CN116638835B - Ethylene propylene diene monomer water-swellable sealing strip and preparation process thereof - Google Patents

Ethylene propylene diene monomer water-swellable sealing strip and preparation process thereof Download PDF

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Publication number
CN116638835B
CN116638835B CN202310902585.5A CN202310902585A CN116638835B CN 116638835 B CN116638835 B CN 116638835B CN 202310902585 A CN202310902585 A CN 202310902585A CN 116638835 B CN116638835 B CN 116638835B
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strip
water
parts
expansion strip
thermal expansion
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CN202310902585.5A
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CN116638835A (en
Inventor
孙玉博
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Yatai Sealing Co ltd
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Yatai Sealing Co ltd
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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
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/14—Layered products comprising a layer of natural or synthetic rubber comprising synthetic rubber copolymers
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/303—Particular design of joint configurations the joint involving an anchoring effect
    • B29C66/3034—Particular design of joint configurations the joint involving an anchoring effect making use of additional elements, e.g. meshes
    • B29C66/30341—Particular design of joint configurations the joint involving an anchoring effect making use of additional elements, e.g. meshes non-integral with the parts to be joined, e.g. making use of extra elements
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/88—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced
    • B29C70/887—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced locally reinforced, e.g. by fillers
    • 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
    • B29D99/00—Subject matter not provided for in other groups of this subclass
    • B29D99/0053—Producing sealings
    • 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
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B25/042—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of natural rubber or synthetic rubber
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/04—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the partial melting of at least one 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • 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
    • 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
    • B32B7/08—Interconnection of layers by mechanical means
    • 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
    • B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B7/00—Special arrangements or measures in connection with doors or windows
    • E06B7/16—Sealing arrangements on wings or parts co-operating with the wings
    • E06B7/22—Sealing arrangements on wings or parts co-operating with the wings by means of elastic edgings, e.g. elastic rubber tubes; by means of resilient edgings, e.g. felt or plush strips, resilient metal strips
    • E06B7/23—Plastic, sponge rubber, or like strips or tubes
    • E06B7/2314—Plastic, sponge rubber, or like strips or tubes characterised by the material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2217—Oxides; Hydroxides of metals of magnesium
    • C08K2003/2224—Magnesium hydroxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Structural Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Composite Materials (AREA)
  • Sealing Material Composition (AREA)

Abstract

The application provides an ethylene propylene diene monomer water-swellable sealing strip and a preparation process thereof, and belongs to the technical field of production of swellable sealing strips. The expansion sealing strip comprises a thermal expansion strip, a water expansion strip and a crosslinking layer, wherein the thermal expansion strip is a rubber strip which expands when encountering heat; the water expansion strip is a rubber strip which expands when meeting water; the crosslinking layer is arranged between the thermal expansion strip and the water expansion strip, and the thermal expansion strip and the water expansion strip are partially exposed; the crosslinking layer comprises the following components in parts by weight: 100 parts of rubber, 30-200 parts of magnetic metal fiber, 10-20 parts of flame retardant and 10-30 parts of plasticizer. The preparation method comprises the steps of green body preparation, assembly, crosslinking compounding, vulcanization and the like. The application ensures that one sealing strip has the characteristics of expanding when meeting water and fire, has stronger connection between the thermal expansion strip and the water expansion strip, and avoids the connection failure between the thermal expansion strip and the water expansion strip in the subsequent use process.

Description

Ethylene propylene diene monomer water-swellable sealing strip and preparation process thereof
Technical Field
The application belongs to the technical field of production of expansion sealing strips, and particularly relates to an ethylene propylene diene monomer water-swellable sealing strip and a preparation process thereof.
Background
The expansion sealing strip is a sealing strip commonly used for doors and windows on buildings, and the door seams or window seams are sealed by expanding when the sealing strip is contacted with water or high temperature. At present, the water-swellable sealing strip is generally used for doors and windows facing outdoors, and the fire-swellable sealing strip is generally used for fireproof doors.
However, along with the diversification of building designs, some doors and windows have waterproof requirements and fireproof requirements at present; the existing sealing strip only can expand when meeting water or fire due to different materials of the components, and is difficult to meet the two requirements of water resistance and fire resistance, so that one more fireproof door and window or one more waterproof door and window are required to be designed, or a special door capable of simultaneously installing the water-expansion sealing strip and the fire-expansion sealing strip is designed, and resource waste and cost improvement are caused.
Disclosure of Invention
The application aims to provide an ethylene propylene diene monomer water-swellable sealing strip and a preparation process thereof, which are used for solving the technical problem that the existing swellable sealing strip in the prior art is difficult to simultaneously realize both waterproof and fireproof requirements.
In order to achieve the above purpose, the application adopts the following technical scheme: the ethylene propylene diene monomer water-swellable sealing strip comprises a thermal swelling strip, a water swelling strip and a crosslinking layer, wherein the thermal swelling strip is a rubber strip which swells when encountering heat; the water expansion strip is a rubber strip which expands when meeting water; the crosslinking layer is arranged between the thermal expansion strip and the water expansion strip, and the thermal expansion strip and the water expansion strip are partially exposed; the crosslinking layer comprises the following components in parts by weight:
100 parts of rubber, 30-200 parts of magnetic metal fiber, 10-20 parts of flame retardant and 10-30 parts of plasticizer.
Further, the thermal expansion strip comprises the following components in parts by weight:
100 parts of ethylene propylene diene monomer, 50-140 parts of thermal expansion agent, 10-20 parts of flame retardant, 40-200 parts of reinforcing agent and 15-50 parts of cross-linking agent;
the water expansion strip comprises the following components in parts by weight:
100 parts of ethylene propylene diene monomer, 50-140 parts of water absorbent, 10-20 parts of flame retardant, 40-200 parts of reinforcing agent and 15-50 parts of cross-linking agent.
Further, the magnetic metal fiber contains a fibrous material with ferromagnetism of one or more elements of iron, cobalt and titanium; the rubber in the crosslinking layer adopts ethylene propylene diene monomer.
Further, the length of the magnetic metal fiber is 0.5-3mm, and the length-diameter ratio is 10-50.
In order to achieve the above purpose, the technical scheme adopted by the application is as follows: the preparation method of the ethylene-propylene-diene monomer water-swellable sealing strip is used for preparing the ethylene-propylene-diene monomer water-swellable sealing strip, and comprises the following steps of:
s100, preparing a blank of a thermal expansion strip and a water expansion strip, and preparing a crosslinked layer sheet;
s200, assembling, namely clamping the crosslinked layer sheet between the blank of the thermal expansion strip and the blank of the water expansion strip to form an assembly body;
s300, crosslinking and compounding, wherein a heating coil is used for heating the magnetic metal fibers in the crosslinking layer, and a magnetic field and vibration are applied to the assembly, wherein the direction of the magnetic field and the crosslinking layer sheet form an included angle;
s400, vulcanizing, and vulcanizing and cooling the assembly.
Further, in S100, the steps of preparing the green body of the thermal expansion strip and the green body of the water expansion strip include mixing the raw materials, and extruding the raw materials;
the preparation of the crosslinked layer sheet comprises the steps of mixing raw materials except the magnetic metal fibers of the crosslinked layer, pressing the raw materials into a required thickness through a tabletting process, mixing the magnetic metal fibers in the process, and cutting the mixture into a required width.
Further, in S200, after the volatile rubber solvent is applied to both sides of the crosslinked layer sheet, it is sandwiched between the green body of the thermal expansion strip and the green body of the water expansion strip.
Further, in S300, the step of crosslinking and compounding is implemented by a crosslinking and compounding device, where the crosslinking and compounding device includes a plurality of heating coils, a plurality of relay pinch roller mechanisms, a vibration mechanism, and a strong magnetic mechanism, and the plurality of heating coils are arranged at intervals; the relay roller clamping mechanisms are arranged between the adjacent heating coils; the vibration mechanism is arranged between the adjacent heating coils; the strong magnetic mechanism is arranged between the adjacent heating coils.
Further, the crosslinking composite device also comprises a bracket body, and the vibration mechanism and the heating coil are arranged on the bracket body;
the strong magnetic mechanism comprises magnetic poles respectively arranged at two sides of the assembly body, the angle between the connecting line of the two magnetic poles and the cross-linked layer sheet is 30-90 degrees, and the vibration mechanism is arranged between the two magnetic poles;
the relay roller clamping mechanism comprises a damping support, a roller support and two roller bodies, wherein the damping support is arranged on the support body, the roller support is arranged on the damping support, the two roller bodies are rotatably arranged on the roller support and are used for clamping an assembly body, and grooves matched with the assembly body are formed in the two roller bodies;
the vibration mechanism comprises an ultrasonic generator and a vibrator arranged on the roller support, and the ultrasonic generator is arranged on the support body and is positioned behind the roller support.
Further, the shock mount includes rubber shell, rubber baffle, inserted bar and starch thick liquid, and the rubber shell sets firmly on the support body, and the rubber baffle is established in the rubber shell, is equipped with the jack of vertical alignment on rubber shell upper portion and the rubber baffle, and starch thick liquid fills in the rubber shell, and inserted bar upper portion and roller support connection, lower part and plug in and establish in the jack, inserted bar and jack interference fit.
The ethylene propylene diene monomer water-swellable sealing strip provided by the application has the beneficial effects that: compared with the prior art, the waterproof sealing strip has the advantages that the thermal expansion strip and the water expansion strip are combined through the crosslinking layer, the water expansion strip expands and the exposed surface is increased when the sealing strip meets water, the thermal expansion strip is shielded for waterproof, and the thermal expansion strip expands and the exposed surface is increased when the sealing strip meets fire, and the water expansion strip is shielded for fireproof, so that one sealing strip can have the characteristics of expanding when meeting water and fire; the cross-linking layer is also made of rubber materials, the characteristics of the cross-linking layer and the characteristics of the thermal expansion strips and the characteristics of the water expansion strips are basically consistent, the cross-linking layer is not easy to fall off after long-term use, the magnetic metal fibers can penetrate through the joint surfaces of the thermal expansion strips and the water expansion strips, the connection performance is enhanced, and even if one or both of the thermal expansion strips and the water expansion strips expand, the thermal expansion strips and the water expansion strips cannot be separated, so that the effectiveness of expansion sealing is ensured.
The preparation method of the ethylene propylene diene monomer water-swellable sealing strip provided by the application has the beneficial effects that: compared with the prior art, the application can realize the preparation of the ethylene propylene diene monomer water-swelling sealing strip by adding the steps of assembling and crosslinking compounding between the preparation and vulcanization of the green body; after the crosslinked layer sheet is clamped between the blank of the thermal expansion strip and the blank of the water expansion strip, the magnetic metal fibers in the crosslinked layer are heated by the heating coil, so that the magnetic metal fibers generate heat and are transferred to rubber contacted with the magnetic metal fibers, the rubber near the magnetic metal fibers is softened or liquefied by matching with vibration, under the action of a magnetic field, the magnetic metal fibers receive the force for arranging a paramagnetic field, and finally the magnetic metal fibers poured into the crosslinked layer sheet stand up, partially enter the thermal expansion strip or one side of the thermal expansion strip contacted with the crosslinked layer sheet, so that the rubber of the crosslinked layer sheet is in thermal melting and mixing with the rubber of the thermal expansion strip and the rubber of the water expansion strip to form connection, the magnetic metal fibers strengthen the connection, and finally the thermal expansion strip, the water expansion strip and the crosslinked layer are basically fused into a whole through vulcanization, so that the connection failure between the thermal expansion strip and the water expansion strip in the subsequent use process is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a preparation method of an ethylene propylene diene monomer water-swellable seal strip provided by an embodiment of the application;
FIG. 2 is a schematic diagram of a front view structure of a cross-linking composite device used in a method for preparing an ethylene-propylene-diene monomer water-swellable seal strip according to an embodiment of the present application, wherein the schematic diagram includes a schematic diagram of a cross-sectional structure of a shock-absorbing support, and an arrow in the diagram indicates a movement direction of the swellable seal strip;
fig. 3 is a schematic side view structure of a cross-linking composite device used in the preparation method of the ethylene-propylene-diene monomer water-swellable sealing strip according to the embodiment of the application.
Wherein, each reference sign is as follows in the figure:
11. a thermal expansion strip; 12. a water swelling strip; 13. a crosslinked layer;
20. a heating coil;
30. a relay pinch roller mechanism; 31. a roller body; 32. a roller support; 33. a damping support;
331. a rubber shell; 332. a rubber separator; 333. a rod; 334. a starch slurry;
40. a vibration mechanism; 41. an ultrasonic generator; 42. a vibrator;
50. a strong magnetic mechanism;
60. a bracket body.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It is to be understood that the described embodiments are only some, but not all, embodiments of the present application, and that the specific embodiments described herein are intended to be illustrative of the present application and not limiting. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The ethylene propylene diene monomer water-swellable sealing strip and the preparation process thereof provided by the application are now described.
The first embodiment of the application provides an ethylene propylene diene monomer water-swellable sealing strip which comprises a thermal expansion strip 11, a water expansion strip 12 and a crosslinking layer 13, wherein the thermal expansion strip 11 is a rubber strip which swells when encountering heat; the water expansion strip 12 is a rubber strip which expands when meeting water; the crosslinking layer 13 is arranged between the thermal expansion strip 11 and the water expansion strip 12, and the thermal expansion strip 11 and the water expansion strip 12 are partially exposed; wherein the crosslinking layer 13 comprises the following components in parts by weight:
100 parts of rubber, 30-200 parts of magnetic metal fiber, 10-20 parts of flame retardant, 15-50 parts of cross-linking agent and 10-30 parts of plasticizer.
Compared with the prior art, the ethylene propylene diene monomer water-swellable sealing strip has the advantages that the thermal expansion strip 11 and the water expansion strip 12 are compounded through the crosslinking layer 13, the water expansion strip 12 swells and the exposed surface is enlarged when in water, the thermal expansion strip 11 is shielded for water resistance, and the thermal expansion strip 11 swells and the exposed surface is enlarged when in fire, the water expansion strip 12 is shielded for fire resistance, so that one sealing strip can have the characteristics of swelling when in water and in fire; the cross-linking layer 13 is also made of rubber material, has basically the same material characteristics as the thermal expansion strip 11 and the water expansion strip 12, is not easy to fall off after long-term use, and can penetrate through the joint surface between the thermal expansion strip 11 and the water expansion strip 12 through the magnetic metal fiber, so that the connection performance is enhanced, and even if one or both of the thermal expansion strip 11 and the water expansion strip 12 are expanded, the thermal expansion strip is not separated, and the effectiveness of expansion sealing is ensured.
The application further provides a specific embodiment based on the first embodiment, which is as follows:
the thermal expansion strip 11 comprises the following components in parts by weight:
100 parts of ethylene propylene diene monomer, 50-140 parts of thermal expansion agent, 10-20 parts of flame retardant, 40-200 parts of reinforcing agent and 15-50 parts of cross-linking agent.
The water expansion strip 12 comprises the following components in parts by weight:
100 parts of ethylene propylene diene monomer, 50-140 parts of water absorbent, 10-20 parts of flame retardant, 40-200 parts of reinforcing agent and 15-50 parts of cross-linking agent.
Wherein the minimum expansion temperature of the thermal expansion agent is higher than the highest temperature required in the process to avoid expansion of the thermal expansion agent during the process.
The thermal expansion agent can be expanded graphite, melamine phosphate, etc.
The flame retardant can be any one or more of magnesium hydroxide, aluminum hydroxide, ammonium phosphate, antimonous oxide, ammonium polyphosphate and organic phosphine oligomer.
The reinforcing agent can be any one or more of carbon black, white carbon black and calcium carbonate.
The cross-linking agent can be selected from one or more of sulfur, sulfur donor, organic peroxide, carbamate and maleimide.
The plasticizer can be any one or more of paraffin-based rubber plasticizers, aromatic-based rubber plasticizers, cycloalkyl-based rubber plasticizers and other types of plasticizers.
In addition, other auxiliary agents can be added into the thermal expansion strip 11 and the water expansion strip 12 to improve the characteristics of the corresponding aspects.
The magnetic metal fiber contains a fibrous material with ferromagnetism of one or more elements of iron, cobalt and titanium; the rubber in the crosslinking layer 13 is ethylene propylene diene monomer.
The length of the magnetic metal fiber is 0.5-3mm, the length-diameter ratio is 10-50, and the specific dimension specification can be according to the design dimension of the sealing strip.
As shown in fig. 1, the second embodiment of the present application provides a method for preparing an ethylene-propylene-diene monomer water-swellable seal strip for use in preparing the ethylene-propylene-diene monomer water-swellable seal strip, which comprises the following steps:
s100, preparing a blank, preparing blanks of the thermal expansion strips 11 and the water expansion strips 12, and preparing a crosslinked layer sheet;
s200, assembling, namely clamping the crosslinked layer sheet between the blank of the thermal expansion strip 11 and the blank of the water expansion strip 12 to form an assembly body;
s300, crosslinking and compounding, wherein the heating coil 20 is used for heating the magnetic metal fibers in the crosslinking layer 13, and applying a magnetic field and vibration to the assembly, wherein the direction of the magnetic field and the crosslinking layer sheet form an included angle;
s400, vulcanizing, and vulcanizing and cooling the assembly.
Compared with the prior art, the preparation method of the ethylene-propylene-diene monomer water-swellable sealing strip provided by the embodiment can realize the preparation of the ethylene-propylene-diene monomer water-swellable sealing strip by adding the steps of assembly and crosslinking combination between the preparation and vulcanization of a blank; after the crosslinked layer sheet is clamped between the blank of the thermal expansion strip 11 and the blank of the water expansion strip 12, the magnetic metal fibers in the crosslinked layer 13 are heated by the heating coil 20, so that the magnetic metal fibers generate heat and are transferred to rubber contacted with the magnetic metal fibers, the rubber near the magnetic metal fibers can be softened or liquefied by matching vibration, the magnetic metal fibers receive the force for arranging the paramagnetic field under the action of a magnetic field, and finally the magnetic metal fibers poured into the crosslinked layer sheet stand up, part of the magnetic metal fibers enter one side of the thermal expansion strip 11 or the water expansion strip 12 contacted with the crosslinked layer sheet, so that the rubber of the crosslinked layer sheet is in thermal fusion mixing with the rubber of the thermal expansion strip 11 and the water expansion strip 12 to form connection, the magnetic metal fibers can strengthen the connection, and finally the thermal expansion strip 11, the water expansion strip 12 and the crosslinked layer 13 are basically fused into a whole through vulcanization, and the connection failure between the thermal expansion strip 11 and the water expansion strip 12 in the subsequent use process is avoided.
As shown in fig. 1 to 3, a specific embodiment of the present application provided on the basis of the first embodiment is as follows:
in S100, the steps of preparing the green body of the thermal expansion strip 11 and the green body of the water expansion strip 12 comprise mixing raw materials, and then extruding and molding;
the step of preparing the crosslinked layer sheet includes compounding the raw materials of the crosslinked layer 13 except the magnetic metal fibers, kneading, pressing into a desired thickness through a tabletting process, incorporating the magnetic metal fibers in the process, and cutting into a desired width.
In S200, after the volatile rubber solvent is applied to both sides of the crosslinked layer sheet, it is sandwiched between the green body of the thermal expansion 11 and the green body of the water expansion 12. The rubber part can be dissolved by the rubber solvent, and the green body of the thermal expansion strip 11 and the green body of the water expansion strip 12 are preliminarily bonded together by the dissolution, so that separation can not be caused in subsequent procedures, and the volatile rubber solvents can be gradually volatilized in subsequent processing and heating processes and can not remain in the sealing strip. The volatile rubber solvent can be toluene, benzene, gasoline and the like, and can also be other solvents with lower toxicity and environmental protection.
As shown in fig. 2 and 3, in S300, the step of crosslinking and compounding is performed by a crosslinking and compounding device including a plurality of heating coils 20, a plurality of relay pinch roller mechanisms 30, a vibration mechanism 40, and a ferromagnetic mechanism 50, the plurality of heating coils 20 being disposed at intervals; a plurality of relay pinch roller mechanisms 30 are provided between adjacent heating coils 20; the vibration mechanism 40 is provided between the adjacent heating coils 20; the ferromagnetic mechanism 50 is provided between adjacent heating coils 20.
As shown in fig. 2 and 3, the crosslinking complex apparatus further includes a bracket body 60, and the vibration mechanism 40 and the heating coil 20 are provided on the bracket body 60.
The strong magnetic mechanism 50 comprises magnetic poles respectively arranged at two sides of the assembly, the angle between the connecting line of the two magnetic poles and the cross-linked layer sheet is 30-90 degrees, and the vibration mechanism 40 is arranged between the two magnetic poles.
The relay pinch roller mechanism 30 comprises a shock absorption support 33, a roller support 32 and two roller bodies 31, wherein the shock absorption support 33 is arranged on the support body 60, the roller support 32 is arranged on the shock absorption support 33, the two roller bodies 31 are rotatably arranged on the roller support 32 and used for clamping an assembly body, and grooves matched with the assembly body are formed in the two roller bodies 31.
The vibration mechanism 40 includes an ultrasonic generator 41 and a vibrator 42 provided on the roller holder 32, the ultrasonic generator 41 being provided on the holder body 60 behind the roller holder 32.
In a specific embodiment, the two roller bodies 31 of the relay pinch mechanism 30 are disposed in the heating coil 20, and the two magnetic poles of the ferromagnetic mechanism 50 are disposed on two sides of the heating coil 20, so that the structure is more compact, and the movement of the magnetic metal fibers can be improved, so as to achieve a better connection effect.
As shown in fig. 2, the shock mount 33 includes a rubber shell 331, a rubber partition 332, an insert 333, and a starch slurry 334, where the rubber shell 331 is fixedly disposed on the support 60, the rubber partition 332 is disposed in the rubber shell 331, vertically aligned insertion holes are disposed on the upper portion of the rubber shell 331 and the rubber partition 332, the starch slurry 334 is filled in the rubber shell 331, the upper portion of the insert 333 is connected with the roller support 32, the lower portion of the insert 333 is inserted in the insertion holes, and the insert 333 is in interference fit with the insertion holes, so as to reduce the possibility of overflow of the starch slurry 334 due to vibration.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.

Claims (10)

1. An ethylene propylene diene monomer water-swellable seal strip, comprising:
the thermal expansion strip (11) is a rubber strip which expands when encountering heat;
the water expansion strip (12) is a water-swelling rubber strip;
the crosslinking layer (13) is arranged between the thermal expansion strip (11) and the water expansion strip (12), and the thermal expansion strip (11) and the water expansion strip (12) are partially exposed;
wherein the crosslinking layer (13) comprises the following components in parts by weight:
100 parts of rubber, 30-200 parts of magnetic metal fiber, 10-20 parts of flame retardant and 10-30 parts of plasticizer;
the rubber in the thermal expansion strip (11), the water expansion strip (12) and the crosslinking layer (13) is ethylene propylene diene monomer rubber; the magnetic metal fiber part enters the side of the thermal expansion strip or the water expansion strip, which is contacted with the cross-linked layer sheet.
2. The ethylene propylene diene monomer water-swellable seal strip of claim 1, wherein,
the thermal expansion strip (11) comprises the following components in parts by weight:
100 parts of ethylene propylene diene monomer, 50-140 parts of thermal expansion agent, 10-20 parts of flame retardant, 40-200 parts of reinforcing agent and 15-50 parts of cross-linking agent;
the water expansion strip (12) comprises the following components in parts by weight:
100 parts of ethylene propylene diene monomer, 50-140 parts of water absorbent, 10-20 parts of flame retardant, 40-200 parts of reinforcing agent and 15-50 parts of cross-linking agent.
3. The water-swellable seal of claim 1, wherein the magnetic metal fibers comprise a fibrous material having ferromagnetic properties comprising one or more of iron, cobalt, and titanium.
4. The ethylene propylene diene monomer water-swellable seal strip of claim 1, wherein: the length of the magnetic metal fiber is 0.5-3mm, and the length-diameter ratio is 10-50.
5. A method for preparing an ethylene-propylene-diene monomer water-swellable seal strip, which is characterized by being used for preparing the ethylene-propylene-diene monomer water-swellable seal strip according to any one of claims 1-4, and comprising the following steps:
s100, preparing a blank of a thermal expansion strip (11) and a water expansion strip (12), and preparing a crosslinked layer sheet;
s200, assembling, namely clamping the crosslinked layer sheet between a blank of the thermal expansion strip (11) and a blank of the water expansion strip (12) to form an assembly body;
s300, crosslinking and compounding, wherein a heating coil (20) is used for heating the magnetic metal fibers in the crosslinking layer (13), and a magnetic field and vibration are applied to the assembly, wherein the direction of the magnetic field and the crosslinking layer sheet form an included angle;
s400, vulcanizing, and vulcanizing and cooling the assembly.
6. The method for preparing the ethylene propylene diene monomer water-swellable seal strip as set forth in claim 5, wherein in S100:
the steps of preparing the green body of the thermal expansion strip (11) and the green body of the water expansion strip (12) comprise the steps of mixing raw materials, and then extruding and molding;
the step of preparing the crosslinked layer sheet comprises the steps of mixing the raw materials except the magnetic metal fibers of the crosslinked layer (13), pressing the raw materials into a required thickness through a tabletting process, mixing the magnetic metal fibers in the process, and cutting the mixture into a required width.
7. The method for preparing the ethylene propylene diene monomer water-swellable seal strip as set forth in claim 5, wherein in S200:
after the two sides of the crosslinked layer sheet are coated with volatile rubber solvent, the crosslinked layer sheet is clamped between the green body of the thermal expansion strip (11) and the green body of the water expansion strip (12).
8. The method for producing a water-swellable seal tape of ethylene-propylene-diene monomer according to claim 5, wherein in S300, the step of crosslinking and compounding is performed by a crosslinking and compounding device comprising:
a plurality of heating coils (20) arranged at intervals;
a plurality of relay pinch roller mechanisms (30) provided between adjacent heating coils (20);
a vibration mechanism (40) provided between adjacent heating coils (20);
and a ferromagnetic mechanism (50) provided between adjacent heating coils (20).
9. The method for preparing the ethylene propylene diene monomer water-swellable sealing strip according to claim 8, which is characterized in that: the crosslinking composite device further comprises a bracket body (60), and the vibration mechanism (40) and the heating coil (20) are arranged on the bracket body (60);
the strong magnetic mechanism (50) comprises magnetic poles respectively arranged at two sides of the assembly body, the angle between the connecting line of the two magnetic poles and the cross-linked layer sheet is 30-90 degrees, and the vibration mechanism (40) is arranged between the two magnetic poles;
the relay clamping roller mechanism (30) comprises a damping support (33), a roller support (32) and two roller bodies (31), wherein the damping support (33) is arranged on the support body (60), the roller support (32) is arranged on the damping support (33), the two roller bodies (31) are rotatably arranged on the roller support (32) and are used for clamping the assembly body, and grooves matched with the assembly body are formed in the two roller bodies (31);
the vibration mechanism (40) comprises an ultrasonic generator (41) and a vibrator (42) arranged on the roller support (32), wherein the ultrasonic generator (41) is arranged on the support body (60) and is positioned behind the roller support (32).
10. The method for preparing the ethylene propylene diene monomer water-swellable sealing strip according to claim 9, which is characterized in that: the shock mount (33) comprises a rubber shell (331), a rubber baffle (332), an inserting rod (333) and starch slurry (334), wherein the rubber shell (331) is fixedly arranged on the support body (60), the rubber baffle (332) is arranged in the rubber shell (331), vertically aligned insertion holes are formed in the upper portion of the rubber shell (331) and the rubber baffle (332), the starch slurry (334) is filled in the rubber shell (331), the upper portion of the inserting rod (333) is connected with the roller support (32), the lower portion of the inserting rod is inserted in the insertion holes, and the inserting rod (333) is in interference fit with the insertion holes.
CN202310902585.5A 2023-07-21 2023-07-21 Ethylene propylene diene monomer water-swellable sealing strip and preparation process thereof Active CN116638835B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6358580B1 (en) * 1998-01-09 2002-03-19 Thomas Mang Sealing material which swells when treated with water
KR101359824B1 (en) * 2013-05-28 2014-02-26 (주)지승컨설턴트 Water-proof type sealant with expanding hollowness
CN203947838U (en) * 2014-01-07 2014-11-19 天津盛达防火门技术有限公司 Portable fire emergency escape cabin
CN104712167A (en) * 2013-12-12 2015-06-17 天津盛达防火门技术有限公司 Fire life-saving refuge room and working method thereof
CN109354734A (en) * 2018-10-25 2019-02-19 西北橡胶塑料研究设计院有限公司 A kind of flame retardant type hydro-expansive rubber material and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6358580B1 (en) * 1998-01-09 2002-03-19 Thomas Mang Sealing material which swells when treated with water
KR101359824B1 (en) * 2013-05-28 2014-02-26 (주)지승컨설턴트 Water-proof type sealant with expanding hollowness
CN104712167A (en) * 2013-12-12 2015-06-17 天津盛达防火门技术有限公司 Fire life-saving refuge room and working method thereof
CN203947838U (en) * 2014-01-07 2014-11-19 天津盛达防火门技术有限公司 Portable fire emergency escape cabin
CN109354734A (en) * 2018-10-25 2019-02-19 西北橡胶塑料研究设计院有限公司 A kind of flame retardant type hydro-expansive rubber material and preparation method thereof

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