Production method of wooden fireproof silence door and steel fireproof silence door

Abstract

The invention belongs to the technical field of fireproof door production, and particularly discloses a production method of a wooden fireproof silence door and a steel fireproof silence door, which comprises the following steps: preparing a base material; the method comprises the following steps: cutting a base material into battens for processing door keels, laying novel environment-friendly fireproof cotton in gaps of the keels, spraying water-based smokeless fireproof glue on two sides, dry-hanging the melamine veneer base material on the keels, and sealing edges; the A2-level fireproof base material is adopted as a door core, the door core is matched with a keel, novel environment-friendly fireproof cotton and smokeless fireproof glue, and a steel shell is fixed outside the door core for forming. According to the production method of the wood fireproof silent door and the steel fireproof silent door, the produced fireproof door not only can reach the fireproof performance and smoke toxicity standard specified by the new national standard, but also has excellent high-pressure water cannon impact resistance and sound insulation effect, meanwhile, the weight of the door body is effectively controlled, and the overweight risk is avoided.

Description

Technical Field

[0001] This invention relates to the field of fire door manufacturing technology, and in particular to a method for producing wooden fireproof and soundproof doors and steel fireproof and soundproof doors. Background Technology

[0002] With the continuous upgrading of fire safety standards, the new national standard has put forward more stringent requirements for fire doors in terms of fire resistance, impact resistance, smoke toxicity, and free chloride ion content. Traditional fire door production has many drawbacks: Traditional production methods under the old national standard system are no longer able to meet the requirements of the new national standard, resulting in low product testing pass rates. Traditional cement-based and magnesium oxide-based fire doors cannot withstand the impact of high-pressure water cannons and are easily damaged in fire rescue scenarios, losing their fireproof function. Due to the inherent properties of wood materials, carbon-based flame-retardant boards produce excessive smoke and toxicity when burning, and their combustion performance also fails to meet the requirements of the new national standard.

[0003] The new national standard clearly stipulates that the content of free chloride ions shall not exceed 3%, which leads to the risk of elimination of traditional magnesium oxychloride series base materials. Furthermore, the requirements for products such as moisture absorption and efflorescence, as well as the use of anti-rust nails, have been raised to the highest level, making it difficult for traditional production processes to adapt.

[0004] Therefore, there is an urgent need for a fire door production method that can meet the requirements of the new national standard and has excellent fire resistance, resistance to high-pressure water cannon impact, low smoke toxicity, lightweight, and quiet operation. Summary of the Invention

[0005] The purpose of this invention is to provide a production method for wooden fireproof and soundproof doors and steel fireproof and soundproof doors. By optimizing the base material formula and production process and innovating the door structure design, the produced fireproof doors not only meet the fire resistance and smoke toxicity standards stipulated in the new national standards, but also have excellent resistance to high-pressure water cannon impact and sound insulation effect, while effectively controlling the weight of the door and avoiding the risk of overweight.

[0006] To achieve the above objectives, the present invention provides a method for producing wooden fireproof and soundproof doors and steel fireproof and soundproof doors, comprising the following steps: Step 1: After high-speed mixing of lightly calcined magnesium oxide powder, wood fiber, and mineral powder, magnesium sulfate solution containing additives is added and mixed again. After being laid out, it is formed by cold pressing or hot pressing, and then cured, sanded, and hot-pressed melamine finishing to obtain the substrate. Step 2: Cut the substrate into strips to process the door frame. Lay new environmentally friendly fireproof cotton in the gaps of the frame. After spraying water-based smokeless fireproof adhesive on both sides, dry-hang the melamine-faced substrate on the frame and seal the edges. Use fireproof B1B substrate to make the door frame, and ensure that all edges and joints are stepped to prevent fire and smoke leakage. Step 3, Steel Fireproof and Silent Door Production: A2-grade fireproof base material with a thickness of 3.5mm is used as the door core, combined with keel, new environmentally friendly fireproof cotton and smokeless fireproof adhesive, and the edge is fixed with nails or screws, and the outer steel shell is formed.

[0007] Preferably, in the base material, the mass ratio of fire-retardant B1B grade magnesium oxide to wood fiber is 1:0.5-0.9, and the mass ratio of magnesium oxide to magnesium sulfate is 0.65-0.75:1; the mass ratio of fire-retardant A2 grade magnesium oxide, mineral powder, and wood fiber is 1:1:0.4-0.8, and the mass ratio of magnesium oxide to magnesium sulfate is 0.65-0.85:1, with additives accounting for 3%-8% of the mass of magnesium oxide.

[0008] Preferably, in step 1, the activity of the lightly calcined magnesium oxide powder is 63, and the magnesium content is not less than 85%; the moisture content of the wood fiber is not higher than 10%, and the fiber length is 3-5 mm; the mineral powder is one or a mixture of several of glass microspheres, floating fly ash, quartz sand, heavy calcium carbonate powder, and barium sulfate powder.

[0009] Preferably, in step 1, the additive is a mixture of soluble sulfate, soluble phosphate, siloxane coupling agent, polyvinyl alcohol, and cellulose ether.

[0010] Preferably, in step 1, the cold pressing adopts the stacked plate locking mold cold pressing mode, the pressure is 1500-2200 tons, the curing chamber temperature is 50-80℃, the mold is removed after curing for 4 hours, the curing chamber temperature is 20-60℃ and the air humidity is 55-90% for 3 days, and then the natural curing is carried out for 3 days, and the moisture content is baked to 4-10%.

[0011] Preferably, in step 1, the hot pressing adopts a multi-layer hot pressing mode, with a temperature of 80-130℃, a pressure of 1200-1500 tons, and a pressing time of 10-35 minutes per mold for a 10 cm thick hot pressing plate.

[0012] Preferably, in step 1, when hot-pressing the melamine finish, the upper plate temperature is 180-220℃, the lower plate temperature is 150-180℃, the press pressure is 2400-3200 tons and 16-20 MPa, the pressing time is 40-55 seconds, and after pressing, it is pressed with a heavy object until it is completely cooled.

[0013] Preferably, in step 2, the door frame is made of 30mm thick sheet material cut into 30mm pieces. 30-40mm square strips or 18mm thick boards cut into 18mm pieces 30-40mm strips, keel spacing 10-20mm, and connection nodes are fixed with smokeless fireproof adhesive and high-temperature resistant screws.

[0014] Preferably, in step 2, the original thickness of the new environmentally friendly fireproof cotton is 5cm, and it is compressed to 3cm; the spraying amount of water-based smokeless fireproof adhesive is 2kg / m² for Class A fire doors and 1kg / m² for Class B fire doors.

[0015] Preferably, in step 2, the door frame uses 18mm or 30mm fireproof B1B base material, paired with 3.5mm decorative panels, the door frame lines are made of the same material, the edges are finished with a stepped treatment, and the hardware is fireproof door hardware.

[0016] The advantages and beneficial effects of the above-mentioned production method for wooden fireproof and soundproof doors and steel fireproof and soundproof doors are as follows: 1. The fire doors produced by this invention fully meet the requirements of the new national standards. The fire resistance level can reach A2 and B1B, the smoke toxicity level can reach AQ2 and ZAQ1, the free chloride ion content meets the standards, there is no problem of moisture absorption and efflorescence, and the resistance to high-pressure water cannon impact is excellent.

[0017] 2. This invention adopts a hollow structure design and lightweight materials, which effectively solves the problem of excessive weight of traditional fire doors. At the same time, the combination of new environmentally friendly fireproof cotton and fireproof decorative panels makes the sound insulation value of the door reach more than 45dB, with outstanding sound insulation effect.

[0018] 3. This invention unifies the core production process and key materials for wooden and steel fire doors, achieving standardized production of Class A, B, and C fire doors. It boasts high production efficiency, stable product quality, and strong consistency in production inspection. The addition of composite additives to the base material formula enhances the material's comprehensive properties such as water resistance, aging resistance, and oxygen blocking, extending the product's service life. Environmentally friendly materials such as smokeless fireproof adhesive and environmentally friendly fireproof cotton are used in the production process, resulting in no harmful gas emissions and meeting green production requirements.

[0019] The technical solution of the present invention will be further described in detail below through embodiments. Detailed Implementation

[0020] The technical solution of the present invention will be further described below through embodiments.

[0021] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0022] The following examples are not intended to limit the invention, but are only for illustration. Unless otherwise specified, the experimental methods used in the following examples are generally performed under conventional conditions. Unless otherwise specified, the materials and reagents used in the following examples are commercially available.

[0023] Example 1 A method for producing a wooden fireproof and soundproof door and a steel fireproof and soundproof door includes the following steps: Step 1: Lightly calcined magnesium oxide powder, wood fiber, and mineral powder are mixed at high speed, then magnesium sulfate solution containing additives is added and mixed again. After being laid out, it is formed by cold pressing or hot pressing, and then cured, sanded, and hot-pressed melamine finishing to obtain the substrate.

[0024] Step 2: Cut the substrate into strips to form the door frame. Lay new environmentally friendly fireproof cotton in the gaps of the frame. After spraying water-based smokeless fireproof adhesive on both sides, dry-hang the melamine-faced substrate on the frame and seal the edges. Use fireproof B1B substrate to make the door frame, and ensure that all edges and joints are stepped to prevent fire and smoke leakage.

[0025] Step 3, Steel Fireproof and Silent Door Production: A2-grade fireproof base material with a thickness of 3.5mm is used as the door core, combined with keel, new environmentally friendly fireproof cotton and smokeless fireproof adhesive, and the edge is fixed with nails or screws, and the outer steel shell is formed.

[0026] In the base material, the mass ratio of fire-retardant B1B grade magnesium oxide to wood fiber is 1:0.5-0.9, and the mass ratio of magnesium oxide to magnesium sulfate is 0.65-0.75:1; for fire-retardant A2 grade magnesium oxide, the mass ratio of mineral powder to wood fiber is 1:1:0.4-0.8, and the mass ratio of magnesium oxide to magnesium sulfate is 0.65-0.85:1. Additives account for 3%-8% of the mass of magnesium oxide.

[0027] In step 1, the activity of the lightly calcined magnesium oxide powder is 63, and the magnesium content is not less than 85%; the moisture content of the wood fiber is not higher than 10%, and the fiber length is 3-5 mm; the mineral powder is one or a mixture of several of the following: glass microspheres, floating fly ash, quartz sand, heavy calcium carbonate powder, and barium sulfate powder.

[0028] In step 1, the additive is a mixture of soluble sulfate, soluble phosphate, siloxane coupling agent, polyvinyl alcohol, and cellulose ether.

[0029] In step 1, the cold pressing adopts the stacked plate locking cold pressing mode, with a pressure of 1500-2200 tons and a curing chamber temperature of 50-80℃. After curing for 4 hours, the mold is removed and cured in the curing chamber at a temperature of 20-60℃ and an air humidity of 55-90% for 3 days, followed by natural curing for another 3 days, and then baked until the moisture content is 4-10%.

[0030] In step 1, the hot pressing adopts a multi-layer hot pressing mode. The temperature of the 10 cm thick hot pressing plate is 80-130℃, the pressure is 1200-1500 tons, and the pressing time is 10-35 minutes per mold.

[0031] In step 1, when hot-pressing the melamine finish, the upper plate temperature is 180-220℃, the lower plate temperature is 150-180℃, the press pressure is 2400-3200 tons and 16-20 MPa, the pressing time is 40-55 seconds, and after pressing, it is pressed with a heavy object until it is completely cooled.

[0032] In step 2, the door frame is made of 30mm thick sheet material cut into 30mm pieces. 30-40mm square strips or 18mm thick boards cut into 18mm pieces 30-40mm strips, keel spacing 10-20mm, and connection nodes are fixed with smokeless fireproof adhesive and high-temperature resistant screws.

[0033] In step 2, the original thickness of the new environmentally friendly fireproof cotton is 5cm, which is reduced to 3cm after compression; the amount of water-based smokeless fireproof adhesive sprayed is 2kg / m² for Class A fire doors and 1kg / m² for Class B fire doors.

[0034] In step 2, the door frame uses 18mm or 30mm fire-resistant B1B base material, paired with 3.5mm decorative panels. The door frame lines are made of the same material, and the edges are finished with a stepped treatment. The hardware is fire-resistant door hardware.

[0035] The additives fill the voids in the substrate, preventing oxygen from entering and thus achieving flame retardancy and fire prevention. The substrate is formed using cold or hot pressing, with high-pressure compression reducing internal porosity and creating a dense material structure. This dense structure reduces the contact area between oxygen and combustible components (such as wood fibers) within the substrate, slowing down the combustion reaction rate, consistent with the core concept of "oxygen deprivation and flame retardancy." No halogenated compounds are added to the substrate, and free chloride ions do not exceed acceptable limits.

[0036] Abandoning traditional cement-based production methods, we have returned to a wood-based carbon system, optimizing the formula to enhance the material's resistance to high-pressure water cannon impacts. Targeting the characteristics of wood-based carbon materials, we have adjusted the raw material ratios to achieve fire resistance ratings of B1B and A2, and smoke toxicity ratings of AQ2 and ZAQ1, fully meeting the new national standards for fire resistance and smoke toxicity. Breaking through the limitations of the old national standard's fire door core design, we have adopted a hollow structure design, combined with a wooden frame, specially made fire-resistant and sound-insulating decorative panels, and new environmentally friendly fireproof cotton, effectively avoiding excessive door weight while ensuring fire resistance. We have standardized the core production processes and key materials for both wooden and steel fire doors, achieving standardized production of Class A, B, and C fire doors and ensuring consistent product quality.

[0037] Example 2 A method for producing a wooden fireproof and soundproof door and a steel fireproof and soundproof door includes the following steps: Step 1: Combine lightly calcined magnesium oxide powder (approximately 63% active, with a magnesium content of no less than 85%) with wood fiber (moisture content no more than 10%, fiber length 3 mm) and mineral powder (glass microspheres, quartz sand, heavy calcium carbonate powder, barium sulfate powder) to adjust the calorific value. Use a high-speed vertical mixer at no less than 600 rpm for two minutes. Add a magnesium sulfate solution with additives (soluble sulfate, soluble phosphate, siloxane coupling agent, polyvinyl alcohol, cellulose ether) and a magnesium content of 22-30 degrees and stir again for 5 minutes to ensure uniformity. Then, perform a second uniformity stirring. Feed the mixture into a paving machine (using a multi-head snow-type paving machine). Pave the mixture onto the mat at a compression ratio of 3-5:1 according to the required thickness. After pre-compression, run the machine to the press using a stacked plate locking mold cold pressing mode. The stacked plate locking mold cold pressing ensures the compression... Pressed under 1600 tons of pressure, the mold is immediately locked and the board enters the curing chamber at 55℃. After four hours, the board is demolded to become a blank. Once the pressing time is up, the board is immediately demolded and placed in a curing chamber for three days (curing chamber temperature is 35℃, air humidity is between 65%, and constant temperature and humidity is maintained). After leaving the curing chamber, the board is naturally cured for another three days, baked until the moisture content is 5%, and sanded to the required thickness. Special attention must be paid to the precise thickness and flatness of the sanding. The thickness error should not exceed 10-15 microns. Impurities and pits on the board surface are not allowed. For hot-pressed melamine-faced (single-sided pressing), the hot-pressing plate temperature is 185℃ for the upper plate and 160℃ for the lower plate (with minor adjustments). The press is 2500 tons, the pressure is 17 MPa, and the pressing time is 45 seconds (with minor adjustments). After pressing, the board must be pressed with heavy objects until it is completely cooled before it can be used.

[0038] Step 2, Door Structure: Cut 30mm thick sheet metal into 30mm pieces. 30mm square strips or 18mm thick boards cut into 18mm pieces Using 30mm thick steel strips and stainless steel nails at 15mm spacing, the door keel is first processed to ensure a thickness of 30-40mm. All nail connections are then secured with smokeless fireproof adhesive and high-temperature resistant screws. A new type of environmentally friendly fireproof cotton, initially 5cm thick but compressed to 3cm, is laid in the gaps between the keels. Water-based smokeless fireproof adhesive is then sprayed onto both sides of the cotton. This application aims to make the fireproof cotton resistant to high-pressure water cannons and to provide insulation to prevent excessive back temperature. For Class A fire doors, the adhesive is 2kg / m², for Class B fire doors 1kg / m², and for Class C, a light application is sufficient. Melamine-faced panels, 6-8mm thick, are then dry-hung onto the prepared door keel using smokeless fireproof adhesive or fireproof dry-hanging hardware. The edges are sealed to obtain the finished door. The finished door is then sanded, trimmed, and cold-pressed for later use. Use 18mm or 30mm fire-resistant B1B base material for the door frame, plus 3.5mm decorative panels. The door frame moldings also need to be processed with our material. Ensure that all edges and finishes are stepped to prevent fire and smoke leakage. Hardware must be fire-resistant door-specific.

[0039] In the base material, the mass ratio of fire-retardant B1B grade magnesium oxide to wood fiber is 1:0.6, and the mass ratio of magnesium oxide to magnesium sulfate is 0.7:1.

[0040] Example 3 A method for producing a wooden fireproof and soundproof door and a steel fireproof and soundproof door includes the following steps: Step 1: Combine lightly calcined magnesium oxide powder (approximately 63% activity, with a magnesium content of no less than 85%) with wood fiber (moisture content no more than 10%, fiber length 4 mm) and mineral powder (floating fly ash, quartz sand, heavy calcium carbonate powder, barium sulfate powder) to adjust the calorific value. Use a high-speed vertical mixer at no less than 600 rpm for two minutes. Add a magnesium sulfate solution with additives (soluble sulfates, soluble phosphates, siloxane coupling agents, polyvinyl alcohol, cellulose ethers) and a magnesium content of 22-30 degrees Celsius. Stir again for 5 minutes to ensure uniformity. After a second uniformity stirring, feed the mixture into a paving machine (using a multi-head snow-type paving machine). Pave onto the mat according to the required thickness at a compression ratio of 3-5:1. After pre-compacting, proceed to the press, using a multi-layer hot pressing mode. The multi-layer hot pressing uses a 10 cm thick hot pressing layer. The pressing board temperature is 100℃, the pressure is 1300 tons, and the pressing time is 20 minutes per mold (adjustment). Using about 30 layers is the most economical. Immediately after the pressing time, demold and place in a curing room for three days (curing room temperature is 30℃, air humidity is 60%, and constant temperature and humidity is maintained). After leaving the curing room, allow it to cure naturally for another three days, bake until the moisture content is 8%, and sand to the required thickness. Special attention should be paid to the precise thickness and flatness of the sanding. The precise thickness error should not exceed 10-15 microns. Impurities and pits on the board surface are not allowed. For hot-pressed melamine-faced (single-sided pressing), the hot-pressing board temperature is 200℃ for the upper board and 160℃ for the lower board (fine adjustment). The press is 2700 tons, the pressure is 16 MPa, and the pressing time is 50 seconds (fine adjustment). After pressing, the heavy object must be pressed until it is completely cooled before use.

[0041] Step 2, Door Structure: Cut 30mm thick sheet metal into 30mm pieces. 40mm square strips or 18mm thick boards cut into 18mm pieces Using 40mm thick steel strips and stainless steel nails at 20mm spacing, the door frame is first fabricated to ensure a thickness of 30-40mm. All nail connections are then secured with smokeless fireproof adhesive and high-temperature resistant screws. A new type of environmentally friendly fireproof cotton, initially 5cm thick but compressed to 3cm, is laid in the gaps between the nails. Water-based smokeless fireproof adhesive is then sprayed onto both sides of the cotton. This application aims to make the fireproof cotton resistant to high-pressure water cannons and to provide insulation to prevent excessive back temperature. The standard application rate is 2kg / m² for Class A fire doors, 1kg / m² for Class B, and a light application is sufficient for Class C. Melamine-faced panels, 6-8mm thick, are then dry-hung onto the prepared door frame using smokeless fireproof adhesive or fireproof dry-hanging hardware. The edges are sealed to obtain the finished door. The edges are then sanded, trimmed, and cold-pressed for later use. Use 18mm or 30mm fire-resistant B1B base material for the door frame, plus 3.5mm decorative panels. The door frame moldings also need to be processed with our material. Ensure that all edges and finishes are stepped to prevent fire and smoke leakage. Hardware must be fire-resistant door-specific.

[0042] In the base material, the mass ratio of fire-retardant B1B grade magnesium oxide to wood fiber is 1:0.7, and the mass ratio of magnesium oxide to magnesium sulfate is 0.68:1.

[0043] Example 4 A method for producing a wooden fireproof and soundproof door and a steel fireproof and soundproof door includes the following steps: Step 1 is the same as Step 1 in Example 2.

[0044] Step 2: Steel fire doors do not require finishing. They use 3.5mm thick fire-resistant A2 grade base material. The new environmentally friendly fireproof cotton for the keel and the smokeless fireproof adhesive are the same as those used for wooden fire doors. The 3.5mm board is fixed with smokeless fireproof adhesive nails or screws to form the steel fire door core. Various shapes of steel fire door shells are then added to form the outer shell.

[0045] Fire-retardant A2 grade magnesium oxide: mineral powder: wood fiber mass ratio is 1:1:0.6, magnesium oxide: magnesium sulfate mass ratio is 0.8:1, and additives account for 6% of the mass of magnesium oxide.

[0046] Example 5 A method for producing a wooden fireproof and soundproof door and a steel fireproof and soundproof door includes the following steps: Step 1 is the same as Step 1 in Example 3.

[0047] Step 2: Steel fire doors do not require finishing. They use 3.5mm thick fire-resistant A2 grade base material. The new environmentally friendly fireproof cotton for the keel and the smokeless fireproof adhesive are the same as those used for wooden fire doors. The 3.5mm board is fixed with smokeless fireproof adhesive nails or screws to form the steel fire door core. Various shapes of steel fire door shells are then added to form the outer shell.

[0048] Fire-retardant A2 grade magnesium oxide: mineral powder: wood fiber mass ratio is 1:1:0.5, magnesium oxide: magnesium sulfate mass ratio is 0.7:1, and additives account for 4% of the mass of magnesium oxide.

[0049] The wooden and steel fire doors produced by the method of this invention can all meet the Class A, B, and C fire resistance standards for both types of fire doors, with consistent production and inspection results, and the sound insulation value of the doors can reach 45dB.

[0050] The performance of the substrate produced by the method of the present invention was tested, and the test results are shown in Table 1.

[0051] Table 1 Test Results

[0052] Therefore, the present invention adopts the above-mentioned production method of wooden fireproof and soundproof door and steel fireproof and soundproof door. By optimizing the base material formula and production process and innovating the door structure design, the produced fireproof door can not only meet the fire resistance and smoke toxicity standards stipulated in the new national standard, but also has excellent resistance to high-pressure water cannon impact and sound insulation effect, while effectively controlling the weight of the door and avoiding the risk of overweight.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A method for producing a wooden fireproof and soundproof door and a steel fireproof and soundproof door, characterized in that, Includes the following steps: Step 1: After high-speed mixing of lightly calcined magnesium oxide powder, wood fiber, and mineral powder, magnesium sulfate solution containing additives is added and mixed again. After being laid out, it is formed by cold pressing or hot pressing, and then cured, sanded, and hot-pressed melamine finishing to obtain the substrate. Step 2: Cut the substrate into strips to process the door frame. Lay new environmentally friendly fireproof cotton in the gaps of the frame. After spraying water-based smokeless fireproof adhesive on both sides, dry-hang the melamine-faced substrate on the frame and seal the edges. Use fireproof B1B substrate to make the door frame, and ensure that all edges and joints are stepped to prevent fire and smoke leakage. Step 3, Steel Fireproof and Silent Door Production: A2-grade fireproof base material with a thickness of 3.5mm is used as the door core, combined with keel, new environmentally friendly fireproof cotton and smokeless fireproof adhesive, and the edge is fixed with nails or screws, and the outer steel shell is formed.

2. The production method of a wooden fireproof and soundproof door and a steel fireproof and soundproof door according to claim 1, characterized in that: In the base material, the mass ratio of fire-retardant B1B grade magnesium oxide to wood fiber is 1:0.5-0.9, and the mass ratio of magnesium oxide to magnesium sulfate is 0.65-0.75:1; for fire-retardant A2 grade magnesium oxide, the mass ratio of mineral powder to wood fiber is 1:1:0.4-0.8, and the mass ratio of magnesium oxide to magnesium sulfate is 0.65-0.85:

1. Additives account for 3%-8% of the mass of magnesium oxide.

3. The production method of a wooden fireproof and soundproof door and a steel fireproof and soundproof door according to claim 1, characterized in that: In step 1, the activity of the lightly calcined magnesium oxide powder is 63, and the magnesium content is not less than 85%; the moisture content of the wood fiber is not higher than 10%, and the fiber length is 3-5 mm; the mineral powder is one or a mixture of several of the following: glass microspheres, floating fly ash, quartz sand, heavy calcium carbonate powder, and barium sulfate powder.

4. The production method of a wooden fireproof and soundproof door and a steel fireproof and soundproof door according to claim 1, characterized in that: In step 1, the additive is a mixture of soluble sulfate, soluble phosphate, siloxane coupling agent, polyvinyl alcohol, and cellulose ether.

5. The production method of a wooden fireproof and soundproof door and a steel fireproof and soundproof door according to claim 1, characterized in that: In step 1, the cold pressing adopts the stacked plate locking mold cold pressing mode, with a pressure of 1500-2200 tons and a curing chamber temperature of 50-80℃. After curing for 4 hours, the mold is removed and cured in the curing chamber at a temperature of 20-60℃ and an air humidity of 55-90% for 3 days, followed by natural curing for another 3 days, and then baked until the moisture content is 4-10%.

6. The production method of a wooden fireproof and soundproof door and a steel fireproof and soundproof door according to claim 1, characterized in that: In step 1, the hot pressing adopts a multi-layer hot pressing mode. The temperature of the 10 cm thick hot pressing plate is 80-130℃, the pressure is 1200-1500 tons, and the pressing time is 10-35 minutes per mold.

7. The production method of a wooden fireproof and soundproof door and a steel fireproof and soundproof door according to claim 1, characterized in that: In step 1, when hot-pressing the melamine finish, the upper plate temperature is 180-220℃, the lower plate temperature is 150-180℃, the press pressure is 2400-3200 tons and 16-20 MPa, the pressing time is 40-55 seconds, and after pressing, it is pressed with a heavy object until it is completely cooled.

8. The production method of a wooden fireproof and soundproof door and a steel fireproof and soundproof door according to claim 1, characterized in that: In step 2, the door frame is made of 30mm thick sheet material cut into 30mm pieces. 30-40mm square strips or 18mm thick boards cut into 18mm pieces 30-40mm strips, keel spacing 10-20mm, and connection nodes are fixed with smokeless fireproof adhesive and high-temperature resistant screws.

9. The production method of a wooden fireproof and soundproof door and a steel fireproof and soundproof door according to claim 1, characterized in that: In step 2, the original thickness of the new environmentally friendly fireproof cotton is 5cm, which is reduced to 3cm after compression; the amount of water-based smokeless fireproof adhesive sprayed is 2kg / m² for Class A fire doors and 1kg / m² for Class B fire doors.

10. A method for producing a wooden fireproof and soundproof door and a steel fireproof and soundproof door according to claim 1, characterized in that: In step 2, the door frame uses 18mm or 30mm fire-resistant B1B base material, paired with 3.5mm decorative panels. The door frame lines are made of the same material, and the edges are finished with a stepped treatment. The hardware is fire-resistant door hardware.

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