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Coated foam vibration-damping sheet specially used for automotive door and preparation method of vibration-damping sheet

A special bag, car door technology, applied in the field of damping materials, can solve the problems of rising fuel consumption and emissions, failing to achieve green environmental protection, increasing body weight, etc., to achieve improved bending resistance, high and low temperature resistance, and improved water resistance. Effect

Active Publication Date: 2019-07-16
天津市浩迪橡塑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the damping materials currently available on the market are generally rubber-type. In order to increase the damping coefficient of rubber-type damping sheets, the method widely used is to increase the thickness of the product. However, increasing the thickness will increase the weight of the vehicle body, resulting in an increase in fuel consumption and emissions, which cannot be achieved. The purpose of green environmental protection

Method used

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  • Coated foam vibration-damping sheet specially used for automotive door and preparation method of vibration-damping sheet
  • Coated foam vibration-damping sheet specially used for automotive door and preparation method of vibration-damping sheet
  • Coated foam vibration-damping sheet specially used for automotive door and preparation method of vibration-damping sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A kind of damping layer in the coated foam damping sheet specially used for automobile door, including the following raw materials butyl rubber 100kg, N550 carbon black 40kg, polyisobutylene PIB-130050kg, petroleum resin EScorez 120450kg, graphite 5 kg of olefin-coated hollow glass microspheres, 150 kg of light calcium carbonate, and 6 kg of naphthenic oil.

[0042] In terms of parts by mass, the coated foam layer includes the following raw materials: 100kg of EVA resin, 20kg of foaming agent OBSH, 1kg of high-activity magnesium oxide as an acid neutralizer, 1kg of crosslinking agent DCP, 0.1kg of calcium carbonate, and 0.1kg of phthalocyanine green.

[0043] The preparation method of the damping layer comprises: (1) plasticizing the butyl rubber on an open mill for 8 minutes at a temperature of 70° C.; (2) putting the butyl rubber obtained in step (1) into the internal mixer, Put in carbon black, light calcium carbonate, and graphene-coated hollow glass microspheres, k...

Embodiment 2

[0049]A kind of damping layer in the coated foam damping plate specially used for automobile door, which includes the following raw materials butyl rubber 100kg, N550 carbon black 60kg, polyisobutylene PIB-130080kg, petroleum resin EScorez 120460kg, graphite Alkene-coated hollow glass microspheres 8kg, light calcium carbonate 180kg, naphthenic oil 15kg.

[0050] In terms of parts by mass, the coated foam layer includes the following raw materials: 100 kg of EVA resin, 25 kg of foaming agent OBSH, 2 kg of acid neutralizing agent highly active magnesium oxide, 3 kg of crosslinking agent DCP, 3 kg of talcum powder, and 0.2 kg of phthalocyanine green.

[0051] The preparation method of the damping layer comprises: (1) plasticizing and mixing butyl rubber on an open mill for 10 minutes at a temperature of 80° C.; (2) putting the butyl rubber obtained in step (1) into an internal mixer, Put in carbon black, light calcium carbonate, and graphene-coated hollow glass microspheres, knea...

Embodiment 3

[0056] A kind of damping layer in the coated foam damping plate specially used for automobile door, including the following raw materials butyl rubber 100kg, N550 carbon black 45kg, polyisobutylene PIB-130065kg, petroleum resin EScorez 130453kg, graphite Alkene-coated hollow glass microspheres 7kg, light calcium carbonate 160kg, naphthenic oil 8kg.

[0057] In terms of parts by mass, the coated foam layer includes the following raw materials EVA resin 100kg, foaming agent OBSH22kg, acid neutralizer high active magnesium oxide 1.3kg, crosslinking agent DCP1.5kg, calcium carbonate 2kg, phthalocyanine green 0.15kg kg.

[0058] The preparation method of the damping layer includes: (1) plasticizing the butyl rubber on an open mill for 9 minutes at a temperature of 75° C.; (2) putting the butyl rubber obtained in step (1) into the internal mixer, Put in carbon black, light calcium carbonate, and graphene-coated hollow glass microspheres, knead at 70-80°C for 6 minutes, then add pol...

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Abstract

The invention relates to a coated foam vibration-damping sheet specially used for an automotive door and a preparation method of the vibration-damping sheet. The vibration-damping sheet adopts butyl rubber as a composite damping base material, and an EVA foaming material is subjected to injection molding on an aluminum alloy skeleton material. When the coated foam vibration-damping sheet speciallyused for the automotive door provided by the invention adheres to the interior of the automotive door to pass through a baking workshop, a coated foaming layer is subjected to foaming, curing is performed, and the cured material acts with the butyl rubber composite damping material together to realize the effects of damping vibration and absorbing sound of the automotive door.

Description

technical field [0001] The invention belongs to the field of damping materials and relates to constrained damping materials for automobiles, in particular to a specially coated foaming vibrating plate for automobile doors and a preparation method thereof. [0002] technical background [0003] At present, foam sound-absorbing materials and rubber damping materials in automobiles have been widely used by major car manufacturers. Because the door vibrates and generates noise when the car is running, the foamed sound-absorbing material of the car can effectively reduce the noise outside the car and the interference of the airflow to the passengers and improve the ride comfort of the passengers. The material of automotive foam sound-absorbing materials is generally resin, which will exert NVH effect after electrophoresis baking (140℃~160℃×20Min) and foaming. [0004] The damping material is a kind of material derived to reduce the vibration generated during the driving of the ca...

Claims

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Application Information

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IPC IPC(8): B32B25/08B32B25/04B32B25/18B32B27/06B32B27/30B32B27/20B32B33/00C08L23/22C08L23/20C08K9/10C08K7/28C08K3/26C08K3/04
CPCB32B5/18B32B25/045B32B25/08B32B25/18B32B27/06B32B27/20B32B2266/0221B32B2307/102B32B2307/306B32B2307/3065B32B2307/546B32B2307/552B32B2307/56B32B2605/08C08K2003/265C08L23/22C08L2201/02C08L2205/025C08L2205/035C08K9/10C08K7/28C08K3/26C08K3/04
Inventor 肖焰王庆凯郑彦明
Owner 天津市浩迪橡塑科技有限公司
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