CN110655738A

CN110655738A - Active bamboo charcoal environment-friendly board and preparation process thereof

Info

Publication number: CN110655738A
Application number: CN201910996735.7A
Authority: CN
Inventors: 黄坤华; 陈永禄; 陈丁桂; 范有发
Original assignee: Fujian Carbon Du Technology Co Ltd; Fujian University of Technology
Current assignee: Fujian Carbon Du Technology Co Ltd; Fujian University of Technology
Priority date: 2019-10-19
Filing date: 2019-10-19
Publication date: 2020-01-07

Abstract

The invention discloses an active bamboo charcoal environment-friendly board and a preparation process thereof, wherein the active bamboo charcoal board comprises, by mass, 46 ~ 52 parts of polyvinyl chloride, 30 ~ 35 parts of calcium powder, 1.2 ~ 3.3.3 parts of calcium zinc stabilizer LG612M, 2.5 ~ 3.6.6 parts of ACR PVC foaming regulator, 0.1 ~ 0.5.5 parts of external lubricant PE wax, 0.2 ~ 0.8.8 parts of internal lubricant stearic acid, 0.1 ~ 0.4.4 parts of AC yellow foaming agent, 0.2 ~ 0.7.7 parts of NC white foaming agent, 10 ~ 15.5.5 parts of active bamboo charcoal powder, 0.5 ~ 2.2.2 parts of photocatalyst, 0.1 ~ 2 parts of silane coupling agent, and the board is prepared by batching, mixing, extruding, cooling and sizing processes, traction cutting processes and health preserving processes.

Description

Active bamboo charcoal environment-friendly board and preparation process thereof

Technical Field

The invention relates to an environment-friendly artificial board, in particular to an active bamboo charcoal environment-friendly board and a preparation process thereof.

Background

With the development of the real estate industry, the environmental protection problem of the decoration materials is always a hot point for people to pursue healthy home environment. The board is the main material used in the house decoration process, and the base material is various, and the style is various, and wherein, artificial board occupies important market share more. In order to standardize the market of the artificial boards, the national standard of formaldehyde release limit in artificial boards of indoor decoration and finishing materials and products thereof (GB18580-2017) is officially implemented in 5 months and 1 day in 2018. The environmental protection pain point of the new national standard direct impact industry draws most attention to the requirement of limited formaldehyde release amount and generates huge impact on the current board market pattern.

The bamboo charcoal board is an attractive artificial board in the current decoration market, is a hard PVC board added with bamboo charcoal powder and other functional components, and is a board prepared by uniformly mixing bamboo charcoal and other matrix materials. The bamboo charcoal board is obviously different from the traditional hard PVC board in material and function, and is also different from a board with bamboo charcoal embedded and sealed in a multilayer PVC board in the form of regular charcoal blocks (boards) or charcoal bags.

The bamboo charcoal board utilizes honeycomb-shaped micropore structure in bamboo charcoal to generate special adsorption capacity, has the functions of moisture absorption, filtration, purification, disinfection, heat storage, moisture preservation and the like, and effectively adsorbs harmful gas released by decoration materials such as formaldehyde and the like. In fact, the pores of the common bamboo charcoal mainly have macropores with the diameter of about 200nm, and the diameters of harmful gas molecules are obviously smaller, such as 0.44nm of formaldehyde, 0.48nm of benzene, 0.414nm of ammonia, 0.58nm of toluene, 0.60nm of xylene and 0.324nm of methane. The common bamboo charcoal has an undesirable function of adsorbing and purifying harmful gases because the pores of the common bamboo charcoal are too large to be beneficial to adsorbing gas molecules and are easy to desorb even if the common bamboo charcoal is adsorbed. In addition, the common bamboo charcoal has loose texture and low hardness, and micropores are easy to block and deform under the action of external force. However, the activated bamboo charcoal is mainly composed of micropores, and the pore diameters are divided into three types: macropores (not less than 50nm) account for about 10-30 parts of the total pore volume, micropores (not more than 2nm) account for about 60-90 parts of the total pore volume, mesopores are also called transition pores (phi is not less than 2nm and not more than 50nm) account for about 5-7 parts of the total pore volume, and the average pore diameter is about 1.5 nm. The more developed pore structure and larger specific surface area, the stronger adsorption function of the bamboo charcoal is, so that the activated bamboo charcoal has stronger adsorbability than common bamboo charcoal.

In the adsorption of harmful substances, activated carbon plays a major role. The photocatalyst is added into the active carbon, and the photocatalyst nano particles can be effectively dispersed and exist in the pores of the active bamboo charcoal. Under the action of photocatalysis, the particles can directly react with harmful organic matters such as formaldehyde and the like adsorbed in pores of the bamboo charcoal, and are oxidized and decomposed into CO₂And H₂And O, realizing continuous adsorption and degradation of formaldehyde, and forming a virtuous cycle effect. In the prior art, the photocatalyst is often directly coated on the surface of the board, which not only has the direct disadvantages of large dosage, complex preparation process, high production cost and the like, but also inhibits the strong adsorption effect of the active bamboo charcoal powder and is not beneficial to realizing the effective decomposition of harmful substances adsorbed in the pores of the active bamboo charcoal. In addition, the prior art cannot comprehensively apply the photocatalyst and the activated carbon to the board through a simple process, so that the prior art lacks a bamboo charcoal board which can truly and efficiently adsorb and effectively decompose harmful gases, has high comprehensive performance and is easy to prepare in batches.

Disclosure of Invention

Aiming at the problem that the prior art is difficult to meet the production requirements of a bamboo charcoal board which can really and efficiently adsorb harmful gases, has high static bending strength and high wear resistance, the invention provides the bamboo charcoal board which takes activated bamboo charcoal powder as a raw material, really and efficiently adsorbs and effectively decomposes the harmful gases, has high comprehensive performance and is easy to prepare in batches. The specific contents are as follows: an active bamboo charcoal environment-friendly board is composed of the following materials in parts by mass:

polyvinyl chloride: 46 to 52 portions of

Calcium powder: 30 to 35 portions of

Calcium zinc stabilizer LG 612M: 1.2 to 3.3 parts

ACR PVC foaming regulator: 2.5 to 3.6 portions

External lubricant PE wax: 0.1 to 0.5 portion

Internal lubricant stearic acid: 0.2 to 0.8 portion

AC yellow foaming agent: 0.1 to 0.4 portion

NC white foaming agent: 0.2 to 0.7 portion

Activated bamboo charcoal powder: 10 to 15.5 portions

Photocatalyst agent: 0.5 to 2.2 portions

Silane coupling agent: 0.1 to 2 portions

The ACR PVC foaming regulator is DFL-300 and T-218 which are used in a ratio of 2: 1.

Further, the calcium powder is heavy calcium carbonate powder.

Further, the photocatalyst is titanium dioxide (TiO) with nanometer size grade₂) Zinc oxide (ZnO), tin dioxide (SnO)₂) Zirconium dioxide (ZrO)₂) 1-2 kinds of oxide powder.

A preparation process of an active bamboo charcoal environment-friendly board comprises the following steps:

(1) batching and mixing process

Step one, weighing polyvinyl chloride according to the mass parts: 46-52 parts of calcium powder: 30-35 parts of calcium zinc stabilizer LG 612M: 1.2-3.3 parts of ACR PVC foaming regulator: 2.5-3.6 parts of external lubricant PE wax: 0.1-0.5 parts of internal lubricant stearic acid: 0.2-0.8 part of an AC yellow foaming agent: 0.1-0.4 part, NC white foaming agent: 0.2-0.7 parts of active bamboo charcoal powder: 10-15.5 parts of photocatalyst: 0.5-2.2 parts of a silane coupling agent: 0.1-2 parts of drying the solid materials;

step two, adding polyvinyl chloride into a high-speed hot mixer, stirring and heating to 60 ℃;

adding a calcium-zinc stabilizer, heating to 90 ℃, sequentially adding an internal lubricant PE wax, calcium powder, active bamboo charcoal powder, a foaming agent and a PVC foaming regulator, and continuously stirring;

adding an external lubricant, a photocatalyst agent and a silane coupling agent, wherein the total input amount of the materials is not more than 70% of the effective volume of the hot mixing pot, stirring at a high speed, heating to 110-125 ℃, stirring at the temperature for 5-10 min, and then entering a cold mixing process;

and fifthly, discharging the materials into a cold mixer filled with cooling water at a low rotating speed, stirring for 5-10 min, and discharging at 35-45 ℃.

(2) Extrusion process

Temperature control: the heating system adopts a 5-stage independent heating and step-by-step cooling mode from the feeding end to the discharging end, and the temperature control precision is 0.5 ℃; the temperature control range of each area is as follows: a feeding zone 178-180 ℃, a compression zone 173-177 ℃, a melting zone 169-172 ℃, a metering zone 164-168 ℃ and a neck mold zone 160-163 ℃;

the rotating speed of the screw is 15-24 r/min, and the extrusion speed is 2.2-4 m/min;

(3) cooling and shaping process

Adopting a four-stage cooling and shaping process, wherein the vacuum degree of a 1-stage template is 0.020-0.1 MPa, the temperature of each-stage shaping template is 10-20 ℃, uniformly and slowly cooling is carried out, the roughness of the inner surface of the template is more than Ra0.8 mu m, the foam body shrinks under different formula conditions, and a certain shrinkage is reserved in the inner cavity of the template;

(4) traction cutting process

The traction force is 28-40 kN, the traction speed is continuously adjustable within the range of 0.5-5 m/min, and cutting is carried out after cooling and shaping;

(5) health preserving and preparation

And horizontally stacking and storing the activated bamboo charcoal plates at room temperature for 12-24 h, and completely culturing to finish the preparation.

Further, the calcium powder is heavy calcium carbonate powder.

The invention has the following beneficial effects:

1. the active bamboo charcoal powder is used as a main functional raw material, the calcium powder is used as a framework, the PVC is used as a filling material, the static bending strength, the rigidity, the heat resistance and the flame retardance of the board are improved, the cost is reduced, and the industrialized batch production is realized.

2. By adding the silane coupling agent, the photocatalyst can be effectively dispersed in the activated bamboo charcoal in the production process of the bamboo charcoal board, the uniformity of the product is improved, and meanwhile, the high-efficiency adsorption of harmful gases and the strong hardness of the board are realized.

Drawings

Fig. 1 is a sectional view of the side of the forming die of the present invention.

Fig. 2 is a top view of the forming die of the present invention.

Fig. 3 is a side view of the forming mold of the present invention.

Fig. 4 is a schematic structural diagram of the plate width compression block of the forming die of the invention.

FIG. 5 is a schematic view of the compression molding in the thickness direction of the plate of the molding die of the present invention.

FIG. 6 is a schematic view of the compression molding in the width direction of the molding die of the present invention.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below.

Example 1

An active bamboo charcoal environment-friendly board is composed of the following materials in parts by mass:

polyvinyl chloride: 46 portions of

Calcium powder: 35 portions of

Calcium zinc stabilizer LG 612M: 1.2 parts of

ACR PVC foaming regulator: 2.5 parts of

External lubricant PE wax: 0.1 part

Internal lubricant stearic acid: 0.2 part

AC yellow foaming agent: 0.1 part

NC white foaming agent: 0.7 portion of

Activated bamboo charcoal powder: 15.5 parts of

Photocatalyst agent: 2.2 parts of

Silane coupling agent: 2 portions of

According to the formula, the active bamboo charcoal powder is added as a main functional raw material, the calcium powder is used as a plate structure framework, the PVC is used as a filling material, the problem that the active bamboo charcoal is insufficient in structural looseness strength as a bamboo charcoal plate is solved, and meanwhile, the photocatalyst is uniformly dispersed in the active bamboo charcoal substrate, so that the harmful gas is really and efficiently adsorbed.

Further, the calcium powder is heavy calcium carbonate powder.

(1) batching and mixing process

Step one, weighing polyvinyl chloride according to the mass parts: 46 parts of calcium powder: 35 parts, calcium zinc stabilizer LG 612M: 1.2 parts of ACR PVC foaming regulator: 2.5 parts, external lubricant PE wax: 0.1 part of internal lubricant stearic acid: 0.2 part, AC yellow foaming agent: 0.1 part, NC white foaming agent: 0.7 part, active bamboo charcoal powder: 15.5 parts, photocatalyst: 2.2 parts, silane coupling agent: 2, drying the solid material;

adding an external lubricant, a photocatalyst and a silane coupling agent, wherein the total input amount of the materials is not more than 70% of the effective volume of the hot mixing pot, stirring at a high speed, heating to 110 ℃, stirring at the temperature for 10min, and then entering a cold mixing process;

and fifthly, discharging the materials into a cold mixer filled with cooling water at a low rotating speed, stirring for 5min, and discharging at 35 ℃.

(2) Extrusion process

The extrusion process adopts a two-way compression extrusion bamboo charcoal board forming die, and the following process operations are carried out by combining the forming die:

the screw rotating speed is 15r/min, and the extrusion speed is 2.2 m/min;

the invention realizes the uniform distribution of the activated carbon in the bamboo charcoal board and the application of the activated bamboo charcoal in the bamboo charcoal board by a bidirectional extrusion process on the basis of a structure taking calcium as a framework and PVC as a filler.

(3) Cooling and shaping process

(4) traction cutting process

The traction force is 28-40 kN, the traction speed is continuously adjustable within the range of 0.5-5 m/min, and cutting is carried out after cooling and shaping; the traction speed is adjusted according to the actual machine traction, and the traction is in direct proportion to the traction speed, such as 28kN traction, 0.5m/min traction speed, and 5m/min traction speed when the traction is 40 kN.

(5) Health preserving and preparation

And horizontally stacking and storing the activated bamboo charcoal plates for 24 hours at room temperature, and completely culturing to finish the preparation.

Further, the calcium powder is heavy calcium carbonate powder.

In the common plate production process equipment, a plate extrusion die needs to be configured in the plate extrusion process, and due to the fact that the extrusion die in the prior art is simple in structure and the extrusion pressure of a melting material in a die cavity is low, the material flow speed is not stable enough, the density of the melting material is not uniform, the pressure and the flow speed of the material flow are not stable, the extruded material flow is not stable, the stress on the front end and the rear end of the bamboo charcoal board discharging is not uniform, and the stability of the extrusion process of the bamboo charcoal board is difficult to control in the prior art.

In the embodiment, the forming die for the bamboo charcoal board through bidirectional compression extrusion is adopted, so that the structural stability of the activated bamboo charcoal is further ensured, and the batch production of the bamboo charcoal board prepared by the formula is realized.

Please refer to fig. 1 to 6, which illustrate a two-way compression extrusion bamboo charcoal board forming die: the bamboo charcoal plate extrusion die comprises an upper machine head body 1, a lower machine head body 2 and sealing plates 3 arranged at two ends, wherein a flow channel for material flow is arranged between the upper machine head body 1 and the lower machine head body 2, the upper machine head body 1 and the lower machine head body 2 are matched through the sealing plates 3, a connecting plate 4 capable of being inserted into a feed pipe is arranged on the right side surface of the matched die, and the connecting plate 4 is matched with the flow channel, so that a worker can insert the feed pipe into the connecting plate 4, extrude bamboo charcoal plate raw materials into the upper machine head body 1 and the lower machine head body 2, then introduce the bamboo charcoal plate raw materials into the flow channel, uniformly distribute the bamboo charcoal plate raw materials in; an upper die lip 5 is arranged on the upper machine head body 1, a lower die lip 6 is arranged on the lower machine head body 2, and a die lip adjusting bolt 7 for adjusting the upper die lip 5 to be opened and closed is arranged on the upper machine head body 1, so that a worker can open and close the upper die lip 5 and the lower die lip 6 through the spiral die lip adjusting bolt 7 to limit the width of the bamboo charcoal board; the upper machine head body 1 and the lower machine head body 2 are provided with plate width compression blocks 8 used for compressing the width of the plate at the front end and the rear end, the plate width compression blocks 8 are arranged in the flow channels of the upper die lip 5 and the lower die lip 6, so that the plate width compression blocks 8 can perform a certain amount of compression effect on the width direction of the plate, and the thickness of the plate is compressed through the flow channels, so that the pressure of the material in the inner cavity of the die is greatly increased, the material density is more uniform, the extrusion speed is more stable, and the deformation of the plate after molding is smaller. The plate width compression block 8 is embedded and fixed on the inner side wall of the sealing plate.

The board width compression block 8 can be used for replacing board width compression blocks of different types according to different formulas and different board thickness requirements of the bamboo charcoal board so as to meet the extrusion molding requirements of different bamboo charcoal boards.

Bidirectional compression parameter setting range: gradually applying compression deformation in the thickness direction of the plate along the flow channel, wherein the compression ratio ranges from 1.5 to 3; the plate width compression block applies compression deformation along the width direction of the plate, and the compression ratio range is 1.1-1.5. Preferably, the compression ratio in the thickness direction is 1.5 or 2, and the compression ratio in the width direction is 1.1 or 1.3, but not limited thereto.

The board width compression block 8 can be also provided with a heating temperature control device, so that the heating temperature control device can heat materials during compression, and the heating temperature control device can be not arranged and does not need to be used as much as required.

Referring to fig. 1, the upper machine head body 1 and the lower machine head body 2 are connected and fixed by a fastening bolt 9.

As shown in fig. 1, a damper 10 for adjusting the size of the flow channel is disposed in the upper head body 1, and a damper adjusting bolt 11 for driving the damper 10 to move so as to open and close the flow channel is disposed on the upper head body 1, so that a worker can control the damper 10 to move up and down through the damper adjusting bolt 11, and the damper 10 can open and close the flow channel.

With continued reference to fig. 1, 5 and 6, the flow channel is composed of a first flow channel 12 for compression, a second flow channel 13 for accumulation, and a third flow channel 14 for limiting the thickness of the discharged material. The discharge port flow channel structure consists of a first flow channel 12, a second flow channel 13 and a third flow channel 14 in the plate thickness direction, the third flow channel 14 preliminarily compresses the molten material, and then the material enters the area of the second flow channel 13 to be accumulated again, because the first flow channel 12 is a flat seam-shaped outlet, the size of the first flow channel 12 is much smaller than that of the second flow channel 13, the pressure of a large amount of material accumulated in the area of the second flow channel 13 is increased, the pressure tends to be uniform and stable, and the compression effect of the plate thickness direction A, B on the material is realized. When the molten material flows through the second flow channel 13 and the first flow channel 12, the molten material is also subjected to the inclined surface effect of the plate width compression block from the plate width direction, and is subjected to the pressure in the plate width C, D direction to form the compression effect in the plate width direction, so that the pressure of the material melt accumulated in the second flow channel 13 is improved, the density and the pressure stability of the molten material are improved, and the molten material extruded from the first flow channel 12 is more uniform and stable.

As shown in fig. 1, the cross section of the second flow channel 13 is a connection of an inclined plane and an elliptical plane, which are asymmetric with respect to the center line of the first flow channel 12. The symmetrical inclined planes can be connected with the cylindrical surface, so that the molten material is convenient to gather and flows smoothly.

The working principle of the forming die of the invention is as follows: under the working condition, the bamboo charcoal board material melted and extruded by the extruder plasticizing system firstly enters a central main flow channel formed by an upper machine head body and a lower machine head body, and is expanded along the width direction of a clothes hanger type flow channel to form a flat material flow with the maximum width, and then the flow speed of the material flow is properly adjusted through a flow channel of a damper part, so that a stable forward flow state is kept; then the material enters a partial flow channel of a compression area in the thickness direction of the extrusion die to perform compression action on the material in the thickness direction, so that the pressure of the material flow is improved, the flow rate of the material is further improved, the material continuously flows forwards to enter a flow channel of a material accumulation area, and simultaneously is subjected to the action of compression blocks in the width direction of the plate arranged at two sides of the flow channel area, so that the material accumulated in the area is simultaneously subjected to the compression action in the width direction of the plate and the flow extrusion action of the material flow in the thickness direction of the plate, the material is subjected to bidirectional compression action in the area, the density of the material is improved, the pressure is more stable, and finally the material flow is uniformly extruded from a flat seam flow channel formed by an upper die lip and a lower die lip under the constant pressure and flow rate state to form.

In the embodiment, the bamboo charcoal board forming die is formed by bidirectional compression extrusion, so that the smoothness of the appearance and the dimensional stability of the activated bamboo charcoal board are further guaranteed, and the batch production of the activated bamboo charcoal board with the formula is realized.

Example 2

polyvinyl chloride: 49 parts of

Calcium powder: 33 portions of

Calcium zinc stabilizer LG 612M: 2.2 parts of

ACR PVC foaming regulator: 3.1 parts of

External lubricant PE wax: 0.35 part

Internal lubricant stearic acid: 0.5 portion

AC yellow foaming agent: 0.25 part

NC white foaming agent: 0.45 part

Activated bamboo charcoal powder: 12.5 portions

Photocatalyst agent: 1.3 parts of

Silane coupling agent: 1 part of

Further, the calcium powder is heavy calcium carbonate powder.

(1) batching and mixing process

Step one, weighing polyvinyl chloride in parts by mass: 49 parts, calcium powder: 33 parts, calcium zinc stabilizer LG 612M: 2.2 parts of ACR PVC foaming regulator: 3.1 parts of external lubricant PE wax: 0.35 part, internal lubricant stearic acid: 0.5 part, AC yellow foaming agent: 0.25 part, NC white foaming agent: 0.45 part, activated bamboo charcoal powder: 12.5 parts, photocatalyst: 1.3 parts, silane coupling agent: 1 part, drying the solid material;

adding an external lubricant, a photocatalyst agent and a silane coupling agent, wherein the total input amount of the materials is not more than 70% of the effective volume of the hot mixing pot, stirring at a high speed and heating to 118 ℃, stirring at the temperature for 8min, and then entering a cold mixing process;

and fifthly, discharging the materials into a cold mixer filled with cooling water at a low rotating speed, stirring for 8min, and discharging at 40 ℃.

(2) Extrusion process

the rotating speed of the screw is 20r/min, and the extrusion speed is 3.1 m/min;

(3) cooling and shaping process

(4) traction cutting process

(5) health preserving and preparation

And horizontally stacking and storing the activated bamboo charcoal plates for 18h at room temperature, and completely culturing to finish the preparation.

Further, the calcium powder is heavy calcium carbonate powder.

Further, the two-way compression extrusion bamboo charcoal board forming die refers to example 1

Example 3

polyvinyl chloride: 52 portions of

Calcium powder: 30 portions of

Calcium zinc stabilizer LG 612M: 3.3 parts of

ACR PVC foaming regulator: 3.6 parts of

External lubricant PE wax: 0.5 portion

Internal lubricant stearic acid: 0.8 portion of

AC yellow foaming agent: 0.4 portion of

NC white foaming agent: 0.2 part

Activated bamboo charcoal powder: 10 portions of

Photocatalyst agent: 0.5 portion

Silane coupling agent: 0.1 part

Further, the calcium powder is heavy calcium carbonate powder.

(1) batching and mixing process

Step one, weighing polyvinyl chloride in parts by mass: 52 parts of calcium powder: 30 parts, calcium zinc stabilizer LG 612M: 3.3 parts of ACR PVC foaming regulator: 3.6 parts of external lubricant PE wax: 0.5 part of internal lubricant stearic acid: 0.8 part, AC yellow foaming agent: 0.4 part, NC white foaming agent: 0.2 part, active bamboo charcoal powder: 10 parts, photocatalyst: 0.5 part, silane coupling agent: 0.1 part, and drying the solid material;

adding an external lubricant, a photocatalyst and a silane coupling agent, wherein the total input amount of the materials does not exceed 70% of the effective volume of the hot mixing pot, stirring at a high speed, heating to 125 ℃, stirring at the temperature for 5min, and then entering a cold mixing process;

and fifthly, discharging the materials into a cold mixer filled with cooling water at a low rotating speed, stirring for 10min, and discharging at 45 ℃.

(2) Extrusion process

the screw rotating speed is 24r/min, and the extrusion speed is 4 m/min;

(3) cooling and shaping process

(4) traction cutting process

(5) health preserving and preparation

And horizontally stacking and storing the activated bamboo charcoal plates at room temperature for 12h, and completely culturing to finish the preparation.

Further, the calcium powder is heavy calcium carbonate powder.

Further, the molding die for the bi-directional compression extrusion bamboo charcoal board is shown in example 1.

The sheet materials according to examples 1, 2 and 3 of the present application were tested for moisture content, static bending strength, elastic modulus, 24h water absorption thickness expansion rate and plate surface screw holding force, and the results are as follows:

from the above results, it can be seen that the sheet materials prepared in the examples of the present invention are excellent in the moisture content, static bending strength, elastic modulus, 24h water absorption thickness expansion rate, and sheet surface screw holding force performance index.

To further validate the formulations and processes of the present invention, applicants conducted single factor variable tests for the control group according to example 2, respectively. Test 1 with no polyvinyl chloride, i.e. PVC, test 2 with 20 parts PVC, test 3 with no ground limestone, test 4 with 15 parts ground limestone, test 5 with no activated bamboo charcoal, test 6 with 5 parts activated bamboo charcoal, test 7 with 25 parts activated bamboo charcoal; wherein, the reduced PVC is added with heavy calcium carbonate according to the equal mass, the reduced heavy calcium carbonate is added with PVC according to the equal mass, and the reduced or increased active bamboo charcoal is added with heavy calcium carbonate according to the equal mass. The thickness of each test group trial-produced plate is 20mm, and the relevant performance is tested and obtained as follows:

it can be seen from the above table that based on the optimized proportion of the formula of the invention, the various properties of the board reach the optimal proportion, and neither the addition or reduction of PVC, calcium powder or active bamboo charcoal powder therein can reach the performance optimization effect of the invention.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection of the claims.

Claims

1. An active bamboo charcoal environment-friendly board is characterized by comprising the following materials in parts by mass:

polyvinyl chloride: 46 to 52 portions of

Calcium powder: 30 to 35 portions of

Calcium zinc stabilizer LG 612M: 1.2 to 3.3 parts

ACR PVC foaming regulator: 2.5 to 3.6 portions

External lubricant PE wax: 0.1 to 0.5 portion

Internal lubricant stearic acid: 0.2 to 0.8 portion

AC yellow foaming agent: 0.1 to 0.4 portion

NC white foaming agent: 0.2 to 0.7 portion

Activated bamboo charcoal powder: 10 to 15.5 portions

Photocatalyst agent: 0.5 to 2.2 portions

Silane coupling agent: 0.1 to 2 portions

2. The activated bamboo charcoal environment-friendly board as claimed in claim 1, wherein: the calcium powder is heavy calcium carbonate powder.

3. The activated bamboo charcoal environment-friendly board as claimed in claim 1The method is characterized in that: the photocatalyst is nano-sized titanium dioxide TiO₂Zinc oxide ZnO, tin dioxide SnO₂ZrO in zirconium dioxide₂1-2 kinds of oxide powder.

4. The preparation process of the active bamboo charcoal environment-friendly board is characterized by comprising the following steps:

(1) batching and mixing process

Step one, weighing polyvinyl chloride according to the mass percentage: 46-52 parts of calcium powder: 30-35 parts of calcium zinc stabilizer LG 612M: 1.2-3.3 parts of ACR PVC foaming regulator: 2.5-3.6 parts of external lubricant PE wax: 0.1-0.5 parts of internal lubricant stearic acid: 0.2-0.8 part of an AC yellow foaming agent: 0.1-0.4 part, NC white foaming agent: 0.2-0.7 parts of active bamboo charcoal powder: 10-15.5 parts of photocatalyst: 0.5-2.2 parts of a silane coupling agent: 0.1-2 parts of drying the solid materials;

discharging the materials into a cold mixer filled with cooling water at a low rotating speed, stirring for 5-10 min, and discharging at 35-45 ℃;

(2) extrusion process

(3) cooling and shaping process

(4) traction cutting process

(5) health preserving and preparation

5. The preparation process of the activated bamboo charcoal environment-friendly board as claimed in claim 4, wherein the preparation process comprises the following steps: the calcium powder is heavy calcium carbonate powder.

6. The preparation process of the activated bamboo charcoal environment-friendly board as claimed in claim 4, wherein the preparation process comprises the following steps: the photocatalyst is nano-sized titanium dioxide TiO₂Zinc oxide ZnO, tin dioxide SnO₂ZrO in zirconium dioxide₂1-2 kinds of oxide powder.