CN108116007A - Automobile engine nacelle sound-heat insulated cushion of composite construction and preparation method thereof - Google Patents

Automobile engine nacelle sound-heat insulated cushion of composite construction and preparation method thereof Download PDF

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Publication number
CN108116007A
CN108116007A CN201611071061.2A CN201611071061A CN108116007A CN 108116007 A CN108116007 A CN 108116007A CN 201611071061 A CN201611071061 A CN 201611071061A CN 108116007 A CN108116007 A CN 108116007A
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China
Prior art keywords
layer
automobile engine
composite construction
heat insulated
engine nacelle
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Pending
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CN201611071061.2A
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Chinese (zh)
Inventor
张永强
高翠梅
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Shanghai Xinan Auto Soundproof Blanket Co Ltd
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Shanghai Xinan Auto Soundproof Blanket Co Ltd
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Application filed by Shanghai Xinan Auto Soundproof Blanket Co Ltd filed Critical Shanghai Xinan Auto Soundproof Blanket Co Ltd
Priority to CN201611071061.2A priority Critical patent/CN108116007A/en
Publication of CN108116007A publication Critical patent/CN108116007A/en
Pending legal-status Critical Current

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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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • 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
    • B32B25/02—Layered products comprising a layer of natural or synthetic rubber with fibres or particles being present as additives in the 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
    • 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
    • B32B25/10—Layered products comprising a layer of natural or synthetic rubber next to a fibrous or filamentary 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
    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
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    • 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
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    • 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
    • B32B5/02—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 structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
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    • 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
    • B32B5/20—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 foamed in situ
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    • B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/245—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it being a foam layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0838—Insulating elements, e.g. for sound insulation for engine compartments
    • 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
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • 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
    • 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
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/104—Oxysalt, e.g. carbonate, sulfate, phosphate or nitrate particles
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    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/107—Ceramic
    • B32B2264/108—Carbon, e.g. graphite particles
    • 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
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/12—Mixture of at least two particles made of different materials
    • 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
    • B32B2266/0278—Polyurethane
    • 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
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    • B32B2307/00—Properties of the layers or laminate
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    • B32B2307/306—Resistant to heat
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    • 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
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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    • B32B2605/00—Vehicles
    • B32B2605/08—Cars
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Fluid Mechanics (AREA)
  • Textile Engineering (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)

Abstract

Automobile engine nacelle sound-heat insulated cushion the present invention relates to a kind of composite construction and preparation method thereof is five-layer structure, including punching aluminium foil layer, nonwoven layer, flame retardant polyurethane layer, double-layer and the nonwoven layer set gradually from top to bottom.Compared with prior art, the present invention can play absorption, attenuation to high frequency and low frequency noise, strengthen whole sound insulation, noise reduction, heat-insulated effect so as to play, and pts wt reduces by 70% compared with existing structure.

Description

Automobile engine nacelle sound-heat insulated cushion of composite construction and preparation method thereof
Technical field
The present invention relates to a kind of auto sound-insulating and thermal-insulating pad, more particularly, to a kind of automobile engine nacelle of composite construction with every Sound heat insulating mattress and preparation method thereof.
Background technology
Front panel mainly includes two kinds of structures in the enging cabin of automobile industry at present：(1) overwhelming majority uses resin-oatmeal Glass fiber material is added to make part.Since the engine in enging cabin can generate larger noise and very high temperature at work Degree, big using above-mentioned material pts wt, sound-insulating and heat-insulating effect is general, and glass is very big to the pollution of environment.(2) resin-oatmeal The composite construction of+cotton fiber：Weight weight, of high cost, complex process.
Chinese patent CN103182810A discloses a kind of enging cabin composite stratotype sound-heat insulated cushion, is located at automobile hair In motivation, which is three-decker, and upper surface layer and undersurface layer are density 100g/cm2Non-woven fabrics, interlayer For density 13-18kg/m3Flame retardant polyurethane layer, non-woven fabrics through hot pressing connects on flame retardant polyurethane layer, the upper surface The aluminium foil reflecting layer that a layer thickness is 0.1mm is also set up on layer, the application material five-layer structure adds on the basis of the patent 1.5-2.0kg/m2Double-layer, compared to the patent engine compartment noise soundproof effect be better than 30%-40%.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of light-weight, sound insulation is good The automobile engine nacelle sound-heat insulated cushion of composite construction and preparation method thereof.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of automobile engine nacelle sound-heat insulated cushion of composite construction is five-layer structure, including setting successively from top to bottom Punching aluminium foil layer, nonwoven layer, flame retardant polyurethane layer, double-layer and the nonwoven layer put.
The density of the double-layer is 1.5-2.0kg/m2, make to obtain using following methods：
(1) stock up by following components and weight percent content：Rubber 30-40, mineral-filled object 57-69, graphite 1-3；
(2) above-mentioned raw materials are placed in mixer, controlled at 160-200 DEG C of batch mixing mixing 15-20min；
(3) in 130-170 DEG C of mill 10-20min after mixing；
(4) after mill, roll-in slice is carried out, last to carry out cut size as needed, making obtains double-layer.
The rubber is the EP rubbers using ethylene and propylene as primary raw material.
The mineral-filled object be calcium carbonate or barium sulfate,
The graphite particle size is 100-300 μm.
The thickness of the punching aluminium foil is 0.1-0.2mm.
The density of the non-woven fabrics is 80-120g/m2。
The flame retardant polyurethane layer be isocyanates, graphite powder, polyethers be by weight 1 ︰ (1-2) ︰ (8-12) mix, Foamed again, curing, section obtain, thickness 15-30mm.
The isocyanates can influence the cell size of PUR, toughness, and density controls NCO content 25- in isocyanates 35wt%, storage temperature are kept for 10-20 DEG C,
The polyethers can influence the inspiration speed of PUR foaming, and storage temperature is kept for 10-20 DEG C, while also big to abscess Small, toughness, density has a certain impact,
The granular size of the graphite powder is 100-500 μm, mainly plays fire retardation.
The production method of the automobile engine nacelle sound-heat insulated cushion of composite construction, using following steps：
(1) preparation of PUR materials：
Graphite powder and polyethers are uniformly mixed according to a ratio by (1-1),
(1-2) is added in the mixture obtained in isocyanates and step (1-1) in foaming machine by proportioning, controlled at 25-30 DEG C, curing 30-40min is to get to PUR materials；
The PUR materials obtained after foaming are sliced into the flame retardant polyurethane layer of thickness 15-30mm by (1-3)；
(2) it is hot-forming
Punching aluminium foil layer, non-woven fabrics, flame retardant polyurethane layer, double-layer and non-woven fabrics are arranged successively from top to bottom, Ran Houjin Row is hot-forming, and the temperature for controlling hot pressing is 150-170 DEG C, pressure 150-200bar, compression process 120-500s；
(3) cooling and shaping
Hot-forming product is cooled down into 30s-2min at room temperature and carries out cooling and shaping, that is, makes and obtains product.
Compared with prior art, the present invention increases high-low temperature resistant double-layer material composition, with existing similar no double-layer part phase Than on the basis of not influencing to noise sound-absorbing, 30%-40%, while high frequency and low frequency are also better than to noise soundproof effect Noise can play the role of blocking, failure, strengthen whole sound insulation, noise reduction so as to play, provide good sound insulation And heat insulation.
Double-layer is based on artificial rubber and mineral-filled mixing, is chemically reacted by mill and mixing, formation Ethylene-propylene-diene monomer glue-line, wherein graphite are black, have polishing and fire-retardant effect to double-layer, since ethylene propylene diene rubber is second The terpolymer of alkene, propylene and non-conjugated diene hydrocarbon can have anti-with high temperature resistant, resistance to oxidation and to polar solvent and chemicals Property, water absorption rate is low, has good insulation characterisitic, and strand is tightly combined, and has apparent blocking to sound wave, this kind of characteristic is suitble to Enging cabin working environment.
Since enging cabin working environment is severe, to double-layer high temperature resistant, it is ageing-resistant, fire-retardant have very high requirement, double-layer Belong to rubber, by hot mastication and layer of polyurethane, the non-woven fabrics of upper and lower layer, carry out molding autoadhesion, double-layer is to temperature ratio More sensitive, temperature is excessively high, can soften completely, and fracture is so as to just lose corresponding function, when temperature is too low, it is impossible to upper and lower layer Layer of polyurethane, non-woven fabrics molding autoadhesion.
Description of the drawings
Fig. 1 is the performance test figure of product in embodiment 1-3.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.Following embodiment will be helpful to this field Technical staff further understand the present invention, but the invention is not limited in any way.It should be pointed out that the general of this field For logical technical staff, without departing from the inventive concept of the premise, various modifications and improvements can be made.These are belonged to Protection scope of the present invention.
Embodiment 1
A kind of automobile engine nacelle sound-heat insulated cushion of composite construction, is located in automobile engine, the sound-heat insulated cushion It is respectively the punching aluminium foil that first layer is 0.10mm thickness from surface layer to layer for five-layer structure, second layer density 100g/ m2Non-woven fabrics, third layer be density 13kg/m3Flame retardant polyurethane layer, the 4th layer be 1.5kg/m2Double-layer, layer 5 is 100g/m2 non-woven fabrics, wherein, flame retardant polyurethane layer passes through after being mixed by weight for 1 ︰, 1 ︰ 8 by isocyanates, graphite powder, polyethers It foams, cure and cut into slices to obtain, the temperature of curing is 25 DEG C, and the time of curing is 40min, and the thickness of flame retardant polyurethane layer is 25mm。
Double-layer makes to obtain using following methods：
(1) stock up by following components and weight percent content：Rubber 30%, mineral-filled object 69%, graphite 1%, The middle rubber used is using ethylene and propylene as the EP rubbers of primary raw material, and mineral-filled object is calcium carbonate, and graphite particle is big Small is 100 μm；
(2) above-mentioned raw materials are placed in mixer, controlled at 160 DEG C of batch mixing mixing 20min；
(3) in 130 DEG C of mill 20min after mixing；
(4) after mill, roll-in slice is carried out, last to carry out cut size as needed, making obtains double-layer.
The preparation method of automobile using PUR material engine bonnet parts, comprises the following steps：
(1) preparation of PUR materials：
Graphite powder and polyethers are uniformly mixed according to a ratio by (1-1),
(1-2) is added in the mixture obtained in isocyanates and step (1-1) in foaming machine by proportioning, controlled at 25 DEG C, curing 40min is to get to the PUR materials；
The PUR material cut into serving pieces that (1-3) will be obtained after foaming, specific thickness are cut into slices according to the requirement of client.
(2) it is hot-forming：
Punching aluminium foil layer, non-woven fabrics, flame retardant polyurethane layer, double-layer and non-woven fabrics are arranged successively from top to bottom, Ran Houjin Row is hot-forming, and the temperature for controlling hot pressing is 150 DEG C, pressure 200bar, compression process 500s；
(3) cooling and shaping：
Controlling cooling temperature, cooling time carries out cooling and shaping for 3min for room temperature, that is, makes and obtain product.
Embodiment 2
A kind of automobile engine nacelle sound-heat insulated cushion of composite construction is five-layer structure, including setting successively from top to bottom Punching aluminium foil layer, nonwoven layer, flame retardant polyurethane layer, double-layer and the nonwoven layer put.
The density of double-layer is 1.5kg/m2, the thickness of aluminium foil is punched as 0.1mm, and the density of non-woven fabrics is 80g/m2.It is fire-retardant poly- Urethane layer is that isocyanates, graphite powder, polyethers are that 1 ︰, 1 ︰ 8 are mixed by weight, then foamed, curing, section obtain, and thickness is 15mm, wherein, isocyanates can influence the cell size of PUR, toughness, and density controls NCO content 25- in isocyanates 35wt%, storage temperature are kept for 10 DEG C, and polyethers can influence the inspiration speed of PUR foaming, and storage temperature is kept for 10 DEG C, while also right Cell size, toughness, density have a certain impact, and the granular size of graphite powder is 100 μm, mainly plays fire retardation.
Double-layer makes to obtain using following methods：
(1) stock up by following components and weight percent content：Rubber 40%, mineral-filled object 57%, graphite 3%, The middle rubber used is using ethylene and propylene as the EP rubbers of primary raw material, and mineral-filled object is barium sulfate, and graphite particle is big Small is 200 μm；
(2) above-mentioned raw materials are placed in mixer, controlled at 180 DEG C of batch mixing mixing 20min；
(3) in 150 DEG C of mill 15min after mixing；
(4) after mill, roll-in slice is carried out, last to carry out cut size as needed, making obtains double-layer.
The production method of the automobile engine nacelle sound-heat insulated cushion of composite construction, using following steps：
(1) preparation of PUR materials：
Graphite powder and polyethers are uniformly mixed according to a ratio by (1-1),
(1-2) is added in the mixture obtained in isocyanates and step (1-1) in foaming machine by proportioning, controlled at 25 DEG C, curing 40min is to get to PUR materials；
The PUR materials obtained after foaming are sliced into the flame retardant polyurethane layer of thickness 15mm by (1-3)；
(2) it is hot-forming
Punching aluminium foil layer, non-woven fabrics, flame retardant polyurethane layer, double-layer and non-woven fabrics are arranged successively from top to bottom, Ran Houjin Row is hot-forming, and the temperature for controlling hot pressing is 150 DEG C, pressure 200bar, compression process 120s；
(3) cooling and shaping
Hot-forming product is cooled down into 30s at room temperature and carries out cooling and shaping, that is, makes and obtains product.
Embodiment 3
A kind of automobile engine nacelle sound-heat insulated cushion of composite construction is five-layer structure, including setting successively from top to bottom Punching aluminium foil layer, nonwoven layer, flame retardant polyurethane layer, double-layer and the nonwoven layer put, the density of double-layer is 2.0kg/m2, punching The thickness of aluminium foil is 0.2mm.The density of non-woven fabrics is 120g/m2.Flame retardant polyurethane layer is isocyanates, graphite powder, polyethers are pressed Weight ratio mixes for 1 ︰, 2 ︰ 12, then foamed, curing, section obtain, thickness 30mm.Isocyanates can influence the abscess of PUR Size, toughness, density control NCO content 35wt% in isocyanates, and storage temperature is kept for 20 DEG C, and polyethers can influence PUR foaming Inspiration speed, storage temperature is kept for 20 DEG C, while also to cell size, toughness, density has a certain impact, of graphite powder Grain size is 500 μm, mainly plays fire retardation.
Double-layer makes to obtain using following methods：
(1) stock up by following components and weight percent content：Rubber 35%, mineral-filled object 63%, graphite 2%, The middle rubber used is using ethylene and propylene as the EP rubbers of primary raw material, and mineral-filled object is calcium carbonate, and graphite particle is big Small is 300 μm；
(2) above-mentioned raw materials are placed in mixer, controlled at 200 DEG C of batch mixing mixing 15min；
(3) in 170 DEG C of mill 10min after mixing；
(4) after mill, roll-in slice is carried out, last to carry out cut size as needed, making obtains double-layer.
The production method of the automobile engine nacelle sound-heat insulated cushion of composite construction, using following steps：
(1) preparation of PUR materials：
Graphite powder and polyethers are uniformly mixed according to a ratio by (1-1),
(1-2) is added in the mixture obtained in isocyanates and step (1-1) in foaming machine by proportioning, controlled at 30 DEG C, curing 30min is to get to PUR materials；
The PUR materials obtained after foaming are sliced into the flame retardant polyurethane layer of thickness 15-30mm by (1-3)；
(2) it is hot-forming
Punching aluminium foil layer, non-woven fabrics, flame retardant polyurethane layer, double-layer and non-woven fabrics are arranged successively from top to bottom, Ran Houjin Row is hot-forming, and the temperature for controlling hot pressing is 170 DEG C, pressure 150bar, compression process 120s；
(3) cooling and shaping
Hot-forming product is cooled down into 2min at room temperature and carries out cooling and shaping, that is, makes and obtains product.
Fig. 1 is the detection data of product in embodiment 1-3, and from the results of view, embodiment 3 is best, and embodiment 1 is taken second place, real It is poor to apply example 2, i.e. the density of double-layer is 2.0kg/m2, the thickness for punching aluminium foil is 0.2mm.Isocyanates sheet material be 30mm, nothing The density of woven fabric is 120g/m2Combination it is optimal, it can be seen that increase the density or thickness of each layer, to the blocking of sound wave most It is good, while technological temperature is 170 DEG C, pressure 150bar, compression process 120s is also the preferably group for most saving time and the energy It closes, which kind of combination of materials client can need according to the considerations of own cost and vehicle.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited in above-mentioned Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow Ring the substantive content of the present invention.

Claims (9)

1. the automobile engine nacelle sound-heat insulated cushion of a kind of composite construction, which is characterized in that the sound-heat insulated cushion is five layers of knot Structure, including punching aluminium foil layer, nonwoven layer, flame retardant polyurethane layer, double-layer and the nonwoven layer set gradually from top to bottom.
A kind of 2. automobile engine nacelle sound-heat insulated cushion of composite construction according to claim 1, which is characterized in that institute The density for the double-layer stated is 1.5-2.0kg/m2。
A kind of 3. automobile engine nacelle sound-heat insulated cushion of composite construction according to claim 1, which is characterized in that institute The double-layer stated makes to obtain using following methods：
(1) stock up by following components and weight percent content：Rubber 30-40, mineral-filled object 57-69, graphite 1-3；
(2) above-mentioned raw materials are placed in mixer, controlled at 160-200 DEG C of batch mixing mixing 15-20min；
(3) in 130-170 DEG C of mill 10-20min after mixing；
(4) after mill, roll-in slice is carried out, last to carry out cut size as needed, making obtains double-layer.
4. a kind of automobile engine nacelle sound-heat insulated cushion of composite construction according to claim 3, which is characterized in that
The rubber is the EP rubbers using ethylene and propylene as primary raw material,
The mineral-filled object be calcium carbonate or barium sulfate,
The graphite particle size is 100-300 μm.
A kind of 5. automobile engine nacelle sound-heat insulated cushion of composite construction according to claim 1, which is characterized in that institute The thickness for the punching aluminium foil stated is 0.1-0.2mm.
A kind of 6. automobile engine nacelle sound-heat insulated cushion of composite construction according to claim 1, which is characterized in that institute The density for the non-woven fabrics stated is 80-120g/m2。
A kind of 7. automobile engine nacelle sound-heat insulated cushion of composite construction according to claim 1, which is characterized in that institute The flame retardant polyurethane layer stated be isocyanates, graphite powder, polyethers be by weight 1 ︰ (1-2) ︰ (8-12) mix, then it is foamed, Curing, section obtain, thickness 15-30mm.
8. a kind of automobile engine nacelle sound-heat insulated cushion of composite construction according to claim 7, which is characterized in that
NCO content 25-35wt% in the isocyanates, storage temperature are kept for 10-20 DEG C,
The storage temperature of the polyethers is kept for 10-20 DEG C,
The granular size of the graphite powder is 100-500 μm.
9. the production method of the automobile engine nacelle sound-heat insulated cushion of composite construction as described in claim 1, feature exist In this method uses following steps：
(1) preparation of PUR materials：
Graphite powder and polyethers are uniformly mixed according to a ratio by (1-1),
(1-2) is added in the mixture obtained in isocyanates and step (1-1) in foaming machine by proportioning, controlled at 25- 30 DEG C, curing 30-40min is to get to PUR materials；
The PUR materials obtained after foaming are sliced into the flame retardant polyurethane layer of thickness 15-30mm by (1-3)；
(2) it is hot-forming
Punching aluminium foil layer, non-woven fabrics, flame retardant polyurethane layer, double-layer and non-woven fabrics are arranged successively from top to bottom, then carry out heat Molded, the temperature for controlling hot pressing is 150-170 DEG C, pressure 150-200bar, compression process 120-500s；
(3) cooling and shaping
Hot-forming product is cooled down into 30s-2min at room temperature and carries out cooling and shaping, that is, makes and obtains product.
CN201611071061.2A 2016-11-29 2016-11-29 Automobile engine nacelle sound-heat insulated cushion of composite construction and preparation method thereof Pending CN108116007A (en)

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CN109249673A (en) * 2018-09-20 2019-01-22 无锡吉兴汽车部件有限公司 A kind of production method of front wall sound insulation pad of automobile driving cabin
CN109483976A (en) * 2018-09-25 2019-03-19 上海新安汽车隔音毡有限公司 A kind of motor in electric automobile sound insulating pad and preparation method thereof
CN109605848A (en) * 2018-11-23 2019-04-12 广州市盈尔安防火材料有限公司 A kind of board substrate and manufacturing method with sound insulation damping insulation antiseptic function
CN109851926A (en) * 2018-12-28 2019-06-07 宁国绿谷新材料有限公司 A kind of production method and product encrypting gunslinging pad
CN110920179A (en) * 2019-12-05 2020-03-27 上海新安汽车隔音毡有限公司 Electric automobile battery sound-proof housing part and manufacturing method thereof
CN111186200A (en) * 2020-01-16 2020-05-22 上海新安汽车隔音毡有限公司 Carpet for automobile and manufacturing method thereof
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CN109249673A (en) * 2018-09-20 2019-01-22 无锡吉兴汽车部件有限公司 A kind of production method of front wall sound insulation pad of automobile driving cabin
CN109483976A (en) * 2018-09-25 2019-03-19 上海新安汽车隔音毡有限公司 A kind of motor in electric automobile sound insulating pad and preparation method thereof
CN109483976B (en) * 2018-09-25 2021-08-03 上海新安汽车隔音毡有限公司 Sound insulation pad for electric automobile motor and manufacturing method thereof
CN109605848A (en) * 2018-11-23 2019-04-12 广州市盈尔安防火材料有限公司 A kind of board substrate and manufacturing method with sound insulation damping insulation antiseptic function
CN109851926A (en) * 2018-12-28 2019-06-07 宁国绿谷新材料有限公司 A kind of production method and product encrypting gunslinging pad
CN110920179A (en) * 2019-12-05 2020-03-27 上海新安汽车隔音毡有限公司 Electric automobile battery sound-proof housing part and manufacturing method thereof
CN111186200A (en) * 2020-01-16 2020-05-22 上海新安汽车隔音毡有限公司 Carpet for automobile and manufacturing method thereof
CN113696585A (en) * 2021-07-09 2021-11-26 牛红武 Sound-insulation anti-skidding volcanic flexible material and preparation method thereof

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