CN117565518A - Fireproof composite expansion sheet and preparation method thereof - Google Patents
Fireproof composite expansion sheet and preparation method thereof Download PDFInfo
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- CN117565518A CN117565518A CN202311620964.1A CN202311620964A CN117565518A CN 117565518 A CN117565518 A CN 117565518A CN 202311620964 A CN202311620964 A CN 202311620964A CN 117565518 A CN117565518 A CN 117565518A
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- 239000002131 composite material Substances 0.000 title claims abstract description 75
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 53
- 239000000843 powder Substances 0.000 claims abstract description 34
- -1 polyethylene Polymers 0.000 claims abstract description 19
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 11
- 239000004698 Polyethylene Substances 0.000 claims abstract description 10
- 229920000573 polyethylene Polymers 0.000 claims abstract description 10
- 239000004945 silicone rubber Substances 0.000 claims abstract description 10
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims abstract description 9
- 229920000642 polymer Polymers 0.000 claims abstract description 9
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 8
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 8
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 8
- 239000000853 adhesive Substances 0.000 claims abstract description 7
- 230000001070 adhesive effect Effects 0.000 claims abstract description 7
- 239000004014 plasticizer Substances 0.000 claims abstract description 7
- 239000004831 Hot glue Substances 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 239000006057 Non-nutritive feed additive Substances 0.000 claims abstract description 4
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 4
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 4
- UQLDLKMNUJERMK-UHFFFAOYSA-L di(octadecanoyloxy)lead Chemical compound [Pb+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O UQLDLKMNUJERMK-UHFFFAOYSA-L 0.000 claims abstract description 4
- 239000000945 filler Substances 0.000 claims abstract description 4
- 239000000314 lubricant Substances 0.000 claims abstract description 4
- 239000003381 stabilizer Substances 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims description 72
- 239000000463 material Substances 0.000 claims description 65
- 238000000034 method Methods 0.000 claims description 52
- 238000001514 detection method Methods 0.000 claims description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- 238000003756 stirring Methods 0.000 claims description 31
- 238000005520 cutting process Methods 0.000 claims description 24
- 238000002156 mixing Methods 0.000 claims description 24
- 230000008569 process Effects 0.000 claims description 20
- 238000012545 processing Methods 0.000 claims description 19
- 238000001125 extrusion Methods 0.000 claims description 15
- 239000000047 product Substances 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 13
- 230000008859 change Effects 0.000 claims description 12
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 238000005070 sampling Methods 0.000 claims description 12
- 239000000110 cooling liquid Substances 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 8
- 239000004593 Epoxy Substances 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 239000012752 auxiliary agent Substances 0.000 claims description 6
- 229920001940 conductive polymer Polymers 0.000 claims description 6
- 239000007822 coupling agent Substances 0.000 claims description 6
- 229910044991 metal oxide Inorganic materials 0.000 claims description 6
- 150000004706 metal oxides Chemical class 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000012216 screening Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Natural products OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 239000002033 PVDF binder Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 229920001328 Polyvinylidene chloride Polymers 0.000 claims description 3
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 3
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 3
- 238000009775 high-speed stirring Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 229910052754 neon Inorganic materials 0.000 claims description 3
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000010452 phosphate Substances 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 3
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 claims description 3
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 239000005033 polyvinylidene chloride Substances 0.000 claims description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 3
- 238000007781 pre-processing Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 235000012424 soybean oil Nutrition 0.000 claims description 3
- 239000003549 soybean oil Substances 0.000 claims description 3
- 239000012257 stirred material Substances 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 230000009897 systematic effect Effects 0.000 claims description 3
- 229920001897 terpolymer Polymers 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 3
- 238000009966 trimming Methods 0.000 claims description 3
- 238000012795 verification Methods 0.000 claims description 3
- 230000009970 fire resistant effect Effects 0.000 claims 1
- 239000004088 foaming agent Substances 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 13
- 239000004814 polyurethane Substances 0.000 description 7
- 229920002635 polyurethane Polymers 0.000 description 6
- 238000009413 insulation Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 1
- 229920001730 Moisture cure polyurethane Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 229920005560 fluorosilicone rubber Polymers 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N urethane group Chemical group NC(=O)OCC JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08J9/06—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 chemical blowing agent
- C08J9/10—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 chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
-
- 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
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B29/007—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to a foam layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/06—Layered products comprising a layer of paper or cardboard specially treated, e.g. surfaced, parchmentised
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B41/00—Arrangements for controlling or monitoring lamination processes; Safety arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B2038/0052—Other operations not otherwise provided for
- B32B2038/0076—Curing, vulcanising, cross-linking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/025—Polyolefin
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—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
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- 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
- C08J2423/06—Polyethene
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of composite expansion sheets, and discloses a fireproof composite expansion sheet, which consists of a high-sealing expansion sheet, a thermosensitive adhesive coated on one surface of the sheet and wax paper compounded with the thermosensitive adhesive, wherein the preparation raw materials comprise, by weight, 20-25 parts of EVA, 20-25 parts of AC foaming agent, 55-65 parts of lead stearate, 1-3 parts of polyethylene wax, 7-10 parts of polyvinyl chloride, 3-5 parts of ethylene propylene diene monomer rubber, 5-8 parts of silicone rubber, 0.2-1.5 parts of antioxidant, 12-17 parts of polymer, 0.5-1 part of thermosensitive organic-inorganic composite powder, 0.3-1 part of plasticizer, stabilizer, lubricant, hot melt adhesive, processing aid and filler.
Description
Technical Field
The invention relates to the technical field of composite expansion sheets, in particular to a fireproof composite expansion sheet and a preparation method thereof.
Background
The existing general domestic manufactured sedan is provided with gaps and cavities between various metal parts and nonmetal parts for assembling the sedan, so that the sedan generates vibration and noise during running, thereby influencing the comfort of the sedan, simultaneously causing noise pollution to the surrounding environment, and limiting the manufacturing level of the domestic sedan and the further improvement of the grade of the sedan.
In the prior art, the temperature inside the equipment during the mixing and stirring process is often detected by a separate temperature detection device.
However, in the actual use process, because when the materials are stirred and mixed in a large batch, the temperature of the inner side of the high-speed stirrer, which is close to the heating source end, and the temperature of the inner side of the high-speed stirrer, which is far away from the heating source end, always have certain difference, so that the reaction rate between materials of the high-speed stirrer can be influenced by the difference of the temperature in the heating and stirring process, and therefore, in order to ensure the sufficient mutual reaction between the materials in the stirring and mixing process, people often need to additionally increase the time of the stirring and mixing process so as to ensure the sufficient mutual reaction between the internal materials.
Disclosure of Invention
In order to make up for the defects, the invention provides a fireproof composite expansion sheet and a preparation method thereof, and aims to solve the problem that in the prior art, materials close to a heat source end and materials far from the heat source end have certain difference in temperature in the mixing process.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the preparation raw materials comprise, by weight, 20-25 parts of EVA (ethylene-vinyl acetate copolymer), 65-75 parts of lead stearate, 1-3 parts of polyethylene wax, 7-10 parts of polyvinyl chloride, 3-5 parts of ethylene propylene diene monomer rubber, 5-8 parts of silicone rubber, 0.2-1.5 parts of antioxidant, 12-17 parts of polymer, 0.5-1 part of thermosensitive organic-inorganic composite powder, and 0.3-1 part of plasticizer, stabilizer, lubricant, hot melt adhesive, processing aid and filler.
The silicone rubber is a kneaded silicone rubber, and examples of the kneaded silicone rubber include methyl silicone rubber, methyl vinyl phenyl silicone rubber, and fluorosilicone rubber.
The silicone rubber and the ethylene propylene diene monomer rubber have excellent heat aging performance, but the mechanical property of the silicone rubber is poor and the price is high; ethylene propylene diene monomer rubber has low vulcanization speed, poor self-adhesion and mutual adhesion and poor processability. Therefore, the two materials are blended to make up for the defects of each material, the product with the comprehensive performance superior to that of a single rubber type is prepared, and the existence of the silicon rubber solves the problems that the strength of a polyvinyl chloride polymer melt layer is low and the polyvinyl chloride polymer melt layer cannot be effectively expanded.
As a further description of the above technical solution:
the thermosensitive organic-inorganic composite powder is obtained by reacting metal powder, metal oxide powder, conductive polymer powder, a coupling agent and an auxiliary agent, wherein the polymer can be any one of polyethylene, polyethylene/vinyl acetate EVA, ethylene propylene terpolymer EPDM, chloroprene rubber, polypropylene, polyvinyl chloride, polyvinylidene chloride, polytetrafluoroethylene and polyvinylidene fluoride, and the plasticizer is any one of phthalate, polyester, citric acid ester, phosphate and epoxy soybean oil.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the method comprises the following steps:
s1: material selection
Determining the specific material of the added material according to the performance requirement of the actual high-sealing composite expansion sheet;
s2: material handling
Each material is pretreated, and the thermosensitive organic-inorganic composite powder which needs to be premixed is mixed;
s3: stirring and mixing
Stirring and processing the materials to be stirred and mixed by using a high-speed stirrer;
s4: extrusion molding
Extruding the stirred material at a certain temperature by using an extruder;
s5: cooling and solidifying
Placing the expansion sheet with the completed plasticity at a water cooling circulation device, and cooling the expansion sheet by a water cooling mode;
s6: cutting and shaping
Cutting the expansion sheet into a desired shape and size using a cutting tool or a forming machine;
s7: sampling detection
And taking out the generated expansion sheets by adopting a sampling method to perform independent performance detection, and judging the performance of the expansion sheets in the batch according to the detection data.
As a further description of the above technical solution:
the S1 material selection is mainly used for determining the raw material composition of the processing batch, and comprises the following steps:
s101: performance index of finished product
Determining an actual finished product performance requirement index, and taking the actual finished product performance requirement index as a detection index in S7;
s102: raw material inspection
Sampling and detecting the raw materials according to the content marks of the components in the raw materials, and determining whether the raw materials meet the production and processing requirements;
s103: raw material proportioning
Determining the specific dosage of each component in the raw materials according to the actual finished product requirements;
s104: alignment treatment
Raw materials are sequentially discharged to a charging frame in the order of adding raw materials into the high-speed mixer.
As a further description of the above technical solution:
the S2 material treatment is used for preprocessing raw materials so that the raw materials can meet the stirring and mixing requirements, and comprises the following steps:
s201: index specification
Determining the throwing requirements of each group of materials, including the temperature and the size state of raw material particles;
s202: raw material preheating
Preheating the raw materials by adopting a heating stirrer, and reducing caking generated after moisture absorption in the powder raw materials;
s203: vibration screening
Screening the granularity of the raw materials by using a vibrating screen with standard mesh number, and crushing the materials which do not accord with the granularity;
s204: mixing processing
Sequentially adding metal powder, metal oxide powder, conductive polymer powder, coupling agent and auxiliary agent material into a reaction kettle, and mixing at a stirring speed of 1000-2000 rpm for 2-5 minutes to obtain mixed thermosensitive organic-inorganic composite powder.
As a further description of the above technical solution:
the step S3 of stirring and mixing is to monitor the temperature and the reaction state in the stirring process in real time, and comprises the following steps:
s301: temperature control
Setting a heating component and a cooling component in the high-speed mixer, and controlling the working states of the heating component and the cooling component through a temperature control terminal;
s302: temperature monitoring
An infrared temperature measuring device is arranged at the high-speed stirrer to monitor the temperature of the area inside the high-speed stirring equipment in real time;
s303: graph transformation
Generating a corresponding time-temperature broken line chart according to the temperature detection result of the infrared temperature measuring device;
s304: air pressure control
The air pressure state inside the equipment is monitored in real time through the air pressure detection device, and neon is filled into the equipment to supplement air pressure to a standard range when the air pressure inside the equipment is insufficient.
As a further description of the above technical solution:
the S4 extrusion molding is mainly used for injecting the mixed material after stirring and mixing into a die to perform preliminary molding extrusion on the shape of the mixed material:
s401: vacuum material injection
Vacuumizing the material injection port through a vacuum machine, and ensuring that the air pressure at the material injection port is-0.04 Mpa;
s402: device tuning
Setting the screw rotation speed of the extruder, and keeping the internal mixed material to be extruded at a constant speed;
s403: temperature detection
The extrusion temperature of the extruder is controlled and the temperature during extrusion is kept to meet the requirements.
As a further description of the above technical solution:
in the S5 cooling solidification, the water cooling state is controlled mainly by controlling the temperature of water cooling liquid in the water cooling pipe, and the method comprises the following steps:
s501: cooling detection
Detecting the temperature of the composite expansion sheet in the cooling mould through an infrared temperature measuring device, and detecting the temperature of cooling liquid in the water cooling device through a control end of the water cooling device;
s502: curve setting
Setting a predicted cooling temperature curve according to the actual cooling temperature requirement, and generating a corresponding temperature change curve for the detected temperature of the composite expansion sheet by the infrared temperature measuring device;
s503: curve comparison
The processing system compares the set temperature curve C_1 with the temperature curve C_2 obtained by time detection, and the similarity is obtained by calculating Euclidean distances among n characteristic points in the two groups of curves, wherein the algorithm formula comprises the following steps:
[C_1={(x_{1,1},y_{1,1}),(x_{1,2},y_{1,2}),\ldots,(x_{1,n},y_{1,n})}]；
[C_2={(x_{2,1},y_{2,1}),(x_{2,2},y_{2,2}),\ldots,(x_{2,n},y_{2,n})}]；
calculating the difference values on the horizontal axis and the vertical axis to obtain ((\Deltax_i, \Deltay_i)), then carrying out square operation on the difference values of each point to obtain ((\Deltax_i)/(2) and ((\Deltai)/(2), adding the squared difference values to obtain (\sum { i=1 } { n } (\Deltax_i)/(2+ (\Deltai)/(2)), and finally obtaining the final Euclidean distance by taking the square root of the value, wherein the smaller the Euclidean distance is, the more similar the curve is represented, and the larger the reverse value is, the more dissimilar the curve is represented.
S504: cooling control
And finally, judging whether the current cooling state meets the set temperature change requirement according to curve similarity data obtained by Euclidean distance, and if the similarity is smaller than a set threshold value, performing systematic intervention on the cooling process of the water cooling device by controlling the temperature of the internal cooling liquid.
As a further description of the above technical solution:
and S6, carrying out standardized cutting processing on the cooled composite expansion sheet shape in cutting and forming, wherein the method comprises the following steps of:
s601: standard modeling
Establishing a standardized composite expansion sheet model through three-dimensional software, and introducing the standardized composite expansion sheet model into a system;
s602: automated cutting
Trimming and cutting is carried out on the appearance of the composite expansion sheet obtained through modeling through automatic cutting equipment.
As a further description of the above technical solution:
the S7 sampling detection is performed according to the standard of 100:3, and comprises the following steps:
s701: appearance verification
Detecting the appearance of the finished composite expansion sheet through model matching, and detecting the edge burr degree of the finished composite expansion sheet;
s702: coefficient of expansion
The expansion coefficient parameter of the composite expansion sheet is detected, and the specific expansion coefficient alpha is calculated as follows:
[α=\frac{{\DeltaL}}{{L_0\cdot\DeltaT}}]；
wherein:
(α) is the linear expansion coefficient (in units of 1/degree centigrade or 1/Kelvin);
(\DeltaL) is the length variation (typically in meters);
(l_0) is the length of the object at the initial temperature (typically in meters);
(\DeltaT) is the amount of temperature change (degrees Celsius or Kelvin);
s703: impact pressure detection
Clamping and fixing the composite expansion sheet, and detecting the impact resistance and the bearing capacity of the composite expansion sheet by using equipment with adjustable pressure outside;
s704: report generation
And (3) generating a corresponding detection report according to the data obtained by actual detection, and comparing the detection report with the performance requirement set in the step (S1) so as to obtain the final product quality judgment.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the temperature control assembly arranged in the processing process of stirring and mixing raw materials is used for monitoring the temperature conditions of each partition in the high-speed stirrer in real time, wherein the temperature control assembly comprises the upper end, the middle part and the lower end of the high-speed stirrer, and corresponding temperature change curves are generated according to the detection results and fed back to the control terminal, so that people can know the temperature change conditions of each area in the equipment in real time through the generated chart data, and the quality reduction of the composite expansion sheet caused by uneven heating is avoided.
2. In the invention, the cooling efficiency is improved in a water cooling mode, meanwhile, the temperature of the cooling liquid in the water cooling device is required to control the water cooling efficiency in the water cooling process, in addition, the internal temperature of the cooled composite expansion sheet is detected by the infrared temperature measuring device in the water cooling process, and the cooling efficiency of the water cooling device is controlled by the difference degree between the actual temperature curve and the set temperature change curve, so that the influence on the internal structure of the composite expansion sheet due to too fast cooling is avoided.
3. According to the invention, the materials which are mixed and stirred are injected into the extruder in a vacuum material injection mode, the vacuum stability in the material injection process is maintained, and when the material injection is completed, the feeding port of the extruder is closed and the air pressure is recovered, so that the probability that air bubbles are generated in the materials when external air enters the materials in the transmission process is reduced, and the overall usability of the finished composite expansion sheet is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of the method of the present invention;
FIG. 2 is a flow chart of the method S1 of the present invention;
FIG. 3 is a flow chart of the method S2 of the present invention;
FIG. 4 is a flow chart of the method S3 of the present invention;
FIG. 5 is a flow chart of the method S4 of the present invention;
FIG. 6 is a flow chart of the method S5 of the present invention;
FIG. 7 is a flow chart of the method S6 of the present invention;
FIG. 8 is a flow chart of the method S7 of the present invention.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The present invention provides an embodiment: the fireproof composite expansion sheet comprises, by weight, 20-25 parts of EVA, 20-25 parts of AC foaming agent, 65-75 parts of lead stearate, 1-3 parts of polyethylene wax, 0.2-1.5 parts of antioxidant, 12-17 parts of polymer, 0.5-1 part of thermosensitive organic-inorganic composite powder, and 0.3-1 part of plasticizer, stabilizer, lubricant, hot melt adhesive, processing aid and filler.
Specifically, the thermosensitive organic-inorganic composite powder is prepared by reacting metal powder, metal oxide powder, conductive polymer powder, a coupling agent and an auxiliary agent, wherein the polymer can be any one of polyethylene, polyethylene/vinyl acetate EVA, ethylene propylene terpolymer EPDM, chloroprene rubber, polypropylene, polyvinyl chloride, polyvinylidene chloride, polytetrafluoroethylene and polyvinylidene fluoride, and the plasticizer is any one of phthalate, polyester, citrate, phosphate and epoxidized soybean oil.
The hot melt adhesive used in the technical scheme adopts hydroxyl-terminated polybasic epoxy compound and isocyanate-terminated polyurethane prepolymer to prepare epoxy polyurethane, and then the epoxy polyurethane is prepared with polyamine compound to form polyurethane adhesive, so that the polyurethane adhesive can be fused, and the epoxy polyurethane generally has good mechanical properties including strength and toughness due to the combination of the characteristics of polyurethane and epoxy resin, and simultaneously, the epoxy polyurethane generally shows excellent adhesiveness due to the inclusion of urethane groups and epoxy groups.
Referring to fig. 1-8, the present invention provides an embodiment: a preparation method of a fireproof composite expansion sheet comprises the following steps:
the method comprises the following steps:
s1: material selection
Determining the specific material of the added material according to the performance requirement of the actual high-sealing composite expansion sheet;
s2: material handling
Each material is pretreated, and the thermosensitive organic-inorganic composite powder which needs to be premixed is mixed;
s3: stirring and mixing
Stirring and processing the materials to be stirred and mixed by using a high-speed stirrer;
s4: extrusion molding
Extruding the stirred material at a certain temperature by using an extruder;
s5: cooling and solidifying
Placing the expansion sheet with the completed plasticity at a water cooling circulation device, and cooling the expansion sheet by a water cooling mode;
s6: cutting and shaping
Cutting the expansion sheet into a desired shape and size using a cutting tool or a forming machine;
s7: sampling detection
And taking out the generated expansion sheets by adopting a sampling method to perform independent performance detection, and judging the performance of the expansion sheets in the batch according to the detection data.
The S1 material selection is mainly used for determining the raw material composition of the processing batch and comprises the following steps:
s101: performance index of finished product
Determining an actual finished product performance requirement index, and taking the actual finished product performance requirement index as a detection index in S7;
s102: raw material inspection
Sampling and detecting the raw materials according to the content marks of the components in the raw materials, and determining whether the raw materials meet the production and processing requirements;
s103: raw material proportioning
Determining the specific dosage of each component in the raw materials according to the actual finished product requirements;
s104: alignment treatment
Raw materials are sequentially discharged to a charging frame in the order of adding raw materials into the high-speed mixer.
And S2, preprocessing raw materials in the material treatment to enable the raw materials to meet the stirring and mixing requirements, wherein the method comprises the following steps of:
s201: index specification
Determining the throwing requirements of each group of materials, including the temperature and the size state of raw material particles;
s202: raw material preheating
Preheating the raw materials by adopting a heating stirrer, and reducing caking generated after moisture absorption in the powder raw materials;
s203: vibration screening
Screening the granularity of the raw materials by using a vibrating screen with standard mesh number, and crushing the materials which do not accord with the granularity;
s204: mixing processing
Sequentially adding metal powder, metal oxide powder, conductive polymer powder, coupling agent and auxiliary agent material into a reaction kettle, and mixing at a stirring speed of 1000-2000 rpm for 2-5 minutes to obtain mixed thermosensitive organic-inorganic composite powder.
S3, monitoring the temperature and the reaction state in the stirring process in real time in the stirring and mixing process, wherein the method comprises the following steps of:
s301: temperature control
Setting a heating component and a cooling component in the high-speed mixer, and controlling the working states of the heating component and the cooling component through a temperature control terminal;
when the infrared temperature measuring device detects that the temperature difference exceeding the set threshold exists in the stirring and mixing device, the system accelerates the stirring speed of the stirring device, and meanwhile, the temperature of each area in the stirring device tends to be the same by controlling the temperature rising device and the temperature reducing device of the independent blocks in the stirring device, so that the reaction speed difference among materials caused by uneven temperature is avoided.
S302: temperature monitoring
An infrared temperature measuring device is arranged at the high-speed stirrer to monitor the temperature of the area inside the high-speed stirring equipment in real time;
s303: graph transformation
Generating a corresponding time-temperature broken line chart according to the temperature detection result of the infrared temperature measuring device;
s304: air pressure control
The air pressure state inside the equipment is monitored in real time through the air pressure detection device, and neon is filled into the equipment to supplement air pressure to a standard range when the air pressure inside the equipment is insufficient.
And S4, in extrusion molding, the method is mainly used for injecting the stirred and mixed mixture into a die to perform preliminary molding extrusion on the shape of the mixture:
s401: vacuum material injection
Vacuumizing the material injection port through a vacuum machine, and ensuring that the air pressure at the material injection port is-0.04 Mpa;
s402: device tuning
Setting the screw rotation speed of the extruder, and keeping the internal mixed material to be extruded at a constant speed;
s403: temperature detection
The extrusion temperature of the extruder is controlled and the temperature during extrusion is kept to meet the requirements.
And S5, controlling the water cooling state mainly by controlling the temperature of water cooling liquid in the water cooling pipe during cooling and solidification, wherein the method comprises the following steps of:
s501: cooling detection
Detecting the temperature of the composite expansion sheet in the cooling mould through an infrared temperature measuring device, and detecting the temperature of cooling liquid in the water cooling device through a control end of the water cooling device;
in the detection process, different characteristic areas are set according to the internal shapes of different stirring and mixing devices, the temperature of the center of each partition is detected through an infrared temperature measuring device, and the average temperature of the area is obtained and used as a block temperature judgment standard.
S502: curve setting
Setting a predicted cooling temperature curve according to the actual cooling temperature requirement, and generating a corresponding temperature change curve for the detected temperature of the composite expansion sheet by the infrared temperature measuring device;
s503: curve comparison
The processing system compares the set temperature curve C_1 with the temperature curve C_2 obtained by time detection, and the similarity is obtained by calculating Euclidean distances among n characteristic points in the two groups of curves, wherein the algorithm formula comprises the following steps:
[C_1={(x_{1,1},y_{1,1}),(x_{1,2},y_{1,2}),\ldots,(x_{1,n},y_{1,n})}]；
[C_2={(x_{2,1},y_{2,1}),(x_{2,2},y_{2,2}),\ldots,(x_{2,n},y_{2,n})}]；
calculating the difference values on the horizontal axis and the vertical axis to obtain ((\Deltax_i, \Deltay_i)), then carrying out square operation on the difference values of each point to obtain ((\Deltax_i)/(2) and ((\Deltai)/(2), adding the squared difference values to obtain (\sum { i=1 } { n } (\Deltax_i)/(2+ (\Deltai)/(2)), and finally obtaining the final Euclidean distance by taking the square root of the value, wherein the smaller the Euclidean distance is, the more similar the curve is represented, and the larger the reverse value is, the more dissimilar the curve is represented.
By comparing the calculated value with a threshold value set in the system, when the Euclidean distance value is smaller than the threshold value, the default cooling process accords with the set curve, and when the Euclidean distance value is larger than the threshold value, the system controls the water cooling device to adjust the temperature of the internal cooling liquid according to the difference value between the Euclidean distance value and the preset value, thereby improving or reducing the water cooling efficiency and keeping the water cooling device to finish water cooling and cooling in a more gentle process
S504: cooling control
And finally, judging whether the current cooling state meets the set temperature change requirement according to curve similarity data obtained by Euclidean distance, and if the similarity is smaller than a set threshold value, performing systematic intervention on the cooling process of the water cooling device by controlling the temperature of the internal cooling liquid.
And S6, carrying out standardized cutting processing on the cooled composite expansion sheet shape in cutting and forming, wherein the method comprises the following steps of:
s601: standard modeling
Establishing a standardized composite expansion sheet model through three-dimensional software, and introducing the standardized composite expansion sheet model into a system;
s602: automated cutting
Trimming and cutting is carried out on the appearance of the composite expansion sheet obtained through modeling through automatic cutting equipment.
The S7 sampling detection is performed according to the standard of 100:3, and comprises the following steps:
s701: appearance verification
Detecting the appearance of the finished composite expansion sheet through model matching, and detecting the edge burr degree of the finished composite expansion sheet;
s702: coefficient of expansion
The expansion coefficient parameter of the composite expansion sheet is detected, and the specific expansion coefficient alpha is calculated as follows:
[α=\frac{{\DeltaL}}{{L_0\cdot\DeltaT}}]；
wherein:
(α) is the linear expansion coefficient (in units of 1/degree centigrade or 1/Kelvin);
(\DeltaL) is the length variation (typically in meters);
(l_0) is the length of the object at the initial temperature (typically in meters);
(\DeltaT) is the amount of temperature change (degrees Celsius or Kelvin);
when the expansion coefficient is detected, the length variation of the composite expansion sheet is required to be obtained by changing the ambient temperature, and meanwhile, the length variation is a generalized length variation and comprises length, width and thickness data, so that the linear expansion coefficient is calculated according to the variation state of the whole volume of the composite expansion sheet, the obtained linear expansion coefficient value is ensured to be more accurate, and the value can be used as a reference standard for judging the quality of the composite expansion sheet.
S703: impact pressure detection
Clamping and fixing the composite expansion sheet, and detecting the impact resistance and the bearing capacity of the composite expansion sheet by using equipment with adjustable pressure outside;
s704: report generation
And (3) generating a corresponding detection report according to the data obtained by actual detection, and comparing the detection report with the performance requirement set in the step (S1) so as to obtain the final product quality judgment.
According to GB14907, 4 layers of expansion sheets are stuck on the surface of Q235 steel with the thickness of 500 multiplied by 6mm, and hot melt adhesives in raw materials are used as adhesives, so that the total thickness of the product reaches 19.1mm. And the heat insulation efficiency is tested by taking the heat insulation efficiency as a standard, the time for the average temperature of the surface of the base material to reach 500 ℃ is 111 minutes, and the heat insulation material has very good fireproof heat insulation effect.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (11)
1. A fireproof composite expansion sheet comprises a high-sealing expansion sheet, a heat-sensitive adhesive coated on one surface of the sheet and waxed paper compounded with the heat-sensitive adhesive; the method is characterized in that: the preparation raw materials comprise, by weight, 20-25 parts of EVA (ethylene-vinyl acetate copolymer), 65-75 parts of lead stearate, 1-3 parts of polyethylene wax, 7-10 parts of polyvinyl chloride, 3-5 parts of ethylene propylene diene monomer rubber, 5-8 parts of silicone rubber, 0.2-1.5 parts of antioxidant, 12-17 parts of polymer, 0.5-1 part of thermosensitive organic-inorganic composite powder, and 0.3-1 part of plasticizer, stabilizer, lubricant, hot melt adhesive, processing aid and filler.
2. A fire resistant composite intumescent sheet as claimed in claim 1, wherein: the thermosensitive organic-inorganic composite powder is obtained by reacting metal powder, metal oxide powder, conductive polymer powder, a coupling agent and an auxiliary agent, wherein the polymer can be any one of polyethylene, polyethylene/vinyl acetate EVA, ethylene propylene terpolymer EPDM, chloroprene rubber, polypropylene, polyvinyl chloride, polyvinylidene chloride, polytetrafluoroethylene and polyvinylidene fluoride, and the plasticizer is any one of phthalate, polyester, citric acid ester, phosphate and epoxy soybean oil.
3. The method for preparing the fireproof composite expansion sheet according to claim 1, wherein: the method comprises the following steps:
s1: material selection
Determining the specific material of the added material according to the performance requirement of the actual high-sealing composite expansion sheet;
s2: material handling
Each material is pretreated, and the thermosensitive organic-inorganic composite powder which needs to be premixed is mixed;
s3: stirring and mixing
Stirring and processing the materials to be stirred and mixed by using a high-speed stirrer;
s4: extrusion molding
Extruding the stirred material at a certain temperature by using an extruder;
s5: cooling and solidifying
Placing the expansion sheet with the completed plasticity at a water cooling circulation device, and cooling the expansion sheet by a water cooling mode;
s6: cutting and shaping
Cutting the expansion sheet into a desired shape and size using a cutting tool or a forming machine;
s7: sampling detection
And taking out the generated expansion sheets by adopting a sampling method to perform independent performance detection, and judging the performance of the expansion sheets in the batch according to the detection data.
4. The method for preparing the fireproof composite expansion sheet according to claim 1, wherein: the S1 material selection is mainly used for determining the raw material composition of the processing batch, and comprises the following steps:
s101: performance index of finished product
Determining an actual finished product performance requirement index, and taking the actual finished product performance requirement index as a detection index in S7;
s102: raw material inspection
Sampling and detecting the raw materials according to the content marks of the components in the raw materials, and determining whether the raw materials meet the production and processing requirements;
s103: raw material proportioning
Determining the specific dosage of each component in the raw materials according to the actual finished product requirements;
s104: alignment treatment
Raw materials are sequentially discharged to a charging frame in the order of adding raw materials into the high-speed mixer.
5. The method for preparing the fireproof composite expansion sheet according to claim 1, wherein: the S2 material treatment is used for preprocessing raw materials so that the raw materials can meet the stirring and mixing requirements, and comprises the following steps:
s201: index specification
Determining the throwing requirements of each group of materials, including the temperature and the size state of raw material particles;
s202: raw material preheating
Preheating the raw materials by adopting a heating stirrer, and reducing caking generated after moisture absorption in the powder raw materials;
s203: vibration screening
Screening the granularity of the raw materials by using a vibrating screen with standard mesh number, and crushing the materials which do not accord with the granularity;
s204: mixing processing
Sequentially adding metal powder, metal oxide powder, conductive polymer powder, coupling agent and auxiliary agent material into a reaction kettle, and mixing at a stirring speed of 1000-2000 rpm for 2-5 minutes to obtain mixed thermosensitive organic-inorganic composite powder.
6. The method for preparing the fireproof composite expansion sheet according to claim 1, wherein: the step S3 of stirring and mixing is to monitor the temperature and the reaction state in the stirring process in real time, and comprises the following steps:
s301: temperature control
Setting a heating component and a cooling component in the high-speed mixer, and controlling the working states of the heating component and the cooling component through a temperature control terminal;
s302: temperature monitoring
An infrared temperature measuring device is arranged at the high-speed stirrer to monitor the temperature of the area inside the high-speed stirring equipment in real time;
s303: graph transformation
Generating a corresponding time-temperature broken line chart according to the temperature detection result of the infrared temperature measuring device;
s304: air pressure control
The air pressure state inside the equipment is monitored in real time through the air pressure detection device, and neon is filled into the equipment to supplement air pressure to a standard range when the air pressure inside the equipment is insufficient.
7. The method for preparing the fireproof composite expansion sheet according to claim 1, wherein: the S4 extrusion molding is mainly used for injecting the mixed material after stirring and mixing into a die to perform preliminary molding extrusion on the shape of the mixed material:
s401: vacuum material injection
Vacuumizing the material injection port through a vacuum machine, and ensuring that the air pressure at the material injection port is-0.04 Mpa;
s402: device tuning
Setting the screw rotation speed of the extruder, and keeping the internal mixed material to be extruded at a constant speed;
s403: temperature monitoring
The extrusion temperature of the extruder is controlled and the temperature during extrusion is kept to meet the requirements.
8. The method for preparing the fireproof composite expansion sheet according to claim 1, wherein: in the S5 cooling solidification, the water cooling state is controlled mainly by controlling the temperature of water cooling liquid in the water cooling pipe, and the method comprises the following steps:
s501: cooling detection
Detecting the temperature of the composite expansion sheet in the cooling mould through an infrared temperature measuring device, and detecting the temperature of cooling liquid in the water cooling device through a control end of the water cooling device;
s502: curve setting
Setting a predicted cooling temperature curve according to the actual cooling temperature requirement, and generating a corresponding temperature change curve for the detected temperature of the composite expansion sheet by the infrared temperature measuring device;
s503: curve comparison
The processing system compares the set temperature curve C_1 with the temperature curve C_2 obtained by time detection, and the similarity is obtained by calculating Euclidean distances among n characteristic points in the two groups of curves, wherein the algorithm formula comprises the following steps:
[C_1={(x_{1,1},y_{1,1}),(x_{1,2},y_{1,2}),\ldots,(x_{1,n},y_{1,n})}]；
[C_2={(x_{2,1},y_{2,1}),(x_{2,2},y_{2,2}),\ldots,(x_{2,n},y_{2,n})}]；
calculating the difference values on the horizontal axis and the vertical axis to obtain ((\Deltax_i, \Deltay_i)), then carrying out square operation on the difference values of each point to obtain ((\Deltax_i)/(2) and ((\Deltai)/(2), adding the squared difference values to obtain (\sum { i=1 } { n } (\Deltax_i)/(2+ (\Deltai)/(2)), and finally obtaining the final Euclidean distance by taking the square root of the value, wherein the smaller the Euclidean distance is, the more similar the curve is represented, and the larger the reverse value is, the more dissimilar the curve is represented.
S504: cooling control
And finally, judging whether the current cooling state meets the set temperature change requirement according to curve similarity data obtained by Euclidean distance, and if the similarity is smaller than a set threshold value, performing systematic intervention on the cooling process of the water cooling device by controlling the temperature of the internal cooling liquid.
10. The method for preparing the fireproof composite expansion sheet according to claim 1, wherein: and S6, carrying out standardized cutting processing on the cooled composite expansion sheet shape in cutting and forming, wherein the method comprises the following steps of:
s601: standard modeling
Establishing a standardized composite expansion sheet model through three-dimensional software, and introducing the standardized composite expansion sheet model into a system;
s602: automated cutting
Trimming and cutting is carried out on the appearance of the composite expansion sheet obtained through modeling through automatic cutting equipment.
11. The method for preparing the fireproof composite expansion sheet according to claim 1, wherein: the S7 sampling detection is performed according to the standard of 100:3, and comprises the following steps:
s701: appearance verification
Detecting the appearance of the finished composite expansion sheet through model matching, and detecting the edge burr degree of the finished composite expansion sheet;
s702: coefficient of expansion
The expansion coefficient parameter of the composite expansion sheet is detected, and the specific expansion coefficient alpha is calculated as follows:
[α=\frac{{\DeltaL}}{{L_0\cdot\DeltaT}}]；
wherein:
(α) is the linear expansion coefficient (in units of 1/degree centigrade or 1/Kelvin);
(\DeltaL) is the length variation (typically in meters);
(l_0) is the length of the object at the initial temperature (typically in meters);
(\DeltaT) is the amount of temperature change (degrees Celsius or Kelvin);
s703: impact pressure detection
Clamping and fixing the composite expansion sheet, and detecting the impact resistance and the bearing capacity of the composite expansion sheet by using equipment with adjustable pressure outside;
s704: report generation
And (3) generating a corresponding detection report according to the data obtained by actual detection, and comparing the detection report with the performance requirement set in the step (S1) so as to obtain the final product quality judgment.
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| US20130189702A1 (en) * | 2010-04-21 | 2013-07-25 | Siemens Healthcare Diagnostics Inc. | Curve Processor Algorithm for the Quality Control of (RT-) qPCR Curves |
| CN107266815A (en) * | 2017-06-30 | 2017-10-20 | 徐州苏牌高温新材料有限公司 | A kind of heat-resistant fireproof cable material |
| CN115926305A (en) * | 2023-02-10 | 2023-04-07 | 苏州宝富塑料制品有限公司 | Preparation method of novel material for expansion sheet for vehicle |
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2023
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|---|---|---|---|---|
| US5736109A (en) * | 1995-06-30 | 1998-04-07 | Minnesota Mining And Manufacturing Company | Intumescent sheet material and paste with organic binder |
| US20130189702A1 (en) * | 2010-04-21 | 2013-07-25 | Siemens Healthcare Diagnostics Inc. | Curve Processor Algorithm for the Quality Control of (RT-) qPCR Curves |
| CN107266815A (en) * | 2017-06-30 | 2017-10-20 | 徐州苏牌高温新材料有限公司 | A kind of heat-resistant fireproof cable material |
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