubular part, thus the heat insulation effect can be reinforced.

Further, the second varn props up the tubular part, so that the tubular part will protrude outward. When a protective suit is made of such a tubular fabric, the protruding tubular part makes the external heat far away from the human body, and the heat will be dissipated after being buffered by the protruding tubular part, thereby lowering the hurt of heat on human body.

At the same time, because the second yarn props up the tubular part, the tubular part of the whole fabric will be firmer and less deformable.

100371 In a fourth aspect of the invention, there provides a technical solution as follows. {00381 A heat insulation suit, comprising a heat-insulating comfort layer made of the above heat-resistant warp tubular fabric.

0039] The heat insulation suit has good heat insulation and flame retardant effect, good hand feeling and high durability, and is less deformable after being heated or washed.

BRIEF DESCRIPTION OF THE DRAWINGS 10040] In order to more clearly illustrate the technical solutions of the embodiments of the Invention, the drawings needed in the description of the embodiments will be briefly introduced below. Apparently, the drawings in the description below are only some embodiments of the invention, and other drawings may also be obtained by one of ordinary skills in the art according to these drawings without creative work.

{00411 Fig.l is a schematic diagram of a heat-resistant warp tubular fabric according to an embodiment of the invention,

DETAILED DESCRIPTION OF THE EMBODIMENTS {00421 In order to make the objects, technical solutions and advantages of the embodiments of the invention more apparent, the technical solutions In the embodiments of the invention will be described clearly and fully in conjunction with the drawings in the embodiments of the invention.

Apparently, the embodiments described are only a part of the embodiments of the invention, rather than being the whole embodiments, Generally, the components in the embodiments of the invention shown and described in the drawings may be arranged and designed in various different configurations, {00431 Therefore, the detailed description of the embodiments of the invention provided in the drawings below does not intend to limit the protection scope of the invention; instead, it only represents the embodiments selected in the invention. All other embodiments obtained by one skilled in the art based on the embodiments of the invention without creative effort will pertain to the protection scope of the invention.

10044] It should be noted that, in the drawings below, similar labels and letters represent similar items. Therefore, once an 1tem is defined In a drawing, no further definition or explanation needs to be given in the subsequent drawings.

{00451 Terms “first” and “second ”, etc. are merely used for distinguishing, rather than being construed as indicating or implying the relative importance.

{0046] In the embodiments, when no specific condition is indicated, a normal condition or a condition suggested by the manufacture will be employed, When the manufacture of a reagent or an instrument is not indicated, it may be a conventional product that is commercially available. 0047] Embodiments {0048} Referring to Fig. 1, a heat-resistant warp tubular fabric according to this embodiment includes a plurality of tubular parts provided at intervals, wherein the tubular parts are prepared by weaving a first yarn, and a plurality of second yarns are accommodated inside the tubular part.

[0049] H should be noted that, the tubular part 1s not fully filled by the second varns. In other words, only a part of the space inside each tubular part 1s filled by the second yarns, for example, only a half of the space inside each tubular part is filled. 100501 By accommodating a plurality of second yarns inside the tubular part, the thermal expansion of the second varn can function to support the tubular fabric made of the first yarn, so that the tubular part of the whole fabric will be firmer and less deformable, thereby solving the current common problem that the tubular fabric tends to deform after being washed or heated. Further, because the second yarn props up the tubular part, more air can enter the tubular part, thus the heat insulation effect will be reinforced. Moreover, the second yarn props up the tubular part, so that the tubular part will protrude outward. When a protective suit 1s made of such a tubular fabric, the protruding tubular part makes the external heat far away from the human body, and the heat will be dissipated after being buffered by the protruding tubular part, thereby lowering the hurt of heat on human body. At the same time, because the second varn props up the tubular part, the tubular part of the whole fabric will be firmer and less deformable. 10061] Further, the tubular parts are prepared by weaving a first varn. {00521 The first yarn is prepared by blending a flame retardant adhesive and a first fibrous maternal.

[0053] By blending the flame retardant adhesive and the first fibrous material, a first yarn with excellent flame retardant and heat insulation effect can be prepared,

[0054] Further, in mass percent, the content of the flame retardant adhesive is 40 26 - 70 %, and the content of the first fibrous material is 30 % - 60 %, 10055} Optionally, in mass percent, the content of the flame retardant adhesive 1s 50 % - 60 %, and the content of the first fibrous maternal 15 40 % - DÛ.

{00561 Optionally, in mass percent, the content of the flame retardant adhesive 1s 55 %, and the content of the first fibrous material is 45 2%.

10057] The first varn prepared in the above matching range not only has a good flame retardant and heat insulation performance, but also is easy for weaving, f0058] In some embodiments of the invention, the first fibrous material includes at least two selected from aramid fiber 1313, aramid fiber 1414 aramid fiber, aromatic polysulfone fiber or polyimide.

[0059] Aramid fiber 1313 has excellent high temperature resistance and flame retardant performance. Aramid fiber 1313 may be used at a high temperature of 220 °C for a long time without aging. The limiting oxygen index of aramid fiber 1313 is greater than 28 %, thus it belongs to flame-resisting fibers, which will not burn in the air or support combustion,

and has a self-extinguishing property. Moreover, aramid fiber 1313 has excellent electric insulativity. Therefore, when aramid fiber 1313 1s employed as the material for preparing the first yarn, the first varn prepared has the performances of flame retardant, thermal aging resistance and electrical insulation, efc., so that 1t can be used for preparing a protective suit.

{00601 Because of the rigidity of molecular chain, aramid fiber 1414 has a Iyotropic liquid crystal performance and tends to form an anisotropie texture in a solution under the action of shear force, thus it has high heat resistance, dimensional stability, high insulatibity and chemical resistance. Therefore, by employing aramid fiber 1414 as the material for preparing the first yarn, the first yarn prepared has the performances of flame retardant, thermal aging resistance and electrical insulation, ete. so that it can be used for preparing a protective suit.

{00611 Aromatic polysulfone fiber has remarkable flame resistance and thermal oxygen aging resistance. When heated in hot air of 300 °C for 100 h, the loss of strength will be less than 5 %, and the limiting oxygen index will exceed 33. The aromatic polysulfone fiber further has good electric msulativity, chemical resistance and radiation resistance, etc. Therefore, by employing aromatic polysulfone fiber as the material for preparing the first varn, the first varn prepared has the performances of flame retardant, thermal aging resistance and electrical insulation, ete, so that it can be used for preparing a protective suit.

[0062] Further, the flame retardant adhesive can further reinforce the bonding effect and flame retardant performance of the first yarn.

[0063] In some embodiments of the invention, the yarn count of the first yarn is 60s/2 - 15s/2. 10064] Optionally, the yarn count of the first yarn is selected as 50s/2 - 30s/2. {0065} Optionally, the yarn count of the first yarn is selected as 2868/2.

[0066] A weaved tubular fabric prepared by yarn count in the above range has the effects of high strength, fluffiness and softness. {00677 In some embodiments of the invention, the second yarn is prepared by blending modacrylic fibers and a second fibrous material.

{00681 Modacrylic fiber is formed by copolymerizing an acrylonitrile monomer and a vinyl compound containing a flame retardant element, which has an excellent flame retardant performance. The second yarn prepared by blending modacrylic fibers and the second fibrous material has a high flame retardant performance.

[0068] Further, in mass percent, the content of modaerylie fibers is 30 % - 60 %, and the content of the second fibrous material is 40 % - 70 Sá. {00701 Optionally, in mass percent, the content of modacrylie fibers is 40 % - 50 %, and the content of the second fibrous material is 50 % - 60 %. [00711 Optionally, In mass percent, the content of modacryhe fibers is 45 %, and the content of the second fibrous material 1s 55 %. {00721 The second varn prepared In the above matching range not only has good flame retardant performance, but also has high thermal expansion performance. 100731 In some embodiments of the invention, the second fibrous material includes at least two selected from aramid fiber 1313, aramid fiber 1414 or poly aromatic oxadiazole, {0074} Aramid fiber 1313, aramid fiber 1414 and poly aromatic oxadiazole all have excellent high temperature resistance, flame retardant performance, thermal deformation and aging resistance and electric insulativity, Therefore, the second varn made of the above material has the performances of flame retardant, thermal aging resistance and electrical insulation, etc. so that it can be used for preparing protective suits with a good heat insulation effect.

[0075] In some embodiments of the invention, the yarn count of the second yarn is 80s/2 - 40s/2.

f0076] Optionally, the yarn count of the second yarn is 558/2 - 453/2.

10077} Optionally, the yarn count of the second yarn is 50/2 - 468/2.

{00781 Optionally, the varn count of the second yarn is 48s/2.

{00791 The second yarn not only has good thermal resistance, but also has high thermal expansion performance.

[0080] A method for preparing a varn for a tubular fabric according to an embodiment of the invention includes: {00811 Step 51, preparing the first yarn: blending 40 % - 70 % of a flame retardant adhesive and 30 % - 60 % of a first fibrous material in mass percent, and controlling a twist level to be above 60 twists/10 em, thereby preparing a first yarn for weaving a tubular fabrie.

{003821 By controlling the twist level above 60 twists/10 em when blending the above flame retardant adhesive and the first fibrous material, a varn with high strength, fluffiness and softness can be obtained. A tubular fabric made of such a yarn has good hand feeling, high strength and is less deformable.

10083] In some embodiments of the invention, when the first varn is prepared, the yarn count is control as 60s - 15s for one-ply yarn, and then two plies are combined.

{0084} Optionally, when the first yarn 1s prepared, the varn count is controlled as 50s - 20s for one-ply yarn, and then two plies are combined,

[0085] Further, when the first yarn is prepared, the yarn count is controlled as 50s - 20s for one-ply varn, and then two phes are combined.

[0086] By controlling the yarn count of the first yarn in the above range, the strength of the first yarn can be ensured.

[0087] In some embodiments of the invention, before blending the flame retardant adhesive and the first fibrous maternal, an antistatic treatment 1s further performed on the flame retardant adhesive and the first fibrous material.

i2 f0088] By performing an antistatic treatment on the flame retardant adhesive and the first fibrous material, static electricity on the flame retardant adhesive and the first fibrous material can be removed, so that the first yarn prepared has good antistatic performance.

{00891 In some embodiments of the invention, the step of performing an antistatic treatment on the above flame retardant adhesive and first fibrous material includes: the flame retardant adhesive and the first fibrous material are treated with an antistatic agent solution having a weight concentration of 0.3 - 1 %, and are laid hermetically for 12 - 48 h under a temperature of 20% 1 °C and in a humidity of 65 + 2 %.

{0090} Further optionally, when the flame retardant adhesive and the first fibrous material are treated with an antistatic agent solution having a weight concentration of 0.3 - 1 %, the flame retardant adhesive and the first fibrous material may be soaked in the antistatic agent solution.

{0091} In other optional embodiments, an antistatic agent solution with a weight concentration of 0.3 - 1 % may be sprayed on the flame retardant adhesive and the first fibrous material.

{00921 In some embodiments of the invention, the step of blending the flame retardant adhesive and the first fibrous material includes: according to a preset weight ratio, the flame retardant adhesive and the first fibrous material after antistatic treatment are mixed, loosed and cleaned, and then one-passage carding is performed by a cover carding machine to form wool top of 3.0 - 5.0 g/10 m, and then a drawing process is performed. wherein 8-top three-passage drawing is employed, with a drawing quantity of 4,0- 6.5 g/10 m. Then, the drawn thread is fed into a roving machine, the twist level is controlled above 60 twists/10 em, and the roving twist is S twist.

[0093] Step S2, preparing the second yarn: blending 30 % - 60 % of modaerylie fibers and 40 % - 70 % of a second fibrous material in mass percent, and controlling a twist level to be above 80 twists/10 cm, thereby preparing a second yarn. {00941 By controlling the twist level above 80 twists/10 cm when blending the above modacrylic fibers and the second fibrous material, a yarn with high strength and high thermal expansion performance can be obtamed. Such yarn has good thermal expansion performance. 100951 In some embodiments of the invention, when the second varn 15 prepared, the yarn count 1s control as 60s - 40s for one-ply var, and then two plies are combined.

[0098] Optionally, when the second yarn is prepared, the yarn count is controlled as 55s - 45s for one-ply varn, and then two plies are combined. {00971 Optionally, when the second yarn is prepared, the varn count is controlled as 50s - 46s for one-ply yarn, and then two plies are combined. 100981 By controlling the yarn count of the above second yarn in the above range, the strength and thermal expansibility of the second yarn can he ensured.

10099] In some embodiments of the invention, before blending modacryhe fibers and the second fibrous material, an antistatic treatment is further performed on the modacrylie fibers and the second fibrous material.

{0100} By performing an antistatic treatment on modacrylic fibers and the second fibrous material, static electricity on the modacrylic fibers and the second fibrous material can be removed, so that the second yarn prepared has good antistatic performance.

{01011 In some embodiments of the invention, the step of performing an antistatic treatment on the above modacrylic fibers and second fibrous material includes: 101021 the modacrylic fibers and the second fibrous material are treated with an antistatic agent solution having a weight concentration of

0.5 - 1.2 9%, and are laid hermetically for 15-36 h under a temperature of 20x 1 °C and in a humidity of 65 + 2 %.

f0103] Optionally, when the modaerylie fibers and the second fibrous material are treated with an antistatic agent solution having a weight concentration of 0.5 - 1.2 %, modacrylic fibers and the second fibrous material may be soaked in the antistatic agent solution.

{0104} In other optional embodiments, an antistatic agent solution having a weight concentration of 0.5 - 1.2 % may be sprayed on the modacrylic fibers and the second fibrous material.

{01056} In some embodiments of the invention, the step of blending modacrylic {fibers and the second fibrous material includes: according to a preset weight ratio, the modacrylic fibers and the second fibrous material after antistatic treatment are mixed, loosed and cleaned, and then one-passage carding is performed by a cover carding machine to form wool top of 4 - 6 g/10 m, and then a drawing process is performed, wherein 8-top three-passage drawing is emploved, with a drawing quantity of 2,5 - 3.5 g/10 m. Then, the drawn thread is fed into a roving machine, the twist level is controlled to be above 80 twists/10 cm, and the roving twist 1s 5S twist, 10106] A heat-resistant warp tubular fabric according to an embodiment of the invention includes: {01071 A plurality of tubular parts provided at intervals, wherein the tubular parts are prepared by weaving a first yarn, and a plurality of second varns are accommodated inside the tubular part, The first yarn is prepared by blending a flame retardant adhesive and a first fibrous material, wherein the content of the flame retardant adhesive Is 40 % - 70 % and the content of the first fibrous material is 30 % - 60 % in mass percent. The second yarn 1s prepared by blending modacrylic fibers and a second fibrous material, wherein the content of modacrylic fibers is 30 % - 60 % and the content of the second fibrous material 18 40 % - 70 % In mass percent. 10108] The first yarn and the second yarn are prepared by the method for preparing a first yarn and a second yarn according to the above embodiment.

{01091 Further, a tubular fabric is obtained by weaving the first yarn. A weaving method common In the field may be selected as the specific weaving method. For example, the tubular fabric may be formed via weaving or warp knitting techniques according to a preset woven pattern.

[0110] Further, the second varn 1s embedded inside the tubular part of the tubular fabric. 0111] In some embodiments of the invention, the first yarn 1s employed to weave the tubular fabric. For the schematic diagram of the tubular fabric prepared, reference may be made to Fig. 1, and the second yarn is accommodated inside the tubular part, {0112] By accommodating a plurality of second varns inside the tubular part, the second yarns are embedded inside the tubular part, The thermal expansion of the second yarn props up the tubular part, so that more air can enter the tubular part, and the heat insulation effect will be reinforced.

At the same time, because the second yarn props up the tubular part, the tubular part of the whole fabrie will be firmer and less deformable, and the tubular part will not deform after being washed or heated. Because the second yarn is placed inside the tubular part without being interlaced, it will be relatively easier to weave.

{0113} Optionally, the gram weight of the above heat-resistant warp tubular fabric may be 100 — 200 g, and the distance between the plurality of tubular parts provided at intervals may be 0.5 - 1.5 em.

10114] The heat-resistant warp tubular fabric may be applied to the comfort layer of a fire-fighting suit and a welding suit. Or, 1t may be applied to the inner layer of an electric arc protection suit. If has good heat insulation and flame retardant effect, good hand feeling and high durability, and 1s less deformable. {011561 A heat insulation suit according to an embodiment of the invention cludes a heat-insulating comfort layer made of the heat-resistant warp tubular fabric prepared in the above embodiment.

10116] The heat insulation suit has good heat insulation and flame retardant effect, good hand feeling and high durability, and 1s less deformable after being heated or washed. {01171 The characteristics and performance of the invention will be 19 further described in detain in conjunction with the embodiments; {0118] Embodiment 1 f0119] This embodiment provides a heat-resistant warp tubular fabric, which is prepared as follows.

[0120] Preparing the first yarn: An antistatic agent solution having a 16 weight concentration of 0.3 % 1s sprayed on a flame retardant adhesive with a mass percent of 40 % and a first fibrous material with a mass percent 60 %. The first fibrous material includes aramid fiber 1313 and aramid fiber 1414 in a mass ratio of 1 : 1. Then, they are laid hermetically for 24 h under a temperature of 20 + 1 °C and in a humidity of 65 + 2 %. Then, they are further mixed, loosed and cleaned, and then one-passage carding is performed by a cover carding machine to form wool top of 3.5 g/10 m, and then a drawing process is performed, wherein 8-top three-passage drawing is employed, with a drawing quantity of 4.5 g/10 m. Then, the drawn thread in fed into a roving machine, the twist level is 60 twists/10 cm, and the roving twist Is S twist, {01211 Preparing the second yarn: An antistatic agent solution having a weight concentration of 0.8 % 1s sprayed on modacrylic fibers with a mass percent of 30 % and a second fibrous material with a mass percent of 70 %. Wherein, the second fibrous maternal includes aramid fiber 1313 and aramid fiber 1414 in a mass ratio of 1: 1. Then, they are laid hermetically for 24 h under a temperature of 20 + 1 °C and in a humidity of 65 + 2 %, Then, they are further mixed, loosed and cleaned, and then one-passage carding is performed by a cover carding machine to form wool top of 4 g/10 m, and then a drawing process is performed, wherein 8-top three-passage drawing is employed, with a drawing quantify of 3 ¢/10 m. Then, the drawn thread is fed into a roving machine, the twist level 1s 85 twists/10 em, and the roving twist 1s S twist. 10122] Weaving the heat-resistant warp tubular fabric: A tubular fabric is weaved by the first yarn, wherein the tubular part of the tubular fabric is woven in two layers to form a tubular shape, and the second yarn Is placed inside the tubular part to support the tubular part. Other parts are woven in plain weave. {0123} The weight of the heat-resistant warp tubular fabric woven is 100 g/m? and the distance between the tubular parts is 0.5 em.

10124] Embodiment 2 101251 This embodiment provides a heat-resistant warp tubular fabric, which is prepared as follows. {01261 Preparing the first yarn: An antistatic agent solution having a weight concentration of 0.6 % 1s sprayed on a flame retardant adhesive with a mass percent of 70 % and a first fibrous material with a mass percent of 30 %. The first fibrous material includes aromatic polysulfone fibers and polyimide in a mass ratio of 1 : 1. Then, they are laid hermetically for 24 h under a temperature of 20 £1 °C and in a humidity of 65 + 2 %, Then, they are further mixed, loosed and cleaned, and then one-passage carding is performed by a cover carding machine to form wool top of 4 g/10 m, and then a drawing process is performed, wherein 8-top three-passage drawing is employed, with a drawing quantify of 5 8/10 m. Then, the drawn thread is fed into a roving machine, the twist level 1s 70 twists/10 em, and the roving twist 1s S twist.

{01271 Preparing the second varn: An antistatic agent solution having a weight concentration of 0.8 % is sprayed on modacrylic fibers with a mass percent of 60 % and a second fibrous material with a mass percent of 40 %. Wherein, the second fibrous material includes aramid fiber 1313 and aramid fiber 1414 in a mass ratio of 1: 1. Then, they are laid hermetically for 24 h under a temperature of 20 + 1 °C and in a humidity of 65 + 2 %. Then, they are further mixed, loosed and cleaned, and then one-passage carding is performed by a cover carding machine to form wool top of 4.5 g/10 m, and then a drawing process is performed, wherein §-top three-passage drawing is employed, with a drawing quantity of 2.5 ¢/10 m.

Then, the drawn thread is fed into a roving machine, the twist level is 80 twists/10 cm, and the roving twist is S twist. {0128} Weaving the heat-resistant warp tubular fabric: A tubular fabric is weaved by the first yarn, wherein the tubular part of the tubular fabric is woven In two layers to form a tubular shape, and the second varn 18 placed inside the tubular part to support the tubular part.

The gram weight of the heat-resistant warp tubular fabric woven may be 100 g/m?®, and the distance between the tubular parts is 1.5 cm.

Other parts are woven in plain weave. 10129] Embodiment 3 10130] This embodiment provides a heat-resistant warp tubular fabrie, which is prepared as follows. {01311 Preparing the first yarn: An antistatic agent solution having a weight concentration of 0,5 % is sprayed on a flame retardant adhesive with a mass percent of 50 % and a first fibrous material with a mass percent of 50 %. The first fibrous material includes aromatic polysulfone fibers and polyimide in a mass ratio of 1 : 1, Then, they are laid hermetically for 30 h under a temperature of 20 + 1 °C and in a humidity of 65 + 2 %. Then, they are further mixed, loosed and cleaned, and then one-passage carding is performed by a cover carding machine to form wool top of 4 g/10 m, and then a drawing process is performed, wherein 8-top three-passage drawing is employed, with a drawing quantity of 5 g/10 m. Then, the drawn thread is fed into a roving machine, the twist level 18 75 twists/10 em, and the roving twist 1s S twist. {0132} Preparing the second varn: An antistatic agent solution having a weight concentration of 0.7 % 15 sprayed on modacrylic fibers with a mass percent of 55 % and a second fibrous material with a mass percent of 45 %. Wherein, the second fibrous material includes aramid fiber 1313 and poly aromatic oxadiazole In a mass ratio of 1 : 1. Then, they are laid hermetically for 24 h under a temperature of 20 2 1 °C and in a humidity of 65 £ 2 %. Then, they are further mixed, loosed and cleaned, and then one-passage carding is performed by a cover carding machine to form wool top of

4.6 g/10 m, and then a drawing process is performed, wherein 8-top three-passage drawing is employed, with a drawing quantity of 2.5 g/10 m. Then, the drawn thread is fed into a roving machine, the twist level is 90 twists/10 cm, and the roving twist is S twist. {01331 Weaving the heat-resistant warp tubular fabric: A tubular fabric is weaved by the first yarn, wherein the tubular part of the tubular fabric 1s woven in two layers to form a tubular shape, and the second yarn 1s placed side the tubular part to support the tubular part. The gram weight of the heat-resistant warp tubular fabric woven 15 150 g/m?, and the distance between the tubular parts is 1.0 em. Other parts are woven in plain weave, 10184] Embodiment 4 {0135] This embodiment provides a heat-resistant warp tubular fabric, which is prepared as follows.

[0186] Preparing the first yarn: An antistatic agent solution having a weight concentration of 0.5 % 1s sprayed on a flame retardant adhesive with a mass percent of 50 % and a first fibrous material with a mass percent of 50 %. The first fibrous material includes aromatic polysulfone fibers and polyimide m a mass ratio of 1:1. Then, they are laid hermetically for 30 h under a temperature of 20 + 1 °C and in a humidity of 65 + 2 %. Then, they are further mixed, loosed and cleaned, and then one-passage carding is performed by a cover carding machine to form wool top of 4 g/10 m, and then a drawing process is performed, wherein 8-top three-passage drawing is employed, with a drawing quantity of 5 g/10 m. Then, the drawn thread is fed into a roving machine, the twist level is 75 twists/10 em, and the roving twist 1s S twist. {01371 Preparing the second yarn: An antistatic agent solution having a weight concentration of 0.7 % 1s sprayed on modacrylic fibers with a mass percent of 55 % and a second fibrous material with a mass percent of 45 %, The second fibrous material includes aramid fiber 1313 and poly aromatic oxadiazole in a mass ratio of 1; 1, Then, they are laid hermetically for 24 h under a temperature of 20 £1 °C and in a humidity of 65 + 2 %, Then, they are further mixed, loosed and cleaned, and then one-passage carding is performed by a cover carding machine to form wool top of 4.6 g/10 m, and then a drawing process 1s performed, wherein 8-top three-passage drawing is employed, with a drawing quantity of 2.5 g/10 m. Then, the drawn thread is fed into a roving machine, the twist level 1s 80 twists/10 cm, and the roving twist 1s S twist. {0138} Weaving the heat-resistant warp tubular fabric: A tubular fabric is weaved by the first yarn, wherein the tubular part of the tubular fabric is woven in two layers to form a tubular shape, and the second yarn Is placed inside the tubular part to support the tubular part. The gram weight of the heat-resistant warp tubular fabric woven is 200 g/m?, and the distance between the tubular parts is 1.0 em. Other parts are woven in plain weave.

[0188] Comparative Example 1

[0140] A plain woven fabric is provided, which 1s woven by employing a first varn and a process the same as those of Embodiment 1, without a tubular part. The gram weight of the plain woven fabric is 100 g/m? 0141] Comparative Example 2

{0142] An ordinary tubular fabric is provided, which is woven by employing a first yarn and a process the same as those in Embodiment 3, but no second yarn 1s accommodated in the tubular part, The gram weight of the ordinary tubular fabric 1s 150 g/m?, and the distance between the tubular parts is 1.0 cm.

10143] Comparative Example 3 0144] An ordinary tubular fabric 1s provided, which is woven by employing a first yarn and a process the same as those in Embodiment 4, but no second yarn 1s accommodated in the tubular part. The gram weight of the ordinary tubular fabrie 1s 200 g/m? and the distance between the tubular parts is 1.0 em. 0145] Experimental Example {0146} The performance of the heat-resistant warp tubular fabric according to Embodiments 1-4 and the plain woven fabric or ordinary tubular fabric according to Comparative Examples 1-3 will be tested to detect the heat insulation performance thereof, and the detection results are as follows: Table 1: Comparison Result of Thermal Protection (FPP value) Gram Weight Distance Between | TPP value | | Comparative Example | | | 100 — 593 | | 1 | | Comparative hae | | 150 | 1.0 8.93 | Embodiment 4 13.76 | ; Comparative Example | | i 4 i i

{01471 TPP value reflects the thermal protection ability of a fabric on the combined action of thermal radiation and thermal convection. The greater the TPP value ts, the better the thermal protection performance, z.e., the heat insulation performance, of the fabric will be; and on the contrary, the smaller the TPP value Is, the worse the heat insulation performance will be.

In Table 1, the TPP value 1s measured by a thermal protection performance tester according to standard NFPA1976, {0148} It may be seen from the contrast between Embodiment 1 and Comparative Example 1 in Table 1 that, for fabrics of the same gram weight, the TPP value of the heat-resistant warp tubular fabrie provided in Embodiment 1 is much greater than that of the plain woven fabric provided in Comparative Example 1. It may be seen from the contrast between Embodiment 3 and Comparative Example 2 that, for fabrics of the same gram weight and the same tubular pitch, the TPP value of the heat-resistant warp tubular fabric provided in Embodiment 3 18 much greater than that of the ordinary tubular fabric provided in Comparative Example 2. It may be seen from the contrast between Embodiment 4 and Comparative Example 2 that, for fabrics of the same gram weight and the same tubular pitch, the TPP value of the heat-resistant warp tubular fabric provided in Embodiment 4 18 much greater than that of the ordinary fubular fabric provided in Comparative Example 3. Therefore, the heat-resistant warp tubular fabric provided in the embodiment of the invention has better thermal protection performance that the plain woven fabric of the same gram weight, and the heat-resistant warp tubular fabric provided in the embodiment of the invention has better thermal protection performance than the ordinary tubular fabric of the same gram weight and the same tubular pitch. 10149] Additionally, 1t may be seen from the contrast between Embodiment 1 and Embodiment 2 in Table 1 that, for different distance between the tubular parts, tubular fabrics of the same gram weight all have a high TPP value, It may be seen from the contrast between Embodiment 3 and Embodiment 4 that, for tubular fabrics of different gram weight, tubular fabrics of the same distance between the tubular parts all have a high TPP value. Therefore, the heat-resistant warp tubular fabric according to the embodiment of the invention has good thermal protection performance.

{01501 The above description only shows preferred embodiments of the mvention, rather than limiting the scope of the invention. For one skilled in the art, the invention may have various modifications and variations.

Therefore, all modifications and equivalent substitutions made within the spirit and scope of the invention will fall into the protection scope of the invention, id

Claims

Conclusions

A yarn for a tubular fabric, characterized in that it comprises: a first yarn and a second yarn, wherein the first yarn is configured to weave a tubular fabric, and the second yarn is configured to be housed in the tubular fabric. part of the tubular fabric; the first yarn is prepared by mixing a flame retardant adhesive and a first fibrous material, wherein the content of the flame retardant adhesive is 40% - 70%, and the content of the first fibrous material is 30% - 60%, by weight; the second yarn is prepared by mixing modacrylic fibers and a second fibrous material, the content of the modacrylic fibers being 30% -60%, and the content of the second fibrous material 40% -70%, by weight.

The tubular fabric yarn of claim 1, characterized in that: the first fibrous material comprises at least two of aramid fiber 1313, aramid fiber 1414, aromatic polysulfone fiber or polyimide.

The tubular fabric yarn of claim 1, characterized in that: a yarn number of the first yarn is 60s / 2 ~ 15s / 2.

The tubular fabric yarn of claim 1, characterized in that:

the second fibrous material comprises at least two of aramid fiber 1313, aramid fiber 1414 or polyaromatic oxadiazole.

The tubular fabric yarn of claim 1, characterized in that: a yarn number of the second yarn is 60s / 2 ~ 40s / 2.

A method of preparing a tubular fabric yarn, comprising: preparing a first yarn for weaving a tubular fabric through 40% - 70% of a flame retardant adhesive and 30% - 60% of a first fibrous material. mix material by weight and control a degree of rotation so that it is above 60 turns / 10 cm; preparing a second yarn for accommodation in a tubular portion of the tubular fabric by mixing 30% - 60% of modacrylic fibers and 40% - 70% of a second fibrous material by weight and controlling a degree of twist so that it is above 80 turns / 10 cm.

The method of preparing a tubular fabric yarn according to claim 6, characterized in that: when the first yarn is prepared, the yarn number is set to 60s ~ 15s for single-ply yarn, and then two layers are combined; when the second yarn is prepared, the yarn number is set to 60s ~ 40s for single ply yarn, and then two layers are combined.

The method of preparing a tubular fabric yarn according to claim 6, characterized in that:

before mixing the flame retardant adhesive and the first fibrous material, an anti-static treatment is performed on the flame retardant adhesive and the first fibrous material; and before mixing the modacrylic fibers and the second fibrous material, an anti-static treatment is performed on the modacrylic fibers and the second fibrous material.

A heat resistant warp tubular fabric, characterized in that it comprises: a plurality of tubular members arranged at intervals; the tubular members are prepared by weaving a first yarn, and a plurality of second yarns are housed within the tubular member; the first yarn is prepared by mixing a flame retardant adhesive and a first fibrous material, wherein the content of the flame retardant adhesive is 40% -70% and the content of the first fibrous material is 30% -60% by weight; and the second yarn is prepared by mixing modacrylic fibers and a second fibrous material, wherein the content of the modacrylic fibers is 30% -60% and the content of the second fibrous material is 40% -70% by weight.

A protective suit, characterized in that it comprises a heat-insulating comfort layer made of a heat-resistant protective tubular fabric according to claim 9.