Molded Plastic Body Crosslinking for Kitchen Surfaces
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Solution Overview
Problem
Molded plastic bodies used in kitchens and bathrooms lack sufficient mechanical and thermal resistance, ease of cleaning, and visual quality due to limitations in crosslinking agent proportions and filler particle size, leading to issues like tearing, irregular surface distribution, and reduced scratch resistance.
Innovation Solution
A molded plastic body production process involving a reaction mixture with 50-90% inorganic filler, 10-50% binder solution, and a crosslinking agent proportion exceeding 10% by weight relative to the monomer, using bifunctional or multifunctional monomers like trimethylolpropane trimethacrylate, and a combination of fine and coarse fillers to achieve improved mechanical and visual properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the proportion of crosslinking agent is increased to improve hardness and solvent resistance, then the molded body becomes more resistant to mechanical and thermal loads, but the molded body tears during shaping polymerization
Solution Approach 1:
The patent changes the chemical parameters of the crosslinking agent, specifically using a multifunctional crosslinking agent with 3-6 functional groups per molecule instead of conventional bifunctional agents. This parameter change enables achieving the desired crosslinking density for hardness and thermal resistance while controlling the polymerization process to prevent tearing during shaping.
Solution Approach 2:
The patent creates a composite system combining multifunctional crosslinking agents with specific monomer ratios (1-10% crosslinking agent relative to monomer) and filler loadings (70-90% inorganic filler). This composite approach achieves both high hardness and tearing resistance by balancing the crosslinking network formation with sufficient polymer matrix continuity.
2Reliability
If the proportion of crosslinking agent is increased to improve solvent resistance, then the molded body gains higher resistance to chemical attacks, but white regions appear on the surface with irregular distribution
Solution Approach 1:
The patent optimizes the crosslinking agent proportion parameter to a specific range (1-10% by weight relative to monomer) and uses multifunctional crosslinking agents with controlled functionality (3-6 groups). This parameter optimization achieves sufficient solvent resistance while maintaining uniform white region distribution, as the controlled crosslinking prevents excessive local concentration of crosslinking sites that would cause irregular surface patterns.
3Strength
If the proportion of crosslinking agent is increased to improve wear resistance, then the molded body becomes more resistant to abrasion, but the surface becomes less smooth and cleanability decreases
Solution Approach 1:
The patent develops a composite formulation combining multifunctional crosslinking agents with high inorganic filler content (70-90% by weight). The specific composite structure creates a surface that is both abrasion-resistant due to the filler-crosslinked network and relatively smooth for cleaning, as the controlled crosslinking prevents excessive surface roughening that would occur with conventional crosslinking agents at high wear resistance levels.
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 process results in molded bodies with enhanced wear resistance, scratch resistance, ease of cleaning, and a smooth, visually appealing surface with improved resistance to thermal and mechanical stresses, preventing tearing and maintaining a uniform surface finish.
Implementation Method 1
a so-called crosslinking agent is added which causes three-dimensional crosslinking of the polymer chains among one another
Implementation Method 2
the binder solution having a monomer and a polymer dissolved therein
Data Source
AI summary
A molded plastic body is produced from a cured reaction mixture. The reaction mixture is pourable in a non-cured state and includes 50 to 90% by weight, based on the reaction mixture, of an inorganic particulate filler, a crosslinking agent, and 10 to 50% by weight, based on the reaction mixture, of a binder solution. The binder solution includes a monomer and a polymer dissolved in it. The molded plastic body is characterized in that the percentage of the crosslinking agent admixed with the binder solution is more than 10% by weight based on the percentage of the monomer in the binder solution. The invention also relates to a method for producing the molded plastic body.