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Preparation method of photoresponse adhesive with strong adhesion under water and prepared photoresponse adhesive

A binder and light-responsive technology, applied in the field of polymer materials, can solve problems such as poor adhesion, and achieve the effects of improved adhesion, biocompatibility, good hydrophobicity, and excellent adhesion.

Active Publication Date: 2021-01-29
ANHUI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Vegetable oil has excellent hydrophobicity and has the potential to be used as an underwater adhesive material, but the simple vegetable oil-based adhesive has poor adhesion. Therefore, it is necessary to improve the existing vegetable oil-based adhesive

Method used

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  • Preparation method of photoresponse adhesive with strong adhesion under water and prepared photoresponse adhesive
  • Preparation method of photoresponse adhesive with strong adhesion under water and prepared photoresponse adhesive
  • Preparation method of photoresponse adhesive with strong adhesion under water and prepared photoresponse adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Preparation method of photoresponsive adhesive with strong adhesion under water, the preparation route is as follows figure 1 As shown, the degree of polymerization of the polymer is 600, m+2n=600, m is 420, n is 90, figure 1 The co represents the abbreviation of copolymerization.

[0056] Specifically include the following steps:

[0057] (1) Add 1.68mL epoxy camellia oil monomer (ECO) into the ampoule, add 291mg (TAc) thymine acrylate monomer and 300mg adenine acrylate monomer (AAc) to dissolve in 2.9mL N,N-di In methyl formamide (DMF); The structural formula of epoxy camellia oil monomer (ECO) is as follows in the present embodiment: ECO:AAc:TAc (molar ratio)=0.7:0.15:0.15 in the present embodiment, monomer AAc, The solid content of TAc and ECO is 45.8%, and the calculation method of solid content is: (0.291+0.300+1.68*1.024) / (2.9*0.945+0.291+0.300+1.68*1.024).

[0058] What adopt is that publication number is the epoxy camellia oil monomer of record in the pate...

Embodiment 2

[0061] Preparation method of photoresponsive adhesive with strong adhesion under water, the preparation route is as follows figure 1 As shown, the degree of polymerization of the polymer is 600, m+2n=600, m is 480, n is 60, figure 1 The co represents the abbreviation of copolymerization.

[0062] Specifically include the following steps:

[0063] (1) Measure 1.92mL ECO into the ampoule, add 194mg TAc and 200mg AAc and dissolve in 2.6mL DMF; The content is 49%, and the calculation method of the solid content is: (0.194+0.200+1.92*1.024) / (2.6*0.945+0.194+0.200+1.92*1.024).

[0064] (2) Prepare AIBN into 8.2 mg / mL DMF solution, add 200 μL into the ampoule in step (1), and seal the ampoule. After the mixed solution was subjected to multiple freeze-thaw cycles, it was reacted at 75° C. for 2 h under nitrogen gas. The obtained polymer was purified in methanol to obtain a light-responsive binder.

Embodiment 3

[0066] The difference between this example and Example 1 is that the molar ratio of ECO, AAc, and TAc is 0.9:0.05:0.05, and the solid content of AAc and TAc is 51.5%. correspond figure 1 m in is 540, and n is 30.

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Abstract

The invention discloses a preparation method of a photoresponse adhesive with strong adhesion under water, and relates to the technical field of polymer materials, and the preparation method comprisesthe following steps: (1) mixing an epoxy tea oil monomer, a thymine acrylate monomer and an adenine acrylate monomer, dissolving with a solvent, and then adding a polymerization initiator; and (2) removing oxygen by freezing and thawing circulation, introducing nitrogen, reacting at 75 DEG C for 2 hours, and purifying to obtain the photoresponse underwater adhesive. The invention also provides the photoresponse adhesive prepared by the preparation method. The preparation method has the beneficial effects that a one-pot method is adopted to introduce hydrogen-bond interaction between nuclear basic groups, on the basis that the preparation method is simple, the prepared adhesive has more excellent adhesion performance, biocompatibility and hydrophobicity, the adhesion performance is greatlyimproved, and the adhesive can be applied to vegetable oil-based underwater adhesives, the shearing strength of the adhesive is changed by adjusting the water temperature. And meanwhile, the adhesiveprepared by the invention has photoresponsiveness.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a method for preparing a photoresponsive adhesive with strong adhesion under water and the prepared photoresponsive adhesive. Background technique [0002] Underwater adhesives are widely used in daily life, marine, medical and other fields. However, achieving strong underwater adhesion is challenging due to the difficulty in displacing the water of hydration from the adhesive interface. This hydrated water film layer severely prevents the intimate chemical contact between the adhesive and the substrate, and thus, the surface energy of the adherend, which provides the driving force for the adhesion, is greatly reduced. For example, widely used cyanoacrylate adhesives exhibit strong adhesion in air, but when applied in water environments, they harden rapidly, forming a hard plastic layer that eventually leads to loss of adhesion. Commercial epoxies and polyurethanes ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/36C09J133/14C08J3/28C08L33/14
CPCC08F220/36C08J3/28C08J2333/14C09J133/14C08F220/365
Inventor 华赞吴疆朱光宇关礼衡李建军汪钟凯
Owner ANHUI AGRICULTURAL UNIVERSITY
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