CN102529839B - Multilayer-structure sound-proof and heat-proof cushion used for automotive engine cabin and manufacture method thereof - Google Patents
Multilayer-structure sound-proof and heat-proof cushion used for automotive engine cabin and manufacture method thereof Download PDFInfo
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- CN102529839B CN102529839B CN201010610013.2A CN201010610013A CN102529839B CN 102529839 B CN102529839 B CN 102529839B CN 201010610013 A CN201010610013 A CN 201010610013A CN 102529839 B CN102529839 B CN 102529839B
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Abstract
The invention relates to a multilayer-structure sound-proof and heat-proof cushion used for an automotive engine cabin and a manufacture method thereof. The sound-proof and heat-proof cushion is in a three-layer structure, wherein the upper surface layer and the lower surface layer are non-woven fabrics of which the density is 100g/cm<2>, and the middle layer is a flame-retardant polyurethane layer of which the density is 13-18kg/m<3>; graphite powder, polyether and isocyanate are mixed and sliced to obtain a flame-retardant polyurethane foaming layer; and then, the polyurethane foaming layer and the non-woven fabrics are placed in a forming die and are pressed to obtain the multilayer-structure sound-proof and heat-proof cushion used for the automotive engine cabin. Compared with the prior art, the multilayer-structure sound-proof and heat-proof cushion can play roles in absorbing and attenuating high-frequency and low-frequency noise so as to play a role in enhancing the integral sound-proof and noise-reduction effect. Compared with the existing structure, the multilayer-structure sound-proof and heat-proof cushion has the advantage that the weight of parts is lowered by 70%.
Description
Technical field
The present invention relates to a kind of sound-heat insulated cushion and manufacture method thereof, especially relate to a kind of sound-heat insulated cushion and manufacture method thereof for automobile engine nacelle of multiple-structure.
Background technology
Before at present in the machinery space of auto trade, coaming plate mainly comprises two kinds of structures: (1) overwhelming majority adopts resin-oatmeal to add glass fiber material and makes part.Because the driving engine in machinery space can produce larger noise and very high temperature when working, adopt above-mentioned material pts wt large, sound-insulating and heat-insulating effect is general, and glass is very large to the pollution of environment.(2) composite structure of resin-oatmeal+cotton fiber: Heavy Weight, cost is high, complex process.
Summary of the invention
Object of the present invention is exactly to provide a kind of destruction to environment little in order to overcome the defect of above-mentioned prior art existence, sound-heat insulated cushion and manufacture method thereof for the automobile engine nacelle of lightweight multiple-structure.
Object of the present invention can be achieved through the following technical solutions:
An automobile engine nacelle sound-heat insulated cushion for multiple-structure, is characterized in that, this sound-heat insulated cushion is three-decker, and upper surface layer and undersurface layer are the nonwoven fabrics of density 100g/cm2, and interlayer is density 13～18kg/m
3flame retardant polyurethane layer.
The upper surface of described upper surface layer can also arrange the aluminium foil reflecting horizon that a layer thickness is 0.1mm.
A manufacture method for sound-heat insulated cushion for the automobile engine nacelle of multiple-structure, is characterized in that, the method comprises the following steps:
(1) making of flame retardant polyurethane foaming layer:
1. by graphite powder, polyethers, be 1:(8～12 by weight) mix, controlling temperature is 20～26 ℃, mixes 30～40min, obtains graphite powder, polyether mixture;
2. by isocyanates and graphite powder, polyether mixture, be 1:(1～2 by weight) add in foaming machine, controlling temperature is 25～30 ℃, slaking 30～40min;
3. the material after foaming is cut into slices, control slice thickness is 15～30mm, deposits 24 hours after section, obtains flame retardant polyurethane foaming layer;
(2) compression molding:
1. the surface temperature of forming mould is heated to 150～170 ℃, and keeps 30～40min;
2. upper strata and the lower floor at polyurethane foaming layer respectively spreads layer of non-woven fabric;
3. polyurethane foaming layer and nonwoven fabrics are placed in to forming mould, control presssure is that 150～200bar carries out matched moulds, and compression process 120～500s obtains the automobile engine nacelle sound-heat insulated cushion of multiple-structure.
The upper surface of the nonwoven fabrics on polyurethane foaming layer upper strata can also arrange the aluminium foil reflecting horizon that a layer thickness is 0.1mm.
Compared with prior art, the sound-heat insulated cushion that the present invention obtains is mainly comprised of the very low flame retardant polyurethane expanded material of a kind of density, do not adopt any glass and resin material, destruction to environment is little, lightweight, weight can reduce 70%, to high frequency and low frequency noise, can play absorption, attenuation, thereby can also play the effect of strengthening whole sound insulation, noise reduction, good sound insulation and effect of heat insulation is provided.
Accompanying drawing explanation
Fig. 1 is the structural representation that embodiment 1 manufactures the sound-heat insulated cushion obtaining;
Fig. 2 is the structural representation that embodiment 2 manufactures the sound-heat insulated cushion obtaining.
In figure, 1 is that nonwoven fabrics, 2 is that flame retardant polyurethane foaming layer, 3 is aluminium foil reflecting horizon.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
A manufacture method for sound-heat insulated cushion for the automobile engine nacelle of 3-tier architecture, manufactures the structure of the sound-heat insulated cushion obtaining as shown in Figure 1, and the method comprises the following steps:
(1) making of flame retardant polyurethane foaming layer:
1. controlling foaming ambient temperature is 23 ℃;
2. by graphite powder, polyethers, be that 1:10 mixes by weight, control incorporation time is 30min, obtains graphite powder, polyether mixture;
3. isocyanates and graphite powder, polyether mixture are added respectively in foaming machine, regulating the weight ratio of isocyanates and graphite powder, polyether mixture is 1:1, and mixing temperature is 28 ℃, slaking 30min;
4. foam after slaking completes and cut into slices, control slice thickness is 20mm, deposits 24 hours after section;
(2) compression molding:
1. foaming is carried out mold pressing procedure after having cut into slices 24 hours;
2. the surface temperature of forming mould is heated to 160 ℃, and keeps 30min;
3. the bilevel outside face of polyurethane foaming layer 1 is respectively spread to one deck waterproof, grease proofing nonwoven fabrics 2;
4. polyurethane foaming layer 1 and nonwoven fabrics 2 are placed in to forming mould, control presssure is that 180bar carries out the automobile engine nacelle sound-heat insulated cushion that matched moulds compression process 300s obtains a kind of multiple-structure.
Embodiment 2
A manufacture method for sound-heat insulated cushion for the automobile engine nacelle of 4 layers of structure, manufactures the structure of the sound-heat insulated cushion obtaining as shown in Figure 2, and the method comprises the following steps:
(1) making of flame retardant polyurethane foaming layer:
1. controlling foaming ambient temperature is 23 ℃;
2. by graphite powder, polyethers, be that 1:10 mixes by weight, control incorporation time is 30min, obtains graphite powder, polyether mixture;
3. isocyanates and graphite powder, polyether mixture are added respectively in foaming machine, regulating the weight ratio of isocyanates and graphite powder, polyether mixture is 1:1, and mixing temperature is 28 ℃, slaking 30min;
4. foam after slaking completes and cut into slices, control slice thickness is 20mm, deposits 24 hours after section;
(2) compression molding:
1. foaming is carried out mold pressing procedure after having cut into slices 24 hours;
2. the surface temperature of forming mould is heated to 160 ℃, and keeps 30min;
3. the bilevel outside face of polyurethane foaming layer 1 is respectively spread to one deck waterproof, grease proofing nonwoven fabrics 2;
4. expanded material and nonwoven fabrics are placed in to forming mould, control presssure is that 180bar carries out matched moulds compression process 300s;
5. by aluminium foil moulding in advance in Prepressing working, be attached to part assigned position and press again 5s, in the plating of the outside of upper strata nonwoven fabrics 2, establish aluminium foil reflecting horizon 3, obtain a kind of automobile engine nacelle sound-heat insulated cushion of multiple-structure.
Embodiment 3
A manufacture method for sound-heat insulated cushion for the automobile engine nacelle of 3-tier architecture, the method comprises the following steps:
(1) making of flame retardant polyurethane foaming layer:
1. controlling foaming ambient temperature is 20 ℃;
2. by graphite powder, polyethers, be that 1:8 mixes by weight, control incorporation time is 40min, obtains graphite powder, polyether mixture;
3. isocyanates and graphite powder, polyether mixture are added respectively in foaming machine, regulating the weight ratio of isocyanates and graphite powder, polyether mixture is 1:1, and mixing temperature is 25 ℃, and slaking 40min obtains density 13kg/m
3flame retardant polyurethane layer;
4. foam after slaking completes and cut into slices, control slice thickness is 15mm, deposits 24 hours after section;
(2) compression molding:
1. foaming is carried out mold pressing procedure after having cut into slices 24 hours;
2. the surface temperature of forming mould is heated to 150 ℃, and keeps 30min;
3. the bilevel outside face of polyurethane foaming layer is respectively spread to the waterproof that one deck density is 100g/cm2, grease proofing nonwoven fabrics;
4. polyurethane foaming layer and nonwoven fabrics are placed in to forming mould, control presssure is that 150bar carries out the automobile engine nacelle sound-heat insulated cushion that matched moulds compression process 500s obtains a kind of multiple-structure.
Embodiment 4
A kind of automobile engine nacelle of 4 layers of structure comprises the following steps by manufacture method the method for sound-heat insulated cushion:
(1) making of flame retardant polyurethane foaming layer:
1. controlling foaming ambient temperature is 26 ℃;
2. by graphite powder, polyethers, be that 1:12 mixes by weight, control incorporation time is 30min, obtains graphite powder, polyether mixture;
3. isocyanates and graphite powder, polyether mixture are added respectively in foaming machine, regulating the weight ratio of isocyanates and graphite powder, polyether mixture is 1:2, and mixing temperature is 30 ℃, and slaking 40min obtains density 18kg/m
3flame retardant polyurethane layer;
4. foam after slaking completes and cut into slices, control slice thickness is 30mm, deposits 24 hours after section;
(2) compression molding:
1. foaming is carried out mold pressing procedure after having cut into slices 24 hours;
2. the surface temperature of forming mould is heated to 170 ℃, and keeps 40min;
3. the bilevel outside face of polyurethane foaming layer is respectively spread to the waterproof that one deck density is 100g/cm2, grease proofing nonwoven fabrics;
4. expanded material and nonwoven fabrics are placed in to forming mould, control presssure is that 200bar carries out matched moulds compression process 120s;
5. by aluminium foil moulding in advance in Prepressing working, be attached to part assigned position and press again 5s, in the plating of the outside of upper strata nonwoven fabrics, establish the aluminium foil reflecting horizon that last layer thickness is 0.1mm, obtain a kind of automobile engine nacelle sound-heat insulated cushion of multiple-structure.
Claims (2)
1. a manufacture method for sound-heat insulated cushion for the automobile engine nacelle of multiple-structure, is characterized in that, the method comprises the following steps:
(1) making of flame retardant polyurethane foaming layer:
1. by graphite powder, polyethers, be 1:(8～12 by weight) mix, controlling temperature is 20～26 ℃, mixes 30～40min, obtains graphite powder, polyether mixture;
2. by isocyanates and graphite powder, polyether mixture, be 1:(1～2 by weight) add in foaming machine, controlling temperature is 25～30 ℃, slaking 30～40min;
3. the material after foaming is cut into slices, control slice thickness is 15～30mm, deposits 24 hours after section, obtains flame retardant polyurethane foaming layer;
(2) compression molding:
1. the surface temperature of forming mould is heated to 150～170 ℃, and keeps 30～40min;
2. upper strata and the lower floor at polyurethane foaming layer respectively spreads layer of non-woven fabric;
3. polyurethane foaming layer and nonwoven fabrics are placed in to forming mould, control presssure is that 150～200bar carries out matched moulds, compression process 120～500s obtains the automobile engine nacelle sound-heat insulated cushion of multiple-structure, this sound-heat insulated cushion is three-decker, and upper surface layer and undersurface layer are density 100g/m
2nonwoven fabrics, interlayer is density 13～18kg/m
3flame retardant polyurethane layer.
2. the manufacture method of sound-heat insulated cushion for the automobile engine nacelle of a kind of multiple-structure according to claim 1, is characterized in that, the upper surface of the nonwoven fabrics on polyurethane foaming layer upper strata also arranges the aluminium foil reflecting horizon that a layer thickness is 0.1mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010610013.2A CN102529839B (en) | 2010-12-23 | 2010-12-23 | Multilayer-structure sound-proof and heat-proof cushion used for automotive engine cabin and manufacture method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010610013.2A CN102529839B (en) | 2010-12-23 | 2010-12-23 | Multilayer-structure sound-proof and heat-proof cushion used for automotive engine cabin and manufacture method thereof |
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| CN102529839A CN102529839A (en) | 2012-07-04 |
| CN102529839B true CN102529839B (en) | 2014-08-27 |
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| CN103182810B (en) * | 2011-12-28 | 2016-01-06 | 上海新安汽车隔音毡有限公司 | A kind of enging cabin composite stratotype sound-heat insulated cushion |
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| CN104943051A (en) * | 2015-06-25 | 2015-09-30 | 安徽志诚机电零部件有限公司 | Foaming method in manufacturing of car thermal insulation layer |
| CN105235571B (en) * | 2015-09-23 | 2019-03-05 | 江苏泛亚微透科技股份有限公司 | The foot pad and preparation method thereof of the non-woven fabrics cladding regeneration foam mixing sheet material of automobile internal partition sound |
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| CN106012542B (en) * | 2016-07-05 | 2018-05-15 | 东华大学 | A kind of anti-static and abrasion-resistant damage noise reduction sound insulating material and preparation method thereof |
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| CN108116007A (en) * | 2016-11-29 | 2018-06-05 | 上海新安汽车隔音毡有限公司 | Automobile engine nacelle sound-heat insulated cushion of composite construction and preparation method thereof |
| CN109826785A (en) * | 2017-11-23 | 2019-05-31 | 上海新安汽车隔音毡有限公司 | Fuel pump the cover and preparation method thereof in a kind of automobile engine nacelle |
| CN109849469A (en) * | 2017-11-30 | 2019-06-07 | 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 |
| CN112549704A (en) * | 2020-12-02 | 2021-03-26 | 宁波耀众模塑科技有限公司 | High-strength polyurethane plate and processing technology and application thereof |
| CN114055697A (en) * | 2021-12-02 | 2022-02-18 | 上海新安汽车隔音毡有限公司 | Sound insulation pad for automobile engine and manufacturing method thereof |
| CN115584595B (en) * | 2022-12-09 | 2023-02-28 | 石家庄海飞音机电设备有限公司 | Soundproof cotton and preparation method thereof |
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