Heat Storage Molded Body Non-Phthalate Plasticizer HSP Distance
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Solution Overview
Problem
Existing heat storage materials for residential and automotive applications face challenges with flexibility, heat resistance, and phthalate content, leading to limited use and potential environmental concerns, as well as issues with volumetric shrinkage and bleed-out at high temperatures.
Innovation Solution
A heat storage molded body is developed using a non-phthalate plasticizer with a thermoplastic resin matrix, where the HSP distance between the plasticizer and heat storage medium is 6 or more, ensuring excellent flexibility, heat resistance, and reduced bleed-out, allowing for various applications without the need for additional protective layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a phthalate material is used in the heat storage molded body, then flexibility is improved, but environmental safety and health safety deteriorate due to endocrine disruption and adverse effects on wildlife and humans
Solution Approach 1:
The patent removes the harmful phthalate material from the heat storage molded body while maintaining the necessary flexibility through alternative plasticizer selection. This extraction of the harmful substance directly addresses the contradiction by eliminating the environmental and health risks associated with phthalates.
Solution Approach 2:
The patent converts the challenge of replacing phthalates into a benefit by selecting plasticizers with specific HSP distances that not only eliminate harmful effects but also improve heat resistance and suppress bleed-out. The replacement process transforms a harmful material issue into an opportunity for enhanced overall performance.
2Object-affected harmful factors
If a non-phthalate plasticizer is used to improve environmental safety, then heat resistance deteriorates due to volumetric shrinkage at high temperatures
Solution Approach 1:
The patent changes the critical parameter of HSP distance between the plasticizer and heat storage medium to a value of 6 or more. This parameter change fundamentally alters the interaction between materials, preventing volumetric shrinkage at high temperatures while maintaining the benefits of using non-phthalate plasticizers.
Solution Approach 2:
The patent creates a composite resin matrix system where the thermoplastic resin and non-phthalate plasticizer work together with specific HSP characteristics. This composite approach allows the material to achieve both environmental safety and heat resistance through synergistic material composition.
3Ease of manufacture
If the HSP distance between plasticizer and heat storage medium is small, then processability is improved, but bleed-out of plasticizer or heat storage medium occurs at high temperatures
Solution Approach 1:
The patent modifies the HSP distance parameter to 6 or more, which fundamentally changes the compatibility characteristics between plasticizer and heat storage medium. This parameter adjustment prevents bleed-out while maintaining adequate processability during manufacturing.
4Temperature
If a rigid material such as gypsum board is used, then heat resistance is improved, but flexibility and handleability deteriorate
Solution Approach 1:
The patent employs a composite resin matrix system combining thermoplastic resin and non-phthalate plasticizer with specific HSP characteristics. This composite material achieves a balance between flexibility for easy handling and heat resistance, overcoming the limitations of rigid materials like gypsum board.
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 solution provides a flexible and heat-resistant heat storage material that effectively retains temperature and suppresses plasticizer or heat storage medium bleed-out, enhancing energy-saving capabilities in diverse applications while being safe for human health.
Implementation Method 1
heat storage medium dispersed in a resin matrix
Implementation Method 2
heat storage properties capable of contributing to proper-temperature retention
Implementation Method 3
the HSP distance between the plasticizer and the heat storage medium is 6 or more. As a result, components which may be desorbed from the heat storage molded body at high temperatures can be suppressed from being desorbed, and therefore, both excellent heat storage properties and favorable heat resistance can be achieved
Data Source
AI summary
A heat storage molded body includes a heat storage medium dispersed in a resin matrix, wherein the resin matrix includes a resin composition containing a thermoplastic resin and a non-phthalate plasticizer, and wherein the Hansen Solubility Parameter (HSP) distance between the non-phthalate plasticizer and the heat storage medium is 6 or more.