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Adhesive for light-reflecting particles and preparation method thereof

A technology of adhesives and particles, applied in the direction of adhesive types, polyurea/polyurethane adhesives, adhesives, etc., can solve problems such as poor hand feeling, reduced product practicability, and weather resistance limitations, and achieve improved adhesion and adhesion Function, increase cohesive energy, polarity, and easy softness

Active Publication Date: 2010-04-28
NANTONG GAOMENG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the adhesive composition of acrylic series inorganic reflective particles has poor adhesion fastness to glass beads, and the solvent resistance is not up to standard, which reduces the practicability of the product
[0004] U.S. Patent CN95196332.5 is a polyurethane type reflective adhesive invented by 3M Company in the United States. Its performance is better than that of the current domestic acrylic series of reflective adhesives, but its weather resistance is poor, and the film formed is relatively hard and has poor hand feeling.
Patent CN1746251A further improves the softness and weather resistance of the reflective film on the basis of 3M's invention, but due to the characteristics of polyurethane itself, its weather resistance is always limited, and the price of polyurethane raw materials is expensive, which limits the product's application in ordinary occasions. use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This embodiment provides a binder for inorganic reflective particles, which is a composition consisting of component A and component B mixed in a weight ratio of 100:5-9, wherein,

[0036] (1) The composition and mass percentage of component A are as follows:

[0037] Acrylate soft monomer 30-55%, functional monomer containing carboxyl or hydroxyl group 0.2-5%, cross-linking monomer containing hydroxyl group 0.5-10%, non-alcohol solvent 40-60%, oil Soluble initiator 0.2-5%, mercaptan chain transfer agent 0.05-0.2%;

[0038] (2) B component:

[0039] Low-molecular-weight polymers with an NCO percentage of 10-14% are used.

[0040] The acrylate soft monomers in the above adhesive component A include: ethyl acrylate, isopropyl acrylate, propyl acrylate, butyl acrylate, isobutyl acrylate, tert-butyl acrylate, octyl acrylate, isopropyl acrylate Octyl esters (2-ethylhexyl acrylate) or any combination of any two.

[0041] The functional monomers containing carboxyl or hydr...

Embodiment 2

[0066] This embodiment 2 provides a binder for inorganic reflective particles, which is prepared by mixing component A and component B in a weight ratio of 100:6, wherein:

[0067] A component comprises each raw material by following weight ratio:

[0068] raw material weight

[0069] Butyl acrylate 165g

[0070] Ethyl acrylate 23.4g

[0071] Acrylic acid 2g

[0072] Hydroxyethyl Acrylate 4g

[0073] Ethyl acetate 265g

[0074] Benzoyl Peroxide 2.4g

[0075] Dodecylmercaptan 0.2g;

[0076] B component comprises each raw material by following weight ratio:

[0077] Isocyanate curing agent L-75 and non-alcohol solvent toluene;

[0078] Above-mentioned adhesive is prepared by following method:

[0079] Preparation of component A: Mix all comonomers (butyl acrylate, ethyl acrylate, acrylic acid, hydroxyethyl acrylate) with 1.92g of benzoyl peroxide, take 66.5g of monomer mixture and 88.3g of non-alcoholic solvent (Ethyl acetate) was blended and added to the reactor, the ...

Embodiment 3

[0084] This embodiment 3 provides a binder for inorganic reflective particles, which is prepared by mixing component A and component B in a weight ratio of 100:5, wherein:

[0085] A component comprises each raw material by following weight ratio:

[0086] raw material weight

[0087] 2-Ethylhexyl Acrylate 15g

[0088] Butyl acrylate 173g

[0089] Methacrylic acid 3g

[0090] Hydroxyethyl Acrylate 4g

[0091] Ethyl acetate 265g

[0092] Azobisethylbutyronitrile 1g;

[0093] Dodecyl Mercaptan 0.3g

[0094] Component B includes the following raw materials:

[0095] Isocyanate curing agent L-75 and non-alcoholic solvent ethyl acetate.

[0096] Above-mentioned adhesive is prepared by following method:

[0097] Preparation of component A: Mix all comonomers (2-ethylhexyl acrylate, butyl acrylate, methacrylic acid and hydroxyethyl acrylate) with 1.48 g of benzoyl peroxide to obtain a mixed solution, take 69 g of the The mixed solution and 88.3g of ethyl acetate were added ...

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Abstract

The invention discloses adhesive for light-reflecting particles and a preparation method thereof, which belongs to the technical field of adhesive preparation. The adhesive comprises a component A and a component B which are mixed in a weight ratio of 100:5-9, wherein the component A comprises the following raw materials in percentage by mass: 30 to 55 percent of acrylate soft monomer, 0.2 to 5 percent of functional monomer containing carboxyl or hydroxyl groups, 0.5 to 10 percent of crosslinking monomer containing hydroxyl groups, 40 to 60 percent of non-alcohol solvent, 0.2 to 5 percent of oil-soluble initiator and 0.05 to 0.2 percent of thiol chain transfer agent; and the component B adopts low-molecular polymer with the content of NCO between 10 and 14 percent. The crosslinking monomer containing hydroxyl groups in the component A of the adhesive undergoes crosslinking reaction with NCO in the component B to increase the cohesive energy and polarity of an adhesive system, thereby increasing the adhesive bonding action of the system on base materials and inorganic light-reflecting particles.

Description

technical field [0001] The invention belongs to the field of synthesis of polymer adhesives, in particular to an adhesive for reflective particles and a preparation method thereof. Background technique [0002] Setting reflective logos on clothing is currently more mature in Europe and North America, and there are legally mandated materials. At present, it is only used in specific areas in China, such as reflective police uniforms and other clothing. The appearance of the reflective material greatly reduces the potential safety hazards in traffic and improves the safety of road traffic, especially at night. [0003] At present, the adhesive composition of acrylic series inorganic reflective particles has poor adhesion fastness to glass beads, and the solvent resistance is not up to standard, which reduces the practicability of the product. [0004] U.S. Patent CN95196332.5 is a polyurethane type reflective adhesive invented by 3M Company of the United States. Its performanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04
Inventor 李岗沈峰邓煜东
Owner NANTONG GAOMENG NEW MATERIAL
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