Multi-layer woven glass fiber cloth

Abstract

According to the technical scheme, the multi-layer woven glass fiber cloth is characterized in that the multi-layer woven glass fiber cloth comprises a first outer glass fiber layer, a second outer glass fiber layer and an inner glass fiber layer, the first outer glass fiber layer and the second outer glass fiber layer are arranged in an up-down stacked mode, and the inner glass fiber layer is located between the first outer glass fiber layer and the second outer glass fiber layer; the first outer glass fiber layer and the second outer glass fiber layer are formed by weaving warp yarns and weft yarns, the inner glass fiber layer is formed by weaving warp yarns, weft yarns and axial yarns, the warp yarns and the weft yarns are woven by adopting a 1 * 2 structure, and every two adjacent glass fiber layers are connected through a stringing and sleeving structure layer. According to the utility model, the weaving structure of the glass fiber cloth is improved, and the heat insulation property and the damage resistance of the glass fiber cloth are improved by arranging the axial yarns and the stringing and sleeving structure layer.

Description

Technical Field

[0001] The utility model relates to the field of glass fiber cloth products, and more particularly to a multi-layer woven glass fiber cloth. Background Art

[0002] Glass fiber is an inorganic non-metallic material with excellent performance. Glass fiber cloth produced using glass fiber is often used as a reinforcement, thermal insulation, and heat preservation material in composite materials. Existing glass fiber cloth is mostly made of glass fiber yarn as warp and weft, and is usually a single-layer structure. For example, Chinese utility model patent No. CN207877979U provides a glass fiber cloth, including a glass fiber cloth body formed by cross-weaving multiple warp groups and multiple weft groups. However, the thermal insulation and damage resistance of single-layer glass fiber cloth are poor, so the glass fiber cloth in the prior art has shortcomings. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a multi-layer woven glass fiber cloth, which utilizes the multi-layer structure to improve the thermal insulation of the glass fiber cloth and improve the woven structure of the glass fiber to improve the damage resistance of the glass fiber cloth.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A multi-layer woven glass fiber cloth includes a first outer glass fiber layer, a second outer glass fiber layer and an inner glass fiber layer, wherein the first outer glass fiber layer and the second outer glass fiber layer are stacked up and down, and the inner glass fiber layer is located between the first outer glass fiber layer and the second outer glass fiber layer, and the first outer glass fiber layer and the second outer glass fiber layer are woven from warp yarns and weft yarns, and the inner glass fiber layer is woven from warp yarns, weft yarns and axial yarns.

[0006] As a further improvement of the present invention, the warp yarns and the weft yarns are perpendicular to each other and are woven according to a 1×2 structure. The 1×2 structure is woven in such a way that each warp yarn first passes over one weft yarn and then passes under two weft yarns.

[0007] As a further improvement of the present invention, the axial yarn is inserted into the interweaving area along the axial direction and extends through the multiple interweaving areas along the axial direction. The axial direction is a direction that can form a 45° angle with the horizontal direction of the warp yarn, and the interweaving area is the overlapping area between the warp yarn and the weft yarn that cross each other up and down.

[0008] As a further improvement of the present invention, two adjacent glass fiber layers are connected by a string structure layer, and the string structure layer includes multiple layers of serpentine fiber bundles. Each layer of serpentine fiber bundles is formed by extending the fiber bundles between the two glass fiber layers along a horizontal direction of the glass fiber cloth and continuously serpentine during the extension process; wherein, between two adjacent layers of serpentine fiber bundles, the serpentine fiber bundles of the relatively upper layer shuttle and extend between the serpentine diameters formed by the serpentine fiber bundles of the relatively lower layer; wherein the radial yarns of the two glass fiber layers are in the gap between the serpentine diameters of the adjacent serpentine fiber layers.

[0009] As a further improvement of the present invention, the string structure layer also includes a tuck yarn, which is interspersed on two adjacent layers of serpentine fiber bundles and is wound and combined with the two adjacent layers of serpentine fiber bundles.

[0010] As a further improvement of the present invention, the loop yarn includes multiple horizontal parts and at least one loop part, each of the loop parts is integrally connected between two adjacent horizontal parts, and each of the loop parts is sleeved on at least one serpentine beam, which is a connecting beam between two adjacent serpentine diameters on a layer of serpentine fiber bundles.

[0011] As a further improvement of the present invention, the exterior of the first outer fiberglass layer and the second outer fiberglass layer further includes a flame retardant layer, an anti-wrinkle layer and / or a metal mesh layer.

[0012] As a further improvement of the present invention, a plurality of cavities are provided inside the flame retardant layer, and flame retardant fillers are contained inside the cavities.

[0013] As a further improvement of the present invention, the multiple cavities are spliced ​​together in a honeycomb structure, and the cavities are hexagonal.

[0014] As a further improvement of the present invention, the anti-wrinkle layer is woven from linen yarn.

[0015] The utility model increases the damage resistance of the glass fiber cloth by arranging axial yarns. When the glass fiber cloth is damaged and cracks appear, the axial yarns can effectively suppress the expansion of the cracks along the thickness direction, preventing the glass fiber cloth from breaking. In addition, the utility model connects each layer of glass fiber cloth through a string structure layer, thereby enhancing the damage resistance while ensuring the thermal insulation of the glass fiber cloth. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic cross-sectional view of the utility model;

[0017] Figure 2 This is a schematic diagram of the weaving structure of the warp yarn and the weft yarn in the present invention;

[0018] Figure 3 This is a schematic diagram of the weaving structure of the warp yarn, weft yarn and axial yarn in the present invention;

[0019] Figure 4 This is a schematic diagram of the string structure layer in the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the snake-bend fiber bundle in the utility model

[0021] Figure 6 This is a schematic structural diagram of the tuck yarn in the utility model;

[0022] Figure 7 It is a structural schematic diagram of the flame retardant layer in the present invention.

[0023] Figure numerals: 1. First outer glass fiber layer; 2. Second outer glass fiber layer; 3. Inner glass fiber layer; 4. Flame retardant layer; 5. Anti-wrinkle layer; 6. Metal mesh layer; 7. Weft yarn; 8. Warp yarn; 9. Axial yarn; 10, 11, 12. Snake fiber bundle; 13. Loop yarn; 14. Horizontal part; 15. Loop part; 16. Snake diameter; 17. Snake beam. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solution of the present invention, rather than limitations of the technical solution of the present invention.

[0025] The term "and / or" in the following text simply describes an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " generally indicates an "or" relationship between the related objects.

[0026] Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom," "top," "inner," and "outer" refer to directions toward or away from the geometric center of a particular component, respectively.

[0027] In order to solve the problem that the single-layer glass fiber cloth has poor thermal insulation and damage resistance, Figure 1As shown, this embodiment provides a multi-layer woven glass fiber cloth, including a first outer glass fiber layer 1, a second outer glass fiber layer 2 and an inner glass fiber layer 3. The first outer glass fiber layer 1 and the second outer glass fiber layer 2 are stacked up and down, and the inner glass fiber layer 3 is located between the first outer glass fiber layer 1 and the second outer glass fiber layer 2. The two adjacent glass fiber layers are connected by a string structure. The first outer glass fiber layer 1 and the second outer glass fiber layer 2 are woven from warp yarns and weft yarns, and the inner glass fiber layer 3 is woven from warp yarns, weft yarns and axial yarns.

[0028] This embodiment provides a multi-layer structure for the glass fiber cloth, improves the thermal insulation of the glass fiber cloth by increasing the thickness, and adds axial yarns to the inner glass fiber layer 3, increasing the complexity of the weaving. When the glass fiber cloth is damaged and cracks appear, the complexity of the weaving limits the uncontrolled expansion of the cracks, and the axial yarns effectively suppress the expansion of the cracks along the thickness direction, preventing the glass fiber layer from breaking, thereby improving the damage resistance of the glass fiber cloth.

[0029] Further, such as Figure 2 As shown, this embodiment provides a weaving method for warp yarns and weft yarns. The warp yarns and weft yarns in the three glass fiber layers of this embodiment all adopt this weaving method, specifically: the warp yarns 8 and the weft yarns 7 are perpendicular to each other and are woven according to a 1×2 structure. The 1×2 structure is woven in such a way that each warp yarn first passes over one weft yarn and then passes under two weft yarns.

[0030] This embodiment uses a 1×2 structure to enable the glass fiber cloth to bear more bending load when subjected to bending, thereby preventing the glass fiber cloth from breaking.

[0031] Furthermore, if Figure 3 As shown, in this embodiment, axial yarns 9 are added to the inner glass fiber layer 3. The axial yarns 9 are inserted into the interweaving area along the axial direction and extend in multiple interweaving areas along the axial direction. The axial direction is a direction that can form a 45° angle with the horizontal direction of the warp yarns, and the interweaving area is the overlapping area between the warp yarns and weft yarns that cross each other up and down.

[0032] In this embodiment, by adding the axial yarn 9, the crack propagation along the thickness direction is effectively suppressed, the crack propagates along the axial direction, and the glass fiber layer is prevented from breaking.

[0033] In this embodiment, only axial yarns are added to the inner glass fiber layer 3. If the outer glass fiber layer contains axial yarns, when the damage is relatively light, the axial yarns will cause the cracks to expand in the axial direction, which can effectively prevent the outer glass fiber layer from breaking. However, when the damage is relatively heavy, the method of expanding the cracks in the axial direction is not enough to prevent the outer glass fiber layer from breaking. On the contrary, the axial cracks will cause global damage to the outer glass fiber layer, which will seriously affect the performance of the glass fiber cloth.

[0034] Therefore, in this embodiment, only axial yarns are set in the inner fiber layer 3. When the damage is severe, the cracks extend along the thickness direction. Since the outer glass fiber layer is not provided with axial yarns, the outer glass fiber layer will only suffer a small range of local damage in the axial direction, and most of the damage is concentrated in the thickness direction, causing the outer glass fiber layer to deform along the thickness direction, thereby offsetting most of the damage energy. At this time, the role of the axial yarns 9 in the inner glass fiber layer 3 can be better exerted, and since the outer glass fiber layer has only suffered a small range of local damage, the performance of the glass fiber cloth is also less affected.

[0035] Furthermore, a plurality of axial yarns may be arranged at equal intervals in the inner glass fiber layer 3 to further improve the performance of the glass fiber cloth.

[0036] Furthermore, this embodiment provides a method for connecting multiple glass fiber layers, such as Figure 4 and Figure 5 As shown, two adjacent glass fiber layers are connected by a string structure layer, and the string structure layer includes multiple layers of serpentine fiber bundles (10, 11, 12). Each layer of serpentine fiber bundles is formed by extending the fiber bundles between the two glass fiber layers along a horizontal direction of the glass fiber cloth and continuously serpentine during the extension process; wherein, between two adjacent layers of serpentine fiber bundles, the relatively upper layer of serpentine fiber bundles shuttles and extends between the serpentine diameters 16 formed by the relatively lower layer of serpentine fiber bundles; wherein the radial yarns 8 of the two glass fiber layers are in the gap between the serpentine diameters 16 of the adjacent serpentine fiber layers.

[0037] In the prior art, a single layer of fiber bundles is typically used to connect the two glass fiber layers. Compared to the prior art, the interwoven structure provided in this embodiment creates a thicker braid between the two glass fiber layers, further enhancing the heat resistance of the glass fiber cloth while also protecting the inner fiber layer 3. Furthermore, the structure composed of multiple layers of serpentine fiber bundles possesses a certain degree of elasticity, preventing the glass fiber layers from separating when the glass fiber cloth is subjected to longitudinal tension.

[0038] Further, such as Figure 6 As shown, the string structure layer also includes tuck yarns 13, which are interspersed and arranged on two adjacent layers of serpentine fiber bundles and are wound and combined with the two adjacent layers of serpentine fiber bundles. The tuck yarns 13 include multiple horizontal portions 14 and at least one tuck portion 15. Each tuck portion 15 is integrally connected between two adjacent horizontal portions 14. Each tuck portion 15 is sleeved on at least one serpentine beam 17, which is a connecting beam between two adjacent serpentine diameters 16 on a layer of serpentine fiber bundles.

[0039] Since each layer of serpentine fiber bundles in the string structure layer is interconnected, when the fiber bundles of a layer are snagged, it is easy to affect the entire string structure layer. Therefore, this embodiment adds a loop yarn 13 between two adjacent layers of serpentine fiber bundles, and fixes the two adjacent layers of serpentine fiber bundles through the loop portion 15 to reduce the impact of snags.

[0040] The warp yarns, weft yarns, axial yarns, and string structure layers used in this embodiment are all made of glass fibers.

[0041] Further, such as Figure 1 As shown, a flame retardant layer 4, an anti-wrinkle layer 5 and / or a metal mesh layer 6 can be provided outside the first outer glass fiber layer 1 and the second outer glass fiber layer 2 to better protect the glass fiber and improve the performance of the glass fiber cloth.

[0042] Specifically, such as Figure 7 As shown, the flame retardant layer 4 is provided with multiple cavities inside, and the cavities are filled with flame retardant fillers, which are aluminum hydroxide. The multiple cavities are spliced ​​together in a honeycomb structure to improve the stability of the flame retardant layer. The cavities are hexagonal.

[0043] Furthermore, the anti-wrinkle layer 5 is woven from linen yarn.

[0044] The embodiment of the present application provides a multi-layer woven glass fiber cloth, which improves the thermal insulation of the glass fiber cloth through the multi-layer structure, and adds axial yarns to improve the damage resistance of the glass fiber cloth, thereby having higher practicality.

[0045] The above are only preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A multi-layer woven glass fiber cloth, characterized in that: The invention comprises a first outer glass fiber layer, a second outer glass fiber layer and an inner glass fiber layer, wherein the first outer glass fiber layer and the second outer glass fiber layer are stacked up and down, the inner glass fiber layer is located between the first outer glass fiber layer and the second outer glass fiber layer, the first outer glass fiber layer and the second outer glass fiber layer are woven from warp yarns and weft yarns, and the inner glass fiber layer is woven from warp yarns, weft yarns and axial yarns.

2. The multi-layer woven glass fiber cloth according to claim 1, characterized in that: The warp yarns and the weft yarns are perpendicular to each other and are woven in a 1×2 structure. The 1×2 structure is woven in such a way that each warp yarn first passes over one weft yarn and then passes under two weft yarns.

3. The multi-layer woven glass fiber cloth according to claim 1, characterized in that: The axial yarn is inserted into the interweaving area along the axial direction and extends through the multiple interweaving areas along the axial direction. The axial direction is a direction that can form a 45° angle with the horizontal direction of the warp yarn. The interweaving area is the overlapping area between the warp yarn and the weft yarn that cross each other up and down.

4. The multi-layer woven glass fiber cloth according to claim 1, characterized in that: Two adjacent glass fiber layers are connected by a string structure layer, and the string structure layer includes multiple layers of serpentine fiber bundles. Each layer of serpentine fiber bundles is formed by extending the fiber bundles between the two glass fiber layers along a horizontal direction of the glass fiber cloth and continuously serpentine during the extension process; wherein, between two adjacent layers of serpentine fiber bundles, the serpentine fiber bundles of the relatively upper layer shuttle and extend between the serpentine diameters formed by the serpentine fiber bundles of the relatively lower layer; wherein the warp yarns of the two glass fiber layers are in the gaps between the serpentine diameters of the adjacent serpentine fiber layers.

5. The multi-layer woven glass fiber cloth according to claim 4, characterized in that: The string structure layer also includes tuck yarns, which are interspersed on two adjacent layers of serpentine fiber bundles and are wound and combined with the two adjacent layers of serpentine fiber bundles.

6. The multi-layer woven glass fiber cloth according to claim 5, characterized in that: The tuck yarn includes multiple horizontal parts and at least one tuck part, each of the tuck parts is integrally connected between two adjacent horizontal parts, and each of the tuck parts is sleeved on at least one serpentine beam, which is a connecting beam between two adjacent serpentine diameters on a layer of serpentine fiber bundles.

7. The multi-layer woven glass fiber cloth according to claim 1, characterized in that: The exteriors of the first outer fiberglass layer and the second outer fiberglass layer further include a flame retardant layer, an anti-wrinkle layer and / or a metal mesh layer.

8. The multi-layer woven glass fiber cloth according to claim 7, characterized in that: A plurality of cavities are provided inside the flame retardant layer, and flame retardant fillers are contained in the cavities.

9. The multi-layer woven glass fiber cloth according to claim 8, characterized in that: The multiple cavities are connected to each other in a honeycomb structure, and the cavity is hexagonal.

10. The multi-layer woven glass fiber cloth according to claim 7, characterized in that: The anti-wrinkle layer is woven from linen yarn.

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