Surface modifying composition, modified product, and method of producing modified product
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Solution Overview
Problem
Existing surface modification techniques for high-density polyethylene and ultra-high molecular weight polyethylene are inadequate, particularly for improving adhesion and coating properties, and existing methods are inconvenient or ineffective.
Innovation Solution
A surface modifying composition comprising a copolymer with specific monomers and solvents is used to modify the surface of high-density and ultra-high molecular weight polyethylene, utilizing cocrystal interactions to enhance adhesion and coating properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If hydrophilic treatment (corona discharge or flame treatment) is applied to polyethylene surface, then coating property and printability are improved, but the method is inconvenient and cannot be conveniently utilized
Solution Approach 1:
The patent introduces a copolymer as an intermediary substance that mediates between the polyethylene surface and the coating/dye materials. The copolymer contains a first monomer unit that interacts with the polyethylene surface and a second monomer unit that provides functional groups for coating and printing, thereby improving coating property without requiring inconvenient corona discharge or flame treatment
Solution Approach 2:
The patent changes the chemical composition parameters of the polyethylene surface by applying a copolymer composition rather than physical treatment methods. The copolymer contains specific monomer units with functional groups that modify the surface chemistry, enabling improved coating and printing properties through compositional change rather than physical energy treatment
2Ease of manufacture
If surface modification is applied to high-density polyethylene and ultra-high molecular weight polyethylene, then adhesion and coating properties are improved, but the modification is particularly challenging compared to low-density polyethylene
Solution Approach 1:
The copolymer acts as an intermediary that bridges the gap between the difficult-to-modify high-density polyethylene surface and the desired coating/dye materials. The first monomer unit of the copolymer interacts with the polyethylene surface while the second monomer unit provides functional groups, thereby achieving adhesion improvement without requiring complex modification procedures
Solution Approach 2:
The patent uses a composite copolymer material combining two different monomer units with complementary functions. The first monomer unit (with aliphatic groups) provides surface interaction capability while the second monomer unit (with amino, epoxy, or ether groups) provides functional properties for adhesion and coating, creating a composite material that simplifies the modification of high-density polyethylene
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 composition effectively modifies the surface of high-density and ultra-high molecular weight polyethylene, improving adhesion strength and dye-affinity, with strong bonding that withstands high temperatures and solvents.
Implementation Method 1
utilizing cocrystal interactions to enhance adhesion and coating properties
Implementation Method 2
a solvent having a boiling point of 100° C. or more
Data Source
AI summary
A surface modifying composition for modifying a surface of a formed product made of high-density polyethylene or ultra-high molecular weight polyethylene, the composition comprising:a copolymer having a unit of a first monomer having an aliphatic group having 10 or more carbon atoms and a unit of a second monomer having any of an amino group, an epoxy group, and an ether group, anda solvent having a boiling point of 100° C. or more and being at least one selected from the group consisting of a halogen-based solvent, an alkane solvent, a cycloalkane solvent, a dicycloalkane solvent, an aromatic solvent, and a nitro-based solvent.