阅读说明：本技术 一种天线罩材料的制备方法 (Preparation method of antenna housing material ) 是由 刘彦崇 于 2020-12-30 设计创作，主要内容包括：本发明公开了一种天线罩材料的制备方法,其特征在于,采用三维立体织造工艺,以纤维作为经纱、纬纱,与间隔纱织造成三维间隔织物；然后采用手糊法将热固性树脂涂覆在三维间隔织物表面,热固性树脂渗入织物内部；加热使热固性树脂固化,然后压缩三维间隔织物,使间隔纱压缩成屈曲结构并相互触碰。将三维间隔织物进行压缩,目的是使相邻的间隔纱线之间相互接触形成粘结点,在吸收树脂并且固化后可以形成交联的网络结构,提高复合材料的耐压缩能力,从而具有优异的力学性能和透波性能。本发明方法新颖,成本低,过程简单,适合于产业化生产,在民用、军用、航空航天和建筑等领域具有广泛的应用前景。(The invention discloses a preparation method of an antenna housing material, which is characterized in that a three-dimensional weaving process is adopted, and fibers are used as warp yarns and weft yarns to be woven with spacing yarns to form a three-dimensional spacing fabric; then coating thermosetting resin on the surface of the three-dimensional space fabric by adopting a hand pasting method, and enabling the thermosetting resin to permeate into the fabric; the heat cures the thermosetting resin and then compresses the three-dimensional spacer fabric, compressing the spacer yarns into a buckled structure and touching each other. The three-dimensional spacer fabric is compressed, so that adjacent spacer yarns are contacted with each other to form bonding points, a cross-linked network structure can be formed after resin is absorbed and cured, and the compression resistance of the composite material is improved, so that the composite material has excellent mechanical properties and wave-transmitting performance. The method is novel, low in cost and simple in process, is suitable for industrial production, and has wide application prospects in the fields of civil use, military use, aerospace, buildings and the like.)

1. The preparation method of the antenna housing material is characterized in that a three-dimensional weaving process is adopted, and fibers are used as warp yarns and weft yarns and are woven with spacing yarns to form a three-dimensional spacing fabric; then coating thermosetting resin on the surface of the three-dimensional space fabric by adopting a hand pasting method, and enabling the thermosetting resin to permeate into the fabric; the heat cures the thermosetting resin and then compresses the three-dimensional spacer fabric, compressing the spacer yarns into a buckled structure and touching each other.

2. The method for preparing the antenna housing material according to claim 1, wherein the warp yarns or/and the weft yarns are mixed by any one or more of glass fibers, polyarylate fibers and quartz fibers.

3. The method for preparing the radome material of claim 1 wherein the spacer yarn is a bulked yarn, an air textured yarn, a blended yarn with multiple hairiness or a common filament fiber yarn.

4. The method for preparing a radome material of claim 3 wherein the bulked yarn is a glass fiber, a polyarylate fiber or a quartz fiber.

5. The method for preparing the radome material of claim 1, wherein the weaving density of the spacer yarns in the three-dimensional spacer fabric is 3 to 20 yarns/cm, the height is 0.1 to 2 cm, and the weaving density of the warp yarns and the weft yarns is 3 to 20 yarns/cm.

6. The method for preparing the radome material of claim 1, wherein the three-dimensional spacer fabric is compressed to 0.1 to 0.9 times of the original thickness.

7. The method for preparing a radome material of claim 6 wherein the three-dimensional spacer fabric is compressed to an original thickness

8. The method for preparing the radome material of claim 1, wherein the thermosetting resin is at least one of epoxy resin, unsaturated vinyl resin, phenolic resin and polydimethylsiloxane resin.

Technical Field

The invention relates to a preparation method of an antenna housing material, and belongs to the technical field of preparation of three-dimensional fabric composite materials.

Background

With the development of society, people put higher demands on composite materials, such as light weight, high strength, delamination resistance, compression resistance and other comprehensive properties. The thermosetting composite material has high strength modulus, high corrosion resistance, high ageing resistance and other performance, and may be used widely in industrial field. However, the relatively high density of thermoset composites limits their use in transportation and aerospace applications. Some use honeycomb structure composite material plates or sandwich structure foam material composite material plates as light compression-resistant materials. However, the materials are formed by bonding multiple layers of materials, and thus the delamination is easy to damage.

The composite material prepared by taking the three-dimensional fabric as the reinforcement has the advantages of good integrity, strong delamination resistance, excellent wave-transmitting performance and the like. The three-dimensional spacer fabric consists of two surface layers and an intermediate spacer layer, which are connected together by continuous yarns. The upper and lower layers of the spacer fabric are interwoven by warp and weft yarns as in the conventional two-dimensional fabric, and the middle core layer is composed of column yarns connecting the upper and lower layers, and the column yarns are arranged in an 8-shaped, X-shaped or V-shaped manner along the warp direction of the fabric. Because the two surface layers are connected in the Z direction, the space fabric composite material overcomes the surface and core stripping phenomenon between the laminated materials, and has excellent integrity, durability and impact resistance. The material can be formed by one-step compounding, so that the processing cost is reduced, and the material has the characteristics of continuous holes, good integrity and light weight, and can be widely applied to the fields of energy, transportation, buildings, navigation and the like. The three-dimensional space fabric composite material has a hollow structure, so that the weight is light, and the specific compressive strength is high. The spacer yarns then deform and break causing the composite structure to fail as the composite is compressed. Even by the method of increasing the number of spacer yarns, the compressive strength cannot be increased significantly because of the limitation of the weaving process.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the preparation method of the novel radome composite material is simple to operate and obvious in effect.

In order to solve the technical problem, the invention provides a preparation method of an antenna housing material, which is characterized in that a three-dimensional weaving process is adopted, and fibers are used as warp yarns and weft yarns to be woven with spacing yarns to form a three-dimensional spacing fabric; then coating thermosetting resin on the surface of the three-dimensional space fabric by adopting a hand pasting method, and enabling the thermosetting resin to permeate into the fabric; the heat cures the thermosetting resin and then compresses the three-dimensional spacer fabric, compressing the spacer yarns into a buckled structure and touching each other. The three-dimensional spacing fabric is compressed, so that adjacent spacing yarns are contacted with each other to form bonding points, and a cross-linked network structure can be formed after resin is absorbed and cured, so that the compression resistance of the composite material is improved.

Preferably, the warp yarns or/and the weft yarns are made of any one or a mixture of glass fibers, polyarylate fibers and quartz fibers.

Preferably, the spacing yarn is bulked yarn, air textured yarn, multi-hairiness blended yarn or common filament fiber yarn.

More preferably, the bulked yarn is glass fiber, polyarylate fiber or quartz fiber. The bulked yarn structure has strong resin adsorption capacity, and after solidification, the spacing yarns are mutually bonded to form a compact cross-linked network, so that the novel composite material radome material is obtained.

Preferably, the weaving density of the spacing yarns in the three-dimensional spacing fabric is 3 to 20 yarns/cm, the height of the spacing yarns is 0.1 to 2 cm, and the weaving density of the warp yarns and the weft yarns is 3 to 20 yarns/cm.

Preferably, the three-dimensional spacing fabric is compressed to 0.1-0.9 times of the original thickness.

More preferably, the three-dimensional spacer fabric is compressed to its original thicknessOf degree

Preferably, the thermosetting resin is at least one of epoxy resin, unsaturated vinyl resin, phenolic resin and polydimethylsiloxane resin.

The antenna housing composite material provided by the invention has a three-dimensional integrated hollow network structure, and the spacing yarns are mutually bonded and supported to form an effective cross-linked network, so that the antenna housing composite material has excellent mechanical property and wave-transmitting property. The method is novel, low in cost, simple in process and suitable for industrial production; the obtained material has wide application prospect in the fields of civil use, military use, aerospace, building and the like.

Compared with the prior art, the invention has the beneficial effects that:

(1) the spacing yarns in the light compression-resistant composite material obtained by the invention are mutually bonded through resin to form a cross-linked network, so that the material has excellent light weight, high strength and wave-transmitting performance;

(2) the reinforced fabric of the light compression-resistant composite material is a three-dimensional object and has a hollow structure, a three-dimensional integrated structure and a layering resistance characteristic;

(3) the light antenna housing composite material obtained by the invention has wide application prospect in the fields of civil use, military use, aerospace, building and the like;

(4) the method provided by the invention is novel, low in cost, simple in process and suitable for industrial production.

Drawings

Fig. 1 is a schematic diagram of a radome material provided in example 1;

fig. 2 is a schematic diagram of a radome material provided in example 2.

Detailed Description

In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

The antenna housing material prepared by the invention is a three-dimensional space fabric woven by warp yarns 3, weft yarns 2 and space yarns 1, and adjacent space yarns 1 are contacted with each other and at least have one bonding point 4 as shown in figures 1 and 2.

Example 1

Glass fiber fabric reinforced unsaturated polyester resin radome composite material

Selecting glass fiber (boulder group) with the linear density of 800tex as warp yarns and weft yarns, selecting glass fiber bulked yarns with the linear density of 600tex as spacing yarns, adopting a multi-group heald frame weaving process, and controlling the motion modes of the warp yarns and the spacing yarns by controlling heald frames; meanwhile, a multi-rapier weft insertion process is adopted, the motion mode of weft yarns is controlled, and the three-dimensional space fabric is woven.

Step one, a weaving process:

the method comprises the following steps of firstly, leading weft yarns by double weft insertion devices, secondly, interweaving upper and lower warp yarn layers by moving a single group of heald frames, thirdly, interweaving interval yarns by moving a double group of heald frames, fourthly, beating up, fifthly, coiling by a stepping motor, and sixthly, repeating the steps to complete a complete cycle of weaving. And finally, the warp and weft density of the three-dimensional space fabric is as follows: 10 roots/cm; spacing yarn density: 10 roots/cm; the length of the fabric is 10 cm; width 10 cm and height 0.6 cm. The three-dimensional spacing fabric is schematically shown in FIG. 1, 1 weft yarn, 2 spacing yarns and 3 warp yarns.

Step two, composite material curing process

Unsaturated polyester resin (Guangzhou Hengyue chemical Co., Ltd., No. 901-VP) and matched curing agent are selected according to the volume ratio of 10: 1 relationship, preparing 800 ml of resin solution, coating the surface of the three-dimensional fabric by a hand pasting method, and enabling the resin to penetrate into the fabric. Then, placing the three-dimensional fabric in a mold, compressing the three-dimensional fabric to 2/3 (0.4 cm) with the original thickness, placing the three-dimensional fabric in an oven, heating and curing the three-dimensional fabric at the heating temperature of 40 ℃ for 6 hours; the glass fiber fabric reinforced unsaturated vinyl polyester resin radome composite material is obtained, and the structure diagram is shown in figure 1.

The test shows that the density of the composite material is 0.8 kg/cubic centimeter, the tensile strength is 281 MPa, and the transverse compression strength is 28 MPa. Dielectric constant 1.6 at 1-2GHz and dielectric loss 0.009.

Example 2

Quartz fiber fabric reinforced epoxy resin antenna housing composite material

Selecting quartz fiber (Hubei Philips Hua quartz glass GmbH) with the linear density of 800tex as warp yarn and weft yarn, selecting quartz fiber bulked yarn (Hubei Philips Hua quartz glass GmbH) with the linear density of 600tex as spacer yarn, adopting a multi-group heald frame weaving process, and further controlling the movement modes of the warp yarn and the spacer yarn by controlling heald frames; meanwhile, a multi-rapier weft insertion process is adopted, the motion mode of weft yarns is controlled, and the three-dimensional space fabric is woven. Fabric parameters: the warp and weft density is 12 pieces/cm; spacing yarn density: 12 roots/cm; the length of the fabric is 15 cm; width 10 cm and height 0.8 cm.

Step one, a weaving process: same as example 1

Step two, composite material curing process

Selecting epoxy resin (Guangzhou Hengyue chemical Co., Ltd., product number: E-51) and matched curing agent according to the volume ratio of 4: 1, preparing 800 ml of epoxy resin solution, coating the surface of the three-dimensional fabric by a hand pasting method, and enabling the resin to penetrate into the fabric. Then, placing the three-dimensional fabric in a mold, compressing the three-dimensional fabric to 1/2 (0.4 cm) with the original thickness, placing the three-dimensional fabric in an oven, heating and curing the three-dimensional fabric at the heating temperature of 80 ℃ for 8 hours; the quartz fiber fabric reinforced epoxy resin radome composite material is obtained, and the structure diagram is shown in fig. 2. The test shows that the density of the composite material is 0.9 kg/cubic centimeter, the tensile strength is 356 MPa, and the transverse compression strength is 35 MPa. Dielectric constant 1.2 at 1-2GHz and dielectric loss 0.006.