A kind of multi-component shock-absorbing composite sound-absorbing cotton and its preparation method

A sound-absorbing cotton, multi-component technology, applied in physical treatment, fiber treatment, textiles and papermaking, etc., can solve the problems of not taking into account sound absorption and shock absorption, poor environmental protection, etc., and achieve the effect of light weight, good elasticity and high melting point

Active Publication Date: 2021-01-26
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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  • A kind of multi-component shock-absorbing composite sound-absorbing cotton and its preparation method
  • A kind of multi-component shock-absorbing composite sound-absorbing cotton and its preparation method

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 a multi-component shock-absorbing composite sound-absorbing cotton and a preparation method thereof, belonging to the processing field of shock-absorbing and sound-absorbing materials. The invention uses ES fibers, PET fibers, and magnetic hollow polyester short fibers as raw materials, and simultaneously adds low-melting point polyester Thermal fuse, and the process of laying net, spunlace process, drying and shaping, external magnetic field, ultrasonic assisted modification of hollow polyester staple fiber, the whole preparation process is prepared by using the material's own properties, reducing the application of chemical reagents and reducing The VOC content of the prepared product is environmentally friendly and healthy, and at the same time, the magnetic hollow polyester staple fiber nano-Fe 2 o 3 The quantum effect is beneficial to improve the fiber strength and the shielding and absorption of sound 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 Patents(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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