Butyl adhesive tape coated with hot melt adhesive film and preparation method thereof

A technology of hot melt adhesive film and butyl adhesive, which is applied in the field of automotive sealants to achieve the effects of suitable hardness, good tensile shear performance and damping performance, and excellent adhesion performance

Active Publication Date: 2020-03-27
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composite butyl rubber strip provided by the invention can avoid the problem that spot welding sealant and vibration damping glue need to be removed when the parts are poorly equipped, and then re-applied and then assembled and pressed. Other performance indicators of the rubber strip

Method used

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  • Butyl adhesive tape coated with hot melt adhesive film and preparation method thereof
  • Butyl adhesive tape coated with hot melt adhesive film and preparation method thereof
  • Butyl adhesive tape coated with hot melt adhesive film and preparation method thereof

Examples

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preparation example Construction

[0078] The present invention also provides a method for preparing a butyl rubber strip covered with a hot-melt adhesive film described in the above-mentioned technical solution, comprising the following steps:

[0079] a) After butyl rubber, polyisobutylene, terpene resin, lubricant, vulcanization activator, reinforcing agent, flame retardant and blowing agent are banburyed and discharged, add p-tert-butylphenol formaldehyde resin for mixing, Thin through the film;

[0080] b) extruding the colloid from the product obtained in step a), and compounding a hot melt adhesive film to obtain a butyl rubber strip covered with a hot melt adhesive film.

[0081] Wherein, the kind, consumption and source etc. of described butyl rubber, polyisobutylene, terpene resin, lubricant, vulcanization active agent, reinforcing agent, flame retardant, blowing agent and p-tert-butylphenol formaldehyde resin are all related to The descriptions in the above technical solutions are consistent and wil...

Embodiment 1

[0089] 1.1 Raw material

[0090] Butyl strip formula:

[0091]

[0092] Hot melt adhesive film: 3M of 3M Company TM 615 polyester hot melt adhesive film.

[0093] 1.2 Preparation

[0094] A) The initial temperature of banburying is 70°C, add butyl rubber and banbury for 3 minutes, then add carbon black, white carbon black, magnesium oxide, zinc oxide, flame retardant, foaming agent, stearic acid, polyisobutylene, terpene Vinyl resin banburying for 4 minutes, when the temperature rises to 105°C, deglue;

[0095] B) On the open mill, continue to mill the butyl rubber compound in the previous step, add p-tert-butylphenol formaldehyde resin and knead evenly, and park the lower sheet of Botong;

[0096] C) Extrude the rubber strip with release paper and hot-melt adhesive film while extruding it with the butyl rubber strip production equipment, and then pack it for later use.

[0097] The curing temperature of the obtained filmed butyl rubber strip was 180°C, and the curing...

Embodiment 2

[0102] 1.1 Raw material

[0103] Butyl strip formula:

[0104]

[0105] Hot melt adhesive film: BEMIS 3218 polyurethane hot melt adhesive film of BEMIS company.

[0106] 1.2 Preparation

[0107] A) The initial temperature of banburying is 75°C, add butyl rubber and banbury for 3 minutes, then add carbon black, white carbon black, magnesium oxide, zinc oxide, flame retardant, foaming agent, stearic acid, polyisobutylene, terpene Vinyl resin banburying for 4 minutes, when the temperature rises to 110°C, deglue;

[0108] B) On the open mill, continue to mill the butyl rubber compound in the previous step, add p-tert-butylphenol formaldehyde resin and knead evenly, and park the lower sheet of Botong;

[0109] C) Extrude the rubber strip with release paper and hot-melt adhesive film while extruding it with the butyl rubber strip production equipment, and then pack it for later use.

[0110] The curing temperature of the obtained filmed butyl rubber strip was 180°C, and the c...

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Abstract

The invention provides a butyl adhesive tape coated with a hot melt adhesive film and a preparation method of the butyl adhesive tape. The adhesive tape provided by the invention is a composite adhesive tape and comprises a butyl adhesive tape and a hot melt adhesive film attached to one surface of the butyl adhesive tape, the properties that the hot melt adhesive film is non-sticky at room temperature and is bonded at high temperature are utilized, the hot melt adhesive film can be conveniently and randomly assembled and pressed in a welding workshop when being used as a spot welding sealantand a damping adhesive, the problem that a common butyl adhesive tape needs to be assembled and pressed again after spot welding sealant and damping glue are removed and glue is applied again when thebutyl adhesive tape is installed between metal plates is poor can be solved, and the position of a sheet metal plate making contact with the hot melt adhesive film can be conveniently adjusted when parts and components are assembled and pressed. After alignment assembly, the hot melt adhesive film does not need to be removed, and in a subsequent electrophoretic paint baking process, the hot meltadhesive film is softened at the high temperature and attached to the butyl adhesive tape and the sheet metal part. Meanwhile, by controlling the formula of the butyl adhesive tape, the butyl adhesivetape can have cohesive failure performance, proper hardness and good tensile shear performance and damping performance.

Description

technical field [0001] The invention relates to the field of automobile sealants, in particular to a butyl rubber strip covered with a hot-melt adhesive film and a preparation method thereof. Background technique [0002] In the automobile body manufacturing process, in order to improve the airtightness, rust resistance and vibration and noise reduction performance of the body, it is necessary to carry out the necessary gluing process in the partial gap area of ​​the sheet metal of the body. In the welding workshop of automobile production, hem glue, spot welding sealant, weld seam sealant, vibration damping glue, reinforcing film, etc. are needed. Spot welding sealant and welding sealant are mainly used for sealing, preventing air leakage and preventing water vapor from corroding the steel plate gap; vibration damping glue is mainly used for vibration reduction and noise reduction; reinforcing film is mainly used for reinforcement and vibration reduction and noise reduction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/22C08L23/20C08K13/04C08K7/26C08K3/04C08K3/22C08K5/09C08J9/10C09J7/24C09J7/35C09J7/40
CPCC08J9/0023C08J9/0061C08J9/0066C08J9/0095C08J9/103C08J2203/04C08J2323/22C08J2423/22C08J2445/00C08J2461/10C09J7/241C09J7/35C09J7/40C09J2301/122C09J2301/304C09J2423/006
Inventor 许东华卢宇源石彤非安立佳
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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