Elastomeric Prepolymer Composition for Strength-Elongation Balance
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Solution Overview
Problem
Existing polymer materials face challenges in achieving both high tensile strength and high tensile elongation, with filler addition often compromising elongation.
Innovation Solution
A coreactive composition comprising a first elastomeric prepolymer with a molecular weight of 1,000 Da to 20,000 Da, a second elastomeric prepolymer with a molecular weight of 1,000 Da to 20,000 Da, and a third elastomeric prepolymer with a molecular weight of 50,000 Da to 500,000 Da, which react to enhance tensile strength without compromising elongation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If filler is added to increase tensile strength, then tensile strength is improved, but tensile elongation deteriorates
Solution Approach 1:
The invention uses a composite elastomeric system combining three different prepolymers with specific molecular weights (1,000-20,000 Da, 1,000-20,000 Da, and 50,000-500,000 Da) to achieve both high tensile strength and high tensile elongation without relying on traditional filler additives that would compromise elongation properties
Solution Approach 2:
The invention changes the molecular weight parameters of the elastomeric prepolymers used, specifically employing a combination of low molecular weight (1,000-20,000 Da) and high molecular weight (50,000-500,000 Da) prepolymers in specific ratios to simultaneously achieve high tensile strength and high tensile elongation
Data Source
AI summary
Compositions comprising a combination of low molecular weight prepolymers and high molecular weight prepolymers are disclosed. The compositions are used to fabricate elastomeric articles having high tensile strength and high tensile elongation.