Graphene UV pressure-sensitive adhesive and preparation method thereof

A technology of graphene and pressure-sensitive adhesives, applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve the problem of poor adhesion between porous and cured layers and substrates, uneven curing, compression and Reduced fatigue resistance and other issues, to achieve excellent mechanical strength and reliable stability, good curing rate and curing degree, appropriate weight ratio and volume ratio

Inactive Publication Date: 2020-05-12
SUZHOU TONGLI PHOTOELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional metals and metal oxides and other electronic electrification functions are single and limited, and low-volume filling cannot form an effective closed circuit and conduction. High-volume filling occupies a large volume ratio and weight ratio in the acrylic matrix resin, and is easy to migrate, settle and delaminate. Seriously affect the curing rate and degree of curing of acrylic light-curing materials, curing defects become more and more obvious, and problems such as uneven curing, porous and weak adhesion between the cured layer and the substrate often appear
A large number of functional fillers increase the surface tension of acrylic light-cured pressure-sensitive adhesives, disappear viscoelasticity and viscous force, increase the elastic modulus, severely reduce the compression and fatigue resistance, and produce mechanical stress on electronic components during operation, destroying sensitive components. device
Moreover, functionalized metals, metal oxides and acrylic composites have poor operational stability. In special environments such as humidity and heat, the force and functionality will gradually disappear with time, and the reliability will be seriously affected.

Method used

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  • Graphene UV pressure-sensitive adhesive and preparation method thereof
  • Graphene UV pressure-sensitive adhesive and preparation method thereof
  • Graphene UV pressure-sensitive adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1: A kind of graphene UV pressure sensitive adhesive and preparation method

[0047] A graphene UV pressure-sensitive adhesive is characterized in that it comprises the following components and percentage by weight:

[0048]

[0049] The aromatic urethane acrylate conforms to the compound of structural formula

[0050] CH 2 CHCOOCH 2 CH 2 OOCNHR 1 NHCOOR 2 OOCNHR 1 NHCOOCH 2 CH 2 OOCCHCH 2 Formula A;

[0051] where R 1 represents tolyl; where R 2 stands for [CH 2 CH 2 O]m[CH 2 CHO(CH 3 )] n, n=5, m=2; at 25°C, the viscosity is within 500-1000mPa·s, the molecular weight is within 1000-2000, and the glass transition temperature (Tg,°C) is controlled within -30-30.

[0052] The aliphatic urethane acrylate is a compound meeting the general formula C:

[0053] CH 2 CHCOOCH 2 CH 2 OOCNHR 1 NHCOOR 2 OOCNHR 1 NHCOOCH 2 CH 2 OOCCHCH 2 Formula C;

[0054] where R 1 Represents hexamethylene; where R 2 stands for [CH 2 CH 2 O]n, n=5; a...

Embodiment 2

[0071] Embodiment 2: A kind of graphene UV pressure sensitive adhesive and preparation method

[0072] A kind of graphene UV pressure-sensitive adhesive, comprises the raw material of following mass percentage:

[0073]

[0074] A preferred embodiment is: the aromatic urethane acrylate is a mixture of compounds conforming to general formula A and general formula B in a mass ratio of 1:1:

[0075] CH 2 CHCOOCH 2 CH 2 OOCNHR 1 NHCOOR 2 OOCNHR 1 NHCOOCH 2 CH 2 OOCCHCH 2

[0076] Formula A;

[0077] CH 2 CHCOOCH 2 CH 2 OOCNHR 1 NHCOOR 2 OOCNHR 3 NHCOOCH 2 CH 2 OOCCHCH 2

[0078] Formula B;

[0079] where R 1 Represent xylylene; where R 2 stands for [CH 2 CH 2 O] n, n=10; R 3 Represents xylylene; at 25°C, the viscosity is 500-1000mPa·s.

[0080] A preferred embodiment is: the aliphatic urethane acrylate is a mixture of compounds conforming to the general formula C and the general formula D in a mass ratio of 1:1:

[0081] CH 2 CHCOOCH 2 CH 2 OOCNHR...

Embodiment 3

[0106] Embodiment 3: A kind of graphene UV pressure sensitive adhesive and preparation method

[0107] A kind of graphene UV pressure-sensitive adhesive, comprises the raw material of following mass percentage:

[0108]

[0109] A preferred embodiment is: the aromatic urethane acrylate is a compound conforming to the general formula B:

[0110] CH 2 CHCOOCH 2 CH 2 OOCNHR 1 NHCOOR 2 OOCNHR 3 NHCOOCH 2 CH 2 OOCCHCH 2

[0111] Formula B;

[0112] where R 1 represents tolyl; where R 2 stands for [CH 2 CH 2 O]m[CH 2 CHO(CH 3 )] n, n=2, m=3; R 3 Represents hexamethylene; at 25°C, the viscosity is 500-1000mPa·s.

[0113] A preferred embodiment is: the aliphatic urethane acrylate is a compound conforming to the general formula C:

[0114] CH 2 CHCOOCH 2 CH 2 OOCNHR 1 NHCOOR 2 OOCNHR 1 NHCOOCH 2 CH 2 OOCCHCH 2 Formula C;

[0115] where R 1 Represents hexamethylene; where R 2 stands for [CH 2 CH 2 CH 2 CH 2 O]n, n=5; at 25°C, the viscosity is 500-1...

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Abstract

The invention discloses a graphene UV pressure-sensitive adhesive and a preparation method thereof. The graphene UV pressure-sensitive adhesive has a formula comprising the following raw materials: aromatic carbamate acrylate, aliphatic carbamate acrylate, polysiloxane acrylate, an active diluent, tackifying resin, a photosensitive initiator, a stabilizer, graphene, a carbon nanotube, a carbon interface treating agent, a silane coupling agent and a functional additive. The graphene UV pressure-sensitive adhesive provided by the invention is light in weight, viscoelastic, fine and uniform in cross-section foam pores, is firm in bonding with a base material due to the interaction between a graphene nanometer film and an organic silicon material base body, excellent in compression resistance,impact resistance and thermal stability, and applicable to lightweight application scenes like sealed damping, microwave absorption, electromagnetic shielding and heat dissipation protection. Compared with the prior art, the graphene UV pressure-sensitive adhesive provided by the invention has the following physical properties: the electromagnetic and thermal simultaneous shielding performance isachieved; proper weight ratio and volume ratio are controlled; good curing rate and curing degree are achieved; and excellent mechanical strength and reliable stability are achieved through the synergistic effect of all the components.

Description

technical field [0001] The invention belongs to the technical field of adhesive materials, and relates to a graphene UV pressure-sensitive adhesive and a preparation method thereof. Background technique [0002] Acrylic acid and acrylate oligomers are composed of unsaturated double bonds such as acryloxy, vinyl and allyl groups and esterified groups such as epoxy, polyurethane, polysiloxane and polyether. The hybrid structure of unsaturated oligomers makes free radical photocurable materials have the properties of epoxy, polyurethane, polysiloxane, polyether and acrylic acid and acrylate, impact resistance, weather resistance, chemical resistance The high performance and excellent physical strength make acrylic light-curing materials more and more prominent, and it is easier to meet the requirements of high-speed assembly line operations and efficient industrial production. Light-curing pressure-sensitive adhesives are a distinctive branch of the application field of acryli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/07C09J175/16C09J11/04C09J11/06C09J11/08
CPCC08K2201/001C08K2201/011C08K2201/014C08L2205/025C08L2205/035C09J11/04C09J11/06C09J11/08C09J183/04C08L75/16C08L83/12C08K13/02C08K3/042C08K3/041C08K5/32C08K5/55C08L83/04C08K5/13
Inventor 蒋璐瑶
Owner SUZHOU TONGLI PHOTOELECTRIC CO LTD
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