CN112477047B - Secondary processing method of polystyrene foam board for building material - Google Patents
Secondary processing method of polystyrene foam board for building material Download PDFInfo
- Publication number
- CN112477047B CN112477047B CN202011246194.5A CN202011246194A CN112477047B CN 112477047 B CN112477047 B CN 112477047B CN 202011246194 A CN202011246194 A CN 202011246194A CN 112477047 B CN112477047 B CN 112477047B
- Authority
- CN
- China
- Prior art keywords
- polystyrene
- foam board
- treatment
- polystyrene foam
- melt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0021—Combinations of extrusion moulding with other shaping operations combined with joining, lining or laminating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2025/00—Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material
- B29K2025/04—Polymers of styrene
- B29K2025/06—PS, i.e. polystyrene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
- B29K2105/0011—Biocides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
- B29K2105/0044—Stabilisers, e.g. against oxydation, light or heat
Abstract
The invention provides a secondary processing method of a polystyrene foam board for building materials, which is characterized in that polystyrene raw materials are subjected to crushing treatment, grinding treatment, impurity screening and filtering treatment, heating and melting treatment, cooling treatment and forming treatment to prepare the polystyrene foam board, different functional additives and pumping protective gas are added into polystyrene melt to improve the corrosion resistance of the polystyrene foam board and reduce the weight of the polystyrene foam board, and the polystyrene foam board is subjected to cutting treatment, waterproof treatment and protective film layer forming treatment, so that the polystyrene foam board can have good waterproof performance and is convenient to be assembled and spliced randomly, the manufacturing difficulty and the manufacturing cost of the polystyrene foam board can be reduced, and the mechanical strength and the heat preservation performance of the polystyrene foam board can be improved.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a secondary processing method of a polystyrene foam board for building materials.
Background
With the development of social economy, high-rise buildings or super high-rise buildings have become the main building form of urban infrastructure, the high-rise buildings or super high-rise buildings can effectively improve the utilization efficiency of the buildings, and the traditional brick concrete structure and reinforced concrete structure can ensure the strength of the buildings, but the manufacturing process is complex and time-consuming, and the requirements of the high-rise buildings on low cost and light weight of building materials cannot be met. In addition, high-rise buildings require building materials having characteristics of heat preservation and convenience in assembly due to their own building characteristics. Therefore, the building materials in the prior art have great defects in the aspects of manufacturing process, manufacturing cost, material weight, material heat preservation and the like.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a secondary processing method of a polystyrene foam board for building materials, which comprises the steps of crushing and grinding a polystyrene raw material to obtain a polystyrene powder, screening and filtering impurities of the polystyrene powder to obtain the polystyrene powder meeting the condition of preset particle size, placing the polystyrene powder in a protective atmosphere environment for heating and melting treatment to obtain a corresponding polystyrene melt, adding a functional additive into the polystyrene melt and pumping protective gas to obtain a pretreated polystyrene melt, cooling and molding the pretreated polystyrene melt to obtain the polystyrene foam board, cutting and cutting the polystyrene foam board, so as to obtain a polystyrene foam board with a preset shape and/or a preset size, and finally, performing waterproof treatment and protective film layer forming treatment on the polystyrene foam board subjected to cutting treatment, thereby forming the polystyrene foam board for building materials; therefore, the polystyrene foam board secondary processing method for the building material is used for preparing the polystyrene foam board by crushing, grinding, screening and filtering impurities, heating and melting, cooling and forming polystyrene raw materials, adding different functional additives and pumping protective gas into polystyrene melt to improve the corrosion resistance and reduce the weight of the polystyrene foam board, and cutting, waterproofing and forming a protective film layer on the polystyrene foam board, so that the polystyrene foam board has good waterproof performance and is convenient to be assembled and spliced randomly, the manufacturing difficulty and the manufacturing cost are reduced, and the mechanical strength and the heat preservation performance are improved.
The invention provides a secondary processing method of a polystyrene foam board for building materials, which is characterized by comprising the following steps:
step S1, crushing and grinding the polystyrene raw material to obtain polystyrene powder, and screening and filtering impurities of the polystyrene powder to obtain polystyrene powder meeting the predetermined particle size condition;
step S2, placing the polystyrene powder in a protective atmosphere environment for heating and melting treatment to obtain a corresponding polystyrene melt, and simultaneously adding a functional additive to the polystyrene melt and pumping protective gas to obtain a pretreated polystyrene melt;
step S3, cooling and molding the pretreated polystyrene melt to obtain a polystyrene foam board, and cutting the polystyrene foam board to obtain the polystyrene foam board with a preset shape and/or a preset size;
step S4, the polystyrene foam board after the cutting processing is processed by waterproof processing and protective film layer forming processing, thereby forming the polystyrene foam board for building materials;
further, in the step S1, the crushing and grinding of the polystyrene raw material to obtain the polystyrene powder specifically includes:
step S101, impact crushing treatment is carried out on the polystyrene raw material, so that the polystyrene raw material is converted into a plurality of polystyrene blocks with irregular shapes;
step S102, grinding the polystyrene block at a constant speed so as to grind the polystyrene block into polystyrene powder, wherein the grinding speed of the constant-speed grinding is 20-60 r/S;
step S103, acquiring an image of the polystyrene powder in the constant-speed grinding treatment, determining the actual reflectivity of the polystyrene packaging body according to the image, comparing the actual reflectivity with a preset reflectivity threshold, if the reflectivity of the driver is lower than the preset reflectivity threshold, increasing the grinding speed of the constant-speed grinding treatment, and otherwise, keeping the current grinding speed of the constant-speed grinding treatment unchanged;
further, in the step S1, the step of screening impurities and filtering the polystyrene powder to obtain the polystyrene powder satisfying the predetermined particle size condition specifically includes
Step S104, after the polystyrene powder is subjected to screen screening and filtering treatment, periodically scanning structured light in a light and shade stripe form on the polystyrene powder, and acquiring light intensity distribution information formed after the polystyrene powder reflects and/or refracts the structured light;
step S105, determining the average particle size of polystyrene powder particles in the polystyrene powder according to the light intensity distribution information, comparing the average particle size with a preset particle size threshold, stopping the screen screening and filtering if the average particle size is smaller than or equal to the preset particle size threshold, or continuing the screen screening and filtering until the average particle size is smaller than or equal to the preset particle size threshold;
further, in step S2, the step of placing the polystyrene powder in a protective atmosphere environment for heating and melting to obtain a corresponding polystyrene melt specifically includes:
step S201, placing the polystyrene powder in a melting furnace with a flowing nitrogen protection atmosphere environment for heating and melting treatment, wherein the flow rate of nitrogen in the flowing nitrogen protection atmosphere environment is 2m3/s-15m3/s；
Step S202, in the process of heating and melting treatment, firstly, preheating the polystyrene powder at 100-170 ℃, and uniformly stirring the polystyrene powder in the process of preheating treatment, wherein the duration of the preheating treatment is 10-30 min, and the corresponding stirring speed is 30-60 r/S;
step S203, after the pre-heating treatment, performing secondary heating treatment on the polystyrene powder at 200-260 ℃ so as to convert the polystyrene powder into a polystyrene melt, and uniformly stirring the polystyrene melt in the secondary heating treatment process, wherein the corresponding stirring speed is 20-80 r/S;
further, in the step S2, adding a functional additive to the polystyrene melt and pumping a protective gas to obtain a pretreated polystyrene melt specifically includes:
step S204, adding an anti-ultraviolet additive, an antioxidant and titanium oxide particles to the polystyrene melt, wherein the weight ratio of the polystyrene melt to the anti-ultraviolet additive to the antioxidant to the titanium oxide particles is 100-: 0.1-0.5: 0.2-0.8: 0.2-0.6;
step S205, in the process of uniformly stirring the polystyrene melt, pumping nitrogen into the polystyrene melt so as to uniformly form a plurality of nitrogen bubbles inside the polystyrene melt, thereby obtaining the pretreated polystyrene melt, wherein the pumping rate of the nitrogen is 0.1m3/s-0.8m3/s；
Further, in the step S3, the cooling process and the molding process are performed on the pretreated polystyrene melt, thereby obtaining a polystyrene foam board body including:
step S301, carrying out primary natural cooling treatment on the pretreated polystyrene melt, so as to cool the temperature of the pretreated polystyrene melt to 120-160 ℃;
step S302, carrying out co-extrusion molding treatment on the polystyrene melt subjected to the first natural cooling treatment to generate a polystyrene foam board with a preset thickness, wherein the thickness of the polystyrene foam board is 5-100 cm;
step S303, carrying out natural cooling treatment on the polystyrene foam board for the second time, so as to cool the temperature of the polystyrene foam board to a normal temperature state;
further, in the step S3, the cutting process for the polystyrene foam board to obtain the polystyrene foam board body with the preset shape and/or the preset size includes:
step S304, cutting the polystyrene foam board to obtain a plurality of rectangular polystyrene foam boards with different lengths and different widths, wherein the length is 20cm-150cm, and the width is 20cm-150 cm;
step S305, cutting the side surfaces around the rectangular polystyrene foam board to form a periodic rectangular tooth socket structure on the side surfaces, so that different rectangular polystyrene foam boards can be spliced and combined through the rectangular tooth socket structure, wherein the depth of the rectangular tooth socket structure is 2cm-5cm, and the width of the rectangular tooth socket structure is 2cm-5 cm;
further, in the step S4, the step of performing a waterproofing process and a protective film layer molding process on the polystyrene foam board subjected to the cutting process to form the polystyrene foam board body for building materials includes:
step S401, coating hydrophobic resin coatings on the upper side surface, the lower side surface and the peripheral side surfaces of the polystyrene foam board subjected to the cutting treatment, and performing ultraviolet irradiation drying curing treatment to form a corresponding waterproof layer, wherein the thickness of the waterproof layer is 1mm-5 mm;
step S402 of forming the protective film layer by applying a hardening resin paint containing (meth) acrylate on the waterproof layers of the upper surface, the lower surface, and the peripheral side surfaces and drying the paint, thereby forming the polystyrene foam board for building materials.
Compared with the prior art, the secondary processing method of the polystyrene foam board for the building material comprises the steps of crushing and grinding a polystyrene raw material to obtain a polystyrene powder, screening and filtering impurities from the polystyrene powder to obtain the polystyrene powder meeting the predetermined particle size condition, placing the polystyrene powder in a protective atmosphere environment for heating and melting to obtain a corresponding polystyrene melt, adding a functional additive to the polystyrene melt and pumping protective gas to obtain a pretreated polystyrene melt, cooling and molding the pretreated polystyrene melt to obtain the polystyrene foam board, cutting the polystyrene foam board to obtain the polystyrene foam board with a preset shape and/or a preset size, finally, the polystyrene foam board after the cutting treatment is subjected to waterproof treatment and protective film layer forming treatment, so that the polystyrene foam board for building materials is formed; therefore, the polystyrene foam board secondary processing method for the building material is used for preparing the polystyrene foam board by crushing, grinding, screening and filtering impurities, heating and melting, cooling and forming polystyrene raw materials, adding different functional additives and pumping protective gas into polystyrene melt to improve the corrosion resistance and reduce the weight of the polystyrene foam board, and cutting, waterproofing and forming a protective film layer on the polystyrene foam board, so that the polystyrene foam board has good waterproof performance and is convenient to be assembled and spliced randomly, the manufacturing difficulty and the manufacturing cost are reduced, and the mechanical strength and the heat preservation performance are improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a secondary processing method of a polystyrene foam board for building materials provided by the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a schematic flow chart of a secondary processing method of a polystyrene foam board for a building material according to an embodiment of the present invention is shown. The secondary processing method of the polystyrene foam board for the building material comprises the following steps:
step S1, crushing and grinding the polystyrene raw material to obtain polystyrene powder, and screening and filtering impurities of the polystyrene powder to obtain polystyrene powder meeting the predetermined particle size condition;
step S2, placing the polystyrene powder in a protective atmosphere environment for heating and melting treatment to obtain a corresponding polystyrene melt, and simultaneously adding a functional additive to the polystyrene melt and pumping protective gas to obtain a pretreated polystyrene melt;
step S3, cooling and molding the pretreated polystyrene melt to obtain a polystyrene foam board, and cutting the polystyrene foam board to obtain the polystyrene foam board with a preset shape and/or a preset size;
step S4, the polystyrene foam board after the cutting process is subjected to a waterproofing process and a protective film forming process, thereby forming a polystyrene foam board for building materials.
The beneficial effects of the above technical scheme are: the polystyrene foam board secondary processing method for the building material comprises the steps of carrying out crushing treatment, grinding treatment, impurity screening and filtering treatment, heating and melting treatment, cooling treatment and forming treatment on polystyrene raw materials to prepare the polystyrene foam board, adding different functional additives and pumping protective gas into polystyrene melt to improve the corrosion resistance and reduce the weight of the polystyrene foam board, and carrying out cutting treatment, waterproof treatment and protective film layer forming treatment on the polystyrene foam board, so that the polystyrene foam board can have good waterproof performance and is convenient to be assembled and spliced randomly, the manufacturing difficulty and manufacturing cost of the polystyrene foam board can be reduced, and the mechanical strength and the heat insulation performance of the polystyrene foam board can be improved.
Preferably, in the step S1, the crushing and grinding of the polystyrene raw material to obtain the polystyrene powder specifically includes:
step S101, impact crushing treatment is carried out on the polystyrene raw material, so that the polystyrene raw material is converted into a plurality of polystyrene blocks with irregular shapes;
step S102, grinding the polystyrene block at a constant speed to grind the polystyrene block into polystyrene powder, wherein the grinding speed of the constant-speed grinding is 20-60 r/S;
step S103, in the constant-speed grinding treatment, obtaining an image of the polystyrene powder, determining the actual reflectivity of the polystyrene packaging body according to the image, comparing the actual reflectivity with a preset reflectivity threshold, if the reflectivity of the driver is lower than the preset reflectivity threshold, increasing the grinding speed of the constant-speed grinding treatment, and otherwise, keeping the current grinding speed of the constant-speed grinding treatment unchanged.
The beneficial effects of the above technical scheme are: the polystyrene raw material is crushed and ground to obtain a corresponding polystyrene powder, so that the heating uniformity and the melting speed of the polystyrene in the subsequent heating and melting process of the polystyrene can be improved; the reflectivity of the polystyrene powder bodies with different particle sizes can be changed correspondingly along with the size change of the particle size, and the corresponding actual reflectivity is determined by analyzing and processing the images of the polystyrene powder bodies, so that the actual reflectivity can be synchronously calculated in the grinding process, and the grinding speed can be timely and adaptively adjusted according to the size relation between the actual reflectivity and the preset reflectivity threshold, thereby improving the grinding efficiency.
Preferably, in the step S1, the step of screening impurities and filtering the polystyrene powder to obtain the polystyrene powder satisfying the predetermined particle size condition specifically includes
Step S104, after the polystyrene powder is screened and filtered by a screen, periodically scanning structured light in a light and shade stripe form on the polystyrene powder, and acquiring light intensity distribution information formed after the polystyrene powder reflects and/or refracts the structured light;
step S105, determining the average particle size of the polystyrene powder particles in the polystyrene powder according to the light intensity distribution information, comparing the average particle size with a preset particle size threshold, stopping the screen screening and filtering if the average particle size is smaller than or equal to the preset particle size threshold, otherwise, continuing the screen screening and filtering until the average particle size is smaller than or equal to the preset particle size threshold.
The beneficial effects of the above technical scheme are: when the granularity of the polystyrene powder is different, the polystyrene powder has different reflection and/or refraction effects on the light in the bright and dark stripe form which is irradiated on the polystyrene powder, and the overall average granularity of the polystyrene powder can be quickly and reliably analyzed and processed by obtaining the light intensity distribution information formed after the polystyrene powder reflects and/or refracts the structured light, so that the calculation accuracy of the average granularity of the polystyrene powder is ensured.
Preferably, in step S2, the step of placing the polystyrene powder in a protective atmosphere for heat melting to obtain the corresponding polystyrene melt specifically includes:
step S201, placing the polystyrene powder in a melting furnace with a flowing nitrogen protection atmosphere environment for heating and melting treatment, wherein the flow rate of nitrogen in the flowing nitrogen protection atmosphere environment is 2m3/s-15m3/s；
Step S202, in the process of the heating and melting treatment, firstly, preheating the polystyrene powder at 100-170 ℃, and uniformly stirring the polystyrene powder in the process of the preheating treatment, wherein the duration of the preheating treatment is 10-30 min, and the corresponding stirring speed is 30-60 r/S;
step S203, after the preheating treatment, performing secondary heating treatment on the polystyrene powder at 200-260 ℃ so as to convert the polystyrene powder into polystyrene melt, and uniformly stirring the polystyrene melt in the secondary heating treatment process, wherein the corresponding stirring speed is 20-80 r/S.
The beneficial effects of the above technical scheme are: the chemical stability of the polystyrene powder can be ensured in the heating process by heating the polystyrene powder in the protective atmosphere environment of flowing nitrogen; the polystyrene powder is preheated by 100-170 ℃, so that all the polystyrene powder can be uniformly heated, the situation that the polystyrene powder is locally overheated and is not uniformly heated is avoided, and the polystyrene powder can be rapidly converted into the polystyrene melt by performing secondary heating treatment on the polystyrene powder at 200-260 ℃, so that the efficiency of the conversion process is improved, and the stability of the molten state of the polystyrene melt is maintained.
Preferably, in the step S2, adding functional additives and pumping protective gas to the polystyrene melt to obtain a pretreated polystyrene melt specifically comprises:
step S204, adding an anti-ultraviolet additive, an antioxidant and titanium oxide particles to the polystyrene molten mass, wherein the weight ratio of the polystyrene molten mass to the anti-ultraviolet additive to the antioxidant to the titanium oxide particles is 100-120: 0.1-0.5: 0.2-0.8: 0.2-0.6;
step S205, in the process of uniformly stirring the polystyrene melt, pumping nitrogen gas into the polystyrene melt to uniformly form a plurality of nitrogen gas bubbles inside the polystyrene melt, thereby obtaining the pretreated polystyrene melt, wherein the pumping rate of the nitrogen gas is 0.1m3/s-0.8m3/s。
The beneficial effects of the above technical scheme are: the ultraviolet resistance and the oxidation resistance of the subsequently manufactured polystyrene foam board can be improved by adding the ultraviolet resistance additive, the antioxidant and the titanium oxide particles into the polystyrene melt, and the antibacterial performance of the polystyrene foam board can be improved by adding the titanium oxide particles; and in the process of uniformly stirring the polystyrene melt, nitrogen is pumped into the polystyrene melt, so that fine bubbles can be uniformly formed in the polystyrene melt, and the weight of the polystyrene foam board can be effectively reduced and the heat insulation performance of the polystyrene foam board can be improved.
Preferably, in the step S3, the cooling process and the molding process are performed on the pretreated polystyrene melt, thereby obtaining a polystyrene foam board body comprising:
step S301, carrying out primary natural cooling treatment on the pretreated polystyrene melt so as to cool the temperature of the pretreated polystyrene melt to 120-160 ℃;
step S302, carrying out co-extrusion molding treatment on the polystyrene melt subjected to the first natural cooling treatment so as to generate a polystyrene foam board with a preset thickness, wherein the thickness of the polystyrene foam board is 5cm-100 cm;
step S303, the polystyrene foam board is naturally cooled for the second time, so that the temperature of the polystyrene foam board is cooled to a normal temperature state.
The beneficial effects of the above technical scheme are: the polystyrene foam board can be improved in a cooling recrystallization state and convenient to rapidly manufacture polystyrene foam boards with various sizes as required by naturally cooling and co-extruding the polystyrene melt, so that the structural defects in the polystyrene foam board are reduced to the maximum extent.
Preferably, in the step S3, the cutting process for the polystyrene foam board to obtain the polystyrene foam board body with the preset shape and/or the preset size includes:
step S304, cutting the polystyrene foam board to obtain a plurality of rectangular polystyrene foam boards with different lengths and different widths, wherein the length is 20cm-150cm, and the width is 20cm-150 cm;
step S305, cutting the side surfaces around the rectangular polystyrene foam board to form a periodic rectangular gullet structure on the side surfaces, so that different rectangular polystyrene foam boards can be spliced and combined through the rectangular gullet structure, wherein the depth of the rectangular gullet structure is 2cm-5cm, and the width of the rectangular gullet structure is 2cm-5 cm.
The beneficial effects of the above technical scheme are: through cutting the side to this rectangle form polystyrene cystosepiment all around to this forms periodic rectangle tooth's socket structure on this side, can make different polystyrene cystosepiments assemble the concatenation each other according to actual building demand, thereby improves the concatenation convenience and the steadiness of polystyrene cystosepiment.
Preferably, in the step S4, the waterproof processing and the protective film layer forming processing are performed on the polystyrene foam board subjected to the cutting processing, so as to form the polystyrene foam board body for building materials, including:
step S401, coating hydrophobic resin coatings on the upper side surface, the lower side surface and the peripheral side surfaces of the polystyrene foam board subjected to the cutting treatment, and performing ultraviolet irradiation, drying and curing treatment to form a corresponding waterproof layer, wherein the thickness of the waterproof layer is 1mm-5 mm;
step S402, a hardened resin coating containing (meth) acrylate is applied on the waterproof layers of the upper surface, the lower surface and the peripheral side surface, and a drying treatment is performed to form the protective film layer, thereby forming a polystyrene foam board for building materials.
The beneficial effects of the above technical scheme are: the waterproof layer is formed by coating the hydrophobic resin material, so that the waterproof performance of the waterproof layer can be improved, the manufacturing difficulty of the waterproof layer can be reduced, and the protective film layer is formed by adopting the hardened resin coating containing (methyl) acrylic ester, so that the scratch resistance and the mechanical strength of the surface of the polystyrene foam board can be improved, and the service life of the polystyrene foam board can be prolonged to the maximum extent.
From the above description, it can be seen that the polystyrene foam board secondary processing method for building materials obtains polystyrene powder by crushing and grinding polystyrene raw materials, and performs impurity screening and filtering on the polystyrene powder to obtain polystyrene powder satisfying predetermined particle size conditions, and places the polystyrene powder in a protective atmosphere environment for heating and melting to obtain corresponding polystyrene melt, and at the same time adds functional additives and pumps protective gas to the polystyrene melt to obtain a pre-treated polystyrene melt, and then performs cooling and forming on the pre-treated polystyrene melt to obtain polystyrene foam board, and cuts the polystyrene foam board to obtain polystyrene foam board with predetermined shape and/or predetermined size, finally, the polystyrene foam board after the cutting treatment is subjected to waterproof treatment and protective film layer forming treatment, so that the polystyrene foam board for building materials is formed; therefore, the polystyrene foam board secondary processing method for the building material is used for preparing the polystyrene foam board by crushing, grinding, screening and filtering impurities, heating and melting, cooling and forming polystyrene raw materials, adding different functional additives and pumping protective gas into polystyrene melt to improve the corrosion resistance and reduce the weight of the polystyrene foam board, and cutting, waterproofing and forming a protective film layer on the polystyrene foam board, so that the polystyrene foam board has good waterproof performance and is convenient to be assembled and spliced randomly, the manufacturing difficulty and the manufacturing cost are reduced, and the mechanical strength and the heat preservation performance are improved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. The secondary processing method of the polystyrene foam board for the building material is characterized by comprising the following steps:
step S1, crushing and grinding the polystyrene raw material to obtain polystyrene powder, and screening and filtering impurities of the polystyrene powder to obtain polystyrene powder meeting the predetermined particle size condition;
step S2, placing the polystyrene powder in a protective atmosphere environment for heating and melting treatment to obtain a corresponding polystyrene melt, and simultaneously adding a functional additive to the polystyrene melt and pumping protective gas to obtain a pretreated polystyrene melt;
step S3, cooling and molding the pretreated polystyrene melt to obtain a polystyrene foam board, and cutting the polystyrene foam board to obtain the polystyrene foam board with a preset shape and/or a preset size;
step S4, the polystyrene foam board after the cutting processing is processed by waterproof processing and protective film layer forming processing, thereby forming the polystyrene foam board for building materials;
in step S1, the crushing and grinding of the polystyrene raw material to obtain the polystyrene powder specifically includes:
step S101, impact crushing treatment is carried out on the polystyrene raw material, so that the polystyrene raw material is converted into a plurality of polystyrene blocks with irregular shapes;
step S102, grinding the polystyrene block at a constant speed so as to grind the polystyrene block into polystyrene powder, wherein the grinding speed of the constant-speed grinding is 20-60 r/S;
step S103, acquiring an image of the polystyrene powder in the constant-speed grinding treatment, determining the actual reflectivity of the polystyrene packaging body according to the image, comparing the actual reflectivity with a preset reflectivity threshold, if the actual reflectivity is lower than the preset reflectivity threshold, increasing the grinding speed of the constant-speed grinding treatment, and otherwise, keeping the current grinding speed of the constant-speed grinding treatment unchanged;
wherein, in the step S1, the step of screening impurities and filtering the polystyrene powder to obtain the polystyrene powder satisfying the predetermined particle size condition specifically comprises
Step S104, after the polystyrene powder is subjected to screen screening and filtering treatment, periodically scanning structured light in a light and shade stripe form on the polystyrene powder, and acquiring light intensity distribution information formed after the polystyrene powder reflects and/or refracts the structured light;
step S105, determining the average particle size of the polystyrene powder particles in the polystyrene powder according to the light intensity distribution information, comparing the average particle size with a preset particle size threshold, stopping the screen screening and filtering if the average particle size is smaller than or equal to the preset particle size threshold, or continuing the screen screening and filtering until the average particle size is smaller than or equal to the preset particle size threshold.
2. The secondary processing method of polystyrene foam board for building material as recited in claim 1, characterized in that:
in step S2, the step of placing the polystyrene powder in a protective atmosphere environment to perform a heating melting process to obtain a corresponding polystyrene melt specifically includes:
step S201, placing the polystyrene powder in a melting furnace with a flowing nitrogen protection atmosphere environment for heating and melting treatment, wherein the flow rate of nitrogen in the flowing nitrogen protection atmosphere environment is 2m3/s-15m3/s；
Step S202, in the process of heating and melting treatment, firstly, preheating the polystyrene powder at 100-170 ℃, and uniformly stirring the polystyrene powder in the process of preheating treatment, wherein the duration of the preheating treatment is 10-30 min, and the corresponding stirring speed is 30-60 r/S;
step S203, after the pre-heating treatment, performing secondary heating treatment on the polystyrene powder at 200-260 ℃ so as to convert the polystyrene powder into a polystyrene melt, and uniformly stirring the polystyrene melt in the secondary heating treatment process, wherein the corresponding stirring speed is 20-80 r/S.
3. The secondary processing method of polystyrene foam board for building material as recited in claim 2, characterized in that:
in the step S2, adding a functional additive to the polystyrene melt and pumping a shielding gas to obtain a pretreated polystyrene melt specifically includes:
step S204, adding an anti-ultraviolet additive, an antioxidant and titanium oxide particles to the polystyrene melt, wherein the weight ratio of the polystyrene melt to the anti-ultraviolet additive to the antioxidant to the titanium oxide particles is 100-: 0.1-0.5: 0.2-0.8: 0.2-0.6;
step S205, in the process of uniformly stirring the polystyrene melt, pumping nitrogen into the polystyrene melt so as to uniformly form a plurality of nitrogen bubbles inside the polystyrene melt, thereby obtaining the pretreated polystyrene melt, wherein the pumping rate of the nitrogen is 0.1m3/s-0.8m3/s。
4. The secondary processing method of polystyrene foam board for building material as recited in claim 1, characterized in that:
in the step S3, the cooling process and the molding process are performed on the pretreated polystyrene melt, thereby obtaining a polystyrene foam board body including:
step S301, carrying out primary natural cooling treatment on the pretreated polystyrene melt, so as to cool the temperature of the pretreated polystyrene melt to 120-160 ℃;
step S302, carrying out co-extrusion molding treatment on the polystyrene melt subjected to the first natural cooling treatment to generate a polystyrene foam board with a preset thickness, wherein the thickness of the polystyrene foam board is 5-100 cm;
step S303, performing a second natural cooling treatment on the polystyrene foam board, thereby cooling the polystyrene foam board to a normal temperature state.
5. The secondary processing method of polystyrene foam board for building material as recited in claim 4, characterized in that:
in step S3, the cutting process for the polystyrene foam board to obtain the polystyrene foam board body with the preset shape and/or the preset size includes:
step S304, cutting the polystyrene foam board to obtain a plurality of rectangular polystyrene foam boards with different lengths and different widths, wherein the length is 20cm-150cm, and the width is 20cm-150 cm;
step S305, cutting the side surfaces around the rectangular polystyrene foam board to form a periodic rectangular tooth socket structure on the side surfaces, so that different rectangular polystyrene foam boards can be spliced and combined through the rectangular tooth socket structure, wherein the groove depth of the rectangular tooth socket structure is 2cm-5cm, and the groove width is 2cm-5 cm.
6. The secondary processing method of polystyrene foam board for building material as recited in claim 1, characterized in that:
in the step S4, the polystyrene foam board subjected to the cutting and cutting process is subjected to a waterproofing process and a protective film layer molding process, so as to form a polystyrene foam board body for a building material, including:
step S401, coating hydrophobic resin coatings on the upper side surface, the lower side surface and the peripheral side surfaces of the polystyrene foam board subjected to the cutting treatment, and performing ultraviolet irradiation drying curing treatment to form a corresponding waterproof layer, wherein the thickness of the waterproof layer is 1mm-5 mm;
step S402 of forming the protective film layer by applying a hardening resin paint containing (meth) acrylate on the waterproof layers of the upper surface, the lower surface, and the peripheral side surfaces and drying the paint, thereby forming the polystyrene foam board for building materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011246194.5A CN112477047B (en) | 2020-11-10 | 2020-11-10 | Secondary processing method of polystyrene foam board for building material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011246194.5A CN112477047B (en) | 2020-11-10 | 2020-11-10 | Secondary processing method of polystyrene foam board for building material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112477047A CN112477047A (en) | 2021-03-12 |
| CN112477047B true CN112477047B (en) | 2022-03-29 |
Family
ID=74929282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011246194.5A Active CN112477047B (en) | 2020-11-10 | 2020-11-10 | Secondary processing method of polystyrene foam board for building material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112477047B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5122262A (en) * | 1990-01-12 | 1992-06-16 | Summers Thomas W | Separator screen with intermittent vacuum |
| JPH06819A (en) * | 1992-06-19 | 1994-01-11 | Isuzu Motors Ltd | Recycling method of coated plastic |
| CN2310115Y (en) * | 1998-02-17 | 1999-03-10 | 夏良强 | Hard polyurethane foam water-proof thermal-insulating composite board |
| CN104744839A (en) * | 2015-02-07 | 2015-07-01 | 青岛欧克斯新型建材有限公司 | Method for preparing polystyrene extruded sheet from waste plastics |
| CN104877248A (en) * | 2015-05-29 | 2015-09-02 | 遵义荣盛包装材料有限公司 | Recovery process of expandable polystyrene waste boards |
| CN110612178A (en) * | 2018-04-13 | 2019-12-24 | 株式会社大气社 | Automatic grinding system |
| CN111781106A (en) * | 2020-07-11 | 2020-10-16 | 安徽省建筑科学研究设计院 | Mechanism sand vibration measurement system |
-
2020
- 2020-11-10 CN CN202011246194.5A patent/CN112477047B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5122262A (en) * | 1990-01-12 | 1992-06-16 | Summers Thomas W | Separator screen with intermittent vacuum |
| JPH06819A (en) * | 1992-06-19 | 1994-01-11 | Isuzu Motors Ltd | Recycling method of coated plastic |
| CN2310115Y (en) * | 1998-02-17 | 1999-03-10 | 夏良强 | Hard polyurethane foam water-proof thermal-insulating composite board |
| CN104744839A (en) * | 2015-02-07 | 2015-07-01 | 青岛欧克斯新型建材有限公司 | Method for preparing polystyrene extruded sheet from waste plastics |
| CN104877248A (en) * | 2015-05-29 | 2015-09-02 | 遵义荣盛包装材料有限公司 | Recovery process of expandable polystyrene waste boards |
| CN110612178A (en) * | 2018-04-13 | 2019-12-24 | 株式会社大气社 | Automatic grinding system |
| CN111781106A (en) * | 2020-07-11 | 2020-10-16 | 安徽省建筑科学研究设计院 | Mechanism sand vibration measurement system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112477047A (en) | 2021-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100644012B1 (en) | Heat shielding sheet material and its manufacturing method | |
| CN1777563A (en) | Method for the production of glass from a mixture of fused rock glass | |
| CN103741139A (en) | Quick laser cladding device and cladding method of flat metal parts | |
| JP5914288B2 (en) | LAMINATED FILM, OPTICAL LAMINATED FILM, AND DISPLAY DEVICE | |
| CN1087612A (en) | Ultraviolet absorbing green tinted glass | |
| CN1463368A (en) | Optical functional sheet | |
| CN1580831A (en) | Anti-dizzy optical film and its making method | |
| CN112477047B (en) | Secondary processing method of polystyrene foam board for building material | |
| CN107097500A (en) | A kind of reflectance coating printed suitable for ink and preparation method thereof | |
| EP1958008B1 (en) | Reflector with a protective layer made of sol-gel lacquer | |
| CN106145645A (en) | The manufacture method of a kind of glass cover-plate, glass cover-plate and mobile terminal | |
| CN106145641A (en) | The manufacture method of a kind of glass cover-plate, glass cover-plate and mobile terminal | |
| CN105705681B (en) | Method for producing white appearing metal oxide films by locating reflective particles prior to or during an anodization process | |
| CN102409271B (en) | Production method of aluminum alloy sheet | |
| US20130040083A1 (en) | Method for manufacturing magnesium-aluminum alloy casing | |
| US20060054249A1 (en) | Mg or Mg-alloy housing and method for producing the same | |
| CN101903555B (en) | Method for increasing formability of magnesium alloy | |
| CN110684331A (en) | Anti-dazzle diffusion plate and preparation process thereof | |
| CN103724975B (en) | A kind of high light reflectivity PC membrane materials and preparation method thereof | |
| JP5662002B2 (en) | Reflective film for liquid crystal display | |
| TWI589435B (en) | Reflective film and method for manufacturing the same | |
| CN203876328U (en) | Reflector plate | |
| CN106398014A (en) | Method for processing acrylic diffusion plates | |
| CN112519167A (en) | Method for manufacturing building material based on recycling of waste polystyrene foam | |
| CN110951178A (en) | Anti-dazzle plate for improving brightness and manufacturing process thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 415400 No.2 Longgang Road, Jinshi hi tech Industrial Zone, Changde City, Hunan Province Patentee after: Hunan Jiren Residential Industry Co.,Ltd. Address before: 415400 No.2 Longgang Road, Jinshi hi tech Industrial Zone, Changde City, Hunan Province Patentee before: Hunan Jiren residential assembly Construction Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |