Polyamide Resin Composition for Gas Barrier and Low-Temperature Impact
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Solution Overview
Problem
Existing polyamide resin compositions fail to simultaneously achieve excellent gas barrier property and impact resistance, particularly at low temperatures, making them unsuitable for use as inner liners in gas storage containers.
Innovation Solution
A polyamide resin composition comprising specific ratios of polyamide resin, thermoplastic polyester elastomer (TPEE), impact modifier, and nucleating agent, which includes a range of 0.5 to 20 parts by weight of TPEE, 11 to 34 parts by weight of impact modifier, and 0 to 3 parts by weight of nucleating agent, enhancing both gas barrier and impact resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a polyamide resin composition is designed to have excellent impact resistance at low temperature, then the impact resistance is improved, but the gas barrier property deteriorates
Solution Approach 1:
The patent applies parameter changes by precisely controlling the amounts of TPEE (0.5-20 parts by weight) and impact modifier (11-34 parts by weight) within specific ranges. By optimizing these compositional parameters, the invention achieves a balance where both impact resistance and gas barrier property are improved simultaneously, resolving the contradiction between these two properties.
Solution Approach 2:
The patent uses composite materials by combining polyamide resin with specific amounts of TPEE and impact modifier. This multi-component composite system allows the synergistic effects of different materials to complement each other, where TPEE provides flexibility and impact resistance while the impact modifier enhances toughness, all while maintaining acceptable gas barrier properties through controlled composition ratios.
2Reliability
If a polyamide resin composition is designed to have excellent gas barrier property, then the gas barrier property is improved, but the impact resistance at low temperature deteriorates
Solution Approach 1:
The patent applies parameter changes by precisely controlling the amounts of TPEE (0.5-20 parts by weight) and impact modifier (11-34 parts by weight) within specific ranges. By optimizing these compositional parameters, the invention achieves a balance where both impact resistance and gas barrier property are improved simultaneously, resolving the contradiction between these two properties.
Solution Approach 2:
The patent uses composite materials by combining polyamide resin with specific amounts of TPEE and impact modifier. This multi-component composite system allows the synergistic effects of different materials to complement each other, where TPEE provides flexibility and impact resistance while the impact modifier enhances toughness, all while maintaining acceptable gas barrier properties through controlled composition ratios.
3Strength
If the amount of TPEE is increased to improve impact resistance, then the impact resistance is improved, but the gas barrier property deteriorates
Solution Approach 1:
The patent applies parameter changes by precisely controlling the amount of TPEE within a specific range of 0.5-20 parts by weight. This optimized parameter range ensures that sufficient TPEE is present to provide impact resistance while preventing excessive TPEE content that would compromise gas barrier properties. The balanced composition resolves the contradiction between these two properties.
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 composition exhibits excellent gas barrier property and high impact resistance at low temperatures, along with good mechanical properties like tensile strength and heat resistance, suitable for gas storage containers.
Implementation Method 1
a nucleating agent with specific amount ratios... exhibits excellent gas barrier property
Data Source
AI summary
The present invention relates to a polyamide resin composition and, more specifically, to: a polyamide resin composition which, by comprising a polyamide resin, a thermoplastic polyester elastomer (TPEE), an impact modifier, and a nucleating agent in a specific weight ratio, can exhibit excellent gas barrier properties and excellent impact resistance (particularly, high low-temperature impact resistance) simultaneously, and furthermore, can be very suitable for use as an inner liner of a gas storage container due to excellent heat resistance and mechanical properties such as tensile strength; and a molded product comprising same (particularly, an inner liner of a gas storage container).