Artificial leather and method for producing same
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Solution Overview
Problem
Conventional synthetic leathers have poor hygroscopicity and a high environmental impact due to their petroleum-based materials, and they lack flexibility.
Innovation Solution
A synthetic leather is developed that includes a base material layer with a fiber base material containing a polypeptide derivative. This derivative consists of a block copolymer with a first segment containing a polypeptide skeleton and one or more second segments with a molecular group that acts as a plasticizer, improving flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a polypeptide skeleton is used in synthetic leather, then hygroscopicity and environmental compatibility are improved, but flexibility deteriorates
Solution Approach 1:
The patent uses a block copolymer composite material where a first segment contains a polypeptide skeleton (for hygroscopicity and environmental compatibility) and a second segment contains a plasticizing molecular group (for flexibility). This composite structure allows both contradictory properties to coexist in the same material system.
Solution Approach 2:
The patent applies local quality by creating distinct segments within the polymer chain: the first segment (polypeptide skeleton) provides hygroscopicity and environmental compatibility in specific regions, while the second segment (plasticizing group) provides flexibility in other regions. This local differentiation resolves the contradiction by allowing different properties to manifest in different parts of the material.
2Ease of operation
If conventional synthetic resin materials are used, then flexibility is maintained, but environmental load increases and hygroscopicity decreases
Solution Approach 1:
The patent changes the chemical composition parameters of the synthetic leather by incorporating a polypeptide skeleton instead of conventional petroleum-based resins. This parameter change improves environmental compatibility and hygroscopicity while the integrated plasticizing segment maintains flexibility, thus resolving the contradiction between environmental performance and mechanical properties.
3Object-affected harmful factors
If a polypeptide skeleton is used to reduce environmental impact, then environmental load is reduced, but flexibility deteriorates
Solution Approach 1:
The patent creates a composite polymer structure where the polypeptide skeleton segment provides environmental compatibility while the integrated plasticizing segment maintains flexibility. This composite approach allows the material to meet both environmental requirements and mechanical performance requirements simultaneously.
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 synthetic leather achieves excellent flexibility while maintaining the mechanical strength associated with polypeptide skeletons, reducing the environmental impact and improving hygroscopicity.
Implementation Method 1
the second segment contains a molecular group having a plasticizing function for the polypeptide skeleton
Data Source
AI summary
The present disclosure relates to a synthetic leather including a base material layer containing a fiber base material, in which at least a part of the synthetic leather contains a polypeptide derivative, the polypeptide derivative contains a block copolymer containing a first segment containing a polypeptide skeleton, and one or a plurality of second segments that are bonded to the first segment, the polypeptide skeleton is a recombinant polypeptide skeleton or a hydrophobic polypeptide skeleton, and the second segment contains a molecular group having a plasticizing function for the polypeptide skeleton.