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Structural pressure-sensitive adhesive, structural pressure-sensitive adhesive tape and preparation method of structural pressure-sensitive adhesive and structural pressure-sensitive adhesive tape

A pressure-sensitive adhesive tape and structural technology, applied in the direction of adhesives, epoxy resin glue, adhesive types, etc., can solve the problems of peeling of labels, easy aging of pressure-sensitive adhesives, inconvenient operation, etc., and achieve high bonding strength Effect

Active Publication Date: 2011-11-09
中国航天科技集团公司第四研究院第四十二所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Pressure-sensitive adhesive is a type of adhesive that is sensitive to pressure. It is very convenient to use pressure-sensitive printed signs when pasting in the field. However, because road traffic signs are used outdoors , exposed to the sun, wind and rain for a long time, the pressure-sensitive adhesive is easy to age and lose its pressure sensitivity, causing the logo to peel off
However, the use of structural adhesives for bonding requires temporary glue application, which is inconvenient to operate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Component A of the structural pressure-sensitive adhesive of the present invention is composed of the following raw materials in weight ratio:

[0026] 2-ethylhexyl acrylate 5.6, butyl acrylate 5.6, vinyl acetate 1.0, methyl methacrylate 1.0, acrylic acid 0.7, hydrogenated rosin glyceride 2.1, dibenzoyl peroxide 0.04, ethyl acetate 59.96, cyclo Oxygen resin E-44 24.0.

[0027] The preparation of component A comprises the following steps:

[0028] (1) Weigh 2-ethylhexyl acrylate, butyl acrylate, vinyl acetate, methyl methacrylate, acrylic acid, dibenzoyl peroxide and 75% ethyl acetate into the mixing list in proportion Kettle, stirring while feeding to obtain the mixed material; the mixed material is divided into two parts for later use, wherein the first part is one-fourth of the mixed material used in step (3), the second part is three-quarters of it The mixed material is used in step (4).

[0029] (2) Add the remaining ethyl acetate to the reaction kettle while sti...

Embodiment 2

[0036] Component A of the structural pressure-sensitive adhesive of the present invention is composed of the following raw materials in weight ratio:

[0037] 2-ethylhexyl acrylate 7.0, butyl acrylate 7.0, vinyl acetate 1.25, methyl methacrylate 1.25, acrylic acid 0.85, hydrogenated rosin glyceride 2.6, dibenzoyl peroxide 0.05, ethyl acetate 60.0, cyclo Oxygen resin E-44 20.0

[0038] The preparation of component A comprises the following steps:

[0039] (1) Weigh 2-ethylhexyl acrylate, butyl acrylate, vinyl acetate, methyl methacrylate, acrylic acid, dibenzoyl peroxide and 45 parts in proportion (75 parts of ethyl acetate dosage %) into the mixed single kettle, and stirred while feeding to obtain the mixed material;

[0040] (2) Weigh 15 parts (i.e. 25% of the ethyl acetate dosage) of ethyl acetate and add it to the reaction kettle, while stirring and raising the temperature to 80-85°C;

[0041] (3) Add 1 / 4 of the mixed material to the reactor, and react for 1.5h;

[0042...

Embodiment 3

[0047] Ingredient A of the present invention is made up of the raw material of following weight ratio:

[0048] 2-ethylhexyl acrylate 8.4, butyl acrylate 8.4, vinyl acetate 1.5, methyl methacrylate 1.5, acrylic acid 1.0, hydrogenated rosin glyceride 3.1, dibenzoyl peroxide 0.06, ethyl acetate 60.04, cyclo Oxygen resin E-44 16.0

[0049] The preparation of component A comprises the following steps:

[0050] (1) Weigh 2-ethylhexyl acrylate, butyl acrylate, vinyl acetate, methyl methacrylate, acrylic acid, dibenzoyl peroxide and three-quarters of ethyl acetate into the mixing list in proportion Kettle, stirring while adding materials, that is, mixed materials;

[0051] (2) Add the remaining 1 / 4 ethyl acetate to the reaction kettle, while stirring and raising the temperature to 80-85°C;

[0052] (3) Add 1 / 4 of the mixed material to the reactor, and react for 1.5h;

[0053] (4) drop the rest of the mixed material in the reactor, and drop it in 4 hours;

[0054] (5) Add hydroge...

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PUM

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Abstract

The invention discloses a structural pressure-sensitive adhesive, a structural pressure-sensitive adhesive tape and a preparation method of the structural pressure-sensitive adhesive and the structural pressure-sensitive adhesive tape. The structural pressure-sensitive adhesive comprises a constituent A and a constituent B. The constituent A is obtained by polymerizing acrylic acid-2-ethylhexyl ester, butyl acrylate, vinylacetate, methyl methacrylate, acrylic acid, glycerol ester of hydrogenated rosin, dibenzoyl peroxide, ethyl acetate and epoxy resin in a reactor. The constituent A is coatedon a base material to manufacture a pressure-sensitive adhesive tape; the constituent B, which is polyfunctional organic amine epoxy hardener 2,4,6-tri(dimethylamino methyl)phenol, is painted on the surface of a pasted object; the pressure-sensitive adhesive tape is pasted on the surface of the pasted object to form the structural pressure-sensitive adhesive tape. The structural pressure-sensitive adhesive tape disclosed by the invention has pressure sensitivity at the beginning of use, and has the performances of structural adhesives at the later stage of use; the proportion of the tackinessagent A and the curing agent B is unnecessary to be determined, so the adhesive tape is convenient to use; in addition, the bonding strength is large, thus the structural pressure-sensitive adhesive tap is very suitable for field application.

Description

technical field [0001] The invention relates to a pressure-sensitive adhesive and a pressure-sensitive adhesive tape, in particular to a two-component cross-linked structure type acrylate pressure-sensitive adhesive and a pressure-sensitive adhesive tape. Background technique [0002] Pressure-sensitive adhesive is a type of adhesive that is sensitive to pressure. It is very convenient to use pressure-sensitive printed signs when pasting in the field. However, because road traffic signs are used outdoors , Long-term exposure to the sun, wind and rain, the pressure-sensitive adhesive is easy to age and lose its pressure sensitivity, causing the logo to peel off. However, the use of structural adhesives for bonding requires temporary glue application, which is inconvenient to operate. If structural pressure-sensitive adhesive is used, it can be easily pasted and has good weather resistance. Contents of the invention [0003] The purpose of the present invention is to provi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/02C09J133/08C09J193/04C09J7/02
Inventor 冯小平姜云刚姚小龙
Owner 中国航天科技集团公司第四研究院第四十二所
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