Polyester foaming process based on preparation of side cavity sound-absorbing cotton for automobile

A technology of sound-absorbing cotton and cavity, which is applied in applications, household appliances, household components, etc., can solve the problems of low efficiency and the inability to adjust the ratio of raw materials according to actual conditions, and achieve the effect of improving efficiency and flexible design

Pending Publication Date: 2021-08-24
温州市环球汽车衬垫有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the present invention provides a polyester foaming process based on the sound-absorbing cotton of the side cavity of the automobile to overcome the problem in the prior art that the ratio of raw materials cannot be adjusted according to the actual situation and the use efficiency is low.

Method used

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  • Polyester foaming process based on preparation of side cavity sound-absorbing cotton for automobile
  • Polyester foaming process based on preparation of side cavity sound-absorbing cotton for automobile
  • Polyester foaming process based on preparation of side cavity sound-absorbing cotton for automobile

Examples

Experimental program
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Effect test

Embodiment 1

[0137] 1. Preparation of crushed foam

[0138] Broken foam is polyurethane foam material, which is composed of A and B components. The raw materials of the A component include polyester, water, composite stabilizer, starting catalyst, gel catalyst, leveling agent, crosslinking agent, composite catalyst and cell opening agent, and the B component is an isocyanate compound, specifically Polymethylene polyphenyl polyisocyanate is used. Among them, the gel catalyst is composed of 25% triethylenediamine and 75% 1,4 butanediol. As the cell opener, polybutadiene and fumed silica were used.

[0139] Concrete preparation steps are as follows:

[0140] (1) Mix the raw materials in component A, and add component B into the foaming machine separately, and set the flow rate of component A and component B: when setting the flow rate, turn on the high pressure, rotate the flowmeter, and set the flow rate to The actual high and low pressure flow is filled in, and the flow rate of componen...

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Abstract

The invention relates to a polyester foaming process based on preparation of side cavity sound-absorbing cotton for an automobile. The polyester foaming process comprises the following steps: adjusting the ratio of raw materials in a component A according to performance requirements; determining the total weight and weight part ratio of the component A to a component B according to the size of an outer layer bag; foaming the mixed components in a foaming machine, and after foaming is completed, standing the materials till foamed cotton is obtained; conveying the foamed cotton to a smashing machine, so that the smashing machine smashes the foamed cotton to form smashed foamed cotton; delivering the smashed foamed cotton into the outer layer bag by a filling machine; and sealing the outer layer bag by a sealing machine to complete preparation. By using a central control processor, the addition amount of a starting catalyst, a leveling agent, a cross-linking agent and a pore opening agent can be adjusted according to the performance requirements of the smashed foamed cotton when the side cavity sound-absorbing cotton is prepared, so that the parameters of the subsequently prepared foamed cotton are effectively finely adjusted, therefore, the finally prepared side cavity sound-absorbing cotton is suitable for an appointed environment, and the use efficiency of the side cavity sound-absorbing cotton prepared by the process is effectively improved.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to a polyester foaming process prepared based on sound-absorbing cotton for a side cavity of an automobile. Background technique [0002] With the improvement of living standards, while satisfying the convenience of transportation, people continue to pursue high-safety and high-quality driving experience. More and more people pay more attention to the quietness and comfort of cars. The noise in the vehicle interior has higher requirements. At present, although sound-absorbing cotton is installed on the back of the side panel in traditional cars, it has been unable to effectively block tire noise, road noise, and wind noise from the outside. There is a bypass cavity structure formed by the closed box reinforcement beam in the side wall of the body; when the car is running at high speed, a high-speed airflow field will be generated in the side wall cavity, thereby generating and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C69/00B29L31/30B29K67/00
CPCB29C69/00B29K2067/00B29L2031/30
Inventor 欧湖斯陈小珍吴金克
Owner 温州市环球汽车衬垫有限公司
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