Aqueous Baking Slurry Composition for Flexible Ceramic Green Sheets
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Solution Overview
Problem
Existing aqueous ceramic green sheet compositions struggle to balance flexibility and strength, leading to issues with adhesiveness and moisture resistance, particularly when transitioning from organic to aqueous solvents due to environmental and health concerns.
Innovation Solution
A baking slurry composition containing an amino alcohol compound, inorganic powder, and a polyvinyl alcohol resin, which provides enhanced flexibility and strength by improving dispersion and adhesiveness, while maintaining water resistance through the use of specific molecular structures and ratios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an aqueous solvent is used instead of an organic solvent in the baking slurry composition, then environmental and health safety is improved, but the flexibility and strength of the resulting ceramic sheet deteriorate
Solution Approach 1:
The patent changes the chemical parameters of the aqueous solvent by selecting specific types (alcohols, glycols, carboxylic acids and their esters) and controlling their molecular weight ranges. This parameter optimization allows the aqueous solvent to provide both environmental safety and adequate sheet strength/flexibility properties that were previously only achievable with organic solvents.
Solution Approach 2:
The patent uses composite binder systems combining multiple polymers (styrene-butadiene rubber, polyvinyl butyral, nitrocellulose) in specific ratios within the aqueous medium. This composite approach creates synergistic effects that maintain the mechanical properties (strength and flexibility) typically provided by organic solvents, while retaining the environmental benefits of aqueous-based formulations.
2Object-affected harmful factors
If an aqueous solvent is used instead of an organic solvent in the baking slurry composition, then environmental and health safety is improved, but the flexibility of the resulting ceramic sheet deteriorates
Solution Approach 1:
The patent optimizes physical parameters of the aqueous solvent including viscosity (controlled by molecular weight selection) and evaporation rate. By selecting solvents with appropriate molecular weights and combining them in specific ratios, the formulation achieves flexibility comparable to organic-based systems while maintaining low VOC emissions.
Solution Approach 2:
The aqueous solvent acts as an intermediary medium that enables proper dispersion of ceramic powders and binders during sheet formation, then evaporates cleanly without the harmful effects of organic solvents. The specific selection of aqueous solvents with controlled evaporation rates ensures proper processing while maintaining sheet flexibility.
3Ease of manufacture
If conventional aqueous ceramic green sheet compositions are used, then coating properties are improved, but the balance between flexibility and strength deteriorates
Solution Approach 1:
The patent employs a composite binder system combining styrene-butadiene rubber (providing flexibility), polyvinyl butyral (providing strength), and nitrocellulose (providing coating performance) in optimized ratios. This composite approach allows the formulation to simultaneously achieve excellent coating properties and balanced mechanical strength, overcoming the limitations of conventional single-component aqueous systems.
Solution Approach 2:
The patent systematically adjusts composition parameters including binder ratios, solvent types and proportions, and ceramic powder characteristics to optimize both coating applicability and final sheet strength. This parameter optimization enables the aqueous formulation to match or exceed the performance of organic-based systems while maintaining environmental advantages.
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 achieves increased flexibility and strength in ceramic sheets, improving adhesiveness and reducing moisture absorption, thereby enhancing the stability and performance of ceramic capacitors and other sintered products.
Implementation Method 1
a baking slurry composition for producing a sintered product of inorganic powder, wherein, in the case of forming the baking slurry composition into a sheet, the sheet has increased flexibility
Implementation Method 2
a baking slurry composition for producing a sintered product of inorganic powder, wherein, in the case of forming the baking slurry composition into a sheet, the sheet has increased strength
Implementation Method 3
a baking slurry composition containing an amino alcohol compound (A), inorganic powder (B), a polyvinyl alcohol resin (C), and water
Implementation Method 4
improving dispersion and adhesiveness
Data Source
AI summary
A baking slurry composition of the present invention contains an amino alcohol compound represented by formula, inorganic powder , a polyvinyl alcohol resin, and water. In the formula,R is a hydrogen atom or an alkyl group having a carbon number larger than or equal to 1 and smaller than or equal to 20, and m and n being values satisfying conditions m≥0, n≥0, and m+n≥1.