Acrylic Adhesive Composition for Stable High-Temperature Protection
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Solution Overview
Problem
Existing acrylic adhesives for protective films on display devices face challenges in maintaining adhesive force stability under high temperature conditions and are prone to aging variations, leading to increased adhesive force and potential contamination issues.
Innovation Solution
An acrylic adhesive composition comprising 120-250 parts by weight of acrylic monomers, 0.1-1 part by weight of azo initiator, 0.5-1 part by weight of silica filler, 1.5-2.5 parts by weight of crosslinking agent, and 0.5-1 part by weight of anti-static agent, which are polymerized to achieve a weight average molecular weight of 450,000 to 900,000, enhancing adhesive properties and reducing aging variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If existing acrylic adhesives are used for protective films, then initial adhesive force is achieved, but adhesive force increases under high temperature conditions causing contamination issues
Solution Approach 1:
The patent modifies the chemical composition parameters of the acrylic adhesive by incorporating specific functional monomers (carboxyl-containing and hydroxyl-containing monomers) and controlling the molecular weight distribution. This compositional parameter change enables the adhesive to maintain stable adhesive force under high temperature conditions without excessive increase, thereby preventing contamination issues
Solution Approach 2:
The patent creates a composite acrylic adhesive system by combining multiple functional monomers (acrylic acid, 2-hydroxyethyl acrylate, and other copolymerizable monomers) to form a copolymer structure. This composite material approach allows the adhesive to exhibit improved thermal stability and controlled adhesive force characteristics at elevated temperatures
2Reliability
If acrylic adhesive composition is optimized for stable adhesive force, then adhesive properties improve, but manufacturing complexity increases
Solution Approach 1:
The patent establishes specific parameter ranges for monomer ratios (carboxyl-containing monomer: 5-20 parts by weight, hydroxyl-containing monomer: 5-20 parts by weight relative to 100 parts by weight of acrylic monomer) and molecular weight (450,000-900,000) that achieve reliable adhesive performance. By defining these precise parameters, the patent simplifies the manufacturing process while ensuring consistent adhesive force stability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The adhesive composition provides stable initial adhesive force and minimizes adhesive force increase under high temperature conditions, preventing contamination and ensuring effective protection and easy separation of the protective film from electronic surfaces.
Implementation Method 1
an acrylic polymer obtained by polymerizing a mixture of about 120 parts by weight to about 250 parts by weight of acrylic monomers with about 0.1 parts by weight to about 1 parts by weight of an azo initiator
Implementation Method 2
about 1.5 parts by weight to about 2.5 parts by weight of a crosslinking agent
Data Source
AI summary
Disclosed is an acrylic adhesive, including an acrylic polymer obtained by polymerizing a mixture of about 120 parts by weight to about 250 parts by weight of acrylic monomers with about 0.1 parts by weight to about 1 parts by weight of an azo initiator, about 0.5 parts by weight to about 1 parts by weight of a filler, about 1.5 parts by weight to about 2.5 parts by weight of a crosslinking agent, and about 0.5 parts by weight to 1 parts by weight of an anti-static agent.