CN114874726A - Lightweight damping material, lightweight damping fin and preparation method thereof - Google Patents

Lightweight damping material, lightweight damping fin and preparation method thereof Download PDF

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CN114874726A
CN114874726A CN202210697096.6A CN202210697096A CN114874726A CN 114874726 A CN114874726 A CN 114874726A CN 202210697096 A CN202210697096 A CN 202210697096A CN 114874726 A CN114874726 A CN 114874726A
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damping
lightweight
light
weight
parts
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李虹征
周开爵
罗锦超
于日志
杨自祺
杨蒙蒙
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Guangdong Sunlite Science & Technology Co ltd
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Guangdong Sunlite Science & Technology Co ltd
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Abstract

The invention relates to the technical field of damping, in particular to a lightweight damping material, a lightweight damping fin and a preparation method thereof, and the lightweight damping material provided by the application has a hollow structure by reasonably compounding a main material, a hollow filler or foaming agent, a reinforcing agent, a tackifier and a hardness regulator, so that the weight of the material is greatly reduced, and the density of the material is less than 1g/cm 3 The material has the effects of sound attenuation, sound insulation and damping, and can be widely applied to damping noise reduction materials; the lightweight damping fin comprises an aluminum foil layer, a lightweight structural layer and a release layer which are sequentially arranged, wherein the lightweight structural layer is made of a light self-adhesive non-vulcanized rubber material, and the non-vulcanized rubber material with self-adhesive property is adopted, so that the lightweight damping fin is light in weight, can be directly adhered to the release layer for use after the release layer is peeled off, and is convenient to use; the preparation method of the damping fin is simple in process and easy to prepare, and meets the requirements of mass production and manufacturing.

Description

Lightweight damping material, lightweight damping fin and preparation method thereof
Technical Field
The invention relates to the technical field of damping, in particular to a lightweight damping material, a lightweight damping fin and a preparation method thereof.
Background
Along with the development of industrialization, degree of automation is higher and higher, and there are vibrations and noises in the place with machinery, and what is closest to people's life is the vibrations and noises when automobiles and household appliances run.
At present, damping fins with high density are mainly adopted for vibration reduction and noise reduction, but with the promotion of energy conservation and emission reduction, the increase of weight means the increase of energy consumption, so the damping fins are developed towards light weight to adapt to the development of the times.
In view of this, there is a need for an improved damper in the prior art to better satisfy the design requirement of light weight.
Disclosure of Invention
In order to solve the problems, the invention provides a lightweight damping material, a lightweight damping fin and a preparation method thereof, wherein the damping fin adopts a hollow material as a filler, so that the lightweight effect is realized, and the application range is wide; the lightweight damping material is a light self-adhesive non-vulcanized rubber material and can be directly adhered for use.
The technical scheme adopted by the invention is as follows:
a lightweight damping material comprises the following components in parts by weight:
90-110 parts of main material; 2-300 parts of hollow filler or foaming agent; 40-150 parts of a reinforcing agent; 3-200 parts of a tackifier; 0-200 parts of a hardness regulator.
Further, the main material is any one or combination of any several of butyl rubber, chlorinated butyl rubber and brominated butyl rubber.
Further, the foaming agent is any one or combination of N, N '-dinitrosopentamethylenetetramine, 4' -oxybis-benzenesulfonylhydrazide, azodicarbonamide and an expandable microsphere foaming agent.
Further, the reinforcing agent is carbon black or white carbon black.
Further, the tackifier is polyisobutylene or tackifying resin with different molecular weights.
Further, the hardness modifier is a softening oil.
Based on the same inventive concept, the application also provides a lightweight damping fin, which comprises an aluminum foil layer, a lightweight structural layer and a release layer which are sequentially arranged, wherein the lightweight structural layer is made of a light self-adhesive non-vulcanized rubber material.
Further, the aluminum foil layer is made of soft aluminum foil.
Furthermore, the thickness of the soft aluminum foil is 0.05-2 mm.
Based on the same inventive concept, the application also provides a preparation method for preparing the lightweight damping fin by using the damping material, which comprises the following steps:
firstly, putting the main material into a kneading machine for kneading for 5-10 min;
adding reinforcing agent and tackifier, and kneading for 10-15 min;
finally adding the hollow filler/foaming agent and the hardness regulator, kneading for 10-15min, and pouring out after the rubber material is uniformly dispersed;
and finally, extruding the rubber material into a sheet by an extruder, and immediately covering release paper and aluminum foil after extrusion to prepare the lightweight damping sheet.
The invention has the following beneficial effects:
1. the light damping material provided by the application has a hollow structure through reasonable compounding of the main material, the hollow filler or foaming agent, the reinforcing agent, the tackifier and the hardness regulator, so that the weight of the material is greatly reduced, and the density of the material is less than 1g/cm 3 The material has the effects of sound attenuation, sound insulation and damping, and can be widely applied to damping noise reduction materials; specifically, the main material in the material endows the rubber material with the most basic performance, the molecular chain structure of the butyl rubber contains a large amount of side methyl groups, and the steric hindrance effect of the side methyl groups enables the butyl rubber to have large elastic hysteresis, energy consumption and damping effects when the molecular chain segment moves, so that the damping performance is shown, but the self-adhesion and mutual adhesion of the butyl rubber are poor, so that the adhesion force far cannot meet the use requirement, the adhesion of the product is improved by adding a tackifier in the material, so as to meet the adhesion force requirement, meanwhile, the damping material in the application can increase the damping effect of the product by adding hollow filler or foaming agent through adding hollow filler or foaming agent when the rubber is deformed, so that the rubber molecular motion, the internal friction between the chain segment and the filler, and between the filler and the filler can reduce the rubber material density after a large amount of filling, when the foaming agent is added specifically, the rubber material is heated in the extrusion process, the foaming agent can release gas, and air holes are formed in the rubber material, so that the density of the product is reduced, and the hardness regulator is added for regulating the hardness of the rubber material, so that the hardness range of the product is proper when the product is used, the product cannot be too hard to cause viscosity reduction and difficult to adhere, and the product cannot be too soft to cause rubber body flowing and performance reduction; thereby better meeting the application requirements.
2. The lightweight damping fin comprises an aluminum foil layer, a lightweight structural layer and a release layer which are sequentially arranged, wherein the lightweight structural layer is made of a light self-adhesive non-vulcanized rubber material, and the non-vulcanized rubber material with self-adhesion is adopted, so that the lightweight damping fin is light in weight, can be directly pasted for use after the release layer is peeled off, and is simple in structure, reasonable in design, good in application effect and convenient to use;
3. the preparation method of the lightweight damping fin is simple in process flow and easy to prepare, and can meet the requirements of mass production and manufacturing.
Drawings
FIG. 1 is a schematic structural view of a lightweight damper in some embodiments of the present disclosure;
description of reference numerals: 1. aluminum foil layer, 2 lightweight structural layer, 3 release layer.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, the light-weight damping fin provided by the application comprises an aluminum foil layer 1, a light-weight structure layer 2 and a release layer 3 which are sequentially arranged, wherein the light-weight structure layer 2 is made of a light self-adhesive non-vulcanized rubber material, specifically, the aluminum foil layer 1 is set to be a soft aluminum foil, and the thickness of the soft aluminum foil is 0.05-2 mm.
More specifically, the lightweight structure layer 2 is made of lightweight materials provided by the application, so as to realize lightweight design of the damping sheet and realize better damping and noise reduction.
The following are specific examples of the lightweight damping material provided in the present application for making lightweight damping fins
Example 1
The lightweight damping fin that this embodiment provided, this damping fin include from top to bottom the laminating have soft aluminium foil, lightweight damping material and leave type paper, and wherein lightweight damping material constitutes: 100 parts of butyl rubber, 150 parts of hollow powder, 50 parts of white carbon black, 80 parts of 2400 molecular weight polyisobutylene, 10 parts of hardness regulator, 4mm/5S of penetration degree of a damping material, and 0.1mm of soft aluminum foil as the aluminum foil.
Example 2
The damper sheet according to the present embodiment comprises an aluminum foil 3, a lightweight damping material and a release paper laminated from top to bottom, wherein the lightweight damping material comprises 100 parts of chlorinated butyl rubber, 10 parts of foaming agent OBSH (4, 4' -oxybis-benzenesulfonylhydrazide), 70 parts of white carbon black, 75 parts of 1300-molecular-weight polyisobutylene, and 0 part of hardness modifier. The penetration degree of the damping material is 4.2mm/5S, and the aluminum foil is soft aluminum foil with the thickness of 0.2 mm.
Example 3
The lightweight damping fin that this embodiment provided, this damping fin have aluminium foil, lightweight damping material layer and from type paper including from top to bottom laminating, and wherein lightweight damping material constitutes: 100 parts of brominated butyl rubber, 20 parts of foaming agent H (N, N' -dinitrosopentamethylenetetramine), 100 parts of white carbon black, 120 parts of 2400 molecular weight polyisobutylene and 60 parts of hardness regulator. The penetration degree of the damping material is 5.3mm/5S, and the aluminum foil is soft aluminum foil with the thickness of 0.4 mm.
Example 4
The lightweight damping fin that this embodiment provided, this damping fin have aluminium foil, lightweight damping material layer and from type paper including from top to bottom laminating, and wherein lightweight damping material constitutes: 100 parts of butyl rubber, 10 parts of foaming agent OBSH (4, 4' -oxybis-benzenesulfonyl hydrazide), 50 parts of white carbon black, 75 parts of 2400 molecular weight polyisobutylene and 5 parts of hardness regulator. The penetration degree of the damping material is 4.5mm/5S, and the aluminum foil is soft aluminum foil with the thickness of 0.3 mm.
Example 5
The lightweight damping fin that this embodiment provided, this damping fin have aluminium foil, lightweight damping material layer and leave type paper including laminating from top to bottom, and wherein lightweight damping material constitutes: 100 parts of chlorinated butyl rubber, 200 parts of hollow powder, 50 parts of carbon black, 60 parts of 2400 molecular weight polyisobutylene, 10 parts of hardness regulator, 4.3mm/5S of penetration degree of damping material, and 0.2mm of soft aluminum foil as the aluminum foil.
The lightweight damping fins of examples 1 to 5 were produced by the following production methods:
firstly, putting the main material into a kneading machine for kneading for 5 min;
adding reinforcing agent and tackifier, and kneading for 10 min;
finally adding the hollow filler/foaming agent and the hardness regulator, kneading for 10min, and pouring out after the rubber material is uniformly dispersed;
and finally, extruding the rubber material into a sheet by an extruder, and immediately covering release paper and aluminum foil after extrusion to prepare the lightweight damping sheet.
The damping fins prepared in the embodiments 1 to 5 and the common damping fins sold in the market are subjected to a composite damping factor test according to a GB/T18258 damping material damping performance test method, and the measured composite damping factors are shown in the following table:
Figure BDA0003702591510000051
the damping fin made of the lightweight damping material provided by the application is lighter in mass and better in damping performance compared with a commercially available common damping fin, and further, due to the fact that the lightweight structural layer is provided with the hollow structure, the sound insulation and noise reduction effects of the damping fin can be effectively improved, so that the damping fin has the noise reduction damping effect, and the damping fin can be widely applied to damping noise reduction materials of equipment such as automobiles, motor cars, trains, air conditioners, air compressors and the like.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the present invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. The lightweight damping material is characterized by comprising the following components in parts by weight:
90-110 parts of main material; 2-300 parts of hollow filler or foaming agent; 40-150 parts of a reinforcing agent; 3-200 parts of a tackifier; 0-200 parts of a hardness regulator.
2. The light-weight damping material according to claim 1, wherein the main material is any one or a combination of any of butyl rubber, chlorinated butyl rubber and brominated butyl rubber.
3. The light-weight damping material of claim 2, wherein the density of the primary material in the material is less than 1g/cm 3 。
4. The light weight damping material of claim 1, wherein the blowing agent is any one or a combination of N, N '-dinitrosopentamethylenetetramine, 4' -oxybis-benzenesulfonylhydrazide, azodicarbonamide, and an expandable microsphere blowing agent.
5. The light weight damping material of claim 1, wherein the reinforcing agent is carbon black or white carbon.
6. The light-weight damping material of claim 1, wherein the tackifier is polyisobutylene or tackifying resin of different molecular weights.
7. The light-weight damping material according to claim 1, wherein the hardness adjuster is a softening oil.
8. The light-weight damping fin is characterized by comprising an aluminum foil layer, a light-weight structural layer and a release layer which are sequentially arranged, wherein the light-weight structural layer is made of a light self-adhesive non-vulcanized rubber material.
9. The lightweight damping fin according to claim 8, wherein the aluminum foil layer is made of a soft aluminum foil, and the thickness of the soft aluminum foil is 0.05 to 2 mm.
10. A method for manufacturing a lightweight damper sheet according to claim 8 or 9 using the damper material according to any one of claims 1 to 7, comprising the steps of:
firstly, putting the main material into a kneading machine for kneading for 5-10 min;
adding reinforcing agent and tackifier, and kneading for 10-15 min;
finally adding the hollow filler/foaming agent and the hardness regulator, kneading for 10-15min, and pouring out after the rubber material is uniformly dispersed;
and finally, extruding the rubber material into a sheet by an extruder, and immediately covering release paper and aluminum foil after extrusion to prepare the lightweight damping sheet.
CN202210697096.6A 2022-06-20 2022-06-20 Lightweight damping material, lightweight damping fin and preparation method thereof Pending CN114874726A (en)

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