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Single-component airtight adhesive and preparation method thereof

An adhesive, one-component technology, used in adhesives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve the problem of high hardness of epoxy adhesives, inability to bend writing devices, and high modulus. problem, to achieve the effect of excellent mechanics, excellent stability and durability

Pending Publication Date: 2021-11-05
SHENZHEN SAPIENCE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, due to the shortcomings of high hardness, brittleness and high modulus of epoxy adhesive, when used in hard glass or plastic display devices, the writing device cannot be bent, thus limiting the application field of epoxy adhesive

Method used

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  • Single-component airtight adhesive and preparation method thereof

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preparation example Construction

[0054] The second aspect of the present invention provides a method for preparing a one-component airtight adhesive. The preparation method for the one-component airtight adhesive includes the following preparation steps: premixing the raw materials of the airtight adhesive, aging, filtering, It can be obtained by dispersing and refining.

[0055] The one-component airtight adhesive in the invention can be used in the fields of electronics, aviation, aerospace, etc., and the airtight sealing of flexible display thin film devices, so as to improve the service life.

[0056] In addition, unless otherwise specified, the raw materials used in the present invention can be obtained commercially.

Embodiment 1

[0059] A kind of one-component airtight adhesive, the raw material of described airtight adhesive comprises, by weight, 40 parts of epoxy resins, 6.5 parts of multifunctional epoxy monomers, 10 parts of nitrile rubbers, 24.5 parts of curing agents, even 3 parts of joint agent, 20 parts of inorganic filler, 2 parts of fumed silica, 0.2 parts of stabilizer;

[0060] Described epoxy resin comprises organosilicon epoxy resin; The raw material of described organosilicon epoxy resin comprises novolac epoxy resin, organosilicon resin, and its weight ratio is 89:10; The preparation method of described organosilicon epoxy resin is : Mix novolac epoxy resin and silicone resin in a reaction vessel, then add catalyst, stir and react at 120°C for 2.5h to obtain silicone epoxy resin; the catalyst is dibutyltin dilaurate (CAS No.: 77- 58-7); The weight ratio of the catalyst to the silicone resin is 1:10; the epoxy equivalent of the novolak epoxy resin is 174g / eq; the novolak epoxy resin is J...

Embodiment 2

[0069] A one-component airtight adhesive, its specific implementation method is the same as that of Example 1, the difference is that there is no polyurethane modified epoxy resin.

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Abstract

The invention relates to the technical field of adhesives, in particular to a single-component airtight adhesive and a preparation method thereof. The airtight adhesive is prepared from the following raw materials in parts by weight: 25 to 55 parts of epoxy resin, 3 to 10 parts of multifunctional epoxy monomer, 5 to 15 parts of nitrile rubber, 12 to 40 parts of curing agent, 0.5 to 5 parts of coupling agent, 10 to 30 parts of inorganic filler, 0.5 to 5 parts of fumed silica and 0.1 to 1 part of stabilizer. The airtight adhesive has excellent mechanical performance, electrical performance, chemical resistance and the like, and due to the performance, the airtight adhesive shows excellent stability and durability and is widely applied to the fields of electronics, aviation, spaceflight and the like.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a single-component airtight adhesive and a preparation method thereof. Background technique [0002] In recent years, electronic materials and composite materials have been developed rapidly. Electronic equipment and electronic products are being updated faster and faster, and the performance requirements for various materials are also getting higher and higher. All walks of life are looking for breakthroughs and innovations. The main advantage of sustainable competition comes from innovation that surpasses competitors. For example, in terms of display film technology, flexible display technology has become a new trend in the industry. These materials also put forward higher requirements for sealing performance. The writing materials are sealed with adhesives, among which epoxy adhesives are used more frequently. [0003] However, due to the shortcomings of high hardness, b...

Claims

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Application Information

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IPC IPC(8): C09J163/04C09J163/00C09J11/04C09J11/06C09J11/08C08G77/42
CPCC09J163/04C09J11/04C09J11/06C09J11/08C08G77/42C08L2201/14C08L2201/08C08L2205/03C08L2205/02C08K2201/014C08K2201/005C08L63/00C08L15/00C08K13/04C08K7/26C08K5/5435C08K3/36C08K5/544
Inventor 王继宝周翠苹
Owner SHENZHEN SAPIENCE TECH CO LTD
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