A quartz fiber composite material and a method for producing the same

Abstract

The application relates to the field of wave-transparent materials, in particular to a quartz fiber composite material and a preparation method thereof, which comprises the following components in parts by weight: 50 parts of quartz fiber preform, 20-30 parts of plasma polytetrafluoroethylene, 10-15 parts of aluminum silicate fiber and 40-60 parts of cyanate ester resin. The preparation method of the quartz fiber preform comprises the following steps: dipping quartz fiber in aluminum hydroxide sol to obtain dipped quartz fiber, and then gradiently increasing the temperature to 100-400 DEG C to obtain the quartz fiber preform. The quartz fiber is prepared into a preform, the quartz fiber preform has a porous aluminum oxide coating, the plasma polytetrafluoroethylene is treated by plasma, the plasma polytetrafluoroethylene has micron-level pits and oxygen-containing groups, the quartz fiber preform and the plasma polytetrafluoroethylene are well combined, and therefore the wave-transparent performance of the material is improved. In addition, the aluminum silicate fiber can ensure stable connection with the quartz fiber preform and improve the heat resistance of the material.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wave-transparent materials, in particular to a quartz fiber composite material and a preparation method thereof. BACKGROUND

[0002] In recent years, with the development of modern electronic technology and the emergence of new demands such as radar technology, electronic warfare, and space communication, the application of wave-transparent materials is becoming more and more widespread. In particular, with the development of radar communication technology, the performance requirements for radar radomes have gradually increased.

[0003] Antenna radome wave-transparent materials mainly include inorganic non-metallic materials and organic composite materials. Organic wave-transparent composite materials, i.e., polymer-based wave-transparent composite materials, are composed of reinforcing fibers and resin matrices. The reinforcing fibers mainly determine the mechanical properties of the composite material, while the resin matrix mainly determines the electrical properties of the composite material.

[0004] Among them, quartz fiber is widely used in antenna radome wave-transparent materials due to its advantages such as high temperature resistance and stable dielectric properties. Polytetrafluoroethylene has a dielectric constant of 2.1, which is lower than that of quartz fiber, showing good application potential. However, due to the low surface energy and poor wettability of polytetrafluoroethylene, as well as its high crystallinity and strong chemical stability, it is difficult to form effective adhesion. Therefore, the bonding force between quartz fiber and polytetrafluoroethylene is poor, which limits the application of the composite material formed by the two. SUMMARY

[0005] In order to solve the problem of poor bonding force between quartz fiber and polytetrafluoroethylene, the present application provides a quartz fiber composite material and a preparation method thereof.

[0006] In a first aspect, the present application provides a quartz fiber composite material, which adopts the following technical solution:

[0007] A quartz fiber composite material, comprising the following components by weight: quartz fiber preform 50 parts, plasma polytetrafluoroethylene 20-30 parts, aluminum silicate fiber 10-15 parts, and cyanate ester resin 40-60 parts.

[0008] The preparation method of the quartz fiber preform comprises the following steps:

[0009] The quartz fiber is immersed in an aluminum hydroxide sol to obtain immersed quartz fiber, and then the temperature is gradually increased at 100-400℃ to obtain a quartz fiber preform.

[0010] By adopting the technical scheme, the dielectric constant of the quartz fiber is 3.8, the dielectric constant of the polytetrafluoroethylene is 2.1, and the loss tangent of both is extremely small. When the quartz fiber and the polytetrafluoroethylene are compounded, the dielectric constants of both are matched, the interface reflection loss is reduced, and the wave permeability of the material is improved.

[0011] The quartz fiber preform adopted in the application is first immersed in the aluminum hydroxide sol, so that the aluminum hydroxide is covered on the surface of the quartz fiber, and then the aluminum hydroxide is gradually decomposed into aluminum oxide and water through gradient heating. The aluminum oxide remains on the surface of the quartz fiber as a coating, and the water becomes water vapor to break through the coating, so that the coating has many micron-sized pores.

[0012] The polytetrafluoroethylene is subjected to plasma bombardment on the surface, breaks the C-F bond and oxidizes, introduces oxygen-containing polar groups, and produces micron-sized pits. The micron-sized pores of the surface coating of the quartz fiber form a “mortise and tenon” anchoring with the micron-sized pits of the plasma-treated polytetrafluoroethylene, improving the physical bonding force of both. The porous coating exposes more Al-OH groups, which form hydrogen bonds or Van der Waals force connections with the oxygen-containing groups generated after the plasma treatment of the polytetrafluoroethylene. In this way, the quartz fiber preform and the plasma-treated polytetrafluoroethylene can be well combined.

[0013] The porous aluminum oxide coating forms a concave-convex structure on the surface of the quartz fiber, significantly increasing the roughness and providing anchoring points for physical engagement. The three-dimensional network structure of the aluminum silicate fiber can be wound around the quartz fiber with roughened surface to form a “rigid-soft collaborative” interlocking network. In addition, the three-dimensional network structure of the aluminum silicate fiber is made as a high-temperature skeleton to suppress overall thermal deformation, and its low thermal conductivity effectively delays heat transfer, thereby improving the heat resistance of the material.

[0014] The application improves the wave permeability of the material by making the quartz fiber into a preform with a porous aluminum oxide coating thereon, and plasma-treating the polytetrafluoroethylene to have micron-sized pits and oxygen-containing groups thereon, so that the quartz fiber preform and the plasma-treated polytetrafluoroethylene can be well combined. In addition, the aluminum silicate fiber can not only ensure stable connection with the quartz fiber preform, but also improve the heat resistance of the material.

[0015] Preferably, the mass ratio of the quartz fiber to the aluminum hydroxide sol is 1:0.1-0.15.

[0016] By adopting the above technical solution, when the aluminum hydroxide sol content is too low, the alumina coating formed by the quartz fiber has insufficient coverage area, resulting in a decrease in the bonding performance with the plasma-converted polytetrafluoroethylene, thus causing insufficient wave transmission performance of the composite material; when the aluminum hydroxide sol content is too high, the alumina coating formed by the quartz fiber is too thick, and since alumina has a high dielectric constant, it actually reduces the wave transmission performance of the composite material. Therefore, after extensive research and experimental verification, the applicant finally determined that the mass ratio of quartz fiber to aluminum hydroxide sol in this application is preferably as described above.

[0017] Preferably, the gradient temperature increase at 100-400℃ includes the following steps:

[0018] Drying: The impregnated quartz fibers are dried at 100-120℃ for 1 hour to obtain dried quartz fibers;

[0019] Pre-decomposition: Dry quartz fibers are pre-decomposed at 180-200℃ for 0.5h to obtain pre-decomposed quartz fibers;

[0020] Decomposition: Decompose the pre-decomposed quartz fiber at 250-300℃ for 2 hours to obtain decomposed quartz fiber;

[0021] Prefabrication: Decomposed quartz fibers are heated at 350-400℃ for 1 hour to obtain quartz fiber prefabricated parts.

[0022] Preferably, the gradient temperature increase at 100-400℃ includes the following steps:

[0023] Drying: The impregnated quartz fibers are dried at 100°C for 1 hour to obtain dried quartz fibers;

[0024] Pre-decomposition: Dry quartz fibers are pre-decomposed at 200℃ for 0.5h to obtain pre-decomposed quartz fibers;

[0025] Decomposition: The pre-decomposed quartz fiber was decomposed at 300℃ for 2 hours to obtain decomposed quartz fiber;

[0026] Prefabrication: Decomposed quartz fibers are heated at 400℃ for 1 hour to obtain quartz fiber prefabricated parts.

[0027] By adopting the above technical solution, the quartz fiber impregnated with aluminum hydroxide sol gradually decomposes to form a porous alumina coating through the gradient heating steps described above, which is beneficial for subsequent bonding with plasma-treated polytetrafluoroethylene to form a composite material.

[0028] Preferably, the method for preparing the plasma-enhanced polytetrafluoroethylene includes the following steps:

[0029] Polytetrafluoroethylene (PTFE) is subjected to plasma treatment with argon gas at a power of 200-500W for 3-5 minutes to obtain plasma-treated PTFE.

[0030] Preferably, the method for preparing the plasma-enhanced polytetrafluoroethylene includes the following steps:

[0031] Polytetrafluoroethylene (PTFE) was subjected to plasma treatment with argon gas at a power of 350W for 4 minutes to obtain plasma-treated PTFE.

[0032] By adopting the above technical solution, when the processing power is too low or the processing time is too short, the modification effect on polytetrafluoroethylene is insufficient, the bonding performance with the quartz fiber preform decreases, and the wave transmission performance of the composite material is insufficient. When the processing power is too high or the processing time is too long, the polytetrafluoroethylene is over-etched, which can easily damage the structure of the polytetrafluoroethylene and reduce the wave transmission performance of the composite material. Therefore, after extensive research and experimental verification, the applicant finally determined that the processing power and processing time of this application are as described above.

[0033] Secondly, this application provides a method for preparing a quartz fiber composite material, which adopts the following technical solution:

[0034] A method for preparing a quartz fiber composite material, comprising the following steps:

[0035] Quartz fiber preforms and plasma-enhanced polytetrafluoroethylene are placed in a vacuum and heated at 150-200℃ for 60-90 minutes. After cooling, they are impregnated with cyanate ester resin together with aluminosilicate fibers, and then hot-pressed and cured. After cooling, quartz fiber composite material is obtained.

[0036] Preferably, the preparation method of the quartz fiber composite material includes the following steps: placing the quartz fiber preform and plasma-enhanced polytetrafluoroethylene in a vacuum state, heating at 180°C for 75 minutes, cooling, and then impregnating them together with aluminum silicate fiber in cyanate ester resin, followed by hot pressing and curing, and finally obtaining the quartz fiber composite material after cooling.

[0037] By adopting the above technical solution, quartz fiber preforms and plasma-modified polytetrafluoroethylene are reacted under the above conditions. The plasma-modified polytetrafluoroethylene will uniformly coat the quartz fiber preforms in a semi-molten state, forming a continuous polytetrafluoroethylene film layer, improving the interface density, and thus obtaining a quartz fiber composite material with excellent wave transmission and heat resistance.

[0038] In summary, this application has the following beneficial effects:

[0039] This application improves the wave transmission performance of a material by fabricating quartz fiber into a preform with a porous alumina coating and then subjecting polytetrafluoroethylene (PTFE) to plasma treatment, which creates micron-sized pits and oxygen-containing groups. This allows for a good bond between the quartz fiber preform and the plasma-treated PTFE. Furthermore, the use of aluminosilicate fibers ensures a stable connection with the quartz fiber preform while simultaneously enhancing the material's heat resistance. Detailed Implementation

[0040] The raw materials in this application include the following:

[0041] Cyanate ester resin: Commercially available products from Wuhan Kabuda Chemical Co., Ltd. are used;

[0042] Quartz fiber: Commercially available products from Donghai County Aida Quartz Products Co., Ltd.

[0043] Aluminosilicate fiber: Commercially available product from Lingshou County Dianjin Mineral Products Processing Plant;

[0044] Polytetrafluoroethylene (PTFE): The product used is a commercially available product from Shanghai Aladdin Biochemical Technology Co., Ltd., with the brand name P434335.

[0045] The present application will be further described in detail below with reference to embodiments and comparative examples.

[0046] Example 1

[0047] A method for preparing a quartz fiber composite material includes the following steps:

[0048] 500g of quartz fiber preforms and 250g of plasma-enhanced polytetrafluoroethylene were placed in a vacuum (vacuum degree 10Pa) and heated at 180℃ for 75min. After cooling, they were impregnated with 500g of cyanate ester resin along with 130g of aluminosilicate fibers, and then hot-pressed and cured. After cooling, quartz fiber composite material was obtained. The hot-pressing curing process was as follows: the temperature was raised to 150℃ and the pressure was increased to 10MPa. The pressure was maintained and the temperature was raised to 180℃ and held for 2h. The temperature was then raised to 200℃ and held for 2h. The final curing temperature was 220℃ and held for 4h.

[0049] The method for preparing quartz fiber preforms includes the following steps:

[0050] 1000g of quartz fiber was impregnated in 130g of aluminum hydroxide sol, with a mass ratio of quartz fiber to aluminum hydroxide sol of 1:0.13, to obtain impregnated quartz fiber. Then, the temperature was gradually increased from 100 to 400℃ to obtain quartz fiber preforms.

[0051] Gradient heating from 100-400℃ includes the following steps:

[0052] Drying: The impregnated quartz fibers are dried at 100°C for 1 hour to obtain dried quartz fibers;

[0053] Pre-decomposition: Dry quartz fibers are pre-decomposed at 200℃ for 0.5h to obtain pre-decomposed quartz fibers;

[0054] Decomposition: The pre-decomposed quartz fiber was decomposed at 300℃ for 2 hours to obtain decomposed quartz fiber;

[0055] Prefabrication: Decomposed quartz fibers are heated at 400℃ for 1 hour to obtain quartz fiber prefabricated parts.

[0056] A method for preparing plasma-enhanced polytetrafluoroethylene includes the following steps:

[0057] Polytetrafluoroethylene (PTFE) was subjected to plasma treatment with argon gas at a power of 350W for 4 minutes to obtain plasma-treated PTFE.

[0058] Example 2-3

[0059] Examples 2-3 are based on the preparation method of Example 1, but the content of each component of the quartz fiber composite material is adjusted, as shown in Table 1.

[0060] Comparative Examples 1-5

[0061] Comparative Example 1 was prepared by replacing 500g of quartz fiber preforms with 500g of quartz fiber, based on the preparation method of Example 1.

[0062] Comparative Example 2, based on the preparation method of Example 1, describes a method for preparing quartz fiber preforms, including the following steps:

[0063] 1000g of quartz fiber was impregnated in 43.33g of aluminum hydroxide sol to obtain primary impregnated quartz fiber, and then the temperature was gradually increased from 100-400℃ to obtain primary quartz fiber preforms.

[0064] A primary quartz fiber preform was impregnated in 43.33g of aluminum hydroxide sol to obtain a secondary impregnated quartz fiber, and then the temperature was gradually increased from 100-400℃ to obtain a secondary quartz fiber preform.

[0065] The secondary quartz fiber preform was impregnated in 43.33g of aluminum hydroxide sol to obtain tertiary impregnated quartz fiber, and then the temperature was gradually increased from 100 to 400℃ to obtain the quartz fiber preform.

[0066] Comparative Example 3, based on the preparation method of Example 1, describes a method for preparing a quartz fiber preform, including the following steps:

[0067] 1000g of quartz fiber was impregnated in 130g of nano-alumina dispersion to obtain impregnated quartz fiber, which was dried at 100℃ for 1h to obtain dried quartz fiber; then it was sintered at 700℃ for 3h to obtain quartz fiber preform.

[0068] Comparative Example 4 was prepared using the same method as in Example 1, but without the addition of 250g of plasma-converted polytetrafluoroethylene.

[0069] Comparative Example 5 was prepared using the same method as in Example 1, but without the addition of 130g of aluminum silicate fiber.

[0070] Table 1. Content and performance test results of each component in quartz fiber composite materials of Examples 1-3 and Comparative Examples 1-5.

[0071]

[0072] Performance testing

[0073] The quartz fiber composite materials of Examples 1-3 and Comparative Examples 1-5 were subjected to the following performance tests, and the test results are shown in Table 1.

[0074] 1. Transmittance

[0075] The transmittance was measured according to GJB 7954-2012 "Test Method for Radar Transmitting Materials".

[0076] 2. Bending strength retention rate

[0077] The flexural strength A of the composite material was determined according to ISO 14125-2011 "Determination of flexural properties of reinforced plastic composite materials". Then, the composite material was heated at 500°C for 30 min and the flexural strength B was measured immediately. The flexural strength retention rate was calculated as (B / A)*100%.

[0078] Referring to Table 1, comparing Examples 1-3 and Comparative Examples 1-5, it can be seen that Example 1 exhibits better wave transmission and heat resistance compared to Comparative Examples 1-3. This is because the quartz fiber with a porous alumina coating bonds better with plasma-contaminated polytetrafluoroethylene (PTFE). Quartz fibers without an alumina coating, or those with a dense alumina coating, have fewer micron-sized pores on their surface. Furthermore, the alumina coating generated from the repeated decomposition of aluminum hydroxide also reduces micron-sized pores due to the mutual coverage between coatings. Therefore, the bonding between the quartz fiber and plasma-contaminated PTFE in Comparative Examples 1-3 is poor, thus reducing the wave transmission and heat resistance of the quartz fiber composite material.

[0079] Compared to Comparative Example 4, Example 1 shows that without the addition of plasma-enhanced polytetrafluoroethylene (PTFE), the wave transmittance of the quartz fiber composite material decreases while its heat resistance increases. This is because PTFE has a dielectric constant of 2.1, and both PTFE and plasma-enhanced polytetrafluoroethylene (PTFE) have extremely small loss tangents. When quartz fiber and PTFE are combined, their dielectric constants match, reducing interfacial reflection loss and improving the material's wave transmittance. Furthermore, PTFE itself has poor heat resistance; removing it increases the heat resistance of the composite material.

[0080] Compared to Comparative Example 5, Example 1 shows that the absence of aluminosilicate fibers in the quartz fiber composite material results in decreased wave transmittance and reduced heat resistance. This is because the three-dimensional network structure of aluminosilicate fibers can entangle the surface-roughened quartz fibers, forming a "rigid-flexible synergistic" interlocking network. The absence of aluminosilicate fibers reduces the internal bonding strength of the composite material. Furthermore, the three-dimensional network structure of aluminosilicate fibers acts as a high-temperature skeleton, suppressing overall thermal deformation, and its low thermal conductivity effectively delays heat transfer, thereby improving the material's heat resistance.

[0081] Furthermore, comparing Examples 1-3, it was found that Example 1 had the best performance; therefore, Example 1 was preferred.

[0082] Examples 4-7

[0083] Examples 4-7 are based on the preparation method of Example 1, but the mass ratio of quartz fiber and aluminum hydroxide sol in the preparation method of quartz fiber preforms is adjusted. The specific adjustments are shown in Table 2.

[0084] The quartz fiber composite materials of Examples 4-7 were subjected to the above performance tests, and the test results are shown in Table 2.

[0085] Table 2. Mass ratio and performance test results of quartz fiber and aluminum hydroxide sol in Examples 1 and 4-7.

[0086]

[0087] Referring to Table 2, a comparison of Examples 1 and 4-7 shows that as the proportion of aluminum hydroxide sol increases, the wave transmittance of the quartz fiber composite material first increases and then decreases. This may be because as the proportion of aluminum hydroxide sol increases, the alumina coating formed by the aluminum hydroxide sol gradually covers the quartz fibers, and the bonding performance with the plasma-converted polytetrafluoroethylene gradually increases, thus gradually improving the wave transmittance of the composite material. However, when a certain range is exceeded, the alumina coating formed by the quartz fibers becomes too thick, and since alumina has a high dielectric constant, it actually reduces the wave transmittance of the composite material.

[0088] Examples 8-11

[0089] Example 8, based on the preparation method of Example 1, adjusts the gradient heating from 100-400℃ in the preparation method of quartz fiber preforms to the following steps:

[0090] Drying: The impregnated quartz fibers were dried at 110°C for 1 hour to obtain dried quartz fibers;

[0091] Pre-decomposition: Dry quartz fibers are pre-decomposed at 180℃ for 0.5h to obtain pre-decomposed quartz fibers;

[0092] Decomposition: The pre-decomposed quartz fiber was decomposed at 250℃ for 2 hours to obtain decomposed quartz fiber;

[0093] Prefabrication: Quartz fiber prefabrication is obtained by decomposing quartz fibers at 350℃ for 1 hour.

[0094] Example 9, based on the preparation method of Example 1, adjusts the gradient heating from 100-400℃ in the preparation method of quartz fiber preforms to the following steps:

[0095] Drying: The impregnated quartz fibers were dried at 120°C for 1 hour to obtain dried quartz fibers;

[0096] Pre-decomposition: Dry quartz fibers are pre-decomposed at 190℃ for 0.5h to obtain pre-decomposed quartz fibers;

[0097] Decomposition: The pre-decomposed quartz fiber was decomposed at 280℃ for 2 hours to obtain decomposed quartz fiber;

[0098] Prefabrication: Decomposed quartz fibers are heated at 380°C for 1 hour to obtain quartz fiber prefabricated parts.

[0099] In Example 10, the preparation method of Example 1 was adjusted from heating at 180°C for 75 min to heating at 150°C for 90 min.

[0100] In Example 11, the preparation method of Example 1 was adjusted from heating at 180°C for 75 min to heating at 200°C for 60 min.

[0101] The quartz fiber composite materials of Examples 8-11 were subjected to the above performance tests, and the test results are shown in Table 3.

[0102] Table 3 Performance test results for Examples 1 and 8-11

[0103]

[0104] Referring to Table 3, a comparison of Example 1 and Examples 8-11 shows that, based on the above comparison, Example 1 performs better.

[0105] Examples 12-15

[0106] Examples 12-15 are based on the preparation method of Example 1, with adjustments made to the processing power and processing time in the preparation method of plasma-enhanced polytetrafluoroethylene. The specific adjustments are shown in Table 4.

[0107] The quartz fiber composite materials of Examples 12-15 were subjected to the above performance tests, and the test results are shown in Table 4.

[0108] Table 4 Performance test results for Examples 1 and 12-15

[0109]

[0110] Referring to Table 4, a comparison of Examples 1 and 12-15 shows that when the processing power is too low or the processing time is too short, the modification effect on polytetrafluoroethylene is insufficient, the bonding performance with the quartz fiber preform decreases, and the wave transmission performance of the composite material is insufficient. When the processing power is too high or the processing time is too long, the polytetrafluoroethylene is over-etched, which can easily damage the structure of the polytetrafluoroethylene and reduce the wave transmission performance of the composite material.

[0111] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A quartz fiber composite material, characterized by, Components including the following weight parts: quartz fiber preform 50 parts, plasma polytetrafluoroethylene 20-30 parts, aluminum silicate fiber 10-15 parts, cyanate ester resin 40-60 parts; The preparation method of the quartz fiber preform includes the following steps: The quartz fiber is immersed in aluminum hydroxide sol to obtain immersed quartz fiber, and then gradient heating is carried out at 100-400 DEG C to obtain the quartz fiber preform; The 100-400 DEG C gradient heating includes the following steps: Drying: the immersed quartz fiber is dried at 100-120 DEG C for 1h to obtain dried quartz fiber; Pre-decomposition: the dried quartz fiber is pre-decomposed at 180-200 DEG C for 0.5h to obtain pre-decomposed quartz fiber; Decomposition: the pre-decomposed quartz fiber is decomposed at 250-300 DEG C for 2h to obtain decomposed quartz fiber; Preparation: the decomposed quartz fiber is prepared at 350-400 DEG C for 1h to obtain the quartz fiber preform.

2. The quartz fiber composite material according to claim 1, characterized by: The mass ratio of the quartz fiber and the aluminum hydroxide sol is 1:0.1-0.

15.

3. The quartz fiber composite material of claim 1, wherein: The 100-400 DEG C gradient heating includes the following steps: Drying: the immersed quartz fiber is dried at 100 DEG C for 1h to obtain dried quartz fiber; Pre-decomposition: the dried quartz fiber is pre-decomposed at 200 DEG C for 0.5h to obtain pre-decomposed quartz fiber; Decomposition: the pre-decomposed quartz fiber is decomposed at 300 DEG C for 2h to obtain decomposed quartz fiber; Preparation: the decomposed quartz fiber is prepared at 400 DEG C for 1h to obtain the quartz fiber preform.

4. The quartz fiber composite material of claim 1, wherein: The preparation method of the plasma polytetrafluoroethylene includes the following steps: The polytetrafluoroethylene is treated by argon plasma, the treatment power is 200-500W, the treatment time is 3-5min, and the plasma polytetrafluoroethylene is obtained.

5. The quartz fiber composite material according to claim 4, characterized in that: The preparation method of the plasma polytetrafluoroethylene includes the following steps: The polytetrafluoroethylene is treated by argon plasma, the treatment power is 350W, the treatment time is 4min, and the plasma polytetrafluoroethylene is obtained.

6. The method of producing a quartz fiber composite material as claimed in any one of claims 1 to 5, characterized in that, The following steps are included: The quartz fiber preform and the plasma polytetrafluoroethylene are placed in a vacuum state, heated at 150-200 DEG C for 60-90min, cooled, and then placed together with the aluminum silicate fiber in the cyanate ester resin for impregnation, and then hot-pressed and cured, and cooled to obtain the quartz fiber composite material.

7. The method for producing a quartz fiber composite material according to claim 6, characterized by, The following steps are included: The quartz fiber preform and the plasma polytetrafluoroethylene are placed in a vacuum state, heated at 180 DEG C for 75min, cooled, and then placed together with the aluminum silicate fiber in the cyanate ester resin for impregnation, and then hot-pressed and cured, and cooled to obtain the quartz fiber composite material.

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