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Multicomponent damping composite noise-absorbing cotton and preparation method thereof

A sound-absorbing cotton, multi-component technology is applied in the field of multi-component shock-absorbing composite sound-absorbing cotton and its preparation, which can solve the problems of poor environmental protection, can not take into account sound absorption and shock absorption, etc., achieves light weight, reduces the application of chemical reagents, good elasticity

Active Publication Date: 2018-11-23
芜湖跃飞新型吸音材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] According to the deficiencies in the prior art above, the technical problem to be solved by the present invention is to propose a multi-component shock-absorbing composite sound-absorbing cotton and its preparation method, select ES fiber, PET fiber, magnetic hollow polyester staple fiber as raw materials, and adopt net laying , spunlace process, drying and shaping, external magnetic field, and ultrasonic-assisted modification of hollow polyester staple fiber process, which solves the shortcomings of the existing two-component sound-absorbing materials in poor environmental protection and inability to take into account sound absorption and shock absorption

Method used

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  • Multicomponent damping composite noise-absorbing cotton and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A multi-component shock-absorbing composite sound-absorbing cotton includes an ES fiber layer and a PET fiber layer from top to bottom, and a magnetic hollow polyester staple fiber layer is filled between the ES fiber layer and the PET fiber layer. The components of the composite sound-absorbing cotton The mass proportion is as follows: ES fiber 15%, PET fiber 8%, magnetic hollow polyester staple fiber 75%, low melting point polyester thermal fuse 2%, among which, ES fiber specification is 1-4D, PET fiber specification is 1-15D, The hollow rate of hollow polyester staple fiber is 24-30%.

[0028] A preparation method of multi-component shock-absorbing composite sound-absorbing cotton, the specific steps are as follows:

[0029] 1) Pretreatment of hollow polyester staple fiber: take nano Fe 2 o 3 , dissolved in citric acid aqueous solution with a concentration of 1-3%, and keep the ratio of solid to liquid at 1:3-7, then disperse the solution for 7min under the ultraso...

Embodiment 2

[0034] This example is the same as Example 1, except that the mass ratio of the components of the composite sound-absorbing cotton is as follows: 8% ES fiber, 3% PET fiber, 88% magnetic hollow polyester staple fiber, 1% low-melting point polyester thermal fuse, carding process The parameters are: the feeding speed is 2m / min, the speed of the first licker-in roller is 700r / min, the speed of the second licker-in roller is 900r / min, the speed of the third licker-in roller is 1600r / min, the total number of licker-in rollers is 6000 teeth, tin Forest and licker-in roller surface speed ratio are 2.1, cylinder rotating speed is 280r / min, doffer rotating speed is 35r / min; Ultrasonic power is 200w, and frequency is 600Hz, and the magnetic induction intensity of the magnetic field of step (1) is 1T, and pulse frequency is 10Hz , step (3) the magnetic induction of the magnetic field is 2T, and the pulse frequency is 30Hz.

Embodiment 3

[0036] This example is the same as Example 1, except that the mass ratio of the components of the composite sound-absorbing cotton is as follows: 23% of ES fiber, 9% of PET fiber, 65% of magnetic hollow polyester staple fiber, 3% of low-melting point polyester thermal fuse, and the carding process The parameters are: the feeding speed is 3.5m / min, the speed of the first licker-in roller is 1100r / min, the speed of the second licker-in roller is 1250r / min, the speed of the third licker-in roller is 1800r / min, the total number of licker-in rollers is 6500 teeth, The cylinder and licker-in surface speed ratio is 2.3, the cylinder speed is 330r / min, and the doffer speed is 45r / min; the ultrasonic power is 300w, the frequency is 800Hz, the magnetic induction of the magnetic field in step (1) is 1.5T, and the pulse frequency is 20Hz, the magnetic induction intensity of the magnetic field in step (3) is 3.5T, and the pulse frequency is 40Hz.

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Abstract

The invention discloses multicomponent damping composite noise-absorbing cotton and a preparation method thereof, and belongs to the field of processing of damping and noise-absorbing materials. The multicomponent damping composite noise-absorbing cotton takes ES fiber, PET fiber and magnetic hollow polyester staple fiber as raw materials, meanwhile, low-melting point dacron thermofuse is added, meanwhile, the technologies of lapping, water-jetting, drying and sizing, and modification of hollow polyester staple fiber through an additional magnetic field and ultrasonic assistance are adopted, the whole preparation process utilizes the self performance of the materials to prepare the multicomponent damping composite noise-absorbing cotton, application of chemical reagents is reduced, the VOCcontent of the prepared product is lowered, the product is environmentally friendly and healthy, and meanwhile, the quantum effect of the magnetic hollow polyester stapler fiber nano Fe2O3 is beneficial for improving the fiber strength and the shield and absorption to acoustic waves.

Description

technical field [0001] The invention belongs to the technical field of processing shock-absorbing and sound-absorbing materials, and in particular relates to a multi-component shock-absorbing composite sound-absorbing cotton and a preparation method thereof. Background technique [0002] In recent years, the air quality in the cockpit of new cars has attracted great attention from all walks of life. Many new car owners report that there is a pungent smell in the car for a period of time after buying a new car. If the cabin stays for too long, it may easily cause headaches, Nausea, vomiting, fatigue and other adverse symptoms. In severe cases, convulsions and coma will occur, and the liver, kidneys, brain and nervous system will be damaged, resulting in serious consequences such as memory loss. The root cause is that some unscrupulous automobile manufacturers use inferior raw materials or production processes by reducing the material cost of the supporting interior parts. W...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4382D04H1/492D04H1/541D04H1/55D04H1/559D06B13/00D06M10/06D06M101/32
CPCD04H1/4382D04H1/492D04H1/541D04H1/55D04H1/559D06B13/00D06M10/06D06M2101/32
Inventor 章云王敏雪王黎明杨祥林郑明何如意张舒
Owner 芜湖跃飞新型吸音材料股份有限公司
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