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Adhesive and composition and application thereof

A technology of adhesives and compositions, applied in the direction of film/sheet adhesives, non-polymer adhesive additives, adhesives, etc., which can solve the problem of inability to use adhesive reel display components and the impact of anti-rebound performance The durability of curved surface bonding, the anti-rebound performance of the adhesive sheet is not ideal, etc., to achieve excellent anti-rebound performance, durable curved surface bonding, and the effect of absorbing continuous stress

Pending Publication Date: 2022-04-15
CROWN TAICANG ADHESIVE PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the currently developed adhesive sheets between the CPI and the substrate structural components in the OLED screen are designed for plane bonding, and these adhesive sheets perform poorly when used for curved surface bonding; the few currently studied Adhesive sheets with special functions can generally only achieve short-term surface bonding at room temperature, and cannot be used in scroll display display components that require long-lasting surface adhesion
Anti-rebound performance is an important performance that affects the durability of curved surface bonding. The current adhesive sheet is not ideal in terms of anti-rebound performance, and it is not enough to meet the increasingly high requirements of curved surface display components.

Method used

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  • Adhesive and composition and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] (1) Prepare the composition

[0066] A component: a total of 100 parts by weight, including 90 parts by weight of triblock copolymer a1 (block ratio is 22 / 78, diblock content is 15%, tensile strength is 20MPa, hardness is 45 Shore A, line type structure), 10 parts by weight of a-type triblock copolymer a2 (block ratio is 15 / 85, diblock content is 19%, tensile strength is 21MPa, hardness is 32 Shao A, linear structure);

[0067] Component B: a total of 25 parts by weight, including 15 parts by weight of terpene phenolic resin (about 150°C in softening point) and 10 parts by weight of terpene resin (about 120°C in softening point);

[0068] Antioxidant: a total of 1.5 parts by weight, including the antioxidant HPA (hindered phenols) of 1 part by weight and the second antioxidant PPA (phosphite esters) of 0.5 parts by weight;

[0069] Curing agent: a total of 1 part by weight, which is an isocyanate curing agent ICA;

[0070] Organic solvent: a mixture of toluene and n-h...

Embodiment 2

[0077] (1) Prepare the composition

[0078] A component: total 100 parts by weight, including the triblock copolymer a1 (same as embodiment 1) of 100 parts by weight;

[0079] Component B: a total of 20 parts by weight, including 12 parts by weight of terpene phenol resin (softening point about 140°C) and 8 parts by weight of terpene resin (softening point about 110°C);

[0080] Antioxidant: a total of 1 part by weight, including the antioxidant HPA (hindered phenols) of 0.7 parts by weight and the second antioxidant PPA (phosphite esters) of 0.3 parts by weight;

[0081] Curing agent: a total of 1 part by weight, which is an isocyanate curing agent ICA;

[0082] Organic solvent: a mixture of toluene and n-heptane at a volume ratio of 1:1.

[0083] (2) Preparation of adhesive

[0084] Mixing the prepared composition and stirring to dissolve each component in an organic solvent to obtain an adhesive glue;

[0085] Use a knife coater to coat the adhesive glue solution on the...

Embodiment 3

[0089] (1) Prepare the composition

[0090] A component: a total of 100 parts by weight, including 95 parts by weight of triblock copolymer a1 (same as Example 1), 5 parts by weight of triblock copolymer a2 (same as Example 1);

[0091] Component B: 25 parts by weight in total, including 10 parts by weight of the first terpene resin (softening point about 160°C) and 15 parts by weight of the second terpene resin (softening point about 120°C);

[0092] Antioxidant: a total of 1.5 parts by weight, including the antioxidant HPA (hindered phenols) of 1 part by weight and the second antioxidant PPA (phosphite esters) of 0.5 parts by weight;

[0093] Curing agent: a total of 1 part by weight, which is an isocyanate curing agent ICA;

[0094] Organic solvent: a mixture of toluene and n-heptane at a volume ratio of 1:1.

[0095] (2) Preparation of adhesive

[0096] Mixing the prepared composition and stirring to dissolve each component in an organic solvent to obtain an adhesive gl...

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Abstract

The invention relates to the field of adhesives, in particular to an adhesive composition, an adhesive containing or obtained from the composition and application of the adhesive. The adhesive composition comprises a component A and a component B, wherein the component A comprises one or more triblock copolymers with an X-Y-X structure, an X block is a styrene chain segment, and a Y block is an isoprene chain segment; and the component B comprises one or more resin compounds with the softening point of 80-150 DEG C. The adhesive prepared from the adhesive composition disclosed by the invention has excellent cohesiveness and excellent rebound resistance under high-temperature and high-humidity conditions, can effectively absorb continuous stress caused by a bending state of a substrate structural member when being used for curved surface bonding, and has a wide application prospect; for example, the adhesive can be used for permanent curved surface adhesion of scroll screen display components.

Description

technical field [0001] The invention relates to the field of adhesives, in particular to an adhesive composition, an adhesive containing or obtained from the composition and the application of the adhesive. Background technique [0002] In recent years, the display of electronic equipment has shown concepts and trends such as large size and curved surface (arc), and this type of electronic equipment has received strong repercussions and wide expectations from the consumer market, such as scrolling displays. The scroll display uses the scroll device in the component to realize the shrinkage, curling, unfolding, etc. of the display component, so as to obtain a larger display size, and at the same time, the edge part of the display module also has a certain curvature. Adhesive sheets are required for bonding inside curved surface display components. [0003] However, the currently developed adhesive sheets between the CPI and the substrate structural components in the OLED scr...

Claims

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Application Information

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IPC IPC(8): C09J153/02C09J145/00C09J11/06C09J7/30
CPCC09J153/02C09J11/06C09J7/30C09J2301/124C09J2467/006C09J2453/00C08L2205/025C08L53/02C08L45/00C08K5/521Y02E10/50
Inventor 蒋立向岳美麦启波
Owner CROWN TAICANG ADHESIVE PROD CO LTD
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