Special fluorine-containing pressure-sensitive adhesive and preparation method thereof

A fluorine-containing pressure-sensitive adhesive and fluorine-containing pressure-sensitive technology are applied in the direction of pressure-sensitive films/sheets, adhesives, film/sheet-shaped adhesives, etc., which can solve the problem of poor bonding effect between adhesives and material surfaces, high cost, The problem of material surface damage and other problems can be achieved, and the effect of excellent initial tack, low production cost and fast crosslinking speed can be achieved

Active Publication Date: 2021-05-11
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a special fluorine-containing pressure-sensitive adhesive and its preparation method to solve the problem of poor bonding effect between the adhesive and the surface of the material in the prior art, the need for special equipment processing and high cost. , will also cause damage to the surface of the material

Method used

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  • Special fluorine-containing pressure-sensitive adhesive and preparation method thereof
  • Special fluorine-containing pressure-sensitive adhesive and preparation method thereof
  • Special fluorine-containing pressure-sensitive adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 25～29

[0062]Examples 25 to 29 The adhesive A components of the special-containing fluorine-containing pressure sensitive adhesive, the pentafluorobenzene function monomer is pentafulffenzyl acrylate, and the soft monomer is ethyl acrylate, and the hard monomer is styrene. The combination of methyl methacrylate is shown in Table 11.

[0063]Table 11

[0064] Mol)Example 25Example 26Example 27Example 28Example 29 Ethyl acrylate6.565.554.5 Acrylate22222 Styrene11111 Glycerol ester with methacrylate0.511.522.5 Azobiobutyronitrile0.0250.0250.0250.0250.025 Ethyl acetate4040404040

[0065]The same detection method as in Examples 1 to 5 is used, and the performance of the performance of Examples 25 to 29 is shown in Table 12.

[0066]Table 12

[0067] Example 25Example 26Example 27Example 28Example 29 Tucalyptus (ball)14131075 His stickiness (time / min)128160350389456 180 ° stripping [N / 25mm]13.313.814.314.315.4

[0068]Examples 30 to 34 The adhesive A components of the special-containing fluorine-contain...

Embodiment 59

[0117]According to the moisture mass ratio, each component was calculated: take a certain amount of acetone in a single-mouth flask, add 5-8 mol of potassium carbonate suspended in acetone, 1.5-4 mol acrylic acid, 1-2 mol of pentafluoride, 0.1 ~ 0.3 Mmol 2,6-di-tert-butyl phenol. Condensation of 65 ° C for 3 hours, the reaction was completed, filtered, the residue was dissolved in diethyl ether, and extracted with water, the aqueous phase was eluted with sodium bicarbonate and water, and the organic phase was removed with anhydrous sodium sulfate to remove the solvent. Finally, the product acrylate pentafluorine was isolated by column chromatography.

[0118]Reaction formula:

[0119]

Embodiment 60

[0121]According to the moisture mass ratio: Take a certain amount of dichloromethane in a single mouth flask, add 2-5 mol of triethylamine, 2-4 mol acryloyl chloride, 1-3 mol of pentafluorine, room temperature reaction 2-3 Hour, the reaction was completed. Extraction, the organic phase was removed from water with anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure. Finally, the product acrylate is separated by column chromatography.

[0122]Reaction formula:

[0123]

[0124]Third, a method of preparing a special fluorine-containing pressure sensitive glue

[0125]The method of preparing the special-containing fluorine-containing pressure sensitive adhesive of the present invention includes the following steps:

[0126](1) Under the protection of argon, the raw material sequentially added to the reactor in the reactor, and after washing and drying, pure polymer;

[0127](2) The polymer obtained by step (1) is applied to the fluoropolymer material to obtain a special-contai...

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Abstract

The invention discloses a special fluorine-containing pressure-sensitive adhesive which is characterized by comprising an adhesive and a base material, wherein the adhesive is coated on the surface of one side of the base material; the adhesive comprises a component A and a component B, the component A comprises the following components in percentage by mole: 5%-50% of a pentafluorobenzene-containing functional monomer, 0.1%-0.5% of an initiator, 50%-95% of a soft monomer, 0%-50% of a hard monomer, and 0%-50% of a cross-linking agent; and the component B is a solvent, and the mole number of the component B is 3-8 times of the total mole number of the component A. The special pressure-sensitive adhesive disclosed by the invention has the advantages that the cohesion, solvent resistance, adhesive force and the like for fluorine-containing polymer materials during bonding are well guaranteed, the crosslinking speed is high, and no solvent is discharged at the same time. The invention further provides a preparation method of the special fluorine-containing pressure-sensitive adhesive, and a new thought and a development direction are provided for development of the pressure-sensitive adhesive.

Description

Technical field[0001]The present invention relates to the technical field of fluorine-containing material, and more particularly to a special fluorine-containing pressure sensitive adhesive and a preparation method thereof.Background technique[0002]With the rapid growth of national economies, a large number of fluorine-containing products are poured into various areas such as aviation, environmental protection, communications, and medical care. The pressure-sensitive adhesive as part of the adhesive, due to pressure sensitive adhesive material, can completely complete bonding at room temperature, with a slight pressure load can be attached in a variety of different Excellent properties such as the surface of the substrate and the residue after the substrate is peeled off.[0003]When the substrate is used to use an inert material, since the non-polarity of the inert material is high, the surface energy is low, the wettability is poor, and the general adhesive is not good to the bondin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/22C09J7/38C09J133/08C09J133/12C09J133/14C09J133/16
CPCC09J7/22C09J7/385C09J133/16C08F220/1804C08F220/14C08F220/325C08F220/1802C08F220/1808C09J2433/00C09J2400/226C08F220/24C08F212/08
Inventor 马小燕李伟邹伟颜杰杨虎李颜利郑汶江梁晓峰
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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