Sandwich structure self-adhesive damping foaming adhesive tape for vehicle, preparation method and damping structure

A sandwich and self-adhesive technology, applied in the direction of chemical instruments and methods, adhesives, rubber layered products, etc., can solve the problems that the cavity cannot be completely well sealed, the sound absorption and sound insulation performance cannot be provided, and the sound insulation and noise reduction effect is poor. Achieve good sustainable development prospects, long service life, and improve the effect of friction

Active Publication Date: 2022-03-04
SHANGHAI YONGGUAN ADHESIVE PROD CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the related art, most of the vehicle damping sheets are made of asphalt or butyl rubber materials, which are non-foaming materials and cannot provide additional sound absorption and sound insulation performance
If the asphalt and butyl rubber materials are replaced with extruded expansion rubber strips, due to its double-layer structure, the cavity cannot be completely sealed, resulting in poor sound insulation and noise reduction effects, and the double-layer structure of the extruded expansion rubber strips Easy to crack between the glue layer and the glue layer

Method used

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  • Sandwich structure self-adhesive damping foaming adhesive tape for vehicle, preparation method and damping structure
  • Sandwich structure self-adhesive damping foaming adhesive tape for vehicle, preparation method and damping structure
  • Sandwich structure self-adhesive damping foaming adhesive tape for vehicle, preparation method and damping structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The embodiment of the present application discloses a self-adhesive damping foam strip with a sandwich sandwich structure for vehicles, including the following raw materials: 6kg EPDM rubber, 8kg ethylene-vinyl acetate copolymer, 6kg ethylene-acrylate copolymer, 2kg acrylic acid Resin, 7kg hydrogenated petroleum resin, 36kg polyisobutylene, 30kg mica powder, 4.9kg organic foaming agent, 0.1kg crosslinking agent.

[0061] The acrylic resin is dipentaerythritol hexaacrylate.

[0062] The mica powder is hydromica with a mesh number of 800 mesh.

[0063] The organic foaming agent is AC foaming agent, and the crosslinking agent is initiator DTBP.

[0064] The embodiment of the present application also discloses a method for preparing a self-adhesive damping foam strip with a sandwich sandwich structure for vehicles, including the following steps:

[0065] Step 1): Pre-dry the hydromica in an oven to remove moisture and set aside. The staff can adjust the baking time accor...

Embodiment 2-3

[0071] A sandwich sandwich structure self-adhesive damping foam rubber strip for vehicles, which differs from Example 1 in that:

[0072] The dosages of EPDM rubber, ethylene-vinyl acetate copolymer, ethylene-acrylate copolymer, hydrogenated petroleum resin, and polyisobutylene are different.

[0073] The specific selection and dosage of acrylic resin, mica powder, organic foaming agent and crosslinking agent are different. See Table 2 for details, and the data of Example 1 are also summarized in Table 2.

[0074] Table 2

[0075]

[0076]

Embodiment 4

[0078] A sandwich sandwich structure self-adhesive damping foam strip for vehicles, the difference from Example 3 is that the mass ratio of acrylic resin, organic foaming agent and mica powder is 2.5:6.5:27, and the acrylic resin is double Pentaerythritol pentaacrylate, the organic foaming agent is OBSH foaming agent, and the mica powder is a mixture of hydromica and biotite. The dosage of each raw material is shown in Table 3.

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Abstract

The invention relates to the field of foaming rubber strips, in particular to a self-adhesive damping foaming rubber strip with a sandwich structure for a vehicle, a preparation method and a damping structure. The invention discloses a self-adhesive damping foaming adhesive tape with a sandwich structure for a vehicle. The self-adhesive damping foaming adhesive tape is prepared from the following components: ethylene propylene diene monomer, an ethylene-vinyl acetate copolymer, an ethylene-acrylate copolymer, acrylic resin, hydrogenated petroleum resin, polyisobutene, mica powder, a foaming agent and a cross-linking agent. The preparation method comprises the following steps: 1) mixing ethylene propylene diene monomer, ethylene-vinyl acetate copolymer, ethylene-acrylate copolymer, acrylic resin, hydrogenated petroleum resin, polyisobutene and mica powder to obtain a rubber intermediate; 2) adding a foaming agent and a cross-linking agent, and mixing to obtain a material to be used; and (3) preparing the to-be-used material into a flaky finished product. The damping structure has the advantages of reducing structural noise and improving the damping effect.

Description

technical field [0001] The application relates to the field of foam rubber strips, more specifically, it relates to a self-adhesive damping foam rubber strip with a sandwich sandwich structure for vehicles, a preparation method and a damping structure. Background technique [0002] At present, there are a large number of closed box reinforced beam structures in the design of the side wall of the vehicle body, thus creating a cavity structure. When the vehicle is running at high speed, a high-speed airflow field is generated in the side wall cavity. When the high-speed airflow rubs against obstacles in the cavity, cavity sheet metal resonance noise is generated. Noise, tire noise, etc.) also play a role in transmission, so the side cavity of the body needs to be blocked by cavity filling and sealing technology. [0003] At present, in the body cavity filling and sealing technology, heat-reactive products are the most widely used, which can be divided into injection molding a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/20C09J123/16C09J123/08C09J11/04C09J11/08B32B25/04B32B25/14B32B33/00
CPCC09J123/22C09J11/04C09J11/08B32B5/18B32B33/00B32B2307/10B32B2307/56B32B2266/0207C08L23/16C08L23/0853C08L23/0869C08L57/02C08K3/34
Inventor 吕新民
Owner SHANGHAI YONGGUAN ADHESIVE PROD CORP LTD
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