Impact-Reinforced Acrylic Nanostructured Matrix
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Solution Overview
Problem
Current acrylic materials with a frosted or matte appearance are rigid and lack impact resistance, limiting their application in fields like design and material coatings due to their fragility and poor flexibility.
Innovation Solution
A semi-rigid or flexible acrylic material is developed, comprising a nanostructured matrix of thermoplastic acrylic block copolymer and highly crosslinked acrylic copolymer, which provides improved impact resistance, UV radiation resistance, and a soft touch surface, achieved through controlled radical polymerization and suspension polymerization processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If crosslinked acrylic beads are dispersed in a PMMA matrix to achieve frosted appearance and UV resistance, then light diffusion and UV resistance are improved, but impact resistance and flexibility deteriorate
Solution Approach 1:
The invention uses a composite material system consisting of PMMA matrix combined with crosslinked acrylic beads containing specific comonomers (acrylonitrile, vinyl aromatic compounds). This composite structure allows the material to simultaneously achieve UV resistance from the crosslinked beads and improved impact resistance from the flexible comonomer components, resolving the contradiction between UV protection and impact strength
Solution Approach 2:
The invention changes the chemical composition parameters of the crosslinked acrylic beads by incorporating specific comonomers (acrylonitrile at 1-20 mol% and vinyl aromatic compounds at 1-30 mol%). This parameter modification allows the beads to maintain crosslinked structure for UV resistance while introducing flexible segments that improve impact resistance, thus resolving the contradiction
2Illumination intensity
If crosslinked acrylic beads are used to create frosted appearance, then light diffusion is improved, but material rigidity increases and flexibility decreases
Solution Approach 1:
The invention creates a composite material where crosslinked acrylic beads (providing light diffusion) are combined with PMMA matrix containing flexible comonomer segments. The composite structure allows simultaneous achievement of frosted appearance and flexibility, resolving the contradiction between light diffusion and material adaptability
Solution Approach 2:
The invention applies local quality by having different regions perform different functions: the crosslinked acrylic beads provide light diffusion in specific localized areas, while the PMMA matrix with flexible comonomers provides overall flexibility. This spatial differentiation resolves the contradiction between local light diffusion property and global flexibility
3Ease of manufacture
If conventional acrylic materials are used for frosted appearance, then manufacturing simplicity is maintained, but application scope is limited due to rigidity and fragility
Solution Approach 1:
The invention modifies the chemical composition parameters of the acrylic system by introducing specific comonomers (acrylonitrile and vinyl aromatic compounds) in controlled amounts. This parameter change maintains the simplicity of existing manufacturing processes while dramatically expanding application scope by enabling both flexible and rigid frosted materials, as well as impact-resistant variants
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 material exhibits a unique combination of flexibility, impact resistance, UV resistance, and a soft touch surface, enabling new applications in design and coatings while maintaining a low gloss appearance, with enhanced processing ease and fluidity.
Implementation Method 1
achieved through controlled radical polymerization and suspension polymerization processes
Implementation Method 2
achieved through controlled radical polymerization and suspension polymerization processes
Implementation Method 3
The materials obtained diffuse light while allowing it to pass (for example shower cubicles with a "frosted" appearance). They are also very resistant to UV radiation.
Data Source
AI summary
The subject of the present invention is a semi-rigid or flexible and high-gloss impact-reinforced acrylic material. The acrylic material according to the invention comprises a nanostructured matrix constituted of at least one thermoplastic acrylic block copolymer and at least one highly crosslinked acrylic copolymer. The matrix comprises at least one thermoplastic acrylic block copolymer. The highly crosslinked acrylic copolymer comprises, as sole monomer or as predominant monomer, MMA, that is to say that it comprises, by weight, more than 50%, advantageously more than 65%, of MMA. The acrylic material according to the invention comprises from 60% to 99% by weight of matrix for 40% to 1% by weight of crosslinked copolymer. These materials may be converted by injection moulding, extrusion, co-extrusion, extrusion-blow moulding for producing parts, profiles, sheets or films for example.