Fabric for preventing liquid metal splashing and its application

Abstract

The application provides a liquid metal splash-proof fabric and application thereof, and relates to the technical field of fabric. The fabric is a three-layer fabric, comprising an outer layer, a middle layer and an inner layer. The outer layer is prepared by double-yarn wrapping of yarn A and yarn B, wherein the yarn A is prepared from nylon 56 filaments and flame-retardant viscose short fibers; the yarn B is prepared from basalt filaments and polyimide short fibers; and the inner layer is prepared from meta-aramid filaments and blended yarn A, wherein the meta-aramid filaments are connecting yarns of the inner layer and the outer layer. The liquid metal splash-proof fabric prepared from the above structure and raw materials has the advantages of good economy, comfort, and no harmful substances to human body after high-temperature combustion.

Description

Technical Field

[0001] This invention relates to the field of fabric technology, and in particular to a fabric that protects against liquid metal splashes and its applications. Background Technology

[0002] Metal smelting is a crucial process for producing various metal products. During the operation, molten metal can easily fly out due to external forces and land on the operators. Its temperature is generally around 1000℃, which ordinary clothing cannot withstand.

[0003] While current protective suits against liquid metal splashes offer some protection, their thick fabrics result in poor comfort. Although some improvements have been made in recent years—for example, ZL202210195810.1 discloses a high-grade molten metal splash-resistant fabric and its preparation method, proposing a double-layer fabric structure. The outer layer uses a combination of polytetrafluoroethylene (PTFE) and wool to prevent liquid metal from burning through the fabric or adhering to its surface. However, PTFE produces highly toxic gases when burned at high temperatures, which is detrimental to human health. Meanwhile, the inner layer uses poly(p-phenylene terephthalamide) or poly(p-phenylene benzodioxazole) fibers, which, while possessing excellent high-temperature resistance and significantly improving the overall fabric's resistance to molten metal splashes, are difficult to obtain and expensive, hindering their widespread application.

[0004] Therefore, it is both necessary and urgent to research and develop a fabric that can effectively protect against liquid metal splashes, while also being economical, comfortable to wear, and free of harmful substances after high-temperature combustion.

[0005] In view of this, the present invention is hereby proposed. Summary of the Invention

[0006] The primary objective of this invention is to provide a fabric that protects against liquid metal splashes. This fabric effectively protects against liquid metal splashes while being economical, comfortable to wear, and does not produce harmful substances to the human body after high-temperature combustion.

[0007] The second objective of this invention is to provide an application of a fabric material that protects against liquid metal splashes in the manufacture of protective clothing for metal smelting.

[0008] In order to achieve the above-mentioned objectives of the present invention, the following technical solution is adopted:

[0009] The present invention provides a fabric material that protects against liquid metal splashes. The fabric material is a three-layer structure, including an outer layer, a middle layer and an inner layer.

[0010] The outer layer yarn is mainly made by double-wrapping yarn A and yarn B, wherein:

[0011] Yarn A is mainly made of nylon 56 filament and flame-retardant viscose staple fiber;

[0012] Yarn B is mainly made of basalt filaments and polyimide staple fibers;

[0013] The inner layer yarn is mainly made of meta-aramid filament and blended yarn A, wherein: meta-aramid filament is the connecting yarn between the inner and outer layers;

[0014] Blended yarn A is made by blending polyimide and flame-retardant viscose fiber.

[0015] Furthermore, during the spinning of yarn B, polyimide staple fibers are coated on the outer layer of basalt filaments.

[0016] Furthermore, the fineness of the basalt filaments is 8.0–9.8 tex.

[0017] Furthermore, the ratio of meta-aramid filaments in the inner layer yarn to the yarn arrangement of blended yarn A is 1:20 to 1:30.

[0018] Furthermore, the meta-aramid filament is a meta-aramid filament of 60D to 100D.

[0019] Furthermore, the ratio of polyimide to flame-retardant viscose fiber in the blended yarn A is 2:8 to 4:6.

[0020] Furthermore, the intermediate layer is mainly obtained by blending polyimide and meta-aramid;

[0021] The blending ratio of polyimide to meta-aramid is 3:7 to 5:5.

[0022] Furthermore, the connection method by which the meta-aramid filaments connect the inner and outer layers includes:

[0023] It can be at least one of the following: inner warp connecting to outer warp, outer warp connecting to inner warp, or combined connection.

[0024] Furthermore, the junction shape of the meta-aramid filaments connecting the inner and outer layers includes at least one of a square, hexagon, triangle, or rhombus.

[0025] The present invention provides the application of the above-mentioned anti-liquid metal splash fabric in the preparation of protective clothing for metal smelting.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] The fabric for preventing liquid metal splashes provided in this application is a three-layer structure fabric, including an outer layer, a middle layer, and an inner layer. The outer, middle, and inner layers of the three-layer structure fabric are all made of flame-retardant fiber raw materials. Specifically: the inner layer of the fabric is mainly made of meta-aramid filament and blended yarn A, with the meta-aramid filament serving as the connecting yarn between the inner and outer layers; the outer layer is mainly made of yarn A and yarn B through double-wrap, with yarn A mainly made of nylon 56 filament and flame-retardant viscose staple fiber; and yarn B mainly made of basalt filament and polyimide staple fiber.

[0028] This application, through the structure and material settings of the aforementioned fabric, offers the following advantages over existing liquid metal splash-resistant fabrics:

[0029] 1. The inner and outer layers are connected by meta-aramid filaments. After heat setting, the nylon 56 fibers in the outer fabric shrink, and since the outer yarn is double-wound, the nylon 56 binds the other fiber materials within it. This tightens the fiber gaps in the outer layer, causing the entire outer layer to shrink. However, the meta-aramid filaments in the inner layer are bonded to the outer layer, and the shrinkage of the inner material during heat setting is not significant. Due to the constraint effect of the upper and lower bonding points, the fabric of the inner layer remains almost unchanged.

[0030] Therefore, due to the effect of the joints, the outer layer shrinks, causing the inner layer to arch. This provides more physical space for the middle layer, forming a physical air insulation layer. This structure can introduce still air to increase the thermal insulation performance of the surface.

[0031] 2. The outer yarn has a three-layer wrapping structure, namely, nylon 56 is wrapped with flame-retardant viscose yarn once, polyimide is wrapped with basalt filament yarn once, and then the two types of yarn are wrapped together again. This yarn structure effectively controls yarn hairiness and is not conducive to liquid metal hanging on the fabric.

[0032] 3. The outer yarn contains basalt filaments with a melting temperature of about 1500℃, which effectively increases the fabric's heat resistance and durability.

[0033] 4. The inner layer yarn is made of meta-aramid filament and blended yarn A. Blended yarn A, which is made by blending polyimide and flame-retardant viscose fiber, has good moisture absorption properties, which can improve the wearing comfort of the fabric.

[0034] Therefore, the fabric material for preventing liquid metal splashes obtained in this application can effectively protect against liquid metal splashes, while also being economical, comfortable to wear, and will not produce substances harmful to the human body after high-temperature combustion.

[0035] The liquid metal splash-proof fabric provided by this invention can be widely used in the preparation process of protective clothing for metal smelting. Attached Figure Description

[0036] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0037] Figure 1 This is a fabric structure diagram of the liquid metal splash-proof fabric provided in Embodiment 1 of the present invention. Detailed Implementation

[0038] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] According to one aspect of the present invention, a fabric material that protects against liquid metal splashes, the fabric material being a three-layer structure fabric comprising an outer layer, a middle layer, and an inner layer;

[0040] The outer layer yarn is mainly made of yarn A and yarn B through double-wrap, wherein: yarn A is mainly made of nylon 56 filament and flame-retardant viscose staple fiber; yarn B is mainly made of basalt filament and polyimide staple fiber;

[0041] The inner layer yarn is mainly made of meta-aramid filament and blended yarn A, wherein: meta-aramid filament is the connecting yarn between the inner and outer layers;

[0042] Blended yarn A is made by blending polyimide and flame-retardant viscose fiber.

[0043] The fabric for protecting against liquid metal splashes provided in this application is a three-layer structure, including an outer layer, a middle layer, and an inner layer. The inner layer is mainly made of meta-aramid filament and blended yarn A, with the meta-aramid filament serving as the connecting yarn between the inner and outer layers. The outer layer is mainly made of yarn A and yarn B through double-wrapping, wherein: yarn A is mainly made of nylon 56 filament and flame-retardant viscose staple fiber; and yarn B is mainly made of basalt filament and polyimide staple fiber.

[0044] This application, through the structure and material settings of the aforementioned fabric, offers the following advantages over existing liquid metal splash-resistant fabrics:

[0045] 1. The inner and outer layers are connected by meta-aramid filaments. After heat setting, the nylon 56 fibers in the outer fabric shrink, and the outer yarn is double-wound, with the nylon 56 restraining the other fiber materials. This tightens the fiber gaps in the outer layer, causing the entire outer layer to shrink. However, the inner yarn is bonded to the outer layer, and the shrinkage of the inner material during heat setting is not significant. Due to the restraint effect of the upper and lower bonding points, the fabric of the inner layer remains almost unchanged.

[0046] Therefore, due to the effect of the joints, the outer layer shrinks, causing the inner layer to arch. This provides more physical space for the middle layer, forming a physical air insulation layer. This structure can introduce still air to increase the thermal insulation performance of the surface.

[0047] 2. The outer yarn has a three-layer wrapping structure, namely, nylon 56 is wrapped with flame-retardant viscose yarn once, polyimide is wrapped with basalt filament yarn once, and then the two types of yarn are wrapped together again. This yarn structure effectively controls yarn hairiness and is not conducive to liquid metal hanging on the fabric.

[0048] 3. The outer yarn contains basalt filaments with a melting temperature of about 1500℃, which effectively increases the fabric's heat resistance and durability.

[0049] 4. The inner layer yarn is made of meta-aramid filament and blended yarn A. Blended yarn A, which is made by blending polyimide and flame-retardant viscose fiber, has good moisture absorption properties, which can improve the wearing comfort of the fabric.

[0050] Therefore, the fabric material for preventing liquid metal splashes prepared in this application can effectively protect against liquid metal splashes, while also being economical, comfortable to wear, and will not produce substances harmful to the human body after high-temperature combustion.

[0051] In a preferred embodiment of the present invention, when yarn B is spun, polyimide staple fibers are coated on the outer layer of basalt filaments.

[0052] As a preferred embodiment, polyimide is made into roving from short fibers and wrapped around the outer layer of basalt filaments when spinning fine yarn. The polyimide fiber as the outer layer can effectively provide a flexible protective shell for basalt and is more conducive to exerting the long-lasting flame retardant effect of the two fibers.

[0053] In the preferred embodiment described above, the fineness of the basalt filaments is 8.0 to 9.8 tex.

[0054] As a preferred embodiment, the fineness of the basalt filaments is 8.0 to 9.8 tex. Basalt filaments within the selected fineness range have optimized flexibility and improve the performance of the fibers.

[0055] In a preferred embodiment of the present invention, the ratio of meta-aramid filaments in the inner layer to the yarn arrangement of blended yarn A is 1:20 to 1:30.

[0056] In a preferred embodiment, the yarn arrangement ratio of the meta-aramid filament to the blended yarn A is 1:20 to 1:30. The blended yarn A is composed of polyimide and viscose. The viscose gives the fabric better wearing comfort. The meta-aramid is used alternately to better connect the two layers of fabric.

[0057] In the preferred embodiment described above, the meta-aramid filament is a meta-aramid filament of 60D to 100D.

[0058] As a preferred embodiment, the above-mentioned 60D to 100D meta-aramid filaments have good flexibility and also utilize their filament modulus to support and connect the two layers of fabric.

[0059] In a preferred embodiment of the present invention, the ratio of polyimide to flame-retardant viscose fiber in the blended yarn A is 2:8 to 4:6.

[0060] As a preferred embodiment, the ratio of polyimide to flame-retardant viscose fiber is such that the flame-retardant viscose has a high standard moisture regain rate and a content of 60-80%, which gives the fabric better moisture absorption and improves the comfort of wearing the fabric.

[0061] In a preferred embodiment of the present invention, the intermediate layer is mainly obtained by blending polyimide and meta-aramid;

[0062] The blending ratio of polyimide to meta-aramid is 3:7 to 5:5.

[0063] As a preferred embodiment, the above-mentioned blending ratio of polyimide and meta-aramid is used. Both polyimide and meta-aramid are fibers with excellent flame retardant properties, but polyimide has superior performance and is more expensive. Balancing performance and economic cost, a 3:7 ratio is preferred.

[0064] In a preferred embodiment of the present invention, the connection method by which the meta-aramid filament connects the inner layer and the outer layer includes:

[0065] It can be at least one of the following: inner warp connecting to outer warp, outer warp connecting to inner warp, or combined connection.

[0066] In a preferred embodiment of the present invention, the junction shape of the meta-aramid filaments connecting the inner and outer layers includes at least one of a square, a hexagon, a triangle, or a rhombus.

[0067] According to one aspect of the present invention, the application of the above-mentioned anti-liquid metal splash fabric in the preparation of protective clothing for metal smelting.

[0068] The liquid metal splash-proof fabric provided by this invention can be widely used in the preparation process of protective clothing for metal smelting.

[0069] The technical solution of the present invention will be further described below with reference to the embodiments.

[0070] Example 1

[0071] A fabric material that protects against liquid metal splashes, the method for preparing the fabric includes the following steps:

[0072] 1. Provide outer, middle, and inner layer yarns:

[0073] (1) The outer layer yarn structure is a wrapped yarn structure. The outer layer yarn is mainly made by double-wrapping yarn A and yarn B, wherein:

[0074] Yarn A is made from nylon 56 filament and flame-retardant viscose staple fiber; the flame-retardant viscose is a staple fiber, which is made into roving and spun into fine yarn with nylon 56.

[0075] Yarn B is made from basalt filaments and polyimide staple fibers; the polyimide staple fibers are made into rovings, which are wrapped around the basalt filaments when spinning into fine yarns. The fineness of the basalt filaments is 8.0–9.8 tex.

[0076] The outer layer yarn has a fineness of 10s-20s, a warp density of 70-80 threads / inch, and a weft density of 40-50 threads / inch.

[0077] (2) The intermediate layer yarn is obtained by blending polyimide and meta-aramid, wherein the blending ratio of polyimide and meta-aramid is 3:7.

[0078] The middle layer yarn is a padding weft yarn, 40-50 yarns / inch.

[0079] (3) The inner layer yarn includes meta-aramid filament 100D and blended yarn A; meta-aramid filament 100D is the connecting yarn between the inner and outer layers;

[0080] The ratio of meta-aramid filaments in the inner layer yarn to the yarn arrangement of blended yarn A is 1:20;

[0081] Blended yarn A is made by blending polyimide and flame-retardant viscose fiber in a ratio of 2:8. Blended yarn A has a warp density of 40s / 1 to 60s / 1, a warp density of 120-140 ends / inch, and a weft density of 90-110 ends / inch.

[0082] 2. Fabric woven:

[0083] Figure 1 This is a fabric structure diagram of the liquid metal splash-proof fabric of this embodiment.

[0084] The outer, middle, and inner layer yarns are arranged according to... Figure 1 The fabric structure diagram shown illustrates the weaving method used to produce the fabric. Specifically, the outer and inner layers are connected via knots, and partial voids are created through delamination points. The weft pads are added in these voids, and after disintegration, they fill the voids, forming the final intermediate layer.

[0085] 3. Heat setting treatment:

[0086] The woven fabric is heat-set to obtain a fabric that is resistant to liquid metal splashes.

[0087] The heat setting temperature is 200℃, the time is 30s, and the expansion rate is -5%.

[0088] Example 2

[0089] A fabric material that protects against liquid metal splashes, the preparation method of which, except for step (3):

[0090] Except for the ratio of meta-aramid filaments in the inner layer yarn to the yarn of blended yarn A being 1:30, the rest is the same as in Example 1.

[0091] Example 3

[0092] A fabric material that protects against liquid metal splashes, the preparation method of which, except for step (3):

[0093] Except for “the meta-aramid filament in the inner layer yarn is meta-aramid filament 60D”, the rest is the same as in Example 1.

[0094] Example 4

[0095] A fabric material that protects against liquid metal splashes, the preparation method of which excludes step (3):

[0096] Except for the ratio of polyimide to flame-retardant adhesive in blended yarn A being 4:6, everything else is the same as in Example 1.

[0097] Example 5

[0098] A fabric material that protects against liquid metal splashes, the preparation method of which excludes step (2):

[0099] Except for the fact that "the blending ratio of polyimide to meta-aramid in the intermediate layer yarn is 5:5", the rest is the same as in Example 1.

[0100] Comparative Example 1

[0101] This embodiment is the same as in Embodiment 1, except that the nylon 56 filament in yarn A is replaced with flame-retardant polyester filament.

[0102] Comparative Example 2

[0103] This embodiment is the same as in Embodiment 1, except that the basalt filament in yarn B is replaced with meta-aramid filament.

[0104] Comparative Example 3

[0105] In this embodiment, the blended yarn A is made from meta-aramid and flame-retardant viscose, but otherwise it is the same as in Example 1.

[0106] Comparative Example 4

[0107] This embodiment is the same as in Embodiment 1, except that the meta-aramid filament 100D in the inner layer yarn is replaced with meta-aramid filament 200D.

[0108] Comparative Example 5

[0109] This embodiment is the same as in Embodiment 1, except that the 100D meta-aramid filament in the inner layer yarn is replaced with 50D meta-aramid filament.

[0110] Comparative Example 6

[0111] In this comparative example, step (3) is divided as follows:

[0112] Except for the ratio of meta-aramid filaments in the inner layer yarn to the yarn of blended yarn A being 1:10, the rest is the same as in Example 1.

[0113] Comparative Example 7

[0114] In this comparative example, step (3) is divided as follows:

[0115] Except for the ratio of meta-aramid filaments in the inner layer yarn to the yarn of blended yarn A being 1:40, the rest is the same as in Example 1.

[0116] Comparative Example 8

[0117] In this comparative example, step (3) is divided as follows:

[0118] Except for the ratio of polyimide to flame-retardant adhesive in blended yarn A being 1:9, everything else is the same as in Example 1.

[0119] Comparative Example 9

[0120] In this comparative example, step (3) is divided as follows:

[0121] Except for the ratio of polyimide to flame-retardant adhesive in blended yarn A being 5:5, everything else is the same as in Example 1.

[0122] Comparative Example 10

[0123] In this comparative example, step (2) is divided as follows:

[0124] Except for the fact that "the blending ratio of polyimide to meta-aramid in the intermediate layer yarn is 7:3", the rest is the same as in Example 1.

[0125] Experimental Example 1

[0126] To demonstrate that the woven flame-retardant fabric prepared in this application can effectively protect against liquid metal splashes while also offering advantages such as cost-effectiveness and comfortable wear, the woven flame-retardant fabrics prepared in Examples 1-5 and Comparative Examples 1-10 were tested, and the results are shown in the table below:

[0127]

[0128]

[0129] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fabric facing for protection against liquid metal spatter, characterized in that, The fabric is a three-layer structure fabric, comprising an outer layer, an intermediate layer and an inner layer; wherein: The outer layer yarn is mainly prepared by double-yarn wrapping of yarn A and yarn B, the yarn A is prepared by nylon 56 filament and flame-retardant viscose staple fiber; the yarn B is prepared by basalt filament and polyimide staple fiber, and the polyimide staple fiber is coated on the outer layer of the basalt filament when the yarn B is spun; The intermediate layer yarn is mainly prepared by blending of polyimide and meta-aramid; the blending ratio of the polyimide and the meta-aramid is 3:7~5:5; The inner layer yarn is mainly prepared by meta-aramid filament and blended yarn A, the meta-aramid filament is the connecting yarn of the inner layer and the outer layer, and the blended yarn A is prepared by blending of polyimide and flame-retardant viscose fiber; The ratio of the polyimide and the flame-retardant viscose fiber in the blended yarn A is 2:8~4:

6.

2. The fabric facing of claim 1, wherein, The fineness of the basalt filament is 8.0~9.8 tex.

3. The fabric facing of claim 1, wherein, The yarn arrangement ratio of the meta-aramid filament in the inner layer yarn and the blended yarn A is 1:20~1:

30.

4. The fabric facing of claim 3, wherein, The meta-aramid filament is meta-aramid filament 60D~100D.

5. The liquid metal spatter resistant fabric of claim 1, wherein, The connecting mode of the meta-aramid filament connecting the inner layer and the outer layer comprises at least one of the following modes: The connecting mode of the meta-aramid filament connecting the inner layer and the outer layer comprises at least one of the following modes:

6. The liquid metal spatter resistant fabric of claim 1, wherein, The connecting mode of the meta-aramid filament connecting the inner layer and the outer layer comprises at least one of the following modes:

7. Use of the liquid metal splash-proof fabric according to any one of claims 1~6 in the preparation of metal smelting protective clothing.

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