A high-temperature-resistant strippable cloth, a preparation method and application thereof

Abstract

The application provides a high-temperature-resistant strippable cloth and a preparation method and application thereof. The high-temperature-resistant strippable cloth is obtained by weaving warp yarns and weft yarns, the warp yarns and the weft yarns are all core-sheath yarns, the sheath layer of the core-sheath yarns is PFA resin, and the core layer is glass fiber yarn. By using the core-sheath yarns with the sheath layer of PFA resin and the core layer of glass fiber yarn as the warp yarns and the weft yarns, the high-temperature resistance and the corrosion resistance of the obtained strippable cloth are effectively improved. The obtained strippable cloth also has a release effect, is easy to be stripped from the composite material in the processing and molding of the composite material, and thus does not cause the fiber to be left on the surface of the workpiece, so that the flatness of the obtained workpiece is good. Meanwhile, the obtained strippable cloth also has a certain plasticity, can be preheated and shaped according to the shape of a mold before use, and is especially suitable for application in the processing and molding of special-shaped workpieces.

Description

Technical Field

[0001] This invention belongs to the field of composite material molding technology, specifically relating to a high-temperature resistant peelable fabric, its preparation method, and its application. Background Technology

[0002] Composite materials have wide applications in aerospace components. Because spacecraft structures are complex and diverse, structural adhesives are frequently used for bonding. Therefore, a certain degree of roughness is needed on the surface of the composite material to improve the bond strength. Consequently, peelable fabrics are often used in composite material molding processes.

[0003] Currently, conventional peelable fabrics on the market are woven from polyester or nylon fibers. For example, CN213476231U discloses an antistatic peelable fabric for wind turbine blade molding, comprising composite warp yarns and composite weft yarns. The composite warp yarns include nylon high-strength industrial filament warp yarns, conductive warp yarns, and polyester high-strength industrial filament warp yarns arranged side by side, with the conductive warp yarns located between the nylon high-strength industrial filament warp yarns and the polyester high-strength industrial filament warp yarns. The composite weft yarns include nylon high-strength industrial filament weft yarns, conductive weft yarns, and polyester high-strength industrial filament weft yarns arranged side by side, with the conductive weft yarns located between the nylon high-strength industrial filament weft yarns and the polyester high-strength industrial filament weft yarns. The conductive warp yarns and conductive weft yarns include a core made of carbon fiber and polyester fibers covering the core yarns.

[0004] However, the temperature resistance of existing conventional peelable fabrics is basically between 180 and 200°C, which means they can only be used for curing and molding medium and low temperature prepregs. Furthermore, since peelable fabrics are composed of fibers, impregnating materials such as epoxy resin can easily penetrate into the fibers of the peelable fabric, making peeling difficult.

[0005] Therefore, developing a high-temperature resistant and easily peelable fabric remains a pressing technical problem that needs to be solved in this field. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the present invention aims to provide a high-temperature resistant peelable fabric, its preparation method, and its application. This high-temperature resistant peelable fabric can withstand temperatures up to 280°C, exhibits excellent high-temperature resistance and corrosion resistance, and possesses a self-release effect, making it easy to peel off from composite materials without leaving fiber residue on the surface of the part, thus resulting in a smooth surface. Furthermore, the high-temperature resistant peelable fabric also possesses a certain degree of plasticity, allowing for preheating and shaping according to the mold shape before use, preventing surface defects caused by fabric wrinkles. It is particularly suitable for application in the processing and molding of irregularly shaped parts.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] In a first aspect, the present invention provides a high-temperature resistant peelable fabric, which is woven from warp and weft yarns;

[0009] Both the warp and weft yarns are core-sheath yarns, and the sheath layer of the core-sheath yarn is PFA resin, while the core layer is glass fiber filament.

[0010] The high-temperature resistant peelable fabric provided by this invention is obtained by weaving a core yarn with a PFA resin outer layer and a glass fiber core layer, which is used as both warp and weft yarns. Using the PFA resin as the outer layer material effectively improves the high-temperature resistance and corrosion resistance of the core yarn, resulting in a peelable fabric with excellent high-temperature and corrosion resistance, capable of withstanding temperatures up to 280°C. Unlike traditional multi-yarn twisting, the core yarn has a very smooth and flat surface without pores, giving the high-temperature resistant peelable fabric a self-release effect. When used in composite material molding, the resin does not penetrate the fiber bundles, making it easy to peel off from the composite material and preventing fiber residue on the surface of the part, resulting in a smooth finished product. Furthermore, the high-temperature resistant peelable fabric provided by this invention also has a certain degree of plasticity, allowing for pre-heat setting according to the mold shape before use. This avoids the problem of wrinkles on curved surfaces caused by ordinary peelable fabrics, leading to surface defects in the finished product, making it particularly suitable for processing and molding irregularly shaped parts.

[0011] It should be noted that the "high temperature resistant peelable fabric" mentioned in this invention refers to a peelable fabric that can withstand temperatures of not less than 280°C, meaning that it does not have problems such as melting or cracking after being treated at 280°C for 6 hours.

[0012] It should also be noted that, in this invention, although both the warp and weft yarns are core-sheath yarns, and the sheath layer is made of PFA resin and the core layer is made of glass fiber filaments, this does not mean that the warp and weft yarns are completely identical. For example, the melt index of the PFA resin used in the sheath layer and the core layer may be different, or the specifications of the glass fiber filaments used in the sheath layer and the core layer may be different, or the mass ratio of the sheath layer and the core layer in the core-sheath yarn may be different.

[0013] In some preferred embodiments, the areal density of the high-temperature resistant peelable fabric is 70–400 g / m². 2 For example, 70g / m 2 100g / m 2 150g / m 2 200g / m 2 250g / m 2 300g / m 2 350g / m 2 Or 400g / m 2 wait.

[0014] In some preferred embodiments, the thickness of the high-temperature resistant peelable fabric is 0.06 to 0.2 mm, such as 0.06 mm, 0.08 mm, 0.1 mm, 0.12 mm, 0.14 mm, 0.16 mm, 0.18 mm, or 0.2 mm.

[0015] In some preferred embodiments, the warp density of the high-temperature resistant peelable fabric is 170 to 480 threads / 10cm, such as 170 threads / 10cm, 200 threads / 10cm, 250 threads / 10cm, 300 threads / 10cm, 350 threads / 10cm, 400 threads / 10cm, 450 threads / 10cm, or 480 threads / 10cm.

[0016] In some preferred embodiments, the weft density of the high-temperature resistant peelable fabric is 150 to 400 threads / 10cm, such as 150 threads / 10cm, 200 threads / 10cm, 250 threads / 10cm, 300 threads / 10cm, 350 threads / 10cm, or 400 threads / 10cm.

[0017] In some preferred embodiments, the glass fiber content in the core yarn is 30% to 50% by mass, for example, 30%, 32%, 34%, 36%, 38%, 40%, 42%, 44%, 46%, 48%, or 50%.

[0018] In some preferred embodiments, the PFA resin content in the core yarn is 50% to 70% by mass, for example, 50%, 52%, 54%, 56%, 58%, 60%, 62%, 64%, 66%, 68%, or 70%.

[0019] In some preferred embodiments, the glass fiber filaments include any one or a combination of at least two of D900 glass fiber filaments, D450 glass fiber filaments, or E225 glass fiber filaments.

[0020] In some preferred embodiments, the melt index of the PFA resin is 8 to 30 g / 10 min, such as 8 g / 10 min, 10 g / 10 min, 12 g / 10 min, 14 g / 10 min, 16 g / 10 min, 18 g / 10 min, 20 g / 10 min, 22 g / 10 min, 24 g / 10 min, 26 g / 10 min, 28 g / 10 min, or 30 g / 10 min; the test temperature for the above melt index is 372°C, and the load is 5 kg.

[0021] In some preferred embodiments, the weaving pattern is plain weave or twill weave.

[0022] In a second aspect, the present invention provides a method for preparing a high-temperature resistant peelable fabric as described in the first aspect, the method comprising the following steps:

[0023] (1) Glass fiber filaments are impregnated in molten PFA resin, taken out and cooled to set, to obtain core-sheath yarn;

[0024] (2) The obtained core yarn is used as warp and weft yarn to weave the high-temperature resistant peelable fabric.

[0025] The step (1) of the method for preparing the high-temperature resistant peelable fabric provided by the present invention is a continuous process in which the glass fiber filaments are moved and the cooling and shaping process is carried out in a mold, which can not only shape the PFA resin, but also remove excess PFA impregnation liquid as needed.

[0026] In some preferred embodiments, step (2) further includes a warping step using a warping machine before weaving.

[0027] In some preferred embodiments, the weaving described in step (2) is carried out on a rapier loom.

[0028] In some preferred embodiments, step (2) after weaving is completed, a heat setting step is also included.

[0029] Thirdly, the present invention provides an application of the high-temperature resistant peelable fabric as described in the first aspect in composite material molding.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] (1) The high-temperature resistant peelable fabric provided by the present invention can withstand a high temperature of 280°C and has excellent corrosion resistance;

[0032] (2) The high-temperature resistant peelable fabric provided by the present invention also has a release effect. When used in composite material molding, the resin will not wet the fiber bundle, and thus it is easy to peel off from the composite material. It will not cause fiber residue on the surface of the part, and the produced part has good flatness.

[0033] (3) The high-temperature resistant peelable fabric provided by the present invention also has a certain degree of plasticity. Before use, it can be pre-heat-set according to the shape of the mold, which avoids wrinkles on the curved surface of ordinary peelable fabric, resulting in surface defects of the parts. It is suitable for the processing and preparation of irregular parts. Detailed Implementation

[0034] The technical solution of the present invention will be further illustrated below through specific embodiments. Those skilled in the art should understand that the embodiments described are merely illustrative of the present invention and should not be construed as limiting the invention in any way.

[0035] Example 1

[0036] A high-temperature resistant peelable fabric with a thickness of 0.06 mm and a surface density of 100 g / m³. 2 It is woven from warp and weft yarns, and the weave pattern is plain weave, with a warp density of 275 threads / 10cm and a weft density of 275 threads / 10cm.

[0037] Both the warp and weft yarns are core-sheath yarns. In the core-sheath yarns, the sheath layer accounts for 70% of the mass percentage and is made of PFA resin with a melt index of 29.87 g / 10 min (372℃ / 5 kg). The core layer accounts for 30% of the mass percentage and is made of D900 glass fiber filament.

[0038] The method for preparing the high-temperature resistant peelable fabric provided in this embodiment includes the following steps:

[0039] (1) D900 glass fiber filaments are impregnated in molten PFA resin, and then cooled and shaped at room temperature through a mold to obtain a uniform core-sheath yarn.

[0040] (2) The core yarn obtained in step (1) is used as both warp and weft yarn. It is warped using a warping machine and woven using a rapier loom. The weaving structure is plain weave. Finally, it is heat-set by a hot roller at a temperature of 350°C to obtain the high-temperature resistant peelable fabric.

[0041] Example 2

[0042] A high-temperature resistant peelable fabric with a thickness of 0.08 mm and a surface density of 250 g / m³. 2 It is woven from warp and weft yarns, and the weaving structure is plain weave, with a warp density of 480 threads / 10cm and a weft density of 400 threads / 10cm.

[0043] Both the warp and weft yarns are core-sheath yarns. In the core-sheath yarns, the sheath layer accounts for 70% of the mass percentage and is made of PFA resin with a melt index of 29.87 g / 10 min (372℃ / 5 kg). The core layer accounts for 30% of the mass percentage and is made of D900 glass fiber filament.

[0044] The method for preparing the high-temperature resistant peelable fabric provided in this embodiment is the same as in Embodiment 1.

[0045] Example 3

[0046] A high-temperature resistant peelable fabric with a thickness of 0.10 mm and a surface density of 290 g / m³. 2 It is woven from warp and weft yarns, and the weaving structure is plain weave, with a warp density of 320 threads / 10cm and a weft density of 400 threads / 10cm.

[0047] The warp yarn is a core-sheath yarn A, in which the sheath layer accounts for 70% of the mass percentage and is made of PFA resin with a melt index of 29.87 g / 10 min (372℃ / 5 kg), and the core layer accounts for 30% of the mass percentage and is made of D450 glass fiber filament.

[0048] The weft yarn is a core-sheath yarn B. In the core-sheath yarn B, the sheath layer accounts for 70% of the mass percentage and is made of PFA resin with a melt index of 29.87 g / 10 min (372℃ / 5 kg). The core layer accounts for 30% of the mass percentage and is made of D900 glass fiber filament.

[0049] The method for preparing the high-temperature resistant peelable fabric provided in this embodiment includes the following steps:

[0050] (1) D450 glass fiber filaments are impregnated in molten PFA resin, and then cooled and shaped at room temperature through a mold to obtain a uniform core-sheath yarn A.

[0051] D900 glass fiber filaments are impregnated in molten PFA resin, then passed through a mold and cooled and shaped at room temperature to obtain uniform core-sheath yarn B.

[0052] (2) Using the core-sheath yarn A obtained in step (1) as the warp yarn and the core-sheath yarn B as the weft yarn, the yarn is warped using a warping machine and woven using a rapier loom. The weave pattern is plain weave. Finally, it is heat-set using a hot roller at a temperature of 350℃ to obtain the high-temperature resistant peelable fabric.

[0053] Example 4

[0054] A high-temperature resistant peelable fabric with a thickness of 0.12 mm and a surface density of 340 g / m³. 2 It is woven from warp and weft yarns, and the weave pattern is plain weave, with a warp density of 320 threads / 10cm and a weft density of 320 threads / 10cm.

[0055] Both the warp and weft yarns are core-sheath yarns. In the core-sheath yarns, the sheath layer accounts for 70% of the mass percentage and is made of PFA resin with a melt index of 29.87 g / 10 min (372℃ / 5 kg). The core layer accounts for 30% of the mass percentage and is made of D450 glass fiber filament.

[0056] The method for preparing the high-temperature resistant peelable fabric provided in this embodiment is the same as in Embodiment 1.

[0057] Example 5

[0058] A high-temperature resistant peelable fabric with a thickness of 0.12 mm and a surface density of 340 g / m³. 2It is woven from warp and weft yarns, and the weave structure is twill weave with a warp density of 320 threads / 10cm and a weft density of 320 threads / 10cm.

[0059] Both the warp and weft yarns are core-sheath yarns. In the core-sheath yarns, the sheath layer accounts for 70% of the mass percentage and is made of PFA resin with a melt index of 29.87 g / 10 min (372℃ / 5 kg). The core layer accounts for 30% of the mass percentage and is made of D450 glass fiber filament.

[0060] The method for preparing the high-temperature resistant peelable fabric provided in this embodiment is the same as in Embodiment 1.

[0061] Example 6

[0062] A high-temperature resistant peelable fabric with a thickness of 0.12 mm and a surface density of 340 g / m³. 2 It is woven from warp and weft yarns, and the weave pattern is plain weave, with a warp density of 320 threads / 10cm and a weft density of 320 threads / 10cm.

[0063] Both the warp and weft yarns are core-sheath yarns. In the core-sheath yarns, the sheath layer accounts for 70% of the mass percentage and is made of PFA resin with a melt index of 8.54 g / 10 min (372℃ / 5 kg). The core layer accounts for 30% of the mass percentage and is made of D450 glass fiber filament.

[0064] The method for preparing the high-temperature resistant peelable fabric provided in this embodiment is the same as in Embodiment 1.

[0065] Example 7

[0066] A high-temperature resistant peelable fabric with a thickness of 0.16 mm and a surface density of 360 g / m³. 2 It is woven from warp and weft yarns, and the weaving structure is plain weave, with a warp density of 240 threads / 10cm and a weft density of 320 threads / 10cm.

[0067] The warp yarn is a core-sheath yarn A, in which the sheath layer accounts for 70% of the mass percentage and is made of PFA resin with a melt index of 29.87 g / 10 min (372℃ / 5 kg), and the core layer accounts for 30% of the mass percentage and is made of E225 glass fiber filament.

[0068] The weft yarn is a core-sheath yarn B. In the core-sheath yarn B, the sheath layer accounts for 70% of the mass percentage and is made of PFA resin with a melt index of 29.87 g / 10 min (372℃ / 5 kg). The core layer accounts for 30% of the mass percentage and is made of D450 glass fiber filament.

[0069] The method for preparing the high-temperature resistant peelable fabric provided in this embodiment is the same as in Embodiment 3.

[0070] Example 8

[0071] A high-temperature resistant peelable fabric with a thickness of 0.20 mm and a surface density of 360 g / m³. 2 It is woven from warp and weft yarns, and the weaving pattern is plain weave, with a warp density of 240 threads / 10cm and a weft density of 220 threads / 10cm.

[0072] Both the warp and weft yarns are core-sheath yarns. In the core-sheath yarns, the sheath layer accounts for 70% of the mass percentage and is made of PFA resin with a melt index of 29.87 g / 10 min (372℃ / 5 kg). The core layer accounts for 30% of the mass percentage and is made of E225 glass fiber filament.

[0073] The method for preparing the high-temperature resistant peelable fabric provided in this embodiment is the same as in Embodiment 1.

[0074] Example 9

[0075] A high-temperature resistant peelable fabric with a thickness of 0.18 mm and a surface density of 220 g / m³. 2 It is woven from warp and weft yarns, and the weaving pattern is plain weave, with a warp density of 240 threads / 10cm and a weft density of 220 threads / 10cm.

[0076] Both the warp and weft yarns are core-sheath yarns. In the core-sheath yarns, the sheath layer accounts for 50% of the mass and is made of PFA resin with a melt index of 29.87 g / 10 min (372℃ / 5 kg). The core layer accounts for 50% of the mass and is made of E225 glass fiber filament.

[0077] The method for preparing the high-temperature resistant peelable fabric provided in this embodiment is the same as in Embodiment 1.

[0078] Example 10

[0079] A high-temperature resistant peelable fabric differs from Example 1 in that, in the core-sheath yarn, the sheath layer accounts for 30% of the mass and the core layer accounts for 70% of the mass, while the other structures, materials, parameters and preparation methods are the same as in Example 1.

[0080] Example 11

[0081] A high-temperature resistant peelable fabric differs from Example 1 in that, in the core-sheath yarn, the sheath layer accounts for 80% of the mass and the core layer accounts for 20% of the mass, while the other structures, materials, parameters, and preparation methods are the same as in Example 1.

[0082] Comparative Example 1

[0083] A peelable fabric with a thickness of 0.06 mm and a surface density of 100 g / m³. 2 It is woven from warp and weft yarns, and the weave structure is plain weave with a radial density of 275 threads / 10cm and a weft density of 275 threads / 10cm.

[0084] Both the warp and weft yarns are D900 glass fiber filaments;

[0085] The method for preparing the high-temperature resistant peelable fabric provided in this comparative example includes: warping D900 glass fiber filaments using a warping machine, and then weaving them using a rapier loom with a plain weave structure to obtain the peelable fabric.

[0086] Comparative Example 2

[0087] A high-temperature resistant peelable fabric with a thickness of 0.06 mm and a surface density of 100 g / m³. 2 It is woven from warp and weft yarns, and the weave structure is plain weave with a radial density of 275 threads / 10cm and a weft density of 275 threads / 10cm.

[0088] The warp yarn is a core-sheath yarn, in which the sheath layer accounts for 70% of the mass percentage and is made of PFA resin with a melt index of 29.87 g / 10 min (372℃ / 5 kg), and the core layer accounts for 30% of the mass percentage and is made of D900 glass fiber filament.

[0089] The weft yarn is D900 glass fiber filament;

[0090] The method for preparing the high-temperature resistant peelable fabric provided in this comparative example includes the following steps:

[0091] (1) D900 glass fiber filaments are impregnated in molten PFA resin, and then cooled and shaped at room temperature through a mold to obtain a uniform core-sheath yarn.

[0092] (2) The core yarn obtained in step (1) is used as the warp yarn, D900 glass fiber filament is used as the weft yarn, the warping is performed by a warping machine, the weaving is performed by a rapier loom, the weaving structure is plain weave, and finally the fabric is heat-set by a hot roller at a temperature of 350°C to obtain the peelable fabric.

[0093] Comparative Example 3

[0094] A high-temperature resistant peelable fabric with a thickness of 0.06 mm and a surface density of 100 g / m³. 2 It is woven from warp and weft yarns, and the weave structure is plain weave with a radial density of 275 threads / 10cm and a weft density of 275 threads / 10cm.

[0095] The weft yarn is a core-sheath yarn. In the core-sheath yarn, the sheath layer accounts for 70% of the mass percentage and is made of PFA resin with a melt index of 29.87 g / 10 min (372℃ / 5 kg). The core layer accounts for 30% of the mass percentage and is made of D900 glass fiber filament.

[0096] The warp yarn is D900 glass fiber filament;

[0097] The method for preparing the high-temperature resistant peelable fabric provided in this comparative example includes the following steps:

[0098] (1) D900 glass fiber filaments are impregnated in molten PFA resin, and then cooled and shaped at room temperature ℃ to obtain uniform core yarn.

[0099] (2) The core yarn obtained in step (1) is used as the weft yarn, D900 glass fiber yarn is used as the warp yarn, the warping is performed by a warping machine, the weaving is performed by a rapier loom, the weaving structure is plain weave, and finally the fabric is heat-set by a hot roller at a temperature of 350°C to obtain the peelable fabric.

[0100] Performance testing:

[0101] (1) High temperature resistance: After placing the obtained peelable fabric in an oven at 280℃ for 6 hours, observe whether the peelable fabric melts or cracks.

[0102] (2) Fracture strength: Tested according to the method in standard 3923.1-2013;

[0103] (3) Peeling performance: A release film was laid on the surface of the steel plate, and the peelable fabric was laid on the release film. Four layers of prepreg were laid on the peelable fabric, and then the release film and breathable felt were laid on top in sequence. The plate was then vacuum-sealed and placed in a thermostatic jar. It was treated at 280℃ and 0.6MPa for 6 hours. After the plate was removed from the jar, the peeling performance between the peelable fabric and the prepreg test plate was observed.

[0104] The peelable fabrics provided in Examples 1-11 and Comparative Examples 1-3 were tested according to the above test methods, and the test results are shown in Table 1:

[0105] Table 1

[0106]

[0107]

[0108] According to the data in Table 1:

[0109] The high-temperature resistant peelable fabrics provided in Examples 1 to 9 have excellent high-temperature resistance, mechanical properties, and peelability. Furthermore, as the glass fiber diameter and the thickness of the high-temperature resistant peelable fabric increase, the mechanical properties of the peelable fabric are significantly improved. As a result, different types of products can be selected according to different working conditions, making it widely applicable.

[0110] Compared with Example 1, the content of the sheath layer in the core-sheath fiber used in Example 10 is too low, which means that the glass fiber filaments in the core layer cannot be completely wrapped, resulting in a decrease in the mechanical properties of the peelable fabric. The content of the sheath layer in the core-sheath fiber used in Example 11 is high. Although the peeling performance and temperature resistance of the peelable fabric are not affected, it will result in a high cost of the peelable fabric and waste of materials.

[0111] Compared to Example 1, the yarn used in Comparative Example 1 lacked the PFA resin sheath, causing the glass fiber filaments to fuse with the prepreg, making it impossible to separate the peelable fabric from the workpiece and rendering it unusable. Comparative Examples 2 and 3 used PFA resin only for the warp or weft yarns, and similarly, due to the problem of the prepreg bonding with the glass fiber, the peelable fabric could not be completely separated from the workpiece.

[0112] The applicant declares that this invention illustrates a high-temperature resistant peelable fabric, its preparation method, and its application through the above embodiments. However, this invention is not limited to the above embodiments, meaning that this invention does not necessarily rely on the above embodiments for implementation. Those skilled in the art should understand that any improvements to this invention, equivalent substitutions of raw materials, additions of auxiliary components, and selection of specific methods, etc., all fall within the protection and disclosure scope of this invention.

Claims

1. A high-temperature resistant peelable fabric, characterized in that, The high-temperature resistant peelable fabric is woven from warp and weft yarns; Both the warp and weft yarns are core-sheath yarns, and the sheath of the core-sheath yarn is PFA resin, while the core is glass fiber filament. The glass fiber content in the core-sheath yarn is 30-50% by mass, and the PFA resin content in the core-sheath yarn is 50-70% by mass. The high-temperature resistant peelable fabric refers to a peelable fabric that can withstand temperatures of not less than 280°C and does not melt or crack after being treated at 280°C for 6 hours.

2. The high-temperature resistant peelable fabric according to claim 1, characterized in that, The areal density of the high-temperature resistant peelable fabric is 70~400 g / m². 2 .

3. The high-temperature resistant peelable fabric according to claim 1, characterized in that, The thickness of the high-temperature resistant peelable fabric is 0.06~0.2 mm.

4. The high-temperature resistant peelable fabric according to claim 1, characterized in that, The warp density of the high-temperature resistant peelable fabric is 170~480 threads / 10cm.

5. The high-temperature resistant peelable fabric according to claim 1, characterized in that, The weft density of the high-temperature resistant peelable fabric is 150~400 threads / 10cm.

6. The high-temperature resistant peelable fabric according to claim 1, characterized in that, The glass fiber filaments include any one or a combination of at least two of D900 glass fiber filaments, D450 glass fiber filaments, or E225 glass fiber filaments.

7. The high-temperature resistant peelable fabric according to claim 1, characterized in that, The melt flow index of the PFA resin is 8~30 g / 10 min.

8. The high-temperature resistant peelable fabric according to claim 1, characterized in that, The weaving pattern is either plain weave or twill weave.

9. A method for preparing a high-temperature resistant peelable fabric as described in any one of claims 1 to 8, characterized in that, The preparation method includes the following steps: (1) The glass fiber filaments are impregnated in molten PFA resin, taken out and cooled to set, and then the core yarn is obtained; (2) The obtained core yarn is used as warp and weft yarn to weave the high-temperature resistant peelable fabric.

10. The preparation method according to claim 9, characterized in that, Step (2) before weaving also includes a step of warping using a warping machine.

11. The preparation method according to claim 9, characterized in that, The weaving described in step (2) is carried out on a rapier loom.

12. The preparation method according to claim 9, characterized in that, Step (2) after weaving is completed also includes a heat setting step.

13. The application of a high-temperature resistant peelable fabric as described in any one of claims 1 to 8 in the processing and molding of composite materials.

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