Special sound insulation sponge for automobile and preparation method of special sound insulation sponge
A technology for sponges and automobiles, applied in the field of automobile sponges, can solve the problems that sponges do not have elastic recovery ability, the shape is easy to change, and it is difficult to recover, and achieves the effects of good sound insulation, increased sound insulation, and no polluting gas.
Inactive Publication Date: 2021-12-28
华力汽车部件(南通)有限公司
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Problems solved by technology
[0003] However, in the existing technology, most car sponges do not have good elastic recovery ability, and it is difficult to recover when subjected to pressure, resulting in easy change of shape
Method used
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Embodiment Construction
[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0028] In Embodiment 1 of the present invention, a special sound-proof sponge for automobiles, the sound-proof sponge includes:
[0029] Polyurethane 100 parts
[0030] Foaming aid 15 parts
[0031] 4 parts adhesive
[0032] Additive 2 parts
[0033] 6 parts of water.
[0034] The foaming aid is one or more of inorganic foaming agents calcium carbonate, magnesium carbonate, sodium bicarbonate and carbon black; the binder is one of synthetic resin and ethyl...
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The invention discloses a special sound insulation sponge for an automobile and a preparation method thereof, and relates to the technical field of automobile sponges, the sound insulation sponge comprises the following components in parts by mass: 80-120 parts of polyurethane, 10-20 parts of a foaming aid, 4-8 parts of an adhesive, 2-6 parts of an additive and 5-8 parts of water, the foaming aid is one or more of inorganic foaming agents including calcium carbonate, magnesium carbonate, sodium bicarbonate and carbon black. The preparation method is simple, the preparation process is environmentally safe, no pollution gas is generated, the minimum sound insulation amount of the sponge can reach 29.8 dB, the sound insulation effect is obvious, the sound insulation effect is obviously improved along with the increase of the mass fraction of the additive, the sponge has a good sound insulation effect, and the prepared sponge can bear the maximum compression ratio of 78.2% to the minimum, and has a good application prospect. And along with the increase of the adhesive, the maximum compression ratio is obviously increased, and the elastic recovery capability is good.
Description
technical field [0001] The invention relates to the technical field of automobile sponges, in particular to a special sound-insulating sponge for automobiles and a preparation method thereof. Background technique [0002] Commonly used sponges are made from wood cellulose fibers or expanded plastic polymers. There are also natural sponges made from spongy animals. Most natural sponges are used for body cleaning or painting, and there are three other types of materials High-quality synthetic sponges are low-density polyether (non-absorbent sponge), polyvinyl alcohol (high water-absorbent material, no obvious pores) and polyester. For car sponges, it is shaped cotton, which is mainly used in car seats. [0003] However, in the prior art, most car sponges do not have good elastic recovery ability, and it is difficult to recover when subjected to pressure, resulting in easy change of shape. Contents of the invention [0004] The object of the present invention is to provide ...
Claims
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IPC IPC(8): C08L75/04C08L23/08C08L97/02C08J9/12
CPCC08J9/125C08J9/0085C08J9/0095C08J2375/04C08J2423/08C08J2497/02C08J2203/10
Inventor 王欣
Owner 华力汽车部件(南通)有限公司