CN213920039U

CN213920039U - Noise-reduction type composite material for vehicle

Info

Publication number: CN213920039U
Application number: CN202022262374.4U
Authority: CN
Inventors: 魏志祥; 胡志伟; 杨超
Original assignee: Guangde Xiangyuan New Material Technology Co ltd
Current assignee: Guangde Xiangyuan New Material Technology Co ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-08-10
Anticipated expiration: 2030-10-10

Abstract

The utility model relates to a noise reduction type composite material for vehicles, which comprises a bottom substrate and a top pvc wear-resistant plate, wherein a polypropylene foaming layer, a reinforcing rib layer, a noise reduction layer with holes and a noise reduction layer are sequentially arranged between the substrate and the pvc wear-resistant plate from bottom to top; the base plate is made of metal materials and serves as an outer wall of an automobile, and the pvc wear-resisting plate serves as an inner wall of the automobile. The utility model provides an it carries out the separation not only to external noise effectively to fall the automobile-used combined material of type of making an uproar, can also satisfy automobile strength and lightweight demand simultaneously, economical and practical, better noise reduction effect can improve the travelling comfort that the passenger took.

Description

Noise-reduction type composite material for vehicle

Technical Field

The utility model relates to the technical field of automobiles, especially, relate to a noise reduction type composite material for vehicle.

Background

The noise affects human health in many ways, the noise acts on the central nervous system of a human body, so that the excitation and the inhibition balance disorder of cerebral cortex of people are caused, conditioned reflex is caused to be abnormal, cerebral vascular tension is damaged, symptoms such as dizziness, headache, insomnia and hypomnesis can appear, serious people can generate confusion, the problems such as dysphoria, insomnia, neurasthenia, splenic qi irritability and the like are caused, the reaction of the people is slow, the working efficiency is reduced, the attention is dispersed, and work accidents are caused. The greater the intensity of the noise, the higher the frequency, the longer the action time, and the less the personal endurance, the more serious the hazard. Statistical data table, noise below 80dB (A) will not cause noise deafness; noise of 80dB (A) to 85dB (A) causes slight hearing loss; the noise of 85dB (A) -100 dB (A) can cause a certain amount of noise deafness; above 100db (a), a considerable amount of noise deafness is caused.

In order to improve riding comfort, people hope that the automobile can block the transmission of external noise when riding, the existing automobile door or automobile ceiling is made of large-sized aluminum alloy steel plates, and although the requirement of light weight can be met, the external noise cannot be well blocked, so that the riding comfort cannot meet the requirement of users.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a noise reduction type composite material for a vehicle, which is used to solve the problem of insufficient riding comfort caused by the failure of the conventional vehicle body.

The utility model provides a noise reduction type composite material for vehicles, which comprises a bottom substrate and a top pvc wear-resistant plate, wherein a polypropylene foaming layer, a reinforcing rib layer, a noise reduction layer with holes and a noise reduction layer are sequentially arranged between the substrate and the pvc wear-resistant plate from bottom to top; the base plate is made of metal materials and serves as an outer wall of an automobile, and the pvc wear-resisting plate serves as an inner wall of the automobile.

Furthermore, the noise reduction holes in the noise reduction layer with holes are trapezoidal holes, and the cross-sectional sizes of the noise reduction holes are gradually reduced along the propagation direction of sound waves.

Further, the perforated noise reduction layer is a glass fiber cotton layer.

Furthermore, the reinforcing rib layer is a composite fiber layer, reinforcing ribs are embedded in the composite fiber layer, and the reinforcing ribs are arranged in a grid shape or are integrally arranged in a grid shape.

Further, the substrate is a steel plate or an aluminum alloy plate.

Further, the sound-deadening layer is a polyurethane sound-deadening sponge layer.

Further, the polypropylene foaming layer contains honeycomb-shaped foam holes, the diameter of each foam hole is 0.5-0.8 mm, and the porosity is 95%.

Furthermore, the thickness of the substrate is 1.5-2.3 mm, the thickness of the pvc wear-resistant plate is 1.2-1.8 mm, the thickness of the polypropylene foaming layer is 2.5-5.5 mm, and the thickness of the reinforcing rib layer, the thickness of the perforated noise reduction layer and the thickness of the sound attenuation layer are 1.5-2 mm.

Furthermore, the base plate, the polypropylene foaming layer, the reinforcing rib layer, the noise reduction layer with holes, the noise reduction layer and the pvc wear-resisting plate are sequentially bonded by polyurethane foaming glue.

Further, the interval of the corresponding position department border of polypropylene foaming layer, strengthening rib layer, foraminiferous noise reduction layer and amortization layer is provided with a plurality of through-holes, the amortization layer and the equal fixed mounting in the through-hole of polypropylene foaming layer towards the one side in the outside has a compact heap, and is a plurality of expansion bolts has all been inserted in the through-hole, the bolt is passed in proper order from outside to inside the amortization layer, foraminiferous noise reduction layer, strengthening rib layer and polypropylene foaming layer extend to the bottom base plate with bottom base plate threaded connection, expansion bolts with compact heap threaded connection.

The utility model discloses compare prior art can reach beneficial effect do:

the utility model provides a type of making an uproar automobile-used combined material that falls adopts the metal level as the base plate, combines the mechanical strength that setting up on strengthening rib layer can ensure door or ceiling etc. improves mechanical properties. The inner wall adopts the pvc antifriction plate, can improve wear resistance, consequently can increase of service life, and the inner wall adopts the pvc antifriction plate can also alleviate the weight of automobile body, reduces the oil consumption. The composite material further comprises a sound attenuation layer, a noise reduction layer with holes and a polypropylene foaming layer, wherein the sound attenuation layer can adopt a polyurethane sound attenuation sponge layer, and has the characteristics of elasticity and softness, so that the vibration can be attenuated, and the sound insulation and shock absorption effects are achieved. The weight of the whole composite material can be reduced by the arrangement of the noise reduction holes in the noise reduction layer with the holes, so that the light weight is realized, and the oil consumption is reduced. The polypropylene foaming layer has good noise reduction and energy absorption effects and heat resistance, can effectively separate external noise, and can meet the requirements of automobile strength and light weight, and the polypropylene foaming layer is economical and practical, and the good noise reduction effect can improve the comfort of passengers.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of a noise reduction type composite material for a vehicle according to the present invention;

fig. 2 is a schematic structural diagram of a second embodiment of the noise reduction type composite material for a vehicle according to the present invention;

description of reference numerals:

the composite material comprises 1-pvc wear-resistant plates, 2-noise reduction layers, 3-perforated noise reduction layers, 4-noise reduction holes, 5-reinforcing rib layers, 6-reinforcing ribs, 7-polypropylene foaming layers and 8-base plates.

Detailed Description

The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of this application, and together with the embodiments of the invention, serve to explain the principles of the invention and not to limit its scope.

As shown in fig. 1, an embodiment of the present invention provides a noise reduction type composite material for a vehicle, including a bottom substrate 8 and a top pvc wear plate 1, wherein a polypropylene foaming layer 7, a reinforcing rib layer 5, a noise reduction layer with holes 3 and a noise reduction layer 2 are sequentially disposed between the substrate 8 and the pvc wear plate 1 from bottom to top; the base plate 8 is made of metal materials and serves as an outer wall of an automobile, and the pvc wear-resistant plate serves as an inner wall of the automobile.

The noise-reduction type composite material for the automobile can be used for manufacturing automobile doors or automobile body structures such as automobile roofs. The inner wall of the noise-reduction type automobile composite material is a pvc wear-resistant layer 1, so that the wear resistance of the automobile surface layer can be improved, the service life is prolonged, and the requirements of light weight and cost reduction of an automobile can be met.

The sound-deadening layer 2 is made of a polyurethane sound-deadening sponge layer, and has the characteristics of elasticity and softness, so that the vibration can be attenuated, and the sound-deadening and shock-absorbing effects can be achieved. The sound-deadening layer 2 can also be made of one or a mixture of glass wool, polyester fiber wool sound-insulation wool, centrifugal glass wool, rock wool, mineral wool and plant fiber. When the sound is retrieved by the sound attenuation layer 2 and then transmitted to the perforated noise reduction layer 3, friction is generated between the sound wave and the hole wall in the perforated noise reduction layer 3, so that the sound wave is absorbed and attenuated, and the transmission of the noise is further blocked.

The noise reduction holes 4 in the noise reduction layer with holes 3 are preferably trapezoidal holes, a plurality of the noise reduction holes 4 are arranged on the noise reduction layer with holes 3 at intervals, and the cross-sectional sizes of the noise reduction holes 4 are gradually reduced along the propagation direction of sound waves. Will the reflection number of times behind the layer 3 of making an uproar falls in outside sound wave transmission can be increased in trapezoidal hole, and then the layer 3 of making an uproar falls in the increase sound wave energy of inhaling, plays to outside sound wave attenuation effect, improves the layer of making an uproar falls in the sound absorption of the foraminiferous layer of making an uproar and falls the shock attenuation effect. The perforated noise reduction layer is made of glass wool, is formed by processing glass in a molten state by a centrifugal blowing process, and has good sound absorption characteristic, the perforated noise reduction layer 3 can absorb sound energy outside an automobile in a large amount, reduce reverberation time, reduce noise entering the automobile, and further improve sound insulation effect.

In order to reinforce the composite material and improve the overall structural strength, a reinforcing rib layer 5 is further arranged between the noise reduction layer with holes 3 and the polypropylene foaming layer 7, the reinforcing rib layer 5 is a composite fiber material layer, reinforcing ribs 6 are embedded in the composite fiber material layer, and the reinforcing ribs 6 are arranged in a grid shape or are integrally arranged in a grid shape, as shown in fig. 2. The composite fiber material layer can improve the strength of the composite material, so that the automobile ceiling has better mechanical performance, and the noise reduction effect can be achieved. The reinforcing ribs 6 can be made of polyethylene supporting materials, and can have the noise reduction effect.

In order to improve the noise blocking effect, the inner side of the reinforcing rib layer 5 is also provided with a polypropylene foaming layer 7, the polypropylene foaming layer 7 is internally provided with honeycomb-shaped cells, the diameters of the cells are 0.5-0.8 mm, and the porosity is 95%. The honeycomb cells are capable of absorbing sound wave advancement. The polypropylene foaming layer 7 has excellent heat resistance, the highest heat-resistant temperature can reach 130 ℃, and meanwhile, the density is small, the weight is light, and therefore, the light weight requirement can be met. In addition, the foaming material has a closed-hole type independent cell structure, so that sound waves can be further attenuated, and the effect of blocking external noise is achieved.

In order to improve the noise reduction effect, the base plate 8, the polypropylene foam layer 7, the reinforcing rib layer 5, the noise reduction layer 3 with holes, the sound attenuation layer 2 and the pvc wear plate 1 are sequentially bonded by polyurethane foam rubber. The polyurethane foaming adhesive can play a role in firm bonding and filling aiming at a complex bonding surface.

In order to ensure the strength of the composite material, the substrate 8 may be a steel plate or an aluminum alloy plate, and in order to reduce the weight of the vehicle body, the substrate 8 is preferably an aluminum alloy plate.

Preferably, the thickness of the base plate 8 is 1.5mm to 2.3mm, the thickness of the pvc wear plate 1 is 1.2mm to 1.8mm, the thickness of the polypropylene foam layer 7 is 2.5mm to 5.5mm, and the thickness of each of the reinforcing rib layer 5, the perforated noise reduction layer 3 and the sound attenuation layer 2 is 1.5mm to 2 mm.

The base plate 8, the polypropylene foaming layer 7, the reinforcing rib layer 5, the perforated noise reduction layer 3, the sound attenuation layer 2 and the pvc wear plate 1 are sequentially bonded by polyurethane foaming glue. Or, in order to improve the connection strength, a plurality of through holes are arranged at intervals at the edge of the corresponding positions of the polypropylene foaming layer 7, the reinforcing rib layer 5, the noise reduction layer with holes 3 and the noise reduction layer 2, a pressing block (not shown in the figure) is fixedly arranged on the side, facing outwards, of the through holes of the noise reduction layer 2 and the polypropylene foaming layer 7, expansion bolts (not shown in the figure) are inserted into the through holes, and sequentially penetrate through the noise reduction layer 2, the noise reduction layer with holes 3, the reinforcing rib layer 5 and the polypropylene foaming layer 7 from outside to inside and extend to the bottom substrate 8 to be in threaded connection with the bottom substrate 8, and the expansion bolts are in threaded connection with the pressing block.

The utility model provides a type of making an uproar automobile-used combined material that falls adopts the metal level as base plate 8, combines the mechanical strength that setting up of strengthening rib layer 5 can ensure door or ceiling etc. improves mechanical properties. The inner wall adopts pvc antifriction plate 1, can improve wear resistance, consequently can increase of service life, and adopts pvc antifriction plate 1 can also alleviate the weight of automobile body, reduces the oil consumption. The composite material further comprises a sound-deadening layer 2, a noise-reducing layer 3 with holes and a polypropylene foaming layer 7, wherein the sound-deadening layer 2 can adopt a polyurethane sound-deadening sponge layer, and has the characteristics of elasticity and softness, so that the vibration can be attenuated, and the sound-deadening and shock-absorbing effects are achieved. The arrangement of the noise reduction holes 4 in the noise reduction layer 3 with the holes can reduce the weight of the whole composite material, realize light weight and reduce oil consumption. Polypropylene foaming layer 7 possesses better noise reduction and energy absorption effect and heat resistance, not only can carry out the separation to external noise effectively, can also satisfy automobile strength and lightweight demand simultaneously, and economical and practical, better noise reduction effect can improve the travelling comfort that the passenger took.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.

Claims

1. The noise reduction type composite material for the vehicle is characterized by comprising a base plate at the bottom layer and a pvc wear-resistant plate at the top layer, wherein a polypropylene foaming layer, a reinforcing rib layer, a noise reduction layer with holes and a noise reduction layer are sequentially arranged between the base plate and the pvc wear-resistant plate from bottom to top; the base plate is made of metal materials and serves as an outer wall of an automobile, and the pvc wear-resisting plate serves as an inner wall of the automobile.

2. The noise-reducing composite material for vehicle according to claim 1, wherein the noise-reducing holes in the perforated noise-reducing layer are trapezoidal holes, and the cross-sectional size of the noise-reducing holes gradually decreases along the propagation direction of the sound wave.

3. The noise-reducing vehicular composite material according to claim 1, wherein the perforated noise-reducing layer is a fiberglass cotton layer.

4. The noise reduction type composite material for the vehicle as claimed in claim 1, wherein the reinforcing rib layer is a composite fiber layer, reinforcing ribs are embedded in the composite fiber layer, and the reinforcing ribs are arranged in a grid shape or are integrally arranged in a grid shape.

5. The noise-reducing automotive composite material according to claim 1, wherein the base plate is a steel plate or an aluminum alloy plate.

6. The noise-reducing vehicular composite according to claim 1, wherein the sound-deadening layer is a polyurethane sound-deadening sponge layer.

7. The noise-reducing composite material for vehicles according to claim 1, wherein the polypropylene foam layer comprises honeycomb-shaped cells, the diameter of the cells is 0.5mm to 0.8mm, and the porosity is 95%.

8. The noise reduction type composite material for the vehicle as claimed in claim 1, wherein the substrate has a thickness of 1.5mm to 2.3mm, the pvc wear-resistant plate has a thickness of 1.2mm to 1.8mm, the polypropylene foam layer has a thickness of 2.5mm to 5.5mm, and the reinforcing rib layer, the noise reduction layer with holes and the noise reduction layer have thicknesses of 1.5mm to 2 mm.

9. The noise-reducing composite material for the vehicle as claimed in claim 1, wherein the base plate, the polypropylene foam layer, the reinforcing rib layer, the noise-reducing layer with holes, the noise-reducing layer and the pvc wear plate are bonded in sequence by polyurethane foam rubber.

10. The noise reduction type composite material for the vehicle as claimed in claim 1, wherein a plurality of through holes are formed at intervals at the edge of the corresponding positions of the polypropylene foaming layer, the reinforcing rib layer, the noise reduction layer with holes and the noise reduction layer, compression blocks are fixedly mounted on the surfaces of the noise reduction layer and the polypropylene foaming layer facing outwards in the through holes, expansion bolts are inserted into the through holes, the bolts sequentially penetrate through the noise reduction layer, the noise reduction layer with holes, the reinforcing rib layer and the polypropylene foaming layer from outside to inside and extend to a bottom substrate to be in threaded connection with the bottom substrate, and the expansion bolts are in threaded connection with the compression blocks.