Artificial Marble Composition for Quartzite-Like Light Transmittance
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Solution Overview
Problem
Existing engineered stone technologies struggle to replicate the visual depth and light transmittance of natural quartzites, making it difficult to produce artificial marbles that resemble quartzites with high transparency and aesthetic appeal.
Innovation Solution
An artificial marble composition comprising a binder resin, inorganic particles, and quartz powder, with specific SiO2 and alumina content, achieves a total transmittance of 6 to 20% and luminance of 400 to 2000 cd/m², using amorphous silica, glass, or crystalline quartz particles, and a weight ratio of inorganic particles to quartz powder of 500 to 700:200 to 400 parts by weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If colored pigments and opaque inorganic quartz particles are used in existing E-stone production process, then the artificial marble can be produced with various patterns and appearances, but the light transmittance and visual depth similar to natural quartzites cannot be achieved
Solution Approach 1:
The patent changes the optical parameters of the inorganic particles by selecting specific materials (amorphous silica, glass particles containing barium, crystalline quartz, fused silica) with high light transmittance properties, and adjusts the composition parameters (quartz powder with 99.5-100% SiO2 and ≤0.5% alumina content, specific weight ratios of inorganic particles to quartz powder) to achieve high light transmittance (6-20%) and visual depth similar to natural quartzites
Solution Approach 2:
The patent uses a composite material system consisting of binder resin, high-light-transmittance inorganic particles (amorphous silica, glass particles, crystalline quartz, or fused silica), and pure quartz powder in specific proportions (500-700 parts inorganic particles to 200-400 parts quartz powder per 100 parts binder resin) to create an artificial marble that replicates the optical properties of natural quartzite while maintaining manufacturability
2Illumination intensity
If high purity quartz powder with specific SiO2 content and low alumina content is used, then light transmittance is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies precise material parameters: quartz powder with SiO2 content of 99.5-100% by weight and alumina content of 0.5% by weight or less, and defines specific weight ratio ranges (500-700:200-400) of inorganic particles to quartz powder to optimize light transmittance while providing clear manufacturing guidelines that balance precision requirements with practical producibility
Data Source
AI summary
The present invention relates to an artificial marble having a total transmittance of 6 or greater and 20 or less when the total transmittance is measured using a turbidimeter (NDH 5000 available from Nippon Denshoku) for an artificial marble sample with a size of 7 cm in width, 7 cm in length, and 1.5 cm in thickness.