CN115108779B - A kind of waste active shellfish inactivated virus functional decorative wall material and preparation method thereof - Google Patents

Abstract

The invention relates to a functional decorative wall material of waste active shellfish inactivated virus and a preparation method thereof. The decorative wall material comprises the following raw materials in volume percentage content: active shell powder 30%-50%, quartz sand 10% ‑16%, cement 15%‑20%, auxiliary materials 25‑40%; the auxiliary materials include one or more of wollastonite, copper sulfate, silver nitrate, tourmaline, antifungal agent, cellulose mix. The present invention uses physical and chemical treatment of shells, sterilizes and deodorizes with hydrogen peroxide, and then performs physical and chemical reactions with hydrogen peroxide under the pressure and temperature of an autoclave, so that the active shell powder has the function of inactivating bacteria and viruses, and at the same time protects biophysical activity of discarded shells. The decorative wall material prepared by active shell powder can breathe naturally with the change of temperature, automatically adjust the dry humidity of the indoor air, and at the same time release negative oxygen ions to improve the indoor living environment.

Description

A kind of waste active shellfish inactivated virus functional decorative wall material and preparation method thereof

technical field

The invention relates to a functional decorative wall material of waste active shellfish inactivated virus and a preparation method thereof, belonging to the technical field of marine waste utilization.

Background technique

With the improvement of social living standards, the demand for marine food continues to increase, and shellfish are more and more popular. With the increase in demand, the cultivation of shellfish has increased year by year, and a large amount of discarded shells have also been produced. If they are discarded without proper disposal, serious environmental problems will be caused. However, as a kind of biomass, seashell has extremely high utilization value. Shells contain a large number of naturally formed natural gas pores of 2-10 μm, which have good adsorption capacity and have been widely studied and applied in many fields. With the popularization of shell powder technology, the application field has become wider and wider. Shell powder has gradually expanded from the initial beauty industry and food additives to the decoration field. Current research shows that shell powder, which has been specially processed, retains the biophysical activity of shells, and when applied to building materials, it can have special functions, such as absorbing formaldehyde, purifying the air, eliminating odors, antibacterial and antibacterial, fire retardant, antistatic, Adjust air humidity, prevent light pollution and other functions. Therefore, how to make better use of discarded shells and realize the high-value resource utilization of shells is of great significance.

With the strengthening of China's environmental protection in recent years, the research on the resource utilization of discarded shells has aroused the strong interest of scientific researchers. A method for preparing shell powder by internally calcining shells, and using the prepared shell powder for antibacterial and mildew removal, (see: An Xin, Wang Zhihe. Research on Antibacterial and Mildew Removal Performance of High Temperature Calcined Shell Powder. Science and Technology Innovation, 2021(27 ):3-9.). In the literature "Research on antibacterial properties of high-temperature calcined shell powder" also reported a method of preparing shell powder with antibacterial properties by high-temperature section method (Gai Guangqing, Qi Shu et al. Research on antibacterial properties of high-temperature calcined shell powder. Jilin Architecture University Journal, 2022,39(01):38-42.). Chinese patent document CN107572971A discloses a light-weight fireproof ecological net aldehyde cement board. Although the shell powder prepared by the high-temperature calcination method has good properties, the biophysical activity of the shell will be greatly affected after high-temperature calcination, which is not conducive to the retention of biological activity in the shell and affects the deep utilization value of the shell powder.

With the improvement of the overall living standard of the society, the amount of discarded shells is increasing year by year. Discarding them randomly will cause environmental problems. The high-value resource utilization of them is of great significance to the cultivation of shellfish and environmental protection. For this reason, the present invention is proposed.

Contents of the invention

In view of the deficiencies of the prior art, especially the defect that the high-temperature calcination method in the prior art is not conducive to the preservation of shell biological activity, the present invention provides a functional decorative wall material for inactivating viruses of waste active shellfish and a preparation method thereof. The invention uses discarded shells as raw materials, through oxidation, autoclaving and other disposal processes, improves the biological activity of shells, prepares active shell powder, prepares active cement boards through the compounding of cement and quartz sand, etc., and realizes the recycling of waste shells. High value utilization.

The technical scheme of the present invention is as follows:

A functional decorative wall material for waste active shellfish inactivated virus, comprising the following raw materials in volume percentage:

Active shell powder 30%-50%, quartz sand 10%-16%, cement 15%-20%, auxiliary materials 25-40%;

The auxiliary material includes one or a mixture of two or more of wollastonite, copper sulfate, silver nitrate, tourmaline, antifungal agent and cellulose.

According to the present invention, preferably, described active shell powder is prepared as follows:

The shell of discarded marine shellfish is rinsed with water, soaked in hydrogen peroxide, then sterilized by autoclave, dried and ground to obtain the active shell powder.

According to the present invention, preferably, the mass concentration of hydrogen peroxide is 25%-50%;

Preferably, the soaking time in hydrogen peroxide is 5 minutes to 30 minutes.

According to the present invention, preferably, the autoclave pressure of autoclave sterilization is 0.5MPa-1MPa, more preferably 0.6MPa-0.8MPa;

Preferably, the steam temperature for autoclave sterilization is 160°C-200°C;

Preferably, the autoclave sterilization time is 30 minutes to 60 minutes.

According to the present invention, preferably, the drying temperature is 100°C-600°C, more preferably 200°C-500°C.

According to the present invention, preferably, the grinding mesh is 280 mesh to 5000 mesh.

According to the present invention, preferably, the marine shellfish is oyster, mussel, conch, clam or razor clam.

According to the present invention, preferably, the preparation of active shell powder, a kind of preferred embodiment, comprises steps as follows:

The shells of discarded marine shellfish are washed and screened with water, and then transported to the hydrogen peroxide tank for 5-30 minutes, then transported to the autoclave for disinfection and sterilization, autoclaved for 30-60 minutes, and then transported to Drying in a drying furnace, the temperature of the drying furnace is 100°C-600°C, and then transported to the airflow mill to be pulverized and ground into powder to obtain active shell powder;

Hydrogen peroxide mass concentration: 25%-50%, autoclave pressure: 0.6MPa, steam temperature: 160°C-200°C, grinding mesh of shell powder: 280 mesh-5000 mesh.

According to the present invention, the preparation method of the above-mentioned waste active shellfish inactivated virus functional decorative wall material comprises the following steps:

(1) taking material: take active shell powder, quartz sand, cement, auxiliary material by volume percentage as raw material;

(2) mixing material: above-mentioned raw material is mixed, stir;

(3) Molding: After the uniformly stirred material is molded, first normal temperature curing, then steam reaction, the steam pressure is 5-8 MPa;

(4) Drying: drying the product after the steam reaction to obtain the waste active shellfish inactivated virus functional decorative wall material.

According to the present invention, preferably, the room temperature curing time in step (3) is 3-8 hours, and the steam reaction time is 15-25 hours.

According to the present invention, preferably, the drying temperature in step (4) is 100-150° C., and the drying time is 0.5-2 hours.

According to the present invention, the preparation method of the above-mentioned waste active shellfish inactivated virus functional decorative wall material, a preferred embodiment, includes the following steps:

(1) taking material: take active shell powder, quartz sand, cement, auxiliary material by volume percentage as raw material;

(2) mixing material: above-mentioned raw material is mixed, stirred evenly by high-speed stirrer;

(3) Molding: The uniformly stirred material is injected into the storage tank through a high-pressure pump and flows into the felt, and the calcium silicate board equipment process is used to produce the roller pasted. Still carries out steam reaction 18 hours, and steam pressure is 6 MPa;

(4) Drying: the product from the autoclave is sent to a drying room for drying for 1 hour at a temperature of 120° C. to obtain the functional decorative wall material of waste active shellfish inactivated virus.

In the prior art, high-temperature calcination is used to prepare shell powder, which greatly affects the biophysical activity and reduces the utility value of its own functionality. In the present invention, discarded marine shells are used as disposal objects, and the discarded shells are washed with water and air-dried, then transported to a hydrogen peroxide pool for soaking, filtered, transported to an autoclave for autoclaving, and then transported to a drying furnace for drying, and then transported to The jet mill is crushed and ground into powder to obtain active shell powder. The prepared active shell powder is mixed with quartz sand, cement and auxiliary materials, and the decorative wall material is prepared under the condition of flow slurry method and autoclave steam at high temperature, and the preferred decorative wall material can be cement board. Realize the function of inactivating bacteria and viruses of active shell powder and release bionegative electricity, while protecting the biophysical activity of waste shells, and realizing high-value utilization of waste shells.

The beneficial effects of the present invention are as follows:

The present invention uses physical and chemical treatment of shells, sterilizes and deodorizes with hydrogen peroxide, and then performs physical and chemical reactions with hydrogen peroxide under the pressure and temperature of an autoclave, so that the active shell powder has the function of inactivating bacteria and viruses, and at the same time protects biophysical activity of discarded shells. The decorative wall material prepared by active shell powder can breathe naturally with the change of temperature, automatically adjust the dry humidity of the indoor air, and at the same time release negative oxygen ions to improve the indoor living environment.

Detailed ways

The present invention will be further described below in conjunction with specific examples. The content described in the examples is only to facilitate the understanding of the present invention, but not to limit the protection scope of the present invention.

Example 1

Preparation of active shell powder:

After washing and air-drying the shells, soak them in hydrogen peroxide with a mass concentration of 35% for 10 minutes, filter them and place them in an autoclave, and autoclave them at 0.6 MPa for 35 minutes at a steam temperature of 160°C-200°C; after autoclaving Dried at 200°C in a drying oven, then transported to a jet mill for crushing and grinding into 200 mesh active shell powder.

Preparation of activated cement board:

After the active shell powder is obtained, the raw materials are prepared into active cement boards through the slurry flow method and autoclave steam high temperature conditions according to the following volume percentages: active shell powder 35%, quartz sand 12%, cement 16%, and auxiliary materials 37%; Based on the total mass of auxiliary materials as 100%, the auxiliary materials include 65% of wollastonite, 5% of copper sulfate, 2% of silver nitrate, 3% of tourmaline, 5% of antifungal agent and 20% of cellulose.

(1) taking material: take active shell powder, quartz sand, cement, auxiliary material by volume percentage as raw material;

(2) mixing material: above-mentioned raw material is mixed, stirred evenly by high-speed stirrer;

(3) Molding: The uniformly stirred material is injected into the storage tank through a high-pressure pump and flows into the felt, and the calcium silicate board equipment process is used to produce the roller pasted. Still carries out steam reaction 18 hours, and steam pressure is 6 MPa;

(4) drying: the product that the autoclave leaves the kettle is sent to the drying room to dry for 1 hour, and the temperature is 120° C. to obtain the active cement board.

Example 2

As described in Example 1, the difference is:

Preparation of active shell powder:

After the shells are washed and air-dried, they are soaked in 40% hydrogen peroxide for 20 minutes, filtered and placed in an autoclave, and autoclaved at 0.6 MPa for 50 minutes at a steam temperature of 160°C-200°C; Dried at 300°C in a drying furnace, then transported to a jet mill for crushing and grinding into 500 mesh active shell powder.

Preparation of activated cement board:

After the active shell powder is obtained, the raw materials are prepared into active cement boards through the slurry flow method and autoclave steam high temperature conditions according to the following volume percentages: active shell powder 40%, quartz sand 15%, cement 17%, and auxiliary materials 28%.

(1) taking material: take active shell powder, quartz sand, cement, auxiliary material by volume percentage as raw material;

(2) mixing material: above-mentioned raw material is mixed, stirred evenly by high-speed stirrer;

(3) Molding: The uniformly stirred material is injected into the storage tank through a high-pressure pump and flows into the felt, and the calcium silicate board equipment process is used to produce the roller pasted. The kettle was subjected to steam reaction for 24 hours, and the steam pressure was 5 MPa;

(4) drying: the product that the autoclave leaves the kettle is sent to the drying room to dry for 0.5 hour, and the temperature is 150° C. to obtain the active cement board.

Example 3

As described in Example 1, the difference is:

Preparation of active shell powder:

After the shells are washed and air-dried, they are soaked in 45% hydrogen peroxide for 30 minutes, filtered and placed in an autoclave, and autoclaved at 0.6 MPa for 60 minutes at a steam temperature of 160°C-200°C; Dried at 500°C in a drying furnace, then transported to a jet mill for crushing and grinding into 1000 mesh active shell powder.

Preparation of activated cement board:

After the active shell powder is obtained, the raw materials are prepared into active cement boards by the following volume percentages through the slurry flow method and autoclave steam high temperature conditions: active shell powder 45%, quartz sand 10%, cement 15%, and auxiliary materials 30%.

(1) taking material: take active shell powder, quartz sand, cement, auxiliary material by volume percentage as raw material;

(2) mixing material: above-mentioned raw material is mixed, stirred evenly by high-speed stirrer;

(3) Molding: The uniformly stirred material is injected into the storage tank through a high-pressure pump and flows into the felt, and the calcium silicate board equipment process is used to produce the roller pasted. Still carries out steam reaction 16 hours, and steam pressure is 8 MPa;

(4) drying: the product that the autoclave leaves the kettle is sent to the drying room to dry for 1.5 hours, and the temperature is 130° C. to obtain the active cement board.

comparative example

As described in Example 1, the difference is:

Shell powder is processed by high-temperature calcination, and then ground to obtain shell powder.

The calcination temperature is 800° C., and the calcination time is 1 hour.

Then prepare cement board according to the method of Example 1.

Test case

Test the relevant properties of Examples 1-3 and Comparative Examples, as shown in Table 1.

Table 1

Note: The antiviral activity rate refers to the percentage of virus inactivation.

As can be seen from Table 1, the present invention utilizes the cement board anion release amount prepared by active shell powder to be much higher than the comparative examples, and the antiviral (influenza A virus H1N1) activity rate is greater than 99%, while the cement prepared by the shell powder after adopting high-temperature calcining The anti-virus (influenza A virus H1N1) activity rate of the plate is only 51.6%.

Claims (5)

1. The waste active shellfish inactivated virus functional decorative wall material is characterized by comprising the following raw materials in percentage by volume:

30-50% of active shell powder, 10-16% of quartz sand, 15-20% of cement and 25-40% of auxiliary materials;

the auxiliary materials comprise one or more than two of wollastonite, copper sulfate, silver nitrate, tourmaline and cellulose;

the active shell powder is prepared by the following method:

washing the shell of the waste marine shellfish with water, soaking the shell with hydrogen peroxide, sterilizing by autoclaving, drying, and grinding to obtain active shell powder;

the mass concentration of the hydrogen peroxide is 25 to 50 percent, the soaking time of the hydrogen peroxide is 5 to 30 minutes, the autoclaving pressure of the autoclaving sterilization is 0.5 to 1MPa, and the steam temperature of the autoclaving sterilization is 160 to 200 ℃; the time for autoclaving and sterilization is 30-60 minutes; the drying temperature is 100-600 ℃, and the grinding mesh number is 280-5000 meshes; the marine shellfish is oyster, mussel, conch, clam or razor clam.

2. The waste active shellfish deactivated virus functional decorative wall material as claimed in claim 1, wherein the autoclaving pressure for autoclaving, disinfection and sterilization is 0.6MPa-0.8MPa.

3. The preparation method of the waste activated shellfish deactivated virus functional decorative wall material as recited in claim 1, comprising the steps of:

(1) Taking materials, namely weighing active shell powder, quartz sand, cement and auxiliary materials as raw materials according to volume percentage;

(2) Mixing the above materials, and stirring;

(3) Forming, namely forming the uniformly stirred materials, then curing at normal temperature, and then carrying out steam reaction, wherein the steam pressure is 5-8 MPa;

(4) And (4) drying, namely drying the product after the steam reaction to obtain the waste activated shellfish inactivated virus functional decorative wall material.

4. The preparation method of the waste activated shellfish deactivated virus functional decorative wall material as claimed in claim 3, wherein the normal temperature curing time in step (3) is 3-8 hours, and the steam reaction time is 15-25 hours.

5. The preparation method of the waste activated shellfish inactivated virus functional decorative wall material according to claim 3, wherein the drying temperature in the step (4) is 100-150 ℃ and the drying time is 0.5-2 hours.