CN110014708B - Coated brewing vibration sheet special for automobile door and preparation method thereof - Google Patents

Coated brewing vibration sheet special for automobile door and preparation method thereof Download PDF

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CN110014708B
CN110014708B CN201910183794.2A CN201910183794A CN110014708B CN 110014708 B CN110014708 B CN 110014708B CN 201910183794 A CN201910183794 A CN 201910183794A CN 110014708 B CN110014708 B CN 110014708B
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vibration
layer
parts
foaming
coated
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CN110014708A (en
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肖焰
王庆凯
郑彦明
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Tianjin Haodi Rubber & Plastic Technology Co ltd
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Tianjin Haodi Rubber & Plastic Technology 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
    • B32B25/04—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
    • B32B25/045—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 foam
    • 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
    • B32B25/08—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 synthetic resin
    • 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
    • B32B25/18—Layered products comprising a layer of natural or synthetic rubber comprising butyl or halobutyl 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • 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
    • 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
    • C08L23/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
    • C08L23/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
    • C08L23/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefins
    • 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
    • B32B2266/0221—Vinyl resin
    • 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
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • 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
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/546—Flexural strength; Flexion stiffness
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/552—Fatigue strength
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/56—Damping, energy absorption
    • 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
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars
    • 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
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Abstract

The invention relates to a coated foaming vibration piece special for an automobile door and a preparation method thereof. When the coated foaming vibration-making sheet special for the automobile door is attached to the automobile door and passes through a baking workshop, the coating foaming layer is foamed and cured, and the coating foaming layer and the butyl rubber composite damping material jointly act to achieve the effects of vibration making and sound absorbing of the automobile door.

Description

Coated brewing vibration sheet special for automobile door and preparation method thereof
Technical Field
The invention belongs to the field of damping materials, relates to a constraint damping material for an automobile, and discloses a coated brewing vibrating piece special for an automobile door and a preparation method thereof.
Technical Field
At present, foamed sound-absorbing materials and rubber damping materials in automobiles are widely used by various large automobile factories. The foamed sound absorbing material can reduce the noise and airflow from outside the automobile and raise the comfort of the automobile. The material of the automobile foaming sound-absorbing material is generally resin, and the NVH function is played after the material is subjected to electrophoretic baking (140-160 ℃ multiplied by 20Min) foaming.
The damping material is derived for reducing vibration generated in the process of automobile running, and can be used immediately after being pasted on a corresponding position of an automobile body without heating. The principle is that the vibration potential energy of the automobile is converted into heat energy through the damping material to achieve the purpose of reducing vibration. However, the damping material supplied in the market at present is generally rubber type, and a widely adopted method for increasing the damping coefficient of the rubber type damping fin is to increase the thickness of the product, but the self weight of the vehicle body is increased after the thickness is increased, so that the oil consumption and the discharge are increased, and the purpose of environmental protection cannot be achieved.
Disclosure of Invention
Therefore, aiming at the problems, the invention provides the coated foaming vibration sheet special for the automobile door and the preparation method thereof, and a system structure combining the foaming sound-absorbing material and the damping material is adopted, so that the noise generated in vibration can be absorbed, the damping effect of the automobile door is increased, and the application range of the damping material is expanded.
The invention adopts the following technical scheme:
the utility model provides a layer that shakes in special coated foaming bubble vibration sheet of automobile door, includes layer and the foaming layer of shaking, wherein, the layer that shakes component and part by weight are:
100 portions of butyl rubber,
40-60 parts of carbon black,
50-80 parts of polyisobutylene,
50-60 parts of petroleum resin,
5-8 parts of graphene-coated hollow glass microspheres,
150 portions of light calcium carbonate and 180 portions of,
6-15 parts of naphthenic oil.
The foaming layer comprises the following components in parts by weight:
100 parts of raw material EVA resin, 20-25 parts of foaming agent, 1-2 parts of acid neutralizer, 1-3 parts of cross-linking agent, 0.1-3 parts of filling agent and 0.1-0.2 part of phthalocyanine green.
The carbon black is N550 carbon black.
The molecular weight of the polyisobutylene is between 1000-3000.
The petroleum resin is one or the combination of two of ESCorez 1204, ESCorez 1304, terpene resin and rosin resin.
The foaming agent is 4, 4' oxo-bis-benzenesulfonyl hydrazide.
The acid neutralizer is high-activity magnesium oxide.
The cross-linking agent is dicumyl peroxide, a cross-linking agent of Acksu.
The filler is one or a combination of calcium carbonate, talcum powder and microcrystalline wax.
The preparation method of the vibration-making layer in the coated foaming vibration sheet special for the automobile door comprises the following steps: (1) plasticizing butyl rubber on an open mill for 8-10min at 70-80 deg.C; (2) putting the butyl rubber obtained in the step (1) into an internal mixer, adding carbon black, light calcium carbonate and graphene coated hollow glass microspheres, mixing at 70-80 ℃ for 5-8min, adding polyisobutylene, petroleum resin and naphthenic oil, mixing for 5min, discharging and tabletting to obtain the flaky vibration layer material.
The preparation method of the graphene-coated hollow glass bead comprises the following steps:
adding 90-100 parts of hollow glass microspheres and 30-40 parts of silane coupling agent KH-550 into a high-speed stirrer, stirring at a high speed at 90 ℃ for 5min, slowly adding a suspension solution containing 2% of epoxy resin and 70% of graphene, continuously stirring at a heating temperature of 90 ℃ for 10min, stirring, drying in a vacuum drying oven, and drying to obtain the graphene-coated hollow glass microspheres.
The method for manufacturing the foaming layer material comprises the following steps: preheating an internal mixer for 30min to 95 ℃, putting EVA resin into the internal mixer, sequentially adding a foaming agent, an acid neutralizer, a filler and phthalocyanine green after the EVA resin is completely melted, carrying out primary mixing, adding a cross-linking agent after uniform mixing, continuing mixing for 10min, then granulating by a granulator, and controlling the mixing process and the granulating temperature to be 95-100 ℃ to obtain the granular foaming layer material.
The coated brewing vibration sheet special for the automobile door comprises the following steps: preheating an injection molding machine for 30min to 90 ℃, fixing an aluminum alloy mold with the thickness of 1mm, melting the granular foaming layer material by the injection molding machine, and performing injection molding on the surface of the framework layer aluminum alloy plate according to the shape of an open mold. And then pressing the flaky vibration layer material into the injection-molded opening by a tabletting machine to be compounded with the framework aluminum alloy plate and attaching release layer release paper to the other surface.
The coating type foaming vibration sheet special for the automobile door is structurally characterized in that a foaming layer is directly coated on the surface of a framework aluminum alloy plate, an opening after injection molding is reserved on the other surface of the framework aluminum alloy plate in the injection molding process of the foaming coating layer, and vibration making materials are compounded with the surface of the framework aluminum alloy plate in the opening.
The thickness of the flaky vibration making layer is 2-3mm, the thickness of the cladding foaming layer is 2-3mm, and the thickness of the framework layer aluminum alloy plate is 1 mm.
The invention has the beneficial effects that:
(1) the graphene-coated hollow glass microspheres in the vibration making layer in the coated foaming vibration sheet special for the automobile door have better flame retardant property and have the advantages of light weight and sound insulation due to the fact that the graphene is uniformly dispersed on the surface of the graphene-coated hollow glass microspheres. The graphene-coated hollow glass microspheres can improve or improve the water resistance, compressive strength, shrinkage rate and impact strength of the material. Therefore, the foamed vibration damping sheet provided by the invention not only has obviously improved bending resistance, but also has obviously improved vibration damping performance, aging resistance and high and low temperature resistance.
(2) The invention relates to a coated foaming vibration sheet special for an automobile door, which is characterized in that a foaming layer is directly coated on the surface of aluminum alloy, an opening is reserved on the other surface of the aluminum alloy in the injection molding process of the foaming coating layer, and a vibration-making material is compounded with the surface of the aluminum alloy in the opening. When the automobile passes through a baking workshop, the vibration making material part is firmly attached to the interior of the automobile door, the foaming layer around the framework layer aluminum alloy plate is foamed to adhere the automobile door plate and completely cover the framework layer aluminum alloy plate. The foamed double-layer damping structure converts vibration mechanical energy into heat energy after passing through the vibration making layer and the foaming layer so as to weaken vibration, and converts the mechanical energy into heat energy for the second time after passing through the framework layer aluminum alloy plate and the foaming layer on the back of the framework layer aluminum alloy plate. This structure effectively attenuates the propagation of vibrational mechanical energy.
(3) When the coated foaming vibrating piece special for the automobile door is vibrated, bent and deformed by external force, the composite damping layer material is forced to generate shear deformation, mechanical energy is converted into heat energy to be dissipated into air, and the coated foaming vibrating piece has good damping and noise reduction effects. The damping material has small change in mass and rigidity, and high safety and reliability.
Drawings
FIG. 1 is a front view of the structure of the damper blade of the present invention;
fig. 2 is a sectional view taken along line a-a of fig. 1.
Fig. 3 is a perspective view of the vibration damping sheet of the present invention.
Wherein 1 is coated with a foaming layer, 2 vibration damping layers and 3 framework layers.
Detailed Description
The invention is described in more detail below with reference to the following examples:
example 1:
the vibration-making layer in the coated foaming vibration sheet special for the automobile door comprises the following raw materials, by mass, 100kg of butyl rubber, 40kg of N550 carbon black, 40kg of polyisobutylene PIB-130050kg, 120450kg of petroleum resin ESCorez, 5kg of graphene-coated hollow glass microspheres, 150kg of light calcium carbonate and 6kg of naphthenic oil.
The coating foaming layer comprises the following raw materials of 100kg of EVA resin, 100kg of foaming agent OBSH20kg, 1kg of high-activity magnesium oxide of acid neutralizer, 1kg of cross-linking agent DCP, 0.1kg of calcium carbonate and 0.1kg of phthalocyanine green in parts by weight.
The preparation method of the vibration damping layer comprises the following steps: (1) plasticizing and mixing the butyl rubber on an open mill for 8min at the temperature of 70 ℃; (2) putting the butyl rubber obtained in the step (1) into an internal mixer, adding carbon black, light calcium carbonate and graphene coated hollow glass microspheres, mixing for 5min at 70 ℃, adding polyisobutylene, petroleum resin and naphthenic oil, mixing for 5min, discharging and tabletting to obtain the flaky vibration layer material. The preparation method of the graphene-coated hollow glass bead comprises the following steps:
adding 100kg of hollow glass microspheres and 30kg of silane coupling agent KH-550 into a high-speed stirrer, stirring at a high speed at 90 ℃ for 5min, slowly adding a suspension solution containing 2% of epoxy resin and 70% of graphene, continuously stirring at a heating temperature of 90 ℃ for 10min, stirring, drying in a vacuum drying oven, and drying to obtain the graphene-coated hollow glass microspheres.
The preparation method of the foaming layer material comprises the following steps: preheating an internal mixer for 30min to 95 ℃, putting EVA resin into the internal mixer, sequentially adding a foaming agent, an acid neutralizer, a filler and phthalocyanine green after the EVA resin is completely melted, carrying out primary mixing, adding a cross-linking agent after uniform mixing, continuing mixing for 10min, then granulating by a granulator, and controlling the mixing process and the granulating temperature to 95 ℃ to obtain the granular foaming layer material.
The coated brewing vibration sheet special for the automobile door comprises the following steps: preheating an injection molding machine for 30min to 90 ℃, fixing an aluminum alloy mold with the thickness of 1mm, melting the granular foaming layer material by the injection molding machine, and performing injection molding on the surface of the framework layer aluminum alloy plate according to the shape of an open mold. And then pressing the flaky vibration layer material into the injection-molded opening by a tabletting machine to be compounded with the framework aluminum alloy plate and attaching release layer release paper to the other surface.
The thickness of the flaky vibration making layer is 2mm, the thickness of the cladding foaming layer is 2mm, and the thickness of the framework layer aluminum alloy plate is 1 mm.
Example 2
The vibration-making layer in the coated foaming vibration sheet special for the automobile door comprises the following raw materials, by mass, 100kg of butyl rubber, 60kg of N550 carbon black, 60kg of polyisobutylene PIB-130080kg, 120460kg of petroleum resin ESCorez, 8kg of graphene-coated hollow glass microspheres, 180kg of light calcium carbonate and 15kg of naphthenic oil.
The coating foaming layer comprises the following raw materials of 100kg of EVA resin, 2kg of foaming agent OBSH25kg, acid neutralizer high-activity magnesium oxide, 3kg of cross-linking agent DCP, 3kg of talcum powder and 0.2kg of phthalocyanine green in parts by weight.
The preparation method of the vibration damping layer comprises the following steps: (1) plasticizing and mixing the butyl rubber on an open mill for 10min at the temperature of 80 ℃; (2) putting the butyl rubber obtained in the step (1) into an internal mixer, adding carbon black, light calcium carbonate and graphene coated hollow glass microspheres, mixing for 8min at 80 ℃, adding polyisobutylene, petroleum resin and naphthenic oil, mixing for 5min, discharging and tabletting to obtain the flaky vibration layer material.
The preparation method of the foaming layer material comprises the following steps: preheating an internal mixer for 30min to 95 ℃, putting EVA resin into the internal mixer, sequentially adding a foaming agent, an acid neutralizer, a filler and phthalocyanine green after the EVA resin is completely melted, carrying out primary mixing, adding a cross-linking agent after uniform mixing, continuing mixing for 10min, then granulating by a granulator, and controlling the mixing process and the granulating temperature to 100 ℃ to obtain the granular foaming layer material.
The coated brewing vibration sheet special for the automobile door comprises the following steps: preheating an injection molding machine for 30min to 90 ℃, fixing an aluminum alloy mold with the thickness of 1mm, melting the granular foaming layer material by the injection molding machine, and performing injection molding on the surface of the framework layer aluminum alloy plate according to the shape of an open mold. And then pressing the flaky vibration layer material into the injection-molded opening by a tabletting machine to be compounded with the framework aluminum alloy plate and attaching release layer release paper to the other surface.
The thickness of the flaky vibration making layer is 3mm, the thickness of the cladding foaming layer is 2mm, and the thickness of the framework layer aluminum alloy plate is 1 mm.
Example 3
The vibration-making layer in the coated foaming vibration sheet special for the automobile door comprises the following raw materials, by mass, 100kg of butyl rubber, 45kg of N550 carbon black, 45kg of polyisobutylene PIB-130065kg, 130453kg of petroleum resin ESCorez, 7kg of graphene-coated hollow glass microspheres, 160kg of light calcium carbonate and 8kg of naphthenic oil.
The coating foaming layer comprises the following raw materials of 100kg of EVA resin, 100kg of foaming agent OBSH22kg, 1.3kg of high-activity magnesium oxide of an acid neutralizer, 1.5kg of cross-linking agent DCP, 2kg of calcium carbonate and 0.15kg of phthalocyanine green in parts by weight.
The preparation method of the vibration damping layer comprises the following steps: (1) plasticizing butyl rubber on an open mill for rubber mixing for 9min at the temperature of 75 ℃; (2) putting the butyl rubber obtained in the step (1) into an internal mixer, adding carbon black, light calcium carbonate and graphene coated hollow glass microspheres, mixing for 6min at 70-80 ℃, adding polyisobutylene, petroleum resin and naphthenic oil, mixing for 5min, discharging and tabletting to obtain the flaky vibration layer material.
The preparation method of the foaming layer comprises the following steps: preheating an internal mixer for 30min to 95 ℃, putting EVA resin into the internal mixer, sequentially adding a foaming agent, an acid neutralizer, a filler and phthalocyanine green after the EVA resin is completely melted, carrying out primary mixing, adding a cross-linking agent after uniform mixing, continuing mixing for 10min, then granulating by a granulator, and controlling the mixing process and the granulating temperature to 97 ℃ to obtain the granular foaming layer material.
The coated brewing vibration sheet special for the automobile door comprises the following steps: preheating an injection molding machine for 30min to 90 ℃, fixing an aluminum alloy mold with the thickness of 1mm, melting the granular foaming layer material by the injection molding machine, and performing injection molding on the surface of the framework layer aluminum alloy plate according to the shape of an open mold. And then pressing the flaky vibration layer material into the injection-molded opening by a tabletting machine to be compounded with the framework aluminum alloy plate and attaching release layer release paper to the other surface.
The thickness of the flaky vibration making layer is 2.5mm, the thickness of the cladding foaming layer is 3mm, and the thickness of the framework layer aluminum alloy plate is 1 mm.
Compared with the preparation of common butyl rubber damping material
The raw materials comprise 100kg of butyl rubber, 60kg of carbon black, 80kg of polyisobutylene, 60kg of petroleum resin, 180kg of light calcium carbonate and 15kg of naphthenic oil.
The manufacturing method refers to the method for preparing the coated brewing vibration sheet special for the automobile door in the embodiment 1.
And (3) performance testing:
and (3) testing the damping performance: the analysis was carried out using a DMA dynamic mechanical analyzer manufactured by TA corporation, with a temperature setting range: 0 to 40 DEG C
Tensile test: GB/T528-2009 vulcanized rubber or thermoplastic rubber tensile stress strain performance
And (3) testing the peel strength: the peel strength of the rubber materials of the examples and comparative examples were tested using the GB/T15254-2014 standard.
The performances of the high flame retardant and antistatic butyl rubber composite damping materials prepared in the above examples 1-3 and the common butyl rubber damping material prepared in the comparative example were measured, and the results of the various performance tests are shown in table 1 below.
TABLE 1
Figure BDA0001992161540000061

Claims (1)

1. The utility model provides a special coated type foaming shake piece of car door which characterized in that: the damping layer comprises a damping layer and a foaming layer, wherein the damping layer comprises the following components in parts by weight:
100 portions of butyl rubber,
40-60 parts of carbon black,
50-80 parts of polyisobutylene,
50-60 parts of petroleum resin,
150 portions of light calcium carbonate and 180 portions of,
5-8 parts of graphene-coated hollow glass microspheres,
6-15 parts of naphthenic oil;
wherein the foaming layer comprises the following components in parts by weight:
100 portions of EVA resin,
20-25 parts of foaming agent,
1-2 parts of acid neutralizer,
1-3 parts of cross-linking agent,
0.1 to 3 portions of filler,
0.1-0.2 parts of phthalocyanine green;
the molecular weight of the polyisobutylene is between 1000-3000;
the petroleum resin is one or the combination of two of ESCorez 1204, ESCorez 1304, terpene resin and rosin resin;
the preparation method of the graphene-coated hollow glass bead comprises the following steps: adding 90-100 parts of hollow glass microspheres and 30-40 parts of silane coupling agent KH-550 into a high-speed stirrer, stirring at a high speed at 90 ℃ for 5min, slowly adding a suspension solution containing 2% of epoxy resin and 70% of graphene, continuously stirring at a heating temperature of 90 ℃ for 10min, stirring, drying in a vacuum drying oven, and drying to obtain graphene-coated hollow glass microspheres;
the foaming agent is 4, 4' oxo-bis-benzenesulfonyl hydrazide;
the acid neutralizer is high-activity magnesium oxide;
the cross-linking agent is dicumyl peroxide;
the filler is one or a combination of calcium carbonate, talcum powder and microcrystalline wax;
the structure of the special coated brewing vibration sheet for the automobile door is as follows: the foaming layer completely covers one surface of the aluminum alloy plate, an opening is reserved on the other surface of the aluminum alloy plate, a vibration making layer is embedded in the opening, and the vibration making layer is compounded with the other surface of the aluminum alloy plate;
the preparation method of the coated brewing vibration sheet special for the automobile door comprises the following steps:
(1) preparing a vibration-damping layer: plasticizing butyl rubber on an open mill for 8-10min at 70-80 deg.C; putting the rubber-refined butyl rubber into an internal mixer, adding carbon black, light calcium carbonate and graphene coated hollow glass microspheres, mixing at 70-80 ℃ for 5-8min, adding polyisobutylene, petroleum resin and naphthenic oil, mixing for 5min, discharging and tabletting to obtain a flaky vibration layer material;
(2) preparing a foaming layer: preheating an internal mixer to 90-95 ℃, putting EVA resin into the internal mixer, sequentially adding a foaming agent, an acid neutralizer, a filler and phthalocyanine green after the EVA resin is completely melted, carrying out primary mixing, adding a cross-linking agent after uniform mixing, continuously mixing for 10-15 min, then granulating by a granulator, and controlling the mixing process and the granulating temperature to 95-100 ℃ to obtain a granular foaming layer material;
(3) compounding a vibration-making layer and a foaming layer: preheating an injection molding machine to 90 ℃, fixing the aluminum alloy plate in a mold, melting the granular foaming layer material by the injection molding machine, performing injection molding on the surface of the framework layer aluminum alloy plate according to the shape of an opening mold, pressing the flaky vibration making layer material into the opening formed by injection molding, compounding the flaky vibration making layer material with the framework aluminum alloy plate, and attaching release paper to the other side of the vibration making layer.
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Denomination of invention: A special wrapped foam vibration pad for automotive doors and its preparation method

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