CN111234402B - Rigid foam composite plastic micro-bubble plate and manufacturing method thereof - Google Patents
Rigid foam composite plastic micro-bubble plate and manufacturing method thereof Download PDFInfo
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/122—Hydrogen, oxygen, CO2, nitrogen or noble gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
- C08J9/0071—Nanosized fillers, i.e. having at least one dimension below 100 nanometers
- C08J9/008—Nanoparticles
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
- C08J9/143—Halogen containing compounds
- C08J9/144—Halogen containing compounds containing carbon, halogen and hydrogen only
- C08J9/146—Halogen containing compounds containing carbon, halogen and hydrogen only only fluorine as halogen atoms
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/06—CO2, N2 or noble gases
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
- C08J2203/142—Halogenated saturated hydrocarbons, e.g. H3C-CF3
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- C08J2205/00—Foams characterised by their properties
- C08J2205/04—Foams characterised by their properties characterised by the foam pores
- C08J2205/044—Micropores, i.e. average diameter being between 0,1 micrometer and 0,1 millimeter
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- C08J2205/00—Foams characterised by their properties
- C08J2205/04—Foams characterised by their properties characterised by the foam pores
- C08J2205/052—Closed cells, i.e. more than 50% of the pores are closed
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- C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2325/02—Homopolymers or copolymers of hydrocarbons
- C08J2325/04—Homopolymers or copolymers of styrene
- C08J2325/06—Polystyrene
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
Abstract
The invention discloses a rigid foam composite plastic micro-bubble plate which comprises the following components in parts by weight: 85.0-93.0 parts of polystyrene, 1.0 part of EVOH, 0.02-0.3 part of monoglyceride, 2.0-7.0 parts of graphene particles, 1.0-3.0 parts of nano montmorillonite, 1.0-1.5 parts of phosphate, 5.0-7.0 parts of flame retardant and 8-15 parts of foaming agent. The invention also discloses a manufacturing method of the rigid foam composite plastic micro-bubble plate. The tensile and compressive properties of the micro-bubble plate can be effectively improved, the foaming compactness of the formed product is higher on the premise of ensuring environmental protection, the heat preservation property and the fireproof and flame-retardant property can be ensured simultaneously, and the production process meets the requirements of energy conservation and emission reduction.
Description
Technical Field
The application relates to a rigid foam composite plastic micro-bubble plate for heat insulation, in particular to a heat insulation rigid foam composite plastic micro-bubble plate for external thermal insulation of an external wall and a manufacturing method thereof.
Background
The building energy-saving standard is continuously improved, the energy efficiency is improved, the engineering and the building industrialization are gradually implemented, for cold regions, the design standard of residential building energy saving of 75% is comprehensively implemented, the thickness of the heat-insulating layer can be greatly increased, and the thickness is almost doubled. The thickness of the heat insulation layer of the external heat insulation system of the common EPS plate needs to be more than 120mm, the thickness of the XPS plate needs to be more than 90mm, and for a passive green building with ultralow energy consumption (energy saving of 92%), the thickness of the EPS plate can reach 240mm-300mm, so that the falling of external wall heat insulation and the fire hazard are aggravated.
The total amount of combustible materials in the unit area of the external thermal insulation is increased by more than one time, the risk of flame propagation and spread during fire is aggravated, external thermal insulation fire accidents frequently occur in recent years, and great loss is caused to lives and properties of people.
The cost is constantly improved because of the increase of the thickness of the heat-insulating material, particularly, for the sandwich heat-insulating wall plate for the assembly type building, the thickness of the heat-insulating layer between the inner leaf wall and the outer leaf wall is increased by nearly one time, the structural performance is reduced, and the length and the number of the connecting pieces are increased, so that the manufacturing cost is greatly improved.
On the basis of ensuring the energy-saving effect of the building, how to improve the safety of the structure of the heat-insulating system and improve the fire-proof safety of the heat-insulating system becomes a major social problem which is urgently needed to be solved at present.
Disclosure of Invention
In order to solve the above problems, a rigid foam composite plastic micro-bubble plate and a method for manufacturing the same are provided.
The application provides a rigid foam composite plastic micro-bubble plate which comprises the following components in parts by weight:
85.0-93.0 parts of polystyrene, 1.0 part of EVOH, 0.02-0.3 part of monoglyceride, 2.0-7.0 parts of graphene particles, 1.0-3.0 parts of nano montmorillonite, 1.0-1.5 parts of phosphate, 5.0-7.0 parts of flame retardant and 8-15 parts of foaming agent.
As a preferred technical scheme of the rigid foam composite plastic micro-bubble plate, the components are primarily mixed in a first extruder under the conditions that the temperature is 180-230 ℃ and the pressure is 20-28 MPa, 8-15 parts of foaming agent is injected into the tail end of the first extruder, sieve plates are arranged at the output end of the first extruder and the input end of a second extruder, and the materials are filtered and fed into the second extruder; the material mixing body is subjected to low-temperature high-pressure conditioning in a second extruder under the dynamic change state of the temperature condition of 180-160 ℃ and the pressure condition of 18-16 MPa, and then enters a static mixing section for static mixing, so that further homogenization is realized; entering a dynamic mixing section for dynamic mixing, realizing the consistency of the cross section temperature of the mixed material in the process of pressure and temperature gradual change under the temperature condition of 160-120 ℃ and the pressure condition of 16-12 MPa, and then extruding through a die head under the temperature condition of 90 +/-5 ℃ and the pressure condition of 8-11 MPa to prepare the composite plastic micro-bubble plate.
As a preferred technical scheme of the rigid foam composite plastic micro-bubble plate, the graphene particles comprise the following components in parts by weight:
1-9 parts of graphite micropowder and 1-9 parts of viscous carrier, and the components are subjected to melting and mixing, kneaded for 30-120 minutes and then enter a graphene particle preparation device to prepare the graphene particle.
As a preferred technical scheme of the rigid foam composite plastic micro-bubble plate, the adhesive carrier is thermoplastic plastics or raw rubber.
As a preferred technical scheme of the rigid foam composite plastic micro-bubble plate, the graphene particles comprise the following components in parts by weight:
40-70 parts of graphite micro powder, 20-60 parts of PE (polyethylene), 5-8 parts of nano montmorillonite and 2-4 parts of aluminum hydroxide, and the components are melted, mixed and kneaded for 30-120 minutes and then enter a graphene particle preparation device to prepare the graphene nano-composite material.
As a preferred technical scheme of the rigid foam composite plastic micro-bubble plate, the rigid foam composite plastic micro-bubble plate comprises the following components in parts by weight:
80.0-88.0 parts of polystyrene, 1.0 part of EVOH, 0.03-0.08 part of monoglyceride, 3.0-4.5 parts of graphene particles, 3.0 parts of nano montmorillonite, 1.5 parts of superfine phosphate, 6.0 parts of flame retardant and 10.0 parts of foaming agent.
As a preferred technical scheme of the rigid foam composite plastic micro-bubble plate, the rigid foam composite plastic micro-bubble plate also comprises the following components in parts by weight:
0.01 part of vermiculite powder.
As a preferred technical scheme of the rigid foam composite plastic micro-bubble plate, the rigid foam composite plastic micro-bubble plate comprises the following components in parts by weight:
90.0-93.0 parts of polystyrene, 1.0 part of EVOH, 0.1-0.3 part of monoglyceride, 4.0-5.5 parts of graphene particles, 1.0 part of nano montmorillonite, 1.0 part of superfine phosphate, 7.0 parts of flame retardant and 8-15 parts of foaming agent.
As a preferred technical scheme of the rigid foam composite plastic micro-bubble plate, the foaming agent is a carbon dioxide composite foaming agent.
The application discloses a manufacturing method of a rigid foam composite plastic micro-bubble plate, which comprises the following steps:
(1) 85.0-93.0 parts of polystyrene, 1.0 part of EVOH, 0.02-0.3 part of monoglyceride, 2.0-7.0 parts of graphene particles, 1.0-3.0 parts of nano montmorillonite, 1.0-1.5 parts of phosphate and 5.0-7.0 parts of flame retardant are uniformly mixed by a material mixer to form a mixed material; in order to increase the nucleation number and realize the micro-bubbles, 0.6 part of superfine talcum powder can be further added;
(2) conveying the mixed material to a first extruder, and primarily mixing under the dynamic change state of the temperature condition of 180-230 ℃ and the pressure condition of 20-28 MPa;
(3) injecting 8-15 parts of foaming agent into the tail end of the first extruder;
(4) filtering the mixed material injected with the foaming agent;
(5) feeding the processed mixed material into a second extruder, and carrying out low-temperature high-pressure mixing under the dynamic change state of the temperature condition of 180-160 ℃ and the pressure condition of 18-16 MPa;
(6) entering a static mixing section for static mixing;
(7) entering a dynamic mixing section for dynamic mixing;
(8) and arranging an extrusion die head at the tail end of the second extruder, heating the die head to 90 +/-5 ℃, extruding the material through the die head under the expansion release pressure of 8MPa-11MPa, and pressing into the composite plastic micro-foam board.
Benefits of the present application include, but are not limited to:
1. the application provides a rigid foam composite plastic micro-bubble plate produced by polystyrene, EVOH, monoglyceride, graphene particles, nano montmorillonite, phosphate, a flame retardant and a foaming agent, wherein:
polystyrene functions as the host material for the foam.
EVOH is an ethylene/vinyl alcohol copolymer, has better barrier property to gas, and can effectively enable bubbles to be more uniform and dense and prevent gas from seeping in the production and preparation process adopting a gas composite foaming agent;
the monoglyceride has the functions of adjusting the friction coefficient of the mixing body in the extrusion die head process and simultaneously improving the surface flatness of the extruded foam plate.
The nano montmorillonite has the functions of improving the nucleation number of the foaming agent to realize micro bubbles and has the synergistic flame retardant effect with the graphene. The superfine talcum powder can also be used for replacing nano montmorillonite, and the nucleation number is increased to realize the microvesicle.
The phosphate is superfine phosphate, such as aluminum phosphate, ammonium phosphate and other materials, and has the function of realizing synergistic flame retardant effect with the nanometer montmorillonite.
The flame retardant has the functions of improving the flame retardant property of the foam plastic and improving the oxygen index.
The graphene mainly realizes the mixing grafting of a plastic body, so that short-chain polystyrene is grafted into a long-chain mixing body, and the mechanical property of the composite plastic is improved; the super heat conductivity of the graphene is utilized to realize stable and uniform temperature of the composite plastic mixing melt in the extrusion process, the extrusion foaming process is adjusted and ensured to be consistent, and foam holes for producing the foam plastic are uniform and consistent; the graphene grafted composite plastic has high mechanical property, ensures that the cell walls of the cells are kept stretched without breaking the cells, forms a closed cell structure, and realizes stable ultralow heat conductivity of the composite foam plastic.
The carbon dioxide composite fluid foaming agent mainly plays a role in foaming composite plastics. Carbon dioxide is an environment-friendly foaming agent, nitrogen dioxide can be used to replace carbon dioxide, and one or more foaming agents can be compounded to mainly achieve the purpose of environmental protection of the foaming agent. Composite foaming can generally be achieved using 2-5 parts carbon dioxide with 5-8 parts of 152a blowing agent.
The vermiculite powder is added into the raw materials, can improve the corrosion resistance of the micro-bubble plate on the premise that the whole micro-bubble plate is light as the superfine micropowder, and realizes different optical characteristics by utilizing the refraction performance of the micro-bubble plate on light.
2. The preparation method adopts the whole-process pressure control and temperature control technology, the temperature is stably raised and pressurized in the primary mixing process, the composite environment-friendly foaming agent is utilized to ensure the consistency of the foaming compactness of the formed product on the premise of ensuring the environment protection, the lower heat conductivity coefficient can effectively improve the heat preservation characteristic of the micro-bubble plate, and the temperature is stably lowered and pressurized in the second extruder, so that the low-temperature high-pressure mixing and regulation are realized, and the static mixing and dynamic mixing interact, so that the final formed product has better structural performance, strong compression resistance and tensile resistance, the tensile resistance of an outer wall heat preservation system can be effectively improved, the possibility that the heat preservation plate falls off is reduced, the fireproof and flame-retardant characteristics are good, the fire is prevented from spreading on the surface of a wall body, the use process is safer, in addition, the final formed product reduces the thickness of the plate while ensuring the high performance, and the structural performance of the outer wall heat preservation system is improved, obviously reduces the production cost and can achieve the purposes of energy conservation and emission reduction.
Detailed Description
The present application will be described in detail with reference to examples, but the present application is not limited to these examples.
Example 1
The rigid foam composite plastic micro-bubble plate comprises the following components in parts by weight:
85.0 parts of polystyrene, 1.0 part of EVOH, 0.02 part of monoglyceride, 7.0 parts of graphene particles, 3.0 parts of nano montmorillonite, 1.5 parts of phosphate, 7.0 parts of flame retardant and 14 parts of foaming agent;
in this example, the rigid foam plastic micro-bubble plate is manufactured by the following steps:
(1) adding the mixed materials into a first double-screw extruder;
(2) primarily mixing in a first extruder under the condition that the temperature is 180-230 ℃ and the pressure is 20-28 Mpa in a dynamic change state, injecting 8-15 parts of foaming agent into the tail end of the first extruder, arranging screen plates at the output end of the first extruder and the input end of a second extruder, and feeding materials into the second extruder after filtering; the material mixing body is subjected to low-temperature high-pressure conditioning in a second extruder under the dynamic change state of the temperature condition of 180-160 ℃ and the pressure condition of 18-16 MPa, and then enters a static mixing section for static mixing, so that further homogenization is realized; entering a dynamic mixing section for dynamic mixing, realizing the consistency of the cross section temperature of the mixed material in the process of pressure and temperature gradual change under the temperature condition of 160-120 ℃ and the pressure condition of 16-12 MPa, and then extruding through a die head under the temperature condition of 90 +/-5 ℃ and the pressure condition of 8-11 MPa to prepare the composite plastic micro-bubble plate.
The performance indexes of the produced foam board are as follows:
(1) compressive strength: 485 kPa.
(2) Density: 33kg/m3。
(3) Closed pore rate: 98 percent.
(4) Coefficient of thermal conductivity: discharging: 0.0148 w/(m.K), and standard thermal conductivity 0.021 w/(m.K).
(5) Combustion stage B1. Oxygen index: 30.8 percent.
(6) Tensile strength: 460 kPa.
(7) The diameter of the micropores is <85 μm.
(8) The cell wall thickness is <600 nm.
In the embodiment, the heat conductivity coefficient of the outlet machine is only 0.0148 w/(m.K), the standard heat conductivity coefficient is only 0.021 w/(m.K), the heat conductivity coefficient is an optimal scheme, and the heat insulation capability of the external wall heat insulation board is effectively improved.
Example 2
92.0 parts of polystyrene, 1.0 part of EVOH, 0.03 part of monoglyceride, 5.50 parts of graphene particles, 0.6 part of superfine talcum powder, 1.0 part of nano montmorillonite, 1.0 part of phosphate, 6.0 parts of flame retardant and 13 parts of foaming agent;
the same parts of this embodiment as embodiment 1 will not be described again.
The performance indexes of the produced foam board are as follows:
(1) compressive strength: 520 kpa.
(2) Density: 34kg/m3。
(3) Closed pore rate: 98 percent.
(4) Coefficient of thermal conductivity: discharging: 0.015 w/(m.K), and a standard thermal conductivity of 0.020 w/(m.K).
(5) Combustion stage B1. Oxygen index: 31.8 percent.
(6) Tensile strength: 420 kPa.
(7) The diameter of the micropores is <60 μm.
(8) The cell wall thickness is <550 nm.
Compared with the embodiment 1, in the embodiment, the proportion of the polystyrene is increased, the proportion of other components is correspondingly reduced, meanwhile, the superfine talcum powder is added in the embodiment, the nucleation number is increased, the micro-bubbles are realized, and the flame retardant performance and the compressive strength are optimal schemes in the embodiment.
Example 3
88.0 parts of polystyrene, 1.0 part of EVOH, 0.02 part of monoglyceride, 4.0 parts of graphene particles, 3.0 parts of nano montmorillonite, 1.5 parts of phosphate, 5.0 parts of flame retardant and 12 parts of foaming agent;
the same parts of this embodiment as embodiment 1 will not be described again.
The performance indexes of the produced foam board are as follows:
(1) compressive strength: 386 kPa.
(2) Density: 33kg/m3。
(3) The closed pore rate: 96 percent.
(4) Coefficient of thermal conductivity: 0.018 w/(m.K) of the product, and 0.023 w/(m.K) of the standard thermal conductivity coefficient.
(5) Combustion stage B1. Oxygen index: 30.8 percent.
(6) Tensile strength: 312 kPa.
(7) The diameter of the micropores is <70 μm.
(8) The cell wall thickness is <500 nm.
Compared with the embodiment 1, the proportion of the polystyrene is increased by a proper amount, the proportions of the graphene particles, the flame retardant and the foaming agent are reduced by a proper amount, and all indexes of the formed micro-bubble plate are better schemes and have better universality.
Example 4
90.0 parts of polystyrene, 1.0 part of EVOH, 0.02 part of monoglyceride, 5.5 parts of graphene particles, 0.6 part of superfine talcum powder, 1.0 part of nano montmorillonite, 1.0 part of phosphate, 6.0 parts of flame retardant and 12 parts of foaming agent.
The same parts of this embodiment as embodiment 1 will not be described again.
(1) 415kPa compressive strength.
(2) The density was 33.8kg/m 3.
(3) The closed cell rate is 98 percent.
(4) Coefficient of thermal conductivity: 0.017 w/(m.K) for output and 0.021 w/(m.K) for standard heat conductivity coefficient.
(5) Combustion stage B1. Oxygen index: 30.2 percent.
(6) Tensile strength: 356 kPa.
(7) The pore diameter was <65 μm.
(8) The cell wall thickness is <450 nm.
Compared with the embodiment 1, the proportion of polystyrene is increased in a proper amount, the proportion of graphene particles, nano-montmorillonite, phosphate and a flame retardant is reduced in a proper amount, meanwhile, the superfine talcum powder is added, the nucleation number is increased, the micro-bubbles are realized, the multi-parameter balance of the formed micro-bubble plate is realized, and the thickness of the micro-bubble wall is optimal.
Example 5
92.0 parts of polystyrene, 1.0 part of EVOH, 0.02 part of monoglyceride, 5.0 parts of graphene particles, 0.6 part of superfine talcum powder, 2.0 parts of nano montmorillonite, 1.0 part of phosphate, 6.0 parts of flame retardant, 12 parts of foaming agent and 0.01 part of vermiculite powder.
The same parts of this embodiment as embodiment 1 will not be described again.
The performance indexes of the produced foam board are as follows:
(1) compressive strength: 356 kPa.
(2) Density: 34.0kg/m3。
(3) Closed pore rate: 99 percent.
(4) Coefficient of thermal conductivity: the heat conductivity coefficient of the outlet machine is 0.0168 w/(m.K);
the standard thermal conductivity is 0.0205 w/(m.K).
(5) Combustion stage B1. Oxygen index: 32.5 percent.
(6) Tensile strength: 320 kPa.
(7) The diameter of the micropores is <50 μm.
(8) The cell wall thickness is <450 nm.
Compared with the embodiment 1, the proportion of polystyrene is increased by a proper amount, the proportion of graphene particles, nano-montmorillonite, phosphate, a flame retardant and a foaming agent is reduced, meanwhile, the superfine talcum powder is added in the embodiment, the nucleation number is increased, the micro-bubbles are realized, the formed micro-bubble plate has flashing points, and different colors can be flashed at different angles under sunlight so as to distinguish different plates.
The performance index of the foam board meets the requirement of the product performance of the invention.
By combining the technical schemes and technical effects disclosed in embodiments 1 to 5, the performance indexes of the rigid foam composite micro-bubble plate disclosed by the application are as follows:
(1) compressive strength: 350-550 kPa.
(2) Density: 33-35kg/m3。
(3) Closed pore rate: 95 to 99 percent.
(4) Coefficient of thermal conductivity: 0.0148-0.018 w/(m.K) of discharging machine;
the standard thermal conductivity is 0.020-0.023 w/(m.K).
(5) Combustion stage B1. Oxygen index: 30.0 to 32.5 percent.
(6) Tensile strength: 320 and 500 kPa.
(7) The diameter of the micropores is <50 μm.
(8) The cell wall thickness is <450 nm.
The application discloses a composite microbubble board of rigid foam, the structural strength of microbubble board can be ensured to resistance to compression, tensile strength parameter, and the probability of droing after the outer wall insulation installation is accomplished reduces by a wide margin, and coefficient of heat conductivity is no longer than 0.018w/(m K) at most, and the thermal insulation performance of microbubble board can be ensured to less coefficient of heat conductivity, and the burning is hierarchical for B1 level, can effectively realize fire-retardant effect, and the micropore in the microbubble board distributes evenly and closely, has further guaranteed the atress ability of panel.
Comparative example 1
For comparison of the performance indexes of the GPES foam plate in example 5 of the application with those of the existing GPES foam plate, see the first table:
watch 1
As can be seen from the above table, compared with the existing GPES foam board, the rigid foam composite micro-bubble board disclosed in the present application has an improved manufacturing method, and the original GPES foam board needs to be processed through twelve consecutive sections during production and preparation, including a temperature-raising melting zone from the first section to the third section, a melting-pressurizing mixing zone from the fourth section to the fifth section, a high-temperature high-pressure mixing zone from the sixth section to the seventh section, a temperature-lowering and pressure-reducing zone from the eighth section to the tenth section, a mechanical dynamic mixing temperature-lowering zone of the eleventh section, and a static mixing zone of the twelfth section, and finally is subjected to extrusion molding in an extrusion die. The manufacturing method of the rigid foam composite micro-bubble plate disclosed by the application is greatly simplified, and the performance of the obtained final formed product is more scientific and reasonable compared with the performance of the conventional GPES foam plate, so that the performance requirement of an external thermal insulation system of an external wall is better met, the thermal insulation performance is further improved, and the engineering cost is further reduced. On the premise of ensuring high performance, the production cost is greatly reduced, and the method is more favorable for market promotion.
The above description is only an example of the present application, and the protection scope of the present application is not limited by these specific examples, but is defined by the claims of the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the technical idea and principle of the present application should be included in the protection scope of the present application.
Claims (9)
1. The rigid foam composite plastic micro-bubble plate is characterized by comprising the following components in parts by weight:
85.0-93.0 parts of polystyrene, 1.0 part of EVOH, 0.02-0.3 part of monoglyceride, 2.0-7.0 parts of graphene particles, 1.0-3.0 parts of nano montmorillonite, 1.0-1.5 parts of phosphate, 5.0-7.0 parts of flame retardant and 8-15 parts of foaming agent, wherein the components are firstly subjected to batching and mixing, then enter a first extruder for carrying out a melt mixing process, realize preliminary melt mixing at a certain temperature and pressure, then enter a second extruder for carrying out low-temperature high-pressure adjustment, then enter a static mixing section for further mixing, then enter a dynamic mixing section for carrying out dynamic mixing, and finally are extruded through a die head to prepare the composite plastic micro-bubble plate;
the components are primarily mixed in a first extruder under the condition that the temperature is 180-230 ℃ and the pressure is 20-28 MPa, 8-15 parts of foaming agent is injected into the tail end of the first extruder, screen plates are arranged at the output end of the first extruder and the input end of a second extruder, and the materials are filtered and fed into the second extruder; the material mixing body is subjected to low-temperature high-pressure adjustment in a second extruder under the dynamic change condition that the temperature condition is 180-160 ℃ and the pressure condition is 18-16 MPa, and then enters a static mixing section for static mixing, so that further homogenization is realized; then enters a dynamic mixing section for dynamic mixing, the consistency of the cross section temperature of the mixed material is realized in the process of pressure and temperature gradual change under the temperature condition of 160-120 ℃ and the pressure condition of 16-12 MPa, and then the mixed material is extruded by a die head under the temperature condition of 90 +/-5 ℃ and the pressure condition of 8-11 MPa to prepare the composite plastic micro-bubble plate.
2. The rigid foam composite plastic micro-bubble plate according to claim 1, wherein the graphene particles comprise the following components in parts by weight:
1-9 parts of graphite micropowder and 1-9 parts of viscous carrier, and the components are subjected to melting and mixing, kneaded for 30-120 minutes and then enter a graphene particle preparation device to prepare the graphene particle.
3. The syntactic rigid foam panel of claim 2, wherein said adhesive carrier is a thermoplastic or a raw rubber.
4. The rigid foam composite plastic micro-bubble plate according to claim 1, wherein the graphene particles comprise the following components in parts by weight:
40-70 parts of graphite micro powder, 20-60 parts of PE (polyethylene), 5-8 parts of nano montmorillonite and 2-4 parts of aluminum hydroxide, and the components are melted, mixed and kneaded for 30-120 minutes and then enter a graphene particle preparation device to prepare the graphene nano-composite material.
5. The rigid foam composite plastic micro-bubble plate according to claim 1, which comprises the following components in parts by weight:
85.0-88.0 parts of polystyrene, 1.0 part of EVOH, 0.03-0.08 part of monoglyceride, 3.0-4.5 parts of graphene particles, 3.0 parts of nano montmorillonite, 1.5 parts of phosphate, 6.0 parts of flame retardant and 10.0 parts of foaming agent.
6. The rigid foam composite plastic micro-bubble plate according to claim 1, further comprising the following components in parts by weight:
0.01 part of vermiculite powder.
7. The rigid foam composite plastic micro-bubble plate according to claim 1 or 6, comprising the following components in parts by weight:
90.0-93.0 parts of polystyrene, 1.0 part of EVOH, 0.1-0.3 part of monoglyceride, 4.0-5.5 parts of graphene particles, 1.0 part of nano montmorillonite, 1.0 part of phosphate, 7.0 parts of flame retardant and 8-15 parts of foaming agent.
8. The syntactic rigid foam plastics microcellular panel according to claim 1, wherein said foaming agent is a carbon dioxide syntactic foaming agent.
9. The manufacturing method of the rigid foam composite plastic micro-bubble plate is characterized by comprising the following steps:
(1) 85.0-93.0 parts of polystyrene, 1.0 part of EVOH, 0.02-0.3 part of monoglyceride, 4.0-5.5 parts of graphene particles, 1.0-3.0 parts of nano montmorillonite, 1.0-1.5 parts of phosphate and 5.0-7.0 parts of flame retardant are uniformly mixed by a material mixer to form a mixed material;
(2) conveying the mixed material to a first extruder, and primarily mixing under the dynamic change state of the temperature condition of 180-230 ℃ and the pressure condition of 20-28 MPa;
(3) injecting 8-15 parts of foaming agent into the tail end of the first extruder;
(4) filtering the mixed material injected with the foaming agent;
(5) feeding the processed mixed material into a second extruder, and carrying out low-temperature high-pressure mixing under the dynamic change state of the temperature condition of 180-160 ℃ and the pressure condition of 18-16 MPa;
(6) entering a static mixing section for static mixing;
(7) entering a dynamic mixing section for dynamic mixing;
(8) and arranging an extrusion die head at the tail end of the second extruder, heating the die head to 90 +/-5 ℃, extruding the material through the die head under the expansion release pressure of 8MPa-11MPa, and pressing into the composite plastic micro-foam board.
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| WO2009155066A2 (en) * | 2008-05-28 | 2009-12-23 | The Ohio State University Research Foundation | Surfactant-free synthesis and foaming of liquid blowing agent-containing activated carbon-nano/microparticulate polymer composites |
| CN104231462A (en) * | 2014-09-30 | 2014-12-24 | 山东省建筑科学研究院 | GPES rigid foam composite plastic insulation board and manufacturing method thereof |
| CN106009348A (en) * | 2016-06-20 | 2016-10-12 | 无锡亿利恒新材料科技有限公司 | Inflaming retarding expandable polystyrene containing carbon granules and preparing method thereof |
| CN109021414A (en) * | 2017-06-09 | 2018-12-18 | 南京法宁格节能科技股份有限公司 | A kind of graphene modified flame-retardant granules of polystyrene and its squeeze out pellet cutting method |
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| WO2009155066A2 (en) * | 2008-05-28 | 2009-12-23 | The Ohio State University Research Foundation | Surfactant-free synthesis and foaming of liquid blowing agent-containing activated carbon-nano/microparticulate polymer composites |
| CN104231462A (en) * | 2014-09-30 | 2014-12-24 | 山东省建筑科学研究院 | GPES rigid foam composite plastic insulation board and manufacturing method thereof |
| CN106009348A (en) * | 2016-06-20 | 2016-10-12 | 无锡亿利恒新材料科技有限公司 | Inflaming retarding expandable polystyrene containing carbon granules and preparing method thereof |
| CN109021414A (en) * | 2017-06-09 | 2018-12-18 | 南京法宁格节能科技股份有限公司 | A kind of graphene modified flame-retardant granules of polystyrene and its squeeze out pellet cutting method |
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