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A kind of preparation method of polymer adhesive film with adjustable refractive index

An adhesive film and polymer technology, applied in the field of adhesives, can solve the problems of refractive index research of adhesive film, light source interference, damage to optical parts, etc., and achieve the effect of wide storage temperature range, saving bonding time and improving image quality.

Active Publication Date: 2020-12-08
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. No matter the epoxy optical adhesive or the UV curing optical adhesive will deteriorate if it is placed in the air for a long time;
[0007] 2. The part bonding process is manual operation, it is difficult to evenly apply adhesive on irregular or large-area parts;
[0008] 3. Applying uneven adhesive on the parts to be bonded will cause defects such as rainbow marks, air bubbles, and glue overflow in the bonding layer of the parts, which will affect the subsequent bonding process;
[0009] 4. Poorly bonded optical parts need to be soaked in organic solvents such as acetone and chloride when removing the glue, which will cause certain damage to the optical parts. In addition, it is difficult for the operator to avoid contact with organic solvents that are harmful to the body
[0010] 5. For the bonded optical parts, if the refractive index of the adhesive does not match the bonded parts near the light source, it will cause light source interference;
[0011] Although some epoxy-type optical adhesives and UV-curable adhesives have adjustable refractive index, and the patent of Sun Junqi of Jilin University and others (a method for preparing adhesive coating and adhesive film based on layer-by-layer assembly technology, ZL2012 1 0150883.5[P].2013-11-06), using layer-by-layer assembly technology to prepare a transparent adhesive coating and adhesive film with a uniform thickness that is not limited by the substrate, which can be placed in the air for a long time without deterioration, but does not No studies have been done on the refractive index of the adhesive film

Method used

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  • A kind of preparation method of polymer adhesive film with adjustable refractive index
  • A kind of preparation method of polymer adhesive film with adjustable refractive index

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1 A method for preparing a polymer adhesive film with adjustable refractive index, the polymer adhesive film is PEI / (PAA-PSS), the cationic element A is PEI, and the anionic element B-B 2 B and B 2 It is PAA and PSS; the molar ratio of PSS to PAA-PSS is 0.1:100, and the preparation steps and conditions are as follows:

[0045] (1) Preparation of cationic base PEI solution:

[0046] At room temperature, the molecular weight of 0.1g is 7.5×10 5 The cationic base PEI and 100mL deionized water were placed in the reactor, and stirred evenly to obtain a cationic base PEI solution with a mass volume concentration of 1.0mg / mL; the pH of the solution was adjusted to 9.0 with hydrochloric acid, and it was set aside;

[0047] (2) Preparation of anionic radical PAA-PSS solution

[0048] will be 2.55×10 -4 g molecular weight is 7.5×10 4 The anionic motif PSS and 9.98×10 -2 g molecular weight is 1.0×10 5 The anion element PAA and 100mL deionized water were placed in...

Embodiment 2

[0057] Embodiment 2 A method for preparing a polymer adhesive film with adjustable refractive index, the polymer adhesive film is PDDA / (PAA-PSS), the cationic element A is PDDA, and the anionic element B-B 2 B and B 2 For PAA and PSS, the molar ratio of PSS to PAA-PSS is 50:100, the steps and conditions of preparation are as follows:

[0058] (1) Preparation of cationic radical PDDA solution:

[0059] At room temperature, the molecular weight of 1.5g is 2.5×10 5 The cationic base PDDA and 100mL deionized water were placed in a reactor, and stirred evenly to obtain a cationic base PDDA solution with a mass volume concentration of 15.0mg / mL; the pH of the solution was adjusted to 7.0 with sodium hydroxide, and it was set aside;

[0060] (2) Preparation of anionic radical PAA-PSS solution

[0061] will be 3.6×10 -2 g molecular weight is 1.0×10 6 The anionic motif PSS and 1.4×10 -2 g molecular weight is 2.0×10 3 The anion element PAA and 100mL deionized water were placed in...

Embodiment 3

[0069] Embodiment 3 A method for preparing a polymer adhesive film with adjustable refractive index, the polymer adhesive film is PAH / (PAA-PSS), the cationic element A is PAH, and the anionic element B-B 2 B and B 2 For PAA and PSS, the molar ratio of PSS to PAA-PSS is 25:100, and the preparation steps and conditions are as follows:

[0070] (1) Preparation of cationic radical PAH solution:

[0071] At room temperature, the molecular weight of 1g is 1.7×10 4 Put cationic PAH and 100mL deionized water in a reactor, stir evenly to obtain a cationic PAH solution with a mass volume concentration of 10.0 mg / mL; adjust the pH of the solution to 9.0 with hydrochloric acid, and set aside;

[0072] (2) Preparation of anionic radical PAA-PSS solution

[0073] Convert 4.6×10 -1 g molecular weight is 7.0×10 4 The anionic motif PSS and 5.4×10 -1g molecular weight is 2.0×10 3 The anion element PAA and 100mL deionized water were placed in a reactor, and stirred evenly to obtain a mass...

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Abstract

The invention discloses a preparation method of a refractivity-adjustable macromolecular bonding film. The macromolecular bonding film with refractivity which can be adjusted in a range of 1.514-1.579 is prepared by a layer-by-layer assembly technique; the image quality can be improved after bonding. The bonding film can be stably stored for half a year under the humidity of 10-90% at the temperature of -190 to 60 DEG C. The prepared macromolecular bonding film can uniformly coat a large area of to-be-bonded parts made of various materials and provided with different shapes; optical parts on which a plurality of refractivity-adjustable macromolecular bonding films grow can be bonded under the action of water and pressure; an ultraviolet curing process is not needed; the bonding time is effectively reduced; the defects of bubbles, dust excessive adhesive, rainbow marks and the like generated in a bonding layer by the existing ultraviolet curing optical adhesive can also be avoided; the tensile strength of two bonding parts is 6.85+ / -1.94MPa; a used solvent is water and is not an organic solvent, so that the pollution to the environment and the harm to the body of an operator are avoided; after the bonding film is soaked in water again, an adhesive can be removed; the refractivity-adjustable macromolecular bonding film is suitable for adhesive removal of the bonding layers which cannot conform to the optical inspection condition.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and relates to a method for preparing a polymer adhesive film whose refractive index can be adjusted. Background technique [0002] Optical adhesive is a substance that is close to the optical performance of the part and can glue two or more optical parts together. With the development of science and technology, adhesives that are transparent in the visible light region are widely used, especially in the fields of optical instrument production, flat panel display, restoration of cultural relics, refractive index matching bonding, and art preparation. When bonding optical parts, the greater the difference between the refractive index of the adhesive and the parts to be bonded, the more serious the light scattering phenomenon will be caused. Therefore, more and more attention has been paid to matching the refractive index. [0003] At present, epoxy resin glue and ultraviolet light curing glue a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J5/02
CPCC09J5/02
Inventor 张健夫何源源李文斐王丹张兴黄荣斌
Owner CHANGCHUN UNIV OF SCI & TECH
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