Production process of extruded polystyrene foam plastic board for heat insulation

Abstract

The invention relates to the technical field of foam plastic board production, in particular to a heat insulation extruded polystyrene foam plastic board production process which comprises the following steps: material selection and storage, extrusion molding equipment cleaning and starting, quantitative feeding equipment operation, plasticizing operation, mixing foaming operation, extrusion molding operation, molding correction operation and cooling storage. According to the equipment, materials can be effectively screened to fully improve the quality of the raw materials, and the preparation process is strictly followed in the preparation process, so that the materials can be effectively plasticized, mixed and foamed, meanwhile, primary molding of a plastic plate is realized through cooperation of extrusion equipment and a traction platform, and the plate can be quickly cut and processed, so that the production efficiency is improved. And the quality of the plastic plate is improved.

Description

Technical Field

[0001] The invention relates to the technical field of foam plastic board production, in particular to a production process of extruded polystyrene foam plastic boards for thermal insulation. Background Art

[0002] XPS extruded board, or extruded polystyrene thermal insulation board, is a rigid foam plastic board made of polystyrene resin as raw material, other raw materials and polymers, which are heated and mixed while injecting catalysts, and then extruded and pressed to form. XPS extruded board has excellent thermal insulation and heat insulation properties, and is widely used in the thermal insulation of building exterior walls. However, the raw materials of general XPS extruded board are sourced from different channels, and due to cost constraints, the use of relatively poor PS polystyrene and modified polystyrene made from recycled waste plastics results in unstable thermal insulation performance and poor combustion performance of the product, which cannot meet the current requirements for high energy-saving and high flame-retardant extruded board products.

[0003] A graphite polystyrene foam extruded board for thermal insulation with publication number CN104744843B injects expanded graphite material into the extruded board production process, not only adding the flame retardant used in ordinary polystyrene board fire prevention, but also making the fire prevention performance stronger, more stable and reliable due to the infrared reflector mixed in the raw materials; it has the advantages of lower thermal conductivity, lower water absorption, better dimensional stability, etc. The raw materials are imported from BASF in Germany, and the latest generation of thermal insulation materials refined through more advanced processing technology, which greatly improves the thermal insulation of the material and is suitable for low-energy buildings with high energy-saving standards.

[0004] The existing technology cannot fully achieve accurate mixing of materials, and cannot effectively mix and foam the materials, which is not conducive to ensuring the quality of the finished product, so improvement is needed. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a production process for extruded polystyrene foam plastic boards for thermal insulation.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] The production process of extruded polystyrene foam plastic board for thermal insulation comprises the following steps:

[0008] S1. Material selection and storage: Select the materials required for the preparation of thermal insulation foam plastic boards, screen and test the materials to ensure the quality of the materials, store the materials separately in storage devices, and effectively control the storage environment of the storage devices to ensure the storage effect and quality of the materials;

[0009] S2. Clean and start the extrusion equipment: clean the extrusion equipment, remove residual impurities and materials, and monitor the extrusion equipment to ensure that the extrusion equipment can operate stably;

[0010] S3. Operation of quantitative feeding equipment: Install corresponding electronically controlled conveying and metering equipment on the discharge pipe end of the storage equipment according to the properties of the stored materials, which can realize automatic start-up, so that the materials are conveyed and the output is measured, so as to achieve the purpose of accurately controlling the addition of materials;

[0011] S4, plasticizing operation: the material is processed by high-temperature plasticizing equipment, and the amount of material entering is accurately controlled. At the same time, the high-temperature plastic equipment is temperature-controlled in sections in sequence, so that the temperature is gradually increased, so that the material is heated to a molten state; and the foaming agent material is added;

[0012] S5, mixing and foaming operation: the foaming agent and the plasticized material are fully mixed through the mixing components in the plasticizing equipment;

[0013] S6, extrusion molding operation: the mixed foamed materials are extruded through the extrusion equipment, and the width and thickness of the formed sheet are controlled by the setting of the traction platform; and the sheet is aged and cooled after being aged by the aging and cooling equipment;

[0014] S7, molding correction operation: correct the molded plastic plate, cut it according to the required specifications, trim and grind the edges of the cut plate, remove the edge burrs, and perform chamfering, hole opening and groove opening as needed;

[0015] S8, cooling and storage: clean the processed plates to remove impurities, and then cool them sufficiently before packaging and storage through packaging equipment.

[0016] Compared with the prior art, the present application can effectively screen materials to fully improve the quality of raw materials, and strictly abide by the preparation process during the preparation process, so as to effectively plasticize, mix and foam the materials. At the same time, the initial forming of the plastic board is achieved through the cooperation of the extrusion equipment and the traction platform, and the board can be quickly split and processed to improve the quality of the plastic board.

[0017] Preferably, the materials required for preparing the thermal insulation foam plastic board in S1 include: polystyrene, nanoparticles, calcium carbonate, pentane foaming agent, flame retardant, plasticizer and smoke suppressant;

[0018] The nanoparticles are at least one of nano-aluminum hydroxide and nano-magnesium hydroxide, and the pentane foaming agent is at least one of n-pentane, isopentane and cyclopentane.

[0019] Furthermore, the plasticizer is phthalate; the flame retardant is a phosphorus-based flame retardant, and the smoke suppressant is a molybdenum compound smoke suppressant. During actual preparation, the above materials are proportioned and the material ratio is clearly defined to effectively improve the quality of the final product. At the same time, it can effectively improve the product's insulation and fireproof capabilities, thereby improving the product's weather resistance and extending the product's service life.

[0020] Preferably, the plasticizing equipment in S4 adopts any one of a high-temperature screw plasticizer and a high-temperature twin-screw plasticizer. Both the high-temperature screw plasticizer and the high-temperature twin-screw plasticizer are provided with a plurality of temperature sections, and the plurality of temperature sections are sequentially set from low to high in temperature, and the temperature of the temperature section can be set as needed.

[0021] Furthermore, in actual production and preparation, a corresponding plasticizer is selected according to needs, and the feeding component of the plasticizer is connected to the electronically controlled conveying and metering equipment at the lower end of multiple storage devices, so that the corresponding materials can be conveyed according to needs, and the materials can be mixed through the plasticizer. In the plasticizer, a 15-meter-long device can be used, and the 15 meters can be divided into four intervals, and the intervals from the feeding component to the discharging component are divided into four areas. The temperature of zone one is set to 150°C, the temperature of zone two is set to 180°C, the temperature of zone three is set to 210°C, the temperature of zone four is set to 195°C, and the temperature of the connector is set to 165°C; after high-temperature plasticization, the material completes melt plasticization and is preliminarily mixed with the foaming agent.

[0022] Preferably, the mixing assembly in S5 uses a high-pressure mixing device, and the pressure range of the high-pressure mixing device is between 25-30 MPa.

[0023] Furthermore, the mixing preparation can be performed under sufficient high pressure so that the materials are fully mixed.

[0024] Preferably, the conditions for extruding the material in S6 are a temperature of 200-240° C. and a screw speed of 10-16 r / min.

[0025] Furthermore, it can fully ensure that the material is in a molten state so that it can be quickly extruded according to product requirements, the material can be formed into corresponding products, and the material required for extrusion molding can be fully met.

[0026] Preferably, the aging operation in S6 is to place the extruded sheet in an oven at 55-60° C. for 8-14 hours.

[0027] Furthermore, the aging operation can allow the additives in the board body to fully react with the corresponding materials, ensuring that the chemical reaction can be fully carried out, so as to improve the performance of the board body.

[0028] Preferably, the packaging equipment adopts a palletizing packaging machine, and the palletizing packaging machine can be arranged according to overlapping of the plates from bottom to top, and the sufficient cooling in S8 adopts a product tumbling device.

[0029] Furthermore, the board can be fully cooled and packed after being stacked to ensure the quality and effect of storage and avoid looseness.

[0030] Preferably, embossing, roughening and peeling operations can also be performed in S7.

[0031] Furthermore, the plates are processed in full accordance with the requirements.

[0032] Preferably, the electrically controlled conveying and metering equipment in S3 may be an auger conveying device and a flow detection device, and the flow detection device may be a liquid flow detection device and a particle flow detection device according to the material properties.

[0033] Furthermore, the material adding operation can be carried out stably and the material control operation can be carried out accurately.

[0034] The beneficial effects of the present invention are:

[0035] 1. The electronically controlled conveying and metering equipment can stably carry out material adding operations and accurately control material operations;

[0036] 2. In actual production and preparation, the corresponding plasticizer is selected according to the needs, and the feeding part of the plasticizer is connected to the electronically controlled conveying and metering equipment at the lower end of multiple storage devices, so as to convey the corresponding materials according to the needs, and the materials can be mixed through the plasticizer. In the plasticizer, a 15-meter-long device can be used, and the 15 meters is divided into four sections, and the sections are divided into four areas from the feeding part to the discharging part. The temperature of the first area is set to 150°C, the temperature of the second area is set to 180°C, the temperature of the third area is set to 210°C, the temperature of the fourth area is set to 195°C, and the temperature of the connector is set to 165°C; after high-temperature plasticization, the material completes melt plasticization and is preliminarily mixed with the foaming agent;

[0037] 3. The mixing component uses high pressure operation to mix and prepare the materials, so that the materials are fully mixed;

[0038] 4. The discharge end of the extrusion equipment is kept at high temperature to ensure that the material is in a molten state so that it can be quickly extruded according to product requirements, so that the material can be formed into corresponding products and can fully meet the materials required for extrusion molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a step diagram of the present invention. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0041] Reference Figure 1 The process for producing extruded polystyrene foam plastic board for thermal insulation comprises the following steps:

[0042] S1. Material selection and storage: Select the materials required for the preparation of thermal insulation foam plastic boards, screen and test the materials to ensure the quality of the materials, store the materials separately in storage devices, and effectively control the storage environment of the storage devices to ensure the storage effect and quality of the materials; the materials required for the preparation of thermal insulation foam plastic boards include: polystyrene, nanoparticles, calcium carbonate, pentane foaming agent, flame retardant, plasticizer and smoke suppressant;

[0043] The nanoparticles adopt at least one of nano aluminum hydroxide and nano magnesium hydroxide, the pentane foaming agent adopts at least one of n-pentane, isopentane and cyclopentane; the plasticizer is phthalate; the flame retardant is a phosphorus flame retardant, and the smoke suppressant is a molybdenum compound smoke suppressant. In actual preparation, the above materials are proportioned and the material proportion is clearly defined to effectively improve the quality of the final product, and at the same time, the product's thermal insulation and fireproof capabilities can be effectively improved to improve the product's weather resistance and extend the product's service life. Through the combination of the above materials, the final product can effectively improve the product's performance, improve the product's flame retardant properties and the amount of smoke during combustion, and effectively improve the product's thermal insulation effect.

[0044] S2. Clean and start the extrusion equipment: Clean the extrusion equipment to remove residual impurities and materials, and monitor the extrusion equipment to ensure that the extrusion equipment can operate stably; fully clean the equipment required for preparation, remove impurities inside, avoid mixing of foreign matter, ensure the quality of raw materials, and contribute to the quality of subsequent product production.

[0045] S3. Operation of quantitative feeding equipment: corresponding electrically controlled conveying and metering equipment is installed on the discharge pipe end of the storage equipment according to the properties of the stored materials, which can realize automatic start-up, so that the materials are conveyed and the output is measured, so as to achieve the purpose of accurately controlling the addition of materials; the electrically controlled conveying and metering equipment can adopt auger conveying equipment and flow detection equipment, and the flow detection equipment can select liquid flow detection equipment and particle flow detection equipment according to the properties of the materials; it can stably carry out material addition operations and accurately control materials at the same time, and can be effectively applied to materials of different properties to ensure the accuracy of measurement, and can also be externally connected to corresponding control equipment, which can deduce the corresponding required material quantity according to the required product quantity, and calculate the required quantity of each material, and realize accurate feeding at the same time to ensure the accuracy of the ratio between materials when feeding.

[0046] S4. Plasticizing operation: The material is processed by high-temperature plasticizing equipment, and the amount of material entering is accurately controlled. At the same time, the high-temperature plastic equipment is temperature-controlled in sections in sequence, so that the temperature is gradually increased so that the material is heated to a molten state; and the foaming agent material is added; the plasticizing equipment adopts any one of a high-temperature screw plasticizer and a high-temperature twin-screw plasticizer. The high-temperature screw plasticizer and the high-temperature twin-screw plasticizer are equipped with multiple temperature sections, and the multiple temperature sections are set in sequence from low to high. The temperature of the temperature section can be set according to the needs; the corresponding plasticizer is selected according to the needs, and the feeding of the plasticizer is controlled by the temperature control device. The components and the electric-controlled conveying and metering equipment at the lower ends of the multiple storage devices are connected so as to convey the corresponding materials as needed, and the materials can be mixed through the plasticizer. The plasticizer can use a 15-meter-long device, and the 15 meters are divided into four sections. The sections are divided into four areas from the feeding component to the discharging component. The temperature of the first zone is set to 150°C, the temperature of the second zone is set to 180°C, the temperature of the third zone is set to 210°C, the temperature of the fourth zone is set to 195°C, and the temperature of the connector is set to 165°C. After high-temperature plasticization, the material completes melt plasticization and is preliminarily mixed with the foaming agent.

[0047] S5. Mixing and foaming operation: The foaming agent and the plasticized material are fully mixed through the mixing component in the plasticizing equipment; the mixing component adopts a high-pressure mixing equipment, and the pressure range of the high-pressure mixing equipment is between 25-30Mpa; the high-pressure mixing equipment can better mix the materials and help to make the materials react fully.

[0048] S6, extrusion molding operation: the mixed foamed materials are extruded through the extrusion equipment, and the width and thickness of the molded board are controlled by the setting of the traction platform; and the board is aged and cooled after the aging and cooling equipment; the conditions for material extrusion are a temperature of 200-240°C and a screw speed of 10-16r / min; the aging operation is to place the extruded board in an oven at 55-60°C for 8-14h; it can fully ensure that the material is in a molten state, so that it can be quickly extruded according to product requirements, the material can be formed into corresponding products, and it can fully meet the materials required for extrusion molding; the aging operation can make the additives in the board body and the corresponding materials fully react, ensuring that the chemical reaction can be fully carried out, so as to improve the performance of the board body.

[0049] S7, molding correction operation: Correct the formed plastic sheet, cut it according to the required specifications, trim and grind the edges of the cut sheet, remove the burrs on the edges, and chamfer, open holes and grooves as needed; embossing, roughening and peeling operations can be performed; it can be processed in full accordance with the needs of the final product so that it can be used quickly later.

[0050] S8, cooling and storage: clean the processed plates to remove impurities, and then cool them sufficiently before packaging and storage through packaging equipment; the packaging equipment adopts a palletizing and packaging machine, which can overlap the plates from bottom to top. The sufficient cooling in S8 adopts product tumbling equipment.

[0051] In the present invention, material selection and storage: selecting materials required for preparing the thermal insulation foam plastic board, screening and testing the materials to ensure the quality of the materials, and storing the materials in storage devices respectively, and effectively controlling the storage environment of the storage devices to ensure the storage effect and quality of the materials;

[0052] Clean the extrusion equipment, remove residual impurities and materials, and monitor the extrusion equipment to ensure that the extrusion equipment can operate stably; install corresponding electronically controlled conveying and metering equipment on the discharge pipe end of the storage equipment according to the properties of the stored materials, which can realize automatic start-up, so that the materials are conveyed and the output is measured, so as to achieve the purpose of accurately controlling the addition of materials;

[0053] The material is processed by high-temperature plasticizing equipment, and the amount of material entering is accurately controlled. At the same time, the high-temperature plasticizing equipment is temperature-controlled in sections so that the temperature is gradually increased so that the material is heated to a molten state; and the foaming agent material is added; the foaming agent and the plasticized material are fully mixed through the mixing component in the plasticizing equipment;

[0054] The mixed foamed materials are extruded through the extrusion equipment, and the width and thickness of the formed sheet are controlled by the setting of the traction platform; the sheet is aged and then cooled through the aging and cooling equipment; the formed plastic sheet is corrected, cut according to the required specifications, and the edges of the cut sheet are trimmed and polished to remove the edge burrs, and chamfering, hole opening and slotting are performed as needed;

[0055] The processed plates are cleaned to remove impurities, and then fully cooled and packaged for storage using packaging equipment.

[0056] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A process for producing extruded polystyrene foam plastics board for thermal insulation, characterized in that: The following steps are involved: S1. Material selection and storage: Select the materials required for the preparation of thermal insulation foam plastic boards, screen and test the materials to ensure the quality of the materials, store the materials separately in storage devices, and effectively control the storage environment of the storage devices to ensure the storage effect and quality of the materials; S2. Clean and start the extrusion equipment: clean the extrusion equipment, remove residual impurities and materials, and monitor the extrusion equipment to ensure that the extrusion equipment can operate stably; S3. Operation of quantitative feeding equipment: Install corresponding electronically controlled conveying and metering equipment on the discharge pipe end of the storage equipment according to the properties of the stored materials, which can realize automatic start-up, so that the materials are conveyed and the output is measured, so as to achieve the purpose of accurately controlling the addition of materials; S4, plasticizing operation: the material is processed by high-temperature plasticizing equipment, and the amount of material entering is accurately controlled. At the same time, the high-temperature plastic equipment is temperature-controlled in sections in sequence, so that the temperature is gradually increased, so that the material is heated to a molten state; and the foaming agent material is added; S5, mixing and foaming operation: the foaming agent and the plasticized material are fully mixed through the mixing components in the plasticizing equipment; S6, extrusion molding operation: the mixed foamed materials are extruded through the extrusion equipment, and the width and thickness of the formed sheet are controlled by the setting of the traction platform; and the sheet is aged and cooled after being aged by the aging and cooling equipment; S7, molding correction operation: correct the molded plastic plate, cut it according to the required specifications, trim and grind the edges of the cut plate, remove the edge burrs, and perform chamfering, hole opening and groove opening as needed; S8, cooling and storage: clean the processed plates to remove impurities, and then cool them sufficiently before packaging and storage through packaging equipment.

2. The process for producing an extruded polystyrene foam board for thermal insulation according to claim 1, characterized in that: The materials required for preparing the thermal insulation foam plastic board in S1 include: polystyrene, nanoparticles, calcium carbonate, pentane foaming agent, flame retardant, plasticizer and smoke suppressant; The nanoparticles are at least one of nano-aluminum hydroxide and nano-magnesium hydroxide, and the pentane foaming agent is at least one of n-pentane, isopentane and cyclopentane.

3. The process for producing an extruded polystyrene foam board for thermal insulation according to claim 1, characterized in that: The plasticizing equipment in S4 adopts any one of a high-temperature screw plasticizer and a high-temperature twin-screw plasticizer. The high-temperature screw plasticizer and the high-temperature twin-screw plasticizer are both provided with a plurality of temperature sections, and the plurality of temperature sections are sequentially set from low to high in temperature, and the temperature of the temperature section can be set according to needs.

4. The process for producing an extruded polystyrene foam board for thermal insulation according to claim 1, characterized in that: The mixing assembly in S5 uses a high-pressure mixing device, and the pressure range of the high-pressure mixing device is between 25-30Mpa.

5. The process for producing an extruded polystyrene foam board for thermal insulation according to claim 1, characterized in that: The conditions for extruding the material in S6 are a temperature of 200-240° C. and a screw speed of 10-16 r / min.

6. The process for producing an extruded polystyrene foam board for thermal insulation according to claim 1, characterized in that: The aging process in S6 is to place the extruded sheet in an oven at 55-60° C. for 8-14 hours.

7. The process for producing an extruded polystyrene foam board for thermal insulation according to claim 1, characterized in that: The packaging equipment adopts a stacking and packaging machine, and the stacking and packaging machine can be set according to overlapping the plates from bottom to top. The sufficient cooling in S8 adopts a product rolling device.

8. The process for producing an extruded polystyrene foam board for thermal insulation according to claim 1, characterized in that: In the step S7, embossing, roughening and peeling operations can also be performed.

9. The process for producing an extruded polystyrene foam board for thermal insulation according to claim 1, characterized in that: The electrically controlled conveying and metering equipment in S3 may be an auger conveying device and a flow detection device. The flow detection device may be a liquid flow detection device or a particle flow detection device according to the material properties.

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