阅读说明：本技术 一种水泥无机泡沫类微波暗室用吸波角锥的制造方法 (Manufacturing method of wave-absorbing pyramid for cement inorganic foam microwave dark room ) 是由 胡益民 蒋艳军 郭涛 李新涛 樊迪刚 梁勇明 于 2021-09-01 设计创作，主要内容包括：本发明涉及吸波功能材料技术领域,具体涉及一种水泥无机泡沫类微波暗室用吸波角锥的制造方法；首先,制备出水泥浆料,然后,将聚苯乙烯泡沫珠粒与水泥浆料混合,形成浆料,然后注入模具中制备为成型三角锥,然后,将成型三角锥浸泡在碱性水溶液中,溶解聚苯乙烯泡沫珠粒,保留水泥骨架,形成无机泡沫三角锥,最后,将无机泡沫三角锥浸泡在吸收液中,制得无机泡沫角锥吸波材料,材料具有优良的阻燃性能和耐功率辐射性能,同时大大降低制作成本。(The invention relates to the technical field of wave-absorbing functional materials, in particular to a manufacturing method of a wave-absorbing pyramid for a cement inorganic foam microwave anechoic chamber; firstly, preparing cement slurry, then mixing polystyrene foam beads with the cement slurry to form slurry, then injecting the slurry into a mold to prepare a formed triangular cone, then soaking the formed triangular cone in an alkaline aqueous solution to dissolve the polystyrene foam beads, reserving a cement framework to form an inorganic foam triangular cone, and finally soaking the inorganic foam triangular cone in an absorption liquid to prepare the inorganic foam pyramid wave-absorbing material.)

1. A manufacturing method of a wave-absorbing pyramid for a cement inorganic foam microwave anechoic chamber is characterized by comprising the following steps:

obtaining water and portland cement in a certain proportion, and putting the water and the portland cement into a stirrer for stirring to obtain cement slurry;

mixing the cement slurry with a certain amount of polystyrene foam beads to form slurry, and preparing the slurry into a formed triangular pyramid;

soaking the formed triangular cone in an alkaline aqueous solution to dissolve polystyrene foam beads, and reserving a cement framework to form an inorganic foam triangular cone;

and soaking the inorganic foam triangular pyramid in an absorption liquid to prepare the inorganic foam triangular pyramid wave-absorbing material.

2. The method for manufacturing a wave-absorbing pyramid for a cement inorganic foam type micro-wave chamber according to claim 1, wherein water and portland cement are obtained in a certain proportion, and the water and the portland cement are put into a mixer to be mixed to obtain cement slurry, and the method further comprises:

the weight mixing ratio of the portland cement to water is 7: 3-5: 5.

3. The method for manufacturing a wave-absorbing pyramid for a cement inorganic foam type microwave darkroom as claimed in claim 1, wherein said cement paste is mixed with a certain amount of polystyrene foam beads to form a paste, and said paste is prepared into a shaped triangular pyramid, said method further comprising:

the mixing ratio of the polystyrene foam beads to the cement slurry is 30: 100-10: 100.

4. The method for manufacturing a wave-absorbing pyramid for a cement inorganic foam microwave darkroom according to claim 1, wherein the formed pyramid is immersed in an alkaline aqueous solution to dissolve polystyrene foam beads and retain a cement skeleton to form an inorganic foam pyramid, and the method further comprises:

the alkaline aqueous solution is sodium hydroxide aqueous solution.

5. The method for manufacturing a wave-absorbing pyramid for a cement inorganic foam microwave darkroom as claimed in claim 4, wherein said formed pyramid is immersed in an alkaline aqueous solution to dissolve polystyrene foam beads and retain a cement skeleton to form an inorganic foam pyramid, said method further comprising:

the concentration of sodium hydroxide in the sodium hydroxide aqueous solution is 5%.

6. The method for manufacturing a wave-absorbing pyramid for a cement inorganic foam microwave darkroom as claimed in claim 4, wherein said formed pyramid is immersed in an alkaline aqueous solution to dissolve polystyrene foam beads and retain a cement skeleton to form an inorganic foam pyramid, said method further comprising:

the soaking temperature for soaking the alkaline aqueous solution is 80 ℃, and the soaking time is 2-6 h.

7. The method for manufacturing a wave-absorbing pyramid for a cement inorganic foam type microwave darkroom as claimed in claim 3, wherein said cement paste is mixed with a certain amount of polystyrene foam beads to form a paste, and said paste is prepared into a shaped triangular pyramid, said method further comprising:

the polystyrene foam beads are polystyrene foam beads with the diameter of 2-4 mm.

Technical Field

The invention relates to the technical field of wave-absorbing functional materials, in particular to a manufacturing method of a wave-absorbing pyramid for a cement inorganic foam microwave darkroom.

Background

10kw/m resistant microwave darkroom²The high-power electromagnetic wave irradiation pyramid wave-absorbing material is manufactured by adopting aramid paper honeycombs as base materials and coating conductive carbon black slurry on the surface. But the cost of the honeycomb material always restricts the large-scale use of the wave-absorbing material.

In the prior art, ceramic pyramid wave-absorbing material is adopted, which can bear 50kw/m²The power irradiation is carried out, but the wave absorbing performance of the material is far lower than that of an aramid fiber paper honeycomb pyramid wave absorbing material, the density of a ceramic material is high, the manufacturing height is limited, and the cost is more expensive, so that the development of a low-cost inorganic foam pyramid wave absorbing material becomes the development focus of researching a high-power-resistant microwave wave absorbing material.

Disclosure of Invention

The invention aims to provide a method for manufacturing a wave-absorbing pyramid for a cement inorganic foam microwave anechoic chamber, and aims to solve the technical problem that a wave-absorbing material in the prior art is high in cost.

In order to achieve the purpose, the invention adopts a manufacturing method of a wave-absorbing pyramid for a cement inorganic foam microwave anechoic chamber, which comprises the following steps:

obtaining water and portland cement in a certain proportion, and putting the water and the portland cement into a stirrer for stirring to obtain cement slurry;

mixing the cement slurry with a certain amount of polystyrene foam beads to form slurry, and preparing the slurry into a formed triangular pyramid;

soaking the formed triangular cone in an alkaline aqueous solution to dissolve polystyrene foam beads, and reserving a cement framework to form an inorganic foam triangular cone;

and soaking the inorganic foam triangular pyramid in an absorption liquid to prepare the inorganic foam triangular pyramid wave-absorbing material.

Polystyrene foam beads and cement slurry are mixed to form slurry, the slurry is injected into a triangular cone mold to obtain a formed triangular cone, the formed triangular cone is soaked in an alkaline aqueous solution to dissolve the polystyrene foam beads, a cement framework is reserved to form an inorganic foam triangular cone, and the inorganic foam triangular cone is soaked in an absorption liquid to obtain the inorganic foam pyramid wave-absorbing material.

The method comprises the following steps of obtaining water and portland cement in a certain proportion, and putting the water and the portland cement into a stirrer for stirring to obtain cement slurry, wherein the method further comprises the following steps:

the weight mixing ratio of the portland cement to water is 7: 3-5: 5.

The cement slurry is composed of Portland cement and water, and the weight mixing ratio of the Portland cement to the water is 7: 3-5: 5.

Wherein the cement slurry is mixed with a quantity of polystyrene foam beads to form a slurry and the slurry is prepared into a shaped triangular pyramid, the method further comprising:

the mixing ratio of the polystyrene foam beads to the cement slurry is 30: 100-10: 100.

The mixing ratio of the polystyrene foam beads to the cement slurry is 30: 100-10: 100.

Wherein, the formed triangular cone is soaked in an alkaline aqueous solution to dissolve the polystyrene foam beads and retain the cement skeleton to form the inorganic foam triangular cone, and the method further comprises the following steps:

the alkaline aqueous solution is sodium hydroxide aqueous solution.

The polystyrene foam beads can be corroded by soaking with an aqueous solution of sodium hydroxide.

Wherein, the formed triangular cone is soaked in an alkaline aqueous solution to dissolve the polystyrene foam beads and retain the cement skeleton to form the inorganic foam triangular cone, and the method further comprises the following steps:

the concentration of sodium hydroxide in the sodium hydroxide aqueous solution is 5%.

An aqueous solution of sodium hydroxide having a sodium hydroxide concentration of 5% was used.

Wherein, the formed triangular cone is soaked in an alkaline aqueous solution to dissolve the polystyrene foam beads and retain the cement skeleton to form the inorganic foam triangular cone, and the method further comprises the following steps:

the soaking temperature for soaking the alkaline aqueous solution is 80 ℃, and the soaking time is 2-6 h.

Soaking at 80 deg.c for 2-6 hr to erode the foamed polystyrene beads.

Wherein the cement slurry is mixed with a quantity of polystyrene foam beads to form a slurry and the slurry is prepared into a shaped triangular pyramid, the method further comprising:

the polystyrene foam beads are polystyrene foam beads with the diameter of 2-4 mm.

The material has better preparation effect.

The invention relates to a manufacturing method of a wave-absorbing pyramid for a cement inorganic foam microwave darkroom, which comprises the steps of preparing cement slurry, mixing polystyrene foam beads with the cement slurry to form slurry, injecting the slurry into a mold to prepare a formed triangular pyramid, soaking the formed triangular pyramid in an alkaline aqueous solution to dissolve the polystyrene foam beads, retaining a cement framework to form an inorganic foam triangular pyramid, and finally soaking the inorganic foam triangular pyramid in an absorption liquid to prepare an inorganic foam pyramid wave-absorbing material.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a process diagram of the manufacturing method of the wave-absorbing pyramid for the cement inorganic foam type microwave dark room of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1, the present invention provides a method for manufacturing a wave-absorbing pyramid for a cement inorganic foam microwave chamber, comprising the following steps:

s101: and obtaining water and portland cement in a certain proportion, and putting the water and the portland cement into a stirrer for stirring to obtain cement slurry.

Specifically, firstly, water and portland cement are obtained, wherein the weight mixing ratio of the portland cement to the water is 7: 3-5: 5, then the water and the portland cement are placed into a stirrer to be stirred for at least 20 minutes to obtain cement slurry, and then the next step is carried out, wherein the materials are easy to obtain, and the cost is low.

S102: mixing the cement slurry with a quantity of polystyrene foam beads to form a slurry, and preparing the slurry into a shaped triangular pyramid.

Specifically, firstly, polystyrene foam beads with the diameter of 2-4 mm are obtained, the polystyrene foam beads and the cement slurry obtained in the step S101 are uniformly mixed to form slurry, wherein the mixing ratio of the polystyrene foam beads to the cement slurry is 30: 100-10: 100, then the slurry is introduced into a triangular cone mold, and the triangular cone is prepared through airing, drying and forming.

S103: and soaking the formed triangular cone in an alkaline aqueous solution to dissolve the polystyrene foam beads and retain the cement skeleton to form the inorganic foam triangular cone.

Specifically, the formed triangular pyramid prepared in the step S102 is soaked in an alkaline aqueous solution, wherein the alkaline aqueous solution is a sodium hydroxide aqueous solution, the concentration of the sodium hydroxide is 5%, and then the formed triangular pyramid is soaked for 2 to 6 hours at the temperature of 80 ℃, so that the polystyrene foam beads are dissolved in the alkaline aqueous solution, the cement skeleton in the polystyrene foam beads is reserved, and the inorganic foamed triangular pyramid is formed.

S104: and soaking the inorganic foam triangular pyramid in an absorption liquid to prepare the inorganic foam triangular pyramid wave-absorbing material.

Specifically, the inorganic foam triangular cone in the step S103 is soaked in an absorption liquid, wherein the absorption liquid is a wave absorbing liquid for soaking soft sponge, the material is easy to obtain, the liquid feeding amount is controlled in a liquid hanging mode for 1-3 times, and finally the inorganic foam triangular cone is obtained.

The manufacturing method of the wave-absorbing pyramid for the cement inorganic foam microwave darkroom adopts polystyrene foam beads to be mixed with cement slurry, an inorganic foam triangular pyramid structure is formed through airing, drying and corrosion, the inorganic foam triangular pyramid is soaked in wave-absorbing soaking, and the wave-absorbing pyramid wave-absorbing material is prepared through multiple times of soaking and drying.

The specific implementation mode is as follows:

the invention is further illustrated by the following examples. It should be understood that the examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

TABLE 1 weight ratio of raw material components, process parameters and properties of inorganic foam pyramid absorbing material in examples 1-5

Example 1

30 g of water and 70 g of silicate cement were weighed according to the weight of example 1 in Table 1, stirred for 20 minutes by a stirrer to form cement paste, 30 g of polystyrene foam beads having a diameter of 3mm and 100 g of cement paste were uniformly mixed, poured into a triangular pyramid mold, and air-dried and molded to form a molded triangular pyramid. And soaking the formed triangular pyramid in 5% alkaline water solution for 6 hr to dissolve polystyrene beads to form the inorganic foamed triangular pyramid. The inorganic foam triangular cone is soaked in the absorption liquid and is hung for 3 times, the hanging amount of each time is shown in example 1 of the table 1, and the inorganic foam triangular cone is dried. And measuring the surface resistance value of the inorganic foam pyramid by using a surface resistance meter to be 1200-1600 omega.

Example 2

35 g of water and 65 g of silicate cement were weighed according to the weight of example 2 in Table 1, stirred for 20 minutes by a stirrer to form cement paste, 25 g of polystyrene foam beads having a diameter of 3mm and 100 g of cement paste were uniformly mixed, poured into a triangular pyramid mold, and air-dried and molded to form a molded triangular pyramid. And soaking the formed triangular pyramid in 5% alkaline water solution for 4 hr to dissolve polystyrene beads to form the inorganic foamed triangular pyramid. The inorganic foam triangular cone is soaked in the absorption liquid and is hung for 2 times, the hanging amount of each time is shown in example 2 of the table 1, and the inorganic foam triangular cone is dried. And the surface resistance value of the inorganic foam pyramid is 1800-2300 omega measured by a surface resistance meter.

Example 3

40 g of water and 60 g of silicate cement were weighed according to the weight of example 3 in Table 1, stirred for 20 minutes by a stirrer to form cement paste, 20 g of polystyrene foam beads having a diameter of 3mm and 100 g of cement paste were uniformly mixed, poured into a triangular pyramid mold, and air-dried and molded to form a molded triangular pyramid. And soaking the formed triangular pyramid in 5% alkaline water solution for 4 hr to dissolve polystyrene beads to form the inorganic foamed triangular pyramid. The inorganic foam triangular cone is soaked in the absorption liquid and is hung in the liquid for 2 times, the hanging amount of each time is shown in example 3 of the table 1, and the inorganic foam triangular cone is dried. And measuring the surface resistance value of the inorganic foam pyramid by using a surface resistance meter to be 2000-2800 omega.

Example 4

45 g of water and 55 g of silicate cement were weighed according to the weight of example 3 in Table 1, stirred for 20 minutes by a stirrer to form cement paste, 15 g of polystyrene foam beads having a diameter of 3mm was uniformly mixed with 100 g of cement paste, poured into a triangular pyramid mold, and air-dried and molded to form a molded triangular pyramid. And soaking the formed triangular pyramid in 5% alkaline water solution for 2 hr to dissolve polystyrene beads to form the inorganic foamed triangular pyramid. The inorganic foam triangular cone is soaked in the absorption liquid and is hung for 2 times, the hanging amount of each time is shown in example 4 of the table 1, and the inorganic foam triangular cone is dried. And measuring the surface resistance value of the inorganic foam pyramid by using a surface resistance meter to be 2500-3000 omega.

Example 5

A cement slurry was prepared by weighing 50 g of water and 50 g of a silicate cement slurry in the weight ratio of example 3 of Table 1, stirring the mixture with a stirrer for 20 minutes, mixing 10 g of polystyrene foam beads having a diameter of 3mm with 100 g of the cement slurry uniformly, pouring the mixture into a triangular pyramid mold, and air-drying and molding the mixture to form a molded triangular pyramid. And soaking the formed triangular pyramid in 5% alkaline water solution for 2 hr to dissolve polystyrene beads to form the inorganic foamed triangular pyramid. The inorganic foam triangular cone is soaked in the absorption liquid and is hung for 1 time, the hanging amount of each time is shown in example 5 of the table 1, and the inorganic foam triangular cone is dried. And measuring the surface resistance value of the inorganic foam pyramid by using a surface resistance meter to be 3000-5000 omega.

Polystyrene foam beads and cement slurry are mixed, and then the mixture is aired, dried and corroded to form an inorganic foam triangular cone structure. The inorganic foam pyramid wave-absorbing material is prepared by soaking the inorganic foam pyramid in wave-absorbing impregnation, impregnating for multiple times and drying, has excellent flame retardant property and power radiation resistance, and is expected to become the development direction of the low-cost high-power-resistant pyramid wave-absorbing material.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.