Sound insulation and sound absorption material for high-speed train and manufacturing method
A technology for sound-absorbing materials and high-speed trains, applied in the field of sound-insulating and sound-absorbing materials, can solve problems such as difficulties and achieve the effects of less environmental pollution, improved assembly efficiency, and easy processing and forming
Active Publication Date: 2017-05-03
CRRC QINGDAO SIFANG CO LTD
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Problems solved by technology
Theoretically speaking, controlling the source of vibration and sound is the most fundamental method, but at present, judging from the actual situation in our country, there are still some difficulties in carrying out this work
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[0034] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0035] Such as figure 1 As shown, the sound-insulating and sound-absorbing material for high-speed trains of the present invention is composed of a wear-resistant layer 1, a fiber layer 2, a damping layer 3 and a foam layer 4, and the fiber layer 2 is used as the base cloth layer of the wear-resistant layer 1 , the fiber layer 2 and the damping layer 3 are bonded in the middle of the wear-resistant layer 1 and the foam layer 4 , and the fiber layer 2 is bonded in the middle of the wear-resistant layer 1 and the damping layer 3 .
[0036] The material of wear-resistant layer 1, damping layer 3 and foam layer 4 is PVC (polyvinyl chloride). In order to make the material achieve excellent performance, an additive is added to the main material PVC, which is PVC and additive. Composition, the fiber layer 2 is a thermoplastic polyester layer. Among t...
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Abstract
The invention relates to sound insulation and absorption materials for a high speed train and a manufacturing method thereof. The sound insulation and absorption materials are formed by compounding a wearing layer, a fiber layer, a damping layer and a foaming layer, the fiber layer is used as the basic cloth layer of the wearing layer, the fiber layer and the damping layer are adhered between the wearing layer and the foaming layer, and the fiber layer is adhered to between the wearing layer and the damping layer. With sound insulation and absorption performances as well as thermal insulation performance, the sound insulation and absorption materials compensate each other on the performance and generate the synergistic effect, so the materials can be applied to the internal surface of the car body of the high speed train to achieve the effects of sound insulation and absorption as well as thermal insulation, such as sound insulation and thermal insulation of side walls and floors. The materials also have the features of easy processing and formation, tread resistance and little environment pollution, and several kinds of materials are compounded to improve the assembly efficiency of materials.
Description
technical field [0001] The invention relates to a sound-insulating and absorbing material, in particular to a sound-insulating and absorbing material used in high-speed trains and a manufacturing method. Background technique [0002] With the continuous development of high-speed railway technology, the vibration and noise problems of high-speed trains have attracted more and more attention. Aiming at the vibration and noise control of high-speed trains, a lot of research has been done at home and abroad. It mainly focuses on three aspects: vibration source and sound source control, vibration and sound propagation control, and material and structure control. Theoretically speaking, controlling the source of vibration and sound is the most fundamental method, but in terms of the actual situation in our country, there are still some difficulties in carrying out this work. The control of vibration and noise transmission, the utilization of new vibration and noise reduction mat...
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IPC IPC(8): B32B5/00
Inventor 郭小峰谭亮红崔巍徐波王冰松刘伟魏小娟张克姝刘银生孔令明刘志勇于子寿郭礼建贾玉山窦同强陈郁李福正梁君海
Owner CRRC QINGDAO SIFANG CO LTD