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Green solvent-free bio-based antibacterial adhesive and preparation method thereof

A solvent-free and adhesive-free technology, applied in the direction of adhesives, etc., can solve the problems of unguaranteed antibacterial durability, increased adhesive cost, human health risks, etc., and achieve good antibacterial and biocompatibility, improved bonding effect, Significant antibacterial effect

Active Publication Date: 2022-02-11
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are certain pollution problems in ordinary adhesives: there are many volatile organic compounds (VOC) in adhesives, such as organic solvents in solvent-based adhesives; free formaldehyde in trialdehyde adhesives (phenolic, urea-formaldehyde, and melamine formaldehyde)
Although this patent also uses bio-based materials to prepare adhesives, its main antibacterial component is nano-silver material, which increases the cost of the adhesive on the one hand, and on the other hand, graphene and nano-silver have potential risks to human health, and nano-silver and The starch adhesive matrix is ​​physically mixed, easy to separate out, and the antibacterial durability cannot be guaranteed

Method used

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  • Green solvent-free bio-based antibacterial adhesive and preparation method thereof
  • Green solvent-free bio-based antibacterial adhesive and preparation method thereof
  • Green solvent-free bio-based antibacterial adhesive and preparation method thereof

Examples

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preparation example Construction

[0037] A preparation method of a green solvent-free bio-based antibacterial adhesive, comprising the following steps:

[0038] S1. Stir 5',5-diallyl-2,2'-biphenyldiol and trimethylolpropane tris(3-mercaptopropionate) at 120°C until the 5',5-diphenol The mass-number ratio of allyl-2,2'-diphenol to trimethylolpropane tris(3-mercaptopropionate) is 40-50:50-60;

[0039] S2. Lowering the temperature of the system to below 50°C to obtain a transparent oily mixture;

[0040] S3. Adding a catalyst to S2, wherein the mass fraction ratio of the catalyst to the S2 mixture is 1-3: 100;

[0041] S4. Stir the mixture obtained in S3 evenly to obtain a colorless transparent or yellow transparent oily liquid, which is the green solvent-free bio-based antibacterial adhesive.

[0042] One of the above green solvent-free bio-based antibacterial adhesives, or the application of the green solvent-free bio-based antibacterial adhesives prepared by any of the above preparation methods in wood, meta...

Embodiment 1

[0047] A preparation method of a green solvent-free bio-based antibacterial adhesive, comprising the following steps:

[0048] (1) Mix 40 parts by mass of 5',5-diallyl-2,2'-diphenol and 60 parts by mass of trimethylolpropane tris(3-mercaptopropionate) at 120°C , stirring at a speed of 200r / min to make the reactants mix evenly;

[0049] (2) reducing the temperature of the mixture in (1) to 50° C. to obtain a transparent oily mixture;

[0050] (3) Add 1 part of azobisisobutyronitrile to (2) and stir until evenly mixed to obtain a yellow transparent oily liquid, which is a green solvent-free bio-based antibacterial adhesive.

[0051] The green solvent-free bio-based antibacterial adhesive obtained in Example 1 was coated on a PTFE plate, and placed in an oven at 100°C for curing for 30 minutes, and then the cured adhesive film was characterized as follows.

[0052] See figure 1 Shown is the infrared spectrogram of the thermosetting adhesive prepared in Example 1. After the re...

Embodiment 2

[0054] A preparation method of a green solvent-free bio-based antibacterial adhesive, comprising the following steps:

[0055] (1) 50 mass parts of 5',5-diallyl-2,2'-diphenol and 50 mass parts of trimethylolpropane tris(3-mercaptopropionate) at 120°C , stirring at a speed of 200r / min to make the reactants mix evenly;

[0056] (2) reducing the temperature of the mixture in (1) to 50° C. to obtain a transparent oily mixture;

[0057] (3) Add 3 parts of azobisisobutyronitrile to (2) and stir until uniformly mixed to obtain a yellow transparent oily liquid, which is a green solvent-free bio-based antibacterial adhesive.

[0058] The green solvent-free bio-based antibacterial adhesive obtained in Example 2 was coated on a PTFE plate, and placed in an oven at 100°C for curing for 30 minutes, and then the cured adhesive film was characterized as follows.

[0059] See figure 2 Shown is the infrared spectrogram of the thermosetting adhesive that embodiment 2 makes. After the react...

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Abstract

The invention provides a green solvent-free bio-based antibacterial adhesive and a preparation method thereof. The adhesive is a multi-component adhesive comprising a first monomer, a second monomer, and a catalyst. The first monomer is a biphenol derivative containing at least two alkylene groups, and the second monomer is a multi-sulfydryl compound. When the adhesive is used, the components are mixed according to the proportion, heated and melted, then the surface of a base material is coated with the adhesive, and curing is initiated under the heating condition, so that bonding of the base material can be achieved. The prepared adhesive can form a dendritic or net-shaped polymer after being cured and cross-linked, so that the body strength of the adhesive is remarkably enhanced, the problem of low bonding strength of the adhesive caused by self fracture is solved, and the adhesive has the characteristics of being green, pollution-free, solvent-free, high in curing and bonding speed, high in bonding strength and excellent in antibacterial property.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a green solvent-free bio-based antibacterial adhesive and a preparation method thereof. Background technique [0002] Adhesive is a natural or synthetic, organic or inorganic substance that can connect two or more parts or materials together through interface adhesion and cohesion. "Adhesive" is a general standard term that also includes other glues, putties, mucilages, plasters, etc. Adhesives are widely used in industry and life, and can simplify industry and reduce costs in industrial production. [0003] At present, there are certain pollution problems in ordinary adhesives: there are many volatile organic compounds (VOC) in adhesives, such as organic solvents in solvent-based adhesives; free formaldehyde in trialdehyde adhesives (phenolic, urea-formaldehyde, and melamine formaldehyde). These volatile substances are discharged into the atmosphere, which is very harmful, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G75/045C09J181/02
CPCC08G75/045C09J181/02C08G2170/00Y02A50/30
Inventor 杨红军王宗垒王玉丽刚汉林庄燕周应山刘欣徐卫林
Owner WUHAN TEXTILE UNIV