Polyester Polyolefin Toy Block Composition
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Solution Overview
Problem
Current materials used for toy blocks, such as polycarbonate (PC) and acrylonitrile butadiene styrene (ABS), pose environmental and health concerns due to their composition and are desired to be replaced with alternatives that maintain mechanical properties like low shrinkage, high impact strength, and high tensile modulus, while also minimizing variations in processing conditions.
Innovation Solution
A composition comprising a polyester derived from an aromatic dicarboxylic acid, an acyclic aliphatic diol, and a cycloaliphatic diol or spiroglycol, combined with a polyolefin and a compatibilizer, which provides a balance of mechanical properties and processability, allowing for the use of existing molds and reducing property variations across different processing conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If PC or ABS is used for toy blocks, then mechanical properties such as impact strength and tensile modulus are improved, but environmental and health risks increase due to BPA and other components
Solution Approach 1:
The patent changes the chemical composition parameters by using a polyester derived from cycloaliphatic diol or spiroglycol instead of traditional PC or ABS components. This substitution maintains mechanical properties while eliminating harmful substances like BPA, thus resolving the contradiction between strength and health safety
Solution Approach 2:
The patent creates a composite material system consisting of polyester, polyolefin, and compatibilizer. This composite approach allows the material to achieve both the mechanical strength of PC/ABS and the environmental safety of alternative materials by combining complementary properties of different polymer components
2Strength
If PC or ABS is used for toy blocks, then tensile modulus is improved, but environmental concerns increase
Solution Approach 1:
The patent modifies the material composition by using a polyester with specific chemical structure (derived from cycloaliphatic diol or spiroglycol) that provides high tensile modulus while being environmentally benign, replacing the harmful PC or ABS materials
Solution Approach 2:
The patent promotes the use of biodegradable or environmentally friendly polyester-based materials that can replace traditional petroleum-based PC/ABS, aligning with sustainability goals while maintaining mechanical performance
3Object-affected harmful factors
If alternative materials are used to replace PC or ABS, then environmental profile is improved, but mechanical properties such as impact strength and tensile modulus decrease
Solution Approach 1:
The patent develops a composite material system combining polyester, polyolefin, and compatibilizer that achieves both environmental sustainability and high impact strength, overcoming the limitation of single-component alternative materials
Solution Approach 2:
The patent optimizes the chemical structure parameters of the polyester component (using cycloaliphatic diol or spiroglycol) to enhance impact strength while maintaining environmental benefits, thus resolving the trade-off between eco-friendliness and mechanical performance
4Illumination intensity
If conventional materials are used, then high glossiness is achieved, but shrinkage variations under different processing conditions increase
Solution Approach 1:
The patent modifies the polymer composition parameters by incorporating a polyester with specific chemical structure that provides both high glossiness and dimensional stability, reducing shrinkage variations under different processing conditions compared to conventional materials
Data Source
AI summary
The invention relates to a composition comprising A) a polyester, B) a polyolefin and C) a compatibilizer, wherein A) comprises a first polyester derived from an aromatic dicarboxylic acid, an acyclic aliphatic diol and at least one of a cycloaliphatic diol and spiroglycol and a second polyester different from the first polyester. The invention further relates to an article comprising the composition, particularly a toy block.