CN111533526B

CN111533526B - Radiation-proof material and preparation method of wall board

Info

Publication number: CN111533526B
Application number: CN202010396463.XA
Authority: CN
Inventors: 葛庭洪
Original assignee: Zhangjiagang Shenggang Environment Fireproof Construction Material Co Ltd
Current assignee: Zhangjiagang Shenggang Environment Fireproof Construction Material Co Ltd
Priority date: 2020-05-12
Filing date: 2020-05-12
Publication date: 2022-05-17
Anticipated expiration: 2040-05-12
Also published as: CN111533526A

Abstract

The invention discloses a radiation-proof material and a preparation method of a wall body plate, and relates to the field of building materials. In the application, the radiation-proof material comprises the following raw materials in parts by weight: the slurry I and the slurry IV comprise the following components: 100 parts of magnesium oxide, 30-36 parts of magnesium sulfate, 80-100 parts of water, 400 parts of 120-mesh 150-mesh barium sulfate 350-. This application can improve wall body board density when the radiation protection wall body board has stronger radioresistance performance, and resistance to compression, rupture strength keep more stable scope.

Description

Radiation-proof material and preparation method of wall board

Technical Field

The invention relates to the field of building materials, in particular to a radiation-proof material and a preparation method of a wall body plate.

Background

With the rapid development of the electronic industry, electronic and electric equipment is ubiquitous. The devices can generate electromagnetic radiation while greatly improving the living standard of people and promoting the social development.

Scientific research shows that the physical and mental health of people can be seriously threatened after being in an electromagnetic wave radiation environment for a long time, and the protection on electromagnetic radiation is mainly realized by two aspects: shielding and absorption, but electromagnetic shielding can not eliminate or weaken electromagnetic radiation fundamentally, and has great difficulty in construction, and simultaneously, reflected electromagnetic waves can be superposed with incident waves, which easily causes repeated pollution or damage to other equipment units. Only electromagnetic wave absorbing materials are used to convert electromagnetic energy into other forms of energy and consume the electromagnetic waves.

The anti-radiation product manufactured by the prior art can greatly reduce the self impact resistance after having a partial shielding effect, so that the brittleness is high, and therefore, a wall material with the anti-radiation and anti-impact requirements is needed.

Disclosure of Invention

The invention aims to provide a radiation-proof material, which is used for solving the problem that a wall material in the prior art cannot meet the requirements of radiation protection and impact resistance.

In order to achieve the above purpose, the embodiments of the present application adopt the following technical solutions: the radiation-proof material comprises the following raw materials in parts by weight:

the slurry I and the slurry IV comprise the following components:

in above-mentioned technical scheme, this application embodiment can reduce wall body board porosity through adding barium sulfate in radiation protection material for when preparing the wall body board, reach the effect that density improves compressive strength is high, and the barium sulfate of adding simultaneously can improve the radiation resistance ability of wall body board.

Further, according to the embodiment of the application, the radiation-proof material further comprises the following raw materials in parts by weight:

the slurry II and the slurry III comprise the following components:

further, according to the embodiment of the present application, the magnesium oxide is magnesite powder or light calcined powder.

Further, according to the embodiment of the application, the magnesia is light calcined powder, the content of magnesia in the light calcined powder is more than 80%, the activity is more than 55%, and the loss on ignition is 3-9%.

Further, according to the embodiment of the application, the purity of the magnesium sulfate is more than 99%, and the chloride content in the magnesium sulfate is less than 0.2%.

Further, according to the embodiment of the application, the raw material of the water reducing agent is any one of calcium lignosulfonate, sodium lignosulfonate, magnesium lignosulfonate, tannin, sulfonated melamine resin, sulfonated coumarone resin, sodium polycarboxylate, polyacrylate and aliphatic hydroxymethyl sulfonate high polymer.

Further, according to the embodiment of the application, the raw material of the water repellent agent is any one of ferrous sulfate, zinc sulfate and copper sulfate.

In addition, the embodiment of the application also adopts another technical scheme that: an anti-radiation plate is made of the anti-radiation material.

Secondly, the embodiment of the application also adopts another technical scheme that: a radiation-proof wall panel, comprising a substrate, wherein the substrate comprises a first middle material layer, a first non-woven fabric layer, a first grid cloth layer, a second middle material layer, a second grid cloth layer, a third middle material layer, a third grid cloth layer, a fourth middle material layer, a fourth non-woven fabric layer and a fourth grid cloth layer, wherein the first middle material layer, the second middle material layer, the third middle material layer and the fourth middle material layer are made of a radiation-proof material according to any one of claims 2 to 8.

Further, according to the embodiment of the present application, wherein the first middle material layer and the fourth middle material layer are made of the first slurry and the fourth slurry in the radiation protective material according to any one of claims 2 to 8.

Further, according to the embodiment of the present application, wherein the second intermediate material layer and the third intermediate material layer are made of the second slurry and the third slurry in the radiation protective material according to any one of claims 2 to 8.

Further, according to the embodiment of the application, the wall body plate is formed by compounding at least two layers of base plates up and down.

Finally, the embodiment of the application also adopts another technical scheme that: a preparation method of a radiation-proof wall body plate comprises the following steps: preparing solution, preparing medium slurry, manufacturing a substrate, cutting, sanding and compounding; wherein the slurry is a radiation protective material according to any one of claims 2 to 8.

Further, according to the embodiment of the present application, the solution is divided into a first solution and a second solution, and the first solution is prepared by the following steps: according to the formula proportion, 30-36 parts by weight of magnesium sulfate, 1-6 parts by weight of citric acid, 2-5 parts by weight of trisodium phosphate, 1-4 parts by weight of water reducing agent and 1-3 parts by weight of water repellent agent are added into 80-100 parts by weight of water, and the mixture is stirred for 2min to obtain solution I.

Further, according to the embodiment of the present application, the preparation method of the second solution is as follows: according to the formula proportion, 34-40 parts by weight of magnesium sulfate, 1-6 parts by weight of citric acid, 2-5 parts by weight of trisodium phosphate, 1-4 parts by weight of water reducing agent and 1-3 parts by weight of water repellent agent are added into 80-120 parts by weight of water, and the mixture is stirred for 2min to prepare a solution II.

Further, according to the embodiment of the present application, the intermediate slurry is divided into intermediate slurry one, intermediate slurry two, intermediate slurry three, and intermediate slurry four, and the preparation method of the intermediate slurry one and the intermediate slurry four is as follows: according to the formula proportion, 400 parts by weight of 350-400 parts by weight of 120-mesh barium sulfate is added into the solution I, mixed and stirred for 2min, and then 100 parts by weight of magnesium oxide is added and stirred for 4min to prepare the medium size I and the medium size IV.

Further, according to the embodiments of the present application, the preparation method of the second intermediate slurry and the third intermediate slurry is as follows: according to the formula proportion, 400 parts by weight of 350-50 mesh barium sulfate is added into the second solution, mixed and stirred for 2min, and then 100 parts by weight of magnesium oxide is added and stirred for 4min to prepare the second and third intermediate slurries.

Further, according to an embodiment of the present application, the manufacturing method of the substrate includes: coating emulsified oil on a template, pouring slurry on the template, then respectively paving non-woven fabric and glass fiber mesh cloth on the slurry to form a first intermediate material layer, pouring slurry on the first intermediate material layer, then paving the glass fiber mesh cloth on the slurry to form a second intermediate material layer, pouring slurry on the second intermediate material layer, then paving the glass fiber mesh cloth on the slurry to form a third intermediate material layer, pouring slurry on the third intermediate material layer, and then respectively paving the non-woven fabric and the glass fiber mesh cloth on the slurry to form a fourth intermediate material layer.

Further, according to an embodiment of the present application, wherein the compounding step includes: and combining the two layers of substrates up and down.

Compared with the prior art, the method has the following technical effects: according to the embodiment of the application, the prepared plate can form a stable crystalline phase structure by adding citric acid and trisodium phosphate into the magnesium sulfate material, so that the effect of prolonging the service life of the plate is achieved. The porosity of the plate is reduced by adding the barium sulfate with 120-150 meshes, so that the density of the plate is improved, and the compressive strength is increased. And meanwhile, the addition of 20-50 meshes of barium sulfate enables the prepared plate to have better radiation resistance.

Detailed Description

In order to make the objects and technical solutions of the present invention clear and fully described, and the advantages thereof more apparent, embodiments of the present invention are described in further detail below. It is to be understood that the specific embodiments described herein are merely illustrative of some embodiments of the invention and are not limiting of the invention, and that all other embodiments obtained by those of ordinary skill in the art without the exercise of inventive faculty are within the scope of the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", etc. indicate orientations or positional relationships, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "a," "an," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

For the purposes of simplicity and explanation, the principles of the embodiments are described by referring mainly to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one skilled in the art that the embodiments may be practiced without these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.

The first embodiment is as follows:

the application provides a radiation protection material makes the panel porosity who makes through adding barium sulfate and reduces to reach the effect that improves compressive strength and increase radioresistance ability, specifically include following component: slurry one, slurry two, slurry three and slurry four. The first slurry and the fourth slurry comprise the following components: magnesium oxide, magnesium sulfate, water, 120-mesh barium sulfate, citric acid, trisodium phosphate, a water reducing agent and a water repellent agent. The second slurry and the third slurry comprise the following components: magnesium oxide, magnesium sulfate, water, 20-50 mesh barium sulfate, citric acid, trisodium phosphate, a water reducing agent and a water repellent agent.

Wherein, relative to 100 weight portions of the first sizing agent and the fourth sizing agent of magnesium oxide, 25 to 40 weight portions of magnesium sulfate, 1 to 10 weight portions of citric acid, 1 to 6 weight portions of trisodium phosphate, and 450 weight portions of 120-mesh 150-mesh barium sulfate, relative to 100 weight portions of the second sizing agent and the third sizing agent of magnesium oxide, 25 to 45 weight portions of magnesium sulfate, 1 to 10 weight portions of citric acid, 1 to 6 weight portions of trisodium phosphate, and 450 weight portions of 20-50-mesh 300-mesh barium sulfate form the mixture preparation plate. The existing board made of barium sulfate also has radiation-proof performance, but the board made of hard and brittle materials is easy to crack in use and has weaker impact resistance, and wood fiber or metal or carbon composite fiber is usually added into the slurry to solve the problem in the prior art to increase the compressive strength of the board. However, the addition of other substances requires adjustment between the various substances to achieve the desired properties. In view of the above points, in order to make the plate have better anti-radiation performance and better impact resistance, the raw material magnesium sulfate for the first slurry and the fourth slurry is preferably 30-36 parts by weight, the citric acid is preferably 1-6 parts by weight, the trisodium phosphate is 2-5 parts by weight, the 120-mesh 150-mesh barium sulfate is 350-400 parts by weight, the raw material magnesium sulfate for the second slurry and the third slurry is preferably 34-40 parts by weight, the citric acid is 1-6 parts by weight, the trisodium phosphate is 2-5 parts by weight, and the 20-50-mesh barium sulfate is 350-400 parts by weight.

The magnesium oxide can be selected from bitter powder or light calcined powder, preferably high-purity light calcined powder, and has magnesium oxide content of more than 80%, activity of more than 55%, and ignition loss of 3-9%. The raw material of the magnesium sulfate solution is selected from pure magnesium sulfate, the purity of the magnesium sulfate is more than 99 percent, and the content of chloride in the magnesium sulfate is less than 0.2 percent.

In addition, the content of 120-mesh barium sulfate was 300-450 parts by weight relative to 100 parts by weight of magnesium oxide in the first slurry and the fourth slurry. By adding more than 300 parts by weight of 120-150-mesh barium sulfate, the porosity of the coating can be reduced, the density effect of the coating is improved, and cracks are reduced. By adding less than 450 parts by weight of 120-150-mesh barium sulfate, the strength of the steel can be ensured not to be too low while the effect is achieved. From the above viewpoint, further, 120-150 mesh barium sulfate is preferably 350-400 parts by weight.

Relative to 100 parts by weight of magnesium oxide in the first slurry and the fourth slurry, 1-10 parts by weight of citric acid and 1-6 parts by weight of trisodium phosphate are used for prolonging the service life of the plate. By adding more than 1 part by weight of citric acid and more than 1 part by weight of trisodium phosphate, the service life of the plate made of the radiation-proof material is prolonged to more than 2 times of the original service life. By adding less than 10 parts by weight of citric acid and less than 6 parts by weight of trisodium phosphate, the effect can be achieved, and the formed crystalline phase structure is ensured to be relatively stable, so that the service life of the plate is not influenced. For this reason, citric acid is preferably 1 to 6 parts by weight, and trisodium phosphate is preferably 2 to 5 parts by weight.

Compared with 100 parts by weight of magnesium oxide in the first slurry and the fourth slurry, 1-7 parts by weight of water reducing agent and 1-7 parts by weight of water repellent agent are used for improving the strength of the plate. By adding more than 1 part by weight of water reducing agent and more than 1 part by weight of water repellent agent, the board made of the radiation-proof material can reduce mixing water under the condition of keeping fluidity and water consumption, so that the proportion of barium sulfate to water is reduced, and the strength of the board is improved. And by adding the water reducing agent of less than 7 parts by weight and the water repellent agent of less than 7 parts by weight, the density of the prepared plate can be ensured and the durability can be improved while the effect is achieved. Based on this, the water reducing agent is preferably 1 to 4 parts by weight, and the water repellent agent is preferably 1 to 3 parts by weight.

The magnesium sulfate is preferably 30 to 36 parts by weight and the water is preferably 80 to 100 parts by weight, based on 100 parts by weight of magnesium oxide in the first slurry and the fourth slurry, respectively, the magnesium sulfate is 25 to 40 parts by weight and the water is 70 to 110 parts by weight, and the magnesium sulfate and the water are mixed uniformly.

Relative to 100 parts by weight of magnesium oxide in the second slurry and the third slurry, the content of 20-50 meshes of barium sulfate is 300-450 parts by weight. By adding more than 300 parts by weight of 20-50 mesh barium sulfate, the radiation resistance of the plate can be improved, and the electromagnetic radiation damage can be reduced. By adding less than 450 parts by weight of 20-50 mesh barium sulfate, the strength of the steel can be ensured not to be too low while the effect is achieved. From the above viewpoint, further, the 20-50 mesh barium sulfate is preferably 350-400 parts by weight.

Compared with 100 parts by weight of magnesium oxide in the second slurry and the third slurry, 1-10 parts by weight of citric acid and 1-6 parts by weight of trisodium phosphate are used for prolonging the service life of the plate. By adding more than 1 part by weight of citric acid and more than 1 part by weight of trisodium phosphate, the service life of the plate made of the radiation-proof material is prolonged to more than 2 times of the original service life. By adding less than 10 parts by weight of citric acid and less than 6 parts by weight of trisodium phosphate, the effect can be achieved, and the formed crystalline phase structure is ensured to be relatively stable, so that the service life of the plate is not influenced. For this reason, citric acid is preferably 1 to 6 parts by weight, and trisodium phosphate is preferably 2 to 5 parts by weight.

Compared with 100 parts by weight of magnesium oxide in the second slurry and the third slurry, 1-7 parts by weight of water reducing agent and 1-7 parts by weight of water repellent agent are used, so that the strength of the plate is improved. By adding more than 1 part by weight of water reducing agent and more than 1 part by weight of water repellent agent, the board made of the radiation-proof material can reduce mixing water under the condition of keeping fluidity and water consumption, so that the proportion of barium sulfate to water is reduced, and the strength of the board is improved. And by adding the water reducing agent of less than 7 parts by weight and the water repellent agent of less than 7 parts by weight, the density of the prepared plate can be ensured and the durability can be improved while the effect is achieved. Based on this, the water reducing agent is preferably 1 to 4 parts by weight, and the water repellent agent is preferably 1 to 3 parts by weight.

The magnesium sulfate is preferably 34 to 40 parts by weight and the water is preferably 80 to 120 parts by weight, based on 100 parts by weight of magnesium oxide in the second and third slurries, respectively, based on 25 to 45 parts by weight of magnesium sulfate and 70 to 110 parts by weight of water mixed together.

The water reducing agent is selected from one or more of calcium lignosulfonate, sodium lignosulfonate, magnesium lignosulfonate, tannin, sulfonated melamine resin, sulfonated coumarone resin, sodium polycarboxylate, polyacrylate and aliphatic hydroxymethyl sulfonate high condensation polymer, preferably calcium lignosulfonate.

The water repellent agent is one or more of ferrous sulfate, zinc sulfate and aluminum sulfate, preferably ferrous sulfate.

The radiation-proof material can be made into a radiation-proof plate, the density of the radiation-proof plate can be improved through the 120-mesh and 150-mesh barium sulfate, the compressive strength of the radiation-proof plate is improved, and the effect of high toughness is achieved. In addition, the 20-50 mesh barium sulfate added into the radiation-proof plate can ensure that the radiation-proof plate has better pressure resistance and higher radiation resistance. The anti-radiation plate can improve the compressive strength and the anti-radiation performance, and meanwhile, citric acid and trisodium phosphate are added into the anti-radiation material to enhance the crystalline phase structure of the anti-radiation material, so that the service life of the anti-radiation plate in the later period is prolonged.

The radiation-proof wall body plate can be made of the radiation-proof material, the substrate comprises a first middle material layer, a first non-woven fabric layer, a second middle material layer, a second non-woven fabric layer, a third middle material layer, a third non-woven fabric layer, a fourth middle material layer and a fourth non-woven fabric layer, and the first middle material layer, the second middle material layer, the third middle material layer and the fourth middle material layer are made of the radiation-proof material. This wall body board has compressive strength height, long service life, radiation resistance effect such as stable equally, and in addition, multilayer thick liquids and multilayer screen cloth evenly distributed structure, the rupture strength is higher.

Specifically, the first intermediate material layer and the fourth intermediate material layer are made of the first slurry and the fourth slurry.

Specifically, the second intermediate material layer and the third intermediate material layer are made of the second slurry and the third slurry.

Specifically, the wallboard is formed by two-layer base plate upper and lower complex, makes the wallboard have higher compressive strength through the complex of two-layer base plate, and two-layer base plate also can more effectual absorption electromagnetic radiation when facing electromagnetic radiation simultaneously.

Wherein the first mesh fabric layer, the second mesh fabric layer, the third mesh fabric layer and the fourth mesh fabric layer are plain woven fabric or interwoven fabric, and the gram weight is 60-180 g/square meter. The first mesh fabric layer, the second mesh fabric layer, the third mesh fabric layer and the fourth mesh fabric layer are preferably non-woven interwoven fabrics, and the gram weight is 120 g/square meter.

Secondly, the first middle material layer and the fourth middle material layer comprise 100 parts by weight of light-burned magnesium oxide, 25-40 parts by weight of magnesium sulfate, 300-450 parts by weight of 120-mesh 150-mesh barium sulfate, 1-10 parts by weight of citric acid and 1-6 parts by weight of trisodium phosphate. The second medium material layer and the third medium material layer comprise 100 weight parts of light-burned magnesium oxide, 25-45 weight parts of magnesium sulfate, 300-450 weight parts of 20-50 mesh barium sulfate, 1-10 weight parts of citric acid and 1-6 weight parts of trisodium phosphate. And the first middle material layer, the second middle material layer, the third middle material layer and the fourth middle material layer are made of magnesium oxysulfate radiation-proof materials, and have the advantages of high compressive strength, good radiation-proof performance and the like. Wherein, the magnesium sulfate of the first middle material layer and the fourth middle material layer is preferably 30-36 parts by weight, the 120-mesh 150-mesh barium sulfate is preferably 400 parts by weight, the citric acid is preferably 1-6 parts by weight, and the trisodium phosphate is preferably 2-5 parts by weight. The magnesium sulfate in the second and third intermediate material layers is preferably 34-40 parts by weight, the 20-50 mesh barium sulfate is preferably 400 parts by weight, the citric acid is preferably 1-6 parts by weight, and the trisodium phosphate is preferably 2-5 parts by weight.

The preparation method of the radiation-proof wall plate comprises the following steps: preparing solution, preparing medium slurry, manufacturing a substrate, cutting, sanding and compounding.

When the solution is prepared, 30-36 parts by weight of magnesium sulfate, 1-6 parts by weight of citric acid, 2-5 parts by weight of trisodium phosphate, 1-4 parts by weight of water reducing agent and 1-3 parts by weight of water repellent agent are taken, then 80-100 parts by weight of water is added into the mixed slurry, and the mixture is stirred for 2min to prepare the first solution.

When the solution is prepared, 34-40 parts by weight of magnesium sulfate, 1-6 parts by weight of citric acid, 2-5 parts by weight of trisodium phosphate, 1-4 parts by weight of water reducing agent and 1-3 parts by weight of water repellent agent are taken, then 80-120 parts by weight of water is added into the mixed slurry, and the solution II is prepared after stirring for 2 min.

When preparing the medium slurry, 400 parts by weight of 350-400 parts by weight of 120-mesh barium sulfate is added into the solution I to be mixed and stirred for 2min, and then 100 parts by weight of magnesium oxide is added to be stirred for 4min to prepare the medium slurry I and the medium slurry IV.

When preparing the medium slurry, 400 parts by weight of 350-50 mesh barium sulfate is added into the solution II to be mixed and stirred for 2min, and then 100 parts by weight of magnesium oxide is added to be stirred for 4min to prepare medium slurry II and medium slurry III.

When the substrate is manufactured, emulsified oil is coated on a template, slurry is poured on the template, then non-woven fabric and glass fiber mesh cloth are respectively paved on the slurry to form a first middle material layer, slurry is poured on the first middle material layer, then the glass fiber mesh cloth is paved on the slurry to form a second middle material layer, slurry is poured on the second middle material layer, then the glass fiber mesh cloth is paved on the slurry to form a third middle material layer, slurry is poured on the third middle material layer, and then the non-woven fabric and the glass fiber mesh cloth are respectively paved on the slurry to form a fourth middle material layer.

After the base plate is manufactured, the base plate is sanded, and then the two layers of base plates are compounded up and down to finally manufacture the wall body plate.

The present application will be described in further detail with reference to examples, but the present application is not limited to these examples.

[ example 1 ]

Taking 30 parts by weight of magnesium sulfate, 4 parts by weight of citric acid, 3 parts by weight of trisodium phosphate, 4 parts by weight of water reducing agent and 3 parts by weight of water repellent agent, then adding 85 parts by weight of water into the mixed slurry, and stirring for 2min to obtain solution I.

And adding 350 parts by weight of 120-mesh 150-mesh barium sulfate into the solution I, mixing and stirring for 2min, and then adding 100 parts by weight of magnesium oxide, and stirring for 4min to obtain a first intermediate slurry and a fourth intermediate slurry.

Taking 36 parts by weight of magnesium sulfate, 5 parts by weight of citric acid, 3 parts by weight of trisodium phosphate, 4 parts by weight of water reducing agent and 3 parts by weight of water repellent agent, then adding 90 parts by weight of water into the mixed slurry, and stirring for 2min to obtain a solution II.

And adding 400 parts by weight of 20-50 mesh barium sulfate into the solution II, mixing and stirring for 2min, then adding 100 parts by weight of magnesium oxide, and stirring for 4min to obtain medium slurry II and medium slurry III.

Coating emulsified oil on the template, pouring the first medium slurry on the template, then respectively paving the non-woven fabric and the glass fiber mesh cloth on the slurry, and carrying out first rolling to enable the glass fiber mesh cloth to sink into the first medium slurry to form a first medium material layer, wherein the thickness of the first medium material layer is 0.5-1.5 mm. And then, pouring a second intermediate material layer on the first intermediate material layer, flatly paving the glass fiber gridding cloth on the second intermediate material layer, and performing second rolling to enable the glass fiber gridding cloth to sink into the second intermediate material layer to form a second intermediate material layer, wherein the thickness of the second intermediate material layer is 2-20 mm. And then, pouring a third middle material layer on the second middle material layer, flatly paving the glass fiber gridding cloth on the third middle material layer, and carrying out third rolling, wherein the glass fiber gridding cloth is sunk into the third middle material layer to form a third middle material layer, and the thickness of the third middle material layer is 2-20 mm. And finally, pouring a middle slurry layer IV on the third middle material layer, sequentially paving the glass fiber mesh cloth and the non-woven fabric on the middle slurry layer IV, rolling for the fourth time to enable the non-woven fabric and the glass fiber mesh cloth to be sunk into the middle slurry layer IV to form a fourth middle material layer, wherein the thickness of the fourth middle material layer is 0.5-1.5mm, and demolding after curing for 12 hours to obtain the radiation-proof substrate.

After the base plate is manufactured, the two base plates are cut and sanded, and then the two base plates are compounded up and down to finally manufacture the wall body plate with the thickness of 84 mm.

[ example 2 ]

And adding 360 parts by weight of 120-mesh 150-mesh barium sulfate into the solution I, mixing and stirring for 2min, and then adding 100 parts by weight of magnesium oxide, and stirring for 4min to prepare a first intermediate slurry and a fourth intermediate slurry.

[ example 3 ]

370 parts by weight of 120-mesh barium sulfate is added into the solution I, mixed and stirred for 2min, and then 100 parts by weight of magnesium oxide is added and stirred for 4min to prepare a first intermediate slurry and a fourth intermediate slurry.

[ example 4 ]

380 parts by weight of 120-mesh barium sulfate with 150 meshes is added into the solution I to be mixed and stirred for 2min, and then 100 parts by weight of magnesium oxide is added to be stirred for 4min to prepare the first intermediate slurry and the fourth intermediate slurry.

[ example 5 ]

390 weight parts of 120-mesh barium sulfate with 150 meshes is added into the solution I to be mixed and stirred for 2min, and then 100 weight parts of magnesium oxide is added to be stirred for 4min to prepare the first intermediate slurry and the fourth intermediate slurry.

[ example 6 ]

Adding 400 parts by weight of 120-mesh 150-mesh barium sulfate into the solution I, mixing and stirring for 2min, then adding 100 parts by weight of magnesium oxide, and stirring for 4min to obtain a first intermediate slurry and a fourth intermediate slurry.

Comparative example 1

Adding 340 parts by weight of 120-mesh 150-mesh barium sulfate into the solution I, mixing and stirring for 2min, then adding 100 parts by weight of magnesium oxide, and stirring for 4min to obtain a first intermediate slurry and a fourth intermediate slurry.

Coating emulsified oil on the template, pouring the first medium slurry on the template, then respectively paving the non-woven fabric and the glass fiber mesh cloth on the slurry, and carrying out first rolling to enable the glass fiber mesh cloth to sink into the first medium slurry to form a first medium material layer, wherein the thickness of the first medium material layer is 0.5-1.5 mm. Then, pouring a second intermediate material layer on the first intermediate material layer, flatly paving the glass fiber gridding cloth on the second intermediate material layer, and performing second rolling to enable the glass fiber gridding cloth to be sunk into the second intermediate material layer to form a second intermediate material layer, wherein the thickness of the second intermediate material layer is 2-20 mm. And then, pouring a third middle material layer on the second middle material layer, flatly paving the glass fiber gridding cloth on the third middle material layer, and carrying out third rolling, wherein the glass fiber gridding cloth is sunk into the third middle material layer to form a third middle material layer, and the thickness of the third middle material layer is 2-20 mm. And finally, pouring a middle slurry layer IV on the third middle material layer, sequentially paving the glass fiber mesh cloth and the non-woven fabric on the middle slurry layer IV, rolling for the fourth time to enable the non-woven fabric and the glass fiber mesh cloth to be sunk into the middle slurry layer IV to form a fourth middle material layer, wherein the thickness of the fourth middle material layer is 0.5-1.5mm, and demolding after curing for 12 hours to obtain the radiation-proof substrate.

Comparative example 2

And adding 410 parts by weight of 120-mesh 150-mesh barium sulfate into the solution I, mixing and stirring for 2min, and then adding 100 parts by weight of magnesium oxide, and stirring for 4min to obtain a first intermediate slurry and a fourth intermediate slurry.

[ example 7 ]

And adding 350 parts by weight of 20-50 mesh barium sulfate into the solution II, mixing and stirring for 2min, then adding 100 parts by weight of magnesium oxide, and stirring for 4min to obtain medium slurry II and medium slurry III.

[ example 8 ]

And adding 360 parts by weight of 20-50 mesh barium sulfate into the solution II, mixing and stirring for 2min, then adding 100 parts by weight of magnesium oxide, and stirring for 4min to obtain medium slurry II and medium slurry III.

[ example 9 ]

370 parts by weight of 20-50 mesh barium sulfate is added into the second solution, mixed and stirred for 2min, and then 100 parts by weight of magnesium oxide is added and stirred for 4min to obtain second medium size slurry and third medium size slurry.

[ example 10 ]

And adding 380 parts by weight of 20-50 mesh barium sulfate into the solution II, mixing and stirring for 2min, then adding 100 parts by weight of magnesium oxide, and stirring for 4min to obtain medium slurry II and medium slurry III.

[ example 11 ]

And adding 390 weight parts of 20-50 mesh barium sulfate into the solution II, mixing and stirring for 2min, then adding 100 weight parts of magnesium oxide, and stirring for 4min to obtain medium slurry II and medium slurry III.

Coating emulsified oil on the template, pouring the first medium slurry on the template, then respectively paving the non-woven fabric and the glass fiber mesh cloth on the slurry, and carrying out first rolling to enable the glass fiber mesh cloth to sink into the first medium slurry to form a first medium material layer, wherein the thickness of the first medium material layer is 0.5-1.5 mm. And then, pouring a second intermediate material layer on the first intermediate material layer, flatly paving the glass fiber gridding cloth on the second intermediate material layer, and performing second rolling to enable the glass fiber gridding cloth to sink into the second intermediate material layer to form a second intermediate material layer, wherein the thickness of the second intermediate material layer is 2-20 mm. Then, pouring a third intermediate material layer on the second intermediate material layer, flatly paving the glass fiber gridding cloth on the third intermediate material layer, and performing third rolling, wherein the glass fiber gridding cloth is sunk into the third intermediate material layer to form a third intermediate material layer, and the thickness of the third intermediate material layer is 2-20 mm. And finally, pouring a middle slurry layer IV on the third middle material layer, sequentially paving the glass fiber mesh cloth and the non-woven fabric on the middle slurry layer IV, rolling for the fourth time to enable the non-woven fabric and the glass fiber mesh cloth to be sunk into the middle slurry layer IV to form a fourth middle material layer, wherein the thickness of the fourth middle material layer is 0.5-1.5mm, and demolding after curing for 12 hours to obtain the radiation-proof substrate.

[ example 12 ]

Comparative example 3

And adding 340 parts by weight of 20-50-mesh barium sulfate into the solution II, mixing and stirring for 2min, then adding 100 parts by weight of magnesium oxide, and stirring for 4min to obtain medium slurry II and medium slurry III.

Comparative example 4

And adding 410 parts by weight of 20-50-mesh barium sulfate into the solution II, mixing and stirring for 2min, then adding 100 parts by weight of magnesium oxide, and stirring for 4min to obtain medium slurry II and medium slurry III.

The density, flexural strength, softening coefficient, compressive strength and radiation shielding performance of the materials of the examples and the comparative examples were measured by the following methods:

(1) apparent density (kg/m)³): the determination was based on JC 646.

Calculating the density (t/m) of the material according to the measured apparent density³) The calculation formula is as follows: apparent density/open cell content. The opening ratio (%) is the area/cross-sectional area of the hole.

(2) Breaking strength: the determination was based on JC 646.

(3) Softening coefficient: the determination was carried out on the basis of GB/T1936.2-91.

(4) Compressive strength: the assay was performed based on GB/T19536-2004.

(5) Radiation shielding property: the determination was based on GBZ/T147-2002.

The medium-size ratios of examples 1 to 6 and comparative examples 1 to 2 are summarized in Table 1.

TABLE 1

The evaluation results of examples 1 to 6 and comparative examples 1 to 2 are summarized in Table 2

TABLE 2

As shown in the tables 1-2, the flexural strength of the wall body plate gradually decreases and the radiation shielding performance gradually increases with the increase of the content of the 120-mesh 150-mesh barium sulfate, and the material density of the wall body plate is 2.42-2.49t/m within the range of 400 parts by weight of the wall body plate in 350-mesh³And the porosity of the wall body plate is reduced, and cracks of the wall body plate are reduced. Secondly, as the flexural strength and the compressive strength are reduced, the impact resistance of wall body plates with different contents of 120-mesh barium sulfate and 150-mesh barium sulfate is different, but the flexural strength and the compressive strength are reduced within 15 percent, andno extensive reduction occurred, wherein the material density and radiation shielding were optimized at a content of 400 parts by weight of 120-150 mesh barium sulfate.

The medium slurry ratios of examples 7 to 12 and comparative examples 3 to 4 are summarized in Table 3.

TABLE 3

The evaluation results of examples 7 to 12 and comparative examples 3 to 4 are summarized in Table 4

TABLE 4

As can be seen from tables 3-4, the flexural strength of the wall body plate is gradually reduced and the radiation shielding performance is gradually enhanced with the increase of the content of 20-50 mesh barium sulfate, and the material density of the wall body plate is 2.38-2.49t/m within the range of 350-400 parts by weight³And the porosity of the wall body plate is reduced, and cracks of the wall body plate are reduced. Secondly, as the flexural strength and the compressive strength are reduced, the impact resistance between wall body plates with different 20-50 mesh barium sulfate contents is different, but the flexural strength and the compressive strength are reduced within 16 percent, and the reduction in a large range is not generated, wherein when the 20-50 mesh barium sulfate content is 400 parts by weight, the material density and the radiation shielding property are optimal.

In conclusion, compared with the prior art, the magnesium sulfate material is added with citric acid and trisodium phosphate, so that the prepared board can form a stable crystalline phase structure, the effect of prolonging the service life of the board is achieved, and the softening coefficient is reduced. The porosity of the plate is reduced by adding the barium sulfate with 120-150 meshes, so that the density of the plate is improved, and the compressive strength is increased. And meanwhile, the addition of 20-50 meshes of barium sulfate enables the prepared plate to have better radiation resistance. When 400 parts by weight of 120-150 mesh barium sulfate and 20-50 mesh barium sulfate are added, the density of the wall body plate is optimal, the radiation resistance of the wall body plate is optimal, and the flexural strength and the compressive strength of the wall body plate are not further reduced due to the addition of new 20-50 mesh barium sulfate, so that the wall body plate has better radiation resistance while the compressive strength and the flexural strength are maintained.

Although the illustrative embodiments of the present application have been described above to enable those skilled in the art to understand the present application, the present application is not limited to the scope of the embodiments, and various modifications within the spirit and scope of the present application defined and determined by the appended claims will be apparent to those skilled in the art from this disclosure.

Claims

1. An anti-radiation wall board comprises a substrate, wherein the substrate comprises a first middle material layer, a first non-woven fabric layer, a first gridding cloth layer, a second middle material layer, a second gridding cloth layer, a third middle material layer, a third gridding cloth layer, a fourth middle material layer, a fourth non-woven fabric layer and a fourth gridding cloth layer, wherein,

the first intermediate material layer and the fourth intermediate material layer are made of a first slurry and a fourth slurry, and the first slurry and the fourth slurry comprise the following components:

100 portions of magnesium oxide

25-40 parts of magnesium sulfate

70-110 parts of water

300-450 parts of 120-150 mesh barium sulfate

1-10 parts of citric acid

1-6 parts of trisodium phosphate

1-7 parts of water reducing agent

1-7 parts of a water repellent agent;

the second and third middle material layers are made of second slurry and third slurry, and the second slurry and the third slurry comprise the following components:

100 portions of magnesium oxide

25-45 parts of magnesium sulfate

70-130 parts of water

300 portions of 20-50 meshes of barium sulfate and 450 portions of

1-10 parts of citric acid

1-6 parts of trisodium phosphate

1-7 parts of water reducing agent

1-7 parts of a water repellent agent.

2. The radiation protective wall panel of claim 1 wherein said magnesium oxide is selected from the group consisting of magnesite and light burned magnesite.

3. The radiation-proof wall board according to claim 1, wherein the magnesium oxide is light calcined powder, the content of magnesium oxide in the light calcined powder is more than 80%, the activity is more than 55%, and the ignition loss is 3-9%.

4. The radiation protective wall panel of claim 1 wherein said magnesium sulfate is greater than 99% pure and has a chloride content of less than 0.2% magnesium sulfate.

5. The radiation-proof wall board according to claim 1, wherein the water reducing agent is selected from any one of calcium lignosulfonate, sodium lignosulfonate, magnesium lignosulfonate, tannin, sulfonated melamine resin, sulfonated coumarone resin, sodium polycarboxylate, polyacrylate and aliphatic hydroxymethyl sulfonate high polymer.

6. The radiation-proof wall board according to claim 1, wherein the water repellent agent is selected from any one of ferrous sulfate, zinc sulfate and copper sulfate.

7. The radiation protective wall panel of claim 1, wherein said panel is formed by laminating at least two layers of base plates one on top of the other.

8. A method of making a radiation protective wall panel according to claim 1, comprising the steps of:

preparing solution, preparing medium slurry, manufacturing a substrate, cutting, sanding and compounding.

9. The method of producing a radiation protective wall panel according to claim 8, wherein the solution is divided into a first solution and a second solution, and the first solution is produced by the method comprising:

according to the formula proportion, 30-36 parts by weight of magnesium sulfate, 1-6 parts by weight of citric acid, 2-5 parts by weight of trisodium phosphate, 1-4 parts by weight of water reducing agent and 1-3 parts by weight of water repellent agent are added into 80-100 parts by weight of water, and the mixture is stirred for 2min to obtain solution I.

10. The method for preparing a radiation protective wall plate according to claim 9, wherein the second solution is prepared by the following steps:

according to the formula proportion, 34-40 parts by weight of magnesium sulfate, 1-6 parts by weight of citric acid, 2-5 parts by weight of trisodium phosphate, 1-4 parts by weight of water reducing agent and 1-3 parts by weight of water repellent agent are added into 80-120 parts by weight of water, and the mixture is stirred for 2min to prepare a solution II.

11. The method for manufacturing a radiation protective wall plate according to claim 9, wherein the intermediate slurry is divided into intermediate slurry one, intermediate slurry two, intermediate slurry three and intermediate slurry four, and the method for manufacturing the intermediate slurry one and the intermediate slurry four comprises the following steps:

according to the formula proportion, 400 parts by weight of 350-400 parts by weight of 120-mesh barium sulfate is added into the solution I to be mixed and stirred for 2min, and then 100 parts by weight of magnesium oxide is added to be stirred for 4min to obtain the medium slurry I and the medium slurry IV.

12. The method of producing a radiation protective wall panel according to claim 11, wherein the method of producing the second and third intermediate pastes comprises:

according to the formula proportion, 400 parts by weight of 350-50 mesh barium sulfate is added into the second solution, mixed and stirred for 2min, and then 100 parts by weight of magnesium oxide is added and stirred for 4min to obtain the second and third intermediate slurries.

13. The method of manufacturing a radiation protective wall panel according to claim 8, wherein the step of manufacturing the base plate comprises the steps of:

the method comprises the steps of coating emulsified oil on a template, pouring slurry on the template, then respectively paving non-woven fabric and glass fiber mesh cloth on the slurry to form a first middle material layer, pouring slurry on the first middle material layer, then paving the glass fiber mesh cloth on the slurry to form a second middle material layer, pouring slurry on the second middle material layer, then paving the glass fiber mesh cloth on the slurry to form a third middle material layer, pouring slurry on the third middle material layer, and then respectively paving the non-woven fabric and the glass fiber mesh cloth on the slurry to form a fourth middle material layer.

14. The method of making a radiation protective wall panel of claim 13 wherein said compounding step comprises: and combining the two layers of substrates up and down.