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High-initial-adhesion epoxy adhesive film and preparation method thereof

A technology of epoxy adhesive film and initial adhesion, which is applied in the direction of epoxy resin adhesive, polymer adhesive additive, non-polymer adhesive additive, etc. Broken, etc.

Inactive Publication Date: 2021-04-20
河南天濮环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the production process of automobile windshield, it will experience high temperature and high pressure, the glass surface is relatively smooth, and the mirror base is made of stainless steel or iron material, and it is difficult to bond two different substrates; at the same time, because the windshield During the production process, due to the heating process, the bonded mirror base and glass may slip, or the curing process of the adhesive film does not match the extension of the glass, causing the glass to break
[0003] At present, the adhesiveness of most adhesive films on the market to oil-coated steel plates and glass is relatively general, resulting in the phenomenon of chipping during automobile production, which seriously hinders production efficiency.

Method used

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  • High-initial-adhesion epoxy adhesive film and preparation method thereof
  • High-initial-adhesion epoxy adhesive film and preparation method thereof
  • High-initial-adhesion epoxy adhesive film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The present embodiment provides a kind of preparation method of high initial tack epoxy adhesive film, comprises the steps:

[0025] (1) 130g EPDM rubber, 330g epoxy resin and 30g dimer acid modified epoxy were mixed and stirred for 20min under the condition of 60r / min to obtain mixture a;

[0026] (2) Control the temperature to 40°C, add 400g of alumina solid filler to mixture a and stir for 15min under the condition of 50r / min to obtain mixture b;

[0027] (3) Add 30g of aromatic amine curing agent and 10g of phenol accelerator to mixture b and stir evenly under the condition of 70r / min to obtain mixture c;

[0028] (4) Extrude the mixture c through a double-roller machine, and attach the release paper up and down, and then cut it to a suitable size to obtain a high initial adhesion epoxy film.

Embodiment 2

[0030] The present embodiment provides a kind of preparation method of high initial tack epoxy adhesive film, comprises the steps:

[0031] (1) 170g EPDM rubber, 370g epoxy resin and 50g carboxyl-terminated liquid nitrile rubber modified epoxy were mixed and stirred for 25min under the condition of 50r / min to obtain mixture a;

[0032] (2) Control the temperature at 60°C, add 420g of alumina solid filler to mixture a and stir for 10min under the condition of 60r / min to obtain mixture b;

[0033] (3) Add 40g aromatic amine curing agent and 20g phenol accelerator to mixture b and stir evenly under the condition of 60r / min to obtain mixture c;

[0034] (4) Extrude the mixture c through an extruder, attach the release paper up and down, and then cut it to a suitable size to obtain a high initial adhesion epoxy film.

Embodiment 3

[0036] The present embodiment provides a kind of preparation method of high initial tack epoxy adhesive film, comprises the steps:

[0037] (1) 150g EPDM rubber, 350g epoxy resin and 50g polyurethane modified epoxy were mixed and stirred for 20min under the condition of 55r / min to obtain mixture a;

[0038] (2) Control the temperature to 50°C, add 400g of alumina solid filler to mixture a and stir for 15min under the condition of 60r / min to obtain mixture b;

[0039] (3) Add 35g of aromatic amine curing agent and 15g of phenol accelerator to mixture b and stir evenly under the condition of 70r / min to obtain mixture c;

[0040] (4) Extrude the mixture c through a double-roller machine, and attach the release paper up and down, and then cut it to a suitable size to obtain a high initial adhesion epoxy film.

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Abstract

The invention relates to a high-initial-adhesion epoxy adhesive film and a preparation method thereof. The high-initial-adhesion epoxy adhesive film is prepared from the following raw materials in parts by weight: 33 to 37 parts of epoxy resin, 13 to 17 parts of rubber, 3 to 5 parts of modified epoxy, 40 to 42 parts of a solid filler, 3 to 4 parts of a curing agent and 1 to 2 parts of an accelerant. According to the high-initial-adhesion epoxy adhesive film, the components are scientific and reasonable in compatibility, the structural bonding strength can be achieved along with thermocuring in the high-temperature and high-pressure environment in the windshield glass manufacturing process, extra equipment does not need to be added, the high-initial-adhesion epoxy adhesive film has high resistance to cold and hot temperature change impact, moisture, ultraviolet and other external environments after being cured, and it can be known through actual inspection that the minimum slippage is only 0.4 mm, and the bonding effect is excellent; and the preparation method only needs simple mixing, the process is easy to control, and large-scale production is facilitated.

Description

technical field [0001] The invention belongs to the field of adhesives, and in particular relates to a high initial tack epoxy film and a preparation method thereof. Background technique [0002] In the production process of automobile windshield, it will experience high temperature and high pressure, the glass surface is relatively smooth, and the mirror base is made of stainless steel or iron material, and it is difficult to bond two different substrates; at the same time, because the windshield During the production process, due to the heating process, the bonded mirror base and glass may slip, or the curing process of the adhesive film does not match the extension of the glass, resulting in glass breakage. [0003] At present, most of the adhesive films on the market have relatively general adhesion to oil-coated steel plates and glass, resulting in the phenomenon of chipping during automobile production, which seriously hinders production efficiency. Contents of the i...

Claims

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Application Information

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IPC IPC(8): C09J163/00C09J123/16C09J11/04C09J11/08C09J7/30C09J7/10
Inventor 李新萍朱军
Owner 河南天濮环保科技有限公司
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